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https://github.com/AbdullahRizwan101/CTF-Writeups
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54 lines
1.5 KiB
Markdown
54 lines
1.5 KiB
Markdown
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# HackMyVM-Helium
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## NMAP
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```
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Host is up (0.00019s latency).
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Not shown: 65533 closed ports
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PORT STATE SERVICE VERSION
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22/tcp open ssh OpenSSH 7.9p1 Debian 10+deb10u2 (protocol 2.0)
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| ssh-hostkey:
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| 2048 12:f6:55:5f:c6:fa:fb:14:15:ae:4a:2b:38:d8:4a:30 (RSA)
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| 256 b7:ac:87:6d:c4:f9:e3:9a:d4:6e:e0:4f:da:aa:22:20 (ECDSA)
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|_ 256 fe:e8:05:af:23:4d:3a:82:2a:64:9b:f7:35:e4:44:4a (ED25519)
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80/tcp open http nginx 1.14.2
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|_http-server-header: nginx/1.14.2
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|_http-title: RELAX
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MAC Address: 08:00:27:4C:32:E1 (Oracle VirtualBox virtual NIC)
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Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel
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Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
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Nmap done: 1 IP address (1 host up) scanned in 8.73 seconds
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```
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## PORT 80
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<img src="https://imgur.com/gzIZcvW.png"/>
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<img src="https://imgur.com/3KW7uWJ.png"/>
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If we look at the bootstrap css file
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<img src="https://imgur.com/S3y6VwI.png"/>
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On anaylzing the wav file with audactiy and adding a spectogram we can see a text
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<img src="https://imgur.com/RfQUPUe.png"/>
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Saying `dancingpassyo`
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On trying the password with the username `paul` with ssh
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<img src="https://imgur.com/1Dfj0Op.png"/>
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## Privilege Escalation
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We can check what commands can paul run as root so do `sudo -l`
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<img src="https://imgur.com/RmwIoYp.png"/>
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Seems we can run `ln` as root which is for making symlinks.We can create a binary in which we call `bash` in it and link it with the `/usr/bin/ln` binary
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<img src="https://imgur.com/wBcXuVD.png"/>
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<img src="https://imgur.com/dlNnerf.png"/>
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