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#1 2018-09-16 14:44:39

yukihama
Contributor
Registered: 2018-05-13
Posts: 56

my first hf snoop result,help needed^_^

Hi all,
I got a unknown door swipe card ,no results of "hf search" and "lf search".I can see the HF voltage drop to decide this card is working on HF.So I have to first time to use hf snoop and got results as following: and kind help with this?
Q1: has the cmd hf snoop 10000 got the wanted data?
Q2:If no for Q1, how to manage the timing of placing the card to reader and hit Enter on keyboard?
Q3:is there any other effective way to sniff the communication btwn tag and reader?


pm3 --> hf snoop 10000
#db# Buffer cleared (40000 bytes)
#db# Skipping first 10000 sample pairs, Skipping 0 triggers.

#db# Trigger kicked! Value: 255, Dumping Samples Hispeed now.
#db# HF Snoop end
pm3 -->
pm3 --> hf list
Recorded Activity (TraceLen = 40000 bytes)

Start = Start of Start Bit, End = End of last modulation. Src = Source of Transfer
iso14443a - All times are in carrier periods (1/13.56Mhz)

      Start |        End | Src | Data (! denotes parity error)                                           | CRC | Annotation
------------+------------+-----+-------------------------------------------------------------------------+-----+--------------------
          0 |      31354 | Rdr |79  79  79  79  79  79  79  79  00! 00! 00! 00! 00! 00! 00! 00! 00! 12!  |     |
            |            |     |31  47! 57  62  69! 70  76  7c  ff! ff! ff! ff! ff! ff! ef  c9! af! 9d   |     |
            |            |     |91  88! 82! 7e  7b! 79  78  77! 76  76! 75  75! 75  75  75! 75! 75! 75!  |     |
            |            |     |75! 75! 75  75! 75  74  74! 74! 74  74! 74! 74  74! 74  74  74  74  74   |     |
            |            |     |73  73! 73! 73  73  73! 73! 73! 73  73! 73! 73  73! 73! 73  73! 73  73!  |     |
            |            |     |73! 73! 73  73! 73! 73  73  73! 73! 73! 73! 74! 73  73  73! 73  74! 73!  |     |
            |            |     |74  74  74  74  74  73! 74  74  74  74  74  74  74  74  74  74  74  74   |     |
            |            |     |74  75! 75! 74  75! 75! 75! 75! 75! 75! 75! 76! 76! 76! 76! 76! 76! 76!  |     |
            |            |     |76! 76! 77  77  77  77  77  77  77  77  77  77  78  78  78  77  78  78   |     |
            |            |     |78! 78  78  78  78! 79! 79! 79  79! 79! 79! 79! 79  79! 79! 7a  7a! 7a   |     |
            |            |     |7a  7a! 7a! 7a! 7a! 7b! 7b! 7b  7b  7b! 7b! 7b! 7c! 7c  7c  7c  7c! 7c!  |     |
            |            |     |7c! 7c  7c! 7c  7c  7d! 7c  7d  7d  7d  7d  7d! 7d! 7d! 7e! 7d! 7e! 7e   |     |
            |            |     |00! 00  00  00  00  00  00  00  00! 1f! 3c  4f! 5e! 67! 6e  75  79  84   |     |
            |            |     |ff  ff  ff  ff! ff  ff  f0! cd! b5! a5  99  91  8c! 88! 85  83! 82  82   |     |
            |            |     |81  81! 81! 80! 80  80! 80! 80! 80! 80  80  80! 80  81  81  80! 80! 80   |     |
            |            |     |80  80! 80  80! 81  81  81  81! 81! 81! 81! 81  81  81  81  00! 00! 00!  |     |
            |            |     |00! 00  00  00  00  00! 1c  39! 4d! 5c  66  6d! 74  78! 84! ff! ff! ff   |     |
            |            |     |ff  ff  ff  f2  cf! b6  a6! 9a  92! 8d  89! 86  84! 83  82! 81  81  81   | !crc|
  117901063 |  117934216 | Tag |80! 80  80  80  80  80  81! 80! 80! 80  80  80  80  80  80  80! 80! 80   |     |
            |            |     |80  80  80  80  80  80! 80! 81! 80  80  7f  80  80  80! 80! 80  80  80   |     |
            |            |     |80  7f  7f  7f! 7f! 7f  7f  7f  7f  7f  7f  7f! 7f! 7e! 7e! 7e! 7e! 7e!  |     |
            |            |     |7e! 7e  7e  7e! 7e! 7e! 7e! 7e! 7e! 7d  7d  7d! 7d! 7e! 7e! 7d! 7d! 7d   |     |
            |            |     |7d  7d! 7d! 7d! 7d! 7c  7c  7c! 7c! 7c  7c  7c  7c  7c  7b! 7b  7b  7b!  |     |
            |            |     |7b! 7b! 7b! 7b! 7b! 7b  7a! 7a  7a  7a  7a  7a  7a  7a! 7a! 7a  7a  7a   |     |
            |            |     |7a  79  7a  79! 79! 79  79  79  79  79  79  78  78  78! 78! 78! 78! 78!  |     |
            |            |     |78! 78  77  77! 77! 77! 77! 77! 76  76! 76! 76  76  76  76  75  75  75!  |     |
            |            |     |75! 76  75  75  75  75  75  75! 75! 75  75  75  75  74! 74! 74  75! 74!  |     |
            |            |     |74! 74! 74! 74! 73  74  73! 73  73  73  73  73  73  73! 73! 73  73  73   |     |
            |            |     |73  73  73  73! 73! 73  73  73  73  73  73  73! 73! 73  73  73  73  73   |     |
            |            |     |73  73  73! 73  73  73  73  73  73  73! 73! 73  73  73  73  73  73  73!  |     |
            |            |     |73! 73  73  74! 74! 74! 74! 74! 74  74! 74! 74! 74! 74! 74! 75  75! 75   |     |
            |            |     |75  75  75  75  75  75  75! 75  75  75  75  75  76  76  76! 76  76  76   |     |
            |            |     |76  76  77! 77! 77  77! 77! 77! 77! 77! 77! 77  77  77! 78! 78! 78! 78!  |     |
            |            |     |78! 78! 78  78! 79  79  79  79  79  79  79! 79  79  79  7a  7a  7a  7a   |     |
            |            |     |7a! 7a  7a  7a  7a  7b! 7b! 7b! 7b  7b! 7b! 7b! 7c  7b! 7c  7c  7c! 7c   |     |
            |            |     |7c  7c  7c  7c  7d! 7d! 7d  7d! 7d! 7d! 7d! 7d! 7d! 7d! 7e  7d! 7d! 7e!  | !crc|
  101058054 |  101090950 | Tag |80  80! 80! 7f! 7f  7f! 7f  7f! 7f  7f! 7f! 7f! 7f  7f! 7f  7f! 7f  7f!  |     |
            |            |     |7e  7f! 7e! 7e  7f  7e  7e! 7f! 7e  7e  7e! 7e  7e! 7e! 7e! 7e  7e  7e   |     |
            |            |     |7d! 7d  7d! 7e! 7d! 7d  7d  7d  7d! 7d  7c  7c  7c  7c! 7c! 7c! 7c  7c!  |     |
            |            |     |7b! 7b! 7b! 7b  7b  7b  7b! 7b  7b! 7b! 7b! 7b  7b  7b  7b! 7b  7a  7a   |     |
            |            |     |7a  7a! 7a! 7a! 7a  7a! 7a  7a  79  79! 79! 79! 79  79! 79  78! 78! 78   |     |
            |            |     |78  78  78! 78  78! 77! 77! 77  77  77  77! 77  77! 77! 77! 77  76! 76!  |     |
            |            |     |76  76! 76  76  76  76! 76! 76! 76  76  76! 75! 75  75! 75! 75! 75  75!  |     |
            |            |     |75                                                                       | !crc|

Last edited by yukihama (2018-09-16 14:59:17)

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#2 2018-09-19 03:50:02

marshmellow
Moderator
From: US
Registered: 2013-06-10
Posts: 2,234

Re: my first hf snoop result,help needed^_^

afaik hf snoop is designed to work with the graph (data plot) not the list cmd, and is only used when the protocol cannot be identified (not 15693 or 14443A or 14443B)

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#3 2018-09-19 13:13:14

yukihama
Contributor
Registered: 2018-05-13
Posts: 56

Re: my first hf snoop result,help needed^_^

marshmellow wrote:

afaik hf snoop is designed to work with the graph (data plot) not the list cmd, and is only used when the protocol cannot be identified (not 15693 or 14443A or 14443B)


Dear Marshmellow,
C:and is only used when the protocol cannot be identified (not 15693 or 14443A or 14443B)
A:I am working on an unknown tag called sielox. This protocol is unkown to anyone yet.

C: hf snoop is designed to work with the graph (data plot) not the list cmd
A:Could i have any reference for this snoop and data plot details?

I am grateful to gurus like you^)^

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#4 2018-09-19 13:54:59

marshmellow
Moderator
From: US
Registered: 2013-06-10
Posts: 2,234

Re: my first hf snoop result,help needed^_^

Reference: http://www.proxmark.org/forum/viewtopic.php?id=2675

You can save the captured snoop with data save filename

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