full-disclosure - Re: In-band signalling (was: Re: NuralStorm Webmail Multiple Vulnerabilities)

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Date: Sat, 17 Jul 2010 17:06:38 -0700
From: coderman <coderman@...il.com>
To: Dan Kaminsky <dan@...para.com>
Cc: "full-disclosure@...ts.grok.org.uk" <full-disclosure@...ts.grok.org.uk>
Subject: Re: In-band signalling (was: Re: NuralStorm
	Webmail Multiple Vulnerabilities)

On Sat, Jul 17, 2010 at 3:31 PM, Dan Kaminsky <dan@...para.com> wrote:
> ...
> And nobody tunnels like telephony guys. If they ain't encapsulating,
> they ain't living.

are you making fun of my ATM AAL5 VBR IPoATM bearer established via
AAL2 VBR SSCOP out-of-band-and-works-fine-thanks signaling channel?

 ... it's just a little misunderstood.

> ...
> I'm having some good experiences with protocols that move around
> Base64-encoded blocks. The key is to not encrypt the block, because
> man, you're never finding the key during debug.  Even then, it's being
> an interesting challenge to make standard tools unpack for debugging.

replay debugging with a virtual machine monitor is a great tool in
this regard. it is also indispensable when tracking down race
conditions or other intermittent failures.

just replay to desired pre-fail point and inspect execution from host,
easily extracting keys or other memory structures and altering state
with jump to "live"*.

best regards,

* with "live" being sort-of like a true resume at execution point.
network sockets, timers, and other aspects of runtime state cannot be
replicated in such a manner, but otherwise, this capability works
nicely.

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