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HackTheBox Environment Writeup

A walkthrough of the HackTheBox 'Cypher' machine which is medium rated linux box. This write-up covers initial access, privilege escalation, and post-exploitation techniques.

RECONNAISSANCE

NMAP

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┌──(dollarboysushil卐kali)-[~/Documents/htb-boxes/code]
└─$ nmap -sC -sV 10.129.12.135                                       
Starting Nmap 7.95 ( https://nmap.org ) at 2025-03-24 00:04 +0545
Nmap scan report for 10.129.12.135
Host is up (0.092s latency).
Not shown: 65533 closed tcp ports (reset)
PORT   STATE SERVICE VERSION
22/tcp open  ssh     OpenSSH 9.6p1 Ubuntu 3ubuntu13.8 (Ubuntu Linux; protocol 2.0)
| ssh-hostkey: 
|   256 be:68:db:82:8e:63:32:45:54:46:b7:08:7b:3b:52:b0 (ECDSA)
|_  256 e5:5b:34:f5:54:43:93:f8:7e:b6:69:4c:ac:d6:3d:23 (ED25519)
80/tcp open  http    nginx 1.24.0 (Ubuntu)
|_http-title: Did not follow redirect to http://cypher.htb/
|_http-server-header: nginx/1.24.0 (Ubuntu)
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel

Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .



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