**Tools**
# Server-Side Template Injection and Code Injection Detection and Exploitation Tool 
https://github.com/epinna/tplmap
./tplmap.py -u 'http://www.target.com/page?name=John'

# Twig:
https://medium.com/server-side-template-injection/server-side-template-injection-faf88d0c7f34

# Symfony:
Check for www.example.com/_profiler/ it contains errors and server variables