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Articles tagged with #cryptography
Description The grand hotel is hosting a conference I really want to go to, but I can't figure out how to get a VIP suite... Maybe you can take a look? Overview This challenge presents a hotel book
Description I managed to exfiltrate a highly classified, encrypted executable, but no tool I throw at it can parse it. It doesn't even have an ELF header! Fortunately, I also managed to exfiltrate th
Description Shoot, the trial on our copy of FlagFactory Pro expired right before we needed it for the CTF! Can you help? We're given a binary: ffpro Overview A 64-bit Linux binary simulates a piece
Description We intercepted a weirdly glitched file. Apparently, Julius likes to switch things up often, every 10 pixels. We're given a file: caesar1.jpg Overview A JPEG image of sheet music has bee