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