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

# Catch

> Verified writeups for the Catch machine of Hack The Box

# Catch

<p className="machine-summary"><span className="prompt"><code>\$ tldr</code></span> APK analysis → Cachet SSTI RCE → cron job privesc</p>

<div className="machine-meta">
  | ·                | ·                                                                                                                                                                                                                                                                                                                                   |
  | ---------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
  | Operating system | Linux                                                                                                                                                                                                                                                                                                                               |
  | Difficulty       | Medium                                                                                                                                                                                                                                                                                                                              |
  | Vector           | <span className="vbadge vbadge-web">Web</span>                                                                                                                                                                                                                                                                                      |
  | IP               | `10.10.11.150`                                                                                                                                                                                                                                                                                                                      |
  | Retirement date  | 2022-07-23                                                                                                                                                                                                                                                                                                                          |
  | Skills           | APK Analysis (apktool, d2j-dex2jar) JD-GUI - Code Inspection Information Leakage - Visible Token values Cachet Framework Exploitation - SQLI Let's Chat Exploitation - Abusing API (Reading Private Messages) Cachet Framework Exploitation - Server Side Template Injection (SSTI) \[RCE] Abusing Cron Job \[Privilege Escalation] |
</div>

## Writeups

| Language | Author      | Format | Link                                                     |
| -------- | ----------- | ------ | -------------------------------------------------------- |
| 🇪🇸 ES  | **S4vitar** | Vídeo  | [Open](https://www.youtube.com/watch?v=A6oVNwawRzM)      |
| 🇬🇧 EN  | **0xdf**    | Texto  | [Open](https://0xdf.gitlab.io/2022/07/23/htb-catch.html) |
| 🇬🇧 EN  | **IppSec**  | Vídeo  | [Open](https://www.youtube.com/watch?v=XAZI361XgRU)      |

## Skill resources

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

| Skill                                 | Source      | Link                                                                            |
| ------------------------------------- | ----------- | ------------------------------------------------------------------------------- |
| SSTI (Server-Side Template Injection) | PortSwigger | [Open](https://portswigger.net/web-security/server-side-template-injection)     |
| Information Leakage                   | HackTricks  | [Open](https://book.hacktricks.wiki/en/pentesting-web/information-leak.html)    |
| 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)                      |
| Remote Code Execution (RCE)           | HackTricks  | [Open](https://book.hacktricks.wiki/en/pentesting-web/command-injection.html)   |

## Related skills worth mastering

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

## If you liked this machine, try

* [Flustered](/en/htb/machines/linux/medio/flustered) — Linux, Medium
* [Validation](/en/htb/machines/linux/facil/validation) — Linux, Easy
* [Oz](/en/htb/machines/linux/dificil/oz) — Linux, Hard
* [Zetta](/en/htb/machines/linux/dificil/zetta) — Linux, Hard
* [Cache](/en/htb/machines/linux/medio/cache) — 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:catch" data-giscus-lang="en" />

*Last updated: 2026-06-07*

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