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

# Union

> Writeups verificados de la máquina Union de Hack The Box

# Union

<p className="machine-summary"><span className="prompt"><code>\$ tldr</code></span> SQLi UNION + X-Forwarded-For RCE → sudo privesc</p>

<div className="machine-meta">
  | ·                 | ·                                                                                                                                                                 |
  | ----------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------- |
  | Sistema operativo | Linux                                                                                                                                                             |
  | Dificultad        | Medio                                                                                                                                                             |
  | Vector            | <span className="vbadge vbadge-web">Web</span>                                                                                                                    |
  | IP                | `10.10.11.128`                                                                                                                                                    |
  | Fecha de retirada | 2021-11-22                                                                                                                                                        |
  | Skills            | SQLI (SQL Injection) - UNION Injection SQLI - Read Files HTTP Header Command Injection - X-FORWARDED-FOR \[RCE] Abusing sudoers privilege \[Privilege Escalation] |
</div>

## Writeups

| Idioma  | Autor                    | Formato | Enlace                                                    |
| ------- | ------------------------ | ------- | --------------------------------------------------------- |
| 🇪🇸 ES | **S4vitar**              | Vídeo   | [Abrir](https://www.youtube.com/watch?v=i2aHMXFb1Yk)      |
| 🇪🇸 ES | **El Pingüino de Mario** | Vídeo   | [Abrir](https://www.youtube.com/watch?v=qLeeLRn9Z78)      |
| 🇬🇧 EN | **0xdf**                 | Texto   | [Abrir](https://0xdf.gitlab.io/2021/11/22/htb-union.html) |
| 🇬🇧 EN | **IppSec**               | Vídeo   | [Abrir](https://www.youtube.com/watch?v=z5pdizHDvt8)      |

## Recursos por skill

Documentación curada para cada técnica que aparece en la columna *Skills* de arriba. Fuentes: HackTricks, GTFOBins, PortSwigger, etc.

| Skill                       | Fuente      | Enlace                                                                           |
| --------------------------- | ----------- | -------------------------------------------------------------------------------- |
| OS Command Injection        | PortSwigger | [Abrir](https://portswigger.net/web-security/os-command-injection)               |
| SQL Injection               | HackTricks  | [Abrir](https://book.hacktricks.wiki/en/pentesting-web/sql-injection/index.html) |
| SQL Injection               | PortSwigger | [Abrir](https://portswigger.net/web-security/sql-injection)                      |
| Remote Code Execution (RCE) | HackTricks  | [Abrir](https://book.hacktricks.wiki/en/pentesting-web/command-injection.html)   |

## Skills relacionadas que conviene dominar

Cross-Site Scripting (XSS) · Local File Inclusion (LFI) · Remote File Inclusion (RFI) · Shellshock (CVE-2014-6271)

## Si te gustó esta máquina, prueba

* [Europa](/htb/machines/linux/medio/europa) — Linux, Medio
* [Bastard](/htb/machines/windows/medio/bastard) — Windows, Medio
* [Nightmare](/htb/machines/linux/insano/nightmare) — Linux, Insano
* [Cronos](/htb/machines/linux/medio/cronos) — Linux, Medio
* [Doctor](/htb/machines/linux/facil/doctor) — Linux, Fácil

***

## Comentarios y truquillos

¿Algo no funcionó del writeup oficial? ¿Has encontrado un truco mejor? Compártelo aquí — los comentarios viven en [GitHub Discussions](https://github.com/FFuson/HTB_Writeups/discussions).

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*Última actualización: 2026-06-07*

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