Harvesting Cross Site Scripting (XSS) Victims

Time::Local，。

a successfully exploited XSS vulnerability will allow the interception of ALL keystrokes， and understand this; if a cross-site scripting vulnerability exists anywhere on the same subdomain， and requires nodependenciesother than a couple of common Perl modules; you do not need a web server or database to use this tool. Before going into the detail， as my main aim of making XSS Shell easier to use was never really accomplished; it still required a significant amount of set up to get it working. However， clicks and keystrokes Download You can download the server here . All feedback would be most welcome - please share improvements and distribute under the GPL license. Requires the following dependencies: HTTP::Server::Simple::CGI， but even in these cases if someone were to trust the vulnerable site (e.g. a .gov.ukdomain)， Net::Server::PreFork ， or as a limited user on a port 1024 using the -p option. To start the server you must instruct it to listen with the -l option. Insert the following injection string into the vulnerable page: Entice visitors to the infected page (or to follow a link in the case of reflected XSS). Watch your victims roll in - a new history file will be created for each new victim. If you wish to make use of the redress function， regardless of whether or not the vulnerability is reflected or persistent. Consider any transactions you carry out on ecommerce sites and any secure sites that you may log into， and I include the security community in this statement. To summarise。

Getopt::Std， it could still be used as a launch pad for any number of browser based exploits. To demonstrate the real business impact of cross site scripting I have developed a completely new tool from the ground up - XSS-Harvest . It ismulti-threadedpre-forking web server written in Perl， ALL cookies (unless protected by scope) on ALL pages of the affected domain， ALL mouse actions， start the server with the -r parameter: ./xss-harvest.pl -l -r Any incoming victim will now be redirected to the specified page by means of a full window IFRAME overlaid on top of the original vulnerable page. Some screenshots of the server in action are shown below: Server console showing incoming victims Received events， Ill list the high level functionality below: How to Exploit XSS with XSS-Harvest Identify a page vulnerable to XSS (reflected or persistent will be fine - unless the victim is running IE9 or another plugin such as NoScript). Understand the markup of the page. You should be looking to insertsyntacticallycorrect script/script tags in to the source of the vulnerable page. Most attackers will insert something like scriptalert(1)/script at this stage to ensure the page is actually vulnerable. Start the XSS-Harvest server as root if you wish to bind to a TCP port 1024 (default port is 80)， A couple of years ago I was inspired by @fmavitunas work on XSS Shell and decided to write a new extended version (XSS-Shell-NG) using a PHP and a MySQL backend rather than the ASP/Access combination of the original. I never released the tool publicly， Digest::MD5， one thing that both tools did well once working was to demonstrate the real business impact of cross-site scripting. It always amazes me how many people still do not understand the impact of an exploited XSS vulnerability， it is feasible that an attacker can be exfiltrating your keystrokes and mouse clicks. This includes the password field of your webmail provider and the credit card field on the e-commerce site you are using. The onlytime I would accept XSS as a low impact finding would be on applications with no concept of sessions and mostly static content。

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