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Re: [Full-disclosure] .NET REMOTING on port 31337

From: Fabrizio (staticrezgmail.com)
Date: Fri Sep 28 2007 - 13:47:21 CDT


Yeah! Stand there and risk come confidential data being compromised! Monitor
and Capture them stealing our customer info! Then try and get it back!

Come on man. It's a pen-test, and there are NDA's in order. Don't take the
chance.

On 9/28/07, Joel R. Helgeson <joelhelgeson.com> wrote:
>
> I disagree, don't block access to the port. Monitor and capture it.
>
>
>
> Joel's First rule of forensics: Don't just do something, stand there!
>
>
>
> Watch it, monitor it. If it is a crafty backdoor, there are dozens of
> others to enable bad guys to regain entry.
>
> Blocking lets the hacker know you might be on to them. IF it is legit,
> then it could cause a problem.
>
> Telnet to the port, see what it says on connection; run fport or
> sysinternals utilities on the box to see the stack the program uses.
>
>
>
> -joel
>
>
>
> *From:* full-disclosure-bounceslists.grok.org.uk [mailto:
> full-disclosure-bounceslists.grok.org.uk] *On Behalf Of *Fabrizio
> *Sent:* Friday, September 28, 2007 1:31 PM
> *To:* Full-Disclosure
> *Subject:* Re: [Full-disclosure] .NET REMOTING on port 31337
>
>
>
> If you think it's that critical, (i think it's that critical) start by
> blocking any connections from anywhere to that machine/port. See if anyone
> complains. Check any old firewall logs for that port while you're at it.
> Then continue your investigation!!
>
> Fabrizio
>
> On 9/28/07, *Simon Smith* <simonsnosoft.com> wrote:
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Got output... and it was... no idea what it was... can't paste it due to
> confidentiality though.
>
> Fabrizio wrote:
> > .NET Remoting is "a generic system for different applications to use to
> > communicate with one another." It's part of the .NET framework,
> > obviously. (not trying to be a smart ass)
> >
> > I'm gonna take a wild guess and say it's not a good thing......
> >
> > Connect to it, and see if you get any output, if you haven't already
> > done so.
> >
> > Fabrizio
> >
> >
> >
> > On 9/28/07, * Simon Smith* < simonsnosoft.com
> > <mailto:simonsnosoft.com>> wrote:
> >
> >
> > Has anyone ever heard of .NET REMOTING running on port 31337? If so,
> > have you ever seen it "legitimate"?
> >
> >
>
> _______________________________________________
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> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
> <http://lists.grok.org.uk/full-disclosure-charter.html>
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>
>
>
> > ------------------------------------------------------------------------
>
> > _______________________________________________
> > Full-Disclosure - We believe in it.
> > Charter: http://lists.grok.org.uk/full-disclosure-charter.html
> > Hosted and sponsored by Secunia - http://secunia.com/
>
>
> - --
>
> - - simon
>
> - ----------------------
> http://www.snosoft.com
>
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_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
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