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Re: [Paper] New Idle Scan Techniques
From: Mathias Morbitzer <m.morbitzer () student ru nl>
Date: Tue, 28 May 2013 15:08:50 +0200 (CEST)

----- Original Message -----
From: "David Fifield" <david () bamsoftware com>
To: "Mathias Morbitzer" <m.morbitzer () student ru nl>
Cc: dev () nmap org
Sent: Monday, 27 May, 2013 11:33:52 PM
Subject: Re: Re: [Paper] New Idle Scan Techniques
On Mon, May 27, 2013 at 11:24:55AM +0200, Mathias Morbitzer wrote:
My name is Moe, I'm currently working on my thesis to finish my
studies in computing security. In my work, I analyzed if the TCP
Idle
Scan can be ported from IPv4 to IPv6. To tell you the answer: With
some modifications, yes, it can!

An article and my final thesis with the details are planned to be
published in summer/fall.

But enough of the advertisement. After creating a proof of concept
with scapy, I would like to implement the TCP Idle Scan in IPv6 in
Nmap, but I have a hard time on deciding which implementation method
to choose: Implementing it directly in the Nmap-core or creating a
lua-script. For me, the more logical would be the core, but then I
found this post from Henri in which he patched Nmap so that he can
create the RST rate limit scan with NSE. (Which is somehow similar
to
the TCP Idle Scan in IPv6)

Now, my question is: Which way of implementing my scan would you
recommend?

Writing in Lua and NSE is likely to be better for prototyping your
idea.
The infrastructure to allow NSE to set port states is not in place.
But
what you can do is make a hostrule script that does the idle scan and
then displays the results as ordinary script output.

David Fifield

I tried now to understand idle_scan.cc, and I discovered that a lot of the functionality that I need to implement for 
my scan already exists in there. 
In fact, to get my scan working, I mostly have to add some things, but I can use basically everything what is in there. 
 
Also, I already have a prototype for my scan, so now I would like to implement "the real thing". 

Therefore, I decided that I will try to extend the C++ code. 

Thanks for helping me making a decision. I hope I can soon provide a patch for the new idle_scan.cc. Further comments 
and ideas are welcome! 


Regards,
Moe

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