Our writeups for CTFs are stored here.
Cryptography
AES
July 13th, 2020
I wrote my own AES! Can you break it?
June 27th, 2020
Writing your own decryption algorithm!
Cryptography
June 27th, 2020
Writing your own decryption algorithm!
Web Exploitation
June 26th, 2020
I want to buy some of these recipes, but they are awfully expensive. Can you take a look?
Web Exploitation
June 26th, 2020
I just found a hate group targeting my favorite animal. Can you try and find their secrets? We gotta take them down!
Web Exploitation
June 26th, 2020
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!
Web Exploitation
June 26th, 2020
Request smuggling has many meanings.
Web Exploitation
June 26th, 2020
I wanted to make a website to store bits of text, but I don't have any experience with web development.
Web Exploitation
June 26th, 2020
Seeing that my last website was a success, I made a version where instead of storing text, you can make your own custom websites!
Binary Exploitation
GOT
June 26th, 2020
Kevin, teach us heap - I mean how to pop a shell with only 2 bitflips!
Web Exploitation
June 26th, 2020
My friend made a fanpage for Tux; can you steal the source code for me?
Reversing
Windows
June 26th, 2020
Windows Rev go brrrrrrrrrrrrrrr...
Web Exploitation
SQL Easy
June 26th, 2020
I made a cool login page. I bet you can't get in!
Miscellaneous
Survey Trivial
June 26th, 2020
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.
Miscellaneous
Discord Trivial
June 26th, 2020
Join the redpwnCTF discord server.
Cryptography
Goldwasser–Micali
June 26th, 2020
Secrets encrypted.
Cryptography
RC4
June 26th, 2020
I found this in-progress password manager on a dead company's website. Seems neat.
Cryptography
Easy
June 26th, 2020
The only guessy challenge in rCTF.
Web Exploitation
June 26th, 2020
It's important for public keys to be transparent.
Cryptography
Bases Easy
June 26th, 2020
Encoding something multiple times makes it exponentially more secure!