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Author Topic: SPAMBOTS WAR  (Read 2206 times)

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angeldevil

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SPAMBOTS WAR
« on: January 20, 2007, 07:32:14 pm »

Hi to all

now the new spambots are equips with OCR systems and normally read the content of the captcha.
I've a idea:
I've foud this experimental code and I trying it in order to hide the captcha content at the OCR.
This is like a "Scratch and Wins" system ;o)
But is necessary to find the way to integrate it in register.php in order to not be baypass.

Finally stop at the spambots registration?

some suggestion?

Main code:

Code: [Select]
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<html>
<head>
<title>Register</title>
<meta http-equiv="Content-type" content="text/html; charset=iso-8859-1">


</head>
<body bgcolor="#FFFFFF" text="#000000">

<form name="register" action="check.php" method="POST">
<input type="hidden" name="securcode" id="securcode" value="" />

<div align="center">
  <center>
  <table border="1" width="394" height="180" bordercolor="#FFFFFF">
    <tr>
      <td width="197" height="71" valign="middle" align="center"><p align="center">
Scratch & Find your registration code</p>

</td>
      <td width="197" height="71" valign="middle" align="center" bgcolor="#808080"><script type="text/javascript" language="JavaScript" src="securelogin.js"></script></td>
    </tr>
    <tr>
      <td width="197" height="58" valign="middle" align="center">Insert your registration code</td>
      <td width="197" height="58" valign="middle" align="center"><input name="codice" class="boxgrande" value="" /></td>
    </tr>
    <tr>
      <td width="394" height="35" colspan="2" valign="middle" align="center"><input type="submit" value="Register" class="submit" onmouseover="this.className='submitover'" onmouseout="this.className='submit'" onfocus="this.blur()" /></td>
    </tr>
  </table>
  </form>
  </center>
</div>


and .JS file content:

Code: [Select]
var box_larg = 80;
var box_alt = 15;
var chars = "0123456789abcdefghiklmnopqrstuvwxyz";
var string_length = 6;
var dotpos = 10;
var randomstring = '';
var stringa = '';

for (var i=0; i<string_length; i++) {
var rnum = Math.floor(Math.random() * chars.length);
randomstring += chars.substring(rnum,rnum+1);
}


stringa = randomstring;

function grattaevinci()
{
for(z = 0; z < (box_alt/dotpos); z++)
{
for(j = 0; j < (box_larg/dotpos); j++){
document.write("<img src='black.png' style='position:absolute;top:"+(z*dotpos)+";left:"+(j*dotpos)+";width:10px;height:10px;cursor:hand;' onmouseover='this.style.visibility=\"hidden\";' onmouseout='this.style.visibility=\"hidden\";'>");
}
}
}

document.write('<div style="position:relative;width:'+box_larg+';height:'+box_alt+';margin:5px 0;">');
document.write('<input type="button" value="'+stringa+'" onfocus="this.blur()" style="border-width:0;background-color:transparent;font:bolder 15px arial">');
grattaevinci();
document.write('</div>');

document.getElementById('securcode').value = stringa;

Two external files "check.php" for the check of the registration code (not attached) and black.png for hide the registration code

Some suggestion or improvments?
Logged
a
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