Hey everyone!
It's a bit late, but I wrote one web challenge for the 2021 HackTheBox University CTF Qualifiers. It was a very difficult challenge that only ended up getting 1 solve during the competition, but since then it's been released on the main HTB platform. I was able to make a guest writeup for the HTB blog about my general approach to solving the challenge which you can find here.
If you're interested, feel free to check it out and let me know if you have any questions!
Bryce