Thread: Logging a process's function calls

  1. #1
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    Question Logging a process's function calls

    Hello,

    Does anyone know how I can go about logging the Windows API function calls a process makes?

  2. #2
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    I wouldn't know how to go about logging API calls, but you could try out this piece of software: http://www.rohitab.com/apimonitor/

    -Futura
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    I found out the function it uses that I am interested in.

    Is there a way I can get a process to load my own DLL in place of a system DLL, so I can handle a function it uses and pass everything my DLL doesn't handle over to the real system DLL?

  4. #4
    Guest Sebastiani's Avatar
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    Search the web for articles by Matt Pietrek. And it's called "patching".
    Code:
    #include <cmath>
    #include <complex>
    bool euler_flip(bool value)
    {
        return std::pow
        (
            std::complex<float>(std::exp(1.0)), 
            std::complex<float>(0, 1) 
            * std::complex<float>(std::atan(1.0)
            *(1 << (value + 2)))
        ).real() < 0;
    }

  5. #5
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    Coo, ta.

    Patch the Import Address Table eh? Now I'll have to learn the Win32 Portable Executable format. Why can't these things be simple...

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