Korean Job Discussion Forums

[livinginkunsan]

I have a small freeware program, which I want to make a small change to (change the server address it is linked to). Does anyone know of a program in which I can do it? Thanks

[JustJohn]

Are you sure both servers are sending the same kind of information, and in the same format? If not, it will likely be impossible.

If so, it should be doable, but is just out of my range of expertise. There are a couple people on here who *might* know though.

[Demophobe]

You need to find out what language the program was written in and use an editor. Then you will have to recompile it and that's it.

[ttompatz]

If it's an .exe file AND you do not have the source code (just the executable) you will have to:

decompile it,
make your changes in the language it was written in,
and then compile it again.

Reverse engineering of software is not easy without the source code.

If you can find a copy of the source code it is easy to make the changes and compile your new version.

[livinginkunsan]

ya, this could be a problem. It was made by a friend of a friend, and i don't have the original source code. I am hoping it isn't too difficult to change a simple web address.

[mindmetoo]

You don't necessarily need to decompile it. A hex editor might do the trick.

http://www.sweetscape.com/articles/hex_editor.html

[livinginkunsan]

[mindmetoo]

[dogshed]

One of the places I worked we did that sort of thing
as part of the installation of some software the company
sold. As long as you are replacing it with the exact
same number of characters it should work OK.

For lots of cool tools try Cygwin. Cygwin gives you
a unix like environment within windows.

[xenok]

try to change your lmhosts file to redirect the server address it is linked to. if if the ip is not hardcoded into the source, this might be the easiest solution. and hex editors don't work on every exe file. as far as decompiling it, unless it's a very simple program; reverse engineering might be your only option.

good luck.

[ulmaeri]

If you have a debugger, you can trace the program and find where in the exe it is calling the address. That should help with the hex editing.

[livinginkunsan]

thank you guys for all the helpful responses. I figured it out