This is the proof of concept check out next video for the exploit

this exploit took four windows to execute but was still fairly simple 

nmap, gobuster, wpscan, php, netcat, tac, crackstation

cookie editor, rsa, ssh, cron

This is a great introduction to reverse shells! 

This is the Bounty Hacker room from tryhackme.  It is a beginner friendly hands on learning experience!