Offensive Security

Red Teaming, Penetration Testing and Hacking Tips and Tricks

Smashing The Stack For Fun or War-games

https://bt3gl.github.io/smashing-the-stack-for-fun-or-wargames-narnia-0-4.html

modexp

https://modexp.wordpress.com/

Hacksplaining

https://www.hacksplaining.com/lessons

Hacking Articles

http://www.hackingarticles.in/

Red Team Infrastructure Wiki

https://github.com/bluscreenofjeff/Red-Team-Infrastructure-Wiki

Alex Dib - Passing OSCP

https://scund00r.com/all/oscp/2018/02/25/passing-oscp.html

OSCP Guide

https://sushant747.gitbooks.io/total-oscp-guide/content/

Living off the land and fileless attack techniques

https://www.symantec.com/content/dam/symantec/docs/security-center/white-papers/istr-living-off-the-land-and-fileless-attack-techniques-en.pdf