def __init__(self): # Demo cache (real tool would use large DB) self.demo_cache = "$1$cisco$SJ5x7k9LxPq9xM3lq9xM/.": "cisco123", "$1$admin$3XJ5k9LxPq9xM3lq9xM/.": "admin123", "$1$secret$VJ5x7k9LxPq9xM3lq9xM/.": "secretpass",

JTR will attempt to crack the password using a brute-force or dictionary-based attack. If the password is weak or a common password, JTR may be able to crack it.

If you cannot crack the hash and are locked out of the device, you must perform a physical password recovery: Connect via Console Cable Power cycle the device. Break signal (Ctrl+Break) during boot to enter ROMMON mode. Change the Configuration Register (usually to ) to ignore the startup config.

If you have the hash (e.g., $1$v9H1$9vM8... ) and need the plaintext, you have three primary options: 1. Online Decryptors (Fastest)