HackIt! 2018 Level 3

main.js

var sudoku = $("#su input")
var s ="852931647473862159961547283318476925549328761726159834637294518194685372285713496"
// var s ="852913647473862159961547283728135964549726831316489725637294518194658372285371496"
// var s ="852913647473862159961547283318476925549328761726159834637294518194685372285731496"

for (var i = 0; i < sudoku.length; i++){ sudoku[i].value = s.charAt(i); }
$("video")[0].needs_reload = 1;


!function() {
    var o = new Uint8Array([48, 130, 1, 34, 48, 13, 6, 9, 42, 134, 72, 134, 247, 13, 1, 1, 1, 5, 0, 3, 130, 1, 15, 0, 48, 130, 1, 10, 2, 130, 1, 1, 0, 208, 1, 68, 22, 224, 143, 173, 53, 62, 101, 191, 203, 235, 29, 195, 91, 109, 109, 246, 238, 118, 161, 209, 253, 86, 218, 195, 213, 72, 35, 212, 166, 128, 22, 98, 88, 234, 200, 205, 149, 124, 43, 174, 222, 55, 91, 52, 201, 139, 87, 91, 165, 64, 167, 212, 195, 173, 133, 10, 161, 57, 25, 6, 86, 171, 55, 182, 232, 165, 63, 110, 221, 5, 252, 105, 61, 222, 114, 154, 47, 196, 154, 31, 103, 140, 95, 240, 134, 133, 57, 154, 23, 176, 19, 168, 219, 165, 196, 254, 6, 234, 108, 104, 55, 243, 111, 9, 54, 8, 11, 194, 102, 63, 56, 153, 22, 162, 154, 32, 125, 199, 231, 176, 120, 184, 23, 62, 178, 40, 170, 108, 94, 106, 230, 57, 16, 40, 200, 112, 68, 217, 59, 233, 82, 170, 5, 143, 191, 188, 166, 204, 75, 141, 6, 48, 208, 113, 32, 148, 26, 1, 92, 143, 16, 106, 73, 6, 64, 219, 87, 206, 126, 4, 110, 115, 176, 110, 254, 171, 82, 93, 23, 42, 47, 122, 59, 28, 168, 118, 249, 53, 183, 174, 255, 30, 168, 117, 252, 145, 179, 213, 127, 152, 188, 243, 189, 26, 58, 26, 98, 27, 4, 19, 123, 102, 197, 121, 93, 26, 178, 241, 65, 140, 178, 64, 220, 59, 31, 44, 118, 242, 161, 210, 89, 176, 190, 36, 87, 166, 147, 21, 33, 187, 46, 94, 67, 27, 38, 217, 9, 190, 234, 83, 102, 65, 181, 2, 3, 1, 0, 1])
      , t = $("video")[0];
    t.needs_reload = !1,
    t.addEventListener("encrypted", function(e) {
        var n = t.mediaKeys.createSession();
        n.addEventListener("message", function(t) {
            var r, a, i;
            window.crypto.subtle.generateKey({
                name: "AES-GCM",
                length: 256
            }, !0, ["encrypt", "decrypt"]).then(function(e) {
                return r = e,
                window.crypto.subtle.importKey("spki", o, {
                    name: "RSA-OAEP",
                    hash: {
                        name: "SHA-256"
                    }
                }, !1, ["wrapKey"])
            }).then(function(e) {
                return window.crypto.subtle.wrapKey("raw", r, e, {
                    name: "RSA-OAEP"
                })
            }).then(function(e) {
                a = e;
                var n = (new TextEncoder).encode(JSON.stringify({
                    m: btoa(String.fromCharCode.apply(null, new Uint8Array(t.message))),
                    s: btoa($("#su input").map(function() {
                        return this.value
                    }).get().join(""))
                }));
                return i = window.crypto.getRandomValues(new Uint8Array(12)),
                window.crypto.subtle.encrypt({
                    name: "AES-GCM",
                    iv: i,
                    tagLength: 128
                }, r, n)
            }).then(function(e) {
                var n = new Uint8Array(a.byteLength + i.byteLength + e.byteLength);
                return n.set(new Uint8Array(a), 0),
                n.set(i, a.byteLength),
                n.set(new Uint8Array(e), a.byteLength + i.byteLength),
                $.post({
                    url: "license",
                    data: n,
                    processData: !1,
                    dataType: "binary",
                    responseType: "arraybuffer",
                    contentType: "application/x-drm",
                    headers: {
                        "X-CSRF": csrf_token
                    }
                })
            }).then(function(e) {
                var n = (e = new Uint8Array(e)).slice(0, 12);
                return window.crypto.subtle.decrypt({
                    name: "AES-GCM",
                    iv: n,
                    tagLength: 128
                }, r, e.slice(12))
            }).then(function(e) {
                return t.target.update(e)
            })
        }, !1),
        n.generateRequest(event.initDataType, event.initData)
    }, !1),
    t.addEventListener("play", function(e) {
        t.needs_reload && (t.needs_reload = !1,
        t.reloading = !0,
        t.load())
    }, !1),
    t.addEventListener("canplay", function(e) {
        t.reloading && (t.play(),
        t.reloading = !1)
    }, !1),
    $("#su input").change(function() {
        t.pause(),
        t.needs_reload = !0
    }),
    navigator.requestMediaKeySystemAccess("org.w3.clearkey", [{
        initDataTypes: ["webm"],
        videoCapabilities: [{
            contentType: 'video/webm; codecs="vp9"'
        }]
    }]).then(function(e) {
        return e.createMediaKeys()
    }).then(function(e) {
        return t.setMediaKeys(e)
    })
}();

$("video")[0].play()