Click Htb Writeup Jun 2026

"Did it work?"

The web application appears to handle some form of data processing or user input. Digging into the source code or testing the input fields often reveals a vulnerability. In the case of Click, the focus shifts toward how the application handles requests and whether there is a way to inject commands or manipulate the backend logic.

The cursor blinked, a steady, rhythmic pulse against the stark black terminal. It was 3:00 AM, and the silence of the apartment was heavy, broken only by the low hum of the server rack in the closet. click htb writeup

Next, we access the web server by navigating to http://10.10.10.132 in our browser. The website appears to be a simple default IIS page. However, upon inspecting the page source, we find a peculiar comment:

The first step in any penetration test is understanding the target. A quick Nmap scan reveals the open ports and services running on the machine. nmap -sC -sV -oN click.nmap "Did it work

Elian took a sip of cold coffee, his eyes fixated on the line of text on his secondary monitor. He had been stuck on the machine named on Hack The Box for the better part of two days. It was rated "Medium," but for Elian, it had been a brick wall of frustration.

# The vulnerable endpoint url = "http://click.htb/stats" The cursor blinked, a steady, rhythmic pulse against

As www-data , Elian was trapped in a containerized environment. The flags weren't here. He poked around the file system, eventually stumbling upon an internal service running on 127.0.0.1 . It was the service on that odd port 8443 he’d seen earlier, inaccessible from the outside.

The script executed, imported his malicious logger, and silently changed the permissions of the bash binary.

In this scenario, investigating the local user's home directory or the application's internal database leads to credentials. With these, you can SSH into the machine as a standard user, giving you a more stable environment to work from.