WHAT is THIS ???

alex34w

Hi,
My first post ... longtime reader first time poster.

I have this code:

echo "\x47\x65\x74\x45\x64\x69\x74\x69\x6f\x6e";

when I run the script it spits out:

GetEdition

My question is what type of character encoding is this "\x47\x65\x74\x45\x64\x69\x74\x69\x6f\x6e"; ... whats the name of it.

I have typed evryting I can think of into google and Im stuck.

What I am trying to do is create a form where I can drop this encoded code in and have it throw back what it means just like echo does but for some reason it gives me back the code.

Here is what I have been paying with.

$alex = $_REQUEST['xxx'];

echo "\x47\x65\x74\x45\x64\x69\x74\x69\x6f\x6e";
echo "<br>" ;

echo "\"".$alex."\"" ;

echo "<br>" ;
$com = "echo "."\"$alex\"".";";

echo $alex ;

<body>
<form id="form1" name="form1" method="post" action="">
<table width="95%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td>DECODER "\x03\x05" type strings </td>
</tr>
<tr>
<td><label>
<textarea name="xxx" cols="140" rows="20" id="xxx"></textarea>
</label></td>
</tr>
<tr>
<td><label>
<textarea name="decrypted" cols="140" rows="20" id="decrypted">

<?php

eval("echo "."$alex".";") ;
//echo "$alex";

?>
</textarea>
</label></td>
</tr>
<tr>
<td><label>
<input type="submit" name="Submit" value="Submit" />
asd</label></td>
</tr>
</table>
</form>

Thank You
in Advance

halojoy

echo "\x47\x65\x74\x45\x64\x69\x74\x69\x6f\x6e";
GetEdition

\x
tells php to expect one hexadecimal number to follow.
In the string it evaluates to one character's ASCII code

\x47 is the same as 71 in decimal which is ASCII code for 'G'

So this will also display one 'G'
echo chr(71);

Here you a table showing both Decimal and Hexadecimal notation
of characters: http://www.asciitable.com/

To write such code into source of a page can sometimes be useful.
It can fool such spammer bots that search for email addresses in HTML-pages.
Instead of writing mymail@website.com you can disguise using hexadecimals for the mail address.
There are JAVA-Scripts using this trick to protect real email.

🙂