[MITRE STEM 2015] [Crypto 100 – Gravity Falls] Write Up

Description

The only instruction we got  was a picture :

Instructions

Resolution

Thanks to our good friend big brother Google reverse image search, we found out the cypher is based on a cartoon :

Gravity_Falls

We used the correspondence table:
gravityfallsdecodeSource

The plain text message is the following :

MCA DASH B F ZERO C TWO ONE TWO SEVEN

Flag : MCA-BF0C2127

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