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2026-05-10
JWT
Easy
Raptor Weekly 2 - ECHELON JWT 1 - 1.2 ; NOISE FLOOR
Intercepting a JWT delivered in a non-standard HTTP response header, decoding the payload to recover the flag hidden in a custom claim, and recognizing the truncated signing key that will matter again two challenges later.
web
crypto
jwt
ECHELON
2026-05-10
JWT
Medium
Raptor Weekly 2 - ECHELON JWT 2 - 2.3 ; SIGNED
Reconstructing a JWT signing secret from two hex fragments recovered across prior challenges, forging an HS256 token with elevated role claims, and submitting it to a verification endpoint to gain SECRET tier access.
web
crypto
jwt
ECHELON