Packetspammer

Packetspammer Andy Green andy@warmcat.com

Packetspammer sends unencrypted broadcast packets down a mac80211 wireless interface that should be set for Monitor mode. It spams the packets down the interface as fast as it can, although you can specify a delay between packets.

At the same time it is listening for packets with a MAC of 13:22:33:44:xx:xx and will display metadata about any incoming packets (like the bitrate) and the packet contents. So if you run packetspammer on two nearby machines, they will show each other's packets like this:

RX: Rate: 54.0Mbps, Freq: 2.417GHz, Ant: 0, Flags: 10 0000: 50 61 63 6B 65 74 73 70 61 6D 6D 65 72 20 2D 2D Packetspammer -- 0010: 62 72 6F 61 64 63 61 73 74 20 70 61 63 6B 65 74 broadcast packet 0020: 23 34 37 39 31 36 20 2D 2D 20 3A 2D 44 20 2D 2D #47916 -- :-D -- 0030: 75 6C 74 72 61 63 61 74 2E 68 6F 6D 65 2E 77 61 ultracat.home.wa 0040: 72 6D 63 61 74 2E 63 6F 6D rmcat.com

Typical usage:

echo -n mon0 > /sys/class/ieee80211/phy0/add_iface iwconfig mon0 mode monitor ifconfig mon0 up packetspammer mon0

You may need to bring up your normal interface first and set its channel, eg

ifconfig wlan0 up iwconfig wlan0 channel 2

If you normal interface is associated to an AP on a particular channel, that's fine, the packet injection won't disturb the association.