[Mingw-users] Re: How do I change the subsystem of an executable?

[Paul M. <pf_...@ya...>]

Danny Smith <dan...@cl...> writes:

> | Paul Moore wrote:
> |
> | > Sorry - maybe I wasn't clear. I am not building from source, but
> | > editing an existing executable. I don't have an easy way of
> | > rebuilding the application, so I just need to change the
> | > subsystem flag.
>
> If you have the  MS utility editbin, then try editbin /?

I do have editbin, at work anyway, but I was hoping to find an open
source equivalent...

Christof Petig <chr...@pe...> writes:

> Earnie Boyd schrieb:
>> I don't remember which byte in the executable header; but it is
>> possible to do the binary edit.  It has been discussed on this list
>> many many months and into years ago.
>
> this is the program we (MAGuS project) use to switch it.

Thanks - that helps a lot. With this, I can write something to do
what I want, and it's simple enough that it isn't an issue to do so.

Earnie - I did try searching the archives, but I didn't manage to
find the right combination of search terms to locate anything...

[Later] Actually, a bit more experimenting leaves me somewhat
puzzled. It doesn't seem that simple. For example, I have a program
(gnudoit.exe) which displays as a console app using MS's DUMPBIN or
Mingw's objdump, but which has a zero at offset 0xdc. MSDN documents
a PE format which looks a bit more complex than just a fixed-offset
format. This is starting to look harder, which is why I was hoping
that it already existed - but if it doesn't, I'll either do without
or write something for myself.

Thanks for the information, anyway.

Paul.
-- 
I don't know anything about music. In my line you don't have to. --
Elvis Presley