import from DLL compiled by VC++

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znatz

Joined: 08 Jul 2012
Posts: 13
Location: 日本

znatz 24 Sep 2012, 08:52

I am trying to import a DLL that was created by me under the VC++.

FASM compiled for me without errors.
However when I run the exe. It keeps giving the error,

The procedure entry point cound not be located in the dynamic link library.

Is there a specification to write dll under C++,
so that FASM will recognize my dll entry point?

24 Sep 2012, 08:52

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20759
Location: In your JS exploiting you and your system

revolution 24 Sep 2012, 09:04

Show your code.

24 Sep 2012, 09:04

DOS386

Joined: 08 Dec 2006
Posts: 1904

DOS386 24 Sep 2012, 09:24

znatz wrote:

The procedure entry point cound not be located in the dynamic link library.

Typo in function name Smile

PS: use some tool to inspect PE exports and imports.

24 Sep 2012, 09:24

znatz

Joined: 08 Jul 2012
Posts: 13
Location: 日本

znatz 24 Sep 2012, 09:57

Thank you.

Description:		Download
Filename:	usedll.asm
Filesize:	241 Bytes
Downloaded:	530 Time(s)

Description:		Download
Filename:	dllmain.txt
Filesize:	515 Bytes
Downloaded:	488 Time(s)

24 Sep 2012, 09:57

l_inc

Joined: 23 Oct 2009
Posts: 881

l_inc 24 Sep 2012, 11:31

znatz
Use

Code:

extern "C" __declspec(dllexport) foo

to declare foo and use cinvoke to call foo.

P.S. Sorry, didn't notice, that you have a 64-bit output. In this case cinvoke is not necessary.

24 Sep 2012, 11:31

znatz

Joined: 08 Jul 2012
Posts: 13
Location: 日本

znatz 24 Sep 2012, 12:26

l_inc wrote:

znatz
Use
Code:
extern "C" __declspec(dllexport) foo    
to declare foo and use cinvoke to call foo.

P.S. Sorry, didn't notice, that you have a 64-bit output. In this case cinvoke is not necessary.

Great, it works! Thank you!

I never thought of it.

24 Sep 2012, 12:26

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