Catch

Verified writeups for the Catch machine of Hack The Box

Catch

$ tldr APK analysis → Cachet SSTI RCE → cron job privesc

·	·
Operating system	Linux
Difficulty	Medium
Vector	Web
IP	10.10.11.150
Retirement date	2022-07-23
Skills	APK Analysis (apktool, d2j-dex2jar) JD-GUI - Code Inspection Information Leakage - Visible Token values Cachet Framework Exploitation - SQLI Let’s Chat Exploitation - Abusing API (Reading Private Messages) Cachet Framework Exploitation - Server Side Template Injection (SSTI) [RCE] 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
SSTI (Server-Side Template Injection)	PortSwigger	Open
Information Leakage	HackTricks	Open
SQL Injection	HackTricks	Open
SQL Injection	PortSwigger	Open
Remote Code Execution (RCE)	HackTricks	Open

Related skills worth mastering

Cross-Site Scripting (XSS) · Local File Inclusion (LFI) · Remote File Inclusion (RFI) · Shellshock (CVE-2014-6271)

If you liked this machine, try

• Flustered — Linux, Medium
• Validation — Linux, Easy
• Oz — Linux, Hard
• Zetta — Linux, Hard
• Cache — Linux, Medium

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Last updated: 2026-06-07