首先打开易盾官网，依次单击“在线体验”和“滑块拼图”选项，出现如下图所示的滑块验证码，滑动后发现Network面板成功抓包。
如图所示 其中主要的加密参数可以看出来就是acToken以及cb 我们接着下断点往下走
我通过上图可以看到 acToken，同时也发现了data，这里 data 先放一下，我们追溯 acToken ，这里我们就看栈，通过栈追溯到它。
这里我是在箭头指的这个栈对应的位置打的断点。这里我们再次让网页运行，当断点断到这里时，可以看到当前栈之上的栈没有 acToken 类似样式的值出现，那就说明，acToken 是在这里或者之后出现的，我们先分析当前的，看看是否是，如若不是再继续向下找。这里我们进入上面函数 cc
这里我们在 开头 以及两个 return 处打上断点，这里我们让它自己运行到return处，从下往上分析。
可以看到这里生成的值跟上面看到的 acToken 相似，同时这里也说明了 acToken 在这里生成的。
还有一个要注意的是函数cc里面的参数b是，上图api请求返回回来的dt值。
剩下就扣代码吧，细心点就可以搞出来。
下面我们逆向参数 data，其实参数 data 本质上就是滑块轨迹的加密。
这里我们可以在上面一开始找 acToken 时发现有 data，我们在那里打上断点，然后再追栈，最后会发现在下图发现 data，再往上追，就找不到了
那我们就找一下 e ,但是 e 太多了，不好找，那我们找 data ，但是 data 也有点断，也不到找，这里我们要根据 data 的特征下手了。
我把一个data复制下来，然后序列化一下，这里我是通过 ext 找的。
最后找到一个，这里可以看到跟上面序列化得到的差不多，那我们打一下断点看看。
可以看到已经成功断到这里了，那也说明了 data 在这里生成，
上面 this.traceData 就是加密的轨迹，u 其实是个定值 50 。
这里我们搜索一下 this.traceData 。可以看到跟滑块的x和y的坐标还有时间有关。最终用f函数做了一下加密处理。我们这里不方便直接断点。因为，在此处断点，每动一下鼠标都要debug。这里我们可以通过条件断点打印一下。
Math.round(e.clientX - i) 为第一个是横坐标的拖动距离，
Math.round(e.clientY - n) 为第二个是纵坐标上下浮动的距离，
s.now() - this.beginTime 为第三个是当前滑动的时间-开始滑动的时间。
然后，剩下的就是一个扣代码了以及缺口识别了，缺口识别的话可以用ddddocr或者目前已经有很多的开源ocr来搞，反正能精准识别到距离就行。
这里给一个ddddocr的例子
import ddddocr
def get_gap(target_img:bytes, background_img:bytes):
det = ddddocr.DdddOcr(det=False, ocr=False, show_ad=False)
res = det.slide_match(target_img, background_img,simple_target=True)
print(res)
return res["target"][0]
下图是我本地生成的 data 值。
cb生成部分代码
function uuid(e, t) {
var i = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".split("")
, a = []
, n = void 0;
if (t = t || i.length,
e)
for (n = 0; n < e; n++)
a[n] = i[0 | Math.random() * t];
else {
var r = void 0;
for (a[8] = a[13] = a[18] = a[23] = "-",
a[14] = "4",
n = 0; n < 36; n++)
a[n] || (r = 0 | 16 * Math.random(),
a[n] = i[19 === n ? 3 & r | 8 : r])
}
return a.join("")
}
__toByte = function (e) {
function t(t) {
return e.apply(this, arguments)
}
return t.toString = function () {
return e.toString()
}
,
t
}(function (e) {
if (e < -128)
return __toByte(128 - (-128 - e));
if (e >= -128 && e <= 127)
return e;
if (e > 127)
return __toByte(-129 + e - 127);
throw new Error("1001")
});
n = function (e, t) {
return __toByte(e + t)
}
r = function (e, t) {
if (null == e)
return null;
if (null == t)
return e;
for (var i = [], r = t.length, o = 0, a = e.length; o < a; o++)
i[o] = n(e[o], t[o % r]);
return i
}
oo = function (e, t) {
return e = __toByte(e),
t = __toByte(t),
__toByte(e ^ t)
}
a = function (e, t) {
if (null == e || null == t || e.length != t.length)
return e;
for (var i = [], n = e.length, r = 0, a = n; r < a; r++)
i[r] = oo(e[r], t[r]);
return i
}
s = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"]
l = function (e) {
var t = [];
return t.push(s[e >>> 4 & 15]),
t.push(s[15 & e]),
t.join("")
}
u = function (e) {
var t = e.length;
if (null == e || t < 0)
return new String("");
for (var i = [], n = 0; n < t; n++)
i.push(l(e[n]));
return i.join("")
}
c = function (e) {
if (null == e || void 0 == e)
return e;
for (var t = encodeURIComponent(e), i = [], n = t.length, r = 0; r < n; r++)
if ("%" == t.charAt(r)) {
if (!(r + 2 < n))
throw new Error("1009");
i.push(f(t.charAt(++r) + "" + t.charAt(++r))[0])
} else
i.push(t.charCodeAt(r));
return i
}
j = function (e) {
var t = [];
return t[0] = e >>> 24 & 255,
t[1] = e >>> 16 & 255,
t[2] = e >>> 8 & 255,
t[3] = 255 & e,
t
}
d = function (e) {
var t = j(e);
return u(t)
}
h = function (e, t, i) {
var n = [];
if (null == e || 0 == e.length)
return n;
if (e.length < i)
throw new Error("1003");
for (var r = 0; r < i; r++)
n[r] = e[t + r];
return n
}
p = function (e, t, i, n, r) {
if (null == e || 0 == e.length)
return i;
if (null == i)
throw new Error("1004");
if (e.length < r)
throw new Error("1003");
for (var o = 0; o < r; o++)
i[n + o] = e[t + o];
return i
}
y = function (e) {
for (var t = [], i = 0; i < e; i++)
t[i] = 0;
return t
}
g = function () {
return ["i", "/", "x", "1", "X", "g", "U", "0", "z", "7", "k", "8", "N", "+", "l", "C", "p", "O", "n", "P", "r", "v", "6", "\\", "q", "u", "2", "G", "j", "9", "H", "R", "c", "w", "T", "Y", "Z", "4", "b", "f", "S", "J", "B", "h", "a", "W", "s", "t", "A", "e", "o", "M", "I", "E", "Q", "5", "m", "D", "d", "V", "F", "L", "K", "y"]
}
b = function () {
return "3"
}
m = function (e, t, i) {
var n, r, o, a = g(), s = b(), l = [];
if (1 == i)
n = e[t],
r = 0,
o = 0,
l.push(a[n >>> 2 & 63]),
l.push(a[(n << 4 & 48) + (r >>> 4 & 15)]),
l.push(s),
l.push(s);
else if (2 == i)
n = e[t],
r = e[t + 1],
o = 0,
l.push(a[n >>> 2 & 63]),
l.push(a[(n << 4 & 48) + (r >>> 4 & 15)]),
l.push(a[(r << 2 & 60) + (o >>> 6 & 3)]),
l.push(s);
else {
if (3 != i)
throw new Error("1010");
n = e[t],
r = e[t + 1],
o = e[t + 2],
l.push(a[n >>> 2 & 63]),
l.push(a[(n << 4 & 48) + (r >>> 4 & 15)]),
l.push(a[(r << 2 & 60) + (o >>> 6 & 3)]),
l.push(a[63 & o])
}
return l.join("")
}
_ = function (e) {
if (null == e || void 0 == e)
return null;
if (0 == e.length)
return "";
var t = 3;
for (var i = [], n = 0; n < e.length;) {
if (!(n + t <= e.length)) {
i.push(m(e, n, e.length - n));
break
}
i.push(m(e, n, t)),
n += t
}
return i.join("")
// try {
// for (var i = [], n = 0; n < e.length;) {
// if (!(n + t <= e.length)) {
// i.push(m(e, n, e.length - n));
// break
// }
// i.push(m(e, n, t)),
// n += t
// }
// return i.join("")
// } catch (r) {
// throw new Error("1010")
// }
}
T = [0, 1996959894, 3993919788, 2567524794, 124634137, 1886057615, 3915621685, 2657392035, 249268274, 2044508324, 3772115230, 2547177864, 162941995, 2125561021, 3887607047, 2428444049, 498536548, 1789927666, 4089016648, 2227061214, 450548861, 1843258603, 4107580753, 2211677639, 325883990, 1684777152, 4251122042, 2321926636, 335633487, 1661365465, 4195302755, 2366115317, 997073096, 1281953886, 3579855332, 2724688242, 1006888145, 1258607687, 3524101629, 2768942443, 901097722, 1119000684, 3686517206, 2898065728, 853044451, 1172266101, 3705015759, 2882616665, 651767980, 1373503546, 3369554304, 3218104598, 565507253, 1454621731, 3485111705, 3099436303, 671266974, 1594198024, 3322730930, 2970347812, 795835527, 1483230225, 3244367275, 3060149565, 1994146192, 31158534, 2563907772, 4023717930, 1907459465, 112637215, 2680153253, 3904427059, 2013776290, 251722036, 2517215374, 3775830040, 2137656763, 141376813, 2439277719, 3865271297, 1802195444, 476864866, 2238001368, 4066508878, 1812370925, 453092731, 2181625025, 4111451223, 1706088902, 314042704, 2344532202, 4240017532, 1658658271, 366619977, 2362670323, 4224994405, 1303535960, 984961486, 2747007092, 3569037538, 1256170817, 1037604311, 2765210733, 3554079995, 1131014506, 879679996, 2909243462, 3663771856, 1141124467, 855842277, 2852801631, 3708648649, 1342533948, 654459306, 3188396048, 3373015174, 1466479909, 544179635, 3110523913, 3462522015, 1591671054, 702138776, 2966460450, 3352799412, 1504918807, 783551873, 3082640443, 3233442989, 3988292384, 2596254646, 62317068, 1957810842, 3939845945, 2647816111, 81470997, 1943803523, 3814918930, 2489596804, 225274430, 2053790376, 3826175755, 2466906013, 167816743, 2097651377, 4027552580, 2265490386, 503444072, 1762050814, 4150417245, 2154129355, 426522225, 1852507879, 4275313526, 2312317920, 282753626, 1742555852, 4189708143, 2394877945, 397917763, 1622183637, 3604390888, 2714866558, 953729732, 1340076626, 3518719985, 2797360999, 1068828381, 1219638859, 3624741850, 2936675148, 906185462, 1090812512, 3747672003, 2825379669, 829329135, 1181335161, 3412177804, 3160834842, 628085408, 1382605366, 3423369109, 3138078467, 570562233, 1426400815, 3317316542, 2998733608, 733239954, 1555261956, 3268935591, 3050360625, 752459403, 1541320221, 2607071920, 3965973030, 1969922972, 40735498, 2617837225, 3943577151, 1913087877, 83908371, 2512341634, 3803740692, 2075208622, 213261112, 2463272603, 3855990285, 2094854071, 198958881, 2262029012, 4057260610, 1759359992, 534414190, 2176718541, 4139329115, 1873836001, 414664567, 2282248934, 4279200368, 1711684554, 285281116, 2405801727, 4167216745, 1634467795, 376229701, 2685067896, 3608007406, 1308918612, 956543938, 2808555105, 3495958263, 1231636301, 1047427035, 2932959818, 3654703836, 1088359270, 936918e3, 2847714899, 3736837829, 1202900863, 817233897, 3183342108, 3401237130, 1404277552, 615818150, 3134207493, 3453421203, 1423857449, 601450431, 3009837614, 3294710456, 1567103746, 711928724, 3020668471, 3272380065, 1510334235, 755167117]
S = function (e) {
var t = 4294967295;
if (null != e)
for (var i = 0; i < e.length; i++) {
var n = e[i];
t = t >>> 8 ^ T[255 & (t ^ n)]
}
return d(4294967295 ^ t, 8)
}
k = function (e) {
return S(null == e ? [] : c(e))
}
var E = [120, 85, -95, -84, 122, 38, -16, -53, -11, 16, 55, 3, 125, -29, 32, -128, -94, 77, 15, 106, -88, -100, -34, 88, 78, 105, -104, -90, -70, 90, -119, -28, -19, -47, -111, 117, -105, -62, -35, 2, -14, -32, 114, 23, -21, 25, -7, -92, 96, -103, 126, 112, -113, -65, -109, -44, 47, 48, 86, 75, 62, -26, 72, -56, -27, 66, -42, 63, 14, 92, 59, -101, 19, -33, 12, -18, -126, -50, -67, 42, 7, -60, -81, -93, -86, 40, -69, -37, 98, -63, -59, 108, 46, -45, 93, 102, 65, -79, 73, -23, -46, 37, -114, -15, 44, -54, 99, -10, 60, -96, 76, 26, 61, -107, 18, -116, -55, -40, 57, -76, -82, 45, 0, -112, -77, 29, 43, -30, 109, -91, -83, 107, 101, 81, -52, -71, 84, 36, -41, 68, 39, -75, -122, -6, 11, -80, -17, -74, -73, 35, 49, -49, -127, 80, 103, 79, -25, 52, -43, 56, 41, -61, -24, 17, -118, 115, -38, 8, -78, 33, -85, -106, 58, -98, -108, 94, 116, -125, -51, -9, 71, 82, 87, -115, 9, 69, -123, 123, -117, 113, -22, -124, -87, 64, 13, 21, -89, -2, -99, -97, 1, -4, 34, 20, 83, 119, 30, -12, -110, -66, 118, -48, 6, -36, 104, -58, -102, 97, 5, -20, 31, -72, 70, -39, 67, -68, -57, 110, 89, 51, 10, -120, 28, 111, 127, 22, -3, 54, 53, -1, 100, 74, 50, 91, 27, -31, -5, -64, 124, -121, 24, -13, 95, 121, -8, 4]
, C = 4
, R = 4
, O = 4
, $ = 4
I = function (e) {
var t = [];
if (null == e || void 0 == e || 0 == e.length)
return y(R);
if (e.length >= R)
return h(e, 0, R);
for (var i = 0; i < R; i++)
t[i] = e[i % e.length];
return t
}
X = function (e) {
if (null == e || void 0 == e || 0 == e.length)
return y(C);
var t = e.length
, i = 0;
i = t % C <= C - O ? C - t % C - O : 2 * C - t % C - O;
var n = [];
p(e, 0, n, 0, t);
for (var r = 0; r < i; r++)
n[t + r] = 0;
var o = j(t);
return p(o, 0, n, t + i, O),
n
}
x = function (e) {
if (null == e || e.length % C != 0)
throw new Error("1005");
for (var t = [], i = 0, n = e.length / C, r = 0; r < n; r++) {
t[r] = [];
for (var o = 0; o < C; o++)
t[r][o] = e[i++]
}
return t
}
A = function (e) {
var t = e >>> 4 & 15
, i = 15 & e
, n = 16 * t + i;
return E[n]
}
P = function (e) {
if (null == e)
return null;
for (var t = [], i = 0, n = e.length; i < n; i++)
t[i] = A(e[i]);
return t
}
N = function () {
for (var e = [], t = 0; t < $; t++) {
var i = 256 * Math.random();
i = Math.floor(i),
e[t] = __toByte(i)
}
return e
}
D = function (e, t) {
if (null == e)
return null;
for (var i = __toByte(t), r = [], o = e.length, a = 0; a < o; a++)
r.push(n(e[a], i));
return r
}
M = function (e, t) {
if (null == e)
return null;
for (var i = __toByte(t), n = [], r = e.length, a = 0; a < r; a++)
n.push(oo(e[a], i));
return n
}
V = function (e) {
var t = M(e, 56)
, i = D(t, -40)
, n = M(i, 103);
return n
}
L = function (e, t) {
null == e && (e = []);
var i = N();
t = I(t),
t = a(t, I(i)),
t = I(t);
var n = t
, o = X(e)
, s = x(o)
, l = [];
p(i, 0, l, 0, $);
for (var u = s.length, f = 0; f < u; f++) {
var c = V(s[f])
, j = a(c, t)
, d = r(j, n);
j = a(d, n);
var h = P(j);
h = P(h),
p(h, 0, l, f * C + $, C),
n = h
}
return l
}
B = function (e) {
var t = "14731382d816714fC59E47De5dA0C871D3F";
if (null == t || void 0 == t)
throw new Error("1008");
null != e && void 0 != e || (e = "");
var i = e + k(e)
, n = c(i)
, r = c(t)
, o = L(n, r);
return _(o)
}
function ss() {
var e = uuid(32);
return B(e)
}
function cb() {
return ss()
}
最终成品代码图
![[SQL系列] 从头开始学PostgreSQL Union Null 别名 触发器](https://csdnimg.cn/release/blog_editor_html/release2.3.5/ckeditor/plugins/CsdnLink/icons/icon-default.png?t=N6B9){kind=icon}
