查看PE文件导入表

这个博客空间主席帮申请下来快一年了，都快忘了。最近一直在学习PE文件，贴段代码，功能如题，自己学习写的练习程序，VC2005编译，控制台程序，有很多不严谨和不完善的地方！

#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 dwImportOffset = RVA2Offset(pNTHeader, pNTHeader->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress);
    PIMAGE_IMPORT_DESCRIPTOR pImport = (PIMAGE_IMPORT_DESCRIPTOR)((DWORD)pbFile + dwImportOffset);

    DWORD dwOriginalThunkOffset = 0;
    DWORD dwThunkData = 0;
    PIMAGE_IMPORT_BY_NAME pImageFunName = NULL;
    PIMAGE_THUNK_DATA pThunkData = NULL;

    for(int i = 0; i < pNTHeader->OptionalHeader.DataDirectory[1].Size / sizeof(IMAGE_IMPORT_DESCRIPTOR) - 1; i++)
    {
        printf("[DLL Name]: %s\n\n", ((DWORD)pbFile + RVA2Offset(pNTHeader, pImport[i].Name)));

        pThunkData = (PIMAGE_THUNK_DATA)((DWORD)pbFile + RVA2Offset(pNTHeader, pImport[i].FirstThunk));

        for(int j = 0; pThunkData[j].u1.Ordinal != 0; j++)
        {
            if(pThunkData[j].u1.Ordinal & IMAGE_ORDINAL_FLAG32)
            {
                printf("    [%03d]  ---  Number: %04d    Name: <NULL>\n", j + 1, pThunkData[j].u1.Ordinal & 0xFFFF);
            }
            else
            {
                pImageFunName = (PIMAGE_IMPORT_BY_NAME)((DWORD)pbFile + RVA2Offset(pNTHeader, pThunkData[j].u1.AddressOfData));
                printf("    [%03d]  ---  Number: %04d    Name: %s\n", j + 1, pImageFunName->Hint, pImageFunName->Name);
            }
        }

        printf("\n");
    }

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

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

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

    return 0;
}