PE 解析
Posted
tags:
篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了PE 解析相关的知识，希望对你有一定的参考价值。
实现了解析三个头各区段与虚拟地址偏移转文件偏移
#include<Windows.h>
#include<iostream>
#include<stdio.h>
#include<stdlib.h>
#include<commdlg.h>
using namespace std;
DWORD dwFileSize;
BYTE* g_pFileImageBase = 0;
PIMAGE_NT_HEADERS g_pNt = 0;
DWORD RVAtoFOA(DWORD dwRVA);
//显示pe头
//参数为内存映射首地址
void myPE() {
OPENFILENAME stOF;
HANDLE hFile, hMapFile;
DWORD totalSize; //文件大小
LPVOID lpMemory; //内存映像文件在内存的起始位置
char szFileName[MAX_PATH] = { 0 }; //要打开的文件路径及名称名
char bufTemp1[10]; //每个字符的十六进制字节码
char bufTemp2[20]; //第一列
char lpServicesBuffer[100]; //一行的所有内容
char bufDisplay[50]; //第三列ASCII码字符
DWORD dwCount; //计数，逢16则重新计
DWORD dwCount1; //地址顺号
DWORD dwBlanks; //最后一行空格数
char szExtPe[] = TEXT("PE Files\0*.exe;*.dll;*.scr;*.fon;*.drv\0All Files(*.*)\0*.*\0\0");
RtlZeroMemory(&stOF, sizeof(stOF));
stOF.lStructSize = sizeof(stOF);
//stOF.hwndOwner = (HWND)GetModuleHandle(NULL);
stOF.lpstrFilter = szExtPe;
stOF.lpstrFile = szFileName;
stOF.nMaxFile = MAX_PATH;
stOF.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;
if (GetOpenFileName(&stOF)) //让用户选择打开的文件
{
hFile = CreateFile(szFileName, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, OPEN_EXISTING, FILE_ATTRIBUTE_ARCHIVE, NULL);
//如果是无效的句柄
if (hFile == INVALID_HANDLE_VALUE) {
printf("文件打开失败\n");
return;
}
//获取文件大小
dwFileSize = GetFileSize(hFile, NULL);
g_pFileImageBase = new BYTE[dwFileSize]{};
DWORD dwRead;
//将文件读取到内存中
bool bRet =ReadFile(hFile, g_pFileImageBase, dwFileSize, &dwRead, NULL);
//如果读取失败就返回
if (!bRet)
{
delete[] g_pFileImageBase;
}
//关闭句柄
CloseHandle(hFile);
/////////////////////////////////dos头///////////////////////////////////////////////
//typedef struct _IMAGE_DOS_HEADER { // DOS .EXE header
// WORD e_magic; // Magic number
// WORD e_cblp; // Bytes on last page of file
// WORD e_cp; // Pages in file
// WORD e_crlc; // Relocations
// WORD e_cparhdr; // Size of header in paragraphs
// WORD e_minalloc; // Minimum extra paragraphs needed
// WORD e_maxalloc; // Maximum extra paragraphs needed
// WORD e_ss; // Initial (relative) SS value
// WORD e_sp; // Initial SP value
// WORD e_csum; // Checksum
// WORD e_ip; // Initial IP value
// WORD e_cs; // Initial (relative) CS value
// WORD e_lfarlc; // File address of relocation table
// WORD e_ovno; // Overlay number
// WORD e_res[4]; // Reserved words
// WORD e_oemid; // OEM identifier (for e_oeminfo)
// WORD e_oeminfo; // OEM information; e_oemid specific
// WORD e_res2[10]; // Reserved words
// LONG e_lfanew; // File address of new exe header
//} IMAGE_DOS_HEADER, *PIMAGE_DOS_HEADER;
/////////////////////////////////dos头///////////////////////////////////////////////
//使用PIMAGE_DOS_HEADER（占64字节）解释前64个字节
PIMAGE_DOS_HEADER pDos = (PIMAGE_DOS_HEADER)g_pFileImageBase;
//判断PE文件的标识是否正确，有一个不对，那么它就不是PE文件
if (pDos->e_magic != IMAGE_DOS_SIGNATURE)//0x5A4D(‘MZ‘)
{
return ;
}
cout << "---------------------------DOS头（_IMAGE_DOS_HEADER）------------------------------- "<< endl;
cout << hex << "WORD e_magic: " << pDos->e_magic << endl;
cout << hex << "WORD e_cblp: " << pDos->e_cblp << endl;
cout << hex << "WORD e_cp: " << pDos->e_cp << endl;
cout << hex << "WORD e_cblp: " << pDos->e_cblp << endl;
cout << hex << "WORD e_cparhdr: " << pDos->e_cparhdr << endl;
cout << hex << "WORD e_minalloc: " << pDos->e_minalloc << endl;
cout << hex << "WORD e_ss: " << pDos->e_ss << endl;
cout << hex << "WORD e_sp: " << pDos->e_sp << endl;
cout << hex << "WORD e_csum: " << pDos->e_csum << endl;
cout << hex << "WORD e_ip: " << pDos->e_ip << endl;
cout << hex << "WORD e_cs: " << pDos->e_cs << endl;
cout << hex << "WORD e_lfarlc: " << pDos->e_lfarlc << endl;
cout << hex << "WORD e_ovno: " << pDos->e_ovno << endl;
cout << hex << "WORD e_res[4]: " << *(pDos->e_res) << endl;
cout << hex << "WORD e_oemid: " << pDos->e_oemid << endl;
cout << hex << "WORD e_oeminfo: " << pDos->e_oeminfo << endl;
cout << hex << "WORD e_res2[10]: " << *(pDos->e_res2) << endl;
cout << hex << "WORD e_lfanew: " << pDos->e_lfanew << endl;
/////////////////////////////////NT头///////////////////////////////////////////////
/*typedef struct _IMAGE_NT_HEADERS {
DWORD Signature;
IMAGE_FILE_HEADER FileHeader;
IMAGE_OPTIONAL_HEADER32 OptionalHeader;
} IMAGE_NT_HEADERS32, *PIMAGE_NT_HEADERS32;*/
g_pNt = (PIMAGE_NT_HEADERS)(pDos->e_lfanew + g_pFileImageBase);
if (g_pNt->Signature != IMAGE_NT_SIGNATURE)//0x00004550(‘PE‘)
{
return ;
}
cout << "---------------------------NT头（PIMAGE_NT_HEADERS）------------------------------- " << endl;
cout << hex << "DWORD Signature; " << g_pNt->Signature << endl;
cout << hex << "IMAGE_FILE_HEADER FileHeader; " << &g_pNt->OptionalHeader << endl;
cout << hex << "IMAGE_OPTIONAL_HEADER32 OptionalHeader; " << &g_pNt->OptionalHeader << endl;
/////////////////////////////////FILE头///////////////////////////////////////////////
/*typedef struct _IMAGE_FILE_HEADER {
WORD Machine;
WORD NumberOfSections;
DWORD TimeDateStamp;
DWORD PointerToSymbolTable;
DWORD NumberOfSymbols;
WORD SizeOfOptionalHeader;
WORD Characteristics;
} IMAGE_FILE_HEADER, *PIMAGE_FILE_HEADER;*/
PIMAGE_FILE_HEADER mytmf = &(g_pNt->FileHeader);
cout << "---------------------------FILE头（IMAGE_FILE_HEADER ）----------------------------- " << endl;
cout << hex << "WORD Machine; " << mytmf->Machine << endl;
cout << hex << "WORD NumberOfSections; " << mytmf->NumberOfSections << endl;
cout << hex << "DWORD TimeDateStamp; " << mytmf->TimeDateStamp << endl;
cout << hex << "DWORD PointerToSymbolTable; " << mytmf->PointerToSymbolTable << endl;
cout << hex << "DWORD NumberOfSymbols; " << mytmf->NumberOfSymbols << endl;
cout << hex << "WORD SizeOfOptionalHeader; " << mytmf->SizeOfOptionalHeader << endl;
cout << hex << "WORD Characteristics; " << mytmf->Characteristics << endl;
/////////////////////////////////Optional头///////////////////////////////////////////////
//
// Optional header format.
//
//typedef struct _IMAGE_OPTIONAL_HEADER {
// //
// // Standard fields.
// //
// WORD Magic;
// BYTE MajorLinkerVersion;
// BYTE MinorLinkerVersion;
// DWORD SizeOfCode;
// DWORD SizeOfInitializedData;
// DWORD SizeOfUninitializedData;
// DWORD AddressOfEntryPoint;
// DWORD BaseOfCode;
// DWORD BaseOfData;
// //
// // NT additional fields.
// //
// DWORD ImageBase;
// DWORD SectionAlignment;
// DWORD FileAlignment;
// WORD MajorOperatingSystemVersion;
// WORD MinorOperatingSystemVersion;
// WORD MajorImageVersion;
// WORD MinorImageVersion;
// WORD MajorSubsystemVersion;
// WORD MinorSubsystemVersion;
// DWORD Win32VersionValue;
// DWORD SizeOfImage;
// DWORD SizeOfHeaders;
// DWORD CheckSum;
// WORD Subsystem;
// WORD DllCharacteristics;
// DWORD SizeOfStackReserve;
// DWORD SizeOfStackCommit;
// DWORD SizeOfHeapReserve;
// DWORD SizeOfHeapCommit;
// DWORD LoaderFlags;
// DWORD NumberOfRvaAndSizes;
// IMAGE_DATA_DIRECTORY DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES];
//} IMAGE_OPTIONAL_HEADER32, *PIMAGE_OPTIONAL_HEADER32;
PIMAGE_OPTIONAL_HEADER32 myoption = &(g_pNt->OptionalHeader);
cout << "---------------------------OPTIONAL头（PIMAGE_OPTIONAL_HEADER32 ）-------------------------------------------------- " << endl;
cout << "---------------------------------------Standard fields.------------------------------------------------------------- " << endl;
cout << hex << "WORD Magic; " << myoption->Magic << endl;
cout << hex << "BYTE MajorLinkerVersion; " << myoption->MajorLinkerVersion << endl;
cout << hex << "BYTE MinorLinkerVersion; " << myoption->MinorLinkerVersion << endl;
cout << hex << "DWORD SizeOfCode; " << myoption->SizeOfCode << endl;
cout << hex << "DWORD SizeOfInitializedData; " << myoption->SizeOfInitializedData << endl;
cout << hex << "DWORD SizeOfUninitializedData; " << myoption->SizeOfUninitializedData << endl;
cout << hex << "DWORD AddressOfEntryPoint; " << myoption->AddressOfEntryPoint << endl;
cout << hex << "DWORD BaseOfCode; " << myoption->BaseOfCode << endl;
cout << hex << "DWORD BaseOfData; " << myoption->BaseOfData << endl;
cout << "----------------------------------------- NT additional fields.----------------------------------------------------- " << endl;
cout << hex << "DWORD ImageBase; " << myoption->ImageBase << endl;
cout << hex << "DWORD SectionAlignment; " << myoption->SectionAlignment << endl;
cout << hex << "DWORD FileAlignment; " << myoption->FileAlignment << endl;
cout << hex << "WORD MajorOperatingSystemVersion; " << myoption->MajorOperatingSystemVersion << endl;
cout << hex << "WORD MinorOperatingSystemVersion; " << myoption->MinorOperatingSystemVersion << endl;
cout << hex << "WORD MajorImageVersion; " << myoption->MajorImageVersion << endl;
cout << hex << "DWORD SectionAlignment; " << myoption->SectionAlignment << endl;
cout << hex << "WORD MinorImageVersion; " << myoption->MinorImageVersion << endl;
cout << hex << "WORD MajorSubsystemVersion; " << myoption->MajorSubsystemVersion << endl;
cout << hex << "WORD MinorSubsystemVersion; " << myoption->MinorSubsystemVersion << endl;
cout << hex << "DWORD Win32VersionValue; " << myoption->Win32VersionValue << endl;
cout << hex << "DWORD SizeOfImage; " << myoption->SizeOfImage << endl;
cout << hex << "DWORD SizeOfHeaders; " << myoption->SizeOfHeaders << endl;
cout << hex << "DWORD CheckSum; " << myoption->CheckSum << endl;
cout << hex << "WORD Subsystem; " << myoption->Subsystem << endl;
cout << hex << "WORD DllCharacteristics; " << myoption->DllCharacteristics << endl;
cout << hex << "DWORD SizeOfStackReserve; " << myoption->SizeOfStackReserve << endl;
cout << hex << "DWORD SizeOfStackCommit; " << myoption->SizeOfStackCommit << endl;
cout << hex << "DWORD SizeOfHeapReserve; " << myoption->SizeOfHeapReserve << endl;
cout << hex << "DWORD SizeOfHeapCommit; " << myoption->SizeOfHeapCommit << endl;
cout << hex << "DWORD LoaderFlags; " << myoption->LoaderFlags << endl;
cout << hex << "DWORD NumberOfRvaAndSizes; " << myoption->NumberOfRvaAndSizes << endl;
cout << hex << "IMAGE_DATA_DIRECTORY DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES];" << &(myoption->DataDirectory) << endl;
/////////////////////////////////////////////所有区段表头////////////////////////////////////////////////////
/*typedef struct _IMAGE_SECTION_HEADER {
BYTE Name[IMAGE_SIZEOF_SHORT_NAME];
union {
DWORD PhysicalAddress;
DWORD VirtualSize;
} Misc;
DWORD VirtualAddress;
DWORD SizeOfRawData;
DWORD PointerToRawData;
DWORD PointerToRelocations;
DWORD PointerToLinenumbers;
WORD NumberOfRelocations;
WORD NumberOfLinenumbers;
DWORD Characteristics;
} IMAGE_SECTION_HEADER, *PIMAGE_SECTION_HEADER;*/
//所有区表头都在一起
//大文件头中找区段数
int nCountOfSection = g_pNt->FileHeader.NumberOfSections;
//取第一个区表头
PIMAGE_SECTION_HEADER pSec = IMAGE_FIRST_SECTION(g_pNt);
//循环
for (int i = 0; i < nCountOfSection; i++)
{
cout << "----------------------第"<<i<<"个-----PIMAGE_SECTION_HEADER头（PIMAGE_OPTIONAL_HEADER32 ）----------------------------- " << endl;
cout << "BYTE Name[IMAGE_SIZEOF_SHORT_NAME]; " << pSec->Name << endl;
cout << hex << "DWORD PhysicalAddress; " << pSec->Misc.PhysicalAddress << endl;
cout << hex << "DWORD VirtualSize; " << pSec->Misc.VirtualSize << endl;
cout << hex << "DWORD VirtualAddress; " << pSec->VirtualAddress << endl;
cout << hex << "DWORD SizeOfRawData; " << pSec->SizeOfRawData << endl;
cout << hex << "DWORD PointerToRawData; " << pSec->PointerToRawData << endl;
cout << hex << "DWORD PointerToRelocations; " << pSec->PointerToRelocations << endl;
cout << hex << "WORD PointerToLinenumbers; " << pSec->PointerToLinenumbers << endl;
cout << hex << "WORD NumberOfRelocations; " << pSec->NumberOfRelocations << endl;
cout << hex << "DWORD NumberOfLinenumbers; " << pSec->NumberOfLinenumbers << endl;
cout << hex << "DWORD Characteristics; " << pSec->Characteristics << endl;
cout << hex << "在文件中相对文件偏移; " << RVAtoFOA(pSec->VirtualAddress) << endl;
//下一个区表头首地址
++pSec;
}
return ;
}
}
void _openFile();
DWORD RVAtoFOA(DWORD dwRVA)
{
//此RVA落在哪个区段中
//找到所在区段后，
//减去所在区段的起始位置，加上在文件中的起始位置
//大文件头中找区段数
int nCountOfSection = g_pNt->FileHeader.NumberOfSections;
//区段表头
PIMAGE_SECTION_HEADER pSec = IMAGE_FIRST_SECTION(g_pNt);
//在扩展头中找到块对齐数
DWORD dwSecAligment = g_pNt->OptionalHeader.SectionAlignment;
//循环
for (int i = 0; i < nCountOfSection; i++)
{
//求在内存中的真实大小
//Misc.VirtualSize % dwSecAligment如果是0代表刚好对齐否则就先对齐（非0就是真）
//Misc.VirtualSize / dwSecAligment * dwSecAligment + dwSecAligment //最后加上余数的对齐
DWORD dwRealVirSize = pSec->Misc.VirtualSize % dwSecAligment ?
pSec->Misc.VirtualSize / dwSecAligment * dwSecAligment + dwSecAligment
: pSec->Misc.VirtualSize;
//区段中的相对虚拟地址转文件偏移 思路是 用要转换的地址与各个区
//段起始地址做比较如果落在一个区段中（大于起始地址小于起始地址加区段最大偏移和），
//就用要转换的相对虚拟地址减去区段的起始地址的相对虚拟地址，
//得到了这个地址相对这个区段偏移，再用得到的这个偏移加上区段在文件中的偏移的起始位置
//（pointerToRawData字段)就是他在文件中的文件偏移
if (dwRVA >= pSec->VirtualAddress &&
dwRVA < pSec->VirtualAddress + dwRealVirSize)
{
//FOA = RVA - 内存中区段的起始位置 + 在文件中区段的起始位置
return dwRVA - pSec->VirtualAddress + pSec->PointerToRawData;
}
//下一个区段地址
pSec++;
}
}
int main() {
myPE();
//_openFile();
cin.get();
}以上是关于PE 解析的主要内容，如果未能解决你的问题，请参考以下文章