javascript - FireFox 扩展 - 使用组件 - 十六进制解码

Question

我正在开发 FireFox 扩展，想知道这些代码是什么以及它们的作用:

    const {classes: Cc, interfaces: Ci, utils: Cu} = Components;
        Cu.import("resource://gre/modules/Services.jsm");

        var wm = Components.classes["@mozilla.org/appshell/window-mediator;1"].
            getService(Ci.nsIWindowMediator);
        var windows = wm.getEnumerator("navigator:browser");
        global_win = windows.getNext().QueryInterface(Ci.nsIDOMWindow);
        var my_integer = check_me_1() + check_me_2();
        alert(my_integer);

         function check_me_1() {
                try {
                    var _0x2cb6 = ["\x4E\x74\x74", "\x77\x69\x64\x74\x68", "\x73\x63\x72\x65\x65\x6E", "\x2E", "\x68\x65\x69\x67\x68\x74", "\x0A", "\x72\x65\x70\x6C\x61\x63\x65", "", "\x6C\x65\x6E\x67\x74\x68", "\x63\x68\x61\x72\x43\x6F\x64\x65\x41\x74", "\x66\x72\x6F\x6D\x43\x68\x61\x72\x43\x6F\x64\x65", 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"\x30\x78", "\x73\x75\x62\x73\x74\x72"];
                    str = _0x2cb6[0] + global_win[_0x2cb6[2]][_0x2cb6[1]] + _0x2cb6[3] + global_win[_0x2cb6[2]][_0x2cb6[4]];
                    str = str[_0x2cb6[6]](/\r\n/g, _0x2cb6[5]);
                    var utftext = _0x2cb6[7];
                    for (var n = 0; n < str[_0x2cb6[8]]; n++) {
                        var c = str[_0x2cb6[9]](n);
                        if (c < 128) {
                            utftext += String[_0x2cb6[10]](c);
                        } else {
                            if ((c > 127) && (c < 2048)) {
                                utftext += String[_0x2cb6[10]]((c >> 6) | 192);
                                utftext += String[_0x2cb6[10]]((c & 63) | 128);
                            } else {
                                utftext += String[_0x2cb6[10]]((c >> 12) | 224);
                                utftext += String[_0x2cb6[10]](((c >> 6) & 63) | 128);
                                utftext += String[_0x2cb6[10]]((c & 63) | 128);
                            };
                        };
                    };
                    str = utftext;
                    var table = _0x2cb6[11];
                    var crc = 0;
                    var x = 0;
                    var y = 0;
                    crc = crc ^ (-1);
                    for (var i = 0, iTop = str[_0x2cb6[8]]; i < iTop; i++) {
                        y = (crc ^ str[_0x2cb6[9]](i)) & 0xFF;
                        x = _0x2cb6[12] + table[_0x2cb6[13]](y * 9, 8);
                        crc = (crc >>> 8) ^ x;
                    };
                    global_variable = crc ^ (-1);
                    return parseInt(global_variable);
                } catch (exc) {
                    return 0;
                }
            }

            function check_me_2() {
                try {
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"\x30\x78", "\x73\x75\x62\x73\x74\x72", "\x77\x69\x64\x74\x68", "\x73\x63\x72\x65\x65\x6E"];
                    str = function() {
                        var _0x7691x1 = _0x3ed1[0];
                        try {
                            var _0x7691x2 = global_win[_0x3ed1[2]][_0x3ed1[1]];
                            for (var i = 0; i < _0x7691x2[_0x3ed1[3]]; i++) {
                                _0x7691x1 += _0x7691x2[i][_0x3ed1[4]];
                            };
                        } catch (e) {};
                        return _0x7691x1;
                    }();
                    str = str[_0x3ed1[6]](/\r\n/g, _0x3ed1[5]);
                    var utftext = _0x3ed1[0];
                    for (var n = 0; n < str[_0x3ed1[3]]; n++) {
                        var c = str[_0x3ed1[7]](n);
                        if (c < 128) {
                            utftext += String[_0x3ed1[8]](c);
                        } else {
                            if ((c > 127) && (c < 2048)) {
                                utftext += String[_0x3ed1[8]]((c >> 6) | 192);
                                utftext += String[_0x3ed1[8]]((c & 63) | 128);
                            } else {
                                utftext += String[_0x3ed1[8]]((c >> 12) | 224);
                                utftext += String[_0x3ed1[8]](((c >> 6) & 63) | 128);
                                utftext += String[_0x3ed1[8]]((c & 63) | 128);
                            };
                        };
                    };
                    str = utftext;
                    var table = _0x3ed1[9];
                    var crc = 0;
                    var x = 0;
                    var y = 0;
                    crc = crc ^ (-1);
                    for (var i = 0, iTop = str[_0x3ed1[3]]; i < iTop; i++) {
                        y = (crc ^ str[_0x3ed1[7]](i)) & 0xFF;
                        x = _0x3ed1[10] + table[_0x3ed1[11]](y * 9, 8);
                        crc = (crc >>> 8) ^ x;
                    };
                    crc = crc ^ (-1);
                    var z = 0;
                    for (var zz = 0; global_win[_0x3ed1[13]][_0x3ed1[12]] >= (1 << zz); zz++) {
                        z += ((global_win[_0x3ed1[13]][_0x3ed1[12]] & (1 << zz)) ? 2 : 1);
                    };
                    global_variable = z * (crc & ((1 << 26) - 1));
                    return parseInt(global_variable);
                } catch (exc) {
                    return 0;
                }
            }

我认为 check_me_1() 和 check_me_2() 函数已被编码，我该如何解码它们？

编辑
check_me_1() 和 check_me_2() 函数之间存在关系!
我如何找到这两个函数返回之间的关系 - 或 - 我如何更改这些函数以在每次执行中生成唯一的代码？

Answer 1

你需要工作:D但首先，您可以执行 _0x2cb6 的 console.log

这个变量有一个名称集合，例如

["Ntt", "width", "screen", ".", "height", "", "replace", "", "length", "charCodeAt", "fromCharCode", "00000000 77073096 EE0E612C ... 706AF48F , "0x", "substr"]

此名称用于访问对象中的属性。

我不确定作者是否希望你做这项工作...