RFID with the Proxmark3

Connecting to the Proxmark3

Plug in the Proxmark3 and:

sudo dmesg | grep -i USB

to check that it is installed

Using the Proxmark 3

Indroducing the Proxmark3 RDV4

Then you can start proxmark with

proxmark3 /dev/ttyACM0

Have a play with the following commands:

[usb] pm3 --> hw status
[usb] pm3 --> hw version
[usb] pm3 --> hw tune

Run the following to make sure your card is prepared:

[usb] pm3 --> script run init_rdv4

The following command upgrades your device sim module firmware. Don't not turn off your device during the execution of this command!! Even its a quite fast command you should be warned. You may brick it if you interrupt it.

[usb] pm3 --> smart upgrade -f /usr/local/share/proxmark3/firmware/sim011.bin

To get an overview of the available commands for LF RFID and HF RFID:

[usb] pm3 --> lf 
[usb] pm3 --> hf

To search quickly for known LF or HF tags:

[usb] pm3 --> lf search
[usb] pm3 --> hf search

An easy approach is to:

hf mf autopwn

Tune for LF and HF

Move the card around and watch for the voltage to drop

If you are having trouble getting a read try

lf tune --mix

OR

hf tune --mix

Here you are looking for the card to "couple". So the lower the voltage drops the more the RFID card is drawing from the system and the better the read you will get.

HF Mifare

High Frequency capability

High Frequency Mifare cards are also super common. You should be able to detect one with the standard:

hf search

If you find a tag record what sort of tag you think it could be. Try just typing:

hf

This should reveal all the different types of cards that can be read. Try to correlate the previous info from hf search against the info that you see in the image to the right. You could now try a:

hf 14a info

If that reveals that it is a gen 1a then you could consider executing a command frame the following block:

HF MF Gen 1a

What does the following command reveal:

hf mf cview

LF T5577 card

Low Frequency capability

If you think this could be a T55xx you can run a:

lf t55 detect

This should return the type of card. You can then examine the datasheet here: http://ww1.microchip.com/downloads/en/DeviceDoc/ATA5577C-Read-Write-LF-RFID-IDIC-100-to-150-kHz-Data-Sheet-DS70005357B.pdf

You can try to read all of the blocks with the following command:

lf t55xx read -b 0

You should keep incrementing the block number so that you can pull out all of the data.

Writing and reading blocks to a High Frequency Card

The following is an example of writing some data to block 1 on a MiFare Classic 1k card.

pm3 --> hf mf wrbl --blk 1 -k FFFFFFFFFFFF -d 4A41594420697320657031634A415944

This data could then be read with:

pm3 --> hf mf rdbl --blk 1 -k FFFFFFFFFFFF

Obviously you could also read the entire card with:

pm3 --> hf mf autopwn

You would then open a separate terminal and:

xxd hf-mf-ABCEDFIG-dump.bin

This should provide you with the output.