Here is a curated list of resources that I have found helpful.
Offensive Security
General
- HackTricks – a very handy online book of tricks that will help you with pentesting, CTFs, forensics and more
- CyberChef – A simple, intuitive web app for analysing and decoding data without having to deal with complex tools or programming languages
Windows Privilege Escalation
- HackTricks guide for Windows PrivEsc
Linux Privilege Escalation
- GTFOBins – a curated list of Unix binaries that can be exploited by an attacker to bypass local security restrictions.
Tech & Cyber Security 