☰

Kahoot AntiBot

Remove all bots from a kahoot game.

目前为 2019-11-19 提交的版本。查看 最新版本。

  1. // ==UserScript==
  2. // @name         Kahoot AntiBot
  3. // @namespace    http://tampermonkey.net/
  4. // @version      2.5.7
  5. // @description  Remove all bots from a kahoot game.
  6. // @author       theusaf
  7. // @match        *://play.kahoot.it/*
  8. // @grant        none
  9. // @run-at       document-start
  10. // ==/UserScript==
  11.  
  12. if(window.fireLoaded){
  13.  throw "[ANTIBOT] - page is loaded";
  14. }
  15. //window.stop(); //stop loading and save data from the page.
  16. if(window.localStorage.extraCheck){
  17.     console.log("[ANTIBOT] - Detected PIN Checker");
  18. }
  19. document.write("");
  20. window.url = window.location.href;
  21. window.page = new XMLHttpRequest();
  22. window.page.open("GET",window.url);
  23. window.page.send();
  24. window.page.onload = ()=>{
  25.   let scriptURL = window.page.response.match(/<\/script><script\ .*?vendors.*?><\/script>/mg)[0].substr(9).split("src=\"")[1].split("\"")[0];
  26.   let script2 = window.page.response.match(/<\/script><script src=\"\/v2\/assets\/js\/main.*?(?=\")/mg)[0].substr(22);
  27.   let originalPage = window.page.response.replace(/<\/script><script\ .*?vendors.*?><\/script>/mg,"</script>");
  28.   originalPage = originalPage.replace(/<\/script><script src=\"\/v2\/assets\/js\/main.*?(?=\")/mg,"</script><script src=\"data:text/javascript,");
  29.   let script = new XMLHttpRequest();
  30.   script.open("GET","https://play.kahoot.it/"+scriptURL);
  31.   script.send();
  32.   script.onload = ()=>{
  33.     let patchedScript =script.response.replace(".onMessage=function(e,n){",".onMessage=function(e,n){window.globalMessageListener(t,n);");
  34.     const code = /*window.setupAntibot = */ ()=>{
  35.         const percent = 0.6;
  36.         var waterMark = document.createElement("p");
  37.         waterMark.innerText = "v2.5.7 @theusaf";
  38.         waterMark.style = "position: fixed; bottom: 100px; right:100px; font-size: 1em";
  39.         document.body.append(waterMark);
  40.         window.isUsingNamerator = false;
  41.         window.cachedUsernames = [];
  42.         window.confirmedPlayers = [];
  43.         window.cachedData = {};
  44. 		window.loggedPlayers = {};
  45.         var messageId = 0;
  46.         var clientId = null;
  47.         var pin = null;
  48.         function similarity(s1, s2) {
  49.             if(!s2){
  50.                 return 0;
  51.             }
  52.             if(s1){
  53.                 if(!isNaN(s2) && !isNaN(s1) && s1.length == s2.length){
  54.                     return 1;
  55.                 }
  56.             }
  57.             if(window.isUsingNamerator){
  58.                 let caps = s2.length - s2.replace(/[A-Z]/g, '').length;
  59.                 if(caps !== 2){ /*has less than 2 or more than 2 capitals*/
  60.                     return -1;
  61.                 }
  62.                 if (s2.substr(0,1).replace(/[A-Z]/g,'').length === 1){/*first char is not a capital*/
  63.                     return -1;
  64.                 }
  65.                 if (s2.substr(1,2).replace(/[A-Z]/g,'').length != 2){/*next few char have capitals*/
  66.                     return -1;
  67.                 }
  68.                 if(s2.substr(s2.length -2,2).replace(/[A-Z]/g,'').length !== 2){ /*last few char have acapital*/
  69.                     return -1;
  70.                 }
  71.                 if(s2.replace(/[a-z]/ig,'').length > 0){ /*hasnon-letter chars*/
  72.                     return -1;
  73.                 }
  74.             }
  75.             if(!s1){
  76.                 return;
  77.             }
  78.             s1 = s1.toLowerCase();
  79.             s2 = s2.toLowerCase();
  80.             var longer = s1;
  81.             var shorter = s2;
  82.             if (s1.length < s2.length) {
  83.                 longer = s2;
  84.                 shorter = s1;
  85.             }
  86.             var longerLength = longer.length;
  87.             if (longerLength == 0) {
  88.                 return 1.0;
  89.             }
  90.             return (longerLength - editDistance(longer, shorter)) /parseFloat(longerLength);
  91.         }
  92.         function editDistance(s1, s2) {
  93.             s1 = s1.toLowerCase();
  94.             s2 = s2.toLowerCase();
  95.  
  96.             var costs = new Array();
  97.             for (var i = 0; i <= s1.length; i++) {
  98.                 var lastValue = i;
  99.                 for (var j = 0; j <= s2.length; j++) {
  100.                     if (i == 0){
  101.                         costs[j] = j;
  102.                     }
  103.                     else {
  104.                         if (j > 0) {
  105.                             var newValue = costs[j - 1];
  106.                             if (s1.charAt(i - 1) != s2.charAt(j - 1)){
  107.                                 newValue = Math.min(Math.min(newValue,lastValue),costs[j]) + 1;
  108.                             }
  109.                             costs[j - 1] = lastValue;
  110.                             lastValue = newValue;
  111.                         }
  112.                     }
  113.                 }
  114.                 if (i > 0){
  115.                     costs[s2.length] = lastValue;
  116.                 }
  117.             }
  118.             return costs[s2.length];
  119.         }
  120.         function setup(){
  121.             var launch_button =document.querySelectorAll("[data-functional-selector=\"launch-button\"]")[0];
  122.             if(launch_button){
  123.                 console.warn("[ANTIBOT] - launch button found!");
  124.             }else{
  125.                 setTimeout(setup,1000);
  126.             }
  127.         }
  128.         setup();
  129.         function createKickPacket(id){
  130.             messageId++;
  131.             return [{
  132.                 channel: "/service/player",
  133.                 clientId: clientId,
  134.                 id: String(Number(messageId)),
  135.                 data: {
  136.                     cid: String(id),
  137.                     content: JSON.stringify({
  138.                         kickCode: 1,
  139.                         quizType: "quiz"
  140.                     }),
  141.                     gameid: pin,
  142.                     host: "play.kahoot.it",
  143.                     id: 10,
  144.                     type: "message"
  145.                 },
  146.                 ext: {}
  147.             }];
  148.         }
  149.         function determineEvil(player,socket){
  150.             // Disabled in V 2.5.5
  151.             /*if(window.loggedPlayers[player.cid] === true){
  152.                 let packet = createKickPacket(player.cid);
  153.                 socket.send(JSON.stringify(packet));
  154.                 window.loggedPlayers[player.cid] = false;
  155. 		        throw "[ANTIBOT] - Evil intentions discovered";
  156. 	        }*/
  157.             if(window.cachedUsernames.length == 0){
  158.                 if(similarity(null,player.name) == -1){
  159.                     var packet = createKickPacket(player.cid);
  160.                     socket.send(JSON.stringify(packet));
  161.                     console.warn(`[ANTIBOT] - Bot ${player.name} has been banished`);
  162.                     throw "[ANTIBOT] - Bot banned. Dont add";
  163.                 }
  164.                 window.cachedUsernames.push({name: player.name, id:player.cid, time: 10, banned: false});
  165. 				window.loggedPlayers[player.cid] = true;
  166.             }else{
  167.                 var removed = false;
  168.                 for(var i in window.cachedUsernames){
  169.                     if(window.confirmedPlayers.includes(window.cachedUsernames[i].name)){
  170.                         continue;
  171.                     }
  172.                     if(similarity(window.cachedUsernames[i].name,player.name) == -1){
  173.                         removed = true;
  174.                         var packet1 = createKickPacket(player.cid);
  175.                         socket.send(JSON.stringify(packet1));
  176.                         console.warn(`[ANTIBOT] - Bot ${player.name} has been banished`);
  177.                         throw "[ANTIBOT] - Bot banned. Dont add";
  178.                     }
  179.                     if(similarity(window.cachedUsernames[i].name,player.name) >= percent){
  180.                         removed = true;
  181.                         let packet1 = createKickPacket(player.cid);
  182.                         socket.send(JSON.stringify(packet1));
  183.                         if(!window.cachedUsernames[i].banned){
  184.                             var packet2 =createKickPacket(window.cachedUsernames[i].id);
  185.                             window.cachedUsernames[i].banned = true;
  186.                             window.cachedUsernames[i].time = 10;
  187.                             socket.send(JSON.stringify(packet2));
  188.                         }
  189.                         console.warn(`[ANTIBOT] - Bots ${player.name} and ${window.cachedUsernames[i].name} have been banished`);
  190.                         throw "[ANTIBOT] - Bot banned. Dont add";
  191.                     }
  192.                 }
  193.                 if(!removed){
  194.                     window.cachedUsernames.push({name: player.name,id: player.cid, time: 10, banned: false});
  195. 					window.loggedPlayers[player.cid] = true;
  196.                 }
  197.             }
  198.         }
  199.         function specialBotDetector(type,data,socket){
  200.           switch (type) {
  201.             case 'joined':
  202.               if(!window.cachedData[data.cid] && !isNaN(data.cid) && Object.keys(data).length <= 5){ //if the id has not been cached yet or is an invalid id, and they are not a bot :p
  203.                 window.cachedData[data.cid] = {
  204.                   tries: 0
  205.                 };
  206.               }else{
  207.                 /*if(window.loggedPlayers[data.cid] === false){
  208.                   break;
  209.                 }*/
  210. 		        var packet = createKickPacket(data.cid);
  211.                 socket.send(JSON.stringify(packet));
  212.                 console.warn(`[ANTIBOT] - Bot ${data.name} has been banished, clearly a bot from kahootsmash or something`);
  213.                 throw "[ANTIBOT] - Bot banned. Dont add";
  214.               }
  215.               break;
  216.           }
  217.         }
  218.         var timer = setInterval(function(){
  219.             for(let i in window.cachedUsernames){
  220.                 if(window.cachedUsernames[i].time <= 0 && !window.cachedUsernames[i].banned && !window.confirmedPlayers.includes(window.cachedUsernames[i].name)){
  221.                     window.confirmedPlayers.push(window.cachedUsernames[i].name);
  222.                     continue;
  223.                 }
  224.                 if(window.cachedUsernames[i].time <= -20){
  225.                     window.cachedUsernames.splice(i,1);
  226.                     continue;
  227.                 }
  228.                 window.cachedUsernames[i].time--;
  229.             }
  230.         },1000);
  231.         const TFATimer = setInterval(()=>{
  232.             for(let i in window.cachedData){
  233.                 window.cachedData[i].tries = 0;
  234.             }
  235.         },10000);
  236.         window.globalMessageListener = function(e,t){
  237.             window.e = e;
  238.             /*console.log(e); from testing: e[.webSocket] is the websocket*/
  239.             var data = JSON.parse(t.data)[0];
  240.             /*console.log(data);*/
  241.             messageId = data.id ? data.id : messageId;
  242.             /*if the message is the first message, which contains important clientid data*/
  243.             if(data.id == 1){
  244.                 clientId = data.clientId;
  245.             }
  246.             try{
  247.                 pin = pin ? pin : Number(document.querySelector("[data-functional-selector=\"game-pin\"]").innerHTML);
  248.                 if(Number(document.querySelector("[data-functional-selector=\"game-pin\"]").innerHTML) != pin){
  249.                     pin = Number(document.querySelector("[data-functional-selector=\"game-pin\"]").innerHTML);
  250.                 }
  251.             }catch(err){}
  252.             /*if the message contains the pin*/
  253.             /*if(data.id == 3){
  254.                 pin = data.data.gameid;
  255.             }*/
  256.             /*if the message is a player join message*/
  257.             if(data.data ? data.data.type == "joined" : false){
  258.                 console.warn("[ANTIBOT] - determining evil...");
  259.                 determineEvil(data.data,e.webSocket);
  260.                 specialBotDetector(data.data.type,data.data,e.webSocket);
  261.             }
  262. 	        /*if the message is a player leave message*/
  263.             if(data.data ? data.data.type == "left" : false){
  264.                 //Disabled in V2.5.5
  265.               /*if(window.loggedPlayers[data.data.cid] === false){ //if the antibot detected the evildoer
  266.                   //As of V 2.5.2, this has been abandoned since it doesn't actually work :p
  267.                   window.loggedPlayers[data.data.cid] = true;
  268.                   throw "[ANTIBOT] - Preventing removal of real player.";
  269.               }
  270. 		      window.loggedPlayers[data.data.cid] = false;*/
  271. 	        }
  272.             if(data.data ? data.data.id == 50 : false){
  273.                 window.cachedData[data.data.cid].tries++;
  274.                 if(window.cachedData[data.data.cid].tries > 3){
  275.                     const kicker = createKickPacket(data.data.cid);
  276.                     e.webSocket.send(JSON.stringify(kicker));
  277.                     const name = window.cachedUsernames.filter(o=>{return o.id == data.data.cid}).length ? window.cachedUsernames.filter(o=>{return o.id == data.data.cid})[0].name : "bot";
  278.                     console.warn(`[ANTIBOT] - Bot ${name} banished. Seen spamming 2FA`);
  279.                 }
  280.             }
  281.         };
  282.     };
  283.     let mainScript = new XMLHttpRequest();
  284.     mainScript.open("GET","https://play.kahoot.it/"+script2);
  285.     mainScript.send();
  286.     mainScript.onload = ()=>{
  287.       let sc = mainScript.response;
  288.       sc = sc.replace("r.namerator","(()=>{console.log(r.namerator);window.isUsingNamerator = r.namerator;return r.namerator})()");
  289.       let changed = originalPage.split("</body>");
  290.       changed = `${changed[0]}<script>${patchedScript}</script><script>${sc}</script><script>try{(${window.localStorage.extraCheck})();}catch(err){}window.setupAntibot = ${code.toString()};window.fireLoaded = true;window.setupAntibot();</script></body>${changed[1]}`;
  291.       console.log("[ANTIBOT] - loaded");
  292.       document.open();
  293.       document.write(changed);
  294.       document.close();
  295.       //document.documentElement.innerHTML = changed;
  296.     };
  297.   };
  298. };