Are you new to LinuxQuestions. Finally I want to make it absolutely clear that no fraud was committed during the course of my research. For a full list of EasyCard applications I invite you to check out their official website. Setting up on Windows Humm… who cares? For easy clean up, a separate build directory is recommended. Introduction to Linux - A Hands on Guide This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. I'm sure the script could be updated but keep in mind it is meant to serve as a proof-of-concept more than anything else. Donations made to that site do not benefit MacPorts project and the instructions shown there for installing software are incorrect. It will dump the card to a file you specified. Do you can me send to compile program about hardnested. Disclaimer I know all this info is available pretty much everywhere but I just wanted to assemble it a bit, put my own perspective on it. Make sure you have required run-time dependencies.
If that doesn't work, you need to run. Also, take care to replace all instances of with your own username. To write a text and sufing the internet you may use a different device in comparsion to a professional. In the spirit of full-disclosure, I hope naively? To be able to decrypt the content of the card, the keys must be found. When a transaction is made the card should be identified and a lookup should be initiated in a back-end database.
If the package you are compiling is nfc-tools, then this problem is described in. This process was then repeated many times for different types of transactions over the course of a few days. Wu was arrested about one month after first using one of the fraudulent cards, I have included a link to the chinapost article below. For some projects the Configure process can be iterative, so continue to press the Configure button until there are no red entries. In this section I will outline several attack scenarios which will either make us rich or poor! How this fixed and compile this project? Find the first key using mfcuk Now, here is the tricky part.
There are three significant bytes, 1 a 1-byte hex counter which increments if a purchase is made on a subsequent day and 2 a 2-byte field which is used to calculate the amount of money that has been spent on a given day. EasyCard's are still based on Mifare Classic and still don't implement any real-time integrity checks. For a list of projects using this library, see. If the EasyCard corporation detects and blocks certain fraudulent cards in their system, a malicious attacker can simply modify block0 and keep using the same card over and over. Software Well, is the center piece of the whole operation. Some other cool tools are needed of course for some serious hex hacking: like ghex, kdiff3, vbindiff… But, whatever.
Follow the instruction from Veritas Storage Administrator's Guide but still fail. From the image below you can see that the machine can not tell the difference with the legitimate card. This will become increasingly important as we will be comparing a lot! Using some arcane bash dark-arts I put together a script that will take a binary dump of an EasyCard and parse out all the most relevant data. For the most part the script structure should be clear from the various sectors that we analysed on the EasyCard. As I mentioned in my introduction, I hope that my post can in some small way contribute to the enhanced security of the EasyCard though I fear that my please may fall on deaf ears like those who have come before me. I will however show you a basic example of this process and then explain in detail how various parts of the card work. Please take note that it is a fully randomised key.
In addition, following some unknown rule-set, duplicates are sometimes stored of the same transaction. Then wait for the command to finish. The database information can then be used to securely process the transaction with a high level of integrity. It can be the same or a different directory than the source directory. At this point we have almost zero knowledge about what the data means. I learned on this forum that a new attack for hardnested emulated mifare classic.
Scenarios: 1 We can manipulate the values in sector 2 to decrease the balance on the card. In this scenario the EasyCard corporation would make a 9900% loss on a single card. As the libnfc's MacPort is not up-to-date, now follow Manual installation instructions to compile libnfc using usual autotools way. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. I have included links to the video and powerpoint slides below. Thanks to manufacturers which already done it, see.
A typical attack scenario is to use mfcuk to find the first key of the card which may take quite some time. It provides complete transparency and royalty-free use for everyone. If you are in Taiwan for any amount of time you will come in contact with EasyCard or as it is commonly pronounced Yoyo Card - yōuyóu kǎ. Lets put ourself in the mindset of the attacker for a moment. It is important to wait a time long enough to pass the pn532 wake up sequence, so do send a 0x55, 0x55 followed by some 30 0x00.
Can I know any function will be disable after 60 days? God bless the electronics makers from Hong Kong. I took a picture of the destroyed card which you can see below. Warning: We have previously posted a link to darwinports. Btw, right now all my clusters servers enviroment is running with keyless evalution license key. If something goes wrong, unplug everything, remove the card, and try again from the beginning. I will show that, once the card structure is understood, manipulating the contents is trivial. If you need more background on Mifare classic I recommend that you read my datasheet.