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decompiler
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Join Date: Aug 2006
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Posting Whiz in Training
is there any software that gives you souce from .exe programs?
No. Once compiled the source code cannot be retrieved.
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Originally Posted by jan1024188 
but why?
The actual C / C++ source code goes thorough a lot of transformations and platform specific optimizations during its compilation and building phase which make the source code from the object file to be retrieved almost impossible.
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Posting Whiz in Training
There are some applications whose developers claim can (in some cases) retrieve a C - like representation of the original source from a .exe file. It is generally believed that reverse compilation of 3rd level languages is difficult bacause there may not always be a one to one mapping between source and compiled binary. It is certainly impossible to retrieve C++ code from a .exe because all class structures are thrown away before the binary is produced.
Steven.
Steven.
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Assembly on the other hand, can be disassembled fairly easily from an executable because it's so low-level. Java is also very easy to decompile; you can get almost an exact replica of the original source code if you run it through a decompiler because it's only compiled to bytecode.
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