Packed Clients

hey guys

servers owners are packing the client
and packing sro_client.exe even the launcher.exe
my Question is how could they packing it

Note: even changing text files names inside server_dep

could anyone share a guide or maybe
give us a tips or something else?

mostly asm editing with tools like OllyDbg.
You can search for strings and change them and that's probably where they change file names.

Executable compression - Wikipedia, the free encyclopedia
This is a list of a few packers there are many more and many different types of packers but they basicly just change the code so you can't read it while the cpu still can. The problem with packing is is since the cpu can still read it so it can be unpacked.

But there are a few good packers which makes it really really hard to unpack an exe.

Edit: Someone correct me if I said something incorrect I'm not that familiair with this stuff