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https://github.com/AbdullahRizwan101/CTF-Writeups
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160 lines
7.1 KiB
Markdown
160 lines
7.1 KiB
Markdown
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# TryHackMe-Hacker Of The Hill
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## Easy
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### Rustscan
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```
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rustscan -a 10.10.193.208 -- -A -sC -sV
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.----. .-. .-. .----..---. .----. .---. .--. .-. .-.
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| {} }| { } |{ {__ {_ _}{ {__ / ___} / {} \ | `| |
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| .-. \| {_} |.-._} } | | .-._} }\ }/ /\ \| |\ |
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`-' `-'`-----'`----' `-' `----' `---' `-' `-'`-' `-'
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The Modern Day Port Scanner.
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________________________________________
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: https://discord.gg/GFrQsGy :
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: https://github.com/RustScan/RustScan :
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--------------------------------------
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🌍HACK THE PLANET🌍
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[~] The config file is expected to be at "/root/.rustscan.toml"
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[!] File limit is lower than default batch size. Consider upping with --ulimit. May cause harm to sensitive servers
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[!] Your file limit is very small, which negatively impacts RustScan's speed. Use the Docker image, or up the Ulimit with '--ulimit 5000'.
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Open 10.10.193.208:22
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Open 10.10.193.208:80
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Open 10.10.193.208:8001
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Open 10.10.193.208:8000
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Open 10.10.193.208:8002
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Open 10.10.193.208:9999
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PORT STATE SERVICE REASON VERSION
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PORT STATE SERVICE REASON VERSION [96/388]
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22/tcp open ssh syn-ack ttl 63 OpenSSH 7.6p1 Ubuntu 4ubuntu0.3 (Ubuntu Linux; protocol 2.0)
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| ssh-hostkey:
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| 2048 f7:75:95:c7:6d:f4:92:a0:0e:1e:60:b8:be:4d:92:b1 (RSA)
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| ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC7FOhvQRnCoPOd/4kYKsFt1Z81Zn7/eHHCcC1aHXfWK3UskQJaeWDqPcjeXN+ceZbiyKXUBpvAIWlg5Gphn1iCJoWxsCibNzZlZczJmjM2L+
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fW/maaKRmiFL1fxxgkzNpssK3cF2dyNZ4uitwFhl5imMScEx/E1Lt86545ZxijjmlhUcbxvERh5nC+84RoIRr979qKWvOHgFyLXwOi+FGj5x1DZ0ZcmhsUORX8n9ZsqqUNM01R2MittszQr1CEa0
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QFvrRyJawV1vHerdaYKaFbwvfR2Ip9d8VI4MmhMqb9fnnwRSYGP3qDKoscJo6UF4wtIMT79/obcXP1GdvoROc7
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| 256 a2:11:fb:e8:c5:c6:f8:98:b3:f8:d3:e3:91:56:b2:34 (ECDSA)
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| ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBCSG/mKt+u+M1pEEuYBYY/LTbDOftPdV5ZBYGyVS0aF5DiRbsYQaOtswUarmEbUO05LIlSUZG6
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dK88BSm2DjnAU=
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| 256 72:19:b7:04:4c:df:18:be:6b:0f:9d:da:d5:14:68:c5 (ED25519)
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|_ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIF3y6QxJnjq+vtxnKq2LJB1EIy+RSy5rZqltZulxj6RA
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80/tcp open http syn-ack ttl 63 Apache httpd 2.4.29 ((Ubuntu))
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| http-methods:
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|_ Supported Methods: GET POST OPTIONS HEAD
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|_http-server-header: Apache/2.4.29 (Ubuntu)
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|_http-title: Apache2 Ubuntu Default Page: It works
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8000/tcp open http syn-ack ttl 63 Apache httpd 2.4.29 ((Ubuntu))
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| http-methods:
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|_ Supported Methods: GET POST
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| http-robots.txt: 1 disallowed entry
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|_/vbcms
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|_http-server-header: Apache/2.4.29 (Ubuntu)
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|_http-title: VeryBasicCMS - Home
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8001/tcp open http syn-ack ttl 63 Apache httpd 2.4.29 ((Ubuntu))
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| http-methods:
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|_ Supported Methods: GET HEAD POST OPTIONS
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|_http-server-header: Apache/2.4.29 (Ubuntu)
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| http-title: My Website
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|_Requested resource was /?page=home.php
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8002/tcp open http syn-ack ttl 63 Apache httpd 2.4.29 ((Ubuntu))
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| http-methods:
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|_ Supported Methods: GET POST
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|_http-server-header: Apache/2.4.29 (Ubuntu)
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|_http-title: Learn PHP
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9999/tcp open abyss? syn-ack ttl 63
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| fingerprint-strings:
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| FourOhFourRequest, GetRequest, HTTPOptions:
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| HTTP/1.0 200 OK
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| Date: Sat, 20 Feb 2021 19:24:58 GMT
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| Content-Length: 0
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| GenericLines, Help, Kerberos, LDAPSearchReq, LPDString, RTSPRequest, SIPOptions, SSLSessionReq, TLSSessionReq, TerminalServerCookie:
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| HTTP/1.1 400 Bad Request
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| Content-Type: text/plain; charset=utf-8
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| Connection: close
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|_ Request
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```
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### PORT 22 (SSH)
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### PORT 80 (HTTP)
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<img src="https://imgur.com/6NzfSGF.png"/>
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### PORT 8000 (HTTP)
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<img src="https://imgur.com/NSTRdGB.png"/>
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There wasn't anything on Home , About and Contact page. Running gobuster on the port 8000
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<img src="https://imgur.com/4SPnxrx.png"/>
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<img src="https://imgur.com/tlkYGye.png"/>
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But we did see an entry in `robots.txt`
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<img src="https://imgur.com/Je6sota.png"/>
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Logging in with `admin:admin`
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<img src="https://imgur.com/AGu9XCB.png"/>
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<img src="https://imgur.com/8jCnQwp.png"/>
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Here we can see these are html pages but we can include php code in between it
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<img src="https://imgur.com/jME85YI.png"/>
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<img src="https://imgur.com/qgdDnlG.png"/>
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<img src="https://imgur.com/sqf0wiE.png"/>
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And we have a RCE working so let's leverege this to get a reverse shell
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<img src="https://imgur.com/aZboei3.png"/>
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<img src="https://imgur.com/PYs4t8i.png"/>
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From the looks of it this a base64 ecoded text
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<img src="https://imgur.com/Xn3IWIM.png"/>
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Doing a `cat /etc/crontab` to list system wide crontab we see a cronjob running as root
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<img src="https://imgur.com/n8wOdhu.png"/>
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We also see `secret.txt` in `/var/www/html/topSecretPrivescMethod`
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<img src="https://imgur.com/NUNE6CP.png"/>
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Reading `/var/lib/rary` from the hints
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<img src="https://imgur.com/58iJagE.png"/>
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This was the flag that we need to enter in the correct format
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### PORT 8001 (HTTP)
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<img src="https://imgur.com/2oCczNh.png"/>
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### PORT 80002 (HTTP)
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<img src="https://imgur.com/YgI5urR.png"/>
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To get a reverse shell paste the php reverse shell without having `php` tags in it
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<img src="https://imgur.com/xvLW1bL.png"/>
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Now we can edit that script which is running in crontab
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<img src="https://imgur.com/1DPFPWc.png"/>
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To get `root.txt`
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<img src="https://imgur.com/4M8VctB.png"/>
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