chal.php

<?php

// $wordlist, acho que e a lista do challange anterior que retornou uma porrada de conteudo  
$cookie_data = 'ClVLIh4ASCsCBE8lAxMacFMZV2hdVVotEhhUJQNVAmhSEV4sFxFeaAw'


function xor_encrypt($in, $key) {
    # $key = '<censored>';
    $text = $in;
    $outText = '';

    // Iterate through each character
    for($i=0;$i<strlen($text);$i++) {
    $outText .= $text[$i] ^ $key[$i % strlen($key)];
    }

    return $outText;
}


foreach($wordlist as $word){
    $default_data = array('showpassword'=>'yes', 'bgcolor'=>$word);
    $key = xor_encrypt($default_data, $word)
    if($key == $cookie_data){
        echo $key;
    }
}


?>