Proxmark3 developers community

Research, development and trades concerning the powerful Proxmark3 device.

Remember; sharing is caring. Bring something back to the community.

"Learn the tools of the trade the hard way." +Fravia

You are not logged in.

#1 2019-11-09 09:07:56

Registered: 2018-05-13
Posts: 102

analysis of some classic Block0 data

Hi i tried to find out the valid Mifare classic Block0 data

I got this card number 12345678

and I got this valid Mifare classic Block0 data: 12345678XX880400C806002000000016

XXis from the calculation of 12345678 which is UID
My question is what are the remaing bits of 880400C806002000000016? what do these bits mean? Room Number or manufacture code?

Last edited by yukihama (2019-11-09 09:09:02)


#2 2019-11-09 09:37:00

Registered: 2013-06-04
Posts: 704

Re: analysis of some classic Block0 data

Often the next 3 bytes are SAK and ATQA. This already belongs to the manufacturer data which is the rest of block 0.


Board footer

Powered by FluxBB