MIFARE Classic Tool (MCT) version 2.3.1 is an open-source Android application designed for low-level interaction with MIFARE Classic RFID tags. Released around October 2020, this version serves as a stable point in the tool's history for reading, writing, and analyzing tags using a device's built-in NFC controller. Core Features of MCT 2.3.1
: Not all Android phones have NFC chips capable of interacting with MIFARE Classic technology (some manufacturers, like Google in newer Pixels, have removed the necessary support).
: Not all Android phones can use MCT. The phone's NFC chip must be manufactured by mifare classic tool 2.3.1
Version 2.3.1 includes features to "brute force" missing keys if you know some of the keys on the card.
MIFARE Classic is an older technology (13.56 MHz) now considered cryptographically broken MIFARE Classic Tool (MCT) version 2
The tool acts as a portable reader/writer that allows users to: Read and Write
To give you a better guide, what are you trying to do with the tool? Read data? Change a card's ID? Also, do you know if the tag is a MIFARE Classic 1K or 4K ? modernize UI incremental
MIFARE Classic Tool 2.3.1 is neither a hacker’s weapon nor a simple toy; it is a reflection of technological reality. By democratizing access to NFC cryptanalysis, it has exposed the fragility of millions of legacy access points. For the security community, MCT serves as a cost-effective vulnerability scanner. For the end-user, it is a wake-up call: physical access control built on MIFARE Classic is a procedural deterrent, not a cryptographic fortress. As long as landlords and facility managers delay upgrades to modern encrypted chips, MCT 2.3.1 will remain the definitive proof that convenience, when welded to obsolete cryptography, is merely an illusion of safety.