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WHEELER, pt. 1 Cover Challenge

This challenge can be found on the cover of issue 6. Spot the letters in the bottom right corner.

The Mirror

The letters are printed backwards, and they read:

GURXLNRX.RL/TIVBDLOU

We can easily spot the usual pattern of TFICOMIC.IO/SOMETHING. Now we need to reverse-engineer the code to get the last part.

Using CyberChef, I try different character rotations (Caesar Cipher) without getting anywhere.

That's when I realize, the characters being printed backwards was a hint: R definitely corresponds to I (because we know the base url is tficomic.io), I is the 9th letter of the alphabet and R is the 9th letter starting from the end. Applying that logic to every letter, we get our URL, which leads us to the flag.