Cracking Mifare Classic
Overview. Why?. MIFARE Classic?. MIFARE Ultralight?. Reading and capturing contents of the card. About this manufacturer block (Sector 0 – Block 0). The UID thing that messes with my head.
Writing a 4Byte dump on a different cardWhy?The MIFARE NFC card is used in many environments. I got a trash card, a card that I have to use to open the underground trash bin, that I want to clone. Detailed information about every sector on the card (if any data would be present except the UID)So the only interesting information is in Sector: 0, also called the manufacturer block.I also noticed that the UID was 7Byte, making it a MIFARE Ultralight card grrrrrrr About this manufacturer block (Sector 0 – Block 0)This part of the card is the only interesting part, as no other data is written to any sector/block as far as I can see.In order to understand the difference between a 4Byte and 7Byte UID (i.e. MIFARE Classic vs MIFARE Utralight), I have added some pictures:A more detailed picture explains some more information is included after the serial number on block 0:A more detailed picture of the 7byte UID:The UID thing that messes with my headAs you could see on my tag info, the UID on my trash card is 7 byte, so it works a bit different than the 4 byte one.The are explained as follows. A 4 byte UID is an identifier which has been assigned by the card manufacturer using a controlled database.
This database ensures that asingle identifier is not used twice. In contradiction, a 4 byte ID is an identifier which may be assigned to more then one contactless chip over the production time of a product so that more then one card with the same identified may be deployed into one particular contactless system.Writing a 4Byte dump on a different cardAs it is just cool to write a cards dump back, I have found a 4Byte UID MIFARE Classic 1kB card.
This is an Android NFC-App for reading, writing, analyzing, etc. MIFARE® Classic RFID-Tags. GENERAL INFORMATION This tool provides several features to interact with (and only with) MIFARE Classic RFID-Tags. It is designed for users who have at least basic familiarity with the MIFARE Classic technology.
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Read MIFARE Classic tags. Save and edit the tag data you read. Runasdate v1.11 free.
Crack Mifare Classic Key
Mifare Classic 4k
Write to MIFARE Classic tags (block-wise). Clone MIFARE Classic tags (Write dump of a tag to another tag; write 'dump-wise'). Key management based on dictionary-attack (Write the keys you know in a file (dictionary).