Find the flag data Summary: cube attack + recover python’s MersenneTwister state + leak 320/520 LSBs of one of the primes
Although it seems like The Plague’s messaging service is secure, there are bound to be bugs in any 20th century crypto system. We’ve recovered a version of the block cipher The Plague implemented. Use their online encryptor tool, at 18.104.22.168:8193, to break the cipher and figure out Plague’s secret plans. NOTE: When the service sends …
The Plague is building an army of evil hackers, and they are starting off by teaching them python with this simple service. Maybe if you could get full access to this system, at 22.214.171.124:9990, you would be able to find out more about The Plague’s evil plans. Code: (can be run locally with $ socat …
Our archaeologists recovered a dusty and corrupted old hard drive used by The Plague in his trips into the past. It contains a private key, but this has long since been lost to bitrot. Can you recover the full key from the little information we have recovered?
we hooked up a power meter to this encryption box. we don’t know the key. that’s what we want to know. you can encrypt any string of 8 characters on the service http://126.96.36.199:6969/string_to_encrypt encrypt.asm chall source (released after ctf)
□ description ========================================== OS : Ubuntu 13.10 x86 IP : 188.8.131.52 / TCP 8888 http://184.108.40.206/files/angry_doraemon_c927b1681064f78612ce78f6b93c14d9 ========================================== □ number of solvers : 57 □ breakthrough by 1 : More Smoked Leet Chicken (02/23 06:16) 2 : ppp (02/23 06:22) 3 : stratumauhuur (02/23 06:28) Binary
□ description ========================================== ssh firstname.lastname@example.org / ExtremelyDangerousGuest ssh email@example.com / ExtremelyDangerousGuest ========================================== □ number of solvers : 15 □ breakthrough by 1 : More Smoked Leet Chicken (02/23 02:38) 2 : Hexcellents (02/23 02:42) 3 : ppp (02/23 03:16) Binary
BREW’r’Y (Category: Crypto) Author(s): dwuid Finally, the robots managed to sneak into one of our breweries. I guess I won’t have to explain how bad that really is. That darn non-physical ones even shutdown our login system. Shiny thing, advanced technology, all based on fingerprints. Been secure as hell. If only it was running. Well, …