Sink

Verified writeups for the Sink machine of Hack The Box

Sink

$ tldr HTTP request smuggling → AWS KMS + Secrets Manager decrypt

·	·
Operating system	Linux
Difficulty	Insane
Vector	Linux privesc
IP	10.10.10.225
Retirement date	2021-09-18
Skills	HTTP Request Smuggling Exploitation (Leak Admin Cookie) Cookie Hijacking Information Leakage AWS Enumeration AWS Secrets Manager AWS Key_management Enumeration AWS KMS Decrypting File

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
HTTP Request Smuggling	PortSwigger	Open
Information Leakage	HackTricks	Open

If you liked this machine, try

• Admirer — Linux, Easy
• Haystack — Linux, Easy
• Luke — Linux, Medium
• SneakyMailer — Linux, Medium
• Jerry — Windows, Easy

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Last updated: 2026-06-15