cheat-engine/DBKKernel/DBKDrvr.c

#pragma warning( disable: 4100 4101 4103 4189)

#include "DBKFunc.h"
#include <ntifs.h>
#include <windef.h>
#include "DBKDrvr.h"

#include "deepkernel.h"
#include "processlist.h"
#include "memscan.h"
#include "threads.h"
#include "vmxhelper.h"
#include "debugger.h"
#include "vmxoffload.h"

#include "IOPLDispatcher.h"
#include "interruptHook.h"
#include "ultimap.h"
#include "ultimap2.h"
#include "noexceptions.h"

#include "ultimap2\apic.h"


#if (AMD64 && TOBESIGNED)
#include "sigcheck.h"
#endif


#ifdef CETC
	#include "cetc.h"
#endif


void UnloadDriver(PDRIVER_OBJECT DriverObject);

NTSTATUS DispatchCreate(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp);
NTSTATUS DispatchClose(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp);


#ifndef AMD64
//no api hooks for x64

//-----NtUserSetWindowsHookEx----- //prevent global hooks
typedef ULONG (NTUSERSETWINDOWSHOOKEX)(
    IN HANDLE hmod,
    IN PUNICODE_STRING pstrLib OPTIONAL,
    IN DWORD idThread,
    IN int nFilterType,
    IN PVOID pfnFilterProc,
    IN DWORD dwFlags
);
NTUSERSETWINDOWSHOOKEX OldNtUserSetWindowsHookEx;
ULONG NtUserSetWindowsHookEx_callnumber;
//HHOOK NewNtUserSetWindowsHookEx(IN HANDLE hmod,IN PUNICODE_STRING pstrLib OPTIONAL,IN DWORD idThread,IN int nFilterType, IN PROC pfnFilterProc,IN DWORD dwFlags);


typedef NTSTATUS (*ZWSUSPENDPROCESS)
(
    IN ULONG ProcessHandle  // Handle to the process
);
ZWSUSPENDPROCESS ZwSuspendProcess;

NTSTATUS ZwCreateThread(
	OUT PHANDLE  ThreadHandle,
	IN ACCESS_MASK  DesiredAccess,
	IN POBJECT_ATTRIBUTES  ObjectAttributes,
	IN HANDLE  ProcessHandle,
	OUT PCLIENT_ID  ClientId,
	IN PCONTEXT  ThreadContext,
	IN PVOID  UserStack,
	IN BOOLEAN  CreateSuspended);

//PVOID GetApiEntry(ULONG FunctionNumber);
#endif





typedef NTSTATUS(*PSRCTNR)(__in PCREATE_THREAD_NOTIFY_ROUTINE NotifyRoutine);
PSRCTNR PsRemoveCreateThreadNotifyRoutine2;

typedef NTSTATUS(*PSRLINR)(__in PLOAD_IMAGE_NOTIFY_ROUTINE NotifyRoutine);
PSRLINR PsRemoveLoadImageNotifyRoutine2;

UNICODE_STRING  uszDeviceString;
PVOID BufDeviceString=NULL;



void hideme(PDRIVER_OBJECT DriverObject)
{
#ifndef AMD64
	
	typedef struct _MODULE_ENTRY {
	LIST_ENTRY le_mod;
	DWORD  unknown[4];
	DWORD  base;
	DWORD  driver_start;
	DWORD  unk1;
	UNICODE_STRING driver_Path;
	UNICODE_STRING driver_Name;
} MODULE_ENTRY, *PMODULE_ENTRY;

	PMODULE_ENTRY pm_current;

	pm_current =  *((PMODULE_ENTRY*)((DWORD)DriverObject + 0x14)); //eeeeew

	*((PDWORD)pm_current->le_mod.Blink)        = (DWORD) pm_current->le_mod.Flink;
	pm_current->le_mod.Flink->Blink            = pm_current->le_mod.Blink;
	HiddenDriver=TRUE;

#endif
}


int testfunction(int p1,int p2)
{
	DbgPrint("Hello\nParam1=%d\nParam2=%d\n",p1,p2);
	


	return 0x666;
}


void* functionlist[1];
char  paramsizes[1];
int registered=0;

#ifdef DEBUG1
VOID TestPassive(UINT_PTR param)
{
	DbgPrint("passive cpu call for cpu %d\n", KeGetCurrentProcessorNumber());
}


VOID TestDPC(IN struct _KDPC *Dpc, IN PVOID  DeferredContext, IN PVOID  SystemArgument1, IN PVOID  SystemArgument2)
{
	EFLAGS e=getEflags();
	
    DbgPrint("Defered cpu call for cpu %d (Dpc=%p  IF=%d IRQL=%d)\n", KeGetCurrentProcessorNumber(), Dpc, e.IF, KeGetCurrentIrql());
}
#endif


NTSTATUS DriverEntry(IN PDRIVER_OBJECT DriverObject,
	IN PUNICODE_STRING RegistryPath)
	/*++

	Routine Description:

	This routine is called when the driver is loaded by NT.

	Arguments:

	DriverObject - Pointer to driver object created by system.
	RegistryPath - Pointer to the name of the services node for this driver.

	Return Value:

	The function value is the final status from the initialization operation.

	--*/
{


	NTSTATUS        ntStatus;
	PVOID           BufDriverString = NULL, BufProcessEventString = NULL, BufThreadEventString = NULL;
	UNICODE_STRING  uszDriverString;

	UNICODE_STRING  uszProcessEventString;
	UNICODE_STRING	uszThreadEventString;
	PDEVICE_OBJECT  pDeviceObject;
	HANDLE reg = 0;
	OBJECT_ATTRIBUTES oa;

	UNICODE_STRING temp;
	char wbuf[100];
	WORD this_cs, this_ss, this_ds, this_es, this_fs, this_gs;
	ULONG cr4reg;



	criticalSection csTest;

	HANDLE Ultimap2Handle;


	KernelCodeStepping = 0;
	KernelWritesIgnoreWP = 0;



	this_cs = getCS();
	this_ss = getSS();
	this_ds = getDS();
	this_es = getES();
	this_fs = getFS();
	this_gs = getGS();

	temp.Buffer = (PWCH)wbuf;
	temp.Length = 0;
	temp.MaximumLength = 100;

	//DbgPrint("Loading driver\n");
	if (RegistryPath)
	{
		//DbgPrint("Registry path = %S\n", RegistryPath->Buffer);

		InitializeObjectAttributes(&oa, RegistryPath, OBJ_KERNEL_HANDLE, NULL, NULL);
		ntStatus = ZwOpenKey(&reg, KEY_QUERY_VALUE, &oa);
		if (ntStatus == STATUS_SUCCESS)
		{
			UNICODE_STRING A, B, C, D;
			PKEY_VALUE_PARTIAL_INFORMATION bufA, bufB, bufC, bufD;
			ULONG ActualSize;

			//DbgPrint("Opened the key\n");

			BufDriverString = ExAllocatePool(PagedPool, sizeof(KEY_VALUE_PARTIAL_INFORMATION) + 100);
			BufDeviceString = ExAllocatePool(PagedPool, sizeof(KEY_VALUE_PARTIAL_INFORMATION) + 100);
			BufProcessEventString = ExAllocatePool(PagedPool, sizeof(KEY_VALUE_PARTIAL_INFORMATION) + 100);
			BufThreadEventString = ExAllocatePool(PagedPool, sizeof(KEY_VALUE_PARTIAL_INFORMATION) + 100);

			bufA = BufDriverString;
			bufB = BufDeviceString;
			bufC = BufProcessEventString;
			bufD = BufThreadEventString;

			RtlInitUnicodeString(&A, L"A");
			RtlInitUnicodeString(&B, L"B");
			RtlInitUnicodeString(&C, L"C");
			RtlInitUnicodeString(&D, L"D");

			if (ntStatus == STATUS_SUCCESS)
				ntStatus = ZwQueryValueKey(reg, &A, KeyValuePartialInformation, bufA, sizeof(KEY_VALUE_PARTIAL_INFORMATION) + 100, &ActualSize);
			if (ntStatus == STATUS_SUCCESS)
				ntStatus = ZwQueryValueKey(reg, &B, KeyValuePartialInformation, bufB, sizeof(KEY_VALUE_PARTIAL_INFORMATION) + 100, &ActualSize);
			if (ntStatus == STATUS_SUCCESS)
				ntStatus = ZwQueryValueKey(reg, &C, KeyValuePartialInformation, bufC, sizeof(KEY_VALUE_PARTIAL_INFORMATION) + 100, &ActualSize);
			if (ntStatus == STATUS_SUCCESS)
				ntStatus = ZwQueryValueKey(reg, &D, KeyValuePartialInformation, bufD, sizeof(KEY_VALUE_PARTIAL_INFORMATION) + 100, &ActualSize);

			if (ntStatus == STATUS_SUCCESS)
			{
				//DbgPrint("Read ok\n");
				RtlInitUnicodeString(&uszDriverString, (PCWSTR)bufA->Data);
				RtlInitUnicodeString(&uszDeviceString, (PCWSTR)bufB->Data);
				RtlInitUnicodeString(&uszProcessEventString, (PCWSTR)bufC->Data);
				RtlInitUnicodeString(&uszThreadEventString, (PCWSTR)bufD->Data);

				//DbgPrint("DriverString=%S\n", uszDriverString.Buffer);
				//DbgPrint("DeviceString=%S\n", uszDeviceString.Buffer);
				//DbgPrint("ProcessEventString=%S\n", uszProcessEventString.Buffer);
				//DbgPrint("ThreadEventString=%S\n", uszThreadEventString.Buffer);
			}
			else
			{
				ExFreePool(bufA);
				ExFreePool(bufB);
				ExFreePool(bufC);
				ExFreePool(bufD);

				//DbgPrint("Failed reading the value\n");
				ZwClose(reg);
				return STATUS_UNSUCCESSFUL;;
			}

		}
		else
		{
			//DbgPrint("Failed opening the key\n");
			return STATUS_UNSUCCESSFUL;;
		}
	}
	else
		loadedbydbvm = TRUE;

	ntStatus = STATUS_SUCCESS;





	if (!loadedbydbvm)
	{

		// Point uszDriverString at the driver name
#ifndef CETC


		// Create and initialize device object
		ntStatus = IoCreateDevice(DriverObject,
			0,
			&uszDriverString,
			FILE_DEVICE_UNKNOWN,
			0,
			FALSE,
			&pDeviceObject);

		if (ntStatus != STATUS_SUCCESS)
		{
			//DbgPrint("IoCreateDevice failed\n");
			ExFreePool(BufDriverString);
			ExFreePool(BufDeviceString);
			ExFreePool(BufProcessEventString);
			ExFreePool(BufThreadEventString);


			if (reg)
				ZwClose(reg);

			return ntStatus;
		}

		// Point uszDeviceString at the device name

		// Create symbolic link to the user-visible name
		ntStatus = IoCreateSymbolicLink(&uszDeviceString, &uszDriverString);

		if (ntStatus != STATUS_SUCCESS)
		{
			//DbgPrint("IoCreateSymbolicLink failed: %x\n", ntStatus);
			// Delete device object if not successful
			IoDeleteDevice(pDeviceObject);

			ExFreePool(BufDriverString);
			ExFreePool(BufDeviceString);
			ExFreePool(BufProcessEventString);
			ExFreePool(BufThreadEventString);


			if (reg)
				ZwClose(reg);

			return ntStatus;
		}

#endif
	}

	//when loaded by dbvm driver object is 'valid' so store the function addresses


	//DbgPrint("DriverObject=%p\n", DriverObject);

	// Load structure to point to IRP handlers...
	DriverObject->DriverUnload = UnloadDriver;
	DriverObject->MajorFunction[IRP_MJ_CREATE] = DispatchCreate;
	DriverObject->MajorFunction[IRP_MJ_CLOSE] = DispatchClose;

	if (loadedbydbvm)
		DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = (PDRIVER_DISPATCH)DispatchIoctlDBVM;
	else
		DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = DispatchIoctl;



	//Processlist init
#ifndef CETC
	ProcessEventCount = 0;
	ExInitializeResourceLite(&ProcesslistR);
#endif

	CreateProcessNotifyRoutineEnabled = FALSE;

	//threadlist init
	ThreadEventCount = 0;

	processlist = NULL;

#ifndef AMD64
	//determine if PAE is used
	cr4reg=(ULONG)getCR4();

	if ((cr4reg & 0x20)==0x20)
	{
		PTESize=8; //pae
		PAGE_SIZE_LARGE=0x200000;
		MAX_PDE_POS=0xC0604000;
		MAX_PTE_POS=0xC07FFFF8;


	}
	else
	{
		PTESize=4;
		PAGE_SIZE_LARGE=0x400000;
		MAX_PDE_POS=0xC0301000;
		MAX_PTE_POS=0xC03FFFFC;
	}
#else
	PTESize = 8; //pae
	PAGE_SIZE_LARGE = 0x200000;
	//base was 0xfffff68000000000ULL

	//to 
	MAX_PTE_POS = 0xFFFFF6FFFFFFFFF8ULL; // base + 0x7FFFFFFFF8
	MAX_PDE_POS = 0xFFFFF6FB7FFFFFF8ULL; // base + 0x7B7FFFFFF8
#endif



#ifdef CETC
	DbgPrint("Going to initialice CETC\n");
	InitializeCETC();
#endif


	//hideme(DriverObject); //ok, for those that see this, enabling this WILL fuck up try except routines, even in usermode you'll get a blue sreen

	DbgPrint("Initializing debugger\n");
	debugger_initialize();


	// Return success (don't do the devicestring, I need it for unload)
	DbgPrint("Cleaning up initialization buffers\n");
	if (BufDriverString)
	{
		ExFreePool(BufDriverString);
		BufDriverString = NULL;
	}

	if (BufProcessEventString)
	{
		ExFreePool(BufProcessEventString);
		BufProcessEventString = NULL;
	}

	if (BufThreadEventString)
	{
		ExFreePool(BufThreadEventString);
		BufThreadEventString = NULL;
	}

	if (reg)
	{
		ZwClose(reg);
		reg = 0;
	}



	//fetch cpu info
	{
		DWORD r[4];
		DWORD a;

		__cpuid(r, 0);
		DbgPrint("cpuid.0: r[1]=%x", r[1]);
		if (r[1] == 0x756e6547) //GenuineIntel
		{

			__cpuid(r, 1);

			a = r[0];

			cpu_stepping = a & 0xf;
			cpu_model = (a >> 4) & 0xf;
			cpu_familyID = (a >> 8) & 0xf;
			cpu_type = (a >> 12) & 0x3;
			cpu_ext_modelID = (a >> 16) & 0xf;
			cpu_ext_familyID = (a >> 20) & 0xff;

			cpu_model = cpu_model + (cpu_ext_modelID << 4);
			cpu_familyID = cpu_familyID + (cpu_ext_familyID << 4);

			vmx_init_dovmcall(1);
			setup_APIC_BASE(); //for ultimap

		}
		else
		{
			DbgPrint("Not an intel cpu");
			if (r[1] == 0x68747541)
			{
				DbgPrint("This is an AMD\n");
				vmx_init_dovmcall(0);
			}

		}



	}

#ifdef DEBUG1
	{
		APIC y;

		DebugStackState x;
		DbgPrint("offset of LBR_Count=%d\n", (UINT_PTR)&x.LBR_Count - (UINT_PTR)&x);


		DbgPrint("Testing forEachCpu(...)\n");
		forEachCpu(TestDPC, NULL, NULL, NULL, NULL);

		DbgPrint("Testing forEachCpuAsync(...)\n");
		forEachCpuAsync(TestDPC, NULL, NULL, NULL, NULL);

		DbgPrint("Testing forEachCpuPassive(...)\n");
		forEachCpuPassive(TestPassive, 0);

		DbgPrint("LVT_Performance_Monitor=%x\n", (UINT_PTR)&y.LVT_Performance_Monitor - (UINT_PTR)&y);
	}
#endif

#ifdef DEBUG2
	DbgPrint("No exceptions test:");
	if (NoExceptions_Enter())
	{
		int o = 45678;
		int x = 0, r = 0;
		//r=NoExceptions_CopyMemory(&x, &o, sizeof(x));

		r = NoExceptions_CopyMemory(&x, (PVOID)0, sizeof(x));

		DbgPrint("o=%d x=%d r=%d", o, x, r);


		DbgPrint("Leaving NoExceptions mode");
		NoExceptions_Leave();
	}
#endif


	RtlInitUnicodeString(&temp, L"PsSuspendProcess");
	PsSuspendProcess = (PSSUSPENDPROCESS)MmGetSystemRoutineAddress(&temp);

	RtlInitUnicodeString(&temp, L"PsResumeProcess");
	PsResumeProcess = (PSSUSPENDPROCESS)MmGetSystemRoutineAddress(&temp);
	
	
    return STATUS_SUCCESS;
}


NTSTATUS DispatchCreate(IN PDEVICE_OBJECT DeviceObject,
                       IN PIRP Irp)
{
	// Check for SeDebugPrivilege. (So only processes with admin rights can use it)

	LUID sedebugprivUID;
	sedebugprivUID.LowPart=SE_DEBUG_PRIVILEGE;
	sedebugprivUID.HighPart=0;

	Irp->IoStatus.Status = STATUS_UNSUCCESSFUL;



	if (SeSinglePrivilegeCheck(sedebugprivUID, UserMode))
	{		
		Irp->IoStatus.Status = STATUS_SUCCESS;
#ifdef AMD64
#ifdef TOBESIGNED
		{
			NTSTATUS s=SecurityCheck();	
			Irp->IoStatus.Status = s; 		
		}
	//	DbgPrint("Returning %x (and %x)\n", Irp->IoStatus.Status, s);
#endif
#endif


	}
	else
	{
		DbgPrint("A process without SeDebugPrivilege tried to open the dbk driver\n");
		Irp->IoStatus.Status = STATUS_UNSUCCESSFUL;
	}

    Irp->IoStatus.Information=0;

    IoCompleteRequest(Irp, IO_NO_INCREMENT);
    return Irp->IoStatus.Status;
}


NTSTATUS DispatchClose(IN PDEVICE_OBJECT DeviceObject,
                       IN PIRP Irp)
{
    Irp->IoStatus.Status = STATUS_SUCCESS;
    Irp->IoStatus.Information=0;

    IoCompleteRequest(Irp, IO_NO_INCREMENT);
    return Irp->IoStatus.Status;
}





void UnloadDriver(PDRIVER_OBJECT DriverObject)
{
	cleanupDBVM();
	
	if (!debugger_stopDebugging())
	{
		DbgPrint("Can not unload the driver because of debugger\n");
		return; //
	}

	debugger_shutdown();

	ultimap_disable();
	DisableUltimap2();
	UnregisterUltimapPMI();

	clean_APIC_BASE();

	NoExceptions_Cleanup();
	
	if ((CreateProcessNotifyRoutineEnabled) || (ImageNotifyRoutineLoaded)) 
	{
		PVOID x;
		UNICODE_STRING temp;

		RtlInitUnicodeString(&temp, L"PsRemoveCreateThreadNotifyRoutine");
		PsRemoveCreateThreadNotifyRoutine2 = (PSRCTNR)MmGetSystemRoutineAddress(&temp);

		RtlInitUnicodeString(&temp, L"PsRemoveCreateThreadNotifyRoutine");
		PsRemoveLoadImageNotifyRoutine2 = (PSRLINR)MmGetSystemRoutineAddress(&temp);
		
		RtlInitUnicodeString(&temp, L"ObOpenObjectByName");
		x=MmGetSystemRoutineAddress(&temp);
		
		DbgPrint("ObOpenObjectByName=%p\n",x);
			

		if ((PsRemoveCreateThreadNotifyRoutine2) && (PsRemoveLoadImageNotifyRoutine2))
		{
			DbgPrint("Stopping processwatch\n");

			if (CreateProcessNotifyRoutineEnabled)
			{
				DbgPrint("Removing process watch");
#if (NTDDI_VERSION >= NTDDI_VISTASP1)
				PsSetCreateProcessNotifyRoutineEx(CreateProcessNotifyRoutineEx,TRUE);
#else
				PsSetCreateProcessNotifyRoutine(CreateProcessNotifyRoutine,TRUE);
#endif

				
				DbgPrint("Removing thread watch");
				PsRemoveCreateThreadNotifyRoutine2(CreateThreadNotifyRoutine);
			}

			if (ImageNotifyRoutineLoaded)
				PsRemoveLoadImageNotifyRoutine2(LoadImageNotifyRoutine);
		}
		else return;  //leave now!!!!!		
	}


	DbgPrint("Driver unloading\n");

    IoDeleteDevice(DriverObject->DeviceObject);

#ifdef CETC
#ifndef CETC_RELEASE
	UnloadCETC(); //not possible in the final build
#endif
#endif

#ifndef CETC_RELEASE
	DbgPrint("DeviceString=%S\n",uszDeviceString.Buffer);
	{
		NTSTATUS r = IoDeleteSymbolicLink(&uszDeviceString);
		DbgPrint("IoDeleteSymbolicLink: %x\n", r);
	}
	ExFreePool(BufDeviceString);
#endif

	CleanProcessList();

	ExDeleteResourceLite(&ProcesslistR);

	RtlZeroMemory(&ProcesslistR, sizeof(ProcesslistR));

#if (NTDDI_VERSION >= NTDDI_VISTA)
	if (DRMHandle)
	{
		DbgPrint("Unregistering DRM handle");
		ObUnRegisterCallbacks(DRMHandle);
		DRMHandle = NULL;
	}
#endif
}