crackme.chm之figugegl.1.exe

来源：互联网发布：mac怎么切换独立显卡编辑：程序博客网时间：2024/06/05 15:37

使用Resource Hacker+IDA定位程序验证逻辑，不熟悉的可以看我逆向技巧栏目相关文章

可以得出等价伪代码以及对应注册算法如下

#include <iostream>using namespace std;/*int main(HWND hWnd){  UINT iNLen; // esi@1  UINT iSerial; // eax@2  int i; // edi@4  char szSerial[21]; // [sp+Eh] [bp-2Ah]@3  char szName[21]; // [sp+23h] [bp-15h]@1  iNLen = GetDlgItemTextA(hWnd, 101, &szName, 20);  if (iNLen>=5)  {    iSerial = GetDlgItemTextA(hWnd, 102, &szSerial, 20);    if (iSerial)    {      for (i=0; i<iNLen; ++i)      {        if (szSerial[i] != szName[i]-i)          return 0;      }      MessageBoxA(hWnd, "Congratulations - you did it!", "Success", 0);      iSerial = 1;    }  }  else  {    iSerial = 0;  }  return iSerial;}*/void main(){char szName[] = "@@@@@";char szSerial[6] = {'\0'};for (int i=0; i<5; ++i){szSerial[i] = szName[i]-i;}cout<<"The Serial:"<<szSerial<<endl;}

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