Reverse engineering


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  1. #1
    Christopher Sharp Guest

    Reverse engineering


    I am presently working on some Visual C/C++ codes that need upgrading and
    increase in efficiency. Some previous people who worked on the codes made
    significant number of improvements, and created various application programs
    that are available. Unfortunately, they did not provide the source code
    files that go with these applications, which they should have. However,
    I do have the source files that go with the earliest versions of the applications,
    and they can be compiled and run, after some bugs are removed.

    My question is, is there a way of reverse engineering the executable (.exe)
    code, which includes a .dll file? As I already have earlier versions of
    the source files, which include redundant code that is not used in those
    versions, but at least some of it is used in the later applications, it should
    be easier than starting from scratch. Incidentally, the later versions were
    compiled using the release option.

    Many thanks,

    Christopher Sharp

  2. #2
    Danny Kalev Guest

    Re: Reverse engineering

    There's no way to retrieve a source file from compiled (and probably
    optimized) executables. What you can do is review the current source
    files you have and manually optimize them. Then, compare the performance
    of the resultant executable with the optimized executables you have.

    Danny Kalev

    "The ANSI/ISO C++ Professional Programmer's Handbook"
    http://www.amazon.com/exec/obidos/ASIN/0789720221


    Christopher Sharp wrote:
    >
    > I am presently working on some Visual C/C++ codes that need upgrading and
    > increase in efficiency. Some previous people who worked on the codes made
    > significant number of improvements, and created various application programs
    > that are available. Unfortunately, they did not provide the source code
    > files that go with these applications, which they should have. However,
    > I do have the source files that go with the earliest versions of the applications,
    > and they can be compiled and run, after some bugs are removed.
    >
    > My question is, is there a way of reverse engineering the executable (.exe)
    > code, which includes a .dll file? As I already have earlier versions of
    > the source files, which include redundant code that is not used in those
    > versions, but at least some of it is used in the later applications, it should
    > be easier than starting from scratch. Incidentally, the later versions were
    > compiled using the release option.
    >
    > Many thanks,
    >
    > Christopher Sharp


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