A Birthday Themed CTF Brought to you by the


Flags are in format: EFSC{flag}

1) Encoded Gift Tag [cryptography]

What a weird thing to write on a gift tag. Figure out what they’re trying to say!

To: Prof Dyess

From: The Cyber Titans

Happy birthday! Here's your present:

RUZTQ3tCYTVlXzY0X2lzX2JhNWVkfQ==


2) Cake Format Fiasco [file forensics]

We’re trying to serve the cake but it won’t open?! If you figure out what’s wrong with it, you can have a slice!

Download cake.docx


3) A Least Significant Hidden Gift [steganography]

I’m sure there’s something good in this present! See if you can peak inside!

Download gift_box.png


4) All Aboard for Crack Station [password cracking]

For security, passwords are stored as hashes, not in plain text. Doesn’t mean we can’t hack them though!

Can you identify and crack these hashes from a Party City data leak?

0511b8bd04eff817025381422e4850e8

ea20e1279bbe86cba2a5af1a9c5cd24e

8657266e540e57f8ac42e36b8dbac638


5) Giftception [cryptography + file forensics]

It’s a present wrapped inside another a present, there’s gotta be something REALLY cool in there. See if you can get to the center.

Download wrapped_gift.zip