Cronos

Verified writeups for the Cronos machine of Hack The Box

Cronos

$ tldr AXFR → command injection → cron job privesc

·	·
Operating system	Linux
Difficulty	Medium
Vector	Web
IP	10.10.10.13
Retirement date	2020-04-14
Skills	Domain Zone Transfer (AXFR) SQLI (Blind Time Based) - Creating a custom Python script Command Injection Abusing Cron Job [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
OS Command Injection	PortSwigger	Open
DNS zone transfer	HackTricks	Open
SQL Injection	HackTricks	Open
SQL Injection	PortSwigger	Open

Related skills worth mastering

Remote Code Execution (RCE) · Cross-Site Scripting (XSS)

If you liked this machine, try

• Scavenger — Linux, Hard
• Union — Linux, Medium
• Writer — Linux, Medium
• Fortune — Linux, Insane
• Nightmare — Linux, Insane

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Last updated: 2026-06-07