CSAW CTF Qualification Round 2017

Another Xor - Crypto [100 pts] [Not Solved]

Receiving a python script that encrypts a string using a user-chosen key, and an encrypted message- try to get the flag.

648B
Open
Another Xor

I really want to try this one and solve it. Started in a competition but didn't know where to go.

Almost Xor - Crypto [200 pts] [Not Solved]

Can you decode this ciphertext? 809fdd88dafa96e3ee60c8f179f2d88990ef4fe3e252ccf462deae51872673dcd34cc9f55380cb86951b8be3d8429839

694B
Open
Almost Xor

Using the hex above and python file to get a solution.

SCV - Pwn [100 pts] [Not Solved]

Pwn SCV

SCV is too hungry to mine the minerals. Can you give him some food?

nc pwn.chal.csaw.io 3764

752KB
archive
Open
SCV

I am just going to guess because it deals with food, it will be a buffer overflow.

Pilot - Pwn [75 pts] [Not Solved]

Pwn pilot

Can I take your order?

nc pwn.chal.csaw.io 8464

3KB
Open
Pilot

Low points so if you need one to start on I would say this one

Auir - Pwn [200 pts] [Not Solved]

At long last, we stand at the threshold of destiny. For today, we will restore the glory of our legacy. Today, we will retake what we have lost and reclaim our homeworld. -Artanis-

nc pwn.chal.csaw.io 7713

757KB
Open
Auir

Write solution here

Zone - Pwn [300 pts] [Not Solved]

758KB
Open
Zone

Going to start with a hint that it is a heap-based challenge.

FIREWALL - Pwn [400 pts] [Not Solved]

32KB
Open
Firewall

This problem is an exe file which means it is a window executable file. What a joy.

Minesweeper - Pwn [500 pts] [Not Solved]

Minesweeper nc pwn.chal.csaw.io 7478

8KB
Open
Minesweeper

I am going to guess it is going to need coding to complete a game or cheat the game. That or shell coding, not too sure at first glance. I only say that because of the point value at 500.

tableEZ - Rev [100 pts] [Not Solved]

4KB
Open
TableEZ

100 pts. If only I knew how to reverse engineer. I am guessing from tables it is referring to mapping.

bananaScript - Rev [450 pts] [Not Solved]

Not too sure how to Interpret this, the lab member who wrote this "forgot" to write any documentation. This shit, and him, is bananas. B, A-N-A-N-A-S.

37KB
Open
Banana Script

Write a solution if I ever attempt it

Gopherz - Rev [350 pts] [Not Solved]

gopher://reversing.chal.csaw.io:7070

2MB
Open
Gopherz

Write solution here if possible without nc into it.

Grump Check - Rev [Problem Not Found]

Hey, I'm Grump!

nc reversing.chal.csaw.io 1930

2MB
Open
Grump Check

Prophecy - Rev [200 pts] [Not Solved]

The prophecy is more important than either of us! Reveal its secrets, Zeratul! The future rests on it!" -Karass-

12KB
Open
Prophecy

I don't know what to think about the problem.

Realism- Rev [400 pts] [Not Solved]

766B
Open
Realism

Realism. The Fact of reality.

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