JavaScript Deobfuscator defeated ?

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Noggie
Posts: 82
Joined: Tue Mar 29, 2011 12:46 pm

JavaScript Deobfuscator defeated ?

Post by Noggie »

Seems to be yet another popunder script.

URL:

Code: Select all

https://www (dot) monova (dot) org/
Specific javascript code:

Code: Select all

var k4C = {
    'Z': (function() {
        var B = {}
          , K = function(j, L) {
            var M = L & ((40.,
            3.6E1) >= 0x18 ? (0x178,
            0xffff) : (0x188,
            74));
            var y = L - M;
            return ((y * j | (0x10E < (3.38E2,
            1.205E3) ? (1.1440E3,
            0) : 1.33E3 < (43.,
            25) ? 118.2E1 : (51.0E1,
            87.))) + (M * j | ((49,
            0x1E5) > 0x4A ? (1.078E3,
            0) : (131.,
            0x14D)))) | (76.5E1 > (101.,
            13.17E2) ? 25 : (0x104,
            73.) > (0x20B,
            0x5F) ? (0x227,
            0x172) : 0x1B <= (0x16D,
            145) ? (0x204,
            0) : (0xD8,
            65.4E1));
        }
          , N = function(j, L, M) {
            if (B[M] !== undefined) {
                return B[M];
            }
            var y = ((118.,
            0x170) <= (0x1A9,
            43.) ? 'V' : 0x1D8 <= (116.,
            5.520E2) ? (11.52E2,
            0xcc9e2d51) : 0 >= (24.3E1,
            14.780E2) ? "V" : (0x211,
            0x1DF))
              , g = ((0x11D,
            0x1F0) > (2.95E2,
            0x209) ? (0x4,
            1024) : (0x1CE,
            15.) > 0x182 ? (0x105,
            1024) : (0x1AE,
            31.0E1) <= 1.3960E3 ? (1.7E2,
            0x1b873593) : (0x37,
            78));
            var C = M;
            var u = L & ~((87,
            1.74E2) <= (133.,
            66) ? 'd' : 0x155 >= (109,
            0x2D) ? (137.,
            0x3) : (0xDC,
            62.) > (70.,
            38.0E1) ? (8.16E2,
            0x1DD) : (23.,
            0x196));
            for (var F = (1.168E3 <= (0x77,
            1.315E3) ? (30,
            0) : (28.,
            0x169)); F < u; F += ((0xA7,
            133.) >= (1.288E3,
            124.30E1) ? 123. : 30.20E1 <= (7.58E2,
            6.23E2) ? (10.68E2,
            4) : (1.0090E3,
            48.))) {
                var Y = (j[("char" + ((98.,
                0x76) >= 52 ? (3.84E2,
                "C") : (10.,
                134.) < (104.,
                23) ? "b" : 0x33 >= (0x1E3,
                98.80E1) ? (124,
                'b') : (143.,
                144.)) + ((4.07E2,
                122.) < (14.620E2,
                9.74E2) ? (141,
                "o") : 3.5E1 > (0x1D2,
                107.) ? 1 : (7.810E2,
                49.) >= (14.20E1,
                49.2E1) ? (93,
                1) : (92,
                0x178)) + (67. >= (0xB4,
                86) ? 'Y' : (43.6E1,
                95.) >= (60.,
                42) ? (0xB8,
                "d") : (4.18E2,
                0x81) > 84.60E1 ? (96.,
                'Y') : (1.880E2,
                60)) + ((58.,
                0xB8) >= (0x64,
                6.60E1) ? (1.433E3,
                "e") : (9.38E2,
                86)) + "A" + ((104.,
                0x18E) >= 32.5E1 ? (40,
                "t") : (92,
                74)))](F) & ((0x5A,
                0x6F) < (13.24E2,
                107.) ? (0x28,
                0) : (14,
                3) <= 0x199 ? (33.2E1,
                0xff) : (0xD5,
                36))) | ((j[(((0x177,
                144.) >= 139. ? (1.016E3,
                "c") : (125.30E1,
                18)) + ((34,
                85.) <= 58. ? 0x2A : 101 >= (6.44E2,
                1.247E3) ? (1.216E3,
                "") : (100.,
                0x7F) < (0x236,
                4.05E2) ? (51.,
                "h") : (86.0E1,
                40.)) + ((16,
                0x72) <= (141.,
                0x185) ? (0x208,
                "a") : (3.33E2,
                0x18A)) + "rC" + (13.19E2 > (134.,
                10.47E2) ? (0x10,
                "o") : (60.6E1,
                69.60E1) <= (0x251,
                63.0E1) ? (0x115,
                1024) : (2.73E2,
                0xBF)) + "de" + (0x1D7 >= (10.8E1,
                37.6E1) ? (0x16D,
                "A") : (0x6B,
                2.52E2)) + "t")](F + ((6.7E2,
                33) > (9.11E2,
                0x16B) ? (0x5F,
                0xB0) : (63.,
                0x6B) < 137. ? (16,
                1) : (5.89E2,
                5.83E2))) & (97.30E1 > (10,
                7.19E2) ? (1.41E3,
                0xff) : (2.1E1,
                0x244) <= 37 ? 0 : (8.06E2,
                129))) << ((94,
                44) < 0x10E ? (130,
                8) : (0x5A,
                48))) | ((j[(((67.,
                0x172) < 123 ? (18.8E1,
                1024) : (98.9E1,
                1.48E2) >= 0x4 ? (0x1AB,
                "c") : 87 <= (0x176,
                7.30E1) ? "F" : (0x173,
                111)) + "harC" + "od" + "eAt")](F + 2) & ((138.,
                0x210) >= 11 ? (129,
                0xff) : (0x4D,
                0x8A) >= 7.03E2 ? 0x172 : (0x1,
                138))) << ((0x174,
                70.) > 9. ? (134,
                16) : (0x1B9,
                4.43E2))) | ((j[(((108,
                0x1BB) > (9,
                1.20E1) ? (1.6E1,
                "c") : (0x3E,
                101.60E1)) + "harC" + "od" + ((0x184,
                67) > 0x22 ? (0x15A,
                "e") : (1.22E2,
                80.)) + "At")](F + (139 < (11.73E2,
                0x83) ? (0x1C9,
                43) : (149,
                30.8E1) <= (15.,
                128.8E1) ? (123.,
                3) : (0x1F0,
                0x1E3))) & ((0x239,
                100) > 49 ? (0x111,
                0xff) : (4.01E2,
                66))) << (51.5E1 < (123.,
                4.03E2) ? 130 : (0xA8,
                0x243) >= 0xD0 ? (12.76E2,
                24) : (0x1C7,
                1.029E3)));
                Y = K(Y, y);
                Y = ((Y & ((0x89,
                127) <= 0xCE ? (0x4A,
                0x1ffff) : 0xE >= (0x1D4,
                0xAB) ? (50,
                111.) : (67.,
                61.))) << ((0x20B,
                115) < 147.8E1 ? (78,
                15) : 0x23C <= (0x125,
                1.99E2) ? (16,
                67.0E1) : (89,
                5.97E2))) | (Y >>> ((129,
                65) > 61 ? (7.80E1,
                17) : (59,
                0x189)));
                Y = K(Y, g);
                C ^= Y;
                C = ((C & ((28.5E1,
                0x84) > 2.40E1 ? (0x161,
                0x7ffff) : (8.0E1,
                22.40E1))) << 13) | (C >>> ((36.2E1,
                28.) > 0x2 ? (86.0E1,
                19) : (0x1FA,
                100)));
                C = (C * ((26.8E1,
                107) < 12. ? 'E' : (1.84E2,
                4.810E2) >= (0x102,
                135.) ? (92.9E1,
                5) : (71,
                4.310E2)) + ((0xCA,
                0x138) > 108. ? (0x224,
                0xe6546b64) : (3.,
                12.8E1))) | 0;
            }
            Y = (55.30E1 >= (0x115,
            13.4E2) ? 0x16A : (80.,
            79.60E1) >= 12.70E1 ? (0x186,
            0) : (0x249,
            0x233));
            switch (L % (141.9E1 > (1.475E3,
            36) ? (1.137E3,
            4) : (0x37,
            137))) {
            case ((97.5E1,
            1.068E3) > 0x247 ? (0x1D5,
            3) : (59.0E1,
            6.770E2)):
                Y = (j[("charC" + (80.10E1 > (3.23E2,
                0x1F5) ? (0x32,
                "o") : (116,
                11.) >= (9.70E1,
                0xE9) ? 13. : (12.530E2,
                8.52E2) < 0xAC ? 0x16B : (58.,
                0x220)) + "de" + "A" + (99.0E1 < (2.95E2,
                59.6E1) ? 1.6E1 : (0x8F,
                100.5E1) <= 1.243E3 ? (147.,
                "t") : (8.64E2,
                0x12) > (12.01E2,
                0x257) ? 1 : (2,
                50)))](u + ((100,
                7) < 64.7E1 ? (7.63E2,
                2) : (0E0,
                4.33E2))) & (0x237 >= (49.30E1,
                32.) ? (14.,
                0xff) : 8 > (0x37,
                14.60E1) ? (113.60E1,
                0) : (0x16F,
                0x89))) << (0xC3 >= (0x1C6,
                81.5E1) ? 1024 : 0x1EC < (0x137,
                10.540E2) ? (138.1E1,
                16) : 11.85E2 <= (112.9E1,
                0xBF) ? (99,
                148.5E1) : (78,
                0x1B5));
            case 2:
                Y |= (j[((9.59E2 >= (52.30E1,
                0x1B0) ? (109.,
                "c") : (5.560E2,
                102.)) + (65. < (1.099E3,
                1.02E2) ? (0x47,
                "h") : (135,
                145.)) + "ar" + "Co" + ((78,
                1.0130E3) >= (0x64,
                2.59E2) ? (1.58E2,
                "d") : (0x6B,
                0x91)) + "eAt")](u + ((114.,
                1.07E2) < 0x5D ? (38,
                0xEC) : (54.1E1,
                122.) >= 130.5E1 ? 'O' : (0x1AA,
                136) > 98 ? (66,
                1) : (14.,
                1.216E3))) & ((10.,
                107) >= 11. ? (0xCD,
                0xff) : (46,
                0xE7))) << ((10.200E2,
                72.) >= (0x79,
                0x21C) ? 'E' : 0x3E < (7.45E2,
                8.72E2) ? (0x1FA,
                8) : (1.377E3,
                8.99E2));
            case 1:
                Y |= (j[("c" + "ha" + ((26.,
                138.) <= (63.,
                32.80E1) ? (0x153,
                "r") : (114.,
                0x1C1)) + "C" + "o" + ((59,
                1.213E3) >= (91.30E1,
                57) ? (0x2C,
                "d") : (123,
                115) > (87.,
                128) ? (0x1A9,
                'F') : (7.60E1,
                5.59E2) > (0x23E,
                10.28E2) ? (108,
                0x1F4) : (0x24E,
                105.9E1)) + (8.05E2 < (0xEF,
                5.10E1) ? 1.423E3 : 1.1440E3 <= (116,
                14.74E2) ? (10.9E1,
                "e") : (0x7,
                67.)) + "A" + "t")](u) & (67. > (5.69E2,
                4) ? (36,
                0xff) : (7.03E2,
                66.) >= (45.,
                113.) ? (0x61,
                0xCA) : (19.,
                149.)));
                Y = K(Y, y);
                Y = ((Y & ((1.484E3,
                90.0E1) > (40.,
                0x252) ? (118,
                0x1ffff) : (0xE7,
                57.1E1))) << ((0x157,
                145.) >= (80,
                0x1A5) ? (7.78E2,
                84.0E1) : (17.,
                7.15E2) >= (11,
                16.8E1) ? (111,
                15) : (0x1E4,
                91.5E1) <= (9.4E2,
                3.820E2) ? 34 : (143.,
                68))) | (Y >>> 17);
                Y = K(Y, g);
                C ^= Y;
            }
            C ^= L;
            C ^= C >>> (86. >= (0xF1,
            0) ? (72.0E1,
            16) : (0x52,
            5.30E1));
            C = K(C, (147.4E1 >= (0xDE,
            0x1BE) ? (86.,
            0x85ebca6b) : 5.0E1 >= (14.030E2,
            0xF5) ? (144.,
            'X') : (0x12E,
            5.3E2) < 26.70E1 ? 0xE0 : (40.,
            0x25)));
            C ^= C >>> ((22.0E1,
            18.) >= (86.,
            0x111) ? 'q' : 0xB8 <= (138.20E1,
            13.040E2) ? (0x227,
            13) : 3.94E2 < (27,
            0xC7) ? "q" : (14.60E1,
            49.));
            C = K(C, 0xc2b2ae35);
            C ^= C >>> ((107.,
            0xDB) > (9.3E1,
            71.) ? (96,
            16) : (0xB8,
            41.));
            B[M] = C;
            return C;
        }
        ;
        return {
            H: K,
            r: N
        };
    }
    )(),
    'u8': "o",
    'c1': "od",
    'd1': 0,
    'o1': "e",
    'u1': "C",
    'l1': "d",
    'C8': "c",
    'n1': 2,
    'o': "h",
    'y1': "t",
    'B1': "a",
    'V1': 1,
    'S1': "r"
};
ixesb = function() {
    var f = (0xF7 <= (0x104,
    10.60E1) ? 40.6E1 : (116.,
    0x210) >= (108,
    0x1C2) ? (75,
    "g") : (0x23A,
    100.) > (48.2E1,
    108.) ? 57. : (5.60E1,
    5.72E2))
      , w = "rin"
      , l = (126 <= (6.38E2,
    1.33E2) ? (1.151E3,
    "S") : 121. > (95,
    140) ? 1024 : (64,
    140.) < 26. ? (34,
    0x122) : (54.40E1,
    0x24F))
      , W = "to"
      , E = "eO"
      , s = (135 < (100,
    1.082E3) ? (121,
    "u") : (0xCD,
    9.01E2) <= 12. ? (0xBF,
    1) : (58.,
    135.))
      , T = (0x132 <= (0x4B,
    0x181) ? (61,
    "l") : (77.,
    0x8))
      , q = ((0x124,
    0xE5) < 8.38E2 ? (9.21E2,
    "v") : (97.,
    0xCE))
      , i = (1.53E2 < (0x1E,
    5.46E2) ? (6.88E2,
    5203994) : (6.26E2,
    0x13B))
      , k = (0x73 <= (4.310E2,
    58.5E1) ? (14.14E2,
    4925010) : (0x38,
    0x12C) <= 65 ? (45.,
    "") : (0x1D4,
    0x2))
      , x = (4.3E1 < (0x5F,
    0x165) ? (135.20E1,
    191170054) : (0x72,
    13.5E1))
      , e = ((112.30E1,
    1.315E3) > 7E0 ? (126.10E1,
    519691726) : (85.7E1,
    0x221) > (0x1A9,
    0x230) ? (9.68E2,
    0x4D) : (0x20B,
    9.20E1))
      , V = ((1.428E3,
    0x61) > (0x1C,
    76.3E1) ? (0x66,
    0x189) : (37.,
    0xC8) <= (41.,
    11.25E2) ? (0x23A,
    "f") : (0x1B2,
    65.5E1))
      , U = (0x232 < (0x1F1,
    7.62E2) ? (76.10E1,
    "n") : (0x218,
    0x1F2))
      , Q = "b";
    function P(F) {
        var Y = "om"
          , B = "oo"
          , K = "fl"
          , N = "ne"
          , h = "po"
          , J = (131.5E1 < (122,
        1.272E3) ? (86,
        0x156) : (0x34,
        75.) >= (0x1FB,
        51.) ? (68.0E1,
        "m") : (71,
        85.2E1))
          , G = "en"
          , p = "mpon"
          , n = (0x22 >= (0x1DE,
        3.14E2) ? 'o' : (2.90E1,
        76.) <= (46,
        0x245) ? (4.2E2,
        "I") : 111. > (109.,
        45.0E1) ? (61.40E1,
        'o') : (84.,
        0x236))
          , R = "UR"
          , z = "nc";
        F = window[(k4C.o1 + z + k4C.c1 + k4C.o1 + R + n + k4C.u1 + k4C.u8 + p + G + k4C.y1)](F);
        return window[(Q + k4C.y1 + k4C.u8 + k4C.B1)](window[(k4C.o1 + U + k4C.C8 + k4C.u8 + k4C.l1 + k4C.o1 + R + n + k4C.u1 + k4C.u8 + J + h + N + U + k4C.y1)](function(j) {
            var L = "ode"
              , M = "arC"
              , y = "romC";
            for (var g = "", C = 0; C < j.length; C++)
                g += String[(V + y + k4C.o + M + L)](j[C]);
            return g;
        }
        (function(j) {
            var L = [];
            L[0] = j[0];
            for (var M = 1; M < j.length; M++)
                L[M] = j[M] ^ j[0];
            return L;
        }
        (function(j, L) {
            var M = "odeA"
              , y = "ch"
              , g = []
              , C = 0;
            0 < L && (g[0] = L,
            C = 1);
            for (var u = 0; u < j.length; u++)
                g[u + C] = j[(y + k4C.B1 + k4C.S1 + k4C.u1 + M + k4C.y1)](u);
            return g;
        }
        (F, Math[(K + B + k4C.S1)](1024 * Math[(k4C.S1 + k4C.B1 + U + k4C.l1 + Y)]()))))));
    }
    var D = e
      , c = -x
      , t = k4C.n1;
    for (var I = k4C.V1; k4C.Z.r(I.toString(), I.toString().length, k) !== D; I++) {
        k4C.d1 < d && (a[k4C.d1] = d,
        P = k4C.V1);
        t += k4C.n1;
    }
    if (k4C.Z.r(t.toString(), t.toString().length, i) !== c) {
        k4C.d1 < d && (a[k4C.d1] = d,
        P = k4C.V1);
        k4C.d1 < d && (a[k4C.d1] = d,
        P = k4C.V1);
        return a;
    }
    P[(q + k4C.B1 + T + s + E + V)] = P[(W + l + k4C.y1 + w + f)] = function() {
        var j = "] }"
          , L = "at"
          , M = "() { ["
          , y = "es"
          , g = (9.60E1 < (85.0E1,
        0x1B9) ? (98.,
        "x") : (0x20F,
        0x125))
          , C = ((6.11E2,
        0xDA) >= 1.069E3 ? "" : 0xCB <= (82.,
        2.97E2) ? (123,
        " ") : (23.,
        105.))
          , u = ((0x231,
        8.120E2) > 12 ? (1.171E3,
        "i") : (131,
        90.))
          , F = "fun";
        return ( F + k4C.C8 + k4C.y1 + u + k4C.u8 + U + C + u + g + y + Q + M + U + L + u + q + k4C.o1 + C + k4C.C8 + k4C.c1 + k4C.o1 + j) ;
    }
    ;
    return P;
}
();
Wladimir Palant
ABP Developer
Posts: 8395
Joined: Fri Jun 09, 2006 6:59 pm
Location: Cologne, Germany
Contact:

Re: JavaScript Deobfuscator defeated ?

Post by Wladimir Palant »

JavaScript Deobfuscator uses beautification code from https://github.com/beautify-web/js-beautify - it seems that this is how it presents this code. Not sure what is intended here and what is a bug, but this presentation is suboptimal - feel free to file a bug here.

JavaScript Deobfuscator cannot give variables a more meaningful name of course, that's the biggest issue here.
Wladimir Palant
ABP Developer
Posts: 8395
Joined: Fri Jun 09, 2006 6:59 pm
Location: Cologne, Germany
Contact:

Re: JavaScript Deobfuscator defeated ?

Post by Wladimir Palant »

Actually, it works much better with "remove all extra newlines" - and JS Deobfuscator sets this option as well. It should produce better output than what you show here. Which JS Deobfuscator version are you using?
Noggie
Posts: 82
Joined: Tue Mar 29, 2011 12:46 pm

Re: JavaScript Deobfuscator defeated ?

Post by Noggie »

The problem is it didn't deobfuscate the code. If your extension really only is a beautificator / pretty printer tool then the extension name is misleading. If you can read the code as is than I will bow before your greatness and stay silent.
feel free to file a bug here.
By here I assume you mean there as in https://github.com/beautify-web/js-beautify ?
Otherwise isn't that what I just did by this thread?
JavaScript Deobfuscator cannot give variables a more meaningful name of course, that's the biggest issue here.
The biggest issue is the code is unreadable in its obfuscated form as posted above. I still manage to defeat it by other means hence disabling its purpose for existing but I still would like to be able to read the code.

I'm using "JavaScript Deobfuscator 2.0.1"

I do not know where to find this option "remove all extra newlines". Looked in "Toolbox options" and JavaScript Deobfuscator do not have an option page.
Wladimir Palant
ABP Developer
Posts: 8395
Joined: Fri Jun 09, 2006 6:59 pm
Location: Cologne, Germany
Contact:

Re: JavaScript Deobfuscator defeated ?

Post by Wladimir Palant »

The main purpose of JavaScript Deobfuscator is to show code that is being generated dynamically - and show what code is running right now so that you don't need to sift through mountains of code. As of version 2.0 is also does code beautification.
The biggest issue is the code is unreadable in its obfuscated form as posted above.
For me, the code was beautified. What I see in JavaScript Deobfuscator 2.0.1 is the following:

Code: Select all

var k4C = {
  'Z': (function() {
    var B = {},
      K = function(j, L) {
        var M = L & ((40., 3.6E1) >= 0x18 ? (0x178, 0xffff) : (0x188, 74));
        var y = L - M;
        return ((y * j | (0x10E < (3.38E2, 1.205E3) ? (1.1440E3, 0) : 1.33E3 < (43., 25) ? 118.2E1 : (51.0E1, 87.))) + (M * j | ((49, 0x1E5) > 0x4A ? (1.078E3, 0) : (131., 0x14D)))) | (76.5E1 > (101., 13.17E2) ? 25 : (0x104, 73.) > (0x20B, 0x5F) ? (0x227, 0x172) : 0x1B <= (0x16D, 145) ? (0x204, 0) : (0xD8, 65.4E1));
      },
      N = function(j, L, M) {
        if (B[M] !== undefined) {
          return B[M];
        }
        var y = ((118., 0x170) <= (0x1A9, 43.) ? 'V' : 0x1D8 <= (116., 5.520E2) ? (11.52E2, 0xcc9e2d51) : 0 >= (24.3E1, 14.780E2) ? "V" : (0x211, 0x1DF)),
          g = ((0x11D, 0x1F0) > (2.95E2, 0x209) ? (0x4, 1024) : (0x1CE, 15.) > 0x182 ? (0x105, 1024) : (0x1AE, 31.0E1) <= 1.3960E3 ? (1.7E2, 0x1b873593) : (0x37, 78));
        var C = M;
        var u = L & ~((87, 1.74E2) <= (133., 66) ? 'd' : 0x155 >= (109, 0x2D) ? (137., 0x3) : (0xDC, 62.) > (70., 38.0E1) ? (8.16E2, 0x1DD) : (23., 0x196));
        for (var F = (1.168E3 <= (0x77, 1.315E3) ? (30, 0) : (28., 0x169)); F < u; F += ((0xA7, 133.) >= (1.288E3, 124.30E1) ? 123. : 30.20E1 <= (7.58E2, 6.23E2) ? (10.68E2, 4) : (1.0090E3, 48.))) {
          var Y = (j[("char" + ((98., 0x76) >= 52 ? (3.84E2, "C") : (10., 134.) < (104., 23) ? "b" : 0x33 >= (0x1E3, 98.80E1) ? (124, 'b') : (143., 144.)) + ((4.07E2, 122.) < (14.620E2, 9.74E2) ? (141, "o") : 3.5E1 > (0x1D2, 107.) ? 1 : (7.810E2, 49.) >= (14.20E1, 49.2E1) ? (93, 1) : (92, 0x178)) + (67. >= (0xB4, 86) ? 'Y' : (43.6E1, 95.) >= (60., 42) ? (0xB8, "d") : (4.18E2, 0x81) > 84.60E1 ? (96., 'Y') : (1.880E2, 60)) + ((58., 0xB8) >= (0x64, 6.60E1) ? (1.433E3, "e") : (9.38E2, 86)) + "A" + ((104., 0x18E) >= 32.5E1 ? (40, "t") : (92, 74)))](F) & ((0x5A, 0x6F) < (13.24E2, 107.) ? (0x28, 0) : (14, 3) <= 0x199 ? (33.2E1, 0xff) : (0xD5, 36))) | ((j[(((0x177, 144.) >= 139. ? (1.016E3, "c") : (125.30E1, 18)) + ((34, 85.) <= 58. ? 0x2A : 101 >= (6.44E2, 1.247E3) ? (1.216E3, "") : (100., 0x7F) < (0x236, 4.05E2) ? (51., "h") : (86.0E1, 40.)) + ((16, 0x72) <= (141., 0x185) ? (0x208, "a") : (3.33E2, 0x18A)) + "rC" + (13.19E2 > (134., 10.47E2) ? (0x10, "o") : (60.6E1, 69.60E1) <= (0x251, 63.0E1) ? (0x115, 1024) : (2.73E2, 0xBF)) + "de" + (0x1D7 >= (10.8E1, 37.6E1) ? (0x16D, "A") : (0x6B, 2.52E2)) + "t")](F + ((6.7E2, 33) > (9.11E2, 0x16B) ? (0x5F, 0xB0) : (63., 0x6B) < 137. ? (16, 1) : (5.89E2, 5.83E2))) & (97.30E1 > (10, 7.19E2) ? (1.41E3, 0xff) : (2.1E1, 0x244) <= 37 ? 0 : (8.06E2, 129))) << ((94, 44) < 0x10E ? (130, 8) : (0x5A, 48))) | ((j[(((67., 0x172) < 123 ? (18.8E1, 1024) : (98.9E1, 1.48E2) >= 0x4 ? (0x1AB, "c") : 87 <= (0x176, 7.30E1) ? "F" : (0x173, 111)) + "harC" + "od" + "eAt")](F + 2) & ((138., 0x210) >= 11 ? (129, 0xff) : (0x4D, 0x8A) >= 7.03E2 ? 0x172 : (0x1, 138))) << ((0x174, 70.) > 9. ? (134, 16) : (0x1B9, 4.43E2))) | ((j[(((108, 0x1BB) > (9, 1.20E1) ? (1.6E1, "c") : (0x3E, 101.60E1)) + "harC" + "od" + ((0x184, 67) > 0x22 ? (0x15A, "e") : (1.22E2, 80.)) + "At")](F + (139 < (11.73E2, 0x83) ? (0x1C9, 43) : (149, 30.8E1) <= (15., 128.8E1) ? (123., 3) : (0x1F0, 0x1E3))) & ((0x239, 100) > 49 ? (0x111, 0xff) : (4.01E2, 66))) << (51.5E1 < (123., 4.03E2) ? 130 : (0xA8, 0x243) >= 0xD0 ? (12.76E2, 24) : (0x1C7, 1.029E3)));
          Y = K(Y, y);
          Y = ((Y & ((0x89, 127) <= 0xCE ? (0x4A, 0x1ffff) : 0xE >= (0x1D4, 0xAB) ? (50, 111.) : (67., 61.))) << ((0x20B, 115) < 147.8E1 ? (78, 15) : 0x23C <= (0x125, 1.99E2) ? (16, 67.0E1) : (89, 5.97E2))) | (Y >>> ((129, 65) > 61 ? (7.80E1, 17) : (59, 0x189)));
          Y = K(Y, g);
          C ^= Y;
          C = ((C & ((28.5E1, 0x84) > 2.40E1 ? (0x161, 0x7ffff) : (8.0E1, 22.40E1))) << 13) | (C >>> ((36.2E1, 28.) > 0x2 ? (86.0E1, 19) : (0x1FA, 100)));
          C = (C * ((26.8E1, 107) < 12. ? 'E' : (1.84E2, 4.810E2) >= (0x102, 135.) ? (92.9E1, 5) : (71, 4.310E2)) + ((0xCA, 0x138) > 108. ? (0x224, 0xe6546b64) : (3., 12.8E1))) | 0;
        }
        Y = (55.30E1 >= (0x115, 13.4E2) ? 0x16A : (80., 79.60E1) >= 12.70E1 ? (0x186, 0) : (0x249, 0x233));
        switch (L % (141.9E1 > (1.475E3, 36) ? (1.137E3, 4) : (0x37, 137))) {
          case ((97.5E1, 1.068E3) > 0x247 ? (0x1D5, 3) : (59.0E1, 6.770E2)):
            Y = (j[("charC" + (80.10E1 > (3.23E2, 0x1F5) ? (0x32, "o") : (116, 11.) >= (9.70E1, 0xE9) ? 13. : (12.530E2, 8.52E2) < 0xAC ? 0x16B : (58., 0x220)) + "de" + "A" + (99.0E1 < (2.95E2, 59.6E1) ? 1.6E1 : (0x8F, 100.5E1) <= 1.243E3 ? (147., "t") : (8.64E2, 0x12) > (12.01E2, 0x257) ? 1 : (2, 50)))](u + ((100, 7) < 64.7E1 ? (7.63E2, 2) : (0E0, 4.33E2))) & (0x237 >= (49.30E1, 32.) ? (14., 0xff) : 8 > (0x37, 14.60E1) ? (113.60E1, 0) : (0x16F, 0x89))) << (0xC3 >= (0x1C6, 81.5E1) ? 1024 : 0x1EC < (0x137, 10.540E2) ? (138.1E1, 16) : 11.85E2 <= (112.9E1, 0xBF) ? (99, 148.5E1) : (78, 0x1B5));
          case 2:
            Y |= (j[((9.59E2 >= (52.30E1, 0x1B0) ? (109., "c") : (5.560E2, 102.)) + (65. < (1.099E3, 1.02E2) ? (0x47, "h") : (135, 145.)) + "ar" + "Co" + ((78, 1.0130E3) >= (0x64, 2.59E2) ? (1.58E2, "d") : (0x6B, 0x91)) + "eAt")](u + ((114., 1.07E2) < 0x5D ? (38, 0xEC) : (54.1E1, 122.) >= 130.5E1 ? 'O' : (0x1AA, 136) > 98 ? (66, 1) : (14., 1.216E3))) & ((10., 107) >= 11. ? (0xCD, 0xff) : (46, 0xE7))) << ((10.200E2, 72.) >= (0x79, 0x21C) ? 'E' : 0x3E < (7.45E2, 8.72E2) ? (0x1FA, 8) : (1.377E3, 8.99E2));
          case 1:
            Y |= (j[("c" + "ha" + ((26., 138.) <= (63., 32.80E1) ? (0x153, "r") : (114., 0x1C1)) + "C" + "o" + ((59, 1.213E3) >= (91.30E1, 57) ? (0x2C, "d") : (123, 115) > (87., 128) ? (0x1A9, 'F') : (7.60E1, 5.59E2) > (0x23E, 10.28E2) ? (108, 0x1F4) : (0x24E, 105.9E1)) + (8.05E2 < (0xEF, 5.10E1) ? 1.423E3 : 1.1440E3 <= (116, 14.74E2) ? (10.9E1, "e") : (0x7, 67.)) + "A" + "t")](u) & (67. > (5.69E2, 4) ? (36, 0xff) : (7.03E2, 66.) >= (45., 113.) ? (0x61, 0xCA) : (19., 149.)));
            Y = K(Y, y);
            Y = ((Y & ((1.484E3, 90.0E1) > (40., 0x252) ? (118, 0x1ffff) : (0xE7, 57.1E1))) << ((0x157, 145.) >= (80, 0x1A5) ? (7.78E2, 84.0E1) : (17., 7.15E2) >= (11, 16.8E1) ? (111, 15) : (0x1E4, 91.5E1) <= (9.4E2, 3.820E2) ? 34 : (143., 68))) | (Y >>> 17);
            Y = K(Y, g);
            C ^= Y;
        }
        C ^= L;
        C ^= C >>> (86. >= (0xF1, 0) ? (72.0E1, 16) : (0x52, 5.30E1));
        C = K(C, (147.4E1 >= (0xDE, 0x1BE) ? (86., 0x85ebca6b) : 5.0E1 >= (14.030E2, 0xF5) ? (144., 'X') : (0x12E, 5.3E2) < 26.70E1 ? 0xE0 : (40., 0x25)));
        C ^= C >>> ((22.0E1, 18.) >= (86., 0x111) ? 'q' : 0xB8 <= (138.20E1, 13.040E2) ? (0x227, 13) : 3.94E2 < (27, 0xC7) ? "q" : (14.60E1, 49.));
        C = K(C, 0xc2b2ae35);
        C ^= C >>> ((107., 0xDB) > (9.3E1, 71.) ? (96, 16) : (0xB8, 41.));
        B[M] = C;
        return C;
      };
    return {
      H: K,
      r: N
    };
  })(),
  'u8': "o",
  'c1': "od",
  'd1': 0,
  'o1': "e",
  'u1': "C",
  'l1': "d",
  'C8': "c",
  'n1': 2,
  'o': "h",
  'y1': "t",
  'B1': "a",
  'V1': 1,
  'S1': "r"
};
ixesb = function() {
  var f = (0xF7 <= (0x104, 10.60E1) ? 40.6E1 : (116., 0x210) >= (108, 0x1C2) ? (75, "g") : (0x23A, 100.) > (48.2E1, 108.) ? 57. : (5.60E1, 5.72E2)),
    w = "rin",
    l = (126 <= (6.38E2, 1.33E2) ? (1.151E3, "S") : 121. > (95, 140) ? 1024 : (64, 140.) < 26. ? (34, 0x122) : (54.40E1, 0x24F)),
    W = "to",
    E = "eO",
    s = (135 < (100, 1.082E3) ? (121, "u") : (0xCD, 9.01E2) <= 12. ? (0xBF, 1) : (58., 135.)),
    T = (0x132 <= (0x4B, 0x181) ? (61, "l") : (77., 0x8)),
    q = ((0x124, 0xE5) < 8.38E2 ? (9.21E2, "v") : (97., 0xCE)),
    i = (1.53E2 < (0x1E, 5.46E2) ? (6.88E2, 5203994) : (6.26E2, 0x13B)),
    k = (0x73 <= (4.310E2, 58.5E1) ? (14.14E2, 4925010) : (0x38, 0x12C) <= 65 ? (45., "") : (0x1D4, 0x2)),
    x = (4.3E1 < (0x5F, 0x165) ? (135.20E1, 191170054) : (0x72, 13.5E1)),
    e = ((112.30E1, 1.315E3) > 7E0 ? (126.10E1, 519691726) : (85.7E1, 0x221) > (0x1A9, 0x230) ? (9.68E2, 0x4D) : (0x20B, 9.20E1)),
    V = ((1.428E3, 0x61) > (0x1C, 76.3E1) ? (0x66, 0x189) : (37., 0xC8) <= (41., 11.25E2) ? (0x23A, "f") : (0x1B2, 65.5E1)),
    U = (0x232 < (0x1F1, 7.62E2) ? (76.10E1, "n") : (0x218, 0x1F2)),
    Q = "b";

  function P(F) {
    var Y = "om",
      B = "oo",
      K = "fl",
      N = "ne",
      h = "po",
      J = (131.5E1 < (122, 1.272E3) ? (86, 0x156) : (0x34, 75.) >= (0x1FB, 51.) ? (68.0E1, "m") : (71, 85.2E1)),
      G = "en",
      p = "mpon",
      n = (0x22 >= (0x1DE, 3.14E2) ? 'o' : (2.90E1, 76.) <= (46, 0x245) ? (4.2E2, "I") : 111. > (109., 45.0E1) ? (61.40E1, 'o') : (84., 0x236)),
      R = "UR",
      z = "nc";
    F = window[(k4C.o1 + z + k4C.c1 + k4C.o1 + R + n + k4C.u1 + k4C.u8 + p + G + k4C.y1)](F);
    return window[(Q + k4C.y1 + k4C.u8 + k4C.B1)](window[(k4C.o1 + U + k4C.C8 + k4C.u8 + k4C.l1 + k4C.o1 + R + n + k4C.u1 + k4C.u8 + J + h + N + U + k4C.y1)](function(j) {
      var L = "ode",
        M = "arC",
        y = "romC";
      for (var g = "", C = 0; C < j.length; C++) g += String[(V + y + k4C.o + M + L)](j[C]);
      return g;
    }(function(j) {
      var L = [];
      L[0] = j[0];
      for (var M = 1; M < j.length; M++) L[M] = j[M] ^ j[0];
      return L;
    }(function(j, L) {
      var M = "odeA",
        y = "ch",
        g = [],
        C = 0;
      0 < L && (g[0] = L, C = 1);
      for (var u = 0; u < j.length; u++) g[u + C] = j[(y + k4C.B1 + k4C.S1 + k4C.u1 + M + k4C.y1)](u);
      return g;
    }(F, Math[(K + B + k4C.S1)](1024 * Math[(k4C.S1 + k4C.B1 + U + k4C.l1 + Y)]()))))));
  }
  var D = e,
    c = -x,
    t = k4C.n1;
  for (var I = k4C.V1; k4C.Z.r(I.toString(), I.toString().length, k) !== D; I++) {
    k4C.d1 < d && (a[k4C.d1] = d, P = k4C.V1);
    t += k4C.n1;
  }
  if (k4C.Z.r(t.toString(), t.toString().length, i) !== c) {
    k4C.d1 < d && (a[k4C.d1] = d, P = k4C.V1);
    k4C.d1 < d && (a[k4C.d1] = d, P = k4C.V1);
    return a;
  }
  P[(q + k4C.B1 + T + s + E + V)] = P[(W + l + k4C.y1 + w + f)] = function() {
    var j = "] }",
      L = "at",
      M = "() { [",
      y = "es",
      g = (9.60E1 < (85.0E1, 0x1B9) ? (98., "x") : (0x20F, 0x125)),
      C = ((6.11E2, 0xDA) >= 1.069E3 ? "" : 0xCB <= (82., 2.97E2) ? (123, " ") : (23., 105.)),
      u = ((0x231, 8.120E2) > 12 ? (1.171E3, "i") : (131, 90.)),
      F = "fun";
    return (F + k4C.C8 + k4C.y1 + u + k4C.u8 + U + C + u + g + y + Q + M + U + L + u + q + k4C.o1 + C + k4C.C8 + k4C.c1 + k4C.o1 + j);
  };
  return P;
}();
Still not easy to read of course, you might want to focus on specific functions rather than the whole thing. But the main problem here is lots of dummy logic being added - that code only exists to make things harder to understand. This cannot be reverted automatically.
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