Originally Posted by kemaletikan

Hi fellas,
I have a question about disassembled code. I have a very simple assembly code that prints "Hello world" to screen. When I disassembled it by using nasm(ndisasm), I got a text file. After that I opened it and started to analyze it. However, in a section that comes after " int 0x80" there are a lot of "add [bx+si],al" statement. What does it means? Can you explain me?

Originally Posted by gerard4143

Depends really...it could be a bunch of data that the de-compiler is having trouble with...more likely, its just the header or footer information that comes with every executable...If you want to look your code try objdump instead. Objdump conveniently removes all this extra data...

Originally Posted by kemaletikan

thanks for your help. I tried objdump and I got a clear code. add [bx+si],al are lost. Are you sure it is de-compiler problem? Can it be something important about program?
The program writes on screen. Can it be related with writing operation?

Originally Posted by gerard4143

Like I said its probably the header or footer information that's added to the exe. This information. header/footer is used by the linker and operating system...

If you really want to see what's in your file then open it in a hexeditor and check the result against the objdump. You'll easy see where the header, footer and your code begins and ends.

Originally Posted by kemaletikan

Thanks pal, you are really for me. I appreciate it.
Best regards.