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debugger.php
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<?php
class foo {
public $file = "access.log";
public $data = "logs go here";
function __destruct()
{
file_put_contents($this->file, $this->data);
}
}
$file_name = @$_GET['session_filename'];
print "Readfile " . $file_name ."<br>";
if(!file_exists($file_name))
{
print "No file.<br><br>";
print "In order to actually complete this exersize you need to be able to see the source which we have provided for you here.<br>";
print "<br>";
print "<?php<br>";
print "<code>class foo {<br>";
print "<code> public \$file = \"access.log\";<br>";
print "<code> public \$data = \"logs go here\";<br>";
print "<code> function __destruct()<br>";
print "<code> {<br>";
print "<code> file_put_contents(\$this->file, \$this->data);<br>";
print "<code> }<br>";
print "<code>}<br>";
print "<code>\$file_name = \@\$_GET\[\'session_filename\'\];<br>";
print "<code><br>";
print "<code>print \"Readfile \" . \$file_name .\"<br>\";<br>";
print "<code>if(!file_exists(\$file_name))<br>";
print "<code>{<br>";
print "<code>No file.<br>";
print "<code>In order to actually complete this exersize you need to be able to see
the source which we have provided for you here.<br>";
print "<code><br>";
print "<code>}<br>";
print "<code>else<br>";
print "<code>{<br>";
print "<code> unserialize(file_get_contents(\$file_name));<br>";
print "<code>}<br>";
print "<code><br>";
}
else
{
unserialize(file_get_contents($file_name));
}
print_r(@$_GET);
?>
<!DOCTYPE html>
<html>
<body>
<form action="upload.php" method="post" enctype="multipart/form-data">
Select image to upload:
<input type="file" name="userfile" id="fileToUpload">
<input type="submit" value="Upload Image" name="submit">
</form>
</body>
</html>