Author: Vasik Rajlich
Date: 01:17:38 02/17/06
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On February 17, 2006 at 02:33:32, Jouni Uski wrote: >Is it possible to disassemble exe-file, which is zipped and/or copy protected >like Fruit 2.2.1? Where are disassemblers downloadable? > >thanks > >Jouni IDA Pro is easily the best. Technically it is not legal (although even this is not quite that simple, there have been a number of court cases, etc), in practice in computer chess you can do it. Just a general comment though: it is _extremely_ hard to figure out the innovations in a program. Basically, I would say that in practice it is impossible. Yes, you can locate the move generator, because you already know what that looks like and what it does. But understanding the evaluation terms, or adjustments to search depth, would require an ungodly effort, especially for a complex program. Let me put it like this: every aspiring computer chess programmer has been very strongly tempted to try his hand at disassembling. When I started computer chess, Shredder was the king. We all wanted to know what he was doing. And nobody found out. Not Chrily Donninger. Not Frans Morsch. And not any of the then-amateurs. You'll find some people posting here for example about what they "found" in Rybka. So far it has always just been transparent guessing based on program behavior, with the disassembly argument used to make it seem legit. Vas
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