From:	tolj AT uni-duesseldorf DOT de (Stipe Tolj)
Subject:	Re: Decompile...
10 Jul 1998 02:29:54 -0700 :
Message-ID:	<35A4B77C.2071.cygnus.gnu-win32@uni-duesseldorf.de>
References:	<3 DOT 0 DOT 3 DOT 32 DOT 19980707214442 DOT 0069f908 AT pop DOT cwb DOT matrix DOT com DOT br>
Reply-To:	tolj AT uni-duesseldorf DOT de
Mime-Version:	1.0
To:	"Marcel R." <marshall AT cwb DOT matrix DOT com DOT br>
Cc:	gnu-win32 AT cygnus DOT com

Marcel R. wrote:
> 
> Hi 4 all...
> I want to know if there is some way to "Decompile" a file... I mean, get a
> exe file and make it be a cpp file, and view the code to do some things
> that the program do...
> Thanks...

no way. A binary (exe) file consists of assembler instructions for the
cpu. Their is no way to "decompile" the compiled and linked file to an
source code file, since the function f: source -> binary is not
injective so say it in mathematical terms.

The only way to find out "what" a binary file does is to disassembler
it, and perform aseemlber instructions step by step, controlling the cpu
registers and assembler registers that change within execution of the
analyzed program.

PS: If it would be possible to "decompile" exes to source code files, I
would be the first to "decompile" windows 98 and modify a bit to sell it
under an other name.

Regards, Stipe.

-- 
stud.rer.pol. Stipe Tolj <tolj AT uni-duesseldorf DOT de>
HTTP Server Development Management
Department of Economical Computer Science        
University of Cologne, Germany                  
http://www-public.rz.uni-duesseldorf.de/~tolj


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