Reverse Engineering a Bank's Security Token

An anonymous reader writes "An engineer from Brazil has posted a technical walkthrough of how he was able to reverse engineer his bank's code-generating security token. He found a way to accurately generate his unlock codes with some custom code and an Arduino clone. (Don't worry: his method doesn't give him access to anybody else's codes.) 'Every exception thrown by this piece of code is obfuscated, as well as many of the strings used throughout the code. That is a major roadblock, since except...