Convert the ISO
hdiutil convert kali-linux-light-2018.4-amd64.iso -format UDRW -o kali.img
Get the USB disk
diskutil list
Unmout the disk
diskutil unmountDisk /dev/diskX
Install the system (for macOS dd use
1m
)
sudo dd if=kali.img.dmg of=/dev/disk2 bs=1M
Eject the disk
diskutil eject /dev/diskX