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#1 2017-04-20 04:42:20

kapsolas
Contributor
Registered: 2017-04-20
Posts: 5

New to ProxMark3 RDV - Setup not working

Hi everyone,

I have read all the documentation I can find on how to setup the ProxMark3 and I am confused on what is occuring, or better yet why it is not working.

I have flashed the device with the following flash:
bootrom: / -suspect 2015-11-19
os: master/-suspect 2017-04-20

When I run hw tune, the results always return with:
Your LF antenna is marginal
Your HF antenna is unusable

Any other command that I run just won't return any information.

I have a feeling that the setup is not correct. Can anyone provide some feedback to help me understand if mysetup is correct?
Should I reflash the device with a specific firmware that is known to work better?

Thanks! Appreciate any help!

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#2 2017-04-20 05:41:01

marshmellow
Contributor
From: US
Registered: 2013-06-10
Posts: 2,302

Re: New to ProxMark3 RDV - Setup not working

where did you get the "following flash:" ?  your output does not appear to be a direct copy paste of the true output.
there isn't enough information here to really go on, could you provide more details?

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#3 2017-04-20 13:57:00

kapsolas
Contributor
Registered: 2017-04-20
Posts: 5

Re: New to ProxMark3 RDV - Setup not working

Hi marshmellow,

Please find below the additional information requested from the proxmark3 application.

output from hw version

Prox/RFID mark3 RFID instrument          
bootrom: /-suspect 2015-11-19 10:08:02
os: master/-suspect 2017-04-20 02:01:53
LF FPGA image built for 2s30vq100 on 2015/03/06 at 07:38:04
HF FPGA image built for 2s30vq100 on 2015/11/ 2 at  9: 8: 8
          
uC: AT91SAM7S512 Rev B          
Embedded Processor: ARM7TDMI          
Nonvolatile Program Memory Size: 512K bytes. Used: 191326 bytes (36). Free: 332962 bytes (64).          
Second Nonvolatile Program Memory Size: None          
Internal SRAM Size: 64K bytes          
Architecture Identifier: AT91SAM7Sxx Series          
Nonvolatile Program Memory Type: Embedded Flash Memory          
proxmark3> 

Output from hw tune

proxmark3> hw tune

Measuring antenna characteristics, please wait...#db# DownloadFPGA(len: 42096)          
          
# LF antenna:  5.64 V @   125.00 kHz          
# LF antenna:  5.36 V @   134.00 kHz          
# LF optimal:  5.64 V @    56.87 kHz          
# HF antenna:  1.77 V @    13.56 MHz          
# Your LF antenna is marginal.          
# Your HF antenna is unusable.          
Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.
          

proxmark3> 

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#4 2017-04-20 14:04:54

marshmellow
Contributor
From: US
Registered: 2013-06-10
Posts: 2,302

Re: New to ProxMark3 RDV - Setup not working

Interesting.  Well I'm sure you've already done it double and triple check your antenna connections.  It may be possible that one of them or both were damaged in shipping. If this is a recent purchase I would contact your seller.

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#5 2017-04-20 14:29:42

kapsolas
Contributor
Registered: 2017-04-20
Posts: 5

Re: New to ProxMark3 RDV - Setup not working

Yes, I just received the proxmark3 yesterday. I will contact the seller. I did check the connections and even swapped the wires to make sure it wasn't a bad wire. Not sure what else checking the wires can entail.

What should the expected behavior have been? what should I have seen at this point?

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#6 2017-04-20 14:37:49

marshmellow
Contributor
From: US
Registered: 2013-06-10
Posts: 2,302

Re: New to ProxMark3 RDV - Setup not working

I have to double-check but I believe you're running a current firmware.  Your antenna voltage value should be much higher over 20 Volts for low frequency and around 15 for high frequency

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#7 2017-04-20 14:38:50

marshmellow
Contributor
From: US
Registered: 2013-06-10
Posts: 2,302

Re: New to ProxMark3 RDV - Setup not working

Are there tags on the antennas when you ran the command?

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#8 2017-04-20 14:45:28

iceman
Administrator
Registered: 2013-04-25
Posts: 9,497
Website

Re: New to ProxMark3 RDV - Setup not working

Can you post a picture of you device.  And recheck your antenna connections.

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#9 2017-04-20 18:55:22

kapsolas
Contributor
Registered: 2017-04-20
Posts: 5

Re: New to ProxMark3 RDV - Setup not working

Thanks for your support! Things seem to be working better now.

What i did was the following: disconnected all antennas and wires from the main board and reconnected them for the 100th time smile
I also reflashed the OS on the board.

I can now tune with no issues. I even read a HID card.

Thanks for you help!

Next if anyone has a good tutorial on how to use the device in PC free mode it would be appreciated.

Ultimately, I have been asked to evaluate how easy it is to clone an HID card for work and evaluate how an SEOS card would behave. From my reading it seems it should not be too hard to attack an HID card, but we still have to prove it within our environment.

Does any documentation exist around SEOS cards?
Any documentation that i can focus on to try to achieve this would really help.

Thanks!

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