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Mifare Classic Card Recovery Tools Beta V0 1 Zip: Everything You Need to Know



What is Mifare Classic Card Recovery Tools Beta V0 1 Zip?




Mifare Classic Card Recovery Tools Beta V0 1 Zip is a set of tools that allows you to interact with Mifare Classic RFID tags. You can read, write, analyze, clone, and recover keys from these tags using this tool. It is based on the open source projects mfcuk and MifareClassicTool, which implement various attacks on the Crypto1 encryption algorithm used by Mifare Classic tags.




mifare classic card recovery tools beta v0 1 zip



This tool is designed for users who have at least basic familiarity with the Mifare Classic technology and hexadecimal number system. You also need an NFC reader that supports Mifare Classic tags, such as ACR 122U or Proxmark3. You can use this tool for educational purposes or for testing the security of your own tags.


How to use Mifare Classic Card Recovery Tools Beta V0 1 Zip?




To use this tool, you need to download the zip file from here and extract it to a folder on your computer. You also need to install some dependencies, such as libnfc, libusb, pcsc-lite, etc. You can find more information on how to install these dependencies in the README file of each project.


Once you have installed everything, you can run the tool by opening a terminal window and navigating to the folder where you extracted the zip file. Then, you can type one of the following commands:


./mfcuk -C -R 0:A -v 2 # This command will try to recover the key A of sector 0 using the dark side attack ./mfoc -O dump.mfd # This command will try to recover all keys using the nested attack and save them in a file called dump.mfd ./MifareClassicTool # This command will launch a graphical user interface that allows you to perform various operations on Mifare Classic tags


You can find more details on how to use each command in their respective help sections or online documentation.


How to recover keys from Mifare Classic cards?




The most important step for interacting with Mifare Classic cards is to recover their keys. Without knowing the keys, you cannot read or write any data on the tags. There are two main attacks that can be used to recover keys from Mifare Classic cards: the dark side attack and the nested attack.


The dark side attack




The dark side attack is based on a weakness in the pseudo-random number generator (PRNG) used by Mifare Classic cards. The PRNG produces predictable numbers that can be used to guess the key. The attack works as follows:


  • The attacker sends a request for authentication (RFA) with a random nonce (Nt) to the tag.



  • The tag responds with an encrypted answer (Ar) that contains Nt XORed with some bits derived from the key (K).



  • The attacker sends another RFA with a different Nt.



  • The tag responds with another Ar that contains Nt XORed with some bits derived from K.



  • The attacker repeats steps 3 and 4 until he collects enough pairs of Nt and Ar.



  • The attacker uses a brute force algorithm to find K by XORing Nt and Ar and comparing them with a table of possible values.



This attack can recover a key in about 30 seconds on average. However, it only works if there is no other communication between the tag and other readers during the attack. Otherwise, the PRNG will be reset and produce different numbers.


The nested attack




The nested attack is based on another weakness in the authentication protocol used by Mifare Classic cards. The protocol allows an attacker to authenticate with one key (K1) and then request another authentication with another key (K2) without resetting the PRNG. The attacker can then use K1 to decrypt part of K2 and reduce the search space for brute forcing K2. The attack works as follows:


  • The attacker knows one key (K1) for one sector (S1) of the tag.



  • The attacker sends an RFA with K1 to S1.



  • The tag responds with an Ar that contains Nt XORed with some bits derived from K1.



  • The attacker sends another RFA with K1 but requests S2 instead of S1.



  • The tag responds with another Ar that contains Nt XORed with some bits derived from K2.



  • The attacker uses K1 to decrypt part of K2 and reduce its search space.



  • The attacker repeats steps 4-6 until he collects enough pairs of Nt and Ar for each sector.



  • The attacker uses a brute force algorithm to find K2 by XORing Nt and Ar and comparing them with a table of possible values.



This attack can recover all keys in about 10 minutes on average. However, it requires knowing at least one key beforehand. Otherwise, it cannot start.


What are the advantages and disadvantages of Mifare Classic Card Recovery Tools Beta V0 1 Zip?




Mifare Classic Card Recovery Tools Beta V0 1 Zip is a powerful tool that can perform both attacks described above. It also has some other features that make it useful for interacting with Mifare Classic tags. Some of these features are:


  • It supports various NFC readers, such as ACR 122U or Proxmark3.



  • It has a graphical user interface that makes it easy to use.



  • It can save, edit, share, import, export, convert key files and dumps.



  • It can decode and encode value blocks and access conditions.



  • It can compare dumps and display differences.



  • It can display generic tag information, such as UID, ATQA, SAK, etc.



However, this tool also has some limitations that should be considered before using it. Some of these limitations are:


  • It is not compatible with all types of Mifare Classic tags. Some tags have special features or protections that prevent this tool from working properly.



  • It is not updated frequently. The latest version was released in 2018 and may not support newer NFC readers or operating systems.



  • It is not very user-friendly. It requires some technical knowledge and skills to use it effectively.



How to clone Mifare Classic cards?




Cloning Mifare Classic


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