CTF Team at the University of British Columbia

Maple Bacon 1337 Challenges

Thanks for trying out this year’s 1337 challenges! Although the 1337 role is no longer obtainable, you can find all challenge files and resources below.

NOTE: All flags will begin with either the prefix maple{ or flag{.

NOTE: These are practice challenges and are not part of MapleCTF! However, they are good practice for challenges you might see during the competition.

Reversing

x86 binary

8b64240844464c614731db4331fd6681ff676c751d31fe81fd541840
1a7513c1ef106681ff6167750981fe1c1f165475014b31c040cd8090

Pwn

baby_pwn (executable)
baby_pwn.c (source)

Crypto

Stack Exchange says everyone uses AES-GCM, but I don’t need the tag so I’ll just use CTR.

gen.py
secret.enc

For complete newcomers, I would recommend giving this companion guide a read. It covers some background and gives you the gist of how this challenge is solved.

Forensics

There’s nothing here… or is there?