May 2012 archive

Russian Spy in Santa Barbara

Last few months I have spent in Boston and recently had an opportunity to come to awesome Santa Barbara. Santa Barbara is a motherland not only of the longest (or one of the longest) an American television soap opera, which was very well known in Russia in 90s, but also University of California Santa Barbara (UCSB).

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SIMD [250] (Pirating)

After examining some code retrieved by our operative we are unsure whether it was written by an evil genius or a google employee. We will let you decide. Summary: linux x64 binary, obfuscated xor

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PlaidCTF 2012 – RSA [200] (Password Guessing)

We recently intercepted a plethora of robot transmissions but they are all encrypted with some strange scheme we just can’t quite figure out. Can you crack it? Summary: small public exponent: 3

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PlaidCTF 2012 – Encryption Service [300] (Password Guessing)

We found the source code for this robot encryption service, except the key was redacted from it. The service is currently running at 23.21.15.166:4433 Summary: IV predict, byte-by-byte bruteforce

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PlaidCTF 2012 – Nuclear Launch Detected [150] (Password Guessing)

Our spies intercepted communications and a file between 5 of the top 10 robo-generals and their nuclear bomb server. We must recover the final launch code from the 5 robo-general’s secret codes, so we can stop the detonation! Summary: Shamir’s Secret Sharing

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PlaidCTF 2012 – Format [99] (Pwnables)

Up on a hill, far away, sits the robot king of old. While he was once great, he recently has seemed to just offer simple challenges. Vanquish him and bring honor to your team! Summary: rand guessing, format string exploitation 

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