Our writeups for CTFs are stored here.
July 13th, 2020
I wrote my own AES! Can you break it?
June 27th, 2020
Writing your own decryption algorithm!
June 26th, 2020
I want to buy some of these recipes, but they are awfully expensive. Can you take a look?
I just found a hate group targeting my favorite animal. Can you try and find their secrets? We gotta take them down!
Uh oh; it looks like they already migrated to a more secure platform. Can you do your thing again? These horrible people must be stopped!
Request smuggling has many meanings.
I wanted to make a website to store bits of text, but I don't have any experience with web development.
Seeing that my last website was a success, I made a version where instead of storing text, you can make your own custom websites!
Kevin, teach us heap - I mean how to pop a shell with only 2 bitflips!
My friend made a fanpage for Tux; can you steal the source code for me?
Windows Rev go brrrrrrrrrrrrrrr...
I made a cool login page. I bet you can't get in!
We want to hear about you and your experience during this CTF! We put a ton of work into this and would really appreciate your honest feedback.
Join the redpwnCTF discord server.
I found this in-progress password manager on a dead company's website. Seems neat.
The only guessy challenge in rCTF.
It's important for public keys to be transparent.
Encoding something multiple times makes it exponentially more secure!