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#1 2014-01-15 18:43:56

skappy
Contributor
Registered: 2014-01-13
Posts: 91

Newbie question about Mifare classic cloning opportunity

Dear All,

May I ask you some information concerning the possibility of Mifare classic cloning please ? I'm just discovering the world of RFID and I'm wondering if it would be possible, thanks to a device such as the Proxmark 3 to clone a mifare classic rfid sticker please ?

I've use various android tools such as NFCTagInfo and Mifare Classic tool. Thanks to them, i know that sticker is a Mifare classic 1K with UID[4] : b00812df. I've tried to display the hex content of the tag and except the sector 0 (it starts with b00812df75880400c205000000000013 instead of 0) , all others sectors consists in a 0 serie and then ffffffffffffff078069ffffffffffff but sectors 8,9,10,11,12,13,14 are 'read failed!' Sector 15 is the same as the sector at the beginning.

Do you think that using the proxmark 3 and an uid changeable card will allow me to copy the rfid sticker please ?

Thank you very much for your kindness and your patience.

Have a nice day

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#2 2014-01-15 20:06:01

Neuer_User
Contributor
Registered: 2013-03-26
Posts: 88

Re: Newbie question about Mifare classic cloning opportunity

You don't need the Proxmark for this. It is pretty expensive. A simple reader that supports libnfc suffices.

You would need to install libnfc, libfreefare and mfoc. You also need UID changeable cards (E. G. from xfpga).

Then you can start cloning.

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#3 2014-01-16 08:06:00

skappy
Contributor
Registered: 2014-01-13
Posts: 91

Re: Newbie question about Mifare classic cloning opportunity

Hi,
Thank you very much for your answer.
In order to not make mistake when buying the device, may I ask you what would be, according to you, the best choice for such a libnfc compatible reader please ?
Thank you very much for your help .
Have a great day

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#4 2014-01-16 08:51:59

skappy
Contributor
Registered: 2014-01-13
Posts: 91

Re: Newbie question about Mifare classic cloning opportunity

Hi again,

Sorry but I've forget to ask you if the "read fail! " sectors would cause problem during the cloning process ?

Thank you once again

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#5 2014-01-16 08:55:50

Neuer_User
Contributor
Registered: 2013-03-26
Posts: 88

Re: Newbie question about Mifare classic cloning opportunity

There are many usable devices. Have a look at libnfc.org for a list of known supported devices.

The read fail means that the sector is encrypted and thus probably holds information in it. The encryption has been cracked a long time ago. The mentioned program "mfoc" is able to break the encryption and show you the keys and the content. With this info the card can be fully cloned onto a UID changeable card (sometimes called "Magic card).

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#6 2014-01-16 15:12:23

skappy
Contributor
Registered: 2014-01-13
Posts: 91

Re: Newbie question about Mifare classic cloning opportunity

That's perfect
Thank you very much for your help
Have a nice day

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#7 2014-01-16 15:23:38

skappy
Contributor
Registered: 2014-01-13
Posts: 91

Re: Newbie question about Mifare classic cloning opportunity

As usual i've forgot to ask one last thing ...
Do you think that the proxmark 3 could do the job ?
I'm ready to invest in a generalistic tool in order to be able to do further investigation in the RFID field ...
Thanks and sorry for disturbing you ...

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#8 2014-01-16 18:14:42

Neuer_User
Contributor
Registered: 2013-03-26
Posts: 88

Re: Newbie question about Mifare classic cloning opportunity

I'm not so firm yet with the proxmark. I think, it can be done with the proxmark, yes. However, the firmware is still WIP, so there are quite a lot of bug left in. The libnfc method should work (at least it did with both of my readers and with all mifare classic cards I have).

Additionally, the Proxmark tool is not exactly cheap (around 200 €). Normal NFC readers (compatible with libnfc) only cost 30-40€.

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