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Comprehensive collection of CTF challenges, solutions, and insights.


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Dragon Hunt - Records 07 & 08: Synister & Hallow

Dragon Hunt Records 07 and 08. Reversing a Go client to recover the SYNR/3 wire format and shared secret, then chaining three state-machine bugs into the sanctum; and forging a Hallow token to land a stored XSS that captures the Professor's password.

Raptor Weekly 2 - ECHELON Crypto 3 - 5.1 ; ECHELON

Assembling three named artifacts recovered across five prior challenges, a signing key exfiltrated in four fragments, a C2 handshake key, and a certificate-derived access key. Then computing their HMAC-SHA256 combination to authenticate to the CODEWORD tier.