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#1 2019-03-18 14:49:58

mopmopmop
Contributor
Registered: 2019-03-08
Posts: 4

Raw Commends on Mifare Cards

I'm a student trying to learn RFID system with the help PM3.
I came into a problem that when I used the RAW Commands, the response was never correct as its tips in the Proxmark Tool.
I don't know it's the CRC or other problems.

Is there any instruction or document about the usage of raw commends ?
Much appreciate if anyone can tell me.
Thx

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#2 2019-03-18 19:53:25

iceman
Administrator
Registered: 2013-04-25
Posts: 9,506
Website

Re: Raw Commends on Mifare Cards

read a datasheet over iso14443a commands?

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#3 2019-03-19 15:43:39

mopmopmop
Contributor
Registered: 2019-03-08
Posts: 4

Re: Raw Commends on Mifare Cards

I read the iso14443a.
Commands like WUPA and Anti-collision could work, but commands like read and write that need extra datas fails.

Does RAW commands means the PM3 sends whatever I write or it will automatically append the CRC or other thing to the commands that were eventually broadcasted?

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#4 2019-03-19 16:59:46

iceman
Administrator
Registered: 2013-04-25
Posts: 9,506
Website

Re: Raw Commends on Mifare Cards

did you look at the help text for the raw command?

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#5 2019-03-21 02:39:45

mopmopmop
Contributor
Registered: 2019-03-08
Posts: 4

Re: Raw Commends on Mifare Cards

proxmark3> hf 14a raw  -c -p -s    3000
received 7 octets         
04 41 16 12 C5 48 85           
received 18 octets         
04 41 16 DB 12 C5 48 85 1A 48 00 00 00 00 00 00 AE 1F     

This is the response when I used RAW commands 3000 to read a Mifare Ultralight card.
The help text said the correct answer is 16 bytes but it was actually 18 bytes.
It confuses me.

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#6 2019-03-21 06:55:59

iceman
Administrator
Registered: 2013-04-25
Posts: 9,506
Website

Re: Raw Commends on Mifare Cards

its correct, you just have two crc bytes in the end that you missed when you read the datasheet

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