It only "unobfuscates" things that are numeric, such as the example shown, which is a hexadecimal number, or decimal numbers such as '218020952'. This might appeaear in a URL as:
http://218020952/dirty-pictures.html
However, a persual of more recent spam shows few using this form any more. More typical examples also include HTML escaping, eg:
http://%77%77%77%2E%66%70%63%6D%61%67%61%7A%69%6E%65%2E%6E%65%74/
for this form, use
perl -MURI::Escape -e ' print uri_unescape("http://%77%77%77%2E%66%70%
+63%6D%61%67%61%7A%69%6E%65%2E%6E%65%74/") . "\n"'
where the preceding was all on one line.
Bob Niederman, http://bob-n.com
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Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
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Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
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Want more info? How to link
or How to display code and escape characters
are good places to start.
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