Url编码

题目密文是%66%6c%61%67%7b%61%6e%64%20%31%3d%31%7d，根据题目名字使用python的urllib模块解码即可。flag{and 1=1}

from urllib.parse import quote, unquotec = r'%66%6c%61%67%7b%61%6e%64%20%31%3d%31%7d'
m = unquote(c, encoding='utf-8')
print(m)c2 = quote(m, encoding='utf-8')
print(c2)

Quoted-printable

题目密文是=E9=82=A3=E4=BD=A0=E4=B9=9F=E5=BE=88=E6=A3=92=E5=93=A6，根据题目名字使用python的quopri模块解码即可。flag{那你也很棒哦}

import quopric = '=E9=82=A3=E4=BD=A0=E4=B9=9F=E5=BE=88=E6=A3=92=E5=93=A6'
m = quopri.decodestring(c.encode('utf-8')).decode('utf-8')
print(m)c2 = quopri.encodestring(m.encode('utf-8')).decode('utf-8')
print(c2)

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