Question

我使用以下命令执行我的Mifare Classic 1K卡的转储：

mfoc -O my_dump.mdf

然后我使用以下命令将转储写入空白卡：

nfc-mfclassic w A my_dump.mdf blank.mdf f

结果：

NFC reader: ACS / ACR122U PICC Interface opened
Found MIFARE Classic card:
ISO/IEC 14443A (106 kbps) target:
    ATQA (SENS_RES): 00  04  
       UID (NFCID1): a0  b0  5b  56  
      SAK (SEL_RES): 08  
Guessing size: seems to be a 1024-byte card
Writing 64 blocks |...............................................................|
Done, 63 of 64 blocks written.

之后我尝试用开头使用的相同命令读取我的新卡：

mfoc -O my_new_dump.mdf

结果是：

Found Mifare Classic 1k tag
ISO/IEC 14443A (106 kbps) target:
    ATQA (SENS_RES): 00  04  
* UID size: single
* bit frame anticollision supported
       UID (NFCID1): a0  b0  5b  56  
      SAK (SEL_RES): 08  
* Not compliant with ISO/IEC 14443-4
* Not compliant with ISO/IEC 18092

Fingerprinting based on MIFARE type Identification Procedure:
* MIFARE Classic 1K
* MIFARE Plus (4 Byte UID or 4 Byte RID) 2K, Security level 1
* SmartMX with MIFARE 1K emulation
Other possible matches based on ATQA & SAK values:

Try to authenticate to all sectors with default keys...
Symbols: '.' no key found, '/' A key found, '\' B key found, 'x' both keys found
[Key: ffffffffffff] -> [................]
[Key: a0a1a2a3a4a5] -> [/...............]
[Key: d3f7d3f7d3f7] -> [/...............]
[Key: 000000000000] -> [/...............]
[Key: b0b1b2b3b4b5] -> [/...............]
[Key: 4d3a99c351dd] -> [/...............]
[Key: 1a982c7e459a] -> [/...............]
[Key: aabbccddeeff] -> [/...............]
[Key: 714c5c886e97] -> [/...............]
[Key: 587ee5f9350f] -> [/...............]
[Key: a0478cc39091] -> [/...............]
[Key: 533cb6c723f6] -> [/...............]
[Key: 8fd0a4f256e9] -> [/...............]

Sector 00 - Found   Key A: a0a1a2a3a4a5 Unknown Key B
Sector 01 - Unknown Key A               Unknown Key B
Sector 02 - Unknown Key A               Unknown Key B
Sector 03 - Unknown Key A               Unknown Key B
Sector 04 - Unknown Key A               Unknown Key B
Sector 05 - Unknown Key A               Unknown Key B
Sector 06 - Unknown Key A               Unknown Key B
Sector 07 - Unknown Key A               Unknown Key B
Sector 08 - Unknown Key A               Unknown Key B
Sector 09 - Unknown Key A               Unknown Key B
Sector 10 - Unknown Key A               Unknown Key B
Sector 11 - Unknown Key A               Unknown Key B
Sector 12 - Unknown Key A               Unknown Key B
Sector 13 - Unknown Key A               Unknown Key B
Sector 14 - Unknown Key A               Unknown Key B
Sector 15 - Unknown Key A               Unknown Key B


Using sector 00 as an exploit sector
Card is not vulnerable to nested attack

我也尝试使用mfcuk命令，但我看不懂。

是否有人可以帮我解释发生的事情？感谢

Answer 1

读取卡时，您将无法读取扇区验证密钥（位于每个扇区的第3个块中）。您将看到转储中的值被所有00或所有FF替换。如果将此转储写入任何卡，则有效地将这些键值设置为与原始卡不同。

写入转储到空白Mifare卡后再也无法读取它

1 个答案: