驱动开发：内核特征码扫描PE代码段

2022-11-18 10:16:34 浏览数 (2)

在笔者上一篇文章《驱动开发：内核特征码搜索函数封装》中为了定位特征的方便我们封装实现了一个可以传入数组实现的SearchSpecialCode定位函数，该定位函数其实还不能算的上简单，本章LyShark将对特征码定位进行简化，让定位变得更简单，并运用定位代码实现扫描内核PE的.text代码段，并从代码段中得到某个特征所在内存位置。

老样子为了后续教程能够继续，先来定义一个lyshark.h头文件，该头文件中包含了我们本篇文章所必须要使用到的结构体定义，这些定义的函数如果不懂请去看LyShark以前的文章，这里就不罗嗦了。

代码语言：c复制
#include <ntifs.h>
#include <ntimage.h>

typedef struct _KLDR_DATA_TABLE_ENTRY
{
	LIST_ENTRY64 InLoadOrderLinks;
	ULONG64 __Undefined1;
	ULONG64 __Undefined2;
	ULONG64 __Undefined3;
	ULONG64 NonPagedDebugInfo;
	ULONG64 DllBase;
	ULONG64 EntryPoint;
	ULONG SizeOfImage;
	UNICODE_STRING FullDllName;
	UNICODE_STRING BaseDllName;
	ULONG   Flags;
	USHORT  LoadCount;
	USHORT  __Undefined5;
	ULONG64 __Undefined6;
	ULONG   CheckSum;
	ULONG   __padding1;
	ULONG   TimeDateStamp;
	ULONG   __padding2;
}KLDR_DATA_TABLE_ENTRY, *PKLDR_DATA_TABLE_ENTRY;

typedef struct _RTL_PROCESS_MODULE_INFORMATION
{
	HANDLE Section;
	PVOID MappedBase;
	PVOID ImageBase;
	ULONG ImageSize;
	ULONG Flags;
	USHORT LoadOrderIndex;
	USHORT InitOrderIndex;
	USHORT LoadCount;
	USHORT OffsetToFileName;
	UCHAR  FullPathName[256];
} RTL_PROCESS_MODULE_INFORMATION, *PRTL_PROCESS_MODULE_INFORMATION;

typedef struct _RTL_PROCESS_MODULES
{
	ULONG NumberOfModules;
	RTL_PROCESS_MODULE_INFORMATION Modules[1];
} RTL_PROCESS_MODULES, *PRTL_PROCESS_MODULES;

typedef enum _SYSTEM_INFORMATION_CLASS
{
	SystemBasicInformation = 0x0,
	SystemProcessorInformation = 0x1,
	SystemPerformanceInformation = 0x2,
	SystemTimeOfDayInformation = 0x3,
	SystemPathInformation = 0x4,
	SystemProcessInformation = 0x5,
	SystemCallCountInformation = 0x6,
	SystemDeviceInformation = 0x7,
	SystemProcessorPerformanceInformation = 0x8,
	SystemFlagsInformation = 0x9,
	SystemCallTimeInformation = 0xa,
	SystemModuleInformation = 0xb,
	SystemLocksInformation = 0xc,
	SystemStackTraceInformation = 0xd,
	SystemPagedPoolInformation = 0xe,
	SystemNonPagedPoolInformation = 0xf,
	SystemHandleInformation = 0x10,
	SystemObjectInformation = 0x11,
	SystemPageFileInformation = 0x12,
	SystemVdmInstemulInformation = 0x13,
	SystemVdmBopInformation = 0x14,
	SystemFileCacheInformation = 0x15,
	SystemPoolTagInformation = 0x16,
	SystemInterruptInformation = 0x17,
	SystemDpcBehaviorInformation = 0x18,
	SystemFullMemoryInformation = 0x19,
	SystemLoadGdiDriverInformation = 0x1a,
	SystemUnloadGdiDriverInformation = 0x1b,
	SystemTimeAdjustmentInformation = 0x1c,
	SystemSummaryMemoryInformation = 0x1d,
	SystemMirrorMemoryInformation = 0x1e,
	SystemPerformanceTraceInformation = 0x1f,
	SystemObsolete0 = 0x20,
	SystemExceptionInformation = 0x21,
	SystemCrashDumpStateInformation = 0x22,
	SystemKernelDebuggerInformation = 0x23,
	SystemContextSwitchInformation = 0x24,
	SystemRegistryQuotaInformation = 0x25,
	SystemExtendServiceTableInformation = 0x26,
	SystemPrioritySeperation = 0x27,
	SystemVerifierAddDriverInformation = 0x28,
	SystemVerifierRemoveDriverInformation = 0x29,
	SystemProcessorIdleInformation = 0x2a,
	SystemLegacyDriverInformation = 0x2b,
	SystemCurrentTimeZoneInformation = 0x2c,
	SystemLookasideInformation = 0x2d,
	SystemTimeSlipNotification = 0x2e,
	SystemSessionCreate = 0x2f,
	SystemSessionDetach = 0x30,
	SystemSessionInformation = 0x31,
	SystemRangeStartInformation = 0x32,
	SystemVerifierInformation = 0x33,
	SystemVerifierThunkExtend = 0x34,
	SystemSessionProcessInformation = 0x35,
	SystemLoadGdiDriverInSystemSpace = 0x36,
	SystemNumaProcessorMap = 0x37,
	SystemPrefetcherInformation = 0x38,
	SystemExtendedProcessInformation = 0x39,
	SystemRecommendedSharedDataAlignment = 0x3a,
	SystemComPlusPackage = 0x3b,
	SystemNumaAvailableMemory = 0x3c,
	SystemProcessorPowerInformation = 0x3d,
	SystemEmulationBasicInformation = 0x3e,
	SystemEmulationProcessorInformation = 0x3f,
	SystemExtendedHandleInformation = 0x40,
	SystemLostDelayedWriteInformation = 0x41,
	SystemBigPoolInformation = 0x42,
	SystemSessionPoolTagInformation = 0x43,
	SystemSessionMappedViewInformation = 0x44,
	SystemHotpatchInformation = 0x45,
	SystemObjectSecurityMode = 0x46,
	SystemWatchdogTimerHandler = 0x47,
	SystemWatchdogTimerInformation = 0x48,
	SystemLogicalProcessorInformation = 0x49,
	SystemWow64SharedInformationObsolete = 0x4a,
	SystemRegisterFirmwareTableInformationHandler = 0x4b,
	SystemFirmwareTableInformation = 0x4c,
	SystemModuleInformationEx = 0x4d,
	SystemVerifierTriageInformation = 0x4e,
	SystemSuperfetchInformation = 0x4f,
	SystemMemoryListInformation = 0x50,
	SystemFileCacheInformationEx = 0x51,
	SystemThreadPriorityClientIdInformation = 0x52,
	SystemProcessorIdleCycleTimeInformation = 0x53,
	SystemVerifierCancellationInformation = 0x54,
	SystemProcessorPowerInformationEx = 0x55,
	SystemRefTraceInformation = 0x56,
	SystemSpecialPoolInformation = 0x57,
	SystemProcessIdInformation = 0x58,
	SystemErrorPortInformation = 0x59,
	SystemBootEnvironmentInformation = 0x5a,
	SystemHypervisorInformation = 0x5b,
	SystemVerifierInformationEx = 0x5c,
	SystemTimeZoneInformation = 0x5d,
	SystemImageFileExecutionOptionsInformation = 0x5e,
	SystemCoverageInformation = 0x5f,
	SystemPrefetchPatchInformation = 0x60,
	SystemVerifierFaultsInformation = 0x61,
	SystemSystemPartitionInformation = 0x62,
	SystemSystemDiskInformation = 0x63,
	SystemProcessorPerformanceDistribution = 0x64,
	SystemNumaProximityNodeInformation = 0x65,
	SystemDynamicTimeZoneInformation = 0x66,
	SystemCodeIntegrityInformation = 0x67,
	SystemProcessorMicrocodeUpdateInformation = 0x68,
	SystemProcessorBrandString = 0x69,
	SystemVirtualAddressInformation = 0x6a,
	SystemLogicalProcessorAndGroupInformation = 0x6b,
	SystemProcessorCycleTimeInformation = 0x6c,
	SystemStoreInformation = 0x6d,
	SystemRegistryAppendString = 0x6e,
	SystemAitSamplingValue = 0x6f,
	SystemVhdBootInformation = 0x70,
	SystemCpuQuotaInformation = 0x71,
	SystemNativeBasicInformation = 0x72,
	SystemErrorPortTimeouts = 0x73,
	SystemLowPriorityIoInformation = 0x74,
	SystemBootEntropyInformation = 0x75,
	SystemVerifierCountersInformation = 0x76,
	SystemPagedPoolInformationEx = 0x77,
	SystemSystemPtesInformationEx = 0x78,
	SystemNodeDistanceInformation = 0x79,
	SystemAcpiAuditInformation = 0x7a,
	SystemBasicPerformanceInformation = 0x7b,
	SystemQueryPerformanceCounterInformation = 0x7c,
	SystemSessionBigPoolInformation = 0x7d,
	SystemBootGraphicsInformation = 0x7e,
	SystemScrubPhysicalMemoryInformation = 0x7f,
	SystemBadPageInformation = 0x80,
	SystemProcessorProfileControlArea = 0x81,
	SystemCombinePhysicalMemoryInformation = 0x82,
	SystemEntropyInterruptTimingInformation = 0x83,
	SystemConsoleInformation = 0x84,
	SystemPlatformBinaryInformation = 0x85,
	SystemThrottleNotificationInformation = 0x86,
	SystemHypervisorProcessorCountInformation = 0x87,
	SystemDeviceDataInformation = 0x88,
	SystemDeviceDataEnumerationInformation = 0x89,
	SystemMemoryTopologyInformation = 0x8a,
	SystemMemoryChannelInformation = 0x8b,
	SystemBootLogoInformation = 0x8c,
	SystemProcessorPerformanceInformationEx = 0x8d,
	SystemSpare0 = 0x8e,
	SystemSecureBootPolicyInformation = 0x8f,
	SystemPageFileInformationEx = 0x90,
	SystemSecureBootInformation = 0x91,
	SystemEntropyInterruptTimingRawInformation = 0x92,
	SystemPortableWorkspaceEfiLauncherInformation = 0x93,
	SystemFullProcessInformation = 0x94,
	SystemKernelDebuggerInformationEx = 0x95,
	SystemBootMetadataInformation = 0x96,
	SystemSoftRebootInformation = 0x97,
	SystemElamCertificateInformation = 0x98,
	SystemOfflineDumpConfigInformation = 0x99,
	SystemProcessorFeaturesInformation = 0x9a,
	SystemRegistryReconciliationInformation = 0x9b,
	MaxSystemInfoClass = 0x9c,
} SYSTEM_INFORMATION_CLASS;

// 声明函数
// By: Lyshark.com
NTSYSAPI PIMAGE_NT_HEADERS NTAPI RtlImageNtHeader(_In_ PVOID Base);
NTSTATUS NTAPI ZwQuerySystemInformation(SYSTEM_INFORMATION_CLASS SystemInformationClass, PVOID SystemInformation, ULONG SystemInformationLength, PULONG ReturnLength);

typedef VOID(__cdecl *PMiProcessLoaderEntry)(PKLDR_DATA_TABLE_ENTRY section, IN LOGICAL Insert);
typedef NTSTATUS(*NTQUERYSYSTEMINFORMATION)(IN ULONG SystemInformationClass, OUT PVOID SystemInformation, IN ULONG_PTR SystemInformationLength, OUT PULONG_PTR ReturnLength OPTIONAL);

我们继续，首先实现特征码字符串的解析与扫描实现此处UtilLySharkSearchPattern函数就是LyShark封装过的，这里依次介绍一下参数传递的含义。

  • pattern 用于传入一段字符串特征值(以x开头)
  • len 代表输入特征码长度(除去x后的长度)
  • base 代表扫描内存的基地址
  • size 代表需要向下扫描的长度
  • ppFound 代表扫描到首地址以后返回的内存地址

这段代码该如何使用，如下我们以定位IoInitializeTimer为例，演示UtilLySharkSearchPattern如何定位特征的，如下代码pattern变量中就是我们需要定位的特征值，pattern_size则是需要定位的特征码长度，在address地址位置向下扫描128字节，找到则返回到find_address变量内。

代码语言：c复制
// 署名权
// right to sign one's name on a piece of work
// PowerBy: LyShark
// Email: me@lyshark.com
#include "lyshark.h"

PVOID GetIoInitializeTimerAddress()
{
	PVOID VariableAddress = 0;
	UNICODE_STRING uioiTime = { 0 };

	RtlInitUnicodeString(&uioiTime, L"IoInitializeTimer");
	VariableAddress = (PVOID)MmGetSystemRoutineAddress(&uioiTime);
	if (VariableAddress != 0)
	{
		return VariableAddress;
	}
	return 0;
}

// 对指定内存执行特征码扫描
NTSTATUS UtilLySharkSearchPattern(IN PUCHAR pattern, IN ULONG_PTR len, IN const VOID* base, IN ULONG_PTR size, OUT PVOID* ppFound)
{
	// 计算匹配长度
	// LyShark.com 特征码扫描
	NT_ASSERT(ppFound != 0 && pattern != 0 && base != 0);
	if (ppFound == 0 || pattern == 0 || base == 0)
	{
		return STATUS_INVALID_PARAMETER;
	}

	__try
	{
		for (ULONG_PTR i = 0; i < size - len; i  )
		{
			BOOLEAN found = TRUE;
			for (ULONG_PTR j = 0; j < len; j  )
			{
				if (pattern[j] != ((PUCHAR)base)[i   j])
				{
					found = FALSE;
					break;
				}
			}

			if (found != FALSE)
			{
				*ppFound = (PUCHAR)base   i;
				DbgPrint("[LyShark.com] 特征码匹配地址: %p n", (PUCHAR)base   i);
				return STATUS_SUCCESS;
			}
		}
	}
	__except (EXCEPTION_EXECUTE_HANDLER)
	{
		return STATUS_UNHANDLED_EXCEPTION;
	}

	return STATUS_NOT_FOUND;
}

VOID UnDriver(PDRIVER_OBJECT driver)
{
	DbgPrint(("Uninstall Driver Is OK n"));
}

NTSTATUS DriverEntry(IN PDRIVER_OBJECT Driver, PUNICODE_STRING RegistryPath)
{
	DbgPrint(("hello lyshark.com n"));

	// 返回匹配长度5
	CHAR pattern[] = "x48x89x6cx24x10";
	PVOID *find_address = NULL;

	int pattern_size = sizeof(pattern) - 1;
	DbgPrint("匹配长度: %d n", pattern_size);

	// 得到基地址
	PVOID address = GetIoInitializeTimerAddress();

	// 扫描特征
	NTSTATUS nt = UtilLySharkSearchPattern((PUCHAR)pattern, pattern_size, address, 128, &find_address);

	DbgPrint("[LyShark 返回地址 => ] 0x%p n", (ULONG64)find_address);

	Driver->DriverUnload = UnDriver;
	return STATUS_SUCCESS;
}

运行驱动程序完成特征定位，并对比定位效果。

image.pngimage.png

如上述所示定位函数我们已经封装好了，相信你也能感受到这种方式要比使用数组更方便，为了能定位到内核PE结构我们需要使用RtlImageNtHeader来解析，这个内核函数专门用来得到内核程序的PE头部结构的，在下方案例中首先我们使用封装过的LySharkToolsUtilKernelBase函数拿到内核基址，如果你不懂函数实现细节请阅读《驱动开发：内核取ntoskrnl模块基地址》这篇文章，拿到基址以后可以直接使用RtlImageNtHeader对其PE头部进行解析，如下所示。

代码语言：c复制
// 署名权
// right to sign one's name on a piece of work
// PowerBy: LyShark
// Email: me@lyshark.com
#include "lyshark.h"

// 定义全局变量
static PVOID g_KernelBase = 0;
static ULONG g_KernelSize = 0;

// 得到KernelBase基地址
// lyshark.com
PVOID LySharkToolsUtilKernelBase(OUT PULONG pSize)
{
	NTSTATUS status = STATUS_SUCCESS;
	ULONG bytes = 0;
	PRTL_PROCESS_MODULES pMods = 0;
	PVOID checkPtr = 0;
	UNICODE_STRING routineName;

	if (g_KernelBase != 0)
	{
		if (pSize)
		{
			*pSize = g_KernelSize;
		}
		return g_KernelBase;
	}

	RtlInitUnicodeString(&routineName, L"NtOpenFile");

	checkPtr = MmGetSystemRoutineAddress(&routineName);
	if (checkPtr == 0)
		return 0;

	__try
	{
		status = ZwQuerySystemInformation(SystemModuleInformation, 0, bytes, &bytes);
		if (bytes == 0)
		{
			return 0;
		}

		pMods = (PRTL_PROCESS_MODULES)ExAllocatePoolWithTag(NonPagedPoolNx, bytes, L"LyShark");
		RtlZeroMemory(pMods, bytes);

		status = ZwQuerySystemInformation(SystemModuleInformation, pMods, bytes, &bytes);

		if (NT_SUCCESS(status))
		{
			PRTL_PROCESS_MODULE_INFORMATION pMod = pMods->Modules;

			for (ULONG i = 0; i < pMods->NumberOfModules; i  )
			{
				if (checkPtr >= pMod[i].ImageBase && checkPtr < (PVOID)((PUCHAR)pMod[i].ImageBase   pMod[i].ImageSize))
				{
					g_KernelBase = pMod[i].ImageBase;
					g_KernelSize = pMod[i].ImageSize;
					if (pSize)
					{
						*pSize = g_KernelSize;
					}
					break;
				}
			}
		}
	}
	__except (EXCEPTION_EXECUTE_HANDLER)
	{
		return 0;
	}

	if (pMods)
	{
		ExFreePoolWithTag(pMods, L"LyShark");
	}

	DbgPrint("KernelBase = > %p n", g_KernelBase);
	return g_KernelBase;
}

VOID UnDriver(PDRIVER_OBJECT driver)
{
	DbgPrint(("Uninstall Driver Is OK n"));
}

NTSTATUS DriverEntry(IN PDRIVER_OBJECT Driver, PUNICODE_STRING RegistryPath)
{
	DbgPrint(("hello lyshark.com n"));

	// 获取内核第一个模块的基地址
	PVOID base = LySharkToolsUtilKernelBase(0);
	if (!base)
		return STATUS_NOT_FOUND;

	// 得到NT头部PE32 结构
	// lyshark.com
	PIMAGE_NT_HEADERS64 pHdr = RtlImageNtHeader(base);
	if (!pHdr)
		return STATUS_INVALID_IMAGE_FORMAT;

	// 首先寻找代码段
	PIMAGE_SECTION_HEADER pFirstSection = (PIMAGE_SECTION_HEADER)(pHdr   1);
	for (PIMAGE_SECTION_HEADER pSection = pFirstSection; pSection < pFirstSection   pHdr->FileHeader.NumberOfSections; pSection  )
	{
		ANSI_STRING LySharkSection, LySharkName;
		RtlInitAnsiString(&LySharkSection, ".text");
		RtlInitAnsiString(&LySharkName, (PCCHAR)pSection->Name);

		DbgPrint("[LyShark.PE] 名字: %Z | 地址: %p | 长度: %d n", LySharkName, (PUCHAR)base   pSection->VirtualAddress, pSection->Misc.VirtualSize);
	}

	Driver->DriverUnload = UnDriver;
	return STATUS_SUCCESS;
}

运行这段驱动程序，你会得到当前内核的所有PE节信息，枚举效果如下所示。

image.pngimage.png

既然能够得到PE头部数据了，那么我们只需要扫描这段空间并得到匹配到的数据即可，其实很容易实现，如下代码所示。

代码语言：c复制
// 署名权
// right to sign one's name on a piece of work
// PowerBy: LyShark
// Email: me@lyshark.com
#include "lyshark.h"

// 定义全局变量
static PVOID g_KernelBase = 0;
static ULONG g_KernelSize = 0;

// 得到KernelBase基地址
// lyshark.com
PVOID LySharkToolsUtilKernelBase(OUT PULONG pSize)
{
	NTSTATUS status = STATUS_SUCCESS;
	ULONG bytes = 0;
	PRTL_PROCESS_MODULES pMods = 0;
	PVOID checkPtr = 0;
	UNICODE_STRING routineName;

	if (g_KernelBase != 0)
	{
		if (pSize)
		{
			*pSize = g_KernelSize;
		}
		return g_KernelBase;
	}

	RtlInitUnicodeString(&routineName, L"NtOpenFile");

	checkPtr = MmGetSystemRoutineAddress(&routineName);
	if (checkPtr == 0)
		return 0;

	__try
	{
		status = ZwQuerySystemInformation(SystemModuleInformation, 0, bytes, &bytes);
		if (bytes == 0)
		{
			return 0;
		}

		pMods = (PRTL_PROCESS_MODULES)ExAllocatePoolWithTag(NonPagedPoolNx, bytes, L"LyShark");
		RtlZeroMemory(pMods, bytes);

		status = ZwQuerySystemInformation(SystemModuleInformation, pMods, bytes, &bytes);

		if (NT_SUCCESS(status))
		{
			PRTL_PROCESS_MODULE_INFORMATION pMod = pMods->Modules;

			for (ULONG i = 0; i < pMods->NumberOfModules; i  )
			{
				if (checkPtr >= pMod[i].ImageBase && checkPtr < (PVOID)((PUCHAR)pMod[i].ImageBase   pMod[i].ImageSize))
				{
					g_KernelBase = pMod[i].ImageBase;
					g_KernelSize = pMod[i].ImageSize;
					if (pSize)
					{
						*pSize = g_KernelSize;
					}
					break;
				}
			}
		}
	}
	__except (EXCEPTION_EXECUTE_HANDLER)
	{
		return 0;
	}

	if (pMods)
	{
		ExFreePoolWithTag(pMods, L"LyShark");
	}

	DbgPrint("KernelBase = > %p n", g_KernelBase);
	return g_KernelBase;
}

// 对指定内存执行特征码扫描
NTSTATUS UtilLySharkSearchPattern(IN PUCHAR pattern, IN UCHAR wildcard, IN ULONG_PTR len, IN const VOID* base, IN ULONG_PTR size, OUT PVOID* ppFound)
{
	NT_ASSERT(ppFound != 0 && pattern != 0 && base != 0);
	if (ppFound == 0 || pattern == 0 || base == 0)
	{
		return STATUS_INVALID_PARAMETER;
	}

	__try
	{
		for (ULONG_PTR i = 0; i < size - len; i  )
		{
			BOOLEAN found = TRUE;
			for (ULONG_PTR j = 0; j < len; j  )
			{
				if (pattern[j] != wildcard && pattern[j] != ((PUCHAR)base)[i   j])
				{
					found = FALSE;
					break;
				}
			}

			if (found != FALSE)
			{
				*ppFound = (PUCHAR)base   i;
				DbgPrint("[LyShark] 特征码匹配地址: %p n", (PUCHAR)base   i);
				return STATUS_SUCCESS;
			}
		}
	}
	__except (EXCEPTION_EXECUTE_HANDLER)
	{
		return STATUS_UNHANDLED_EXCEPTION;
	}

	return STATUS_NOT_FOUND;
}

// 扫描代码段中的指令片段
NTSTATUS ByLySharkComUtilScanSection(IN PCCHAR section, IN PUCHAR pattern, IN UCHAR wildcard, IN ULONG_PTR len, OUT PVOID* ppFound)
{
	NT_ASSERT(ppFound != 0);
	if (ppFound == 0)
		return STATUS_INVALID_PARAMETER;

	// 获取内核第一个模块的基地址
	PVOID base = LySharkToolsUtilKernelBase(0);
	if (!base)
		return STATUS_NOT_FOUND;

	// 得到NT头部PE32 结构
	PIMAGE_NT_HEADERS64 pHdr = RtlImageNtHeader(base);
	if (!pHdr)
		return STATUS_INVALID_IMAGE_FORMAT;

	// 首先寻找代码段
	PIMAGE_SECTION_HEADER pFirstSection = (PIMAGE_SECTION_HEADER)(pHdr   1);
	for (PIMAGE_SECTION_HEADER pSection = pFirstSection; pSection < pFirstSection   pHdr->FileHeader.NumberOfSections; pSection  )
	{
		ANSI_STRING LySharkSection, LySharkText;
		RtlInitAnsiString(&LySharkSection, section);
		RtlInitAnsiString(&LySharkText, (PCCHAR)pSection->Name);

		// 判断是不是我们要找的.text节
		if (RtlCompareString(&LySharkSection, &LySharkText, TRUE) == 0)
		{
			// 如果是则开始匹配特征码
			return UtilLySharkSearchPattern(pattern, wildcard, len, (PUCHAR)base   pSection->VirtualAddress, pSection->Misc.VirtualSize, ppFound);
		}
	}

	return STATUS_NOT_FOUND;
}

VOID UnDriver(PDRIVER_OBJECT driver)
{
	DbgPrint(("Uninstall Driver Is OK n"));
}

NTSTATUS DriverEntry(IN PDRIVER_OBJECT Driver, PUNICODE_STRING RegistryPath)
{
	DbgPrint("hello lyshark.com n");

	PMiProcessLoaderEntry m_MiProcessLoaderEntry = NULL;
	RTL_OSVERSIONINFOW Version = { 0 };

	Version.dwOSVersionInfoSize = sizeof(Version);
	RtlGetVersion(&Version);

	//获取内核版本号
	DbgPrint("主版本: %d -->次版本: %d --> 编译版本: %d", Version.dwMajorVersion, Version.dwMinorVersion, Version.dwBuildNumber);

	if (Version.dwMajorVersion == 10)
	{
		// 如果是 win10 18363 则匹配特征
		if (Version.dwBuildNumber == 18363)
		{
			CHAR pattern[] = "x48x89x5cx24x08";
			int pattern_size = sizeof(pattern) - 1;

			ByLySharkComUtilScanSection(".text", (PUCHAR)pattern, 0xCC, pattern_size, (PVOID *)&m_MiProcessLoaderEntry);
			DbgPrint("[LyShark] 输出首地址: %p", m_MiProcessLoaderEntry);
		}
	}

	Driver->DriverUnload = UnDriver;
	return STATUS_SUCCESS;
}

代码中首先判断系统主版本windows 10 18363如果是则执行匹配，只匹配.text也就是代码段中的数据，当遇到0xcc时则取消继续，否则继续执行枚举，程序输出效果如下所示。

image.pngimage.png

在WinDBG中输入命令!dh 0xfffff8007f600000解析出内核PE头数据，可以看到如下所示，对比无误。

image.pngimage.png
文件存储驱动开发 内核安全

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