驱动开发：内核远程线程实现DLL注入看点

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驱动开发：内核远程线程实现DLL注入看点

2023-06-25 18:59:39 来源：博客园

在笔者上一篇文章《内核RIP劫持实现DLL注入》介绍了通过劫持RIP指针控制程序执行流实现插入DLL的目的，本章将继续探索全新的注入方式，通过NtCreateThreadEx这个内核函数实现注入DLL的目的，需要注意的是该函数在微软系统中未被导出使用时需要首先得到该函数的入口地址，NtCreateThreadEx函数最终会调用ZwCreateThread，本章在寻找函数的方式上有所不同，前一章通过内存定位的方法得到所需地址，本章则是通过解析导出表实现。

内核导出表远程线程是一种实现DLL注入的常见技术之一。通过使用该技术，注入代码可以利用目标进程的导出表中已有的函数来加载DLL，并在远程线程中执行DLL代码，从而实现DLL注入。

【资料图】

具体而言，内核导出表远程线程实现DLL注入的过程包括以下步骤：

打开目标进程，获取其进程句柄。在目标进程的内存空间中分配一段可执行代码的内存空间，将注入代码写入其中。通过GetProcAddress函数获取目标进程中已有的一个导出函数的地址，如LoadLibraryA等函数。在目标进程中创建一个远程线程，将获取到的导出函数地址作为线程的入口点，并将DLL路径等参数传递给导出函数。远程线程在目标进程中运行，并调用导出函数。导出函数会将DLL加载到目标进程的内存中，并返回DLL的句柄。远程线程继续执行注入代码，利用DLL的句柄和GetProcAddress函数获取目标函数的地址，从而实现DLL注入。

需要注意的是，内核导出表远程线程作为一种内核级别的注入技术，可能会被安全软件或操作系统检测到，并对其进行防御。因此，在使用这种技术进行DLL注入时，需要谨慎使用，并采取必要的安全措施，以防止被检测和防御。

在内核模式中实现这一过程的具体方法可分为如下步骤；

1.通过GetKeServiceDescriptorTable64获取到SSDT表基址2.通过KeStackAttachProcess附加到远程进程内3.通过GetUserModuleAddress获取到Ntdll.dll模块内存基址4.通过GetModuleExportAddress获取到LdrLoadDll函数的内存地址5.调用GetNative32Code生成拉起特定DLL的ShellCode片段6.通过NtCreateThreadEx将ShellCode执行起来，并自动加载DLL7.通过KeUnstackDetachProcess取消附加远程进程，并做好最后的清理工作

首先需要定义一个标准头文件，并将其命名为lyshark.h其定义部分如下所示，此部分内容包含了微软官方结构定义，以及一些通用函数的规整，已做较为详细的分析和备注，由于前面课程中都有介绍，此处不再介绍具体原理，如果需要了解结构体内的含义，请去自行查阅微软官方文档。

// 署名权// right to sign one"s name on a piece of work// PowerBy: LyShark// Email: me@lyshark.com#include #include #include #define THREAD_CREATE_FLAGS_HIDE_FROM_DEBUGGER 0x00000004// -----------------------------------------------------------------------------------// 声明未导出函数// -----------------------------------------------------------------------------------NTKERNELAPI PPEB NTAPI PsGetProcessPeb(IN PEPROCESS Process);NTKERNELAPI UCHAR* PsGetProcessImageFileName(IN PEPROCESS Process);NTKERNELAPI PVOID NTAPI PsGetProcessWow64Process(IN PEPROCESS Process);NTKERNELAPI HANDLE PsGetProcessInheritedFromUniqueProcessId(IN PEPROCESS Process);NTSYSAPI NTSTATUS NTAPI ZwQueryInformationThread(IN HANDLE ThreadHandle, IN THREADINFOCLASS ThreadInformationClass, OUT PVOID ThreadInformation, IN ULONG ThreadInformationLength, OUT PULONG ReturnLength OPTIONAL);typedef NTSTATUS(NTAPI* LPFN_NTCREATETHREADEX)(OUT PHANDLE ThreadHandle, IN ACCESS_MASK DesiredAccess, IN PVOID ObjectAttributes, IN HANDLE ProcessHandle, IN PVOID StartAddress, IN PVOID Parameter, IN ULONG Flags, IN SIZE_T StackZeroBits, IN SIZE_T SizeOfStackCommit, IN SIZE_T SizeOfStackReserve, OUT PVOID ByteBuffer);// -----------------------------------------------------------------------------------// 结构体声明// -----------------------------------------------------------------------------------// SSDT表结构typedef struct _SYSTEM_SERVICE_TABLE{PVOID       ServiceTableBase;PVOID       ServiceCounterTableBase;ULONGLONG   NumberOfServices;PVOID       ParamTableBase;} SYSTEM_SERVICE_TABLE, *PSYSTEM_SERVICE_TABLE;PSYSTEM_SERVICE_TABLE KeServiceDescriptorTable;typedef struct _PEB_LDR_DATA32{ULONG Length;UCHAR Initialized;ULONG SsHandle;LIST_ENTRY32 InLoadOrderModuleList;LIST_ENTRY32 InMemoryOrderModuleList;LIST_ENTRY32 InInitializationOrderModuleList;} PEB_LDR_DATA32, *PPEB_LDR_DATA32;typedef struct _PEB_LDR_DATA{ULONG Length;UCHAR Initialized;PVOID SsHandle;LIST_ENTRY InLoadOrderModuleList;LIST_ENTRY InMemoryOrderModuleList;LIST_ENTRY InInitializationOrderModuleList;} PEB_LDR_DATA, *PPEB_LDR_DATA;// PEB32/PEB64typedef struct _PEB32{UCHAR InheritedAddressSpace;UCHAR ReadImageFileExecOptions;UCHAR BeingDebugged;UCHAR BitField;ULONG Mutant;ULONG ImageBaseAddress;ULONG Ldr;ULONG ProcessParameters;ULONG SubSystemData;ULONG ProcessHeap;ULONG FastPebLock;ULONG AtlThunkSListPtr;ULONG IFEOKey;ULONG CrossProcessFlags;ULONG UserSharedInfoPtr;ULONG SystemReserved;ULONG AtlThunkSListPtr32;ULONG ApiSetMap;} PEB32, *PPEB32;typedef struct _PEB{UCHAR InheritedAddressSpace;UCHAR ReadImageFileExecOptions;UCHAR BeingDebugged;UCHAR BitField;PVOID Mutant;PVOID ImageBaseAddress;PPEB_LDR_DATA Ldr;PVOID ProcessParameters;PVOID SubSystemData;PVOID ProcessHeap;PVOID FastPebLock;PVOID AtlThunkSListPtr;PVOID IFEOKey;PVOID CrossProcessFlags;PVOID KernelCallbackTable;ULONG SystemReserved;ULONG AtlThunkSListPtr32;PVOID ApiSetMap;} PEB, *PPEB;typedef struct _LDR_DATA_TABLE_ENTRY32{LIST_ENTRY32 InLoadOrderLinks;LIST_ENTRY32 InMemoryOrderLinks;LIST_ENTRY32 InInitializationOrderLinks;ULONG DllBase;ULONG EntryPoint;ULONG SizeOfImage;UNICODE_STRING32 FullDllName;UNICODE_STRING32 BaseDllName;ULONG Flags;USHORT LoadCount;USHORT TlsIndex;LIST_ENTRY32 HashLinks;ULONG TimeDateStamp;} LDR_DATA_TABLE_ENTRY32, *PLDR_DATA_TABLE_ENTRY32;typedef struct _LDR_DATA_TABLE_ENTRY{LIST_ENTRY InLoadOrderLinks;LIST_ENTRY InMemoryOrderLinks;LIST_ENTRY InInitializationOrderLinks;PVOID DllBase;PVOID EntryPoint;ULONG SizeOfImage;UNICODE_STRING FullDllName;UNICODE_STRING BaseDllName;ULONG Flags;USHORT LoadCount;USHORT TlsIndex;LIST_ENTRY HashLinks;ULONG TimeDateStamp;} LDR_DATA_TABLE_ENTRY, *PLDR_DATA_TABLE_ENTRY;typedef struct _THREAD_BASIC_INFORMATION{NTSTATUS ExitStatus;PVOID TebBaseAddress;CLIENT_ID ClientId;ULONG_PTR AffinityMask;LONG Priority;LONG BasePriority;} THREAD_BASIC_INFORMATION, *PTHREAD_BASIC_INFORMATION;typedef struct _NT_PROC_THREAD_ATTRIBUTE_ENTRY{ULONG Attribute;    // PROC_THREAD_ATTRIBUTE_XXXSIZE_T Size;ULONG_PTR Value;ULONG Unknown;} NT_PROC_THREAD_ATTRIBUTE_ENTRY, *NT_PPROC_THREAD_ATTRIBUTE_ENTRY;typedef struct _NT_PROC_THREAD_ATTRIBUTE_LIST{ULONG Length;NT_PROC_THREAD_ATTRIBUTE_ENTRY Entry[1];} NT_PROC_THREAD_ATTRIBUTE_LIST, *PNT_PROC_THREAD_ATTRIBUTE_LIST;// 注入ShellCode结构typedef struct _INJECT_BUFFER{UCHAR Code[0x200];union{UNICODE_STRING Path64;UNICODE_STRING32 Path32;};wchar_t Buffer[488];PVOID ModuleHandle;ULONG Complete;NTSTATUS Status;} INJECT_BUFFER, *PINJECT_BUFFER;// -----------------------------------------------------------------------------------// 一些开发中的通用函数封装，可任意拷贝使用// -----------------------------------------------------------------------------------// 传入函数名获取SSDT导出表RVA// 参数1：传入函数名称ULONG GetSSDTRVA(UCHAR *function_name){NTSTATUS Status;HANDLE FileHandle;IO_STATUS_BLOCK ioStatus;FILE_STANDARD_INFORMATION FileInformation;// 设置NTDLL路径UNICODE_STRING uniFileName;RtlInitUnicodeString(&uniFileName, L"\\SystemRoot\\system32\\ntoskrnl.exe");// 初始化打开文件的属性OBJECT_ATTRIBUTES objectAttributes;InitializeObjectAttributes(&objectAttributes, &uniFileName, OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE, NULL, NULL);// 打开文件Status = IoCreateFile(&FileHandle, FILE_READ_ATTRIBUTES | SYNCHRONIZE, &objectAttributes, &ioStatus, 0, FILE_READ_ATTRIBUTES, FILE_SHARE_READ, FILE_OPEN, FILE_SYNCHRONOUS_IO_NONALERT, NULL, 0, CreateFileTypeNone, NULL, IO_NO_PARAMETER_CHECKING);if (!NT_SUCCESS(Status)){return 0;}// 获取文件信息Status = ZwQueryInformationFile(FileHandle, &ioStatus, &FileInformation, sizeof(FILE_STANDARD_INFORMATION), FileStandardInformation);if (!NT_SUCCESS(Status)){ZwClose(FileHandle);return 0;}// 判断文件大小是否过大if (FileInformation.EndOfFile.HighPart != 0){ZwClose(FileHandle);return 0;}// 取文件大小ULONG uFileSize = FileInformation.EndOfFile.LowPart;// 分配内存PVOID pBuffer = ExAllocatePoolWithTag(PagedPool, uFileSize + 0x100, (ULONG)"PGu");if (pBuffer == NULL){ZwClose(FileHandle);return 0;}// 从头开始读取文件LARGE_INTEGER byteOffset;byteOffset.LowPart = 0;byteOffset.HighPart = 0;Status = ZwReadFile(FileHandle, NULL, NULL, NULL, &ioStatus, pBuffer, uFileSize, &byteOffset, NULL);if (!NT_SUCCESS(Status)){ZwClose(FileHandle);return 0;}// 取出导出表PIMAGE_DOS_HEADER pDosHeader;PIMAGE_NT_HEADERS pNtHeaders;PIMAGE_SECTION_HEADER pSectionHeader;ULONGLONG FileOffset;PIMAGE_EXPORT_DIRECTORY pExportDirectory;// DLL内存数据转成DOS头结构pDosHeader = (PIMAGE_DOS_HEADER)pBuffer;// 取出PE头结构pNtHeaders = (PIMAGE_NT_HEADERS)((ULONGLONG)pBuffer + pDosHeader->e_lfanew);// 判断PE头导出表表是否为空if (pNtHeaders->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress == 0){return 0;}// 取出导出表偏移FileOffset = pNtHeaders->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress;// 取出节头结构pSectionHeader = (PIMAGE_SECTION_HEADER)((ULONGLONG)pNtHeaders + sizeof(IMAGE_NT_HEADERS));PIMAGE_SECTION_HEADER pOldSectionHeader = pSectionHeader;// 遍历节结构进行地址运算for (UINT16 Index = 0; Index < pNtHeaders->FileHeader.NumberOfSections; Index++, pSectionHeader++){if (pSectionHeader->VirtualAddress <= FileOffset && FileOffset <= pSectionHeader->VirtualAddress + pSectionHeader->SizeOfRawData){FileOffset = FileOffset - pSectionHeader->VirtualAddress + pSectionHeader->PointerToRawData;}}// 导出表地址pExportDirectory = (PIMAGE_EXPORT_DIRECTORY)((ULONGLONG)pBuffer + FileOffset);// 取出导出表函数地址PULONG AddressOfFunctions;FileOffset = pExportDirectory->AddressOfFunctions;// 遍历节结构进行地址运算pSectionHeader = pOldSectionHeader;for (UINT16 Index = 0; Index < pNtHeaders->FileHeader.NumberOfSections; Index++, pSectionHeader++){if (pSectionHeader->VirtualAddress <= FileOffset && FileOffset <= pSectionHeader->VirtualAddress + pSectionHeader->SizeOfRawData){FileOffset = FileOffset - pSectionHeader->VirtualAddress + pSectionHeader->PointerToRawData;}}AddressOfFunctions = (PULONG)((ULONGLONG)pBuffer + FileOffset);// 取出导出表函数名字PUSHORT AddressOfNameOrdinals;FileOffset = pExportDirectory->AddressOfNameOrdinals;// 遍历节结构进行地址运算pSectionHeader = pOldSectionHeader;for (UINT16 Index = 0; Index < pNtHeaders->FileHeader.NumberOfSections; Index++, pSectionHeader++){if (pSectionHeader->VirtualAddress <= FileOffset && FileOffset <= pSectionHeader->VirtualAddress + pSectionHeader->SizeOfRawData){FileOffset = FileOffset - pSectionHeader->VirtualAddress + pSectionHeader->PointerToRawData;}}AddressOfNameOrdinals = (PUSHORT)((ULONGLONG)pBuffer + FileOffset);//取出导出表函数序号PULONG AddressOfNames;FileOffset = pExportDirectory->AddressOfNames;//遍历节结构进行地址运算pSectionHeader = pOldSectionHeader;// 循环所有节for (UINT16 Index = 0; Index < pNtHeaders->FileHeader.NumberOfSections; Index++, pSectionHeader++){// 寻找符合条件的节if (pSectionHeader->VirtualAddress <= FileOffset && FileOffset <= pSectionHeader->VirtualAddress + pSectionHeader->SizeOfRawData){// 得到文件偏移FileOffset = FileOffset - pSectionHeader->VirtualAddress + pSectionHeader->PointerToRawData;}}AddressOfNames = (PULONG)((ULONGLONG)pBuffer + FileOffset);//DbgPrint("\n AddressOfFunctions %llX AddressOfNameOrdinals %llX AddressOfNames %llX  \n", (ULONGLONG)AddressOfFunctions- (ULONGLONG)pBuffer, (ULONGLONG)AddressOfNameOrdinals- (ULONGLONG)pBuffer, (ULONGLONG)AddressOfNames- (ULONGLONG)pBuffer);//DbgPrint("\n AddressOfFunctions %llX AddressOfNameOrdinals %llX AddressOfNames %llX  \n", pExportDirectory->AddressOfFunctions, pExportDirectory->AddressOfNameOrdinals, pExportDirectory->AddressOfNames);// 开始分析导出表ULONG uOffset;LPSTR FunName;ULONG uAddressOfNames;ULONG TargetOff = 0;// 循环导出表for (ULONG uIndex = 0; uIndex < pExportDirectory->NumberOfNames; uIndex++, AddressOfNames++, AddressOfNameOrdinals++){uAddressOfNames = *AddressOfNames;pSectionHeader = pOldSectionHeader;for (UINT16 Index = 0; Index < pNtHeaders->FileHeader.NumberOfSections; Index++, pSectionHeader++){// 函数地址在某个范围内if (pSectionHeader->VirtualAddress <= uAddressOfNames && uAddressOfNames <= pSectionHeader->VirtualAddress + pSectionHeader->SizeOfRawData){uOffset = uAddressOfNames - pSectionHeader->VirtualAddress + pSectionHeader->PointerToRawData;}}// 得到函数名FunName = (LPSTR)((ULONGLONG)pBuffer + uOffset);// 判断是否符合要求if (!_stricmp((const char *)function_name, FunName)){// 返回函数地址TargetOff = (ULONG)AddressOfFunctions[*AddressOfNameOrdinals];DbgPrint("索引 [ %p ] 函数名 [ %s ] 相对RVA [ %p ] \n", *AddressOfNameOrdinals, FunName, TargetOff);}}ExFreePoolWithTag(pBuffer, (ULONG)"PGu");ZwClose(FileHandle);return TargetOff;}// 传入函数名 获取该函数所在模块下标ULONG GetIndexByName(UCHAR *function_name){NTSTATUS Status;HANDLE FileHandle;IO_STATUS_BLOCK ioStatus;FILE_STANDARD_INFORMATION FileInformation;// 设置NTDLL路径UNICODE_STRING uniFileName;RtlInitUnicodeString(&uniFileName, L"\\SystemRoot\\system32\\ntdll.dll");// 初始化打开文件的属性OBJECT_ATTRIBUTES objectAttributes;InitializeObjectAttributes(&objectAttributes, &uniFileName, OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE, NULL, NULL);// 打开文件Status = IoCreateFile(&FileHandle, FILE_READ_ATTRIBUTES | SYNCHRONIZE, &objectAttributes, &ioStatus, 0, FILE_READ_ATTRIBUTES, FILE_SHARE_READ, FILE_OPEN, FILE_SYNCHRONOUS_IO_NONALERT, NULL, 0, CreateFileTypeNone, NULL, IO_NO_PARAMETER_CHECKING);if (!NT_SUCCESS(Status)){return 0;}// 获取文件信息Status = ZwQueryInformationFile(FileHandle, &ioStatus, &FileInformation, sizeof(FILE_STANDARD_INFORMATION), FileStandardInformation);if (!NT_SUCCESS(Status)){ZwClose(FileHandle);return 0;}// 判断文件大小是否过大if (FileInformation.EndOfFile.HighPart != 0){ZwClose(FileHandle);return 0;}// 取文件大小ULONG uFileSize = FileInformation.EndOfFile.LowPart;// 分配内存PVOID pBuffer = ExAllocatePoolWithTag(PagedPool, uFileSize + 0x100, (ULONG)"Ntdl");if (pBuffer == NULL){ZwClose(FileHandle);return 0;}// 从头开始读取文件LARGE_INTEGER byteOffset;byteOffset.LowPart = 0;byteOffset.HighPart = 0;Status = ZwReadFile(FileHandle, NULL, NULL, NULL, &ioStatus, pBuffer, uFileSize, &byteOffset, NULL);if (!NT_SUCCESS(Status)){ZwClose(FileHandle);return 0;}// 取出导出表PIMAGE_DOS_HEADER pDosHeader;PIMAGE_NT_HEADERS pNtHeaders;PIMAGE_SECTION_HEADER pSectionHeader;ULONGLONG FileOffset;PIMAGE_EXPORT_DIRECTORY pExportDirectory;// DLL内存数据转成DOS头结构pDosHeader = (PIMAGE_DOS_HEADER)pBuffer;// 取出PE头结构pNtHeaders = (PIMAGE_NT_HEADERS)((ULONGLONG)pBuffer + pDosHeader->e_lfanew);// 判断PE头导出表表是否为空if (pNtHeaders->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress == 0){return 0;}// 取出导出表偏移FileOffset = pNtHeaders->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress;// 取出节头结构pSectionHeader = (PIMAGE_SECTION_HEADER)((ULONGLONG)pNtHeaders + sizeof(IMAGE_NT_HEADERS));PIMAGE_SECTION_HEADER pOldSectionHeader = pSectionHeader;// 遍历节结构进行地址运算for (UINT16 Index = 0; Index < pNtHeaders->FileHeader.NumberOfSections; Index++, pSectionHeader++){if (pSectionHeader->VirtualAddress <= FileOffset && FileOffset <= pSectionHeader->VirtualAddress + pSectionHeader->SizeOfRawData){FileOffset = FileOffset - pSectionHeader->VirtualAddress + pSectionHeader->PointerToRawData;}}// 导出表地址pExportDirectory = (PIMAGE_EXPORT_DIRECTORY)((ULONGLONG)pBuffer + FileOffset);// 取出导出表函数地址PULONG AddressOfFunctions;FileOffset = pExportDirectory->AddressOfFunctions;// 遍历节结构进行地址运算pSectionHeader = pOldSectionHeader;for (UINT16 Index = 0; Index < pNtHeaders->FileHeader.NumberOfSections; Index++, pSectionHeader++){if (pSectionHeader->VirtualAddress <= FileOffset && FileOffset <= pSectionHeader->VirtualAddress + pSectionHeader->SizeOfRawData){FileOffset = FileOffset - pSectionHeader->VirtualAddress + pSectionHeader->PointerToRawData;}}// 此处需要注意foa和rva转换过程AddressOfFunctions = (PULONG)((ULONGLONG)pBuffer + FileOffset);// 取出导出表函数名字PUSHORT AddressOfNameOrdinals;FileOffset = pExportDirectory->AddressOfNameOrdinals;// 遍历节结构进行地址运算pSectionHeader = pOldSectionHeader;for (UINT16 Index = 0; Index < pNtHeaders->FileHeader.NumberOfSections; Index++, pSectionHeader++){if (pSectionHeader->VirtualAddress <= FileOffset && FileOffset <= pSectionHeader->VirtualAddress + pSectionHeader->SizeOfRawData){FileOffset = FileOffset - pSectionHeader->VirtualAddress + pSectionHeader->PointerToRawData;}}// 此处需要注意foa和rva转换过程AddressOfNameOrdinals = (PUSHORT)((ULONGLONG)pBuffer + FileOffset);// 取出导出表函数序号PULONG AddressOfNames;FileOffset = pExportDirectory->AddressOfNames;// 遍历节结构进行地址运算pSectionHeader = pOldSectionHeader;for (UINT16 Index = 0; Index < pNtHeaders->FileHeader.NumberOfSections; Index++, pSectionHeader++){if (pSectionHeader->VirtualAddress <= FileOffset && FileOffset <= pSectionHeader->VirtualAddress + pSectionHeader->SizeOfRawData){FileOffset = FileOffset - pSectionHeader->VirtualAddress + pSectionHeader->PointerToRawData;}}// 此处需要注意foa和rva转换过程AddressOfNames = (PULONG)((ULONGLONG)pBuffer + FileOffset);// 分析导出表ULONG uNameOffset;ULONG uOffset;LPSTR FunName;PVOID pFuncAddr;ULONG uServerIndex;ULONG uAddressOfNames;for (ULONG uIndex = 0; uIndex < pExportDirectory->NumberOfNames; uIndex++, AddressOfNames++, AddressOfNameOrdinals++){uAddressOfNames = *AddressOfNames;pSectionHeader = pOldSectionHeader;for (UINT32 Index = 0; Index < pNtHeaders->FileHeader.NumberOfSections; Index++, pSectionHeader++){if (pSectionHeader->VirtualAddress <= uAddressOfNames && uAddressOfNames <= pSectionHeader->VirtualAddress + pSectionHeader->SizeOfRawData){uOffset = uAddressOfNames - pSectionHeader->VirtualAddress + pSectionHeader->PointerToRawData;}}FunName = (LPSTR)((ULONGLONG)pBuffer + uOffset);// 判断开头是否是Zwif (FunName[0] == "Z" && FunName[1] == "w"){pSectionHeader = pOldSectionHeader;// 如果是则根据AddressOfNameOrdinals得到文件偏移uOffset = (ULONG)AddressOfFunctions[*AddressOfNameOrdinals];for (UINT32 Index = 0; Index < pNtHeaders->FileHeader.NumberOfSections; Index++, pSectionHeader++){if (pSectionHeader->VirtualAddress <= uOffset && uOffset <= pSectionHeader->VirtualAddress + pSectionHeader->SizeOfRawData){uNameOffset = uOffset - pSectionHeader->VirtualAddress + pSectionHeader->PointerToRawData;}}pFuncAddr = (PVOID)((ULONGLONG)pBuffer + uNameOffset);uServerIndex = *(PULONG)((ULONGLONG)pFuncAddr + 4);FunName[0] = "N";FunName[1] = "t";// 获得指定的编号if (!_stricmp(FunName, (const char *)function_name)){ExFreePoolWithTag(pBuffer, (ULONG)"Ntdl");ZwClose(FileHandle);return uServerIndex;}}}ExFreePoolWithTag(pBuffer, (ULONG)"Ntdl");ZwClose(FileHandle);return 0;}// 获取模块导出函数PVOID GetModuleExportAddress(IN PVOID ModuleBase, IN PCCHAR FunctionName, IN PEPROCESS EProcess){PIMAGE_DOS_HEADER ImageDosHeader = (PIMAGE_DOS_HEADER)ModuleBase;PIMAGE_NT_HEADERS32 ImageNtHeaders32 = NULL;PIMAGE_NT_HEADERS64 ImageNtHeaders64 = NULL;PIMAGE_EXPORT_DIRECTORY ImageExportDirectory = NULL;ULONG ExportDirectorySize = 0;ULONG_PTR FunctionAddress = 0;if (ModuleBase == NULL){return NULL;}if (ImageDosHeader->e_magic != IMAGE_DOS_SIGNATURE){return NULL;}ImageNtHeaders32 = (PIMAGE_NT_HEADERS32)((PUCHAR)ModuleBase + ImageDosHeader->e_lfanew);ImageNtHeaders64 = (PIMAGE_NT_HEADERS64)((PUCHAR)ModuleBase + ImageDosHeader->e_lfanew);// 判断PE结构位数if (ImageNtHeaders64->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC){ImageExportDirectory = (PIMAGE_EXPORT_DIRECTORY)(ImageNtHeaders64->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress + (ULONG_PTR)ModuleBase);ExportDirectorySize = ImageNtHeaders64->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size;}else{ImageExportDirectory = (PIMAGE_EXPORT_DIRECTORY)(ImageNtHeaders32->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress + (ULONG_PTR)ModuleBase);ExportDirectorySize = ImageNtHeaders32->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size;}// 解析内存导出表PUSHORT pAddressOfOrds = (PUSHORT)(ImageExportDirectory->AddressOfNameOrdinals + (ULONG_PTR)ModuleBase);PULONG  pAddressOfNames = (PULONG)(ImageExportDirectory->AddressOfNames + (ULONG_PTR)ModuleBase);PULONG  pAddressOfFuncs = (PULONG)(ImageExportDirectory->AddressOfFunctions + (ULONG_PTR)ModuleBase);for (ULONG i = 0; i < ImageExportDirectory->NumberOfFunctions; ++i){USHORT OrdIndex = 0xFFFF;PCHAR  pName = NULL;// 如果函数名小于等于0xFFFF 则说明是序号导出if ((ULONG_PTR)FunctionName <= 0xFFFF){OrdIndex = (USHORT)i;}// 否则则说明是名字导出else if ((ULONG_PTR)FunctionName > 0xFFFF && i < ImageExportDirectory->NumberOfNames){pName = (PCHAR)(pAddressOfNames[i] + (ULONG_PTR)ModuleBase);OrdIndex = pAddressOfOrds[i];}// 未知导出函数else{return NULL;}// 对比模块名是否是我们所需要的if (((ULONG_PTR)FunctionName <= 0xFFFF && (USHORT)((ULONG_PTR)FunctionName) == OrdIndex + ImageExportDirectory->Base) || ((ULONG_PTR)FunctionName > 0xFFFF && strcmp(pName, FunctionName) == 0)){// 是则保存下来FunctionAddress = pAddressOfFuncs[OrdIndex] + (ULONG_PTR)ModuleBase;break;}}return (PVOID)FunctionAddress;}// 获取指定用户模块基址PVOID GetUserModuleAddress(IN PEPROCESS EProcess, IN PUNICODE_STRING ModuleName, IN BOOLEAN IsWow64){if (EProcess == NULL){return NULL;}__try{// 定时250ms毫秒LARGE_INTEGER Time = { 0 };Time.QuadPart = -250ll * 10 * 1000;// 32位执行if (IsWow64){// 得到进程PEB进程环境块PPEB32 Peb32 = (PPEB32)PsGetProcessWow64Process(EProcess);if (Peb32 == NULL){return NULL;}// 等待 250ms * 10for (INT i = 0; !Peb32->Ldr && i < 10; i++){// 等待一会在执行KeDelayExecutionThread(KernelMode, TRUE, &Time);}// 没有找到返回空if (!Peb32->Ldr){return NULL;}// 搜索 InLoadOrderModuleListfor (PLIST_ENTRY32 ListEntry = (PLIST_ENTRY32)((PPEB_LDR_DATA32)Peb32->Ldr)->InLoadOrderModuleList.Flink; ListEntry != &((PPEB_LDR_DATA32)Peb32->Ldr)->InLoadOrderModuleList; ListEntry = (PLIST_ENTRY32)ListEntry->Flink){UNICODE_STRING UnicodeString;PLDR_DATA_TABLE_ENTRY32 LdrDataTableEntry32 = CONTAINING_RECORD(ListEntry, LDR_DATA_TABLE_ENTRY32, InLoadOrderLinks);RtlUnicodeStringInit(&UnicodeString, (PWCH)LdrDataTableEntry32->BaseDllName.Buffer);// 判断模块名是否符合要求if (RtlCompareUnicodeString(&UnicodeString, ModuleName, TRUE) == 0){// 符合则返回模块基址return (PVOID)LdrDataTableEntry32->DllBase;}}}// 64位执行else{// 得到进程PEB进程环境块PPEB Peb = PsGetProcessPeb(EProcess);if (!Peb){return NULL;}// 等待for (INT i = 0; !Peb->Ldr && i < 10; i++){// 将当前线程置于指定间隔的可警报或不可操作的等待状态KeDelayExecutionThread(KernelMode, TRUE, &Time);}if (!Peb->Ldr){return NULL;}// 遍历链表for (PLIST_ENTRY ListEntry = Peb->Ldr->InLoadOrderModuleList.Flink; ListEntry != &Peb->Ldr->InLoadOrderModuleList; ListEntry = ListEntry->Flink){PLDR_DATA_TABLE_ENTRY LdrDataTableEntry = CONTAINING_RECORD(ListEntry, LDR_DATA_TABLE_ENTRY, InLoadOrderLinks);// 判断模块名是否符合要求if (RtlCompareUnicodeString(&LdrDataTableEntry->BaseDllName, ModuleName, TRUE) == 0){// 返回模块基址return LdrDataTableEntry->DllBase;}}}}__except (EXCEPTION_EXECUTE_HANDLER){return NULL;}return NULL;}//得到ntos的基址ULONGLONG GetOsBaseAddress(PDRIVER_OBJECT pDriverObject){UNICODE_STRING osName = { 0 };WCHAR wzData[0x100] = L"ntoskrnl.exe";RtlInitUnicodeString(&osName, wzData);LDR_DATA_TABLE_ENTRY *pDataTableEntry, *pTempDataTableEntry;// 双循环链表定义PLIST_ENTRY pList;// 指向驱动对象的DriverSectionpDataTableEntry = (LDR_DATA_TABLE_ENTRY*)pDriverObject->DriverSection;// 判断是否为空if (!pDataTableEntry){return 0;}// 得到链表地址pList = pDataTableEntry->InLoadOrderLinks.Flink;// 判断是否等于头部while (pList != &pDataTableEntry->InLoadOrderLinks){pTempDataTableEntry = (LDR_DATA_TABLE_ENTRY *)pList;// 如果是ntoskrnl.exe则返回该模块基址if (RtlEqualUnicodeString(&pTempDataTableEntry->BaseDllName, &osName, TRUE)){return (ULONGLONG)pTempDataTableEntry->DllBase;}pList = pList->Flink;}return 0;}// 得到SSDT表的基地址ULONGLONG GetKeServiceDescriptorTable64(PDRIVER_OBJECT DriverObject){/*nt!KiSystemServiceUser+0xdc:fffff806`42c79987 8bf8            mov     edi,eaxfffff806`42c79989 c1ef07          shr     edi,7fffff806`42c7998c 83e720          and     edi,20hfffff806`42c7998f 25ff0f0000      and     eax,0FFFhnt!KiSystemServiceRepeat:fffff806`42c79994 4c8d15e59e3b00  lea     r10,[nt!KeServiceDescriptorTable (fffff806`43033880)]fffff806`42c7999b 4c8d1dde203a00  lea     r11,[nt!KeServiceDescriptorTableShadow (fffff806`4301ba80)]fffff806`42c799a2 f7437880000000  test    dword ptr [rbx+78h],80hfffff806`42c799a9 7413            je      nt!KiSystemServiceRepeat+0x2a (fffff806`42c799be)*/char KiSystemServiceStart_pattern[14] = "\x8B\xF8\xC1\xEF\x07\x83\xE7\x20\x25\xFF\x0F\x00\x00";/*ULONG rva = GetRvaFromModule(L"\\SystemRoot\\system32\\ntoskrnl.exe", "_stricmp");DbgPrint("NtReadFile VA = %p \n", rva);ULONG _stricmp_offset = 0x19d710;*/ULONGLONG CodeScanStart = GetSSDTRVA((UCHAR *)"_stricmp") + GetOsBaseAddress(DriverObject);ULONGLONG i, tbl_address, b;for (i = 0; i < 0x50000; i++){// 比较特征if (!memcmp((char*)(ULONGLONG)CodeScanStart + i, (char*)KiSystemServiceStart_pattern, 13)){for (b = 0; b < 50; b++){tbl_address = ((ULONGLONG)CodeScanStart + i + b);// 4c 8d 15 e5 9e 3b 00  lea r10,[nt!KeServiceDescriptorTable (fffff802`64da4880)]// if (*(USHORT*)((ULONGLONG)tbl_address) == (USHORT)0x158d4c)if (*(USHORT*)((ULONGLONG)tbl_address) == (USHORT)0x8d4c){return ((LONGLONG)tbl_address + 7) + *(LONG*)(tbl_address + 3);}}}}return 0;}// 根据SSDT序号得到函数基址ULONGLONG GetSSDTFuncCurAddr(ULONG index){/*mov rax, rcx                   ; rcx=Native API 的 indexlea r10,[rdx]                  ; rdx=ssdt 基址mov edi,eax                    ; indexshr edi,7and edi,20hmov r10, qword ptr [r10+rdi]   ; ServiceTableBasemovsxd r11,dword ptr [r10+rax] ; 没有右移的假ssdt的地址mov rax,r11sar r11,4add r10,r11mov rax,r10ret*/LONG dwtmp = 0;PULONG ServiceTableBase = NULL;ServiceTableBase = (PULONG)KeServiceDescriptorTable->ServiceTableBase;dwtmp = ServiceTableBase[index];// 先右移4位之后加上基地址 就可以得到ssdt的地址dwtmp = dwtmp >> 4;return (LONGLONG)dwtmp + (ULONGLONG)ServiceTableBase;}// 根据进程ID返回进程EPROCESSPEPROCESS LookupProcess(HANDLE Pid){PEPROCESS eprocess = NULL;if (NT_SUCCESS(PsLookupProcessByProcessId(Pid, &eprocess))){return eprocess;}else{return NULL;}}// 根据用户传入进程名得到该进程PIDHANDLE GetProcessID(PCHAR ProcessName){ULONG i = 0;PEPROCESS eproc = NULL;for (i = 4; i<100000000; i = i + 4){eproc = LookupProcess((HANDLE)i);if (eproc != NULL){ObDereferenceObject(eproc);// 根据进程名得到进程EPEPROCESSif (strstr(PsGetProcessImageFileName(eproc), ProcessName) != NULL){return PsGetProcessId(eproc);}}}return NULL;}

为了能更好的完成驱动注入实现原理的讲解，也可以让用户理解如上方所封装的API函数的使用流程，接下来将依次讲解上方这些通用API函数的作用以及使用方法，其目的是让用户可以更好的学会功能运用，以此在后期项目开发中可以更好的使用这些功能。

GetOsBaseAddress:该函数可实现输出特定内核模块的基地址，本例中写死在了变量wzData中，如果需要改进只需要替换参数传递即可实现自定义取值，调用该函数你只需要传入PDRIVER_OBJECT自身驱动对象即可，代码如下所示；

// 署名权// right to sign one"s name on a piece of work// PowerBy: LyShark// Email: me@lyshark.com#include "lyshark.h"VOID Unload(PDRIVER_OBJECT pDriverObj){DbgPrint("[-] 驱动卸载 \n");}NTSTATUS DriverEntry(PDRIVER_OBJECT DriverObject, PUNICODE_STRING RegPath){DbgPrint("Hello LyShark.com \n");ULONGLONG kernel_base = GetOsBaseAddress(DriverObject);DbgPrint("ntoskrnl.exe 模块基址: %p \n", kernel_base);DriverObject->DriverUnload = Unload;return STATUS_SUCCESS;}

编译并运行如上代码片段，即可输出ntoskrnl.exe内核模块的基址，效果图如下所示；

GetSSDTFuncCurAddr:该函数可实现根据用户传入的SSDT表下标，获取到该函数的基址，代码如下所示；

// 署名权// right to sign one"s name on a piece of work// PowerBy: LyShark// Email: me@lyshark.com#include "lyshark.h"VOID Unload(PDRIVER_OBJECT pDriverObj){DbgPrint("[-] 驱动卸载 \n");}NTSTATUS DriverEntry(PDRIVER_OBJECT DriverObject, PUNICODE_STRING RegPath){DbgPrint("Hello LyShark.com \n");// 得到SSDT基地址KeServiceDescriptorTable = (PSYSTEM_SERVICE_TABLE)GetKeServiceDescriptorTable64(DriverObject);DbgPrint("SSDT基地址: %p \n", KeServiceDescriptorTable->ServiceTableBase);// 根据序号得到指定函数地址ULONGLONG address = NULL;address = GetSSDTFuncCurAddr(10);DbgPrint("得到函数地址: %p \n", address);address = GetSSDTFuncCurAddr(11);DbgPrint("得到函数地址: %p \n", address);address = GetSSDTFuncCurAddr(12);DbgPrint("得到函数地址: %p \n", address);DriverObject->DriverUnload = Unload;return STATUS_SUCCESS;}

编译并运行如上代码片段，即可输出下标为10，11，12的SSDT函数基址，效果图如下所示；

GetSSDTRVA:根据传入的函数名获取该函数的RVA地址，用户传入一个特定模块下导出函数的函数名，动态得到该函数的相对偏移地址。

// 署名权// right to sign one"s name on a piece of work// PowerBy: LyShark// Email: me@lyshark.com#include "lyshark.h"VOID Unload(PDRIVER_OBJECT pDriverObj){DbgPrint("[-] 驱动卸载 \n");}NTSTATUS DriverEntry(PDRIVER_OBJECT DriverObject, PUNICODE_STRING RegPath){DbgPrint("Hello LyShark.com \n");ULONG64 ReadFile_RVA = GetSSDTRVA("NtReadFile");DbgPrint("NtReadFile = %p \n", ReadFile_RVA);ULONG64 NtCreateEnlistment_RVA = GetSSDTRVA("NtCreateEnlistment");DbgPrint("NtCreateEnlistment = %p \n", NtCreateEnlistment_RVA);DriverObject->DriverUnload = Unload;return STATUS_SUCCESS;}

编译并运行如上代码片段，即可输出NtReadFile,NtCreateEnlistment两个内核函数的RVA地址，效果图如下所示；

GetIndexByName:该函数接收用户传入的一个SSDT函数名，并返回该函数所对应的下标，调用代码如下；

// 署名权// right to sign one"s name on a piece of work// PowerBy: LyShark// Email: me@lyshark.com#include "lyshark.h"VOID Unload(PDRIVER_OBJECT pDriverObj){DbgPrint("[-] 驱动卸载 \n");}NTSTATUS DriverEntry(PDRIVER_OBJECT DriverObject, PUNICODE_STRING RegPath){DbgPrint("Hello LyShark.com \n");ULONG index1 = GetIndexByName((UCHAR *)"NtCreateThreadEx");DbgPrint("函数NtCreateThreadEx下标: %d \n", index1);ULONG index2 = GetIndexByName((UCHAR *)"NtReadFile");DbgPrint("函数NtReadFile下标: %d \n", index2);DriverObject->DriverUnload = Unload;return STATUS_SUCCESS;}

编译并运行如上代码片段，即可输出NtCreateThreadEx,NtReadFile两个内核函数的下标，效果图如下所示；

GetUserModuleAddress:该函数用于获取进程模块基址，在内核模式下附加到应用层指定进程上，并动态获取到该进程所加载的指定模块的基址，调用代码如下；

// 署名权// right to sign one"s name on a piece of work// PowerBy: LyShark// Email: me@lyshark.com#include "lyshark.h"VOID Unload(PDRIVER_OBJECT pDriverObj){DbgPrint("[-] 驱动卸载 \n");}NTSTATUS DriverEntry(PDRIVER_OBJECT DriverObject, PUNICODE_STRING RegPath){DbgPrint("Hello LyShark.com \n");HANDLE ProcessID = (HANDLE)6932;PEPROCESS EProcess = NULL;NTSTATUS Status = STATUS_SUCCESS;KAPC_STATE ApcState;// 根据PID得到进程EProcess结构Status = PsLookupProcessByProcessId(ProcessID, &EProcess);if (Status != STATUS_SUCCESS){DbgPrint("[-] 获取EProcessID失败 \n");return Status;}// 判断目标进程是32位还是64位BOOLEAN IsWow64 = (PsGetProcessWow64Process(EProcess) != NULL) ? TRUE : FALSE;// 验证地址是否可读if (!MmIsAddressValid(EProcess)){DbgPrint("[-] 地址不可读 \n");DriverObject->DriverUnload = Unload;return STATUS_SUCCESS;}// 将当前线程连接到目标进程的地址空间(附加进程)KeStackAttachProcess((PRKPROCESS)EProcess, &ApcState);__try{UNICODE_STRING NtdllUnicodeString = { 0 };PVOID NtdllAddress = NULL;// 得到进程内ntdll.dll模块基地址RtlInitUnicodeString(&NtdllUnicodeString, L"Ntdll.dll");NtdllAddress = GetUserModuleAddress(EProcess, &NtdllUnicodeString, IsWow64);if (!NtdllAddress){DbgPrint("[-] 没有找到基址 \n");DriverObject->DriverUnload = Unload;return STATUS_SUCCESS;}DbgPrint("[*] 模块ntdll.dll基址: %p \n", NtdllAddress);}__except (EXCEPTION_EXECUTE_HANDLER){}// 取消附加KeUnstackDetachProcess(&ApcState);DriverObject->DriverUnload = Unload;return STATUS_SUCCESS;}

编译并运行如上代码片段，则获取进程PID=6932里面的ntdll.dll模块的基址，输出效果图如下所示；

GetModuleExportAddress:该函数可用于获取特定模块中特定函数的基址，此功能需要配合获取模块基址一起使用，调用代码如下；

// 署名权// right to sign one"s name on a piece of work// PowerBy: LyShark// Email: me@lyshark.com#include "lyshark.h"VOID Unload(PDRIVER_OBJECT pDriverObj){DbgPrint("[-] 驱动卸载 \n");}NTSTATUS DriverEntry(PDRIVER_OBJECT DriverObject, PUNICODE_STRING RegPath){DbgPrint("Hello LyShark.com \n");HANDLE ProcessID = (HANDLE)6932;PEPROCESS EProcess = NULL;NTSTATUS Status = STATUS_SUCCESS;// 根据PID得到进程EProcess结构Status = PsLookupProcessByProcessId(ProcessID, &EProcess);if (Status != STATUS_SUCCESS){DbgPrint("[-] 获取EProcessID失败 \n");return Status;}PVOID BaseAddress = (PVOID)0x77540000;PVOID RefAddress = 0;// 传入Ntdll.dll基址 + 函数名 得到该函数地址RefAddress = GetModuleExportAddress(BaseAddress, "LdrLoadDll", EProcess);DbgPrint("[*] 函数地址: %p \n", RefAddress);DriverObject->DriverUnload = Unload;return STATUS_SUCCESS;}

编译并运行如上代码片段，则获取进程PID=6932里面的ntdll.dll模块里的LdrLoadDll函数基址，输出效果图如下所示；

SeCreateThreadEx:该函数则是实际执行注入的函数，此段代码中需要注意的是pPrevMode中的偏移值，每个系统中都不相同，用户需要自行在WinDBG中输入!_KTHREAD得到线程信息，并找到PreviousMode字段，该字段中的偏移值需要(PUCHAR)PsGetCurrentThread() + 0x232才可得到正确位置。

// 署名权// right to sign one"s name on a piece of work// PowerBy: LyShark// Email: me@lyshark.com#include "lyshark.h"// -----------------------------------------------------------------------------------// 注入代码生成函数// -----------------------------------------------------------------------------------// 创建64位注入代码PINJECT_BUFFER GetNative64Code(IN PVOID LdrLoadDll, IN PUNICODE_STRING DllFullPath){NTSTATUS Status = STATUS_SUCCESS;PINJECT_BUFFER InjectBuffer = NULL;SIZE_T Size = PAGE_SIZE;UCHAR Code[] = {0x48, 0x83, 0xEC, 0x28,                 // sub rsp, 0x280x48, 0x31, 0xC9,                       // xor rcx, rcx0x48, 0x31, 0xD2,                       // xor rdx, rdx0x49, 0xB8, 0, 0, 0, 0, 0, 0, 0, 0,     // mov r8, ModuleFileName   offset +120x49, 0xB9, 0, 0, 0, 0, 0, 0, 0, 0,     // mov r9, ModuleHandle     offset +280x48, 0xB8, 0, 0, 0, 0, 0, 0, 0, 0,     // mov rax, LdrLoadDll      offset +320xFF, 0xD0,                             // call rax0x48, 0xBA, 0, 0, 0, 0, 0, 0, 0, 0,     // mov rdx, COMPLETE_OFFSET offset +440xC7, 0x02, 0x7E, 0x1E, 0x37, 0xC0,     // mov [rdx], CALL_COMPLETE 0x48, 0xBA, 0, 0, 0, 0, 0, 0, 0, 0,     // mov rdx, STATUS_OFFSET   offset +600x89, 0x02,                             // mov [rdx], eax0x48, 0x83, 0xC4, 0x28,                 // add rsp, 0x280xC3                                    // ret};Status = ZwAllocateVirtualMemory(ZwCurrentProcess(), &InjectBuffer, 0, &Size, MEM_COMMIT, PAGE_EXECUTE_READWRITE);if (NT_SUCCESS(Status)){PUNICODE_STRING UserPath = &InjectBuffer->Path64;UserPath->Length = 0;UserPath->MaximumLength = sizeof(InjectBuffer->Buffer);UserPath->Buffer = InjectBuffer->Buffer;RtlUnicodeStringCopy(UserPath, DllFullPath);// Copy codememcpy(InjectBuffer, Code, sizeof(Code));// Fill stubs*(ULONGLONG*)((PUCHAR)InjectBuffer + 12) = (ULONGLONG)UserPath;*(ULONGLONG*)((PUCHAR)InjectBuffer + 22) = (ULONGLONG)&InjectBuffer->ModuleHandle;*(ULONGLONG*)((PUCHAR)InjectBuffer + 32) = (ULONGLONG)LdrLoadDll;*(ULONGLONG*)((PUCHAR)InjectBuffer + 44) = (ULONGLONG)&InjectBuffer->Complete;*(ULONGLONG*)((PUCHAR)InjectBuffer + 60) = (ULONGLONG)&InjectBuffer->Status;return InjectBuffer;}UNREFERENCED_PARAMETER(DllFullPath);return NULL;}// 创建32位注入代码PINJECT_BUFFER GetNative32Code(IN PVOID LdrLoadDll, IN PUNICODE_STRING DllFullPath){NTSTATUS Status = STATUS_SUCCESS;PINJECT_BUFFER InjectBuffer = NULL;SIZE_T Size = PAGE_SIZE;// CodeUCHAR Code[] = {0x68, 0, 0, 0, 0,                       // push ModuleHandle            offset +1 0x68, 0, 0, 0, 0,                       // push ModuleFileName          offset +60x6A, 0,                                // push Flags  0x6A, 0,                                // push PathToFile0xE8, 0, 0, 0, 0,                       // call LdrLoadDll              offset +150xBA, 0, 0, 0, 0,                       // mov edx, COMPLETE_OFFSET     offset +200xC7, 0x02, 0x7E, 0x1E, 0x37, 0xC0,     // mov [edx], CALL_COMPLETE     0xBA, 0, 0, 0, 0,                       // mov edx, STATUS_OFFSET       offset +310x89, 0x02,                             // mov [edx], eax0xC2, 0x04, 0x00                        // ret 4};Status = ZwAllocateVirtualMemory(ZwCurrentProcess(), &InjectBuffer, 0, &Size, MEM_COMMIT, PAGE_EXECUTE_READWRITE);if (NT_SUCCESS(Status)){// Copy pathPUNICODE_STRING32 pUserPath = &InjectBuffer->Path32;pUserPath->Length = DllFullPath->Length;pUserPath->MaximumLength = DllFullPath->MaximumLength;pUserPath->Buffer = (ULONG)(ULONG_PTR)InjectBuffer->Buffer;// Copy pathmemcpy((PVOID)pUserPath->Buffer, DllFullPath->Buffer, DllFullPath->Length);// Copy codememcpy(InjectBuffer, Code, sizeof(Code));// Fill stubs*(ULONG*)((PUCHAR)InjectBuffer + 1) = (ULONG)(ULONG_PTR)&InjectBuffer->ModuleHandle;*(ULONG*)((PUCHAR)InjectBuffer + 6) = (ULONG)(ULONG_PTR)pUserPath;*(ULONG*)((PUCHAR)InjectBuffer + 15) = (ULONG)((ULONG_PTR)LdrLoadDll - ((ULONG_PTR)InjectBuffer + 15) - 5 + 1);*(ULONG*)((PUCHAR)InjectBuffer + 20) = (ULONG)(ULONG_PTR)&InjectBuffer->Complete;*(ULONG*)((PUCHAR)InjectBuffer + 31) = (ULONG)(ULONG_PTR)&InjectBuffer->Status;return InjectBuffer;}UNREFERENCED_PARAMETER(DllFullPath);return NULL;}// -----------------------------------------------------------------------------------// 启动子线程函数(注入函数)// -----------------------------------------------------------------------------------// 启动线程NTSTATUS NTAPI SeCreateThreadEx(OUT PHANDLE ThreadHandle, IN ACCESS_MASK DesiredAccess, IN PVOID ObjectAttributes, IN HANDLE ProcessHandle, IN PVOID StartAddress, IN PVOID Parameter, IN ULONG Flags, IN SIZE_T StackZeroBits, IN SIZE_T SizeOfStackCommit, IN SIZE_T SizeOfStackReserve, IN PNT_PROC_THREAD_ATTRIBUTE_LIST AttributeList){NTSTATUS Status = STATUS_SUCCESS;// 根据字符串NtCreateThreadEx得到下标,并通过下标查询SSDT函数地址LPFN_NTCREATETHREADEX NtCreateThreadEx = (LPFN_NTCREATETHREADEX)(GetSSDTFuncCurAddr(GetIndexByName((UCHAR *)"NtCreateThreadEx")));DbgPrint("线程函数地址: %p --> 开始执行地址: %p \n", NtCreateThreadEx, StartAddress);if (NtCreateThreadEx){// 如果之前的模式是用户模式，地址传递到ZwCreateThreadEx必须在用户模式空间// 切换到内核模式允许使用内核模式地址/*dt !_KTHREAD+0x1c8 Win32Thread      : Ptr64 Void+ 0x140 WaitBlockFill11 : [176] UChar+ 0x1f0 Ucb : Ptr64 _UMS_CONTROL_BLOCK+ 0x232 PreviousMode : Char*/// Windows10 PreviousMode = 0x232PUCHAR pPrevMode = (PUCHAR)PsGetCurrentThread() + 0x232;// 64位 pPrevMode = 01UCHAR prevMode = *pPrevMode;// 内核模式*pPrevMode = KernelMode;// 创建线程Status = NtCreateThreadEx(ThreadHandle, DesiredAccess, ObjectAttributes, ProcessHandle, StartAddress, Parameter, Flags, StackZeroBits, SizeOfStackCommit, SizeOfStackReserve, AttributeList);// 恢复之前的线程模式*pPrevMode = prevMode;}else{Status = STATUS_NOT_FOUND;}return Status;}// 执行线程NTSTATUS ExecuteInNewThread(IN PVOID BaseAddress, IN PVOID Parameter, IN ULONG Flags, IN BOOLEAN Wait, OUT PNTSTATUS ExitStatus){HANDLE ThreadHandle = NULL;OBJECT_ATTRIBUTES ObjectAttributes = { 0 };// 初始化对象属性InitializeObjectAttributes(&ObjectAttributes, NULL, OBJ_KERNEL_HANDLE, NULL, NULL);// 创建线程NTSTATUS Status = SeCreateThreadEx(&ThreadHandle, THREAD_QUERY_LIMITED_INFORMATION, &ObjectAttributes, ZwCurrentProcess(), BaseAddress, Parameter, Flags, 0, 0x1000, 0x100000, NULL);// 等待线程完成if (NT_SUCCESS(Status) && Wait != FALSE){// 延迟 60sLARGE_INTEGER Timeout = { 0 };Timeout.QuadPart = -(60ll * 10 * 1000 * 1000);Status = ZwWaitForSingleObject(ThreadHandle, TRUE, &Timeout);if (NT_SUCCESS(Status)){// 查询线程退出码THREAD_BASIC_INFORMATION ThreadBasicInfo = { 0 };ULONG ReturnLength = 0;Status = ZwQueryInformationThread(ThreadHandle, ThreadBasicInformation, &ThreadBasicInfo, sizeof(ThreadBasicInfo), &ReturnLength);if (NT_SUCCESS(Status) && ExitStatus){// 这里是查询当前的dll是否注入成功*ExitStatus = ThreadBasicInfo.ExitStatus;}else if (!NT_SUCCESS(Status)){DbgPrint("%s: ZwQueryInformationThread failed with status 0x%X\n", __FUNCTION__, Status);}}else{DbgPrint("%s: ZwWaitForSingleObject failed with status 0x%X\n", __FUNCTION__, Status);}}else{DbgPrint("%s: ZwCreateThreadEx failed with status 0x%X\n", __FUNCTION__, Status);}if (ThreadHandle){ZwClose(ThreadHandle);}return Status;}// 切换到目标进程创建内核线程进行注入 (cr3切换)NTSTATUS AttachAndInjectProcess(IN HANDLE ProcessID, PWCHAR DllPath){PEPROCESS EProcess = NULL;KAPC_STATE ApcState;NTSTATUS Status = STATUS_SUCCESS;if (ProcessID == NULL){Status = STATUS_UNSUCCESSFUL;return Status;}// 获取EProcessStatus = PsLookupProcessByProcessId(ProcessID, &EProcess);if (Status != STATUS_SUCCESS){return Status;}// 判断目标进程x86 or x64BOOLEAN IsWow64 = (PsGetProcessWow64Process(EProcess) != NULL) ? TRUE : FALSE;// 将当前线程连接到目标进程的地址空间KeStackAttachProcess((PRKPROCESS)EProcess, &ApcState);__try{PVOID NtdllAddress = NULL;PVOID LdrLoadDll = NULL;UNICODE_STRING NtdllUnicodeString = { 0 };UNICODE_STRING DllFullPath = { 0 };// 获取ntdll模块基地址RtlInitUnicodeString(&NtdllUnicodeString, L"Ntdll.dll");NtdllAddress = GetUserModuleAddress(EProcess, &NtdllUnicodeString, IsWow64);if (!NtdllAddress){Status = STATUS_NOT_FOUND;}// 获取LdrLoadDllif (NT_SUCCESS(Status)){LdrLoadDll = GetModuleExportAddress(NtdllAddress, "LdrLoadDll", EProcess);if (!LdrLoadDll){Status = STATUS_NOT_FOUND;}}PINJECT_BUFFER InjectBuffer = NULL;if (IsWow64){// 注入32位DLLRtlInitUnicodeString(&DllFullPath, DllPath);InjectBuffer = GetNative32Code(LdrLoadDll, &DllFullPath);DbgPrint("[*] 注入32位DLL \n");}else{// 注入64位DLLRtlInitUnicodeString(&DllFullPath, DllPath);InjectBuffer = GetNative64Code(LdrLoadDll, &DllFullPath);DbgPrint("[*] 注入64位DLL \n");}//创建线程,执行构造的 shellcodeExecuteInNewThread(InjectBuffer, NULL, THREAD_CREATE_FLAGS_HIDE_FROM_DEBUGGER, TRUE, &Status);if (!NT_SUCCESS(Status)){DbgPrint("ExecuteInNewThread Failed\n");}}__except (EXCEPTION_EXECUTE_HANDLER){Status = STATUS_UNSUCCESSFUL;}// 释放EProcessKeUnstackDetachProcess(&ApcState);ObDereferenceObject(EProcess);return Status;}VOID Unload(PDRIVER_OBJECT pDriverObj){DbgPrint("[-] 驱动卸载 \n");}NTSTATUS DriverEntry(PDRIVER_OBJECT DriverObject, PUNICODE_STRING RegPath){DbgPrint("Hello LyShark \n");// 获取SSDT表基址KeServiceDescriptorTable = (PSYSTEM_SERVICE_TABLE)GetKeServiceDescriptorTable64(DriverObject);// 得到进程PIDHANDLE processid = GetProcessID("x32.exe");DbgPrint("进程PID = %d \n", processid);// 附加执行注入AttachAndInjectProcess(processid, L"C:\\hook.dll");DriverObject->DriverUnload = Unload;return STATUS_SUCCESS;}

运行如上这段代码片段，将编译好的DLL文件放入到C：\\hook.dll目录下，并运行x32.exe程序，手动加载驱动即可注入成功，输出效果图如下所示；

回到应用层进程中，可看到我们的DLL已经被注入到目标进程内了，效果图如下所示；

关键词：

驱动开发：内核远程线程实现DLL注入 看点

驱动开发：内核远程线程实现DLL注入看点