How are undocumented functions discovered?

Posted by Paska on Programmers See other posts from Programmers or by Paska
Published on 2011-01-29T15:18:19Z Indexed on 2011/01/29 15:32 UTC
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Hi all,
I've always wondered how do you find undocumented / private API ?

Example the Apple undocumented / private API, Play Station, Windows Phone 7, Win32 Kernel, Windows API, hidden callback, etc...

What tools do hackers use to find out about private and undocumented functions?

Where can I read about peoples' experiences delving into private APIs and reverse engineering techniques which reveal the secrets which are normally explained in API documentation?

thanks,
A

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