BackTrack in your back pocket pps

BackTrack in your back pocket or Accessing a BackTrack server via mobile phone in some vaguely secure way The Objective Set up a Backtrack system that is accessible over the internet from the phone in my pocket. What can I say? I like to practice my metasploit syntax while waiting in the doctor's office. Oh, and I'd also like to do it as cheaply as possible and in some relatively secure fashion. The Solution BT4 R2 under VMWare This would allow me to move it around as well as maintain a “Known Good” snapshot VNC and SSH This would allow me to access the system from any computer that had a tunneling ssh client, specifically my phone Secure it a good password, changed frequently (even better to use certificate authentication for ssh) frequent reverts to the “Known Good” snapshot tunnel VNC through SSH changing the default SSH port from tcp/22 port knocking in order to gain access note: sample configuration files will be in the Speaker Notes where appropriate First, you will need BackTrack "BackTrack is a Linux security distribution." "Whether you’re hacking wireless, exploiting servers, performing a web application assessment, learning, or social-engineering a client, BackTrack is the one-stop-shop for all of your security needs. BackTrack is a Linux-based penetration testing arsenal that aids security professionals in the ability to perform assessments in a purely native environment dedicated to hacking." This was all cribbed directly from their website: http://www.backtrack-linux.org This is also where you can download the latest release. Make sure you download the one for VMWare. (I know. I know. It doesn't really matter for you hardcore geeks) Why VMWare? VMWare allows us to not have to dedicate a whole system to just BackTrack. BackTrack has been kind enough to provide a VMWare virtual appliance. VMWare also provides us the the ability to take a "snapshot" of the system. This means if the system ever gets breached or you screw up configuration you can always return to your "Known Good". Booting up under VMWare You can download VMWare Player for free (with registration) from: http://downloads.vmware.com/ Extract the BackTrack files and open up the one with the ".vmx" extension. Login with userid: root / password: toor No need to start XWindows, but if you really want to, type: startx 'toor'? Really? You gonna keep that? The default password is 'toor'. Change this immediately with: passwd Configure the local firewall We want to setup the BackTrack firewall to block all but necessary traffic. You will need to decide now which ports you are going to use for port knocking and ssh. In this example we will use the following: port knocking: tcp/1111, tcp/2222, udp/3333 ssh: tcp/4444 Feed your config file to iptables-restore iptables-restore < /etc/iptables.rules * sample configuration file in the Speaker notes Enable Networking The BackTrack server is configured for DHCP, but the interface is disabled by default. You can enable it with: /etc/init.d/networking start For static IP address you will need to edit: vi /etc/network/interfaces * You can set networking to auto-start on a reboot with: update-rc.d networking defaults * sample configuration file in the Speaker notes Update BackTrack Now that we have internet access, it's a good time to get the OS up to date. apt-get -y update apt-get -y upgrade apt-get clean [...]... http://www.no-ip.com/ Configure the your Internet router Your internet or wireless router will need to be configured to forward external ports for both SSH and port knocking to the BackTrack system This is usually available in your router administration Client side That is it for the server You now have it configured for port knocking, ssh, vnc and remote access over the internet Now it's time to configure... allows for tunneling VNC http://www.zinger-soft.com/iSSH_features.html Android clients For ssh/vnc use ConnectBot ConnectBot For port knocking use knock-android Knock-Android Amaze your Friends and Family Amaze yer friends with your incredible 500P3R L337 H4X0R skills Troubleshooting Flush all iptables rules /sbin/iptables policy INPUT ACCEPT /sbin/iptables policy OUTPUT ACCEPT /sbin/iptables policy... port After you are finished using ssh, you send it a different sequence to close the port again We will use knockd as our port knock server http://www.zeroflux.org/projects/knock http://www.portknocking.org/ Port Knocking install and configuration To install knockd: apt-get install knockd Edit the config file to set-up the ports you want to use: vi /etc/knockd.conf Start knockd in daemon mode: knockd... snapshot in VMWare and come back to exactly this point in your configuration VM -> Snapshot -> Take Snapshot Dynamic DNS If you don't have a static IP address you will probably want to setup dynamic DNS on host This is a free service that will keep a hostname always registered to whatever your current, ISP assigned, IP address You can run the client on any machine behind your router There are many options... ssh server and set it to auto-start on a reboot /etc/init.d/ssh start update-rc.d ssh defaults Advanced configuration using certificate based authentication is at the end of this presentation * sample configuration file in the Speaker notes Port Knocking You can think of port knocking as a "secret knock" used to remotely open and close the ssh port Backtrack will start with all ports closed After you...Enable and configure SSH SSH will be your primary access to BackTrack Luckily most of the tools you will use in BackTrack are run from command-line anyway Edit the config file to change the default SSH port * vi /etc/ssh/sshd_config Generate your ssh encryption keys (Do not enter passphrases) ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key... knocking and one for ssh/vnc My examples will be for the iPhone, but most smart phones will have these types of clients available Links for Android clients are listed later iPhone:Install and configure KnockOnD I chose KnockOnD as my port knocking client Mainly because it's free, ad free and it works http://bluezbox.com/knockond.html iPhone : Install and configure iSSH iSSH is not free As of this writing... ACCEPT /sbin/iptables policy FORWARD ACCEPT /sbin/iptables -F verify SSH is working without the rules verify knockd, ssh, vnc are running ps ax | grep knockd Troubleshooting verify ports netstat -an verify iptables iptables -L -n kill processes killall knockd killall sshd vncserver -kill :1 Advanced: SSH Certificate Authentication Server setup Change into your local ssh config directory cd /root/.ssh... ssh server cp id_rsa.pub authorized_keys Advanced: SSH Certificate Authentication Client setup Copy your public key to an iPhone note cat /root/.ssh/id_rsa Sync your iPhone and copy the note to your iPhone clipboard Import (Paste) it to iSSH from General Settings > Configure SSH Keys > Import Key Change your Connection to "Use Key" authentication Verify connectivity Advanced: Disable Password Authentication... file in the Speaker notes Start VNC Even though we will rarely use a gui or XWindows, why not have it? At the very least, it looks more impressive when you show off Start VNC (you will be prompted to set a password): vncserver We will access VNC through an SSH tunnel Take a picture, it'll last longer Take a VMWare snapshot and call it "Known Good" Every now and again you can restore this snapshot in . BackTrack in your back pocket or Accessing a BackTrack server via mobile phone in some vaguely secure way The Objective Set up a Backtrack system that is accessible over the internet. BackTrack " ;BackTrack is a Linux security distribution." "Whether you’re hacking wireless, exploiting servers, performing a web application assessment, learning, or social-engineering a. social-engineering a client, BackTrack is the one-stop-shop for all of your security needs. BackTrack is a Linux-based penetration testing arsenal that aids security professionals in the ability to perform