Challenge category:
Binary Exploitation Cryptography Forensics Miscellaneous Networks Open-Source Intelligence Radio Frequency Reverse Engineering Web Exploitation Welcome
Baby Charge
50 Points

For your first assignment, break ChaCha20!

By: sera

guess the password lol

By: skat
68 Points

Hash the world

By: sera

I've found this secret communication system running on a server. Unfortunately it uses AES so there's not much I can do.

By: lambda
454 Points

ECDSA Private Key Recovery

By: sera

A very festive key exchange I found

By: sera

RC4 isn't safe, but good thing I'm not reusing the rc4 key!


You may need to run your script more than once if you're sure it's correct

By: nope