Mifare Classic Tool 2.3.1 [2021] Jun 2026
For specialized "Magic Cards" (e.g., CUID), the app allows writing to Block 0, enabling full UID cloning. How to Use MIFARE Classic Tool 2.3.1
要理解MCT，就必须理解MIFARE Classic的技术内核。
The application is strictly ; it cannot brute-force or automatically compromise unknown cryptographic keys. Instead, it uses a dictionary attack system . Users build or import standard text files filled with known 48-bit hexadecimal keys. MCT 2.3.1 systematically cycles through these files, trying to authenticate against each individual sector. 2. Sector-by-Sector Cloning and Dumps
Mifare Classic Tool 2.3.1 has become a de facto standard in the RFID industry for working with Mifare Classic cards. Its significance can be attributed to several factors:
Verdict
Without the correct keys, the tool cannot read the data, although it can attempt a dictionary attack.
. Version 2.3.1 (and its subsequent updates) serves as a specialized utility for researchers and hobbyists to read, write, and analyze the data stored on these widely used 13.56 MHz proximity cards Core Functionality
. Many modern phones (like some Samsung or Google Pixel models) use different controllers that physically cannot communicate with MIFARE Classic tags. Raw Data Focus
MCT本身并不具备暴力破解或密码学漏洞攻击（如Darkside攻击）能力，因为它基于手机NFC的效率无法满足高强度计算的需求。但是，它拥有极其高效的系统。 MCT以文件的方式管理密钥库。用户可以通过“字典攻击”的方法读取卡片：将一系列已知的默认密钥（如 FFFFFFFFFFFF 、 A0A1A2A3A4A5 等）、泄露的常用密钥或通过外部工具（如MFOC）破解的密钥，编制成一个文件（.keys）。当读取卡片时，MCT会遍历这个字典，尝试使用每一个密钥去认证卡片中的扇区。一旦匹配成功，MCT就会利用该密钥解密并读出该扇区的数据，或者利用已知的A密钥去配合读取B密钥。 mifare classic tool 2.3.1
虽然工具本身是冷冰冰的代码，但它背后所承载的探索精神、开源社区的协作以及无数开发者对信息安全的重视，却是温暖且富有生机的。正如此文开篇所言，希望每一个接触到MCT的人都能够在法律和道德的框架内，享受技术带来的乐趣与自由。
The last block of every sector stores Key A (6 bytes), Access Conditions (4 bytes), and Key B (6 bytes).
is the gold-standard Android application for interacting with MIFARE Classic RFID tags. Developed originally by Gerhard Klostermeier, this open-source utility turns an NFC-enabled Android device into a powerful low-level security analysis tool.
Mifare Classic Tool 2.3.1 has a range of applications across various industries, including: For specialized "Magic Cards" (e
Follow the reading steps above and tap the disk icon to save the file as a "Dump".
The card is split into 16 sectors (numbered 0 to 15). Each sector contains 4 blocks. Block Size: Each block contains exactly 16 bytes of data.
Help you safely.
Because MCT allows users to edit access control data and attempt card cloning from a consumer phone, it must be used responsibly. Security professionals utilize version 2.3.1 to demonstrate vulnerabilities to clients who still rely on legacy physical security infrastructure. Modifying public transit media, bypassing payment systems, or cloning access badges without explicit permission is illegal. Installation and Workflow Users build or import standard text files filled
