I found this one through extensive research i used it makes me 0.8 BTC it may not be 1btc but it does the job thats like $500 i think. This scripts automatically stops working after you make 0.8btc profit. It has that added feature. Try it or not up to you doesnt make a difference to me. Heres link I got straight from owner.
https://satoshibox.com/icctcy4h6tmh8j5icc86spgeBe careful when you pay/download this.
Here is the original creator's post with a free download .
http://bitcoinblackhat.com/showthread.php?tid=3461Even so, I wouldn't download this script as there could be something inside of it that might take your btc or something like that. Never install a script unless you yourself built it and you know what will happen.