Mifare Classic Tool 2.3.1 Jun 2026

Version 2.3.1 includes features to "brute force" missing keys if you know some of the keys on the card.

The 2.3.1 release focuses on reliability and seamless hardware abstraction. 1. Advanced Key Dictionary Management

Standard MIFARE Classic tags do not allow you to change Sector 0, Block 0 (the UID). To make a perfect clone, you need special rewriting tags known as or Chinese Magic Tags (Generation 1A) .

to brute-force or use known keys to unlock sectors. Key Features and Tools in Version 2.3.1 mifare classic tool 2.3.1

This is the most critical feature for penetration testing.

Using MCT 2.3.1 to clone a transit card for free rides, break into a building you do not own, or duplicate a hotel key without authorization is or theft of service in most jurisdictions (Computer Fraud and Abuse Act in the US; Computer Misuse Act in the UK).

: Hold the RFID card against the back of your phone. Map Sectors : Tap Start Mapping and Read Tag . Version 2

Version 2.3.1 is an older but stable version of the application. It is available from several sources:

The user interface of Mifare Classic Tool 2.3.1 is divided into several sections:

The card's memory structure is separated neatly into 16 sectors . Each sector contains exactly 4 blocks , with each block holding 16 bytes of raw hexadecimal data. Key Features and Tools in Version 2

MCT cannot execute complex cryptographic attacks like the "Darkside" or "Nested" attacks. It is a reader/writer tool. To break unknown keys, you must first sniff or crack the keys using dedicated hardware like a Proxmark3 or Flipper Zero, then import those keys into MCT. Ethical and Legal Compliance

is the gold-standard Android application for interacting with MIFARE Classic RFID tags. Developed originally by Gerhard Klostermeier, this open-source utility turns an NFC-enabled Android device into a powerful low-level security analysis tool.

MIFARE Classic Tool 2.3.1 requires an Android device with NFC hardware that supports MIFARE Classic operations. Most modern Android phones from manufacturers like Samsung, Google, OnePlus, and Xiaomi work well. However, some devices are incompatible due to their NFC controller limitations. A comprehensive list of incompatible devices is maintained on the project’s GitHub repository.

Broadcom NFC chips found in many modern smartphones (like newer Google Pixels or Samsung Galaxy devices) physically cannot interact with MIFARE Classic tags due to hardware and licensing restrictions. For MCT to work, your Android phone must feature an NXP NFC controller (common in older Nexus devices, Xiaomi phones, and select Sony models).

If you have already and encountered any errors