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社区首页 >专栏 >今年十八,基础过关

今年十八,基础过关

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吉师散养基地
发布2023-01-13 09:47:31
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发布2023-01-13 09:47:31
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文章被收录于专栏:我奏是太阳

目录

前言

 第一关:KEY在哪里

 再加密一次你就得到key啦~

 猜猜这是经过了多少次加密?

据说MD5加密很安全,真的是么?

种族歧视

 HAHA浏览器

key究竟在哪里呢?

 key又找不到了

冒充登陆用户​编辑

 比较数字大小

就不让你访问

前言

🍀作者简介:被吉师散养、喜欢前端、学过后端、练过CTF、玩过DOS、不喜欢java的不知名学生。 🍁个人主页:被吉师散养的职业混子 🍂相应专栏:CTF专栏

 第一关:KEY在哪里

这个平台的难度不大,所以猜key在源代码中

 再加密一次你就得到key啦~

 再加密一次,这哥也没说拿啥加密啊,没招,一个一个试

通过尝试,看出是ROT13

 猜猜这是经过了多少次加密?

代码语言:javascript
复制
/*
* 提示:该行代码过长,系统自动注释不进行高亮。一键复制会移除系统注释 
* 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
*/

一串非常长的字符串

 看到最后的等号,猜测是base64加密

 多次解码交换,得到KEY

据说MD5加密很安全,真的是么?

 首先给大家介绍下md5加密,据说是不可逆的一个加密方式

 。。6

那么他是如何成功解密的呢。

问了队里的师傅,是通过撞库来实现的,即数据库中已经存在了常见弱口令的md5值,然后去和数据库中的做对比

种族歧视

 这题挺好整的

抓包拦截请求,把accept-Language中的中文去掉就好

 HAHA浏览器

 这个也很简单,抓包

直接在User-agent里面把Chorme改成HAHA浏览器即可

key究竟在哪里呢?

 其实蛮简单的,抓包劫持响应,就能看到了

 key又找不到了

通过抓包劫持响应

 看到最下面有一个./key_is_here_now_.php

访问下试试

 6

冒充登陆用户

 这个直接不经过思考,抓包改cookie,改成1就好

 比较数字大小

 也是,经验直接猜,估计限制了输入长度

 果然

 改完之后

就不让你访问

首先进入题目链接

 试图访问却报错

看下robots.txt

 发现我们有一个路径被禁止访问

访问下

 发现真正的KEY在login.php中

md累死我了

本文参与 腾讯云自媒体同步曝光计划,分享自作者个人站点/博客。
原始发表:2023-01-10,如有侵权请联系 cloudcommunity@tencent.com 删除

本文分享自 作者个人站点/博客 前往查看

如有侵权,请联系 cloudcommunity@tencent.com 删除。

本文参与 腾讯云自媒体同步曝光计划  ,欢迎热爱写作的你一起参与!

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目录
  • 前言
  •  第一关:KEY在哪里
  •  再加密一次你就得到key啦~
  •  猜猜这是经过了多少次加密?
  • 据说MD5加密很安全,真的是么?
  • 种族歧视
  •  HAHA浏览器
  • key究竟在哪里呢?
  •  key又找不到了
  • 冒充登陆用户
  •  比较数字大小
  • 就不让你访问
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