Nmap Development: Re: Banner grabbing

["'Joshua D. Abraham'" <jabra () ccs neu edu>]

On Fri, Jan 13, 2006 at 12:34:14AM -0800, Brandon Enright wrote:
> Joshua D. Abraham wrote:
> > Hey Guys,
> >
> > Currently, I am building a tool that is based on nmap. I would like to
> > be able to grab banners when performing an nmap scan. I looked briefly
> > at the code and I believe that the banners are being captured and not
> > displayed. Currently, I am using another tool to capture the banners
> > and I would like to depreciate this dependency.  My skills in C/C++
> > are very rusty and I would really like to see this as a feature in
> > nmap.
> >
> > Thanks,
> > Joshua Abraham
>
> You are looking for the Service Version flag "-sV".  Nmap will try a number
> of different payloads depending on the port and attempt to match against a
> list of regular expressions.
>
> If you are also operating system fingerprinting with "-O" you may want to
> use "-A" instead which turns on both "-O" and "-sV".
>
> Hope that helps.
>
> Brandon

Currently, I am using -A in the tool I have built. What i am looking
for is nmap to display the banners for the service not just the
version and service name.

Example:

$ telnet 127.0.0.1 22
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
SSH-2.0-OpenSSH_3.9p1 Debian-1ubuntu2

Which is different from:

$ nmap -A 127.0.0.1
Starting nmap 3.75 ( http://www.insecure.org/nmap/ ) at 2006-01-13
14:39 EST
Interesting ports on localhost.localdomain (127.0.0.1):
(The 1658 ports scanned but not shown below are in state: closed)
    PORT    STATE SERVICE VERSION
    22/tcp  open  ssh     OpenSSH 3.9p1 (protocol 2.0)

Nmap run completed -- 1 IP address (1 host up) scanned in 15.418
seconds


Regards,
Josh

> --
> Brandon Enright
> UCSD ACS/Network Operations
> bmenrigh () ucsd edu
>
>
>
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