MITM Router – Man in the middle Router
Turns any linux computer into a public Wi-Fi network that silently mitms all http traffic. Runs inside a Docker container using hostapd, dnsmasq, and mitmproxy to create an open honeypot wireless network named “Public”.
For added fun, change the network name to “xfinitywifi” to autoconnect anyone who has ever connected to those networks… they are everywhere.
mitm-router randomizes the MAC address of your
AP_IFACE to anonymize your network device. This can be disabled with the
MAC="unchanged" environment variable. You can also explicitly set the
AP_IFACE MAC address with
Supported environment variables are listed below with their default values:
# wireless device name that will be used for the Access Point AP_IFACE="wlan0" # device name that is used for the router's internal internet connection # packets from AP_IFACE will be forwarded to this device INTERNET_IFACE="eth0" # wireless network name SSID="Public" # optional WPA2 password; if left empty network will be public PASSWORD="" # optional randomization of AP_IFACE MAC address # can be set to a specific value like "XX:XX:XX:XX:XX:XX" # or "unchanged" to leave the device MAC alone MAC="random" # tcpdump output file location inside the container CAPTURE_FILE="/root/data/http-traffic.cap" # optional mitmproxy filter # see http://docs.mitmproxy.org/en/stable/features/filters.html FILTER=""
This access point runs inside of Docker for isolation, ensuring that any vulnerabilities that may be exploitable in the access point will not allow an adversary access to your computer or home network. That said, there are a few caveats to be aware of:
--net hostshares all of the network interfaces and
iptablesentries from the host machine with the docker container. Assume that a vulnerable docker container would have root access to these devices.
- Running in
--privilegedmode gives extended permissions to the docker container
- Your host machine (the one running docker) will be accessible on the “Public” network as a connected client. For this reason, please use a firewall (
ufwon linux) to block incoming traffic on all ports so that computers on the “Public” network do not have access to exposed services your machine.
- All traffic on the honeypot network will be outbound from you home network’s gateway. If someone on the “Public” network is torrenting or conducting illegal activity you will be held accountable and your ISP may cancel your service.
For added security, I prefer to run this docker container on a dedicated computer, like a Raspberry Pi.
# clone the repo git clone https://github.com/brannondorsey/mitm-router cd mitm-router # build the image this step can be omitted if you prefer to pull # the image from the docker hub repository docker build . -t brannondorsey/mitm-router
Run the following, replacing
INTERNET_IFACE with your wireless device and internet-connected ethernet/wireless devices respectively. You can can get see the name of your network devices by running
# run the container docker run -it --net host --privileged \ -e AP_IFACE="wlan0" \ -e INTERNET_IFACE="eth0" \ -e SSID="Public" \ -v "$(pwd)/data:/root/data" \ brannondorsey/mitm-router
If all went well, you should see something like this:
Current MAC: a5:ae:f9:a4:b7:e3 (TP-LINK TECHNOLOGIES CO.,LTD.) Permanent MAC: a5:ae:f9:a4:b7:e3 (TP-LINK TECHNOLOGIES CO.,LTD.) New MAC: 00:d2:6b:d5:fe:bd (PHOTRON USA) [ ok ] Starting system message bus: dbus. [ ok ] Starting DNS forwarder and DHCP server: dnsmasq. [ ok ] Starting advanced IEEE 802.11 management: hostapd. Proxy server listening at http://0.0.0.0:1337
mitm-router transparently captures all
HTTP traffic sent to the router at
10.0.0.1:80. It does not intercept HTTPS traffic (port
443) as doing so would alert a user that a possible man-in-the-middle attack was taking place. Traffic between URLs that begin with
https:// will not be captured.
mitm-router/data/ folder is shared with the docker container so that we can view the capture files that it places there on our host machine. By default, you will find the
mitmdump capture file in
You can also connect your
INTERNET_IFACE to a hostpot running on your phone for mitm pwnage on the go 😉