Proxmark3 community

Pouet36

Contributor

Registered: 2020-06-30

Posts: 3

Unrecognized tag by Proxmark

Hi !

After playing for months with ACR122U and mifare cards, i have now a new tag in hands .. first try with ACR122U, no answer at all.. so i decided to buy a cheap proxmark3 RDV2 copy on a well-known chinese shop hopping it could detect it .. but no result neither.

I tried "hw tune l" and "hw tune h" but nothing revelant.

The tag is a new Coges key ( not the "Mykey" version ).

I opened up the key in half to gather more information from the chip but i only found a little circuit protected by a thin layer of plastic.

https://ibb.co/NVyjngy

Do you know that ? Any information about that ?

For the moment the only thoughts i have, would be to find the right frequence to communicate with the tag .. but i really don't have any idea for where to start .. any help ?

Last edited by Pouet36 (2020-06-30 22:58:52)

iceman

Administrator

Registered: 2013-04-25

Posts: 9,538

Website

Re: Unrecognized tag by Proxmark

...sounds like cashless payment system from Coges...   One google search away.
https://www.coges.eu/tipo-producto/cashless-products/

The old thread from 2012 found here http://www.proxmark.org/forum/viewtopic.php?id=1227 ,
says its 14B sri.

Try the 14b commands?

hf 14b srix*

Pouet36

Contributor

Registered: 2020-06-30

Posts: 3

Re: Unrecognized tag by Proxmark

Yep it's coges cashless payment card but not the mykey version.

I tried the "hb 14b srix4kread" command and it's working !! Thank you

I'm not experienced with proxmark commands, so i can read the dump but need to see if it's as simple for writing into the tag.

Anyway, thank you !