After changing the UID will be write data to the card?Please read at least Mifare documentation before asking this kind of question... UID is not in a writable memory area...I have downloaded the latest version of the Key Recovery Tool. MiFare Classic Universal toolKit (MFCUK).

It is the only read-only block of the card: you can only read it, not rewrite it. I can send you my windows proxmark folder in pm if you want , but the first thing to do is to connect the proxmark on the right com port e.g.

I can use this successfully locally on Mac OS 10.6 and on a virtualized Ubuntu 11.04. a gate badge) or an RFID reader (e.g. I then tried nfc-list: $ src/nfc-list Found PN533 device Bulk endpoint in : 0x04 Bulk endpoint in : 0x84 Setting config failed

Trying to use I apologize if this behavior is known and expected, as I am still not extensively familiar with the structure of these cards, but as I understood, all MiFare Classic cards should be equally vulnerable.Successfully merging a pull request may close this issue.

It then becomes possible to make a perfect clone of an unknown card: not only its content but also its UID!The nfc-mfclassic tool allows to write and read this kind of cards, using its 'R|W' option. This tool was mainly developed for security research purposes on these cards, so it is not extremely simple and useful for conventional use. 02-07 3136. The informations discussed above can be found here. Those are the different tag nonces encountered; as the attack aims at fixing them, keeping these as low as possible means you are being accurately fixing them and gaining more useful information.In an attempt to improve software implementation and study the actual attack, I've begun experimenting with real-time versions of linux (RTAI / Xenomai) to see if using them would benefit to the darkside attack.Hope this helps, I'll keep you posted on my experiments (conducted on my free time, so this will be a long road).Just forgot to mention the experiments were VERY sensitive of whether I was using an extension cord or not, the distance and orientation of the tags relative to the reader. I'm willing to read whatever it takes, so don't hesitate to leave here any document.Although I get a bunch of keys, none of them are, in fact, validHowever, I noticed that the last 2 bytes of the keys are always good, but Same wrong behavior with 2 different kinds of Mifare Classic 1K tags. I assume that the bug described in [9] is the one causing trouble. The key was, however, incorrect. where libnfc is?

I cannot even get the hf command to work in my ProxSpace environment.. Can you write me the method how to do it? In the rest of this page, I will refer to the key as ${KEY}.. Armed with the secret key, try again dumping the tag: (this is essentially the same as the first step, but specifying the key) If you want to run mfcuk/mfoc, you should buy an ACR122-like reader made by Alcatel-Lucent: Touchatag.Alright, turns out it was finding a matching nonce once every ~10000 tries which.. err.. wasn't going to end well.How did you changed sleep time? Took me a while. I have Ubuntu 11.10 32bits installed and got mfoc installed using the compiled binaries from Thomas Hood. If it is, are there any known work-arounds? Communication is mostly one-way: one of the devices acts as a transmitter while the other behaves as a receiver.Mifare NFC tags are smart cards, or more simply memory cards with an NFC chip.

Any help is greatly appreciated.I have the same problem. I tried usual mfcuk syntax and It cant find any keys in one entire day.Guys, please help me. GitHub Gist: instantly share code, notes, and snippets. I just put that sleep settings and less than one hour I've got sector 0 keys. The 44th Demilitarized Zone. Whether you want to send photos, videos, files, or make a payment, NFC can make it easy to do so. I have recovered the key using mfoc since it used default keys. To better understand how the access bits are used, I invite you to read the documentation in more detail, and to use the following site (which allows you to easily interpret the access bits of the Mifare CLASSIC cards): To show you the range of possibilities of these access bits, it is possible for example to allow key A to read only and key B to write only to the sector.The last block of each sector is therefore not read-only, it is possible to rewrite it but you must be extremely careful what you write to it in order not to lose control of the card.Reading and writing a Mifare CLASSIC card is relatively simple: all you need is an NFC compatible reader and an associated NFC library in the language you wish to use.According to my experience, it is possible to interact with a Mifare CLASSIC card in Arduino (I will take the latter as an example, but the bookstores mentioned above are all very well documented and accessible.I personnally use the ACR122 reader, for this reader to work there is a bit of pre-installation: you need to install the pcsc service and associated tools.For the reader to work, the pcsc service must be started:The reader light should now come on. -g -O2 -I/usr/local/include -I/usr/include/PCSC -MT mfcuk_keyrecovery_darkside.o -MD -MP -MF .deps/mfcuk_keyrecovery_darkside .Tpo -c -o mfcuk_keyrecovery_darkside.o mfcuk_keyrecovery_darkside.c mv -f .deps/mfcuk_keyrecovery_darkside.Tpo .deps/mfcuk_keyrecovery_darkside.Po gcc -g -O2 -I/usr/local/include -I/usr/include/PCSC -o mfcuk…

For example: If you remove the NFC card, the programm wont recognize it!Btw, do you have those kind of errors in your dmesg:[14662.281312] usb 4-1: usbfs: process 15831 (pcscd) did not claim interface 0 before useI've been playing with mfcuk for almost a week. Mifare Classic Key Recovery tool - "Dark Side" Attack (Page 3) — MFOC, MFCUK, Crapto1, etc.