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For a while i was stumped. I split the ciphertext into two, took every other character, did weird xor, base64 decoding, taking every other nibble, taking every other bit - no dice.
Eventually, I decided to think more into the challenge title. They wouldn't put it in morse code for no reason, right? I began to look up special morse code ciphers, and then I thought.. a half is a fraction, right?
Fractionated morse code.
Paste in the ciphertext to a fractionated morse code decoder and you'll get the string RTCPTW0GALLONSOFH4LFMAK3WH0LEM1LK E. I think the E is either a mistake or weirdness with the site I used. Anyways, turn the rtcp into lowercase and wrap the rest in curly brackets to get your golden flag.


Last modified 3yr ago