Packet sniffer for agar.io (Developer's outmost important script)
// ==UserScript==
// @name agar.io Packet Sniffer
// @namespace agar.io
// @version 2.2
// @description Packet sniffer for agar.io (Developer's outmost important script)
// @author Jimboy3100
// @require https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js
// @require http://code.jquery.com/jquery-latest.js
// @resource https://raw.githubusercontent.com/necolas/css3-github-buttons/master/gh-buttons.css
// @resource https://raw.githubusercontent.com/necolas/css3-github-buttons/master/gh-icons.png
// @match *agar.io/*
// @grant none
// @license MIT
// ==/UserScript==
_WebSocket = window.WebSocket;
window.key255 = null;
window.key254 = null;
window.encryptionKey = 0;
window.decryptionKey = 0;
window.packetSent=[];
window.packetCount=0;
$.ajax('https://agar.io/agario.core.js', {
success: core => {
core = core.replace(/function\((\w)\)\{/i, '$& console.log($1);');
core = core.replace(/;if\((\w)<1\.0\){/i, `;if($1<!true){`);
core = core.replace(/function tm\((w)\){/i, '$& console.log($1);');
core = core.replace(/c\[h>>2\]=d;d/, 'c\[h>>2\]=d;if(window.gotKey == false || window.gotKey == undefined || window.gotKey == null){window.encryptionKey = d; window.gotKey = true; console.log("Encryption key (host):"+d)}d');
eval(core);
},
dataType: 'text',
method: 'GET',
cache: false,
crossDomain: true
});
$( document ).ready(function() {
window.MC._onPlayerDeath = window.MC.onPlayerDeath,
window.MC.onPlayerDeath = function() {
window.MC._onPlayerDeath.apply(this, arguments),
$("canvas").hide();
}
window.MC._onPlayerSpawn = window.MC.onPlayerSpawn,
window.MC.onPlayerSpawn = function() {
window.MC._onPlayerSpawn.apply(this, arguments),
$("canvas").show();
}
});
function refer(master, slave, prop) {
Object.defineProperty(master, prop, {
get: function() {
return slave[prop];
},
set: function(val) {
slave[prop] = val;
},
enumerable: true,
configurable: true
});
};
window.WebSocket = function(url, protocols) {
console.log('Listen');
if (protocols === undefined) {
protocols = [];
}
var ws = new _WebSocket(url, protocols);
refer(this, ws, 'binaryType');
refer(this, ws, 'bufferedAmount');
refer(this, ws, 'extensions');
refer(this, ws, 'protocol');
refer(this, ws, 'readyState');
refer(this, ws, 'url');
this.send = function(data) {
let buf = new Uint8Array(data);
if (buf[0] == 255) {
window.key255 = buf;
console.log(`client key:${window.MC.CLIENT_VERSION}`);
} else if (buf[0] == 254) {
console.log(`Protocol version:${buf[1]}`);
} else {
buf = window.decryptPacket(buf); console.log("Buffer sent:",buf);
if (buf.length>3) {
console.log("Buffer count:",window.packetCount);
console.log(String.fromCharCode.apply(String, buf));
window.packetSent[window.packetCount] = buf;
window.packetCount++;
}
}
return ws.send.call(ws, data);
};
this.close = function() {
return ws.close.call(ws);
};
this.onopen = function(event) {};
this.onclose = function(event) {};
this.onerror = function(event) {};
this.onmessage = function(event) {};
ws.onopen = function(event) {
console.log(url);
if (this.onopen) return this.onopen.call(ws, event);
}.bind(this);
ws.onmessage = function(event) {
if (this.onmessage)
return this.onmessage.call(ws, event);
}.bind(this);
ws.onclose = function(event) {
if (this.onclose) return this.onclose.call(ws, event);
}.bind(this);
ws.onerror = function(event) {
if (this.onerror) return this.onerror.call(ws, event);
}.bind(this);
};
window.WebSocket.prototype = _WebSocket;
window.decryptPacket = function(data) {
for (var i = 0; i < data.length; i++) {
data[i] = data[i] ^ window.encryptionKey >>> i % 4 * 8 & 255;
}
window.encryptionKey = window.rotateKey(window.encryptionKey);
return data;
};
window.xorBuf = function(data, key) {
for (var i = 0; i < data.length; i++) {
data[i] = data[i] ^ key >>> i % 4 * 8 & 255;
}
return data;
};
window.rotateKey = function(key) {
key = Math.imul(key, 1540483477) >> 0;
key = Math.imul(key >>> 24 ^ key, 1540483477) >> 0 ^ 114296087;
key = Math.imul(key >>> 13 ^ key, 1540483477) >> 0;
return key >>> 15 ^ key;
};