Proxy

[Ardy]

Hi,
I am trying to write a proxy for a DLL in MASM32. I have written a simple program that uses the method gethostbyname from ws2_32.dll. In my proxy DLL I have my own method gethostbyname, it first gets a handle to the real ws2_32.dll which I have copied to my test directory and renamed to ws2_32_.dll then it gets the method by using GetProcAddress. I also make sure the call stack is correct, this method has only one parameter which I push to the stack before calling. After the call to this address retrieved from GetProcAddress I receive an exception 0x000006C5, which means acces violation. if I replace de proxy with the original DLL then the program works properly. Please help me for I don't know what I am doing wrong.

[clive]

Absent you providing any source code to examine, I'd have to guess that you are not providing the parameter correctly.

[rags]

Why not just call  the function directly, instead of creating a wrapper dll that calls the function?

[BlackVortex]

Why not just call  the function directly, instead of creating a wrapper dll that calls the function?

He wants to make a proxy dll to monitor/intercept the function that resolves the hostname.

Interesting.  :bg

[dedndave]

yes - a nice first post   :P