Python Script (Des Talk) for Proxmark3

[vepr]

I’ve been working on a Python script that interfaces with the Proxmark. My goal was to create something that allows you to easily manipulate data on DESFire chips. It should work via USB, Bluetooth, and TCP on Linux and Android.

I hope this tool is useful. I’m not experienced in writing code that enables DESFire to interface directly with card readers, so using the Proxmark was the next best option. Let me know if you come across any weird issues. I’ll update it with more functionality in the future.

https://github.com/trigat/DES_Talk/

des_talk.py (18.8 KB)

This script allows you to manipulate DESFire applications and files, all within a simple terminal UI.

[Iceman]

Nice one!

Looking forward to see PR to the pm3 repo.
If you hurry up it will be in the latest release which I scheduled for today…

[vepr]

Cool, I’ll work on that right now.

[Iceman]

and I was just about to start making the release…

ok I wait for it

[vepr]

I submitted it. I updated the code so that it works in and outside of the pm3 client.

[Iceman]

Merged!

Great!

[Pilgrimsmaster]

@vepr
Just making sure you see this

xDF3 Now Available!

Finally, another x-series DESFire offering. This one has been has been an uphill battle the whole way–from supply chain hell to an arduous manufacturing process. But it’s here. While the EV3 added in some great new features, the only thing the majority of you do with DESFires is throw big ol’ VCard with a picture on it Amal’s favorite new features: SUN Feature The “SUN” feature in MIFARE DESFire EV3 stands for “Secure Unique NFC” and provides a more secure way to maintain data confid…

[vepr]

I added options for changing the PICC and application master key. You can also set up file restrictions. I hope this assists in managing your xDF3 and flexDF2 implants. (Use a test card first.)

[Alask1970]

@vepr

I’ve been working on a Python script that interfaces with the Proxmark. My goal was to create something that allows you to easily manipulate data on DESFire chips. It should work via USB, Bluetooth, and TCP on Linux and Android.

I hope this tool is useful. I’m not experienced in writing code that enables DESFire to interface directly with card readers, so using the Proxmark was the next best option. Let me know if you come across any weird issues. I’ll update it with more functionality in the future. If anyone needs help or consultation on the Python side of the project, there are specialist Python development companies - https://www.cogniteq.com/python-development-company that do this kind of integration and can assist with architecture, secure key storage, and cross‑platform support.

Using Proxmark as an interface for DESFire is a good idea for cross-platform compatibility (USB/BT/TCP). Testing should only be done on proprietary cards or with the owner’s explicit permission.
Separate the transport layer from the APDU logic, log frames with the option to disable logging, and don’t store keys in plaintext (use encrypted storage).
For Bluetooth/TCP, a secure channel is required; add timeouts, retries, and authentication for TCP.
On Android, consider USB-OTG permissions and power saving; abstract hardware access.
It’s useful to have a “simulator” mode for testing and a “read-only” option for securely testing commands.