re | [MRCTF2020]Transform

过节划个水，做一个1分题。

这是一个windows x64的逆向。

肥肠简单的异或。

有点太简单了，不说明了，丢脚本：

 1 aim = [
 2 0x67,0x79,0x7B,0x7F,0x75,0x2B,0x3C,0x52,0x53,0x79,0x57,0x5E,0x5D,0x42,0x7B,0x2D,0x2A,0x66,0x42,0x7E,0x4C,0x57,0x79,0x41,0x6B,0x7E,0x65,0x3C,0x5C,0x45,0x6F,0x62,0x4D
 3 ]
 4 
 5 table = [
 6 0x09,0x0A,0x0F,0x17,0x07,0x18,0x0C,0x06,0x01,0x10,0x03,0x11,0x20,0x1D,0x0B,0x1E,0x1B,0x16,0x04,0x0D,0x13,0x14,0x15,0x02,0x19,0x05,0x1F,0x08,0x12,0x1A,0x1C,0x0E,0x00
 7 ]
 8 
 9 flag = []
10 for i in range(33):
11     for j in range(33,127):
12         if j ^ table[i] == aim[i]:
13             flag.append(chr(j))
14             break
15 
16 print(''.join(flag))
17 _flag = [0 for i in range(33)]
18 for i in range(33):
19     _flag[table[i]] = flag[i]
20     
21 print(''.join(_flag))