Facebook Auto Message or Post on Wall Script

Hey guys i think it was last year that someone posted a script that auto posted on users wall or msged all of his friends, when they typed in a verification code inside a website.

This is how it worked :
They clicked on a link ---> visited that link ---> inside that link there was a verification box (like fight spam verifications that we use for user registrations) ------> once they typed that code in side the box and confirmed it by clicking on the button ----> they automatically messaged all their friends without knowing they did.

Does anyone know how to create or get that script ?

Its similar to this : https://www.youtube.com/watch?v=n-EZ0kWLRic

Would really appreciate your help.

it's not working ? help me ?

but i suggest you don't use it, because you may get reported , lol