[lug] unescaping url encoded document

Jeffrey Haemer jeffrey.haemer at gmail.com
Fri Nov 6 16:29:40 MST 2009


Ken,

This is well outside a browser:

s='%3C%21%44%4F%43%54%59%50%45%20%48%54%4D%4C%20%50'
printf "${s//%/\\x}\n"


The substitution, "${s//%.\\x}" turns every '%' symbol in $s into the
two-character string "\x".  Having done that, the shell's printf command
will just print the string as ASCII.

[ Sorry to be slow.  My day's been, um, unusually busy. :-) ]


On Fri, Nov 6, 2009 at 1:21 PM, Kenneth D Weinert <kenw at quarter-flash.com>wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> This is sort of amusing. I got a scam email telling me that the IRS was
> going to give me a refund of $773.00 and all I had to do was fill in the
> form and send it off.
>
> I clicked on it just to see where they were really sending it and did a
> "View Source" in my browser.  Here are the first 4 lines (4th line
> truncated):
>
> <Script Language='Javascript'>
> <!-- HTML Encryption provided by IRS -->
> <!--
> document.write(unescape('%3C%21%44%4F%43%54%59%50%45%20%48%54%4D%4C%20%50
>
>
> It displays fine, but I'm just curious what the submit button does and
> wondered if anyone had an easy shortcut to translate the URL Encoding
> into plain text outside of a browser.
>
> An interesting variation, at least one I hadn't seen before.
>
> - --
> Ken
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.9 (GNU/Linux)
> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
>
> iEYEARECAAYFAkr0hUkACgkQH0OpnUzq8fBzQQCfdjGyBlm6mQf8K6iAT4/K9KBl
> fgkAoI892MpL5QZxYRs7vCBDj9G3BzUM
> =Ymw9
> -----END PGP SIGNATURE-----
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Jeffrey Haemer <jeffrey.haemer at gmail.com>
720-837-8908 [cell],  @goyishekop [twitter]
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