XSS Shell
XSS Shell is powerful a XSS backdoor and zombie manager. This concept first presented by “XSS-Proxy – http://xss-proxy.sourceforge.net/”. Normally in XSS attacks attacker has one shot, in XSS Shell you can interactively send requests and get responses from victim. you can backdoor the page.
Installation
XSS Shell uses ASP + MS Access database as backend but you can simply port them into any other server-side solution. You just need to stick with simple communication protocol.
Install Admin Interface
Copy “xssshell” folder into your web server
Copy “db” to a secure place (below root)
Configure “database path” from “xssshell/db.asp”
Modify hard coded password in db.asp [default password is : w00t]
Now you can access admin interface from something like http://[YOURHOST]/xssshell/
Configure XSS Shell for communication;
Open xssshell.asp
2. Set “SERVER” variable to where your XSSShell folder is located. i.e: “http://[YOURHOST]/xssshell/”;
3. Be sure to check “ME”, “CONNECTOR”, “COMMANDS_URL” variables. If you changed filenames, folder names or some kind of different configuration you need modify them.
Now open your admin interface from your browser,
To test it, just modify “sample_victim/default.asp” source code and replace “http://attacker:81/release/xssshell.js” URL with your own XSS Shell URL. Open “sample_victim” folder in some other browser and may be upload in to some other server.
Now you should see a zombie in admin interface. Just write something into “parameters” textarea and click “alert()”. You should see an alert message in victim’s browser.
Security Notes
As a hunter be careful about possible “Backfire” in getSelfHTML(). Someone can hack you back or track you by another XSS or XSS Shell attack.
Checkout “showdata.asp” and implement your own “filter()” function to make it safer for you.
Put “On error resume next” to db.asp, better modify your web server to not show any error.