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DOJO Challenge #24 Winners!

ID: 8184d6fe-7c7d-5ce9-86dd-a2f766b276fa

STIX ID: report--8184d6fe-7c7d-5ce9-86dd-a2f766b276fa

Feed Name: YesWeHack Blog

Date Published: 2023-06-19

Date Updated: 2026-07-04

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A detailed write-up for the #24 DOJO Challenge that explains how a JavaScript routine encrypts input by mapping characters through a 95-character alphabet, multiplying indexes by 1337 modulo 95, then base64-encoding and reversing the result. The author demonstrates two decryption approaches — computing the modular inverse of 1337 mod 95 to reverse the transformation, and building a direct lookup table — and uses them to recover the challenge flag.

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