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 2019-10-22 03:11:19

lohcm88
Contributor
Registered: 2016-02-05
Posts: 55

New kind of 125 khz card?

Hi all.. recently i came across a new type of Low Frequency tag which I am unable to read with both pm3 or china cloner icopy.

Long story cut short... previous system was a 250 khz and i clone it using icopy with a 250 khz tag without any problem.  Recently the apartment changes it security system and I think it should be a low frequency system as the voltage drop in pm3 when I use HW Tune.

The card is both side white with number 0000200460 003,03852 printed on it and it look like an ordinary EM type of ID card.  Problem is both pm3 and cloner icopy were unable to read this card.  I even program a 125 and 250 khz card with the same exact number (0000200460 003,03852) but without success.

Is this a new kind of chip where pm3 and cloners cannot detect?  The Command lf sea u produces nothing as well..  thx for your time..

Offline

#2 2019-10-22 15:50:47

iceman
Administrator
Registered: 2013-04-25
Posts: 5,944
Website

Re: New kind of 125 khz card?

cool,
How about you save a trace and share so we can have a look at it?

data plot
lf read
data save lf_unk_200460_003_03852.pm3

If you feel the love,  https://www.patreon.com/iceman1001

modhex(hkhehghthbhudcfcdchkigiehgduiehg)

Offline

#3 2019-10-23 15:51:38

lohcm88
Contributor
Registered: 2016-02-05
Posts: 55

Re: New kind of 125 khz card?

iceman wrote:

cool,
How about you save a trace and share so we can have a look at it?

data plot
lf read
data save lf_unk_200460_003_03852.pm3

Here is the trace from another card 200302 003,03694

https://drive.google.com/file/d/1QLGgJB … sp=sharing

Last edited by lohcm88 (2019-10-23 15:53:53)

Offline

#4 2019-10-28 08:25:57

iceman
Administrator
Registered: 2013-04-25
Posts: 5,944
Website

Re: New kind of 125 khz card?

Crappy signal.  How sure are you its 125khz ?    Looks like LF but a different frequency

lf conf f 134
lf read
data save lf_134_unk_200460_003_03852.pm3

If you feel the love,  https://www.patreon.com/iceman1001

modhex(hkhehghthbhudcfcdchkigiehgduiehg)

Offline

#5 2019-12-03 13:55:06

lohcm88
Contributor
Registered: 2016-02-05
Posts: 55

Re: New kind of 125 khz card?

iceman wrote:

Crappy signal.  How sure are you its 125khz ?    Looks like LF but a different frequency

lf conf f 134
lf read
data save lf_134_unk_200460_003_03852.pm3

Ok i hv another try at another similar card (different card number) and the data look better when I read it about 2~3 cm away from proxmark.

https://drive.google.com/file/d/152Zj5I … sp=sharing

The card number of this card is 200079 003,03471

Any advise appreciated.  Thank you.

Offline

#6 2019-12-03 16:56:47

iceman
Administrator
Registered: 2013-04-25
Posts: 5,944
Website

Re: New kind of 125 khz card?

...hm...  your output from

hw status

If you feel the love,  https://www.patreon.com/iceman1001

modhex(hkhehghthbhudcfcdchkigiehgduiehg)

Offline

Board footer

Powered by FluxBB