Re: simulate connection with netcat

[Felipe Martins <martins.felipe.security@xxxxxxxxx>]

When you try to connect to a SSH Server it exchanges a session key, you 
would have to give that to the server before authentication.
Like Salva said, it's far more complicated than that.

Best Regards

---
Felipe Martins
Security Analyst

Skype: martins.felipe
URL: http://www.felipemartins.info/
E-mail: martins.felipe.security@xxxxxxxxx


On 17/01/2011 15:43, Salvador Fandino wrote:
> ----- Original Message ----
> > From: "guy@xxxxxxxxx"<guy@xxxxxxxxx>
> > To: secureshell@xxxxxxxxxxxxxxxxx
> > Sent: Sat, January 15, 2011 9:19:15 PM
> > Subject: simulate connection with netcat
> >
> > Hello,
> >
> > my long-term intention is to write a cross-platform  GUI-authpf-client
> > without using libssh or libssh2. Before I get into that I'd  like to simulate
> > the ssh-connection/authentication via netcat.
> > I took a  look at the RFCs but don't get it working.
> >
> > % nc 127.0.0.1  22
> > SSH-2.0-OpenSSH_5.2
> > SSH-2.0-OpenSSH_5.2<--  entered by me
> > ... a lot of text ...
> >
> > What do I enter now to  authenticate?
> > My attempts resulted in "Packet  corrupt".
> SSH uses a binary protocol. Getting authenticated is far more complex than
> writting something at your keyboard by hand.
>
> You can find pointers to the related RFCs here:
> http://en.wikipedia.org/wiki/Secure_Shell
>
> - Salva