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In-Reply-To: <5a745b381650978f29cb650757ffa3c4acc62f49.camel@Askesis.nl>
From: Olivia Nelson <the DOT warl0ck DOT 1989 AT gmail DOT com>
Date: Sat, 8 Feb 2020 08:12:32 +0800
Message-ID: <CAJZVxR==EeX0y02Y5_ZhoFKnFCMmONg_-7jzv93pZqmrSdK-pA@mail.gmail.com>
Subject: Re: DllMain not called in CreateRemoteThread
To: cygwin AT cygwin DOT com
Content-Type: text/plain; charset="UTF-8"
X-IsSubscribed: yes

Sorry, I made a mistake. I've updated the title ..

To summarize:

1. I can load the DLL compiled with cygwin with LoadLibraryA,
     but not remotely with CreateRemoteThread.
2. The same DLL compiled with msvc works with both LoadLibraryA and
CreateRemoteThread

Answer to Joost:
constructor and destructor are called with LoadLibraryA, but not with
CreateRemoteThread either

Answer to Marco
1. I can't use mingw, it does not provide sys/XXX.h, e,g socket
2. I copied cygwin1.dll to system32, and it works outside cygwin environment

Here's a implementation of the DLL injector in C#:
https://codingvision.net/miscellaneous/c-inject-a-dll-into-a-process-w-createremotethread


On Sat, Feb 8, 2020 at 3:10 AM Joost Kraaijeveld
<J DOT Kraaijeveld AT askesis DOT nl> wrote:
>
> Does
>
> static void __attribute__((constructor))
> static void __attribute__((destructor))
>
> work?
>
>
> See e.g.
> https://stackoverflow.com/questions/2053029/how-exactly-does-attribute-constructor-work
>
>
>
>
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