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getprocaddress?!?! always gets null

 
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Stylo
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PostPosted: Tue Nov 10, 2009 12:27 pm    Post subject: getprocaddress?!?! always gets null Reply with quote
Code:

HMODULE hWs;
DWORD Address;
hWs = GetModuleHandle(_T("ws2_32.dll"));
Address = (DWORD)GetProcAddress(hWs,"send");


Address = 0 no matter what ?!
but when i want to get some kernel32's procedure address it's all fine...
any1?!
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Slugsnack
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PostPosted: Tue Nov 10, 2009 12:45 pm    Post subject: Reply with quote
LoadLibrary. If the module is not already mapped into memory which it won't be if your program doesn't use functions/import from it then GetModuleHandle() won't be returning a valid handle
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Stylo
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PostPosted: Tue Nov 10, 2009 1:02 pm    Post subject: Reply with quote
well look.
i inject my dll into msn process to get it's socket id
so i guess the module is already mapped to msn right?!
all i want to do is to get the address of send
the handle to the module works perfectly
but for some reason i can't get the procedure's address :s

@@@@@EDIT:
lol i'm such a retard ...
forgot removing memory's protection XDDD
my bad
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iPromise
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PostPosted: Wed Nov 18, 2009 8:23 pm    Post subject: Solution Reply with quote
Heres an example:

Code:

GetProcAddress(GetModuleHandleA("kernel32.dll"), "LoadLibraryA");


Make sure the function exists in the dll.
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&Vage
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PostPosted: Wed Nov 18, 2009 8:46 pm    Post subject: Reply with quote
Or... if you're using MSVC you may use...

Code:

DWORD fnSend = (DWORD)send;
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iPromise
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PostPosted: Thu Nov 19, 2009 6:53 pm    Post subject: Reply with quote
&Vage wrote:
Or... if you're using MSVC you may use...

Code:

DWORD fnSend = (DWORD)send;


That wont work because first of all "send" isn't defined unless you include the dll's header which I doubt he'd do. Just stick to GetProcAddress().
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Stylo
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PostPosted: Fri Nov 20, 2009 12:38 am    Post subject: Reply with quote
&Vage wrote:
Or... if you're using MSVC you may use...

Code:

DWORD fnSend = (DWORD)send;

really?
msvc can auto convert it?
thanks..
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