Astronaut from ProvingGround Practice, is a warmup machine that has a short exploitation path. Rooting the box requires a known exploit and an simple privledege escalation. As always, good enumeration is key.

Beep from Hackthebox, is a easy machine that multiple exploitation paths. The first path we will take is direct to root and involves a little enumeration, identifying an exploit and a few good guesses. The second path, will involve examining a second exploit that does not work in its default configuration. A key piece of information is required for the exploit to be successful and return a reverse shell. From there the privilege escalation is straightforward to escalate to the root user.

Bashed from Hackthebox, is a fairly easy machine without too many rabbit holes. Exploitation involves performing good enumeration, not overlooking the quick wins, a bit of curiosity. Overall its a good box for and serves as a good reminder not to over complicate it.