This can be useful when travelling.
Function
You can put this in your .zshrc/.bashrc/etc.
spoof () {
CRED='\033[0;31m'
CBLUE='\033[0;34m'
getmac () {
ifconfig "$1" | grep -o -E '([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}'
}
macorig=$(networksetup -getmacaddress "$1" | grep -o -E '([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}')
macprev=$(getmac "$1")
macrand=$(openssl rand -hex 6 | sed 's/\(..\)/\1:/g; s/.$//')
sudo /System/Library/PrivateFrameworks/Apple80211.framework/Resources/airport -z;
sudo ifconfig "$1" ether "$macrand"; networksetup -detectnewhardware;
macnass=$(getmac "$1")
echo "Original MAC: ${macorig}";
echo "Previous MAC: ${macprev}";
echo "Your new MAC: ${CBLUE}${macnass}";
if [ "${macnass}" == "${macprev}" ] ; then
echo "${CRED}ATTENTION: NO NEW MAC ASSIGNED DUE TO LAG IN OS X";
fi
}
Description
spoof <adapter>
The function generates a random MAC address, handles the neccessary steps to put the adapter in its manipulative state, assigns the new address to the selected adapter (i.e. spoof en0 for Airport/Wi-Fi) and prints the newly assigned MAC address on screen.
❯ spoof en0
Original MAC: 0c:b6:8a:4d:07:00
Previous MAC: 0c:0b:1d:19:9b:bb
Your new MAC: 1c:cf:63:59:8c:f7
Helpers
# For OS X 10.10 Yosemite and later
sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder; say -v Jill flushed
System Setup
- OS X 10.11 El Capitan
- ZSH with
.zshrc