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-   -   ATR problem ? The financial institution is unavailable to approve the transaction at this time (http://txgate.io:443/showthread.php?t=56751)

MrAlex 03-14-2025 05:25 PM


I have a problem cashing out with clones.
I follow this method. Initialize, delete and format the jcop card. Set ATR. Set IST files with X2 and tried Isttool too. Finally ARQC.
Each time when i use it to the ATM i enter the PIN and see balance. I choose the amount for withdrawal. I can read processing withdrawal. Just after it says decline.
On the ATM ticket i can read "The financial institution is unavailable to approve the transaction at this time"
If the financial institution can't be reached could it be because i used the wrong ATR ?

BricK 03-14-2025 05:41 PM


emv software its bullshit

Jackyzhang 03-14-2025 05:57 PM


Quote:

Originally Posted by Creator2
I have a problem cashing out with clones.
I follow this method. Initialize, delete and format the jcop card. Set ATR. Set IST files with X2 and tried Isttool too. Finally ARQC.
Each time when i use it to the ATM i enter the PIN and see balance. I choose the amount for withdrawal. I can read processing withdrawal. Just after it says decline.
On the ATM ticket i can read "The financial institution is unavailable to approve the transaction at this time"
If the financial institution can't be reached could it be because i used the wrong ATR ?</br></br></br></br></br></br></br>

This is why chip cloning with emv software will never ever work
The key is that EMV cards don't just output the same response every time. They're a*challenge-response*system: they work by reading a "challenge" message from the terminal, doing some computation within the chip, and then outputting a unique "response" message back. If you capture that response, you're only capturing*one possible output*-- the one that corresponds to the challenge it was sent. Since a terminal*should*never output the same challenge twice and the challenge*should*be unpredictable, then that capture response*should*be useless in the future.
In order to fully clone an EMV chip, you need to know the secret that's stored inside it. Since it never transmits that secret, obtaining it is impractical.
This in contrast to other identification technology such as RFID and magnetic stripes which only know how to transmit*one*number. In the case of these technologies, cloning that output is reasonably simple
</br></br></br></br></br></br></br>

MrAlex 03-14-2025 06:04 PM


Quote:

Originally Posted by hence
This is why chip cloning with emv software will never ever work
The key is that EMV cards don't just output the same response every time. They're a*challenge-response*system: they work by reading a "challenge" message from the terminal, doing some computation within the chip, and then outputting a unique "response" message back. If you capture that response, you're only capturing*one possible output*-- the one that corresponds to the challenge it was sent. Since a terminal*should*never output the same challenge twice and the challenge*should*be unpredictable, then that capture response*should*be useless in the future.
In order to fully clone an EMV chip, you need to know the secret that's stored inside it. Since it never transmits that secret, obtaining it is impractical.
This in contrast to other identification technology such as RFID and magnetic stripes which only know how to transmit*one*number. In the case of these technologies, cloning that output is reasonably simple</br>

Thank you for your answer ! I will do research on RFID and magnetic stripe technologies.

Shef:> 03-14-2025 06:15 PM


If I install a proxmark3 on an ATM and access the pin via camera, I can have a one time use with that captured RFID clone correct? Assuming I use the cloned tap-to-pay before they make another transaction? Atleast this is what I recently read, I can't find the source but I'm looking for it. Sorry I am in over my head just seems like you are knowledgeable

milliganone 03-14-2025 06:24 PM


Quote:

Originally Posted by whatthefuckity
If I install a proxmark3 on an ATM and access the pin via camera, I can have a one time use with that captured RFID clone correct? Assuming I use the cloned tap-to-pay before they make another transaction? Atleast this is what I recently read, I can't find the source but I'm looking for it. Sorry I am in over my head just seems like you are knowledgeable

im almost sure that wont work i dont think the cc rfid would be static. the only way to clone emv is with malware that takes one rfid/emv and makes then scan again to send the payment. then they clone it and cashout at a pos

bullinkln 03-14-2025 06:30 PM


delete


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