Monthly Archives: March 2024

How to use mfkey32 on ChameleonUltra devices

What’s mfkey32? MFKey32 is a technique used against Mifare Classic cards to retrieve sector data without the proper key by exploiting weaknesses in its Crypto1 encryption. It involves capturing data from card-reader interactions during two authentication attempts, then leveraging the MFKey32 algorithm to reverse-engineer the key used by the reader, ultimately revealing the original state […]