Resource Library

Curated cybersecurity resources across all topics

CTF Platform Free
OverTheWire Wargames ↗

Classic Linux and security wargames. Bandit teaches Linux CLI, Natas teaches web security, Leviathan and Narnia teach binary exploitation. SSH-based — no browser VM needed.

Tool Free
GTFOBins ↗

A curated list of Unix binaries that can bypass local security restrictions. Used for privilege escalation via SUID, sudo, capabilities, and shell escapes.

Cheat Sheet Free
Linux Command Line Cheat Sheet ↗

Quick reference for essential Linux commands: file operations, process management, networking, permissions, archiving, and text processing.

Book Free
The Linux Command Line — William Shotts (Free) ↗

A complete, freely available book covering every aspect of the Linux command line: navigation, text processing, scripting, job control, and system administration.