How to deobfuscate malicious browser scripts using a script debugger

1.The sample.html file to add the debugger; statement in the beginning of the script

2.load script.html into Firefox using the browser's File 

3.Use Firebug to set a breakpoint on the eval (txt); line of the script.

4.look at contents of the variable "txt"by typingthe console.log(txt) command in Firebug's Console tab.

5.Examine the deobfuscated script in the Console tab

1.The sample.html file to add the debugger; statement in the beginning of the script

2.load script.html into Firefox using the browser's File 

--sample.html-

http://www.w3.org/1999/xhtml" xml:lang="en" lang="en" dir="ltr">



http://www.gnu.org/copyleft/fdl.html" />