UIUCTF 2023

Mom said we had food at home

Author: Anakin

In any good project, you split the work into smaller tasks...

Author: Anakin

I gave you an easier project last time. This one is sure to break your grade!

Author: Anakin

The all revealing Oracle may be revealing a little too much...

Author: Anakin

"We've been monitoring our adversaries' communication channels, but they encrypt their data with XOR one-time pads! However, we hear rumors that they're reusing the pads...\n\nEnclosed are three encrypted messages. Our mole overheard the plaintext of message 2. Given this information, can you break the enemy's encryption and get the plaintext of the other messages?"

Author: Pomona

I've come up with a winning idea to make it big in the Prodigy and Hotmail scenes (or at least make your email widespread)!

Author: Emma Hartman

All these poisonous snakes keep biting me. Good think I remembered to bring restrictedpython to keep me safe!

Author: Pete Stenger

Check out our new super fast calculator!

This challenge is sponsored by Battelle.

Author: Minh

David is on a trip to collect and document some of the world’s greatest artifacts. He is looking for a coveted bronze statue of the “Excellent One” in New York City. What museum is this located at? The flag format is the location name in lowercase, separated by underscores. For example: `uiuctf{statue_of_liberty}

hints:

• The first two characters of the statue begin with "ma"
• It is very prevalent in southern Asia

Author: David

New York City is known for its sprawling subway system. However, none of that would have been possible without modern earth-moving equipment. Find where the first ever shovel was used to start digging the subway. Flag format should be in uiuctf{name_of_museum}

hints:

• well known for their baby blue colorings

Author: David

Jonah Explorer, world renowned, recently landed in the city of Chicago, so you fly there to try and catch him. He was spotted at a joyful Italian restaurant in West Loop. You miss him narrowly but find out that he uses a well known social network and and loves documenting his travels and reviewing his food. Find his online profile.

hints:

• what does joy translate to?

Author: David

After dinner, Jonah took notes into an online notebook and pushed his changes there. His usernames have been relatively consistent but what country is he going to next? Flag should be in format uiuctf{country_name}. Make sure to use only lowercase.

hints:

• forks, trees, pushing, and pulling

Author: David

Jonah posted a picture online with random things on a table. Can you find out what zip code he is located in? Flag format should be uiuctf{zipcode}, ex: uiuctf{12345}.

hints:

• I think code is cool

Note: To view the images you can open up desktop and run this command:

firefox imagename

Author: David

Jonah offered a reward to whoever can find out what hotel he is staying in. Based on the past information (chals), can you find out what the hotel he stayed at was? Flag should be uiuctf{hotel_name_inn}

hints:

• what does joy translate to?

Author: David