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