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bettse / seader

Interface with a SAM from the Flipper Zero over UART
https://lab.flipper.net/apps/seader
GNU General Public License v3.0
109 stars 3 forks source link

Better understanding purpose of this flipper app #5

Closed ezhang7423 closed 10 months ago

ezhang7423 commented 10 months ago

Hi there,

Thank you for your hard work on this repository. I would like to better understand what a SAM is and what capabilities this repo gives if I were to buy the hardware linked on the readme. I am especially curious about whether I would be able to emulate a HID iClass SE.

Thanks again for the time and consideration.

bettse commented 10 months ago

A sam is a way of storing secrets (https://en.wikipedia.org/wiki/Secure_access_module). You can see a description of what Seader does in the app catalog: https://lab.flipper.net/apps/seader. It does not provide any emulation.

ezhang7423 commented 10 months ago

I see, thank you very much for the info. Looking at your description: "Allows for reading credential from HID iClass, iClass SE, Desfire EV1, and Seos. Credentials can be saved in an agnostic format, or as various Flipper formats (Prox, MFC, iClass, iClass SR), depending on the original type. Requires addon: UART to mini-SIM adapter and HID SAM."

If I did want to perform emulation, would I be able to save the keys on a HID iClass SE card into another format, and emulate in other applications? If not, are there any other paths you would recommend looking into?

bettse commented 10 months ago

would I be able to save the keys on a HID iClass SE card into another format,

Thats what it says :+1:. This is called a "downgrade attack". Whether it works or not will depend on the configuration of the reader you're emulating to.