Mifare Classic Card Recovery Tool -

The primary tool for recovering, reading, and writing MIFARE Classic tags is the , available as an open-source Android App on Google Play and GitHub . For more advanced hardware-based recovery, the Proxmark3 is the industry standard . Guide to Using MIFARE Classic Tool (MCT)

MIFARE Classic cards organize data into sectors. Each sector is protected by two distinct 48-bit keys: and Key B . To read or write data, a reader must first authenticate using one of these keys.