droberin / mfkey32v2

mfkey32v2 mifare classic nonce to key calculator

Mfkey32 v2

			equip paypal: [email protected]	bettse paypal: [email protected]	Discord

Mfkey32v2 extracts keys from nonces collected during the authentication process. These nonces can be collected by emulating the credential to allow the reader to begin despensing the necessary information to begin extraction.

Acknowledgements

• Mfkey Base Code
• Bettse for assisting in development

Requirements

GCC for compiling C (deb) make for utilising the makefile. build-essential contains both of these for you to use

• sudo apt install build-essential

(For compiling on windows you'll need a C compiler or use MINGW to create a virtual environment to use GCC)

Compilation

1. Before compiling make sure your gcc is present and up to date
2. Download code

• git clone https://github.com/equipter/mfkey32v2

3. Navigate into repo directory

• cd mfkey32v2/

4. Compile code with make

• make mfkey32v2

(if make is for some reason non cooperative you can manually compile with gcc using this command gcc mfkey32v2.c include/crypto1.c include/crypto01.c include/bucketsort.c -o mfkey32v2 -Iinclude

Standalone Usage

command syntax for mfkey32v2 is ./mfkey32v2 <uid> <nt> <nr_0> <ar_0> <nt1> <nr_1> <ar_1>

FlipperZero Usage/Examples

if you've come from the flipper mfkey32v2 logging, instructions for your command structuring is below: if you arent comfortable or capable of running mfkey32v2 by yourself. Message your log output to bettse or equip on discord.

1. On your FZ navigate to settings an enable debug.
2. Then on log level, adjust to Debug
3. Scan your Mifare Classic and begin read mifare classic special action (NOTE: you do not need to have found any keys you just need have a base .nfc file from the output)
4. Save your credential on the flipper and begin the card emulation
5. open your Flipper CLI instructions for CLI link to webcli
6. start log
7. while still emulating the UID, approach your flipperzero to the reader
8. your CLI should output logs see below for an example. find the lines like this

70795 [D][MfClassic]: 939be0d5 keyA block 3 nt/nr/ar: 4e70d691 b3a576be 02c1559b
77521 [D][MfClassic]: 939be0d5 keyA block 3 nt/nr/ar: c6efb126 d24dd966 03fc7386

now, on your external device where you have downloaded and compiled mfkey32v2

run ./mfkey32v2 with parameters like such ./mfkey32v2 [uid] [topline log] [bottomline log]

example: UID 939be0d5

your command should look like this: ./mfkey32v2 939be0d5 4e70d691 b3a576be 02c1559b c6efb126 d24dd966 03fc7386

your key should be output out like so Found Key: [a0a1a2a3a4a5]

your keyA for Sector 3 is: a0a1a2a3a4a5

Used By

This project is used by the following Repositories:

• FlipperZero Offical firmware
• RogueMaster FlipperZero Firmware
• Credited in DJsime Awesome-Flipperzero

Support

For support, Message Equip on discord Equip#1515 or join The discord server Link