【武功山杯】软件安全——葛仙炼丹

6 葛仙炼丹

NPC的提示

葛仙翁：君可曾备有jd-gui之神器？此物可助吾等解密代码，洞悉其间玄机，若有此神器相助，必能事半功倍，解开眼前之难题

正文

不听提示的，GDA直接打开

很容易就找到关键代码，没什么好说的，就是俩数组异或。

开始编写代码

a = [228, 127, 208, 228, 152, 'Q', 148, 213, 236, 189, 182, 129, 179, 92, 174, '!', 12, 182, 'Q', 1, '6', 'e', 21, 'q',
     92, 184, 243, 15, 'J', 242, 12, 225, 234, '|', 179, 7]
b = [130, 19, 177, 131, 227, '3', 173, 183, 221, 132, 132, 231, 133, ':', 155, 24, '9', 143, 'a', '7', 14, 'S', 39, 'I',
     '>', 142, 196, '7', 'y', 194, 'o', 131, 211, 31, 138, 'z']
c = []
for i in range(len(a)):
    if type(a[i]) == str and type(b[i]) == str:
        c.append(ord(a[i]) ^ ord(b[i]))
    elif type(a[i]) == str and type(b[i]) == int:
        c.append(ord(a[i]) ^ b[i])
    elif type(a[i]) == int and type(b[i]) == str:
        c.append(a[i] ^ ord(b[i]))
    else:
        c.append(a[i] ^ b[i])
print(''.join([chr(i) for i in c]))

运行得到flag