一段Base64

平台   Crypto   已通过

题目作者: harry

一　　血: ‌‌‌‌‌H3rmesk1t

一血奖励: 2金币

解　　决: 1620

提　　示:

描　　述: flag格式：flag{xxxxxxxxxxxxx}

附　　件: 下载

站长题解:

import base64
import html
from urllib.parse import unquote

s = open('file.txt', 'r').read()
s = base64.b64decode(s.encode()).decode()
s = unquote(s)
s = s[1:] # 去掉开头的\
s = ''.join(chr(int(d, 8)) for d in s.split('\\'))
s = s[2:] # 去掉开头的\x
s = ''.join(chr(int(d, 16)) for d in s.split('\\x'))
s = s.encode().decode('unicode-escape')
s = s[20:-1] # 去掉开头String.fromCharCode( 和 结尾 )
s = ''.join(chr(int(d, 10)) for d in s.split(','))
s = html.unescape(s)
s = html.unescape(s)
s = unquote(s)
print(s)

去做题