BUUCTF CRYPTO部分题目wp

对密码学了解不多,做一下熟悉熟悉

1,看我回旋踢

给的密文synt{5pq1004q-86n5-46q8-o720-oro5on0417r1}

简单的凯撒密码,用http://www.zjslove.com/3.decode/kaisa/index.html

 

BUUCTF CRYPTO部分题目wp

得到flag

2,md5

密文:e00cf25ad42683b3df678c61f42c6bda

md5解密:https://www.cmd5.com

BUUCTF CRYPTO部分题目wp

得到flag

3,url编码 

密文:%66%6c%61%67%7b%61%6e%64%20%31%3d%31%7d

http://tool.chinaz.com/tools/urlencode.aspx

 

得到flag

4,摩丝

密文:.. .-.. --- ...- . -.-- --- ..-

http://www.zuo114.com/mesm/

大写得到flag

5,变异凯撒

密文:afZ_r9VYfScOeO_UL^RWUc

格式:flag{}

根据格式,密文前五位ascii与格式相差为5,6,7,8,9,写脚本

 

m='afZ_r9VYfScOeO_UL^RWUc'
a=5
for i in range(0,len(m)):
    print(chr(ord(m[i])+a),end='')
    a+=1

  

6,Quoted-printable

密文:=E9=82=A3=E4=BD=A0=E4=B9=9F=E5=BE=88=E6=A3=92=E5=93=A6

http://web.chacuo.net/charsetquotedprintable

 

解密得flag

7,password

打开文件

BUUCTF CRYPTO部分题目wp

flag{zs19900315}

8,一眼就解密

密文:ZmxhZ3tUSEVfRkxBR19PRl9USElTX1NUUklOR30=

base64:http://tool.chinaz.com/Tools/Base64.aspx

 

解密得flag

9,丢失的MD5

送分题,给了一段python

import hashlib   
for i in range(32,127):
    for j in range(32,127):
        for k in range(32,127):
            m=hashlib.md5()
            m.update('TASC'+chr(i)+'O3RJMV'+chr(j)+'WDJKX'+chr(k)+'ZM')
            des=m.hexdigest()
            if 'e9032' in des and 'da' in des and '911513' in des:
                print des

 

 跑一遍得flag,大概是展示md5爆破

10,rabbit

密文:U2FsdGVkX1/+ydnDPowGbjjJXhZxm2MP2AgI

rabbit密码:http://tool.chinaz.com/Tools/TextEncrypt.aspx 

解密得flag

11,

 

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