Charon

Verified writeups for the Charon machine of Hack The Box

Charon

$ tldr SQLi UNION + WAF bypass → RSA crypto challenge → SUID privesc

·	·
Operating system	Linux
Difficulty	Hard
Vector	Crypto
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]

Writeups

Language	Author	Format	Link
🇪🇸 ES	S4vitar	Vídeo	Open
🇬🇧 EN	0xdf	Texto	Open
🇬🇧 EN	IppSec	Vídeo	Open

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
SQL Injection	HackTricks	Open
SQL Injection	PortSwigger	Open
SUID binaries	GTFOBins	Open

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 — Linux, Medium
• Flujab — Linux, Hard
• Phoenix — Linux, Hard
• Writer — Linux, Medium
• Dab — Linux, Hard

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Last updated: 2026-06-07