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NASM Forum => Using NASM => Topic started by: nobody on September 05, 2005, 11:46:25 PM

Title: Simple win32 NASM app crashes
Post by: nobody on September 05, 2005, 11:46:25 PM

I am sorry I posted this as anon in such a stupid hurried manner, but I've sent a registration to here and hope to post much more, now that I have found this. I am trying to assemble myself a win32 app at the moment. So I:

C:\>nasm -fwin32 hi.asm
C:\>alink -oPE C:\Development\ALINK\win32.lib -entry _WinMain@16
C:\>hi.exe

It does everything fine. And then crashes. In the debugger, I have found that it crashes INSIDE the CreateWindowExA call somewhere. It ends up looking like:


CALL <== Crashes here, never returns

; Error: Don't know how to continue because
; memory at address 00000024 is not readable.
; Try to change EIP or pass exception to program.

TEST EAX,EAX ; Never gets here
JNZ SHORT hi.00401098 ; Never gets here


I have no idea what could have gone wrong. The code is copied from ftp://ftp.szif.hu/pub/demos/tool/gijnwt2.zip (http://ftp://ftp.szif.hu/pub/demos/tool/gijnwt2.zip) and the source to the one I did can be found here: http://zxcvbn.t35.com/win32app.txt (http://zxcvbn.t35.com/win32app.txt) of course, it crashes on the CreateWindowEx call again. Perhaps I imporperly linked the app? Or assembled it? I am all very confused as to what happened.

Title: Re: Simple win32 NASM app crashes
Post by: nobody on September 06, 2005, 04:47:50 AM

Hey

Title: Re: Simple win32 NASM app crashes
Post by: nobody on September 06, 2005, 05:16:36 AM

Thanks for helping Nobody/Anonymous.