Noob Question on Debugging DLL

[TechLord]

Originally Posted by psgama

...
... How can I break on calls to this DLL to see what manipulation is being performed on the data being passed through to it with ollydbg?

1. "Search for all intermodular calls" in Olly would help (Under Search For, after right-clicking in th eolly main window) . There, look for all calls in to the dll that you want. And put BP as necessary.

OR

2. Go to Debug Events in Olly Debugging Options and configure it to "Break on new module" .
It will break whenever a dll is loaded, in this case....

3. For .Net it is better to use Reflector, though you stated that the dll is in VB6.
Have you tried using VB Decompiler to decompile the VB6 dll ?

These are all good starting points.