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JS加密分析

 

 

 

 

 

 

编码

调试JS

得到参数

var userNowTime = Date.parse(Date()) /1000

var md5 = function(value) {

var hex_chr = "0123456789abcdef",
rhex = function(num) {
    var str = "";
    for (j = 0; j <= 3; j++) str += hex_chr.charAt((num >> (j * 8 + 4)) & 0x0F) + hex_chr.charAt((num >> (j * 8)) & 0x0F);
    return str;
},
str2blks_MD5 = function(str) {
    nblk = ((str.length + 8) >> 6) + 1;
    blks = new Array(nblk * 16);
    for (i = 0; i < nblk * 16; i++) blks[i] = 0;
    for (i = 0; i < str.length; i++) blks[i >> 2] |= str.charCodeAt(i) << ((i % 4) * 8);
    blks[i >> 2] |= 0x80 << ((i % 4) * 8);
    blks[nblk * 16 - 2] = str.length * 8;
    return blks;
},
add = function(x, y) {
    var lsw = (x & 0xFFFF) + (y & 0xFFFF);
    var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
    return (msw << 16) | (lsw & 0xFFFF);
},
rol = function(num, cnt) {
    return (num << cnt) | (num >>> (32 - cnt));
},
cmn = function(q, a, b, x, s, t) {
    return add(rol(add(add(a, q), add(x, t)), s), b);
},
ff = function(a, b, c, d, x, s, t) {
    return cmn((b & c) | ((~b) & d), a, b, x, s, t);
},
gg = function(a, b, c, d, x, s, t) {
    return cmn((b & d) | (c & (~d)), a, b, x, s, t);
},
hh = function(a, b, c, d, x, s, t) {
    return cmn(b ^ c ^ d, a, b, x, s, t);
},
ii = function(a, b, c, d, x, s, t) {
    return cmn(c ^ (b | (~d)), a, b, x, s, t);
},
MD5 = function(str) {
    x = str2blks_MD5(str);
    var a = 1732584193;
    var b = -271733879;
    var c = -1732584194;
    var d = 271733878;

    for (i = 0; i < x.length; i += 16) {
        var olda = a;
        var oldb = b;
        var oldc = c;
        var oldd = d;

        a = ff(a, b, c, d, x[i + 0], 7, -680876936);
        d = ff(d, a, b, c, x[i + 1], 12, -389564586);
        c = ff(c, d, a, b, x[i + 2], 17, 606105819);
        b = ff(b, c, d, a, x[i + 3], 22, -1044525330);
        a = ff(a, b, c, d, x[i + 4], 7, -176418897);
        d = ff(d, a, b, c, x[i + 5], 12, 1200080426);
        c = ff(c, d, a, b, x[i + 6], 17, -1473231341);
        b = ff(b, c, d, a, x[i + 7], 22, -45705983);
        a = ff(a, b, c, d, x[i + 8], 7, 1770035416);
        d = ff(d, a, b, c, x[i + 9], 12, -1958414417);
        c = ff(c, d, a, b, x[i + 10], 17, -42063);
        b = ff(b, c, d, a, x[i + 11], 22, -1990404162);
        a = ff(a, b, c, d, x[i + 12], 7, 1804603682);
        d = ff(d, a, b, c, x[i + 13], 12, -40341101);
        c = ff(c, d, a, b, x[i + 14], 17, -1502002290);
        b = ff(b, c, d, a, x[i + 15], 22, 1236535329);

        a = gg(a, b, c, d, x[i + 1], 5, -165796510);
        d = gg(d, a, b, c, x[i + 6], 9, -1069501632);
        c = gg(c, d, a, b, x[i + 11], 14, 643717713);
        b = gg(b, c, d, a, x[i + 0], 20, -373897302);
        a = gg(a, b, c, d, x[i + 5], 5, -701558691);
        d = gg(d, a, b, c, x[i + 10], 9, 38016083);
        c = gg(c, d, a, b, x[i + 15], 14, -660478335);
        b = gg(b, c, d, a, x[i + 4], 20, -405537848);
        a = gg(a, b, c, d, x[i + 9], 5, 568446438);
        d = gg(d, a, b, c, x[i + 14], 9, -1019803690);
        c = gg(c, d, a, b, x[i + 3], 14, -187363961);
        b = gg(b, c, d, a, x[i + 8], 20, 1163531501);
        a = gg(a, b, c, d, x[i + 13], 5, -1444681467);
        d = gg(d, a, b, c, x[i + 2], 9, -51403784);
        c = gg(c, d, a, b, x[i + 7], 14, 1735328473);
        b = gg(b, c, d, a, x[i + 12], 20, -1926607734);

        a = hh(a, b, c, d, x[i + 5], 4, -378558);
        d = hh(d, a, b, c, x[i + 8], 11, -2022574463);
        c = hh(c, d, a, b, x[i + 11], 16, 1839030562);
        b = hh(b, c, d, a, x[i + 14], 23, -35309556);
        a = hh(a, b, c, d, x[i + 1], 4, -1530992060);
        d = hh(d, a, b, c, x[i + 4], 11, 1272893353);
        c = hh(c, d, a, b, x[i + 7], 16, -155497632);
        b = hh(b, c, d, a, x[i + 10], 23, -1094730640);
        a = hh(a, b, c, d, x[i + 13], 4, 681279174);
        d = hh(d, a, b, c, x[i + 0], 11, -358537222);
        c = hh(c, d, a, b, x[i + 3], 16, -722521979);
        b = hh(b, c, d, a, x[i + 6], 23, 76029189);
        a = hh(a, b, c, d, x[i + 9], 4, -640364487);
        d = hh(d, a, b, c, x[i + 12], 11, -421815835);
        c = hh(c, d, a, b, x[i + 15], 16, 530742520);
        b = hh(b, c, d, a, x[i + 2], 23, -995338651);

        a = ii(a, b, c, d, x[i + 0], 6, -198630844);
        d = ii(d, a, b, c, x[i + 7], 10, 1126891415);
        c = ii(c, d, a, b, x[i + 14], 15, -1416354905);
        b = ii(b, c, d, a, x[i + 5], 21, -57434055);
        a = ii(a, b, c, d, x[i + 12], 6, 1700485571);
        d = ii(d, a, b, c, x[i + 3], 10, -1894986606);
        c = ii(c, d, a, b, x[i + 10], 15, -1051523);
        b = ii(b, c, d, a, x[i + 1], 21, -2054922799);
        a = ii(a, b, c, d, x[i + 8], 6, 1873313359);
        d = ii(d, a, b, c, x[i + 15], 10, -30611744);
        c = ii(c, d, a, b, x[i + 6], 15, -1560198380);
        b = ii(b, c, d, a, x[i + 13], 21, 1309151649);
        a = ii(a, b, c, d, x[i + 4], 6, -145523070);
        d = ii(d, a, b, c, x[i + 11], 10, -1120210379);
        c = ii(c, d, a, b, x[i + 2], 15, 718787259);
        b = ii(b, c, d, a, x[i + 9], 21, -343485551);

        a = add(a, olda);
        b = add(b, oldb);
        c = add(c, oldc);
        d = add(d, oldd);
    }
    return rhex(a) + rhex(b) + rhex(c) + rhex(d);
};

return MD5(value);
}

登录

import execjs
import requests


def get_password_time(password):
    with open('aipai.js', encoding='utf-8') as f:
        js_code = f.read()

    ctx = execjs.compile(js_code)
    password = ctx.call('md5', password)
    userNowTime = ctx.eval('userNowTime')
    return password, userNowTime


def login(account):
    url = 'http://www.aipai.com/login.php'
    data = dict(
        action='loginNew',
        user=account['user'],
        password=account['password'][0],
        keeplogin='1',
        comouterTime='1',
        userNowTime=account['password'][1],
    )
    print(data)
    headers = {
        "User-Agent": "mozilla/4.0 (compatible; MSIE 5.5; Windows NT)",
    }

    resp = requests.post(url, headers=headers, data=data)
    print(resp.status_code)
    print(resp.text)


if __name__ == '__main__':
    account = dict(
        user='18879404697',
        password=get_password_time(password='123456'),
    )
    login(account)

{
    "code":0,
    "login":"69179585",
    "user":{
        "bid":"69179585",
        "password":"2f786aac18ddbacb312cf60fd0ca2d7a",
        "email":"18879404697@aipaimobile.com",
        "nickname":"ecithy",
        "exp":"90",
        "gender":"1",
        "sid":"0",
        "flower":"0",
        "level":"2",
        "clientLasttime":"0",
        "createTime":"1590763267",
        "status":"0",
        "type":"0",
        "bookCount":"0",
        "cardCount":"0",
        "achieve":"0",
        "vip":"0",
        "userText":null,
        "lasttime":"1590763267",
        "levelName":"布衣2级",
        "levelCss":"u1_lv2",
        "levelCssWebApp":"uv_1",
        "expTotal":200,
        "achieveName":"初学乍练",
        "small":"http://www.aipai.com/app/www/templates/common/img/userdefaultnew_5_1_small.jpg",
        "middle":"http://www.aipai.com/app/www/templates/common/img/userdefaultnew_5_1_middle.jpg",
        "_48":"http://www.aipai.com/app/www/templates/common/img/userdefaultnew_5_1__48.jpg",
        "big":"http://www.aipai.com/app/www/templates/common/img/userdefaultnew_5_1_big.jpg",
        "normal":"http://www.aipai.com/app/www/templates/common/img/userdefaultnew_5_1_normal.jpg",
        "thumbFileName":"http://www.aipai.com/app/www/templates/common/img/userdefaultnew_5_1_big.jpg",
        "url":"http://www.aipai.com/space.php?bid=69179585",
        "homeUrl":"http://home.aipai.com/69179585"
    },
    "msg":"login success"
}