写程序取自己进程的AEP

测试程序功能 

打印出自己进程的程序入口点地址.

结合OD载入程序，看到的入口点确实是0x004014f0, 说明程序入口点找到了

测试程序

/// @file exam_1_1.c

#include <stdlib.h>
#include <stdio.h>

void fnGetProgEntry();

int main(int agrc, char** argv)
{
    fnGetProgEntry();

    printf("END, press any key to quit
");
    getchar();
    return 0;
}

void fnGetProgEntry()
{
    #define PE_SIGNTURE 0x4550 ///< "PE"

    int* pFileAddressOfNewHeader = NULL;
    int* pCOFFFileHeader = NULL;
    int* pAEP = NULL;
    const int iAddrPeImgBase = 0x400000;

    /// iOffsetX 为偏移
    /// iContent 为地址中的内容
    const int iOffsetFileAddressOfNewHeader = (16 * 4 - 4); ///< File address of new header 相对于DosHeader的偏移
    const int iOffsetAEPToFileAddressOfNewHeader = 0x28;

    int iContentFileAddressOfNewHeader = 0;
    int iPeSignature = 0;
    int iOffsetAddressOfEntryPoint = 0; ///< 程序入口点偏移地址

    do
    {
        pFileAddressOfNewHeader = (int*)(iAddrPeImgBase + iOffsetFileAddressOfNewHeader);
        iContentFileAddressOfNewHeader = *pFileAddressOfNewHeader; ///< iContentFileAddressOfNewHeader = 0xd0

        pCOFFFileHeader = (int*)(iAddrPeImgBase + iContentFileAddressOfNewHeader);
        iPeSignature = *pCOFFFileHeader;
        if (PE_SIGNTURE != iPeSignature)
        {
            printf("error pe file
");
        }

        pAEP = (int*)((int)pCOFFFileHeader + iOffsetAEPToFileAddressOfNewHeader);
        iOffsetAddressOfEntryPoint = iAddrPeImgBase + *pAEP;
        printf("my address entry point is 0x%x
", iOffsetAddressOfEntryPoint);
    } while (0);

    printf("END, press any key to quit
");
}

运行结果

http://blog.csdn.net/lostspeed/article/details/49506193