新手一枚，如有错误（不足）请指正，谢谢！！
题目网址：https://cgctf.nuptsast.com/challenges#Re

下载下文件，IDA载入，找到main函数，F5伪代码

双击进入，查看correct的存放了啥，经整理

对输入的字符串进行处理
接下来就是写脚本了，先将那15000的数据导出来，


然后shift+e导成一个txt文本文档

#include <stdio.h>
int main()
{
    char str[15000] ={}//这里的数据直接用txt文本文档里的粘贴，15000行太长了
char strings[] = {0xC4,0X34,0x22,0xB1,0xD3,0x11,0x97,0x7,0xDB,0x37,0xC4,0x6,0x1D,0xFC,0x5B,0xED,0x98,0xDF,0x94,0xD8,0xB3,0x84,0xCC,0x8,0};

int v0,i,result;
char v3;
  for ( i = 14997; i >= 0; i -= 3 )
  {
    v0 = str[i];
    v3 = str[i + 2];
    result = v0;
    switch ( v0 )
    {
      case 1u:
        result = str[i + 1];
        strings[(int)result] -= v3;
        break;
      case 2u:
        result = str[i + 1];
        strings[(int)result] += v3;
        break;
      case 3u:
        result = str[i + 1];
        strings[(int)result] ^= v3;
        break;
      case 4u:
        result = str[i + 1];
        strings[(int)result] /= v3;
        break;
      case 5u:
        result = str[i + 1];
        strings[(int)result] ^= strings[str[i + 2]];
        break;
      default:
        continue;
    }
    }
puts(strings);
    return 0;
}

运行脚本得到flag为nctf{Embr4ce_Vm_j0in_R3}