This program crafts an Ethernet frame which transport an UDP datagram and then sends it through a chosen Ethernet interface. It allows to spoof both IP src address and src MAC address.
An ethernet link. To configure it:
1 - Directly connect 2 computers through an ethernet cable
2 - Assign to both computers ethernet interfaces an IP address in the same subnet
ifconfig eth0 10.0.0.1 netmask 255.255.255.0 up.
ifconfig enp0s3 10.0.0.2 netmask 255.255.255.0 up.
usage: craft srcip dstip srcmac dstmac srcport dstport ethif data
On one computer listen udp connections on 5555 port
nc -ulvvp 5555
On the other
gcc udpcrafter.c -o udpcrafter
./udpcrafter 10.0.0.8 10.0.0.2 aa:bb:cc:dd:ee:ff a2:bd:ee:a9:d7:ff 4444 5555 eth0 hello
You can check the content of the fields using Wireshark
