Proxmark3 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.
Announcement
Time changes and with it the technology
Proxmark3 @ discord
Users of this forum, please be aware that information stored on this site is not private.
Pages: 1
#1 2016-01-15 07:44:55
- polynom
- Contributor
- Registered: 2016-01-15
- Posts: 23
Unknown ?F Tag
Hello dear people,
I have a unknown tag:
- very thin,
- only a few antenna turns (8 turns),
- 4*4 cm,
- no marking.
I am guessing it is a HF tag.
Tune:
#db# 20525 mV
#db# 19248 mV with tag
search HF does not give any results
iso14443a card select failed
no 14443B tag found
#db# 0 octets read from IDENTIFY requ
#db# 0 octets read from SELECT reques
#db# 0 octets read from XXX request:
What else can I try?
Cheers
Last edited by polynom (2016-01-25 15:23:33)
Offline
#2 2016-01-15 08:30:54
- iceman
- Administrator
- Registered: 2013-04-25
- Posts: 9,538
- Website
Re: Unknown ?F Tag
No printed numbers?
No company logo / name ?
Do you have access to the reader & tag, you can try snooping the communication.
Offline
#3 2016-01-15 09:51:41
- polynom
- Contributor
- Registered: 2016-01-15
- Posts: 23
Re: Unknown ?F Tag
Absolutely nothing written on it.
It's a square.
And it is fexible (this might help...)
I do not have access to a reader.
Is there any command I could use to wake up the tag? I have a scope to sniff what is happening
Offline
#4 2016-01-15 10:04:43
- iceman
- Administrator
- Registered: 2013-04-25
- Posts: 9,538
- Website
Re: Unknown ?F Tag
Did you try all "hf" commands?
Offline
#5 2016-01-15 12:04:36
- polynom
- Contributor
- Registered: 2016-01-15
- Posts: 23
Re: Unknown ?F Tag
Yes.
Except raw commands.
I see "NTAG" under ultralight.
If it was a NTAG tag, the 'hf mfu info' command will show "NTAG"?
Offline
#6 2016-01-15 12:30:22
- iceman
- Administrator
- Registered: 2013-04-25
- Posts: 9,538
- Website
Re: Unknown ?F Tag
If it was NTAG, then "hf 14a reader" would have said so.
--antenna strength output
"hw tune"
You'll need to have some distance between tag and antenna when it comes to HF.
usuallay 1-1.5cm. You can test different heights and position over antenna.
While you run
"hf search"
Offline
#7 2016-01-15 13:00:10
- polynom
- Contributor
- Registered: 2016-01-15
- Posts: 23
Re: Unknown ?F Tag
# HF antenna: 20.63 V @ 13.56 MHz
It's a home made antenna...
I did try a few positions and distances already
Offline
#8 2016-01-25 13:47:33
- polynom
- Contributor
- Registered: 2016-01-15
- Posts: 23
Re: Unknown ?F Tag
fyi, that tag appeared to be one of those "not suitable for PM3" RF label working at 8.2 MHz
Last edited by polynom (2016-01-25 13:47:54)
Offline
#9 2016-01-25 13:54:48
- iceman
- Administrator
- Registered: 2013-04-25
- Posts: 9,538
- Website
Re: Unknown ?F Tag
HF == 13.56mHz, would be interesting to see if the PM3 can be modified to read in lower mHz...
Offline
#10 2016-01-25 15:27:34
- polynom
- Contributor
- Registered: 2016-01-15
- Posts: 23
Re: Unknown ?F Tag
Most definitely, it would!
I built my HF and LF antennas at home. I would love to build another ?F antenna!
There is the HackRF that can do that already. But we do not owe one...
Would that be possible with the hardware components? Most of us won't go to tigtag for getting a 300$ different board.
Last edited by polynom (2016-01-25 15:28:40)
Offline
#11 2016-01-25 18:38:51
- marshmellow
- Contributor
- From: US
- Registered: 2013-06-10
- Posts: 2,302
Re: Unknown ?F Tag
would be interesting to see if the PM3 can be modified to read in lower mHz...
should be possible, but one would need to create another major mode or 2 in the FPGA i suspect.
Offline
#12 2016-01-25 19:16:39
- iceman
- Administrator
- Registered: 2013-04-25
- Posts: 9,538
- Website
Re: Unknown ?F Tag
The LF mode is ranged, look at the hw tune. I have no idea if HF is the same.
Offline
Pages: 1