from Hacker News

Finnish Defence Forces' Cyber Challenge

by mdf on 7/16/15, 3:08 PM with 24 comments

  • by brunnsbe on 7/16/15, 3:12 PM

    In Finland we have a mandatory army service, this is the test you need to take and send in your answer before 20th of July if you want to apply for the army's cyber security division. More info here in Finnish: http://erityistehtavat.puolustusvoimat.fi

  • by sampo on 7/16/15, 5:11 PM

  • by jakozaur on 7/16/15, 4:28 PM

    Spoiler alert! Answers below:

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    Ad 1. Someone tries to exploit Internet Explorer. You see a command line which is subprocess of web browser (unlikely normal).

    Ad 2. a) 16 days ~= (31337 4) / (700 * 109 * 3600 * 24) b) 10 days ~= 95 9 / (700 * 10 9 * 3600 * 24)

    Ad 3. Lorem~Ipsum (Base64)

    Ad 4. Yes. One of the programs guess the same as random, the other guess the opposite of random.

    Ad 5. QWErty

  • by bryondowd on 7/16/15, 5:36 PM

    Anyone get a solution to 7 that doesn't involve a whole lot of steps? I did it in 44 steps, with the same 4 step combo being repeated 10 times in a row to work down to 0.3 liters.

  • by green7ea on 7/16/15, 5:15 PM

    That is pretty cool. I liked q9 since they named the characters after the RSA creators (Ron Rivest, Adi Shamir, Leonard Adleman) and the question is most likely modular exponentiation.

  • by bagosm on 7/16/15, 4:26 PM

    Lorem~Ipsum

    )87*;+xorXOR