Teacher

Verified writeups for the Teacher machine of Hack The Box

Teacher

$ tldr Moodle math formula RCE → DB hash crack → cron privesc

·	·
Operating system	Linux
Difficulty	Easy
Vector	Linux privesc
IP	10.10.10.153
Retirement date	2019-04-20
Skills	Information Leakage Abusing Moodle - Login BruteForce (Wfuzz) Moodle Exploitation - Code Injection (Abusing Math formulas in Quiz component) [RCE] Database Enumeration Cracking Hashes Abusing Cron Job [Privilege Escalation]

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
Cracking Hashes (hashcat / John)	HackTricks	Open
Directory fuzzing	HackTricks	Open
Remote Code Execution (RCE)	HackTricks	Open

Related skills worth mastering

Brute Force / Rate-Limit Bypass · Local File Inclusion (LFI) · Remote File Inclusion (RFI) · Shellshock (CVE-2014-6271)

If you liked this machine, try

• Jewel — Linux, Medium
• Bart — Windows, Medium
• Hackback — Windows, Insane
• Worker — Windows, Medium
• Frolic — Linux, Easy

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Comments & tips

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Last updated: 2026-07-13