Metasploit
Metasploitable 2 VM
Convert image:
cd /tmp
wget https://sourceforge.net/projects/metasploitable/files/Metasploitable2/metasploitable-linux-2.0.0.zip
unzip metasploitable-linux-2.0.0.zip
cd Metasploitable2-Linux/
qemu-img convert -O qcow2 Metasploitable.vmdk metasploitable.qcow2