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Re: nse crypto
From: Patrik Karlsson <patrik () cqure net>
Date: Sat, 12 Mar 2011 17:32:11 +0100



Den 2011-03-12 16.56 skrev Toni Ruottu <toni.ruottu () iki fi>:

Here is a new version that uses the brute library. I did not notice
any speed ups, but using the library seems a good idea anyway, as it
makes this work similarly to other scripts.

Should the library replace an empty password with <empty> when it is
reporting results? I though I should not do that, as the library could
define a standard way for doing such things.

The library should replace an empty password with <empty>. In case it
doesn't this is a bug.
I don't have a nping server setup myself to test this though.
I've tested the script against the IP below and it works for me.
I get roughly one try per second.


On Fri, Mar 11, 2011 at 10:25 PM, David Fifield <david () bamsoftware com>
wrote:
On Fri, Mar 11, 2011 at 02:29:39AM +0200, Toni Ruottu wrote:
I got the script written using openssl. In the end the crypto was
surprisingly manageable, compared to dealing with IPv6 addresses. :-)

I have attached the script to this email. I am running an instance of
nping echo server with password 12345 at 174.129.239.201 Feel free to
test the script against it by commanding

nmap 174.129.239.201 -p 9929 --script=nping-brute

Trying out passwords is somewhat slow, so testing with really easy
ones may be a good idea. Add -d -d to the command line to see
progress.

I tried it. It found the correct password after three guesses in 6
seconds. It seems to do about 1 guess per second on another server.

I think the way to speed it up is to use the brute.lua library. See
Patrik Karlsson's brute scripts for examples of using it.

David Fifield

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//Patrik


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