Build spoofed IP packets

[billie]

Hi all. I'd need to build spoofed IP packets. Do you know something about a
python implementation?
For low level packet building I already used Impacket module but if I
specify a spoofed src address during IP packet creation, module returns an
error.
Suggestions?

Regards.

 

[Sybren Stuvel]

billie enlightened us with:

For low level packet building I already used Impacket module but if
I specify a spoofed src address during IP packet creation, module
returns an error. Suggestions?

Yes, give us the error. And know that you can't build raw IP packets
unless you're root.

Sybren

 

[billie]

Yes, give us the error. And know that you can't build raw IP packets
unless you're root.

Sybren

Sorry. I forgot to paste the error:

Traceback (most recent call last):
File "C:\test\client.py", line 156, in ?
send_pkt()
File "C:\test\client.py", line 96, in send_pkt
s.sendto(ip.get_packet(), (dst, 0)) # send packet to server
socket.error: (10004, 'Interrupted system call')

Note: this only happens on Windows XP prof SP2. On Linux I got no problems.
I run the program as Administrator.

 

[Eric Nieuwland]

Traceback (most recent call last):
File "C:\test\client.py", line 156, in ?
send_pkt()
File "C:\test\client.py", line 96, in send_pkt
s.sendto(ip.get_packet(), (dst, 0)) # send packet to server
socket.error: (10004, 'Interrupted system call')

Note: this only happens on Windows XP prof SP2. On Linux I got no
problems.
I run the program as Administrator.

It's SP2. Microsoft decided allowing raw socket access is a security
threat and disabled it in SP2.

--eric

 

[billie]

It's SP2. Microsoft decided allowing raw socket access is a security

threat and disabled it in SP2.

Uhm.. I heard about that. Damn it. :-\