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Dbgkp.c
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Dbgkp.c
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#include "Dbgkp.h"
#include <intrin.h>
#include "comm\SystemExportFunc.h"
#include "Struct.h"
#include "Peb.h"
#include "Dbg.h"
#include "comm\DbgStruct.h"
#include "SearchFunc.h"
#include <ntimage.h>
#include "tools\Module.h"
FAST_MUTEX DbgkpProcessDebugPortMutex;
POBJECT_TYPE g_HotGeDebugObject;
LONG g_DbgkpMaxModuleMsgs;
PEPROCESS PsGetThreadToAPCProcess(PETHREAD thread)
{
PETHREADWIN7 ethread = (PETHREADWIN7)thread;
return ethread->Tcb.ApcState.Process;
}
PVOID PsGetThreadWin32Address(PETHREAD thread)
{
PETHREADWIN7 ethread = (PETHREADWIN7)thread;
return ethread->Win32StartAddress;
}
PVOID PsGetThreadStartAddress(PETHREAD thread)
{
PETHREADWIN7 ethread = (PETHREADWIN7)thread;
return ethread->StartAddress;
}
BOOLEAN IsThreadSystem(PETHREAD thread)
{
PETHREADWIN7 ethread = (PETHREADWIN7)thread;
return (ethread->Tcb.MiscFlags >> 0xD) & 1;
}
ULONG GetThreadApcIndex(PETHREAD thread)
{
PETHREADWIN7 ethread = (PETHREADWIN7)thread;
return ethread->Tcb.ApcStateIndex;
}
BOOLEAN IsThreadInserted(PETHREAD thread)
{
PETHREADWIN7 ethread = (PETHREADWIN7)thread;
return (ethread->CrossThreadFlags >> 1) & 1;
}
BOOLEAN IsThreadSkipCreationMsg(PETHREAD thread)
{
PETHREADWIN7 ethread = (PETHREADWIN7)thread;
return (ethread->CrossThreadFlags >> 7) & 1;
}
BOOLEAN IsThreadHideFromDebugger(PETHREAD thread)
{
PETHREADWIN7 ethread = (PETHREADWIN7)thread;
return (ethread->CrossThreadFlags >> 2) & 1;
}
BOOLEAN IsThreadSkipTerminationMsg(PETHREAD thread)
{
PETHREADWIN7 ethread = (PETHREADWIN7)thread;
return (ethread->CrossThreadFlags >> 8) & 1;
}
CLIENT_ID GetThreadClientId(PETHREAD thread)
{
PETHREADWIN7 ethread = (PETHREADWIN7)thread;
return ethread->Cid;
}
VOID SetThreadCrossThreadFlags(PETHREAD thread, ULONG f)
{
PETHREADWIN7 ethread = (PETHREADWIN7)thread;
ethread->CrossThreadFlags |= f;
}
ULONG SetProcessFlags(PEPROCESS Process,ULONG Flags)
{
PEPROCESSWIN7 ProcessWin7 = (PEPROCESSWIN7)Process;
ULONG flags = ProcessWin7->Flags;
ProcessWin7->Flags |= Flags;
return flags;
}
PULONG_PTR GetProcessExPush(PEPROCESS Process)
{
PEPROCESSWIN7 ProcessWin7 = (PEPROCESSWIN7)Process;
return (PULONG_PTR)&ProcessWin7->ProcessLock;
}
PVOID GetSectionObject(PEPROCESS Process)
{
UNICODE_STRING uni = { 0 };
RtlInitUnicodeString(&uni, L"PsGetProcessSectionBaseAddress");
PUCHAR p = (PUCHAR)MmGetSystemRoutineAddress(&uni);
ULONG offset = *(PULONG)(p + 3);
if (offset)
{
offset -= 8;
}
return (PVOID)*(PULONG64)((ULONG64)Process + offset);
}
PVOID GeExceptionPort(PEPROCESS Process)
{
UNICODE_STRING uni = { 0 };
RtlInitUnicodeString(&uni, L"PsGetProcessDebugPort");
PUCHAR p = (PUCHAR)MmGetSystemRoutineAddress(&uni);
ULONG offset = *(PULONG)(p + 3);
if (offset)
{
offset += 8;
}
ULONG64 value = *(PULONG64)((ULONG64)Process + offset);
return (PVOID)value;
}
//定义内联函数
BOOLEAN EntryAcquireRundownProtectionByProcess(PEPROCESS eprocess)
{
PEPROCESSWIN7 eprocessWin7 = (PEPROCESSWIN7)(eprocess);
/*
_m_prefetchw(&eprocessWin7->RundownProtect);
ULONG64 value = (eprocessWin7->RundownProtect.Count & (~1I64));
if (InterlockedCompareExchange64(&eprocessWin7->RundownProtect, value + 2, value) == value)
{
return TRUE;
}
if (ExAcquireRundownProtection(&eprocessWin7->RundownProtect)) return TRUE;
*/
return ExAcquireRundownProtection(&eprocessWin7->RundownProtect);
}
VOID ExitReleaseRundownProtectionByProcess(PEPROCESS eprocess)
{
PEPROCESSWIN7 eprocessWin7 = (PEPROCESSWIN7)(eprocess);
/*
_m_prefetchw(&eprocessWin7->RundownProtect);
ULONG64 value = (eprocessWin7->RundownProtect.Count & (~1I64));
if (InterlockedCompareExchange64(&eprocessWin7->RundownProtect, value - 2, value) == value)
{
return;
}
*/
ExReleaseRundownProtection(&eprocessWin7->RundownProtect);
}
FORCEINLINE BOOLEAN EntryAcquireRundownProtectionByThread(PETHREAD thread)
{
PETHREADWIN7 threadWin7 = (PETHREADWIN7)(thread);
return ExAcquireRundownProtection(&threadWin7->RundownProtect);
}
FORCEINLINE VOID ExitReleaseRundownProtectionByThread(PETHREAD thread)
{
PETHREADWIN7 threadWin7 = (PETHREADWIN7)(thread);
ExReleaseRundownProtection(&threadWin7->RundownProtect);
}
ULONG GetProcessExitTimeOffset()
{
static ULONG offset = 0;
if (offset) return offset;
wchar_t wa_PsGetProcessExitTime[] = { 0xE3B3, 0xE390, 0xE3A4, 0xE386, 0xE397, 0xE3B3, 0xE391, 0xE38C, 0xE380, 0xE386, 0xE390, 0xE390, 0xE3A6, 0xE39B, 0xE38A, 0xE397, 0xE3B7, 0xE38A, 0xE38E, 0xE386, 0xE3E3, 0xE3E3 };
for (int i = 0; i < 22; i++)
{
wa_PsGetProcessExitTime[i] ^= 0x6D6D;
wa_PsGetProcessExitTime[i] ^= 0x8E8E;
};
UNICODE_STRING unFuncNamePsGetProcessExitTime = { 0 };
RtlInitUnicodeString(&unFuncNamePsGetProcessExitTime, wa_PsGetProcessExitTime);
PUCHAR funcPsGetProcessExitTime = (PUCHAR)MmGetSystemRoutineAddress(&unFuncNamePsGetProcessExitTime);
for (int i = 0; i < 100; i++)
{
if (funcPsGetProcessExitTime[i] == 0xc3 && (funcPsGetProcessExitTime[i + 1] == 0xcc || funcPsGetProcessExitTime[i + 1] == 0x90))
{
offset = *(PULONG)(funcPsGetProcessExitTime + i - 4);
break;
}
}
return offset;
}
PDEBUG_OBJECT HotGePsGetProcessDebugPort(PEPROCESS Process)
{
//PEPROCESSWIN7 pro = Process;
//return pro->DebugPort;
ULONG offset = GetProcessExitTimeOffset();
PDEBUG_OBJECT debug = (PDEBUG_OBJECT)*(PULONG64)((PUCHAR)Process + offset);
return debug;
}
VOID HotGePsSetProcessDebugPort(PEPROCESS Process,PDEBUG_OBJECT debugObject)
{
ULONG offset = GetProcessExitTimeOffset();
*(PULONG64)((PUCHAR)Process + offset) = debugObject;
}
NTSTATUS DbgkClearProcessDebugObject(
IN PEPROCESS Process,
IN PDEBUG_OBJECT SourceDebugObject
)
{
NTSTATUS status = STATUS_SUCCESS;
LIST_ENTRY TempList = {0};
PDEBUG_EVENT Entry = NULL;
ExAcquireFastMutex(&DbgkpProcessDebugPortMutex);
PDEBUG_OBJECT targerDebugObject = HotGePsGetProcessDebugPort(Process);
if (!targerDebugObject || (SourceDebugObject && SourceDebugObject != targerDebugObject))
{
status = STATUS_PORT_NOT_SET;
targerDebugObject = NULL;
}
else
{
HotGePsSetProcessDebugPort(Process,NULL);
status = STATUS_SUCCESS;
}
ExReleaseFastMutex(&DbgkpProcessDebugPortMutex);
if (NT_SUCCESS(status))
{
//DbgkpMarkProcessPeb(Process);
}
if (!targerDebugObject) return status;
InitializeListHead(&TempList);
ExAcquireFastMutex(&targerDebugObject->Mutex);
PLIST_ENTRY list = targerDebugObject->EventList.Flink;
while (list != &targerDebugObject->EventList)
{
Entry = (PDEBUG_EVENT)list;
list = list->Flink;
if (Entry->Process == Process) {
RemoveEntryList(&Entry->EventList);
InsertTailList(&TempList, &Entry->EventList);
}
}
ExReleaseFastMutex(&targerDebugObject->Mutex);
ObfDereferenceObject(targerDebugObject);
while (!IsListEmpty(&TempList)) {
PLIST_ENTRY Entry1 = RemoveHeadList(&TempList);
PDEBUG_EVENT DebugEvent = CONTAINING_RECORD(Entry1, DEBUG_EVENT, EventList);
DebugEvent->Status = STATUS_DEBUGGER_INACTIVE;
DbgkpWakeTarget(DebugEvent);
}
return status;
}
VOID DbgkpMarkProcessPeb(PEPROCESS Process)
{
if (!EntryAcquireRundownProtectionByProcess(Process))
{
return;
}
KAPC_STATE kapc = {0};
PEPROCESSWIN7 ProcessWin7 = (PEPROCESSWIN7)Process;
PMPEB peb = (PMPEB)ProcessWin7->Peb;
if (peb)
{
KeStackAttachProcess(Process, &kapc);
ExAcquireFastMutex(&DbgkpProcessDebugPortMutex);
peb->BeingDebugged = HotGePsGetProcessDebugPort(Process) != NULL;
if (PsGetProcessWow64Process(Process))
{
PsGetProcessWow64Process(Process)->BeingDebugged = peb->BeingDebugged;
}
ExReleaseFastMutex(&DbgkpProcessDebugPortMutex);
KeUnstackDetachProcess(&kapc);
}
ExitReleaseRundownProtectionByProcess(Process);
}
#define DEREF( name )*(UINT_PTR *)(name)
#define DEREF_64( name )*(unsigned __int64 *)(name)
#define DEREF_32( name )*(unsigned long *)(name)
#define DEREF_16( name )*(unsigned short *)(name)
#define DEREF_8( name )*(UCHAR *)(name)
ULONG_PTR GetProcAddressR(ULONG_PTR hModule, const char* lpProcName, BOOLEAN x64Module)
{
UINT_PTR uiLibraryAddress = 0;
ULONG_PTR fpResult = NULL;
if (hModule == NULL)
return NULL;
// a module handle is really its base address
uiLibraryAddress = (UINT_PTR)hModule;
__try
{
UINT_PTR uiAddressArray = 0;
UINT_PTR uiNameArray = 0;
UINT_PTR uiNameOrdinals = 0;
PIMAGE_NT_HEADERS32 pNtHeaders32 = NULL;
PIMAGE_NT_HEADERS64 pNtHeaders64 = NULL;
PIMAGE_DATA_DIRECTORY pDataDirectory = NULL;
PIMAGE_EXPORT_DIRECTORY pExportDirectory = NULL;
// get the VA of the modules NT Header
pNtHeaders32 = (PIMAGE_NT_HEADERS32)(uiLibraryAddress + ((PIMAGE_DOS_HEADER)uiLibraryAddress)->e_lfanew);
pNtHeaders64 = (PIMAGE_NT_HEADERS64)(uiLibraryAddress + ((PIMAGE_DOS_HEADER)uiLibraryAddress)->e_lfanew);
if (x64Module)
{
pDataDirectory = (PIMAGE_DATA_DIRECTORY)&pNtHeaders64->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT];
}
else
{
pDataDirectory = (PIMAGE_DATA_DIRECTORY)&pNtHeaders32->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT];
}
// get the VA of the export directory
pExportDirectory = (PIMAGE_EXPORT_DIRECTORY)(uiLibraryAddress + pDataDirectory->VirtualAddress);
// get the VA for the array of addresses
uiAddressArray = (uiLibraryAddress + pExportDirectory->AddressOfFunctions);
// get the VA for the array of name pointers
uiNameArray = (uiLibraryAddress + pExportDirectory->AddressOfNames);
// get the VA for the array of name ordinals
uiNameOrdinals = (uiLibraryAddress + pExportDirectory->AddressOfNameOrdinals);
// test if we are importing by name or by ordinal...
if ((PtrToUlong(lpProcName) & 0xFFFF0000) == 0x00000000)
{
// import by ordinal...
// use the import ordinal (- export ordinal base) as an index into the array of addresses
uiAddressArray += ((IMAGE_ORDINAL(PtrToUlong(lpProcName)) - pExportDirectory->Base) * sizeof(unsigned long));
// resolve the address for this imported function
fpResult = (ULONG_PTR)(uiLibraryAddress + DEREF_32(uiAddressArray));
}
else
{
// import by name...
unsigned long dwCounter = pExportDirectory->NumberOfNames;
while (dwCounter--)
{
char * cpExportedFunctionName = (char *)(uiLibraryAddress + DEREF_32(uiNameArray));
// test if we have a match...
if (strcmp(cpExportedFunctionName, lpProcName) == 0)
{
// use the functions name ordinal as an index into the array of name pointers
uiAddressArray += (DEREF_16(uiNameOrdinals) * sizeof(unsigned long));
// calculate the virtual address for the function
fpResult = (ULONG_PTR)(uiLibraryAddress + DEREF_32(uiAddressArray));
// finish...
break;
}
// get the next exported function name
uiNameArray += sizeof(unsigned long);
// get the next exported function name ordinal
uiNameOrdinals += sizeof(unsigned short);
}
}
}
__except (EXCEPTION_EXECUTE_HANDLER)
{
fpResult = NULL;
}
return fpResult;
}
static NTSTATUS NTAPI ZwProtectVirtualMemory(
__in HANDLE ProcessHandle,
__inout PVOID *BaseAddress,
__inout PSIZE_T RegionSize,
__in ULONG NewProtect,
__out PULONG OldProtect
)
{
typedef NTSTATUS(NTAPI *ZwProtectVirtualMemoryProc)(
__in HANDLE ProcessHandle,
__inout PVOID *BaseAddress,
__inout PSIZE_T RegionSize,
__in ULONG NewProtect,
__out PULONG OldProtect
);
static ZwProtectVirtualMemoryProc ZwProtectVirtualMemoryFunc = NULL;
if (!ZwProtectVirtualMemoryFunc)
{
UNICODE_STRING uNname = { 0 };
RtlInitUnicodeString(&uNname, L"ZwIsProcessInJob");
PUCHAR func = (PUCHAR)MmGetSystemRoutineAddress(&uNname);
if (func)
{
func += 20;
for (int i = 0; i < 0x100; i++)
{
if (func[i] == 0x48 && func[i + 1] == 0x8b && func[i + 2] == 0xc4)
{
ZwProtectVirtualMemoryFunc = (ZwProtectVirtualMemoryProc)(func + i);
break;
}
}
}
}
if (ZwProtectVirtualMemoryFunc)
{
return ZwProtectVirtualMemoryFunc(ProcessHandle, BaseAddress, RegionSize, NewProtect, OldProtect);
}
return STATUS_NOT_IMPLEMENTED;
}
VOID DbgkpHandlerFirstInt3()
{
ULONG64 module = GetModuleR3(PsGetCurrentProcessId(), "ntdll.dll", NULL);
PPEB32 peb32 = (PPEB32)PsGetProcessWow64Process(IoGetCurrentProcess());
if (peb32)
{
//ULONG64 DbgUiRemoteBreakin = GetProcAddressR(module, "DbgUiRemoteBreakin", FALSE);
ULONG64 DbgBreakPoint1 = GetProcAddressR(module, "DbgBreakPoint", FALSE);
ULONG64 DbgUiIssueRemoteBreakin = GetProcAddressR(module, "DbgUiIssueRemoteBreakin", FALSE);
ULONG64 temp = DbgUiIssueRemoteBreakin;
SIZE_T tempSize = 0x200;
ULONG pro = 0;
//
NTSTATUS st = ZwProtectVirtualMemory(NtCurrentProcess(), &temp, &tempSize, PAGE_EXECUTE_READWRITE, &pro);
if (NT_SUCCESS(st))
{
PUCHAR tempC = DbgUiIssueRemoteBreakin;
for (int i = 0; i < 100; i++)
{
if (tempC[i] == 0x68)
{
*(PULONG)&tempC[i + 1] = DbgBreakPoint1;
DbgPrintEx(77, 0, "[db]:x86 replace flish\r\n");
break;
}
}
ZwProtectVirtualMemory(NtCurrentProcess(), &temp, &tempSize, pro, &pro);
}
}
else
{
ULONG64 DbgBreakPoint1 = GetProcAddressR(module, "DbgBreakPoint", TRUE);
ULONG64 DbgUiIssueRemoteBreakin = GetProcAddressR(module, "DbgUiIssueRemoteBreakin", TRUE);
ULONG64 temp = DbgUiIssueRemoteBreakin;
SIZE_T tempSize = 0x200;
ULONG pro = 0;
//
NTSTATUS st = ZwProtectVirtualMemory(NtCurrentProcess(), &temp, &tempSize, PAGE_EXECUTE_READWRITE, &pro);
if (NT_SUCCESS(st))
{
PUCHAR tempC = DbgUiIssueRemoteBreakin;
for (int i = 0; i < 100; i++)
{
if (tempC[i] == 0x48 && tempC[i + 1] == 0x8d && tempC[i + 2] == 0x5)
{
ULONG64 next = (ULONG64)(tempC + i + 7);
ULONG64 offset = DbgBreakPoint1 - next;
*(PLONG)&tempC[i + 3] = offset;
DbgPrintEx(77, 0, "[db]:replace flish\r\n");
break;
}
}
ZwProtectVirtualMemory(NtCurrentProcess(), &temp, &tempSize, pro, &pro);
}
}
}
VOID DbgkpFreeDebugEvent(IN PDEBUG_EVENT DebugEvent)
{
NTSTATUS Status;
switch (DebugEvent->ApiMsg.ApiNumber) {
case DbgKmCreateProcessApi:
if (DebugEvent->ApiMsg.u.CreateProcessInfo.FileHandle != NULL) {
Status = ObCloseHandle(DebugEvent->ApiMsg.u.CreateProcessInfo.FileHandle, KernelMode);
}
break;
case DbgKmLoadDllApi:
if (DebugEvent->ApiMsg.u.LoadDll.FileHandle != NULL) {
Status = ObCloseHandle(DebugEvent->ApiMsg.u.LoadDll.FileHandle, KernelMode);
}
break;
}
ObDereferenceObject(DebugEvent->Process);
ObDereferenceObject(DebugEvent->Thread);
ExFreePool(DebugEvent);
}
VOID DbgkpWakeTarget(IN PDEBUG_EVENT DebugEvent)
{
PETHREADWIN7 Thread = (PETHREADWIN7)DebugEvent->Thread;
if ((DebugEvent->Flags&DEBUG_EVENT_SUSPEND) != 0) {
PsResumeThread(DebugEvent->Thread, NULL);
}
if (DebugEvent->Flags & DEBUG_EVENT_RELEASE) {
ExReleaseRundownProtection(&Thread->RundownProtect);
}
if ((DebugEvent->Flags&DEBUG_EVENT_NOWAIT) == 0) {
KeSetEvent(&DebugEvent->ContinueEvent, 0, FALSE); // Wake up waiting process
}
else {
DbgkpFreeDebugEvent(DebugEvent);
}
}
NTSTATUS DbgkpPostModuleMessages(
IN PEPROCESS Process,
IN PETHREAD Thread,
IN PDEBUG_OBJECT DebugObject)
{
PMPEB peb = (PMPEB)PsGetProcessPeb(Process);
DBGKM_APIMSG apiMsg;
NTSTATUS status = STATUS_UNSUCCESSFUL;
PLDR_DATA_TABLE_ENTRY list =(PLDR_DATA_TABLE_ENTRY)&peb->Ldr->InLoadOrderModuleList;
if ((ULONG64)list >= MmUserProbeAddress)
{
return STATUS_UNSUCCESSFUL;
}
PLDR_DATA_TABLE_ENTRY listEntry = list;
PLDR_DATA_TABLE_ENTRY listNext= (PLDR_DATA_TABLE_ENTRY)list->InLoadOrderLinks.Flink;
ULONG count = 0;
while (listEntry != listNext && count < g_DbgkpMaxModuleMsgs)
{
if (count > 1)
{
memset(&apiMsg, 0, sizeof(apiMsg));
apiMsg.ApiNumber = DbgKmLoadDllApi;
apiMsg.u.LoadDll.BaseOfDll = listNext->DllBase;
PIMAGE_NT_HEADERS pNts = RtlImageNtHeader(apiMsg.u.LoadDll.BaseOfDll);
if (pNts)
{
apiMsg.u.LoadDll.DebugInfoFileOffset = pNts->FileHeader.PointerToSymbolTable;
apiMsg.u.LoadDll.DebugInfoSize = pNts->FileHeader.NumberOfSymbols;
}
UNICODE_STRING unName = {0};
status = MmGetFileNameForAddress(apiMsg.u.LoadDll.BaseOfDll, &unName);
if (NT_SUCCESS(status))
{
OBJECT_ATTRIBUTES ObjectAttributes;
InitializeObjectAttributes(&ObjectAttributes, &unName, OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE | OBJ_FORCE_ACCESS_CHECK, NULL, NULL);
IO_STATUS_BLOCK IoStatusBlock = {0};
status = ZwOpenFile(&apiMsg.u.LoadDll.FileHandle, GENERIC_READ | SYNCHRONIZE, &ObjectAttributes, &IoStatusBlock, FILE_SHARE_VALID_FLAGS, FILE_SYNCHRONOUS_IO_NONALERT);
if (!NT_SUCCESS(status)) {
apiMsg.u.LoadDll.FileHandle = NULL;
}
ExFreePoolWithTag(unName.Buffer, 0);
}
if (DebugObject)
{
status = DbgkpQueueMessage(Process, Thread, &apiMsg, DEBUG_EVENT_NOWAIT, DebugObject);
}
else
{
DbgkpSendApiMessage(DEBUG_EVENT_NOWAIT | DEBUG_READ_EVENT, &apiMsg);
status = STATUS_UNSUCCESSFUL;
}
if (!NT_SUCCESS(status) && apiMsg.u.LoadDll.FileHandle)
{
ObCloseHandle(apiMsg.u.LoadDll.FileHandle, KernelMode);
apiMsg.u.LoadDll.FileHandle = NULL;
}
}
listNext = (PLDR_DATA_TABLE_ENTRY)listNext->InLoadOrderLinks.Flink;
count++;
}
//在判断是不是wow64进程
PPEB32 peb32 = PsGetProcessWow64Process(Process);
if (!peb32) return STATUS_SUCCESS;
PEB_LDR_DATA32 * ldr32 = (PEB_LDR_DATA32 *)ULongToPtr(peb32->Ldr);
LDR_DATA_TABLE_ENTRY32 *list32 = (LDR_DATA_TABLE_ENTRY32 *)&ldr32->InLoadOrderModuleList;
LDR_DATA_TABLE_ENTRY32 *list32Next = (LDR_DATA_TABLE_ENTRY32 *)list32->InLoadOrderLinks.Flink;
count = 0;
while (list32Next != list32 && count < g_DbgkpMaxModuleMsgs)
{
if (count > 1)
{
memset(&apiMsg, 0, sizeof(apiMsg));
apiMsg.ApiNumber = DbgKmLoadDllApi;
apiMsg.u.LoadDll.BaseOfDll = (PVOID)list32Next->DllBase;
PIMAGE_NT_HEADERS pNts = RtlImageNtHeader(apiMsg.u.LoadDll.BaseOfDll);
if (pNts)
{
apiMsg.u.LoadDll.DebugInfoFileOffset = pNts->FileHeader.PointerToSymbolTable;
apiMsg.u.LoadDll.DebugInfoSize = pNts->FileHeader.NumberOfSymbols;
}
UNICODE_STRING unName = { 0 };
status = MmGetFileNameForAddress(apiMsg.u.LoadDll.BaseOfDll, &unName);
if (NT_SUCCESS(status))
{
PWCHAR findStr = wcsstr(unName.Buffer, L"\\SYSTEM32\\");
if (findStr)
{
wcscpy(findStr + 1, L"SysWOW64");
}
OBJECT_ATTRIBUTES ObjectAttributes;
InitializeObjectAttributes(&ObjectAttributes, &unName, OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE | OBJ_FORCE_ACCESS_CHECK, NULL, NULL);
IO_STATUS_BLOCK IoStatusBlock = { 0 };
status = ZwOpenFile(&apiMsg.u.LoadDll.FileHandle, GENERIC_READ | SYNCHRONIZE, &ObjectAttributes, &IoStatusBlock, FILE_SHARE_VALID_FLAGS, FILE_SYNCHRONOUS_IO_NONALERT);
if (!NT_SUCCESS(status)) {
apiMsg.u.LoadDll.FileHandle = NULL;
}
ExFreePoolWithTag(unName.Buffer, 0);
}
if (DebugObject)
{
status = DbgkpQueueMessage(Process, Thread, &apiMsg, DEBUG_EVENT_NOWAIT, DebugObject);
}
else
{
DbgkpSendApiMessage(DEBUG_EVENT_NOWAIT | DEBUG_READ_EVENT, &apiMsg);
status = STATUS_UNSUCCESSFUL;
}
if (!NT_SUCCESS(status) && apiMsg.u.LoadDll.FileHandle)
{
ObCloseHandle(apiMsg.u.LoadDll.FileHandle, KernelMode);
apiMsg.u.LoadDll.FileHandle = NULL;
}
}
count++;
list32Next = (LDR_DATA_TABLE_ENTRY32 *)list32Next->InLoadOrderLinks.Flink;
}
return count;
}
NTSTATUS DbgkpQueueMessage(
IN PEPROCESS Process,
IN PETHREAD Thread,
IN OUT PDBGKM_APIMSG ApiMsg,
IN ULONG Flags,
IN PDEBUG_OBJECT TargetDebugObject
)
{
//DbgBreakPoint();
PDEBUG_OBJECT pDebugObject = NULL;
PDEBUG_EVENT pDebugEvent = { 0 };
DEBUG_EVENT mDebugEvent = {0};
BOOLEAN isThreadSkipCreationMsg = FALSE;
ULONG mFlags = Flags;
NTSTATUS status = STATUS_UNSUCCESSFUL;
//PDBGKM_APIMSG SaveApiMsg = NULL;
if (mFlags & DEBUG_EVENT_NOWAIT)
{
pDebugEvent = (PDEBUG_EVENT)ExAllocatePoolWithQuotaTag(POOL_QUOTA_FAIL_INSTEAD_OF_RAISE, sizeof(DEBUG_EVENT), 'EgbD');
if (!pDebugEvent) return STATUS_INSUFFICIENT_RESOURCES;
pDebugEvent->Flags = mFlags | DEBUG_EVENT_INACTIVE;
ObReferenceObject(Process);
ObReferenceObject(Thread);
pDebugObject = TargetDebugObject;
pDebugEvent->BackoutThread = KeGetCurrentThread();
}
else
{
pDebugEvent = &mDebugEvent;
mDebugEvent.Flags = mFlags;
ExAcquireFastMutex(&DbgkpProcessDebugPortMutex);
DBGKM_APINUMBER apiNumber = ApiMsg->ApiNumber;
pDebugObject = HotGePsGetProcessDebugPort(Process);
if ((apiNumber == DbgKmCreateThreadApi || apiNumber == DbgKmCreateProcessApi))
{
isThreadSkipCreationMsg = IsThreadSkipCreationMsg(Thread);
if (isThreadSkipCreationMsg)
{
pDebugObject = NULL;
}
}
if ((apiNumber == DbgKmLoadDllApi) && IsThreadSkipCreationMsg(Thread) && (mFlags & 0x40))
{
pDebugObject = NULL;
}
if ((apiNumber == DbgKmExitThreadApi || apiNumber == DbgKmExitProcessApi) && IsThreadSkipTerminationMsg(Thread))
{
pDebugObject = NULL;
}
KeInitializeEvent(&mDebugEvent.ContinueEvent, SynchronizationEvent, 0);
}
//SaveApiMsg = &pDebugEvent->ApiMsg;
pDebugEvent->Process = Process;
pDebugEvent->Thread = Thread;
memcpy(&pDebugEvent->ApiMsg, ApiMsg, sizeof(DBGKM_APIMSG));
pDebugEvent->ClientId = GetThreadClientId(Thread);
//pDebugEvent->ClientId.UniqueProcess = PsGetProcessId(Process);
//pDebugEvent->ClientId.UniqueThread = PsGetThreadId(Thread);
if (pDebugObject)
{
ExAcquireFastMutex(&pDebugObject->Mutex);
if (pDebugObject->Flags & DEBUG_OBJECT_DELETE_PENDING)
{
status = STATUS_DEBUGGER_INACTIVE;
}
else
{
InsertTailList(&pDebugObject->EventList, &pDebugEvent->EventList);
if ((mFlags & DEBUG_EVENT_NOWAIT) == 0)
{
KeSetEvent(&pDebugObject->EventsPresent, 0, 0);
}
status = STATUS_SUCCESS;
}
ExReleaseFastMutex(&pDebugObject->Mutex);
//SaveApiMsg = &pDebugEvent->ApiMsg;
}
else
{
status = STATUS_PORT_NOT_SET;
}
if ((mFlags & DEBUG_EVENT_NOWAIT))
{
if (!NT_SUCCESS(status))
{
ObDereferenceObject(Process);
ObDereferenceObject(Thread);
ExFreePoolWithTag(pDebugEvent, 0);
}
}
else
{
ExReleaseFastMutex(&DbgkpProcessDebugPortMutex);
if (NT_SUCCESS(status))
{
KeWaitForSingleObject(&pDebugEvent->ContinueEvent, Executive, KernelMode, FALSE,NULL);
status = pDebugEvent->Status;
RtlCopyMemory(ApiMsg, &pDebugEvent->ApiMsg, sizeof(DBGKM_APIMSG));
}
}
return status;
}
NTSTATUS DbgkpPostFakeThreadMessages(
PEPROCESS Process,
PDEBUG_OBJECT DebugObject,
PETHREAD StartThread,
PETHREAD* pFirstThread,
PETHREAD* pLastThread)
{
NTSTATUS status;
PETHREAD Thread, FirstThread, LastThread, CurrentThread;
DBGKM_APIMSG ApiMsg;
BOOLEAN First = TRUE;
BOOLEAN IsFirstThread;
PIMAGE_NT_HEADERS NtHeaders;
ULONG Flags;
KAPC_STATE ApcState;
status = STATUS_UNSUCCESSFUL;
LastThread = FirstThread = NULL;
CurrentThread = (PETHREAD)PsGetCurrentThread();
if (StartThread == 0)
{
StartThread = (PETHREAD)PsGetNextProcessThread((PEPROCESS)Process, 0);
First = TRUE;
}
else {
First = FALSE;
FirstThread = StartThread;
ObReferenceObject(StartThread);
}
for (Thread = StartThread;
Thread != NULL;
Thread = (PETHREAD)PsGetNextProcessThread((PEPROCESS)Process, (PETHREAD)Thread))
{
Flags = DEBUG_EVENT_NOWAIT;
if (LastThread != 0)
{
ObDereferenceObject(LastThread);
}
LastThread = Thread;
ObReferenceObject(LastThread);
if (IsThreadSystem(Thread))
{
continue;
}
if (!IsThreadInserted(Thread))//这里要注意下位操作
{
//这个涉及的内容也比较多，而且一般也不会进入这里，所以为了简单注释掉好了
PsSynchronizeWithThreadInsertion(Thread,CurrentThread);
if (!IsThreadInserted(Thread))
{
continue;
}
}
if (EntryAcquireRundownProtectionByThread(Thread))
{
Flags |= DEBUG_EVENT_RELEASE;
status = PsSuspendThread((PETHREAD)Thread, 0);
if (NT_SUCCESS(status))
{
Flags |= DEBUG_EVENT_SUSPEND;
}
}
else {
Flags |= DEBUG_EVENT_PROTECT_FAILED;
}
//每次构造一个DBGKM_APIMSG结构
memset(&ApiMsg, 0, sizeof(DBGKM_APIMSG));
if (First && (Flags & DEBUG_EVENT_PROTECT_FAILED) == 0)
{
//进程的第一个线程才会到这里
IsFirstThread = TRUE;
ApiMsg.ApiNumber = DbgKmCreateProcessApi;
PVOID pSection = GetSectionObject(Process);
if (pSection)
{
ApiMsg.u.CreateProcessInfo.FileHandle = DbgkpProcessToFileHandle(Process);
}
else {
ApiMsg.u.CreateProcessInfo.FileHandle = NULL;
}
ApiMsg.u.CreateProcessInfo.BaseOfImage = PsGetProcessSectionBaseAddress(Process);
KeStackAttachProcess((PRKPROCESS)Process, &ApcState);
__try {
NtHeaders = RtlImageNtHeader(ApiMsg.u.CreateProcessInfo.BaseOfImage);
if (NtHeaders)
{
ApiMsg.u.CreateProcessInfo.InitialThread.StartAddress = NULL;
ApiMsg.u.CreateProcessInfo.DebugInfoFileOffset = NtHeaders->FileHeader.PointerToSymbolTable;
ApiMsg.u.CreateProcessInfo.DebugInfoSize = NtHeaders->FileHeader.NumberOfSymbols;
}
}_except(EXCEPTION_EXECUTE_HANDLER) {
ApiMsg.u.CreateProcessInfo.InitialThread.StartAddress = NULL;
ApiMsg.u.CreateProcessInfo.DebugInfoFileOffset = 0;
ApiMsg.u.CreateProcessInfo.DebugInfoSize = 0;
}
KeUnstackDetachProcess(&ApcState);
}
else {
IsFirstThread = FALSE;
ApiMsg.ApiNumber = DbgKmCreateThreadApi;
ApiMsg.u.CreateThread.StartAddress = PsGetThreadStartAddress(Thread);//注意偏移
}
status = DbgkpQueueMessage(
Process,
Thread,
&ApiMsg,
Flags,
DebugObject);
if (!NT_SUCCESS(status))
{
if (Flags & DEBUG_EVENT_SUSPEND)
{
PsResumeThread((PETHREAD)Thread,NULL);
}
if (Flags & DEBUG_EVENT_RELEASE)
{
ExitReleaseRundownProtectionByThread(Thread);
}
if (ApiMsg.ApiNumber == DbgKmCreateProcessApi && ApiMsg.u.CreateProcessInfo.FileHandle != NULL)