Any way to compress with UPX but make it difficult to decrom

ricardo · Post by **ricardo** » Mon Jul 28, 2003 5:21 am

Hi,

I want to compress a file (executable) but want t compressor (reliable one) that let me compress in some way that isnt easy to decompress the file (not at run time, i mean i dont want nobody to get out the compression and have the original one, i know its impossible, im just looking for a more difficult way).

If there is other free compressor that can do that and somebody knows it will be nice to share the tip.

Thanks

dige · Post by **dige** » Mon Jul 28, 2003 7:39 am

Hi ricardo,

you need a tool called upx-scrambler.
Or use my tool: STupX ( 4in1 compile pb and ressources, compress & scramble )
http://www.sunset-team.de/download

regards,
dige

gnozal · Post by **gnozal** » Mon Jul 28, 2003 8:28 am

The UPX scrambler only hides the UPX signature ; it does not prevent the EXE to be unpacked with some tools like GUW32 ...

Karbon · Post by **Karbon** » Mon Jul 28, 2003 9:15 am

Is there anything that does prevent such unpacking?

gnozal · Post by **gnozal** » Mon Jul 28, 2003 9:37 am

I think no packer / crypter can stop a good hacker ...
You can add checksums to your code, start different timers with different integrity checks (so the hacker thinks it works but after 10 min it don't), use antidebugger tricks, use self modifying code, and so on, but again, nothing will stop a good hacker (it only makes it harder to crack) !
Sad but true ...

Have a look at all these unpacking tools ...
http://www.absolutelock.de/construction/releases.html

Kale · Post by **Kale** » Mon Jul 28, 2003 12:25 pm

A good read:
http://inner-smile.com/nocrack.phtml

gnozal · Post by **gnozal** » Mon Jul 28, 2003 3:53 pm

or
http://www.searchlores.org/protec/protec.htm

ricardo · Post by **ricardo** » Tue Jul 29, 2003 6:00 pm

Thanks to all for your answers