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- ULONG
- GetShadowSsdtCurrentAddresses(
- PSSDT_ADDRESS AddressInfo,
- PULONG Length
- )
- {
- PSYSTEM_SERVICE_TABLE KeServiceDescriptorTableShadow = NULL;
- ULONG NumberOfService = 0;
- ULONG ServiceId = 0;
- PKAPC_STATE ApcState;
- ULONG i;
- if (AddressInfo == NULL || Length == NULL)
- {
- KdPrint(("[GetShadowSsdtCurrentAddresses] 输入参数无效"));
- return 0;
- }
- //KdPrint(("pid = %d", PsGetCurrentProcessId()));
- ServiceId = (ULONG)PsGetCurrentProcessId();
- if (!g_CsrssProcess) {
- PsLookupProcessByProcessId((PVOID)ScPsGetCsrssProcessId(), &g_CsrssProcess);
- }
- KeServiceDescriptorTableShadow = GetKeServiceDescriptorTableShadow();
- if (KeServiceDescriptorTableShadow == NULL)
- {
- KdPrint(("[GetShadowSsdtCurrentAddresses] GetKeServiceDescriptorTableShadow failed"));
- return 0;
- }
- NumberOfService = KeServiceDescriptorTableShadow->NumberOfService;
- if (Length[0] < NumberOfService * sizeof(SSDT_ADDRESS))
- {
- Length[0] = NumberOfService * sizeof(SSDT_ADDRESS);
- return 0;
- }
- ApcState = ExAllocatePoolWithTag(NonPagedPool, sizeof(KAPC_STATE), MEM_TAG);
- KeStackAttachProcess((PRKPROCESS)g_CsrssProcess, ApcState);
- for (ServiceId = 0; ServiceId < NumberOfService; ServiceId ++)
- {
- AddressInfo[ServiceId].FunAddress = (ULONG)
- KeServiceDescriptorTableShadow->ServiceTableBase[ServiceId];
- AddressInfo[ServiceId].nIndex = ServiceId;
- }
- KeUnstackDetachProcess(ApcState);
- ExFreePool(ApcState);
- Length[0] = NumberOfService * sizeof(SSDT_ADDRESS);
- return NumberOfService;
- }
- ///////////////////////////////////////////////////////////////////////////////////
- //
- // 功能实现:枚举当前Shadow SSDT 表函数地址
- // 输入参数:void
- // 输出参数:返回Shadow ssdt table
- //
- ///////////////////////////////////////////////////////////////////////////////////
- PSYSTEM_SERVICE_TABLE
- GetKeServiceDescriptorTableShadow(VOID)
- {
- PSYSTEM_SERVICE_TABLE ShadowTable = NULL;
- ULONG ServiceTableAddress = 0;
- PUCHAR cPtr = NULL;
- for (cPtr = (PUCHAR)KeAddSystemServiceTable;
- cPtr < (PUCHAR)KeAddSystemServiceTable + PAGE_SIZE;
- cPtr += 1 )
- {
- if (!MmIsAddressValid(cPtr)) continue;
- ServiceTableAddress = *(PULONG)cPtr;
- if (!MmIsAddressValid((PVOID)ServiceTableAddress)) continue;
- if (memcmp((PVOID)ServiceTableAddress, &KeServiceDescriptorTable, 16) == 0)
- {
- if ((PVOID)ServiceTableAddress == &KeServiceDescriptorTable) continue;
- ShadowTable = (PSYSTEM_SERVICE_TABLE)ServiceTableAddress;
- ShadowTable ++;
- return ShadowTable;
- }
- }
- return NULL;
- }
- //
- // 方法2,通过硬编码实现,不通用
- //
- PSYSTEM_SERVICE_TABLE
- GetKeServiceDescriptorTableShadow_2(VOID)
- /*++
- KeAddSystemServiceTable函数
- 805ba5a3 8d8840a65580 lea ecx,nt!KeServiceDescriptorTableShadow (8055a640)[eax]
- 805ba5a9 833900 cmp dword ptr [ecx],0
- --*/
- {
- PSYSTEM_SERVICE_TABLE ShadowTable;
- ULONG ServiceTableAddress;
- PUCHAR cPtr, pOpcode;
- ULONG Length = 0;
- for (cPtr = (PUCHAR)KeAddSystemServiceTable;
- cPtr < (PUCHAR)KeAddSystemServiceTable + PAGE_SIZE;
- cPtr += Length )
- {
- if (!MmIsAddressValid(cPtr)) return NULL;
- Length = SizeOfCode(cPtr, &pOpcode);
- if (!Length || (Length == 1 && *pOpcode == 0xC3)) return NULL;
- if (*(PUSHORT)pOpcode == 0x888D)
- {
- ServiceTableAddress = *(PULONG)(pOpcode + 2);
- ShadowTable = (PSYSTEM_SERVICE_TABLE)ServiceTableAddress;
- ShadowTable ++;
- return ShadowTable;
- }
- }
- return NULL;
- }
ULONG
GetShadowSsdtCurrentAddresses(
PSSDT_ADDRESS AddressInfo,
PULONG Length
)
{
PSYSTEM_SERVICE_TABLE KeServiceDescriptorTableShadow = NULL;
ULONG NumberOfService = 0;
ULONG ServiceId = 0;
PKAPC_STATE ApcState;
ULONG i;
if (AddressInfo == NULL || Length == NULL)
{
KdPrint(("[GetShadowSsdtCurrentAddresses] 输入参数无效"));
return 0;
}
//KdPrint(("pid = %d", PsGetCurrentProcessId()));
ServiceId = (ULONG)PsGetCurrentProcessId();
if (!g_CsrssProcess) {
PsLookupProcessByProcessId((PVOID)ScPsGetCsrssProcessId(), &g_CsrssProcess);
}
KeServiceDescriptorTableShadow = GetKeServiceDescriptorTableShadow();
if (KeServiceDescriptorTableShadow == NULL)
{
KdPrint(("[GetShadowSsdtCurrentAddresses] GetKeServiceDescriptorTableShadow failed"));
return 0;
}
NumberOfService = KeServiceDescriptorTableShadow->NumberOfService;
if (Length[0] < NumberOfService * sizeof(SSDT_ADDRESS))
{
Length[0] = NumberOfService * sizeof(SSDT_ADDRESS);
return 0;
}
ApcState = ExAllocatePoolWithTag(NonPagedPool, sizeof(KAPC_STATE), MEM_TAG);
KeStackAttachProcess((PRKPROCESS)g_CsrssProcess, ApcState);
for (ServiceId = 0; ServiceId < NumberOfService; ServiceId ++)
{
AddressInfo[ServiceId].FunAddress = (ULONG)
KeServiceDescriptorTableShadow->ServiceTableBase[ServiceId];
AddressInfo[ServiceId].nIndex = ServiceId;
}
KeUnstackDetachProcess(ApcState);
ExFreePool(ApcState);
Length[0] = NumberOfService * sizeof(SSDT_ADDRESS);
return NumberOfService;
}
///////////////////////////////////////////////////////////////////////////////////
//
// 功能实现:枚举当前Shadow SSDT 表函数地址
// 输入参数:void
// 输出参数:返回Shadow ssdt table
//
///////////////////////////////////////////////////////////////////////////////////
PSYSTEM_SERVICE_TABLE
GetKeServiceDescriptorTableShadow(VOID)
{
PSYSTEM_SERVICE_TABLE ShadowTable = NULL;
ULONG ServiceTableAddress = 0;
PUCHAR cPtr = NULL;
for (cPtr = (PUCHAR)KeAddSystemServiceTable;
cPtr < (PUCHAR)KeAddSystemServiceTable + PAGE_SIZE;
cPtr += 1 )
{
if (!MmIsAddressValid(cPtr)) continue;
ServiceTableAddress = *(PULONG)cPtr;
if (!MmIsAddressValid((PVOID)ServiceTableAddress)) continue;
if (memcmp((PVOID)ServiceTableAddress, &KeServiceDescriptorTable, 16) == 0)
{
if ((PVOID)ServiceTableAddress == &KeServiceDescriptorTable) continue;
ShadowTable = (PSYSTEM_SERVICE_TABLE)ServiceTableAddress;
ShadowTable ++;
return ShadowTable;
}
}
return NULL;
}
//
// 方法2,通过硬编码实现,不通用
//
PSYSTEM_SERVICE_TABLE
GetKeServiceDescriptorTableShadow_2(VOID)
/*++
805ba5a3 8d8840a65580 lea ecx,nt!KeServiceDescriptorTableShadow (8055a640)[eax]
805ba5a9 833900 cmp dword ptr [ecx],0
--*/
{
PSYSTEM_SERVICE_TABLE ShadowTable;
ULONG ServiceTableAddress;
PUCHAR cPtr, pOpcode;
ULONG Length = 0;
for (cPtr = (PUCHAR)KeAddSystemServiceTable;
cPtr < (PUCHAR)KeAddSystemServiceTable + PAGE_SIZE;
cPtr += Length )
{
if (!MmIsAddressValid(cPtr)) return NULL;
Length = SizeOfCode(cPtr, &pOpcode);
if (!Length || (Length == 1 && *pOpcode == 0xC3)) return NULL;
if (*(PUSHORT)pOpcode == 0x888D)
{
ServiceTableAddress = *(PULONG)(pOpcode + 2);
ShadowTable = (PSYSTEM_SERVICE_TABLE)ServiceTableAddress;
ShadowTable ++;
return ShadowTable;
}
}
return NULL;
}