I'm currently creating my first Windows Device Driver "Hello world." activity. I'm using Microsoft Visual Studio 2012.

Question

How do I generate a .sys file so that I can load it in the OSRloader?

Answer 1

A .sys file is basically a .dll file that only depends on the kernel.

You'll need the Windows Driver Kit's libraries (especially ntoskrnl.lib).
Open up the project properties and:

1. Select Linker->Input, then change Ignore All Default Libraries to Yes.
2. Select Linker->Input, then add ntoskrnl.lib to Additional Dependencies.
3. Select Linker->System, then change Driver to to Driver, and Subsystem to Native.
4. Select Linker->Advanced, then change Entry Point to DriverEntry.
5. Select Linker->Advanced, then change Image Has Safe Exception Handlers to No (if it's there).

Do these for both Debug and Release configurations (you might not be able to use the Debug build).

Then build. You may also need to add other libraries (e.g. BufferOverflowK.lib).