逆向扣代码之SM4加解密

àì夳堔傛蜴生んèń 2024-02-20 11:45 46阅读 0赞

最近逆向扣了个SM4的JS版本，希望对大家有帮助，直接上代码

let window = globalThis;
    
    !(function (_0x56f7e2) {
    
    
        let _0x41a83e = {};
    
        for (var _0x1f31ed = [], _0x602c0d = [], _0xa8a870 = "undefined" !== typeof Uint8Array ? Uint8Array : Array, _0x5dcbf9 = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/', _0x48924e = 0, _0x1c4081 = _0x5dcbf9['length']; _0x48924e < _0x1c4081; ++_0x48924e) _0x1f31ed[_0x48924e] = _0x5dcbf9[_0x48924e], _0x602c0d[_0x5dcbf9["charCodeAt"](_0x48924e)] = _0x48924e;
    
    
        function _0x545d88(_0x5a2578) {
            return _0x1f31ed[_0x5a2578 >> 18 & 63] + _0x1f31ed[_0x5a2578 >> 12 & 63] + _0x1f31ed[_0x5a2578 >> 6 & 63] + _0x1f31ed[63 & _0x5a2578];
        }
    
        function _0x1592bd(_0x129cf8, _0x1d044b, _0x2945c3) {
            for (var _0x4c0606, _0x3eeaeb = [], _0x3b9a83 = _0x1d044b; _0x3b9a83 < _0x2945c3; _0x3b9a83 += 3) _0x4c0606 = (_0x129cf8[_0x3b9a83] << 16) + (_0x129cf8[_0x3b9a83 + 1] << 8) + _0x129cf8[_0x3b9a83 + 2], _0x3eeaeb["push"](_0x545d88(_0x4c0606));
    
            return _0x3eeaeb["join"]('');
        }
    
        function _0x186be1(_0x26e04b) {
            for (var _0x1aec60, _0x5c6a30 = _0x26e04b['length'], _0x2ae050 = _0x5c6a30 % 3, _0xf372b3 = '', _0x1dec22 = [], _0x548052 = 16383, _0x1f1a17 = 0, _0x2f351f = _0x5c6a30 - _0x2ae050; _0x1f1a17 < _0x2f351f; _0x1f1a17 += _0x548052) _0x1dec22["push"](_0x1592bd(_0x26e04b, _0x1f1a17, _0x1f1a17 + _0x548052 > _0x2f351f ? _0x2f351f : _0x1f1a17 + _0x548052));
    
            return 1 === _0x2ae050 ? (_0x1aec60 = _0x26e04b[_0x5c6a30 - 1], _0xf372b3 += _0x1f31ed[_0x1aec60 >> 2], _0xf372b3 += _0x1f31ed[_0x1aec60 << 4 & 63], _0xf372b3 += '==') : 2 === _0x2ae050 && (_0x1aec60 = (_0x26e04b[_0x5c6a30 - 2] << 8) + _0x26e04b[_0x5c6a30 - 1], _0xf372b3 += _0x1f31ed[_0x1aec60 >> 10], _0xf372b3 += _0x1f31ed[_0x1aec60 >> 4 & 63], _0xf372b3 += _0x1f31ed[_0x1aec60 << 2 & 63], _0xf372b3 += '='), _0x1dec22["push"](_0xf372b3), _0x1dec22["join"]('');
        }
    
        function _0x22b4f6(_0x1314f3) {
          var _0xf26a7a = _0x1314f3["length"];
          if (_0xf26a7a % 4 > 0) throw new Error("Invalid string. Length must be a multiple of 4");
          return '=' === _0x1314f3[_0xf26a7a - 2] ? 2 : '=' === _0x1314f3[_0xf26a7a - 1] ? 1 : 0;
        }
    
        function _0x2933ce(_0x31351a) {
            var _0x320013,
                _0x504162,
                _0x2b46cc,
                _0x21001f,
                _0x24a5c4,
                _0x4987d2 = _0x31351a["length"];
    
            _0x21001f = _0x22b4f6(_0x31351a), _0x24a5c4 = new _0xa8a870(3 * _0x4987d2 / 4 - _0x21001f), _0x504162 = _0x21001f > 0 ? _0x4987d2 - 4 : _0x4987d2;
            var _0x1e4968 = 0;
    
            for (_0x320013 = 0; _0x320013 < _0x504162; _0x320013 += 4) _0x2b46cc = _0x602c0d[_0x31351a["charCodeAt"](_0x320013)] << 18 | _0x602c0d[_0x31351a["charCodeAt"](_0x320013 + 1)] << 12 | _0x602c0d[_0x31351a["charCodeAt"](_0x320013 + 2)] << 6 | _0x602c0d[_0x31351a["charCodeAt"](_0x320013 + 3)], _0x24a5c4[_0x1e4968++] = _0x2b46cc >> 16 & 255, _0x24a5c4[_0x1e4968++] = _0x2b46cc >> 8 & 255, _0x24a5c4[_0x1e4968++] = 255 & _0x2b46cc;
    
            return 2 === _0x21001f ? (_0x2b46cc = _0x602c0d[_0x31351a["charCodeAt"](_0x320013)] << 2 | _0x602c0d[_0x31351a["charCodeAt"](_0x320013 + 1)] >> 4, _0x24a5c4[_0x1e4968++] = 255 & _0x2b46cc) : 1 === _0x21001f && (_0x2b46cc = _0x602c0d[_0x31351a["charCodeAt"](_0x320013)] << 10 | _0x602c0d[_0x31351a["charCodeAt"](_0x320013 + 1)] << 4 | _0x602c0d[_0x31351a["charCodeAt"](_0x320013 + 2)] >> 2, _0x24a5c4[_0x1e4968++] = _0x2b46cc >> 8 & 255, _0x24a5c4[_0x1e4968++] = 255 & _0x2b46cc), _0x24a5c4;
          }
    
        _0x41a83e["fromByteArray"] = _0x186be1;
        _0x41a83e["toByteArray"] = _0x2933ce;
    
        window["SM4"] = _0x56f7e2, encrypt = 1, decrypt = 0, round = 32, block = 16;
        var _0x163d40 = [214, 144, 233, 254, 204, 225, 61, 183, 22, 182, 20, 194, 40, 251, 44, 5, 43, 103, 154, 118, 42, 190, 4, 195, 170, 68, 19, 38, 73, 134, 6, 153, 156, 66, 80, 244, 145, 239, 152, 122, 51, 84, 11, 67, 237, 207, 172, 98, 228, 179, 28, 169, 201, 8, 232, 149, 128, 223, 148, 250, 117, 143, 63, 166, 71, 7, 167, 252, 243, 115, 23, 186, 131, 89, 60, 25, 230, 133, 79, 168, 104, 107, 129, 178, 113, 100, 218, 139, 248, 235, 15, 75, 112, 86, 157, 53, 30, 36, 14, 94, 99, 88, 209, 162, 37, 34, 124, 59, 1, 33, 120, 135, 212, 0, 70, 87, 159, 211, 39, 82, 76, 54, 2, 231, 160, 196, 200, 158, 234, 191, 138, 210, 64, 199, 56, 181, 163, 247, 242, 206, 249, 97, 21, 161, 224, 174, 93, 164, 155, 52, 26, 85, 173, 147, 50, 48, 245, 140, 177, 227, 29, 246, 226, 46, 130, 102, 202, 96, 192, 41, 35, 171, 13, 83, 78, 111, 213, 219, 55, 69, 222, 253, 142, 47, 3, 255, 106, 114, 109, 108, 91, 81, 141, 27, 175, 146, 187, 221, 188, 127, 17, 217, 92, 65, 31, 16, 90, 216, 10, 193, 49, 136, 165, 205, 123, 189, 45, 116, 208, 18, 184, 229, 180, 176, 137, 105, 151, 74, 12, 150, 119, 126, 101, 185, 241, 9, 197, 110, 198, 132, 24, 240, 125, 236, 58, 220, 77, 32, 121, 238, 95, 62, 215, 203, 57, 72],
            _0xef5b52 = [462357, 472066609, 943670861, 1415275113, 1886879365, 2358483617, 2830087869, 3301692121, 3773296373, 4228057617, 404694573, 876298825, 1347903077, 1819507329, 2291111581, 2762715833, 3234320085, 3705924337, 4177462797, 337322537, 808926789, 1280531041, 1752135293, 2223739545, 2695343797, 3166948049, 3638552301, 4110090761, 269950501, 741554753, 1213159005, 1684763257];
    
        function _0x3f6bee(_0x32d877) {
          var _0x36b8f2,
              _0x1f9cb0,
              _0x3e026f = new Array();
    
          _0x36b8f2 = _0x32d877["length"];
    
          for (var _0x109944 = 0; _0x109944 < _0x36b8f2; _0x109944++) _0x1f9cb0 = _0x32d877['charCodeAt'](_0x109944), _0x1f9cb0 >= 65536 && _0x1f9cb0 <= 1114111 ? (_0x3e026f['push'](_0x1f9cb0 >> 18 & 7 | 240), _0x3e026f["push"](_0x1f9cb0 >> 12 & 63 | 128), _0x3e026f["push"](_0x1f9cb0 >> 6 & 63 | 128), _0x3e026f["push"](63 & _0x1f9cb0 | 128)) : _0x1f9cb0 >= 2048 && _0x1f9cb0 <= 65535 ? (_0x3e026f['push'](_0x1f9cb0 >> 12 & 15 | 224), _0x3e026f["push"](_0x1f9cb0 >> 6 & 63 | 128), _0x3e026f["push"](63 & _0x1f9cb0 | 128)) : _0x1f9cb0 >= 128 && _0x1f9cb0 <= 2047 ? (_0x3e026f["push"](_0x1f9cb0 >> 6 & 31 | 192), _0x3e026f["push"](63 & _0x1f9cb0 | 128)) : _0x3e026f["push"](255 & _0x1f9cb0);
    
          return _0x3e026f;
        }
    
        function _0x3d2490(_0x3c4bfa) {
          if ('string' === typeof _0x3c4bfa) return _0x3c4bfa;
    
          for (var _0x2cef50 = '', _0x557dd1 = _0x3c4bfa, _0x12050f = 0; _0x12050f < _0x557dd1["length"]; _0x12050f++) {
            var _0x1e30f1 = _0x557dd1[_0x12050f]["toString"](2),
                _0x31895e = _0x1e30f1["match"](/^1+?(?=0)/);
    
            if (_0x31895e && 8 == _0x1e30f1["length"]) {
              for (var _0x165cfa = _0x31895e[0]['length'], _0x460d21 = _0x557dd1[_0x12050f]["toString"](2)["slice"](7 - _0x165cfa), _0x17d762 = 1; _0x17d762 < _0x165cfa; _0x17d762++) _0x460d21 += _0x557dd1[_0x17d762 + _0x12050f]['toString'](2)["slice"](2);
    
              _0x2cef50 += String['fromCharCode'](parseInt(_0x460d21, 2)), _0x12050f += _0x165cfa - 1;
            } else _0x2cef50 += String['fromCharCode'](_0x557dd1[_0x12050f]);
          }
    
          return _0x2cef50;
        }
    
        rotl = function (_0x1ecc39, _0x2d2903) {
          return _0x1ecc39 << _0x2d2903 | _0x1ecc39 >>> 32 - _0x2d2903;
        }, "SF89ASDF897A", byteSub = function (_0x27243c) {
          return (255 & _0x163d40[_0x27243c >>> 24 & 255]) << 24 | (255 & _0x163d40[_0x27243c >>> 16 & 255]) << 16 | (255 & _0x163d40[_0x27243c >>> 8 & 255]) << 8 | 255 & _0x163d40[255 & _0x27243c];
        }, l1 = function (_0x2ba4d2) {
          return _0x2ba4d2 ^ rotl(_0x2ba4d2, 2) ^ rotl(_0x2ba4d2, 10) ^ rotl(_0x2ba4d2, 18) ^ rotl(_0x2ba4d2, 24);
        }, l2 = function (_0x93f207) {
          return _0x93f207 ^ rotl(_0x93f207, 13) ^ rotl(_0x93f207, 23);
        }, "S89DF8G79A7", 
        sms4Crypt = function (_0x1ff67a, _0x48eaad, _0x310ee7) {
          var _0x825946, _0x91388c;
    
          x = new Array(4), tmp = new Array(4);
    
          for (var _0x53c55d = 0; _0x53c55d < 4; _0x53c55d++) tmp[0] = 255 & _0x1ff67a[0 + 4 * _0x53c55d], tmp[1] = 255 & _0x1ff67a[1 + 4 * _0x53c55d], tmp[2] = 255 & _0x1ff67a[2 + 4 * _0x53c55d], tmp[3] = 255 & _0x1ff67a[3 + 4 * _0x53c55d], x[_0x53c55d] = tmp[0] << 24 | tmp[1] << 16 | tmp[2] << 8 | tmp[3];
    
          for (_0x825946 = 0; _0x825946 < 32; _0x825946 += 4) _0x91388c = x[1] ^ x[2] ^ x[3] ^ _0x310ee7[_0x825946 + 0], _0x91388c = byteSub(_0x91388c), x[0] = x[0] ^ l1(_0x91388c), _0x91388c = x[2] ^ x[3] ^ x[0] ^ _0x310ee7[_0x825946 + 1], _0x91388c = byteSub(_0x91388c), x[1] = x[1] ^ l1(_0x91388c), _0x91388c = x[3] ^ x[0] ^ x[1] ^ _0x310ee7[_0x825946 + 2], _0x91388c = byteSub(_0x91388c), x[2] = x[2] ^ l1(_0x91388c), _0x91388c = x[0] ^ x[1] ^ x[2] ^ _0x310ee7[_0x825946 + 3], _0x91388c = byteSub(_0x91388c), x[3] = x[3] ^ l1(_0x91388c);
    
          for (var _0x2e37c3 = 0; _0x2e37c3 < 16; _0x2e37c3 += 4) _0x48eaad[_0x2e37c3] = x[3 - _0x2e37c3 / 4] >>> 24 & 255, _0x48eaad[_0x2e37c3 + 1] = x[3 - _0x2e37c3 / 4] >>> 16 & 255, _0x48eaad[_0x2e37c3 + 2] = x[3 - _0x2e37c3 / 4] >>> 8 & 255, _0x48eaad[_0x2e37c3 + 3] = 255 & x[3 - _0x2e37c3 / 4];
        }, '8S9D7F89A', sms4KeyExt = function (_0x81ae7b, _0x34c421, _0x114f7b) {
          for (var _0x3be04e, _0x45d1af, _0x15cf46 = new Array(), _0x404784 = new Array(4), _0x2982c0 = 0; _0x2982c0 < 4; _0x2982c0++) _0x404784[0] = 255 & _0x81ae7b[0 + 4 * _0x2982c0], _0x404784[1] = 255 & _0x81ae7b[1 + 4 * _0x2982c0], _0x404784[2] = 255 & _0x81ae7b[2 + 4 * _0x2982c0], _0x404784[3] = 255 & _0x81ae7b[3 + 4 * _0x2982c0], _0x15cf46[_0x2982c0] = _0x404784[0] << 24 | _0x404784[1] << 16 | _0x404784[2] << 8 | _0x404784[3];
    
          for (_0x15cf46[0] ^= 2746333894, _0x15cf46[1] ^= 1453994832, _0x15cf46[2] ^= 1736282519, _0x15cf46[3] ^= 2993693404, _0x3be04e = 0; _0x3be04e < 32; _0x3be04e += 4) _0x45d1af = _0x15cf46[1] ^ _0x15cf46[2] ^ _0x15cf46[3] ^ _0xef5b52[_0x3be04e + 0], _0x45d1af = byteSub(_0x45d1af), _0x34c421[_0x3be04e + 0] = _0x15cf46[0] ^= l2(_0x45d1af), _0x45d1af = _0x15cf46[2] ^ _0x15cf46[3] ^ _0x15cf46[0] ^ _0xef5b52[_0x3be04e + 1], _0x45d1af = byteSub(_0x45d1af), _0x34c421[_0x3be04e + 1] = _0x15cf46[1] ^= l2(_0x45d1af), _0x45d1af = _0x15cf46[3] ^ _0x15cf46[0] ^ _0x15cf46[1] ^ _0xef5b52[_0x3be04e + 2], _0x45d1af = byteSub(_0x45d1af), _0x34c421[_0x3be04e + 2] = _0x15cf46[2] ^= l2(_0x45d1af), _0x45d1af = _0x15cf46[0] ^ _0x15cf46[1] ^ _0x15cf46[2] ^ _0xef5b52[_0x3be04e + 3], _0x45d1af = byteSub(_0x45d1af), _0x34c421[_0x3be04e + 3] = _0x15cf46[3] ^= l2(_0x45d1af);
    
          if (_0x114f7b === decrypt) {
            for (_0x3be04e = 0; _0x3be04e < 16; _0x3be04e++) _0x45d1af = _0x34c421[_0x3be04e], _0x34c421[_0x3be04e] = _0x34c421[31 - _0x3be04e], _0x34c421[31 - _0x3be04e] = _0x45d1af;
          }
        }, _0x56f7e2["_gencode"] = _gencode = function (_0x552488, _0x1862ab) {
          point = 0, inLen = 16;
    
          var _0x2d3ae2 = new Array(round);
    
          sms4KeyExt(_0x552488['key'], _0x2d3ae2, _0x1862ab);
    
          var _0x532cb4 = new Array(16),
              _0x20763e = new Array(16),
              _0x34328c = [];
    
          while (inLen >= block) _0x532cb4 = _0x552488["source"]['slice'](point, point + 16), sms4Crypt(_0x532cb4, _0x20763e, _0x2d3ae2), _0x34328c = _0x34328c["concat"](_0x20763e), inLen -= block, point += block;
    
          return _0x34328c;
        }, _0x56f7e2["encode"] = function (_0x57d649, _0x1d3b2a) {
          for (var _0x1fa3c6 = _0x3f6bee(_0x57d649), _0x1f5e09 = _0x3f6bee(_0x1d3b2a), _0x2609b5 = [], _0x1a77eb = 0; _0x1a77eb < _0x1fa3c6['length']; _0x1a77eb += 16) _0x2609b5 = _0x2609b5["concat"](_gencode({
            'source': _0x1fa3c6["slice"](_0x1a77eb, _0x1a77eb + 16),
            'key': _0x1f5e09
          }, encrypt));
    
          return _0x41a83e["fromByteArray"](_0x2609b5);
        }, _0x56f7e2["decode"] = function (_0x19e67d, _0x3a2679) {
          for (var _0x193676 = _0x41a83e['toByteArray'](_0x19e67d), _0x264d28 = _0x3f6bee(_0x3a2679), _0x1b5139 = [], _0x193daf = 0; _0x193daf < _0x193676["length"]; _0x193daf += 16) _0x1b5139 = _0x1b5139["concat"](_gencode({
            'source': _0x193676["slice"](_0x193daf, _0x193daf + 16),
            'key': _0x264d28
          }, decrypt));
    
          return _0x3d2490(_0x1b5139)["replace"](/(\s*$)/g, '');
        };
    
      })(window);
    
    //let res = window.encode('123456','H24JW1GF2TK8W67H7K8T');
    //console.log(res);
    
    //let data = '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';
    //let secret = 'M8NWTD68D35Q45A1EMFD';
    
    //let res =  window.decode(data,secret);
    
    //console.log(res);
    
    //let str = 'rZU0IRpbVbkhtAY2rgu1UY43uRSPUpz5FzmvfMtGKZVswuU1z+h7aRrK1wTJ898+Ea3Qi2AMOGDg\nUYJR2qzEY+3QuvfELhJBdktINqQZvT1IBTQEh5LCeiYe6X7737o3aPNSP1yS47ISlleAoWTji26S\nwEbtoJolau/uMiifR5/R1HyuhoqJdiL6lEwHCHgESS1qqR3YcsVyKShuUtCOKDsaYyiZj1GMoFTK\nAvCPqBONns+122UzXScCy8qMrEphJkfDvDNd5vrH12Wco/D39BI7ZJRxUz5OYazvUBuguekWSoZ9\nV1UHwX3jWc9ahiph5Qg3e0A2NQD8k+Z2a7HkLBJ5o/kw02HfnOYeGP7b+ha9HihC2z4otjoP0BsQ\njtC2Xw0gciYRrcSTlWFTra+xbYCPNnPtZ1XvdOjkEqHZkdbOUEGaOqjw/FzQx8Opft12ibEsW497\n+rXuQxsV1HifhNYQBRzR3EuHQdRedQ0tpgv+J/siA7ycBrOMX4IHNwe4tvcps5O6rSKoBfXOEOHb\nRw3hi7A8FE1seUcyJim33JCv4r+9mn8UhbextvKVNYOb';
    //let res = str.replaceAll('\n','');
    //console.log(res);
    
    var dataSm4Util = {};
    dataSm4Util.encode = window.encode;
    dataSm4Util.decode = window.decode;
    
    module.exports = dataSm4Util;

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在逆向时，有时候需要扣JS，将其中算法扣出来，遇到了webpack怎么扣呢。 webpack含有很多模块，在使用时，其实就是使用JS加载模块后，调用模块中的函数即可，具体DE

布满荆棘的人生/ 2024年02月20日 11:45/ 0 赞/ 42 阅读

相关 SM4加解密详细流程

> 加解密详细流程： > 1.双方通过SmUtil.sm2()，各自生成一对SM2公私钥，然后互相交换公钥 > 2.加密: 用发送方公钥的前16位作为SM4密钥，加密得

爱被打了一巴掌/ 2024年02月18日 10:33/ 0 赞/ 47 阅读

相关 Java SM4加密解密

依赖 <dependency> <groupId>org.bouncycastle</groupId> <artifactId>b

偏执的太偏执、/ 2023年10月09日 23:24/ 0 赞/ 37 阅读

相关 SM4算法加解密及实现

SM4 是什么？ SM4.0（原名SMS4.0）是中华人民共和国政府采用的一种[分组密码][Link 1]标准，由国家密码管理局于2012年3月21日发布。相关标准为“G

你的名字/ 2023年09月25日 22:07/ 0 赞/ 118 阅读

相关【Java加解密系列】- SM2加解密

上一篇博客介绍了SM2算法生成密钥的过程，详见-[SM2生成密钥][SM2]。这篇博客接着介绍SM2算法如何用上篇博客生成的密钥进行加解密操作。因为密钥都是byte数组，在

淩亂°似流年/ 2022年12月25日 05:50/ 0 赞/ 183 阅读

相关关于 SM4 加秘密解密的工具类（转载）

1、需要依赖： <dependency> <groupId>org.bouncycastle</groupId>

怼烎@/ 2022年12月10日 08:55/ 0 赞/ 106 阅读

相关 python实现SM4加解密源码分析

第一步：密钥拓展。第二步：加密第三步：解密（机密的过程与加密完全相同，只不过加密的时候密钥是从rk0开始的，解密是从rk31开始的） -- codin

我不是女神ヾ/ 2022年04月24日 13:08/ 0 赞/ 140 阅读