Hack The Box
Hack into live lab machines and capture the flags
Hack The Box gives you vulnerable machines and challenges to break into. You connect to its lab network, find a weakness in a target, and work your way to the flags. Machines come in many difficulty levels, attack paths and operating systems, and new ones replace old ones over time.
Freemium · Login needed · Browser · Intermediate
About Hack The Box
It trains practical offensive security: scanning, web attacks, privilege escalation and more. Starting Point machines come with write-ups for newer players, but most of the platform suits people who already know some Linux and networking.
You need a free account. Free players get the current active machines and a small set of retired ones. A paid VIP plan unlocks the full retired library. There is also a separate Academy with courses and CTF events.
On Breakpoint since 23 Oct 2026.