[DUG] Binary DLL manipulation

[Ross Levis]

This may be a strange request, but my Delphi app uses an old C++ DLL which I
commissioned an outside developer to write for me some time ago.  I've lost
the source code and cannot get a hold of the developer to see if he has it
stored.

 

The only issue with it, it is opening a file in read/write mode, although it
is only ever reading the file.  I need it to open the file in read-only
mode.  Anyone with a little hacking skills should be able to modify the
CreateFile() integer parameter call stored in the binary DLL file.

 

Is anyone up for doing that for me, perhaps for a $50 donation?

 

I remember doing something similar like 30 years ago with MS-DOS utilities
which had version checks inside to prevent them being run on later versions
of DOS.  I worked out the sequence of code for the INT 21H dos calls in a
HEX editor.

 

Cheers,

Ross.

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