%hackers ALL=(mahesh:mahesh) NOPASSWD:/usr/bin/cat /home/mahesh/Mahesh\\ Cyber\\ Security\\ Notes
(user host=(user:group) tag:commands )
Basics

Send files from attacker to victim :
Reverse & Bind Shells :
Hashes :
Math tools :
Crontabs :
RSA
Basic payloads
Privilege escalation Linux
Privilege escalation WinDows
XSS
NoSQL
GDB
Docker