If one key is known, a "nested" attack can derive all other keys on the card.
To interface with the card, you need a reader capable of low-level radio frequency (RF) manipulation. mifare classic card recovery tool
A user-friendly mobile app that allows you to read, write, and analyze cards if the keys are already known or use common default lists. Step-by-Step Recovery Process If one key is known, a "nested" attack
Using a carries significant responsibility. These tools should only be used in the following scenarios: If one key is known