Creating an export table

[Nacho_dj]

Hello:

I would like to patch in memory an application, in order to configure an export table. Then I could use it to import some functions from an external application, in order to use some code of the patched application.

First, I launch the application with a loader. The application is packed.
When it is loaded, I write in the memory of the target process the configuration of the entire export table.

When trying to import some functions of that export table with the loader, I do the following:

I do LoadLIbrary of that application (it is an .exe file), then I want to GetProcAddress some functions of that table.

However, this is not working. Not providing any handle but nil.

I do not understand why. Maybe it is because the export table couldn't be created patching in memory when the process is already loaded.

Do you have suggestion? Is it a better way to do that? I do not know if this could be performed with hooks...

Cheers


Nacho_dj