Description: The Reverse Engineer occasionally faces situations where even his most advanced commercial tools do not support the instruction set of an arcane CPU. To overcome this situation, one can develop the missing disassembler. This talk is meant to be a tutorial on how to approach the task, what to focus on first and what surprises one may be in for. The primary focus will be on the transformation of byte code back into mnemonic representation where only the reverse transformation is available (i.e. you have the respective assembler). It also covers how to integrate your new disassembler into your reverse engineering tool chain.
This tutorial talk will give:
An introduction to the problem
How to obtain byte code
Recognizing basic properties of the byte code
Finding Addressing Modes
Implementing a IDA Pro processor module
Reading code you are not supposed to
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Original Source: http://www.youtube.com/watch?v=U8R2Zh75ki4