Mifare hacking

Block 80, type A, key ffffffffffff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Block 79, type A, key ffffffffffff 00 00 00 00 00 ff 07 80 69 ff ff ff ff ff ff. Block 78, type A, key ffffffffffff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Block 77, type A, key ffffffffffff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Block 76, type A, key ffffffffffff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Block 75, type A, key ffffffffffff 00 00 00 00 00 ff 07 80 69 ff ff ff ff ff ff.

Block 74, type A, key ffffffffffff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Block 73, type A, key ffffffffffff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Block 72, type A, key ffffffffffff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Block 71, type A, key ffffffffffff 00 00 00 00 00 ff 07 80 69 ff ff ff ff ff ff.

Block 70, type A, key ffffffffffff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Block 69, type A, key ffffffffffff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Block 68, type A, key ffffffffffff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Block 67, type A, key a0a1a2a3a4a5 00 00 00 00 00 7e 17 88 c2 00 00 00 00 00 Block 66, type A, key a0a1a2a3a4a5 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Block 65, type A, key a0a1a2a3a4a5 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Block 64, type A, key a0a1a2a3a4a5 01 00 00 00 00 00 00 00 00 00 00 00 00 00 Block 63, type A, key a0a1a2a3a4a5 00 00 00 00 00 4b 44 bb 5a 00 00 00 00 00 Block 62, type A, key a0a1a2a3a4a5 :1f 01 b9 04 00 00 00 00 00 00 00 00 4d 49 43 Block 61, type B, key fc0a2a :dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd.

Block 60, type B, key fc0a2a :dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd. Block 59, type A, key a0a1a2a3a4a5 00 00 00 00 00 0f 00 ff 5a 00 00 00 00 00 Block 58, type B, key 58df0cfc :dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd. Block 57, type B, key 58df0cfc :dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd.

Block 56, type B, key 58df0cfc :dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd. Block 55, type A, key a0a1a2a3a4a5 00 00 00 00 00 0f 00 ff dc 00 00 00 00 00 Block 54, type B, key ab52 :dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd.

Block 53, type B, key ab52 :dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd. Block 52, type B, key ab52 :dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd. Block 51, type A, key a0a1a2a3a4a5 00 00 00 00 00 0f 00 ff a0 00 00 00 00 00 Block 50, type B, key c1 :dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd.

Block 49, type B, key c1 :dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd. Block 48, type B, key c1 :dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd. Block 47, type A, key a0a1a2a3a4a5 00 00 00 00 00 1e 11 ee 5a 00 00 00 00 00 Block 46, type B, key 28ea1b :dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd dd.

Block 45, type B, key 28ea1b ee ee ee ee ee ee ee 00 03 9c 01 17 46 00 Block 44, type A, key a0a1a2a3a4a5 01 00 80 00 05 5f 23 00 00 21 00 00 01 62 9c.

Block 43, type A, key a0a1a2a3a4a5 00 00 00 00 00 ff 07 80 69 b0 b1 b2 b3 b4 b5. Block 42, type A, key a0a1a2a3a4a5 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Block 41, type A, key a0a1a2a3a4a5 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Block 40, type A, key a0a1a2a3a4a5 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Block 39, type A, key a0a1a2a3a4a5 00 00 00 00 00 ff 07 80 69 b0 b1 b2 b3 b4 b5.

Block 38, type A, key a0a1a2a3a4a5 00 00 00 00 00 00 00 00 00 00 00 00 00 00 This is to allow both devices to become reader, antenna, and tag. MIFARE, is a trademark for a series of chips widely used in contactless smart cards and proximity cards. It is often incorrectly used as a synonym of RFID.

The reason behind this misuse is simple. NFC is simply a newer technology to interact with the first two. In , my employer started handing out U-KEY s to be used to load funds onto and buy coffee and snacks from different vending machines around the building.

But how simple? This classic tag structure is a whopping 1, bytes in size. To find the cryptographically important regions of the chip, Nohl and Plotz scanned for clues in the blocks: long strings of flip-flops that would implement the register important to the cipher, XOR gates that are virtually never used in control logic, and blocks on the edge of the chip that were sparsely connected to the rest of the chip, but strongly connected to each other.

They then reconstructed the circuit using their data, and from the reconstruction, they read the functionality. It was a painful process, but once it was done, the researchers had decoded the security on the chip, unveiling several vulnerabilities. Among the potential security risks they uncovered was a bit random number generator that was easy to manipulate -- so easy, in fact, that they were able to coax the generator into producing the same "random" number in every transaction, effectively crippling the security.

A potential attacker wouldn't have to go through all of the steps that Nohl and Plotz had to undertake to hack the RFID chip. A diagram of the Crypto-1 cipher, published in Nohl's recent paper, shows that the heart of the cipher is a bit linear feedback shift register and a filter function.

To find bits of the key, an attacker would send challenges to the reader and analyze the first bit of key stream sent back to the reader. Though there are some tricks to generating these challenges, it is computationally not a terribly expensive, or expansive, procedure. These tags are often called "gen1", "gen1a" or "UID". Remember this when you are shopping for special tags! More information about magic cards can be found here.

You can find a list of incompatible devices here. Getting Started First of all, you need the keys for the tag you want to read. Advantages of the Key Files Concept: You don't have to worry about which key is for which sector. The application tries to authenticate with all keys from the key file dictionary. You don't have to know all the keys.

If neither key A nor key B for a specific sector is found in the key file dictionary , the application will skip reading said sector. Releases 2 Version 4. Nov 22,