Ichunqiu云境 - Delegation Writeup

2022-12-10 21:31:18 浏览数 (4)

0x1 Info

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0x2 Recon

  1. Target external IP 39.98.34.149
  2. Nmap results
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  1. 关注80端口的http服务，目录爆破（省略）找到 /admin
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  1. 使用弱口令登录进入后台，去到模板页面，编辑header.html，添加php一句话 ` 用户名: admin, 密码：123456![f71dd2cf6322f6235561582fe3698a6.png](https://ask8088-private-1251520898.cn-south.myzijiebao.com/developer-images/article/7022325/5one0lge0t.png?q-sign-algorithm=sha1&q-ak=AKID2uZ1FGBdx1pNgjE3KK4YliPpzyjLZvug&q-sign-time=1670679057;1670686257&q-key-time=1670679057;1670686257&q-header-list=&q-url-param-list=&q-signature=a659ade6bc6576412c13061b83024fabe71f4730) 1. 命令执行 ![82a94d5ec8b215f3a9f2723e3be15fd.png](https://ask8088-private-1251520898.cn-south.myzijiebao.com/developer-images/article/7022325/myt2rt3n1o.png?q-sign-algorithm=sha1&q-ak=AKID2uZ1FGBdx1pNgjE3KK4YliPpzyjLZvug&q-sign-time=1670678997;1670686197&q-key-time=1670678997;1670686197&q-header-list=&q-url-param-list=&q-signature=b888af3a388ed00342c54cbd4971f8a739aaaa38) ## 0x03 入口点：172.22.4.36 1. 弹shell ![d3574e2db871fd6076c065e4fb03a9e.png](https://ask8088-private-1251520898.cn-south.myzijiebao.com/developer-images/article/7022325/q19fnazuxw.png?q-sign-algorithm=sha1&q-ak=AKID2uZ1FGBdx1pNgjE3KK4YliPpzyjLZvug&q-sign-time=1670678997;1670686197&q-key-time=1670678997;1670686197&q-header-list=&q-url-param-list=&q-signature=a7d2a89e7e9ce9f5fd0efd9feb315b9c28b16792) 快速过一下：![Pasted image 20221208123303.png](https://ask8088-private-1251520898.cn-south.myzijiebao.com/developer-images/article/7022325/c2q6paqlr3.png?q-sign-algorithm=sha1&q-ak=AKID2uZ1FGBdx1pNgjE3KK4YliPpzyjLZvug&q-sign-time=1670678997;1670686197&q-key-time=1670678997;1670686197&q-header-list=&q-url-param-list=&q-signature=27e6bf5dc999177d1e13e8c691d2d4664937e53c) 1. flag01 `diff --line-format=%L /dev/null /home/flag/flag01.txt` ![Pasted image 20221208165708.png](https://ask8088-private-1251520898.cn-south.myzijiebao.com/developer-images/article/7022325/ab8evydlr5.png?q-sign-algorithm=sha1&q-ak=AKID2uZ1FGBdx1pNgjE3KK4YliPpzyjLZvug&q-sign-time=1670678997;1670686197&q-key-time=1670678997;1670686197&q-header-list=&q-url-param-list=&q-signature=7fe47d4365e755baf28b1cfeee76cb441c9f7b6c) 1. flag01 里面有提示用户名 `WIN19Adrian` 2. 挂代理扫 445 ![Pasted image 20221208165856.png](https://ask8088-private-1251520898.cn-south.myzijiebao.com/developer-images/article/7022325/r7qbkld6ba.png?q-sign-algorithm=sha1&q-ak=AKID2uZ1FGBdx1pNgjE3KK4YliPpzyjLZvug&q-sign-time=1670678997;1670686197&q-key-time=1670678997;1670686197&q-header-list=&q-url-param-list=&q-signature=4954b1e9f7f6e0848017731bececeec081f69675) 获取到三个机器信息172.22.4.19 fileserver.xiaorang.lab172.22.4.7 DC01.xiaorang.lab172.22.4.45 win19.xiaorang.lab1. 用 Flag01提示的用户名 rockyou.txt 爆破，爆破出有效凭据 (提示密码过期) `win19Adrian babygirl1` 2. xfreerdp 远程登录上 win19 然后改密码 ![Pasted image 20221208171122.png](https://ask8088-private-1251520898.cn-south.myzijiebao.com/developer-images/article/7022325/oe43c054qo.png?q-sign-algorithm=sha1&q-ak=AKID2uZ1FGBdx1pNgjE3KK4YliPpzyjLZvug&q-sign-time=1670678997;1670686197&q-key-time=1670678997;1670686197&q-header-list=&q-url-param-list=&q-signature=fe938847de03598e9abaf4f86448865c79a3e863) ![Pasted image 20221208171214.png](https://ask8088-private-1251520898.cn-south.myzijiebao.com/developer-images/article/7022325/osp5tg24cw.png?q-sign-algorithm=sha1&q-ak=AKID2uZ1FGBdx1pNgjE3KK4YliPpzyjLZvug&q-sign-time=1670678997;1670686197&q-key-time=1670678997;1670686197&q-header-list=&q-url-param-list=&q-signature=1fb0ac85ccdc1dc7450c4d112d19883a91c35114) ## 0x04 Pwing WIN19 - 172.22.4.45 前言：当前机器除了机器账户外，完全没域凭据，需要提权到system获取机器账户 1. 桌面有提示 ![Pasted image 20221208171414.png](https://ask8088-private-1251520898.cn-south.myzijiebao.com/developer-images/article/7022325/7klffqx2zv.png?q-sign-algorithm=sha1&q-ak=AKID2uZ1FGBdx1pNgjE3KK4YliPpzyjLZvug&q-sign-time=1670678997;1670686197&q-key-time=1670678997;1670686197&q-header-list=&q-url-param-list=&q-signature=f0051ebbbaf706f145cd8dc9ac57521442ed14a4) 1. 关注这一栏，当前用户Adrian对该注册表有完全控制权限 ![Pasted image 20221208171546.png](https://ask8088-private-1251520898.cn-south.myzijiebao.com/developer-images/article/7022325/5gcvnc2le6.png?q-sign-algorithm=sha1&q-ak=AKID2uZ1FGBdx1pNgjE3KK4YliPpzyjLZvug&q-sign-time=1670678997;1670686197&q-key-time=1670678997;1670686197&q-header-list=&q-url-param-list=&q-signature=ecbf386ad16a9c973c99c22d2769e82d5342e089) ![Pasted image 20221208171610.png](https://ask8088-private-1251520898.cn-south.myzijiebao.com/developer-images/article/7022325/rnazsy4n17.png?q-sign-algorithm=sha1&q-ak=AKID2uZ1FGBdx1pNgjE3KK4YliPpzyjLZvug&q-sign-time=1670678997;1670686197&q-key-time=1670678997;1670686197&q-header-list=&q-url-param-list=&q-signature=ce291fa8cb8b54b2cd425daeb1628742ffd211dc) 1. 提权 msfvenom生成服务马，执行 sam.bat ![Pasted image 20221208144611.png](https://ask8088-private-1251520898.cn-south.myzijiebao.com/developer-images/article/7022325/bd5mqca5km.png?q-sign-algorithm=sha1&q-ak=AKID2uZ1FGBdx1pNgjE3KK4YliPpzyjLZvug&q-sign-time=1670678997;1670686197&q-key-time=1670678997;1670686197&q-header-list=&q-url-param-list=&q-signature=826bd9a512d19ead3981ae8f29f25d1e55db55cc) sam.bat ![Pasted image 20221208143321.png](https://ask8088-private-1251520898.cn-south.myzijiebao.com/developer-images/article/7022325/oa08pac482.png?q-sign-algorithm=sha1&q-ak=AKID2uZ1FGBdx1pNgjE3KK4YliPpzyjLZvug&q-sign-time=1670678997;1670686197&q-key-time=1670678997;1670686197&q-header-list=&q-url-param-list=&q-signature=0a215f9779c37c5cc6041cbf8e2761f114a8196b) 修改注册表并且启用服务，然后桌面就会获取到 sam，security，system ![Pasted image 20221208144646.png](https://ask8088-private-1251520898.cn-south.myzijiebao.com/developer-images/article/7022325/25y4zhk314.png?q-sign-algorithm=sha1&q-ak=AKID2uZ1FGBdx1pNgjE3KK4YliPpzyjLZvug&q-sign-time=1670678997;1670686197&q-key-time=1670678997;1670686197&q-header-list=&q-url-param-list=&q-signature=37482165cda0339e5967c965292c310be36be6f1) 1. 获取 Administrator 机器账户 凭据Administrator:500:aad3b435b51404eeaad3b435b51404ee:ba21c629d9fd56aff10c3e826323e6ab:::$MACHINE.ACC: aad3b435b51404eeaad3b435b51404ee:917234367460f3f2817aa4439f97e636
  2. 入口机器没特别的东西
  3. 没能提权到root权限（也不需要提权到root权限）
  4. stapbpf suid利用失败 找到diff suid

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  1. flag02
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  1. 使用机器账户收集域信息
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0x05 DC takeover - 172.22.4.7

  1. 分析 Bloodhound，发现 WIN19 DC01都是非约束委派
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  1. 使用Administrator登录进入 WIN19，部署rubeus
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  1. 使用DFSCoerce强制触发回连到win19并且获取到DC01的TGT
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  1. Base64的tgt 解码存为 DC01.kirbi
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  1. DCSync 获取域管凭据
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  1. psexec - flag04
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0x06 Fileserver takeover - 172.22.4.19

  1. psexec - flag03
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0x07 Outro

  • 感谢Alphabug师傅的提示（0x03 - 0x04），大哥已经把入口点都打完了，我只是跟着进来而已
  • 感谢九世师傅的合作
  • Spoofing已经打完了，walkthrough也写完了，等1000奖励到手后新年释出，个人感觉Spoofing更好玩，出题的思路很妙
  • 靶场地址：https://yunjing.ichunqiu.com/ranking/summary?id=BzMFNFpvUDU 里面包含从web到内网到域的靶场，总体来说很不错
https html 网络安全 编程算法 php

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