BSides Boston 2020

BSidesBOS2020 Logo

BsidesBOS CTF was an 8-Hour event which took place on September 26, 2020.

EZ Bake Oven

Challenge: Do you like baking? Don't leave the oven on for too long! Open the Deployment tab to start this challenge.


Challenge: Ohh no! I can't remember anything, where have I been?


Challenge: They told us the world was going to end in the year 2000! But it didn't… when will the world end? nc 31656

Spy Cam

Challenge: Oh no! I found some spyware on my laptop. Can you find out what the attacker saw?

Saving the World

Challenge: Sometimes I dream of saving the world. Saving everyone from the invisible hand, the one that brands us with an employee badge, the one the forc...

Play The Harp

Challenge: Ah yes, the beautiful harp! A family member of such a wonderful type of musical instruments!


Challenge: Always wanted to calculate HMACs on your phone? Check out our new app! It supports 6 different algorithms.


Challenge: This ZIP file is hanging out with the stars in the Milky Way! Can you find the flag?

Kiddie Pool

Challenge: Look at this new graphic design technique I learned! This is like 900% cool!!!

Fancy Caesar Cipher

Challenge: We RSA encrypted the flag, but forgot to save the private key. Is it possible to recover the flag without it?


Challenge: I found this baseball… but… it doesn't really look like a baseball?