TryHackMe
ConvertMyVideo - TryHackMe Writeup
This room exploits an open-source Youtube video download tool using an interesting injection method. It also includes some common linux privilege escalation methods.
Ultratech - TryHackMe Writeup
You have been contracted by UltraTech. It’s a grey-box kind of assessment. The only information you have is the company's name and their server's IP address.