funsec mailing list archives

Re: Operating System in US ATMs


From: "Vitaly McLain" <vitaly.mclain () gmail com>
Date: Tue, 3 Jun 2008 22:11:15 -0400

There's really a plethora of operating systems to be found on ATMs.
Many older ones are just CICS screens or similar. OS/2 was also very
popular, but as mentioned, Windows XP is taking over. In internal
penetration tests, it's not uncommon to compromise a Diebold ATM
because they often lack patches for common vulnerabilities, such as
NetAPI. That's scary, but then again there are a lot of hurdles to
clear before you can make this access useful. You have to be on the
internal network first, then you have to find a way to read inputted
information (I believe pin-pads are encrypted at some point?), etc.
Certainly possible, but it's not low hanging fruit -- especially when
stand-alone ATMs like Triton and Tranax can often be easily
cleaned-out with a pre-paid debit card, the right button combo on the
keypad and a default password.

vitaly
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