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pointer to exe in memory? [message #22535]

Fri, 24 July 2009 21:44

nixnixnix
Messages: 415
Registered: February 2007
Location: Kelowna, British Columbia

Senior Member

Hi,

Is there a way to get hold of a pointer to the beginning of the memory containing the executable? I want this so I can put together a scheme which can verify the authenticity of the executable being used.

Failing that, is there a way to find where the current executable was read from (on disk).

I realise these are strange requests but I'm trying to come up with something that is secure but doesn't harass users.

Nick

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Re: pointer to exe in memory? [message #22537 is a reply to message #22535]

Sat, 25 July 2009 00:19

koldo
Messages: 3453
Registered: August 2008

Senior Veteran

Hello nixnixnix

If you want to get the file address in Windows perhaps you can use CreateFile to get a file handler and SetFilePointerEx to get the address of the beginning of the file.

Best regards
Koldo

Best regards
Iñaki

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Re: pointer to exe in memory? [message #22542 is a reply to message #22535]

Sun, 26 July 2009 03:38

mirek
Messages: 14271
Registered: November 2005

Ultimate Member

In Win32, these might be useful:

http://msdn.microsoft.com/en-us/library/ms683200(VS.85).aspx

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Re: pointer to exe in memory? [message #22575 is a reply to message #22542]

Tue, 28 July 2009 01:05

nixnixnix
Messages: 415
Registered: February 2007
Location: Kelowna, British Columbia

Senior Member

Thanks.

I'll give this a try although this reads the prgram from disk right? Not from what is in memory? ( I realise that unless this function gets compromised its the same thing).

Nick

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Re: pointer to exe in memory? [message #22578 is a reply to message #22575]

Tue, 28 July 2009 08:12

koldo
Messages: 3453
Registered: August 2008

Senior Veteran

Hello nixnixnix

SetFilePointerE is supposed to get the file position and Mirek's post (
http://msdn.microsoft.com/en-us/library/ms683200) is to get the program position in memory.

Best regards
Koldo

Best regards
Iñaki

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Re: pointer to exe in memory? [message #22681 is a reply to message #22578]

Wed, 05 August 2009 00:51

nixnixnix
Messages: 415
Registered: February 2007
Location: Kelowna, British Columbia

Senior Member

Thanks Koldo but I don't appear to have SetFilePointerEx in my version of UPP (latest from SVN). Am I missing something?

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Re: pointer to exe in memory? [message #22686 is a reply to message #22681]

Wed, 05 August 2009 08:35

koldo
Messages: 3453
Registered: August 2008

Senior Veteran

Oh Nixnixnix, it is not so easy.

You can find a reference in http://msdn.microsoft.com/en-us/library/aa365542%28VS.85%29. aspx and in http://msdn.microsoft.com/en-us/library/cc500401.aspx there is a general explanation.

SetFilePointerEx gives a file pointer, although I do not know if it will serve you.

Best regards
Koldo

Best regards
Iñaki

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Re: pointer to exe in memory? [message #22743 is a reply to message #22686]

Mon, 10 August 2009 20:44

nixnixnix
Messages: 415
Registered: February 2007
Location: Kelowna, British Columbia

Senior Member

Hey Koldo,

Thanks for your help. I found

GetExeFilePath()

so am using that for now.

Thanks again,

Nick

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