How might I convert Intel 80386 Machine Code to Assembly Language?

前端 未结 6 2032
暖寄归人
暖寄归人 2021-01-06 15:07

I\'ve been given the following task:

Consider the following sequence of hexadecimal values:

55 89 E5 83 EC 08 83 E4 F0 31 C9 BA 01 00 00 0

6条回答
  •  情歌与酒
    2021-01-06 15:20

    // hex.c
    1   #include 
    2   #include 
    3   
    4   int main () {
    5     char code[] = {0xB8, 0x3C, 0x0, 0x0, 0x0, 0xBF, 0x2, 0x0, 0x0, 0x0, 0xBA, 0x7D, 0x0, 0x0, 0x0, 0xC3};
    6     void *buf;
    7     buf = mmap (0,sizeof(code),PROT_READ|PROT_WRITE|PROT_EXEC,MAP_PRIVATE|MAP_ANON,-1,0);
    8     memcpy (buf, code, sizeof(code));
    9     return 0;
    10  }
    

    // gcc -g hex.c -o hex
    gdb hex;
    b 9;
    r;
    x /10i buf
    
    mov $0x3c,%eax
    mov $0x2,%edi
    mov $0x7d,%edx
    ret
    

提交回复
热议问题