Quick

Verified writeups for the Quick machine of Hack The Box

Quick

$ tldr HTTP/3 enum → Esigate ESI injection RCE → POS print server hijack

·	·
Operating system	Linux
Difficulty	Hard
Vector	Web
IP	10.10.10.186
Retirement date	2020-08-29
Skills	HTTP/3 Enumeration Recompiling curl to accept HTTP/3 requests Information Leakage Brute force in authentication panel XSS Injection Abusing Esigate (ESI Injection - RCE) Manipulating passwords in the database Abuing POS Print Server (File Hijacking Attack)

Writeups

Language	Author	Format	Link
🇪🇸 ES	S4vitar	Vídeo	Open
🇪🇸 ES	El Pingüino de Mario	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
Information Leakage	HackTricks	Open
Brute Force / Rate-Limit Bypass	HackTricks	Open
Remote Code Execution (RCE)	HackTricks	Open
Cross-Site Scripting (XSS)	HackTricks	Open
Cross-Site Scripting (XSS)	PortSwigger	Open

Related skills worth mastering

Local File Inclusion (LFI) · Remote File Inclusion (RFI) · Shellshock (CVE-2014-6271) · SQL Injection · Server-Side Request Forgery

If you liked this machine, try

• Reel2 — Windows, Hard
• Zetta — Linux, Hard
• CTF — Linux, Insane
• Frolic — Linux, Easy
• Hawk — Linux, Medium

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Last updated: 2026-06-07