Takes apart the application's assembly language and converts it into a language that you can understand and modify with a hex editor or other tools.
— Is it safe to use this programme or is it a scam?
Are you referring to the W32 Disassembler mentioned on your profile page and on your other questions? And are you talking about a physical program, or an app? Make sure you add more context to your questions, otherwise nobody will be able to answer them.