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lhodges1 2023-08-28 00:34:21 +10:00
parent 40dfee0daa
commit aa80d56626
2 changed files with 80 additions and 31 deletions
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6
driver/modules.c
View file

@ -7,9 +7,9 @@
#define WHITELISTED_MODULE_COUNT 3
#define MODULE_MAX_STRING_SIZE 256
#define NTOSKRNL 1
#define CLASSPNP 2
#define WDF01000 3
#define NTOSKRNL 0
#define CLASSPNP 1
#define WDF01000 2
CHAR WHITELISTED_MODULES[ WHITELISTED_MODULE_COUNT ][ MODULE_MAX_STRING_SIZE ] =
{

105
driver/pool.c
View file

@ -4,6 +4,17 @@
#include <intrin.h>
#define POOL_TAG_LENGTH 4
CHAR PROCESS_POOL_TAG[ POOL_TAG_LENGTH ] = "\x50\x72\x6f\x63";
CHAR THREAD_POOL_TAG[ POOL_TAG_LENGTH ] = "\x54\x68\x72\x64";
CHAR DESKTOP_POOL_TAG[ POOL_TAG_LENGTH ] = "\x44\x65\x73\x6B";
CHAR WINDOW_STATIONS_POOL_TAG[ POOL_TAG_LENGTH ] = "\x57\x69\x6E\x64";
CHAR MUTANTS_POOL_TAG[ POOL_TAG_LENGTH ] = "\x4D\x75\x74\x65";
CHAR FILE_OBJECTS_POOL_TAG[ POOL_TAG_LENGTH ] = "\x46\x69\x6C\x65";
CHAR DRIVERS_POOL_TAG[ POOL_TAG_LENGTH ] = "\x44\x72\x69\x76";
CHAR SYMBOLIC_LINKS_POOL_TAG[ POOL_TAG_LENGTH ] = "\x4C\x69\x6E\x6B";
PKDDEBUGGER_DATA64 GetGlobalDebuggerData()
{
CONTEXT context = { 0 };
@ -46,39 +57,73 @@ end:
return debugger_data;
}
VOID ScanPageForProcessAllocations(
VOID ScanPageForKernelObjectAllocation(
_In_ UINT64 PageBase,
_In_ ULONG PageSize
_In_ ULONG PageSize,
_In_ LPCSTR ObjectTag
)
{
CHAR process[] = "\x50\x72\x6f\x63";
INT length = strlen( process );
INT length = 0;
CHAR current_char;
CHAR current_sig_byte;
PPOOL_HEADER pool_header;
PEPROCESS process;
LPCSTR process_name;
if ( !PageBase || !PageSize )
if ( !PageBase || !PageSize || !ObjectTag)
return;
PAGED_CODE();
for ( INT offset = 0; offset <= PageSize - length; offset++ )
for ( INT offset = 0; offset <= PageSize - POOL_TAG_LENGTH; offset++ )
{
for ( INT sig_index = 0; sig_index < length + 1; sig_index++ )
for ( INT sig_index = 0; sig_index < POOL_TAG_LENGTH + 1; sig_index++ )
{
if ( !MmIsAddressValid( PageBase + offset + sig_index ) )
break;
CHAR current_char = *( PCHAR )( PageBase + offset + sig_index );
CHAR current_sig_byte = process[ sig_index ];
current_char = *( PCHAR )( PageBase + offset + sig_index );
current_sig_byte = ObjectTag[ sig_index ];
if ( sig_index == length )
if ( sig_index == POOL_TAG_LENGTH )
{
PPOOL_HEADER pool_header = ( UINT64 )PageBase + offset - 0x04;
pool_header = ( UINT64 )PageBase + offset - 0x04;
if ( !MmIsAddressValid( (PVOID)pool_header ) )
break;
/*
* This is some hard coded trash, need to figure out how we can differentiate different
* types of objects since they would each have a varying number of headers, object sizes etc.
*/
if ( pool_header->BlockSize * CHUNK_SIZE - sizeof(POOL_HEADER) == WIN_PROCESS_ALLOCATION_SIZE )
{
DEBUG_LOG( "prolly found proc: %llx", (UINT64)pool_header + sizeof(POOL_HEADER) );
/*
* For an EPROCESS structure:
*
* Pool base + 0x00 = ?? (not sure what structure lies here)
* Pool base + 0x10 = OBJECT_HEADER_QUOTA_INFO
* Pool base + 0x30 = OBJECT_HEADER_HANDLE_INFO
* Pool base + 0x40 = OBJECT_HEADER
* Pool base + 0x70 = EPROCESS
*
* OBJECT_HEADER->InfoMask is a bit mask that tells us which optional
* headers the object has. The bits are as follows:
*
* 0x1 = OBJECT_HEADER_CREATOR_INFO
* 0x2 = OBJECT_HEADER_NAME_INFO
* 0x4 = OBJECT_HEADER_HANDLE_INFO
* 0x8 = OBJECT_HEADER_QUOTA_INFO
* 0x10 = OBJECT_HEADER_PROCESS_INFO
* 0x20 = OBJECT_HEADER_AUDIT_INFO
* 0x40 = OBJECT_HEADER_HANDLE_REVOCATION_INFO
*/
process = (PEPROCESS)( ( UINT64 )pool_header + sizeof( POOL_HEADER ) + 0x70 );
process_name = PsGetProcessImageFileName( process );
DEBUG_LOG( "Found process: %s", process_name );
}
break;
@ -102,11 +147,16 @@ BOOLEAN IsPhysicalAddressInPhysicalMemoryRange(
)
{
ULONG page_index = 0;
UINT64 start_address = 0;
UINT64 end_address = 0;
if ( !PhysicalAddress || !PhysicalMemoryRanges )
return FALSE;
while ( PhysicalMemoryRanges[ page_index ].NumberOfBytes.QuadPart != NULL )
{
UINT64 start_address = PhysicalMemoryRanges[ page_index ].BaseAddress.QuadPart;
UINT64 end_address = start_address + PhysicalMemoryRanges[ page_index ].NumberOfBytes.QuadPart;
start_address = PhysicalMemoryRanges[ page_index ].BaseAddress.QuadPart;
end_address = start_address + PhysicalMemoryRanges[ page_index ].NumberOfBytes.QuadPart;
if ( PhysicalAddress >= start_address && PhysicalAddress <= end_address )
return TRUE;
@ -146,13 +196,13 @@ VOID WalkKernelPageTables()
CR3 cr3;
PML4E pml4_base;
PML4E pml4_entry;
PDPTE pdpt_base;
UINT64 pdpt_base;
UINT64 pd_base;
UINT64 pt_base;
PDPTE pdpt_entry;
PDPTE_LARGE pdpt_large_entry;
PDE pd_base;
PDE pd_entry;
PDE_LARGE pd_large_entry;
PTE pt_base;
PTE pt_entry;
UINT64 base_physical_page;
UINT64 base_virtual_page;
@ -192,14 +242,14 @@ VOID WalkKernelPageTables()
physical.QuadPart = pml4_entry.Bits.PhysicalAddress << PAGE_4KB_SHIFT;
pdpt_base.BitAddress = MmGetVirtualForPhysical( physical );
pdpt_base = MmGetVirtualForPhysical( physical );
if ( !pdpt_base.BitAddress || !MmIsAddressValid( pdpt_base.BitAddress ) )
if ( !pdpt_base || !MmIsAddressValid( pdpt_base ) )
continue;
for ( INT pdpt_index = 0; pdpt_index < PDPT_ENTRY_COUNT; pdpt_index++ )
{
pdpt_entry.BitAddress = *( UINT64* )( pdpt_base.BitAddress + pdpt_index * sizeof( UINT64 ) );
pdpt_entry.BitAddress = *( UINT64* )( pdpt_base + pdpt_index * sizeof( UINT64 ) );
if ( pdpt_entry.Bits.Present == NULL )
continue;
@ -213,14 +263,14 @@ VOID WalkKernelPageTables()
physical.QuadPart = pdpt_entry.Bits.PhysicalAddress << PAGE_4KB_SHIFT;
pd_base.BitAddress = MmGetVirtualForPhysical( physical );
pd_base = MmGetVirtualForPhysical( physical );
if ( !pd_base.BitAddress || !MmIsAddressValid( pd_base.BitAddress ) )
if ( !pd_base || !MmIsAddressValid( pd_base ) )
continue;
for ( INT pd_index = 0; pd_index < PD_ENTRY_COUNT; pd_index++ )
{
pd_entry.BitAddress = *( UINT64* )( pd_base.BitAddress + pd_index * sizeof( UINT64 ) );
pd_entry.BitAddress = *( UINT64* )( pd_base + pd_index * sizeof( UINT64 ) );
if ( pd_entry.Bits.Present == NULL )
continue;
@ -234,14 +284,14 @@ VOID WalkKernelPageTables()
physical.QuadPart = pd_entry.Bits.PhysicalAddress << PAGE_4KB_SHIFT;
pt_base.BitAddress = MmGetVirtualForPhysical( physical );
pt_base = MmGetVirtualForPhysical( physical );
if ( !pt_base.BitAddress || !MmIsAddressValid( pt_base.BitAddress ) )
if ( !pt_base || !MmIsAddressValid( pt_base ) )
continue;
for ( INT pt_index = 0; pt_index < PT_ENTRY_COUNT; pt_index++ )
{
pt_entry.BitAddress = *( UINT64* )( pt_base.BitAddress + pt_index * sizeof( UINT64 ) );
pt_entry.BitAddress = *( UINT64* )( pt_base + pt_index * sizeof( UINT64 ) );
if ( pt_entry.Bits.Present == NULL )
continue;
@ -258,7 +308,7 @@ VOID WalkKernelPageTables()
if ( base_virtual_page == NULL || !MmIsAddressValid( base_virtual_page ) )
continue;
ScanPageForProcessAllocations( base_virtual_page, PAGE_BASE_SIZE );
ScanPageForKernelObjectAllocation( base_virtual_page, PAGE_BASE_SIZE, (LPCSTR)PROCESS_POOL_TAG );
}
}
}
@ -269,7 +319,6 @@ VOID WalkKernelPageTables()
KeLowerIrql( irql );
DEBUG_LOG( "Finished scanning memory" );
}
VOID ScanNonPagedPoolForProcessTags()