Description EasyCTF is one of the largest student-run high school cybersecurity events. It took place on Fri. 10/02/2018 until Sun. 20/02/2018. 1790 teams competed in the event.
Description She taught us so much… tribute
Description It seems we’ve intercepted 2 strings that were both encrypted with what looks like OTP! Is it possible to decrypt them? c1 = 38445d4e5311544249005351535f005d5d0c575b5e4f481155504e495740145f4c505c5c0e196044454817564d4e12515a5f4f12465c4a45431245430050154b4d4d415c560c4f54144440415f595845494c125953575513454e11525e484550424941595b5a4b c2 = 3343464b415550424b415551454b00405b4553135e5f00455f540c535750464954154a5852505a4b00455f5458004b5f430c575b58550c4e5444545e0056405d5f53101055404155145d5f0053565f59524c54574f46416c5854416e525e11506f485206554e51
Description We had a flag, but lost it in a mess of alphabet soup! Can you help us find it? Connect to the server via nc c1.easyctf.com 12484.
Description Bob is extremely paranoid, so he decided that just one RSA encryption is not enough. Before sending his message to Alice, he forced her to create 5 public keys so he could encrypt his message 5 times! Show him that he still is not secure… Here are the 5 public keys that Bob used, […]