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

# CTF

> Verified writeups for the CTF machine of Hack The Box

# CTF

<p className="machine-summary"><span className="prompt"><code>\$ tldr</code></span> LDAP injection → OTP seed → 7za symlink privesc</p>

<div className="machine-meta">
  | ·                | ·                                                                                                                                                                                                                                                                                                           |
  | ---------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
  | Operating system | Linux                                                                                                                                                                                                                                                                                                       |
  | Difficulty       | Insane                                                                                                                                                                                                                                                                                                      |
  | Vector           | <span className="vbadge vbadge-ad">Active Directory</span>                                                                                                                                                                                                                                                  |
  | IP               | `10.10.10.122`                                                                                                                                                                                                                                                                                              |
  | Retirement date  | 2019-07-20                                                                                                                                                                                                                                                                                                  |
  | Skills           | LDAP Injection LDAP Injection - Discovering valid usernames LDAP Injection - Attribute Brute Force \[Discovering valid LDAP fields] LDAP Injection - Obtaining OTP Seed Generating One-Time Password (OTP) \[stoken] Second Order Ldap Injection Abusing backup - 7za Symbolic Links (Privilege Escalation) |
</div>

## Writeups

| Language | Author                   | Format | Link                                                   |
| -------- | ------------------------ | ------ | ------------------------------------------------------ |
| 🇪🇸 ES  | **S4vitar**              | Vídeo  | [Open](https://www.youtube.com/watch?v=LWh6unoFu8I)    |
| 🇪🇸 ES  | **El Pingüino de Mario** | Vídeo  | [Open](https://www.youtube.com/watch?v=lbrs2-D57hA)    |
| 🇬🇧 EN  | **0xdf**                 | Texto  | [Open](https://0xdf.gitlab.io/2019/07/20/htb-ctf.html) |
| 🇬🇧 EN  | **IppSec**               | Vídeo  | [Open](https://www.youtube.com/watch?v=51JQg202csw)    |

## Skill resources

Curated documentation for each technique listed in the *Skills* column above. Sources: HackTricks, GTFOBins, PortSwigger, etc.

| Skill                           | Source     | Link                                                                                         |
| ------------------------------- | ---------- | -------------------------------------------------------------------------------------------- |
| Brute Force / Rate-Limit Bypass | HackTricks | [Open](https://book.hacktricks.wiki/en/generic-methodologies-and-resources/brute-force.html) |
| Remote Code Execution (RCE)     | HackTricks | [Open](https://book.hacktricks.wiki/en/pentesting-web/command-injection.html)                |

## Related skills worth mastering

Local File Inclusion (LFI) · Remote File Inclusion (RFI) · Shellshock (CVE-2014-6271)

## If you liked this machine, try

* [Hawk](/en/htb/machines/linux/medio/hawk) — Linux, Medium
* [Monteverde](/en/htb/machines/windows/medio/monteverde) — Windows, Medium
* [Reel2](/en/htb/machines/windows/dificil/reel2) — Windows, Hard
* [Altered](/en/htb/machines/linux/dificil/altered) — Linux, Hard
* [Chaos](/en/htb/machines/linux/medio/chaos) — Linux, Medium

***

## Comments & tips

Did the official writeup not work? Found a smarter trick? Share it here — comments live in [GitHub Discussions](https://github.com/FFuson/HTB_Writeups/discussions).

<div className="rootea-giscus-wrap" data-giscus-term="machine:ctf" data-giscus-lang="en" />

*Last updated: 2026-06-07*

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