Prevent Hack The Box users from reseting machines you are currently working on with a little bit of javascript and your browser console!

htb-cancel-reset.js

/* 
 * Description: Use this script to cancel resets issued to the specified machine
 *  on Hack The Box. Must be run in the browser console, just change
 *  the variable "machine" to the Machine name you would like to 
 *  stop resets to. Copy/Paste into your browser on the Shoutbox
 *  page, and hack all the things!
 */

// Set your machine name here
var machine = 'Valentine';

var shouts = document.getElementById('shouts');
var last = shouts.children[shouts.children.length -1].innerText;
var token = document.getElementById('postShoutIcon').parentElement.attributes[0].nodeValue.split("'")[1];

function CancelHost(id) {
  return sleep(4000).then(() => {
    shoutEmojiArea[0].emojioneArea.setText(`/cancel ${id}`);
    postShout(20, token);
    console.log("[!] Reset Canceled!");
  });
}

function sleep (time) {
  return new Promise((resolve) => setTimeout(resolve, time));
}

function validate() {
  sleep(500).then(() => {
    console.log("[+] Checking for resets on: " + machine);
    var last = shouts.children[shouts.children.length -1].innerText;
    if(last.includes('reset on')) {
      var host = last.split('reset on ')[1].split(' ')[0];
      if (host == machine) {
        var id = last.split('/cancel ')[1].split(' ')[0];
        CancelHost(id);
      }
      
    }
    validate();
  })
}

validate();