Jail

Verified writeups for the Jail machine of Hack The Box

Jail

$ tldr BOF socket reuse → NFSv3 → sudo rvim → RAR + RSA crypto

·	·
Operating system	Linux
Difficulty	Insane
Vector	Binary
IP	10.10.10.34
Retirement date	2022-05-23
Skills	Code Analysis Binary Exploitation Buffer Overflow x32 - Socket Re-Use Shellcode Technique GDB Tips NFSv3 Privesc Abusing sudoers privilege (rvim command) Cracking RAR file Crypto Challenge (Playing with RsaCtfTool to get the private key)

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
Buffer Overflow (BoF / ROP)	HackTricks	Open

If you liked this machine, try

• October — Linux, Medium
• Chatterbox — Windows, Medium
• Safe — Linux, Easy
• Buff — Windows, Easy
• Ellingson — Linux, Hard

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Last updated: 2026-06-07