> ## Documentation Index
> Fetch the complete documentation index at: https://rootea.es/llms.txt
> Use this file to discover all available pages before exploring further.

# Advent of Cyber 3 (2021)

> Get started with Cyber Security in 25 Days - Learn the basics by doing a new, beginner friendly security challenge every day leading up to Christmas.

# Advent of Cyber 3 (2021)

<p className="machine-summary"><span className="prompt"><code>\$ tldr</code></span> TryHackMe · Walkthrough · Easy</p>

<div className="machine-meta">
  | ·             | ·                                                 |
  | ------------- | ------------------------------------------------- |
  | Platform      | TryHackMe                                         |
  | Type          | Walkthrough                                       |
  | Difficulty    | <span className="dbadge dbadge-easy">EASY</span>  |
  | Access        | 🟢 Free                                           |
  | Average time  | 1440 min                                          |
  | Users         | 81.597                                            |
  | Official room | [Open](https://tryhackme.com/room/adventofcyber3) |
</div>

## Description

Get started with Cyber Security in 25 Days - Learn the basics by doing a new, beginner friendly security challenge every day leading up to Christmas.

## Solve the room

| Language | Author        | Format      | Link                                              |
| -------- | ------------- | ----------- | ------------------------------------------------- |
| 🇬🇧 EN  | **TryHackMe** | Lab oficial | [Open](https://tryhackme.com/room/adventofcyber3) |

## Resources by skill

| Skill                          | Source               | Link                                                                                                   |
| ------------------------------ | -------------------- | ------------------------------------------------------------------------------------------------------ |
| Remote Code Execution (RCE)    | HackTricks           | [Open](https://book.hacktricks.wiki/en/pentesting-web/command-injection.html)                          |
| Authentication Vulnerabilities | PortSwigger          | [Open](https://portswigger.net/web-security/authentication)                                            |
| Default credentials            | HackTricks           | [Open](https://book.hacktricks.wiki/en/generic-methodologies-and-resources/brute-force.html)           |
| Directory / Path Traversal     | PortSwigger          | [Open](https://portswigger.net/web-security/file-path-traversal)                                       |
| SQL Injection                  | HackTricks           | [Open](https://book.hacktricks.wiki/en/pentesting-web/sql-injection/index.html)                        |
| SQL Injection                  | PortSwigger          | [Open](https://portswigger.net/web-security/sql-injection)                                             |
| AS-REP Roasting                | HackTricks           | [Open](https://book.hacktricks.wiki/en/windows-hardening/active-directory-methodology/asreproast.html) |
| Directory fuzzing              | HackTricks           | [Open](https://book.hacktricks.wiki/en/network-services-pentesting/pentesting-web/index.html)          |
| Access Control / IDOR          | PortSwigger          | [Open](https://portswigger.net/web-security/access-control)                                            |
| Local File Inclusion (LFI)     | HackTricks           | [Open](https://book.hacktricks.wiki/en/pentesting-web/file-inclusion/index.html)                       |
| Local File Inclusion (LFI)     | PayloadsAllTheThings | [Open](https://github.com/swisskyrepo/PayloadsAllTheThings/tree/master/File%20Inclusion)               |

## Related skills

[Remote Code Execution (RCE)](/en/skills/rce) · [Authentication Vulnerabilities](/en/skills/authentication) · [Default credentials](/en/skills/default-creds) · [Directory / Path Traversal](/en/skills/directory-traversal) · [SQL Injection](/en/skills/sqli) · [AS-REP Roasting](/en/skills/asreproast) · [Directory fuzzing](/en/skills/fuzzing) · [Access Control / IDOR](/en/skills/access-control)

***

## Comments & tips

Solved this room a different way? Share it here — comments live in [GitHub Discussions](https://github.com/FFuson/HTB_Writeups/discussions).

<div className="rootea-giscus-wrap" data-giscus-term="thm:tryhackme-adventofcyber3" data-giscus-lang="en" />

*Last updated: 2026-05-09*

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