
Originally Posted by
lovexlove
sory i mean copy files

That is more or less a single function call in just about every language.
Maybe a clone of Task Manager or Windows Explorer, or a text or image editor.
VB and C# have XNA and GDI+, making image and text editing pretty simple.
Or something that uses reflection, to make some kind of assembly probing tool lol.
A simple IDE or something.
A file encryption program.
You could make a code injection program, or .dll injector.
Make a program that compiles source code to a temporary file, injects then deletes the file.
Or have one that injects the CLR and loads your managed assembly(C#/VB .dll) into the target process.
Or do the same with a language like python or lua, embed them in a target process, or hijack their runtime in the target process if it's something like a game that
already uses it.
I'm fresh out of ideas. :/