Valentine

Verified writeups for the Valentine machine of Hack The Box

Valentine

$ tldr Heartbleed key leak → tmux socket → Dirty Cow privesc

·	·
Operating system	Linux
Difficulty	Easy
Vector	Linux privesc
IP	10.10.10.79
Retirement date	2018-07-28
Skills	SSL Heartbleed Exploitation Cracking Hashes Tmux Socket File Session [Privilege Escalation] Linux Kernel 2.6.22 < 3.9 - Dirty Cow PTRACE_POKEDATA Race Condition 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
Race Conditions	PortSwigger	Open

Related skills worth mastering

Brute Force / Rate-Limit Bypass

If you liked this machine, try

• Tenet — Linux, Medium
• Toby — Linux, Insane
• Arctic — Windows, Easy
• Delivery — Linux, Easy
• Charon — Linux, Hard

---

Comments & tips

Did the official writeup not work? Found a smarter trick? Share it here — comments live in GitHub Discussions.

Last updated: 2026-06-07