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

# Charon

> Verified writeups for the Charon machine of Hack The Box

# Charon

<p className="machine-summary"><span className="prompt"><code>\$ tldr</code></span> SQLi UNION + WAF bypass → RSA crypto challenge → SUID privesc</p>

<div className="machine-meta">
  | ·                | ·                                                                                                                                                                                                                                                                                               |
  | ---------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
  | Operating system | Linux                                                                                                                                                                                                                                                                                           |
  | Difficulty       | Hard                                                                                                                                                                                                                                                                                            |
  | Vector           | <span className="vbadge vbadge-crypto">Crypto</span>                                                                                                                                                                                                                                            |
  | IP               | `10.10.10.31`                                                                                                                                                                                                                                                                                   |
  | Retirement date  | 2021-02-16                                                                                                                                                                                                                                                                                      |
  | Skills           | SQLI (SQL Injection) - Union Injection SQLI - WAF Bypass Cracking Hashes Uploading a file abusing a hidden property Filtering Bypass Abusing RSA - Creating a private key based on a public one Decrypting a message with the generated private key Abusing SUID Binary \[Privilege Escalation] |
</div>

## Writeups

| Language | Author      | Format | Link                                                      |
| -------- | ----------- | ------ | --------------------------------------------------------- |
| 🇪🇸 ES  | **S4vitar** | Vídeo  | [Open](https://www.youtube.com/watch?v=S1L92tszls0)       |
| 🇬🇧 EN  | **0xdf**    | Texto  | [Open](https://0xdf.gitlab.io/2021/02/16/htb-charon.html) |
| 🇬🇧 EN  | **IppSec**  | Vídeo  | [Open](https://www.youtube.com/watch?v=_csbKuOlmdE)       |

## Skill resources

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

| Skill                            | Source      | Link                                                                                         |
| -------------------------------- | ----------- | -------------------------------------------------------------------------------------------- |
| Cracking Hashes (hashcat / John) | HackTricks  | [Open](https://book.hacktricks.wiki/en/generic-methodologies-and-resources/brute-force.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)                                   |
| SUID binaries                    | GTFOBins    | [Open](https://gtfobins.github.io/#+suid)                                                    |

## Related skills worth mastering

Brute Force / Rate-Limit Bypass · Remote Code Execution (RCE) · Cross-Site Scripting (XSS) · Sudo abuse · linPEAS

## If you liked this machine, try

* [Mango](/en/htb/machines/linux/medio/mango) — Linux, Medium
* [Flujab](/en/htb/machines/linux/dificil/flujab) — Linux, Hard
* [Phoenix](/en/htb/machines/linux/dificil/phoenix) — Linux, Hard
* [Writer](/en/htb/machines/linux/medio/writer) — Linux, Medium
* [Dab](/en/htb/machines/linux/dificil/dab) — Linux, Hard

***

## 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:charon" data-giscus-lang="en" />

*Last updated: 2026-06-07*

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