General Information

Section Description
Target IP 172.17.0.2
Target Host Unknown
OS Linux
Kernel Version Unknown
Web Application/Sercvice Apache httpd 2.4.41 (Ubuntu)
Application Version Apache 2.4.41
Open Ports 22 (SSH),80/tcp (HTTP)
Test Methodology Black-box
Test Date 7/27/2026

Reconnaissance

An nmap scan was performed to identify open ports and surfaces

nmap -sC -sV 172.17.0.2

image.png

Open Ports:

Upon accessing the site, a static page is displayed with the title The Walking Dead - CTF .

URL -> <http://172.17.0.2>

image.png

Reviewing the page's source code reveals a hidden link to a panel:

<ahref="hidden/.shell.php">Access Panel</a>

Gobuster also performs brute-force attacks on directories and files:

gobuster dir -u <http://172.17.0.2:80> \
  -w /usr/share/seclists/Discovery/Web-Content/common.txt \
  -x html,zip,php,txt \
  -b 404 -t 60

image.png

Among the resources found, the following stand out:

Resource Code Comment
/index.html 200 Homepage
/backup.txt 200 Exposed file
/hidden/ 200 Hidden directory

The hidden link points to: