guest@mmr:~$ cd ./ctf
guest@mmr:~/ctf$ ls -la
total 5
-rwxr-xr-xweb-security-academy# free, the best web hacking labs -rwxr-xr-xhackthebox.com# realistic machines & challenges -rwxr-xr-xtryhackme.com# guided paths, all levels -rwxr-xr-xpentesterlab.com# exercises built around real vulns -rwxr-xr-xoverthewire.org# classic wargames, fundamentalsguest@mmr:~/ctf$