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Here's another trick: type "C:" into the URI window. This changes to
file:///c:/" and displays a directory listing of your hard drive. Some
websites try to fool people by claiming to know what is on your hard
drive. They do this by making a link to file:///c:/ on their website –
click it and you'll see! This kind of website isn't really reading
your entire hard drive, it's just making your browser display this
information to you and you alone.

Now try the same command of C:\ with the URI window of Internet
Explorer (IE). Yes, it shows the contents of your C drive, and it does
something really scary, too. From the URI window on Internet Explorer
you can click through the contents of your hard drive and when you
double click on a program it will automatically run. The reason this
is scary is that it proves that IE can launch all sorts of programs,
and this includes viruses, worms, Trojans, spyware and adware. Firefox
is safer to use than IE because it doesn't carelessly launch programs.
This makes it much safer to visit potentially malicious websites.

You can find other fun things by typing commands into the URI window. Try
About:plugins
About:mozilla
About:

Here are yet more things you can type into the URI window to get
interesting results:

Resource:
resource://gre/res/html.css)
chrome://global/content/xul.css

How did I discover these commands? I didn't find out about them from
other hackers. OK, OK, long ago (1996) a friend told me to type in
"about: Mozilla" into the URI window of a Netscape browser, which is
the ancestor program to Firefox. All the rest was easy to discover
once I got the basic idea. At first I just tried random things, but
then a light bulb went on inside my head and I fired up a hex editor,
muhahaha!

If you are serious about hacking, you need a hex editor! Basically a
hex editor is named after the hexadecimal number system, and when you
use one to view a compiled program you will find out why right away. I
use a hex editor to find things inside compiled programs that look
like words, because they usually mean something important. I found all
the above commands (except for about: Mozilla) that way.

Newbie Note: A compiled program is, basically, a bunch of zeroes and
ones that your computer's central processing unit (CPU) sees as the
command for how to run a program. When you write a program in, for
example, C or Java, you run your commands through a compiler and the
result is a string of zeroes and ones that make sense to the CPU of
your computer. A hex editor interprets those zeroes and ones in a way
that makes the compiled program easier for us humans to understand.

You can get free hex editors in many places, just make sure they don't
hide malicious programs! For Windows, try download.com for safe hex
editors.

Once you get your hex editor running, you can find lots of fun things
by opening the biggest file in the Firefox program directory:
firefox.exe. That file, my friend, means happy hacking!

Looking around at the text items in the editor, I saw several entries
that included the term "resource:" So I tried simply giving the
command "resource:" in the Firefox URI window. I hit enter and this
turned into "resource:///" in the URI window and this gave a directory
listing of everything in the program directory for Firefox.

Next I found several instances of the word "transformiix". This did
nothing in the URI window, so next I went to the Mozilla website, put
in "transformiix" at their search box and got an answer at
http://www.mozilla.org/projects/xslt/ . According to that site, "XSLT
(XSL Transformations) is a language used to transform XML document
into other XML documents…. The implementation of XSLT in Mozilla is
done in the TransforMiiX module. You can use it either as part of the
lizard, or as standalone processor."

 

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