HARD CHAINED CRYPTO
Welcome, Operator
The central security vault checkpoint does not accept normal logins. It requires dual authentication proof: an administrative cookie recovered from the client access control gateway (Scenario 06), and a recovered service credential key (Scenario 07).
Challenge Objectives
- Access the vault gate at
/finale/index.html. - Present the administrative cookie recovered from Scenario 06 (
access_level=••••••••). - Supply the authenticated service password recovered from Scenario 07 (
key=•••••••••••). - Decrypt the resulting multi-byte XOR ciphertext payload using the recovered key to capture the Grand Finale flag.