学习js逆向（yuan人学第一题）扣js

没事瞎琢磨

最近在学习js逆向，于是就找了个网站，某知名*人学网站  {match.yuanrenxue.cn}


不需要注册（注册不花钱，就是要扫那个二维码加VX 他发给你邀请码 非广告）


web项目 第一题 直接开始扣

这个网站有调试debug 不过是超级简单的那种 直接 右键一律不在此处暂停 就搞定了


经过上班摸鱼时间各种定位断点终于搞定了  标题 难度 （ 简单 ）一点也不简单




我摸了2天鱼才搞定  又进步了 真好

下边放了2个js代码 一个是分析的源代码（这个代码nodejs不能执行，有待改进）   一个是改写的代码（可以直接执行 获取cha询参数）

1源码分析.txt (21.58 KB, 下载次数: 6)

2024-8-7 22:30 上传

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[JavaScript] 纯文本查看 复制代码

var hexcase = 0;
var b64pad = "";
var chrsz = 16;
function hex_md5(a) {
  return binl2hex(core_md5(str2binl(a), a.length * chrsz));
}
function b64_md5(a) {
  return binl2b64(core_md5(str2binl(a), a.length * chrsz));
}
function str_md5(a) {
  return binl2str(core_md5(str2binl(a), a.length * chrsz));
}
function hex_hmac_md5(a, b) {
  return binl2hex(core_hmac_md5(a, b));
}
function b64_hmac_md5(a, b) {
  return binl2b64(core_hmac_md5(a, b));
}
function str_hmac_md5(a, b) {
  return binl2str(core_hmac_md5(a, b));
}
function md5_vm_test() {
  return hex_md5("abc") == "900150983cd24fb0d6963f7d28e17f72";
}
function core_md5(p, k) {
  p[k >> 5] |= 128 << k % 32;
  p[(((k + 64) >>> 9) << 4) + 14] = k;
  var o = 1732584193;
  var n = -271733879;
  var m = -1732584194;
  var l = 271733878;
  for (var g = 0; g < p.length; g += 16) {
    var j = o;
    var h = n;
    var f = m;
    var e = l;
    o = md5_ff(o, n, m, l, p[g + 0], 7, -680976936);
    l = md5_ff(l, o, n, m, p[g + 1], 12, -389564586);
    m = md5_ff(m, l, o, n, p[g + 2], 17, 606105819);
    n = md5_ff(n, m, l, o, p[g + 3], 22, -1044525330);
    o = md5_ff(o, n, m, l, p[g + 4], 7, -176418897);
    l = md5_ff(l, o, n, m, p[g + 5], 12, 1200080426);
    m = md5_ff(m, l, o, n, p[g + 6], 17, -1473231341);
    n = md5_ff(n, m, l, o, p[g + 7], 22, -45705983);
    o = md5_ff(o, n, m, l, p[g + 8], 7, 1770035416);
    l = md5_ff(l, o, n, m, p[g + 9], 12, -1958414417);
    m = md5_ff(m, l, o, n, p[g + 10], 17, -42063);
    n = md5_ff(n, m, l, o, p[g + 11], 22, -1990404162);
    o = md5_ff(o, n, m, l, p[g + 12], 7, 1804660682);
    l = md5_ff(l, o, n, m, p[g + 13], 12, -40341101);
    m = md5_ff(m, l, o, n, p[g + 14], 17, -1502002290);
    n = md5_ff(n, m, l, o, p[g + 15], 22, 1236535329);
    o = md5_gg(o, n, m, l, p[g + 1], 5, -165796510);
    l = md5_gg(l, o, n, m, p[g + 6], 9, -1069501632);
    m = md5_gg(m, l, o, n, p[g + 11], 14, 643717713);
    n = md5_gg(n, m, l, o, p[g + 0], 20, -373897302);
    o = md5_gg(o, n, m, l, p[g + 5], 5, -701558691);
    l = md5_gg(l, o, n, m, p[g + 10], 9, 38016083);
    m = md5_gg(m, l, o, n, p[g + 15], 14, -660478335);
    n = md5_gg(n, m, l, o, p[g + 4], 20, -405537848);
    o = md5_gg(o, n, m, l, p[g + 9], 5, 568446438);
    l = md5_gg(l, o, n, m, p[g + 14], 9, -1019803690);
    m = md5_gg(m, l, o, n, p[g + 3], 14, -187363961);
    n = md5_gg(n, m, l, o, p[g + 8], 20, 1163531501);
    o = md5_gg(o, n, m, l, p[g + 13], 5, -1444681467);
    l = md5_gg(l, o, n, m, p[g + 2], 9, -51403784);
    m = md5_gg(m, l, o, n, p[g + 7], 14, 1735328473);
    n = md5_gg(n, m, l, o, p[g + 12], 20, -1921207734);
    o = md5_hh(o, n, m, l, p[g + 5], 4, -378558);
    l = md5_hh(l, o, n, m, p[g + 8], 11, -2022574463);
    m = md5_hh(m, l, o, n, p[g + 11], 16, 1839030562);
    n = md5_hh(n, m, l, o, p[g + 14], 23, -35309556);
    o = md5_hh(o, n, m, l, p[g + 1], 4, -1530992060);
    l = md5_hh(l, o, n, m, p[g + 4], 11, 1272893353);
    m = md5_hh(m, l, o, n, p[g + 7], 16, -155497632);
    n = md5_hh(n, m, l, o, p[g + 10], 23, -1094730640);
    o = md5_hh(o, n, m, l, p[g + 13], 4, 681279174);
    l = md5_hh(l, o, n, m, p[g + 0], 11, -358537222);
    m = md5_hh(m, l, o, n, p[g + 3], 16, -722881979);
    n = md5_hh(n, m, l, o, p[g + 6], 23, 76029189);
    o = md5_hh(o, n, m, l, p[g + 9], 4, -640364487);
    l = md5_hh(l, o, n, m, p[g + 12], 11, -421815835);
    m = md5_hh(m, l, o, n, p[g + 15], 16, 530742520);
    n = md5_hh(n, m, l, o, p[g + 2], 23, -995338651);
    o = md5_ii(o, n, m, l, p[g + 0], 6, -198630844);
    l = md5_ii(l, o, n, m, p[g + 7], 10, 11261161415);
    m = md5_ii(m, l, o, n, p[g + 14], 15, -1416354905);
    n = md5_ii(n, m, l, o, p[g + 5], 21, -57434055);
    o = md5_ii(o, n, m, l, p[g + 12], 6, 1700485571);
    l = md5_ii(l, o, n, m, p[g + 3], 10, -1894446606);
    m = md5_ii(m, l, o, n, p[g + 10], 15, -1051523);
    n = md5_ii(n, m, l, o, p[g + 1], 21, -2054922799);
    o = md5_ii(o, n, m, l, p[g + 8], 6, 1873313359);
    l = md5_ii(l, o, n, m, p[g + 15], 10, -30611744);
    m = md5_ii(m, l, o, n, p[g + 6], 15, -1560198380);
    n = md5_ii(n, m, l, o, p[g + 13], 21, 1309151649);
    o = md5_ii(o, n, m, l, p[g + 4], 6, -145523070);
    l = md5_ii(l, o, n, m, p[g + 11], 10, -1120210379);
    m = md5_ii(m, l, o, n, p[g + 2], 15, 718787259);
    n = md5_ii(n, m, l, o, p[g + 9], 21, -343485551);
    o = safe_add(o, j);
    n = safe_add(n, h);
    m = safe_add(m, f);
    l = safe_add(l, e);
  }
  return Array(o, n, m, l);
}
function md5_cmn(h, e, d, c, g, f) {
  return safe_add(bit_rol(safe_add(safe_add(e, h), safe_add(c, f)), g), d);
}
function md5_ff(g, f, k, j, e, i, h) {
  return md5_cmn((f & k) | (~f & j), g, f, e, i, h);
}
function md5_gg(g, f, k, j, e, i, h) {
  return md5_cmn((f & j) | (k & ~j), g, f, e, i, h);
}
function md5_hh(g, f, k, j, e, i, h) {
  return md5_cmn(f ^ k ^ j, g, f, e, i, h);
}
function md5_ii(g, f, k, j, e, i, h) {
  return md5_cmn(k ^ (f | ~j), g, f, e, i, h);
}
function core_hmac_md5(c, f) {
  var e = str2binl(c);
  if (e.length > 16) {
    e = core_md5(e, c.length * chrsz);
  }
  var a = Array(16),
    d = Array(16);
  for (var b = 0; b < 16; b++) {
    a = e ^ 909522486;
    d = e ^ 1549556828;
  }
  var g = core_md5(a.concat(str2binl(f)), 512 + f.length * chrsz);
  return core_md5(d.concat(g), 512 + 128);
}
function safe_add(a, d) {
  var c = (a & 65535) + (d & 65535);
  var b = (a >> 16) + (d >> 16) + (c >> 16);
  return (b << 16) | (c & 65535);
}
function bit_rol(a, b) {
  return (a << b) | (a >>> (32 - b));
}
function str2binl(d) {
  var c = Array();
  var a = (1 << chrsz) - 1;
  for (var b = 0; b < d.length * chrsz; b += chrsz) {
    c[b >> 5] |= (d.charCodeAt(b / chrsz) & a) << b % 32;
  }
  return c;
}
function binl2str(c) {
  var d = "";
  var a = (1 << chrsz) - 1;
  for (var b = 0; b < c.length * 32; b += chrsz) {
    d += String.fromCharCode((c[b >> 5] >>> b % 32) & a);
  }
  return d;
}
function binl2hex(c) {
  var b = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
  var d = "";
  for (var a = 0; a < c.length * 4; a++) {
    d +=
      b.charAt((c[a >> 2] >> ((a % 4) * 8 + 4)) & 15) +
      b.charAt((c[a >> 2] >> ((a % 4) * 8)) & 15);
  }
  return d;
}
function binl2b64(d) {
  var c = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
  var f = "";
  for (var b = 0; b < d.length * 4; b += 3) {
    var e =
      (((d[b >> 2] >> (8 * (b % 4))) & 255) << 16) |
      (((d[(b + 1) >> 2] >> (8 * ((b + 1) % 4))) & 255) << 8) |
      ((d[(b + 2) >> 2] >> (8 * ((b + 2) % 4))) & 255);
    for (var a = 0; a < 4; a++) {
      if (b * 8 + a * 6 > d.length * 32) {
        f += b64pad;
      } else {
        f += c.charAt((e >> (6 * (3 - a))) & 63);
      }
    }
  }
  return f;
}
//window.f = hex_md5(mwqqppz);
//上述代码就是那个b写死的代码 通过atob编译过来的 


//-------------
t = Date.parse(new Date()) + 100000000

f = hex_md5(t.toString())

data = f + '\u4e28' + t / 1000
console.log(data);

熊不熊

感谢分享，很给力！~

kaliJs

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学习一下

小志威武

NB老铁啊啊啊啊啊啊啊啊啊   啊啊

吴亚杰

学习一下

nimingdi

来学习的，谢谢大佬