查看PE文件导出表

#include "stdafx.h"
#include <Windows.h>

DWORD RVA2Offset(PIMAGE_NT_HEADERS pNTHeader, DWORD dwRVA)
{
    PIMAGE_SECTION_HEADER pSection = (PIMAGE_SECTION_HEADER)((DWORD)pNTHeader + sizeof(IMAGE_NT_HEADERS));

    for(int i = 0; i < pNTHeader->FileHeader.NumberOfSections; i++)
    {
        if(dwRVA >= pSection[i].VirtualAddress && dwRVA < (pSection[i].VirtualAddress + pSection[i].SizeOfRawData))
        {
            return pSection[i].PointerToRawData + (dwRVA - pSection[i].VirtualAddress);
        }
    }

    return 0;
}

int _tmain(int argc, _TCHAR* argv[])
{
    HANDLE hFile = CreateFile(argv[1], GENERIC_ALL, FILE_SHARE_WRITE, NULL, OPEN_EXISTING, NULL, NULL);
    HANDLE hMapping = CreateFileMapping(hFile, NULL, PAGE_READWRITE, 0, 0, NULL);
    PVOID pbFile = MapViewOfFile(hMapping, FILE_MAP_ALL_ACCESS, 0, 0, 0);

    if(INVALID_HANDLE_VALUE == hFile || NULL == hMapping || NULL == pbFile)
    {
        printf("\n\t---------- The File Inexistence! ----------\n");
        goto EXIT;
    }

    PIMAGE_DOS_HEADER pDosHeader = (PIMAGE_DOS_HEADER)pbFile;
    PIMAGE_NT_HEADERS pNTHeader = (PIMAGE_NT_HEADERS)((DWORD)pbFile + pDosHeader->e_lfanew);

    if(0x00004550 != pNTHeader->Signature)
    {
        printf("\n\t---------- Lawless PE File! ----------\n");
        goto EXIT;
    }

    DWORD dwExportOffset = RVA2Offset(pNTHeader, pNTHeader->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress);
    PIMAGE_EXPORT_DIRECTORY pExport = (PIMAGE_EXPORT_DIRECTORY)((DWORD)pbFile + dwExportOffset);
    DWORD dwFunctionNameOffset = (DWORD)pbFile + RVA2Offset(pNTHeader, pExport->Name);
    DWORD* pdwNamesAddress = (DWORD*)((DWORD)pbFile + RVA2Offset(pNTHeader, pExport->AddressOfNames));
    DWORD* pdwFunctionAddress = (DWORD*)((DWORD)pbFile + RVA2Offset(pNTHeader, pExport->AddressOfFunctions));
    WORD* pwOrdinals = (WORD*)((DWORD)pbFile + RVA2Offset(pNTHeader, pExport->AddressOfNameOrdinals));
 
    if(0 == pExport->NumberOfFunctions)
    {
        printf("\n\t---------- No Export Tabel! ----------\n");
        goto EXIT;
    }
   
    printf("FileName: %s\n", dwFunctionNameOffset);
    printf("NumberOfFunctions: %d\n", pExport->NumberOfFunctions);
    printf("NumberOfNames: %d\n\n", pExport->NumberOfNames);
    printf("NameExport:\n\n");

    for(int i = 0; i < pExport->NumberOfNames; i++)
    {
        DWORD dwFunctionAddress = pdwFunctionAddress[pwOrdinals[i]];
        DWORD pdwFunNameOffset = (DWORD)pbFile + RVA2Offset(pNTHeader, pdwNamesAddress[i]);

        printf("[ExportNum]: %-4d  [Name]: %-30s  [RVA]: 0x%08X\n", pExport->Base + i, pdwFunNameOffset, dwFunctionAddress);
    }

    printf("\nNumberExport:\n\n");

    for(int i = 0; i < pExport->NumberOfFunctions - pExport->NumberOfNames; i++)
    {
        printf("[ExportNum]: %-4d  [RVA]: 0x%08X\n", pExport->Base + i, pdwFunctionAddress[i]);
    }

    printf("\n");

EXIT:
    if(NULL != pbFile)
    {
        UnmapViewOfFile(pbFile);
    }

    if(NULL != hMapping)
    {
        CloseHandle(hMapping);
    }

    if (INVALID_HANDLE_VALUE != hFile)
    {
        CloseHandle(hFile);
    }

    return 0;
}