Crypto

first of all，作为一只没有系统了解pwn的小白，第一次做密码，感觉是，题目名字特别重要，就是可以找到很多线索，这个真的深有体会，po两道我做了的，很容易的密码题，纪念一下我昨天的感受

贝斯家族三兄弟

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一大堆乱七八糟的东西也看不懂，不过，看题目，base三兄弟嘛，就是16，32，64轮着来
推荐一个很好用的转换编码的网站

http://ctf.ssleye.com/base64.html

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

继续，一遍一遍，三个换着来。哈哈哈哈哈

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amFjdGZ7NChiNjRfMzJfMTYpfQ==

出来了

罗马帝国缔造者

h^_o`[pZi^i`

题目就长这样
看标题真的很重要，缔造者是凯撒，so，很容易猜，应该是凯撒密码

右键首先查看一下是unicode
http://tool.chinaz.com/Tools/Unicode.aspx
这个网站不错用来转换

h^_o`[pZi^i`

因为前面的格式是jactf
对应的是

jactf

对比一下

h^_o`[pZi^i`
jactf```
依次是加2，3，4，5，6，

> 所以可以推测一下，之后就是加6，7以此类推
> 试一下可以得到
> jactfbxcsium

jactfbxcsium

写成flag格式

jactf{bxcsium}

可以咯～～～～～
密码学三分靠猜，加油呀