Beginner’s Guide to Conquering Connected on Hack the Box

Key Highlights

• This guide gives beginners a clear path for using the Hack The Box box platform with Connected.
• You will learn how to download the ovpn file and start an openvpn client the right way.
• The walkthrough covers vpn setup, machine access, and basic enumeration habits for a Linux target.
• It also explains when to open a new terminal tab after the initialization sequence completes.
• You will see a simple workflow from recon to privilege escalation checks and common troubleshooting.
• To Access the Complete non-public writeup, Please CLICK HERE
• To Access a Short-cut Solution, Please CLICK HERE
• To Access Every Script Used in this Writeup, Please CLICK HERE
• To Access explanation of the non-public writeup, Please CLICK HERE

Introduction

If you want a simple starting point for Connected, this guide is built for you. Connected is presented as an Easy Linux target on the Hack The Box box platform, so it works well for beginners who want to practice a clean workflow. You will focus on getting access to the lab, confirming your connection, and moving through enumeration, service review, and privilege escalation checks in a steady way without rushing or guessing.

Overview of the Connected Machine on Hack The Box

Connected HTB should be approached like any other Linux machine on the box platform. Your first job is not exploitation. It is stable access. That means choosing the right vpn server, downloading the correct ovpn connection pack, and making sure your terminal shows a completed initialization sequence.

Once access is ready, think of the machine as a server you study in layers. You identify the ip address, test reachability, review exposed services, and then move into focused analysis. That basic pattern keeps your work organized and prepares you for the sections below.

 NEXT: Mastering Checkpoint: Beginner’s Guide from Hack The Box

To Access the Complete non-public writeup, Please CLICK HERE

To Access a Short-cut Solution, Please CLICK HERE

To Access Every Script Used in this Writeup, Please CLICK HERE

To Access explanation of the non-public writeup, Please CLICK HERE

Initial Foothold

Attack Chain Summary

[Target: 10.129.8.113] 
       │
       ▼ (Port 80: FreePBX 16.0.40.7)
[CVE-2025-57819 Exploit] SQLi -> Malicious Cron Job -> Webshell
       │
       ▼ (Reverse Shell)
[User: user] -> Read /home/user/user.txt
       │
       ▼ (Privilege Escalation)
[Abuse Writable File] Append Payload to file
       │
       ▼ (Trigger Mechanism)
[incron Watcher] touch file
       │
       ▼ (Root Shell)
[User: root] -> Read /root/root.txt

To Access the Complete non-public writeup, Please CLICK HERE

To Access a Short-cut Solution, Please CLICK HERE

To Access Every Script Used in this Writeup, Please CLICK HERE

To Access explanation of the non-public writeup, Please CLICK HERE

Initial Access (User Flag)

Host Configuration & Scanning

Bash

echo "10.129.x.x connected.htb" | sudo tee -a /etc/hosts
nmap -sC -sV -p 80 connected.htb

• Result: Target runs FreePBX 16.0.40.7, which is vulnerable to unauthenticated SQL injection via /admin/ajax.php (CVE-2025-57819).

Exploit Execution

Run the watchTowr Python PoC script against the target to inject a malicious cron job into the FreePBX database, which drops a PHP webshell:

Bash

python3 cve-2025-57819.py -H http://connected.htb/

Catch the Shell

1. Start an attacker listener
2. Trigger the reverse shell via the webshell
3. Upgrade the shell and grab the user flag

Privilege Escalation (Root Flag)

Enumeration & Misconfiguration Discovery

Checking writable files and automation rules reveals a flaw in the service management:

Bash

# 1. Identify writable configuration file
# 2. Check incron configuration for root-run triggers

• Flaw: Writing to file forces root to execute the script, which sources and processes the writable file.

Root Exploitation

1. Start a second attacker listener
2. Append a reverse shell payload to the writable config
3. Trigger the file

Retrieve Flag

Catch the incoming connection on port 4446 and collect the root flag:

Bash

id && cat /root/root.txt

To Access the Complete non-public writeup, Please CLICK HERE

To Access a Short-cut Solution, Please CLICK HERE

To Access Every Script Used in this Writeup, Please CLICK HERE

To Access explanation of the non-public writeup, Please CLICK HERE

What Makes Connected an Easy Linux Box

For beginners, an easy Linux machine usually means the learning path is straightforward. You can build good habits without getting buried under too many moving parts. Connected fits that style well because the process starts with platform basics, then moves into careful enumeration and service review on the target server.

A simple approach helps you stay in control. You connect, verify access, and then inspect what the machine exposes before trying anything aggressive. That structure matters more than speed.

• Start with a stable vpn session so your scans and browser requests reach Connected consistently.
• Use a basic module of recon first, such as host reachability, open ports, and visible service behavior.
• Keep notes on each server response so your next step is based on evidence, not assumption.

That is why easy boxes are useful. They teach method, not chaos.

Understanding the Objectives of Connected HTB Writeup

Before you touch the machine, set your objectives. In a beginner-friendly Connected HTB writeup, the first goal is access to the lab network. The second is solid enumeration. The third is using what you learn to move toward exploitation in a controlled way.

Next, you want to identify what the target is offering. That includes ports, service type, and whether you need a hostname entry in your local setup. If a page or login prompt appears, note it carefully. Small details often shape your next move.

Your final objective is to move from findings to action. That may include testing visible functionality, checking whether credentials appear during your review, and then validating whether those credentials work for login or ssh. When user access is achieved, you switch your mindset to privilege escalation and root-level checks.

Preparing to Start Connected Hack The Box

Preparation is where most beginner mistakes are avoided. On Hack The Box, you need an account, a working internet connection, and the latest OpenVPN setup. A Linux VM is strongly recommended, even though it is not strictly required.

From there, choose the correct vpn server for your region and access level, then download the ovpn file. Keep it in your downloads folder so you can launch it from a terminal without confusion. The next two sections walk through that setup in a simple order.

Creating Your Hack The Box Account

Everything starts with your account on the box platform. If you are a beginner, keep this part simple. Make your account, save your username and password securely, and get familiar with the Machines area from the dashboard. That is where you will manage access and find the machine lineup.

After logging in, go to Labs and then Machines. This page shows active machines, retired machines, filters, and machine details. It also gives you the connection controls needed to begin. Spend a minute learning the layout before you start clicking through options.

One detail matters a lot here. Free users and VIP users do not interact with machines in exactly the same way. Free account users only need a connected vpn for active machines, while VIP users may need to start or stop an instance. Knowing that difference saves time and avoids confusion.

Setting Up the VPN Connection for Connected Machine

Now set up access to Connected. Click the Connect to HTB option, choose Machines, select the right access level and region, then download your ovpn connection pack. You can pick TCP or UDP depending on your network. If your connection is unstable, TCP can be the safer choice.

Open a terminal, move to your downloads folder, and start OpenVPN with the downloaded file. Keep that terminal running. Once you see the initialization sequence completed message, open a new terminal tab and test the machine ip address with a ping or your first scan.

• Use only one connection method at a time. Running Pwnbox and a local openvpn session together can create routing errors.
• If the ovpn file seems broken, switch servers and download it again to regenerate it.
• Stay on the closest vpn server when possible for better responsiveness.

PREV: Mastering DevHub: Beginner’s Guide from Hack The Box

Step-by-Step Guide for Beginners

Here is the practical flow. Beginners do best when they move in a fixed order instead of jumping between tools. For Connected, start with access confirmation, then perform enumeration, review services, attempt entry based on what you discover, and finish with privilege escalation checks.

That step-by-step structure answers the usual beginner question: where do I start? You start by learning what the machine exposes. Then you let those findings guide every later action. The next sections break that process into four manageable steps.

Step 1: Enumerating Open Ports on Connected

Begin with the basics. After your vpn is up and the machine ip address responds, run nmap against the target. This gives you the first reliable picture of open ports and helps you decide whether you are dealing with ssh, http, or another visible service. For beginners, this is the core enumeration module.

Do not rush past the results. Open ports are not just numbers. They tell you where to look next and which tool fits best. If you see web traffic, move into browser and directory checks. If you see remote shell access, think carefully about authentication and credentials.

Keep this stage clean and repeatable.

Step 2: Initial Footprinting and Service Analysis

With the first scan done, shift into footprinting. If an http service is exposed, open it in a browser and look at what is presented by default. Check whether the machine expects a hostname entry. Many Hack The Box machines require adding a host entry before the site behaves correctly.

At this stage, examine visible content and structure. Review any forms, login pages, and obvious functionality. If there is a web application, pay attention to paths, naming, and anything that suggests hidden content in a directory or subarea. Small clues often matter more than flashy output.

Service analysis should stay tied to what you observed in enumeration. If the machine exposes ssh, keep that in mind for later access. If it exposes only web content, focus your effort there first. The goal is not to try everything. It is to build a useful footprint from real responses.

Step 3: Exploiting Vulnerabilities and Gaining User Access

This is the point where your earlier notes matter. The compiled platform guidance does not provide a service-specific exploit chain for Connected, so your exploitation should follow only from the weakness you confirmed during footprinting. If a page exposes a flaw or reveals credentials, test that path carefully and keep your actions focused.

User access often comes from simple validation of what you already found. A discovered login pair may work on a web panel, and in some cases the same credentials may also open ssh. Test each route one at a time so you know exactly what succeeded.

• Use the service you identified, not a random tool list, as the basis for exploitation.
• If credentials appear, verify them first against the visible login or ssh prompt.
• Once user access is gained, document the account and switch into local Linux review.

That sets you up for the final stage.

Step 4: Privilege Escalation to Root on Connected Hack The Box

After landing as a low-privileged user, your task changes. You are no longer trying to get in. You are trying to understand the Linux environment from the inside. Review the current user context, inspect important paths, and check whether any directory or file stands out during your local survey.

Privilege escalation should be methodical. Look for weak permissions, exposed data, or system details that connect back to what you saw during enumeration. If the target stores a password carelessly or leaves a helpful script in an accessible location, that can become your route toward root.

Stay disciplined here. Do not assume every hint leads somewhere. Validate each finding, keep notes on what you check, and escalate only when the machine gives you a real reason. That approach is slower, but it teaches better habits and makes your final root path easier to explain.

Common Challenges and Troubleshooting Tips

Most problems with Connected happen before exploitation begins. Beginners usually run into vpn connectivity issues, a broken ovpn file, routing problems from using two access methods, or a machine that needs a hostname entry before the web service works as expected.

Other issues appear during enumeration. A scan may fail because the vpn terminal was closed, the wrong server was selected, or the machine instance needs attention. Good troubleshooting means checking your setup first, then checking your commands, and only then blaming the target.

Fixing VPN Connectivity Issues

If you cannot reach Connected, return to the vpn first. OpenVPN access is the foundation of everything else. Make sure your openvpn client is still running and that the original terminal has not been closed. You should have seen the initialization sequence complete before starting any scan or browser check.

Then review your setup choices. A wrong region, a bad server selection, or an invalid ovpn file can all stop you from reaching the machine. If needed, regenerate the file by switching servers and downloading it again. Also remember that using Pwnbox and local vpn access together can cause routing trouble.

• Confirm the initialization sequence completed message appears in the terminal.
• Keep the vpn process open while you work in another tab or window.
• Regenerate the ovpn file if the connection pack seems invalid or unstable.

These checks solve many beginner problems quickly.

Resolving Problems During Enumeration and Exploitation

When enumeration gives weak or confusing results, slow down and test your assumptions. Make sure you are scanning the right ip address and that your vpn session is still active. If a web page does not load properly, ask whether the machine expects a local host entry before the service works.

Sometimes the issue is the machine state rather than your process. Machines can get stuck or services can fail after another user changes something. In those cases, a reset may be necessary. That is part of normal troubleshooting on the platform, not a sign that you did something wrong.

During exploitation, avoid changing several variables at once. If you test credentials, note where you found them and which login point accepted them. If something fails, go back to the evidence from enumeration. That habit keeps your work organized and helps you recover from dead ends faster.

Conclusion

In conclusion, conquering the Connected machine on Hack The Box is an exciting journey for beginners looking to enhance their hacking skills. By following the steps outlined in this guide, you’ll not only familiarize yourself with essential tools and techniques but also gain confidence in your abilities as you navigate through common challenges. Remember, every expert was once a beginner, so don’t get discouraged by obstacles along the way. Embrace the learning process, and soon enough, you’ll find yourself mastering various aspects of ethical hacking. If you found this guide helpful, subscribe for more tips and resources to further your cybersecurity journey!

Frequently Asked Questions

What tools are best for enumerating the Connected HTB box?

Start with openvpn so your lab access is stable, then use nmap as your main enumeration tool. A simple tcp scan gives you the open ports and service clues you need. After that, choose the next module based on what appears, such as web review for http or login testing for ssh.

How do I escalate privileges on the Connected machine?

After gaining user access, perform local Linux checks carefully. Review the current account, inspect useful paths, and look for exposed password data, weak permissions, or a helpful directory. Privilege escalation to root should come from evidence you find on the machine, not from blind guessing.

What should I do if I can’t connect to the Connected machine?

Check that your openvpn client is still running and that the initialization sequence completed successfully. Confirm you selected the correct vpn server and downloaded a valid ovpn file. Keep the vpn terminal open, then use another tab to test the machine. If needed, regenerate the connection pack.

Where can I find other Connected Hack The Box writeups and walkthroughs?

On Hack The Box, walkthroughs are provided for only retired machines. When Connected appears in the retired section, you can review the official and user-submitted writeup material there. Use those resources to compare your method, learn a new module, or understand how others approached the server.