Packet Squirrel

On these days I could get my hands on a really cool device from hak5, the Packet Squirrel, which can be used for an Ethernet man-in-the-middle attack, being able to use it as a sniffer or to get remote access to a network.

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This tiny device has a button to turn it in, an Ethernet in port, an Ethernet out port, a microusb por for power, a usb port for storage and a switch to select which of the payloads to run.

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squirrel

The default payloads the packet squirrel has are:

  • TCP Dump: . It allows the user to display TCP/IP and other packets being transmitted or received over a network
  • DNS Spoof: Alters the DNS directions from the victim to show a different page
  • OpenVPN: Provide remote acces to the network or client tuneling

To use de TCP dump you just need to select the first payload, moving the swithc until the left and connect it to the device you want to see the traffic. Then the led will start to flash yellow indicating it is saving the traffic in the usb flash until you push the button to indicate you are done. Finally plug the usb to you PC to see a pcap file, which you can inspect the traffic with a protocol analyzer, like Wireshark.

dumptrafico

In the case of the DNS spoof you need to enter the arming mode of the packet squirrel (rightmost side), and configure the spoofhost file with the domain and the ip you want to set.

putty

With the OpenVPN you can provide remote access to the network, the target device will have access to the network in the Ethernet out port without interruption, the OpenVPN will be established enabling remote acces to the pcket squirrel

Also it can be used to tunnel the traffic from the target device through the OpenVPN connection, by changing the configuration to allow 1 client.

sjfad

To set the OpenVPN server side there is a set of videos from hak5 that can be quite useful.

From the shell in the cloud server you need to write to start setting the OpenVPN

wget https://git.io/vpn -o openvpn.sh && bash openvpn.sh

This will generate a client.ovpn file that needs to be copied on /root/payloads/switch3/config.ovpn. With all that you can try the OpenVPN moving the swith of the packet squirrel to the third position.

From all I could see while using the Packet Squirrel I think it is a great device, it is really small, so you can carry it easily with you, it is simple to use, just moving the switch to adifferent position and it can be configured in no time with the default payloads or create your own payloads.

 

*I didn’t receive any money for this post.

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