2.3.1 | Mifare Classic Tool

The MIFARE Classic technology, which uses the proprietary stream cipher, has known cryptographic weaknesses. The "Standard Nested Attack" and the more powerful "Hardnested Attack" can recover unknown keys from a card, especially if at least one key is already known. This makes cards using this technology, which are still in widespread use globally, vulnerable to cloning and data manipulation.

At its core, MCT allows you to read the entire contents of a MIFARE Classic tag. The app uses a dictionary-based approach to authentication: you provide a file containing known keys (like FFFFFFFFFFFF or A0A1A2A3A4A5 ), and MCT attempts to authenticate to each sector using those keys. Once authenticated, you can save a complete dump of the tag’s data to your phone for safekeeping. mifare classic tool 2.3.1