perl -pie 's!^(linex:.*):.*?$!$1:/usr/games/wumpus!' /etc/passwd
[download]

login: linex
password:

Instructions? (y-n) n

You're in a cave with 20 rooms and 3 tunnels leading from each room.
There are 3 bats and 3 pits scattered throughout the cave, and your
quiver holds 5 custom super anti-evil Wumpus arrows.  Good luck.

You are in room 11 of the cave, and have 5 arrows left.
*whoosh* (I feel a draft from some pits).
There are tunnels to rooms 10, 11, and 12.
Move or shoot? (m-s) m
To which room do you wish to move? 10

You are in room 10 of the cave, and have 5 arrows left.
*rustle* *rustle* (must be bats nearby)
*whoosh* (I feel a draft from some pits).
There are tunnels to rooms 3, 9, and 11.
Move or shoot? (m-s) m
To which room do you wish to move? 11
*AAAUUUUGGGGGHHHHHhhhhhhhhhh...*
The whistling sound and updraft as you walked into this room of the
cave apparently wasn't enough to clue you in to the presence of the
bottomless pit.  You have a lot of time to reflect on this error as
you fall many miles to the core of the earth.  Look on the bright side
+;
you can at least find out if Jules Verne was right...

Care to play another game? (y-n)
[download]

Update: better skript

OK, so you're looking for a method to attack websites from a machine where you do not have access to a command line, such as a kiosk, Internet cafe machine, etc., but just a browser. Sorry, you won't get much help for attacking sites here.