🚀 go-pugleaf

"Alex McDonald" <alex_mcd@btopenworld.com> wrote in message news:
> > Yes, the program I have to write really looks like a virus.
> >
> > I am a trainee in a IT company, and my training subject is to write an
> > Windows EXE protection program. This program must encrypt the
> > executable's code section and add a decryption routine inside the
> > executable.
> >
> 
> Why? Are they in the virus business? There's plenty of ways to protect their
> intellectual property without writing a virus look-alike. Use a product that
> doesn't look like a virus and that works -- try googling on "exe encryption"
> for examples.

No, they are not in the virus business.
They just want to develop themselve their protection program (and own
the source code). I looked for examples on the internet, but most of
them aren't free.


> > The first approach I tried was to make a kind of winzip
> > self-extractor. The main problem is that a temporary file is required
> > : it is not a very secure solution :-( The other main problem is that
> > it's always crashing :-((.
> >
> > The virus-like approach seems to be the most interesting (and easy)
> > because the decryption job is done in memory and don't need a
> > temporary file. There is also some common virus sources available on
> > the internet, so a part of the job is already done :-)
> 
> Your company would be mad letting you write something based on a virus.

My boss said that it is a way that should be explored.
I am just a trainee :-)


> > The main problem is that it seems that assembly language is required
> > and I still have some troubles with absolute and relative addresses.
> > The other main problem is that I fear my program will be seen as a
> > virus by antiviruses.
> >
> 
> Even more sucking of teeth... if you use any of the widely available virus
> sources, that's definitely true. If you've think you've got problems with
> relative and absolute addresses, just think how it's going to be with the
> police when they visit.

Why ? I do nothing illegal ! I am NOT developing a new virus. I am
looking for a way to protect an EXE file. When I looked for examples
on the internet, the only examples I found were virus-related.

Now, if you have any other idea for protecting executables, I will be
happy to have it.