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编程技术- 驱动开发：内核特征码扫描PE代码段

推荐 原创

周杰伦

文章分类 游戏逆向 游戏开发 编程技术 加壳脱壳 阅读数 : 480 阅读时长 : 9分钟

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。

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#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。

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/ / 署名
/ / 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[] = "\x48\x89\x6c\x24\x10" ;
     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。

 

图片描述

 

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。

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/ / 署名
/ / 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。

 

图片描述

 

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。

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/ / 署名
/ / 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[] = "\x48\x89\x5c\x24\x08" ;
             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。

 

图片描述

 

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。

 

图片描述



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