Extensive List of Free Labs Thanks to Joas Santos
· Attack-Defense - https://attackdefense.com
· Alert to win - https://alf.nu/alert1
· Bancocn - https://bancocn.com
· CTF Komodo Security - https://ctf.komodosec.com
· CryptoHack - https://cryptohack.org/
· CMD Challenge - https://cmdchallenge.com
· Explotation Education - https://exploit.education
· Google CTF - https://capturetheflag.withgoogle.com/
· HackTheBox - https://www.hackthebox.com
· Hackthis - https://www.hackthis.co.uk
· Hacksplaining - https://www.hacksplaining.com/lessons
· Hacker101 - https://ctf.hacker101.com
· Hacking-Lab - https://hacking-lab.com/
· HSTRIKE - https://hstrike.com
· OverTheWire - http://overthewire.org
· Practical Pentest Labs -https://www.amanhardikar.com/mindmaps/Practice.html
· Pentestlab - https://pentesterlab.com
· Hackaflag BR - https://hackaflag.com.br/
· Penetration Testing Practice Labs - https://lnkd.in/e6wVANYd
· PentestIT LAB - https://lab.pentestit.ru
· PicoCTF - https://picoctf.com
· PWNABLE - https://pwnable.kr/play.php
· Root-Me - https://www.root-me.org
· Root in Jail - http://rootinjail.com
· SmashTheStack - http://www.smashthestack.org/wargames.html
· The Cryptopals Crypto Challenges - https://cryptopals.com
· Try Hack Me - https://tryhackme.com
· Vulnhub - https://www.vulnhub.com
· W3Challs - https://w3challs.com
· WeChall - http://www.wechall.net
· Cyberdefenders - https://cyberdefenders.org/blueteam-ctf-challenges/
· LetsDefend- https://letsdefend.io/