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#1 2020-06-19 09:32:24
- yc
- Contributor
- Registered: 2020-06-15
- Posts: 2
ISO15693 snoop ? Ask about packet loss?
Hello,
we tried to use the hf 15 snoop command and found that the captured packets are only a little bit, probably only one-tenth, please ask why? thank you very much.
proxmark3> hf 15 snoop
#db# Snoop started. Press PM3 Button to stop.
#db# Snoop stopped.
#db# Snoop statistics:
#db# ExpectTagAnswer: 1, TagIsActive: 0, ReaderIsActive: 0
#db# DecodeTag State: 0
#db# DecodeTag byteCnt: 0
#db# DecodeTag posCount: 513584
#db# DecodeReader State: 1
#db# DecodeReader byteCnt: 1
#db# DecodeReader posCount: 0
#db# Trace length: 239
#db# Max behindBy: 3
proxmark3> hf list 15
Recorded Activity (TraceLen = 239 bytes)
Start = Start of Frame, End = End of Frame. Src = Source of transfer
All times are in carrier periods (1/13.56Mhz)
Start | End | Src | Data (! denotes parity error, ' denotes short bytes) | CRC | Annotation |
------------|------------|-----|-----------------------------------------------------------------|-----|--------------------|
0 | 35840 | Rdr | 26 01 00 00 | !crc| INVENTORY
1697888 | 1733728 | Rdr | 26 01 00 00 | !crc| INVENTORY
16892896 | 17076192 | Rdr | 26 01 00 f6 28 00 00 00 00 00 00 00 00 00 00 00 | |
| | | 00 00 00 00 00 00 | !crc| INVENTORY
17115744 | 17167968 | Rdr | 22 23 4a 53 00 00 | !crc| READ_MULTI_BLOCK
17076352 | 17325184 | Rdr | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | |
| | | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | !crc|
17377088 | 17511232 | Rdr | 40 | |
83137440 | 83173280 | Rdr | 26 01 00 00 | !crc| INVENTORY
94940064 | 95123360 | Rdr | 26 01 00 f6 28 00 00 00 00 00 00 00 00 00 00 00 | |
| | | 00 00 00 00 00 00 | !crc| INVENTORY
95162144 | 95214368 | Rdr | 22 23 4a 53 00 00 | !crc| READ_MULTI_BLOCK
95123776 | 95372608 | Rdr | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | |
| | | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | !crc|
95424512 | 95558656 | Rdr | 40
proxmark3> hf 15 snoop
proxmark3> #db# Snoop started. Press PM3 Button to stop.
#db# Snoop stopped.
#db# Snoop statistics:
#db# ExpectTagAnswer: 1, TagIsActive: 0, ReaderIsActive: 0
#db# DecodeTag State: 0
#db# DecodeTag byteCnt: 9
#db# DecodeTag posCount: 656194
#db# DecodeReader State: 1
#db# DecodeReader byteCnt: 1
#db# DecodeReader posCount: 0
#db# Trace length: 97
#db# Max behindBy: 3
proxmark3> hf list 15
Recorded Activity (TraceLen = 97 bytes)
Start = Start of Frame, End = End of Frame. Src = Source of transfer
All times are in carrier periods (1/13.56Mhz)
Start | End | Src | Data (! denotes parity error, ' denotes short bytes) | CRC | Annotation |
------------|------------|-----|-----------------------------------------------------------------|-----|--------------------|
0 | 35840 | Rdr | 26 01 00 00 | !crc| INVENTORY
1697120 | 1732960 | Rdr | 26 01 00 00 | !crc| INVENTORY
8609760 | 8650720 | Tag | 00 df 00 00 08 00 00 f8 32 | ok |
8592096 | 8840928 | Rdr | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | |
| | | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | !crc|
8892896 | 9027040 | Rdr | 40
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#2 2020-06-19 10:44:50
- iceman
- Administrator
- Registered: 2013-04-25
- Posts: 9,538
- Website
Re: ISO15693 snoop ? Ask about packet loss?
Welcome and thank you for reading the introduction post http://www.proxmark.org/forum/viewtopic.php?id=1125.
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