The Complete Guide to MIFARE Classic Tool 2.3.1: Android RFID Reading and Writing
If you have a special “magic” card that supports UID writing, MCT makes the process simple:
MIFARE Classic Tool is an app for Android devices. It acts as a portable RFID reader and writer. It works with devices that have Near Field Communication (NFC) chips. mifare classic tool 2.3.1
MIFARE Classic Tool is a powerful instrument. Cloning access cards you do not own, bypassing security systems without permission, or modifying data on cards belonging to others may violate laws in your jurisdiction. Always:
on how to use the dictionary attack feature, or do you need help troubleshooting a specific error in version 2.3.1? The Complete Guide to MIFARE Classic Tool 2
: View tag data as highlighted hex, 7-bit US-ASCII, or as integers.
Check the boxes next to the key maps you want to use (e.g., std.keys and extended.keys ). MCT uses these files to guess the passwords for the card's sectors. MIFARE Classic Tool is a powerful instrument
MIFARE Classic is a hardware standard for contactless smart cards operating at a high frequency of . Developed by NXP Semiconductors, these tags are heavily used worldwide for public transit, building access control, and loyalty programs. Memory Structure
For source code and further documentation, please visit the official GitHub repository.
MCT 2.3.1 operates through the Android OS’s NFC stack, interfacing directly with ISO/IEC 14443 Type A tags. Unlike its predecessors, version 2.3.1 incorporates refined error handling and extended key diversification algorithms. The software’s core capabilities are threefold: (enumerating sectors and blocks on a card), reading (extracting encrypted data from sectors when a valid key is provided), and writing (cloning data to UID-writable tags). A significant addition in this version is the integrated nested authentication attack . This exploit leverages the linear feedback shift register (LFSR) vulnerability in the CRYPTO1 cipher. By capturing a successful authentication with one known key, MCT 2.3.1 can reverse-engineer other sector keys of the same card within seconds, a process that would take weeks using brute force on legacy hardware.