授人以鱼，不如授人以渔，今天就分享一个 分析qq加密的过程。
工具：谷歌浏览器自带的的调试工具（在浏览器中按F12呼出）
以下是全过程，历时4个的小时。
提交的时候调用 onFormSubmit
#!js
function onFormSubmit(form)
{
if (form.remember_uin.checked){
return ptui_onLoginEx(form, "qq.com")
}else{
var myDate=new Date();
myDate.setFullYear(1971,1,1);
pt.cookie.set("ptui_loginuin", "", myDate, '/', 'ui.ptlogin2.qq.com');
return ptui_onLogin(form);
}
}
如果用户没有勾选保存密码调用 ptui_onLogin
#!js
function ptui_onLogin(A) {
try {
if (parent.ptlogin2_onLogin) {
if (!parent.ptlogin2_onLogin()) {
return false
}
}
if (parent.ptlogin2_onLoginEx) {
var D = A.u.value;
var B = A.verifycode.value;
if (str_uintip == D) {
D = ""
}
if (!parent.ptlogin2_onLoginEx(D, B)) {
return false
}
}
} catch(C) {}
return ptui_checkValidate(A)
}
接下来调用 ptui_checkValidate(A)
#!js
function ptui_checkValidate(B) {
var A = B.u; //此处获取用户名
var D = B.p; //此处获取密码
var E = B.verifycode; //此处获取验证码
if (A.value == "" || str_uintip == A.value) {
pt.show_err(str_no_uin);
A.focus();
return false
}
A.value = A.value.trim();
if (!pt.chkUin(A.value)) {
pt.show_err(str_inv_uin);
A.focus();
A.select();
return false
}
if (D.value == "") {
pt.show_err(str_no_pwd);
D.focus();
return false
}
if (E.value == "") {
if (!isLoadVC) {
loadVC(true);
g_submitting = true;
return false
}
pt.show_err(str_no_vcode);
try {
E.focus()
} catch(C) {}
if (!g_loadcheck) {
ptui_reportAttr(78028)
} else {
ptui_reportAttr(78029)
}
return false
}
if (E.value.length < 4) {
pt.show_err(str_inv_vcode);
E.focus();
E.select();
return false
}
if (isLoadVC && !(/^[a-zA-Z0-9]+$/.test(E.value))) {
pt.show_err(str_correct_vcode);
E.focus();
E.select();
return false
}
D.setAttribute("maxlength", "32");
ajax_Submit();
ptui_reportNum(g_changeNum);
g_changeNum = 0;
return true
}
然后：
#!js
function ajax_Submit() {
if (pt.checkRet == -1 || pt.checkRet == 3) {
pt.show_err(pt.checkErr[window.g_lang]);
try {
$("p").focus()
} catch(B) {}
return
}
var A = getSubmitUrl("login");
pt.winName.set("login_param", encodeURIComponent(login_param));
pt.loadScript(A);
return
}
最后在这个函数中加密组装提交地址：
#!js
function getSubmitUrl(K) {
var E = true;
var C = document.forms[0];
var A = (pt.isHttps ? "https://ssl.": "http://") + "ptlogin2." + g_domain + "/" + K + "?";
var B = document.getElementById("login2qq");
if (pt.regmaster == 2) {
A = "http://ptlogin2.function.qq.com/" + K + "?regmaster=2&"
} else {
if (pt.regmaster == 3) {
A = "http://ptlogin2.crm2.qq.com/" + K + "?regmaster=3&"
}
}
for (var J = 0; J < C.length; J++) {
if (K == "ptqrlogin" && (C[J].name == "u" || C[J].name
== "p" || C[J].name == "verifycode" || C[J].name == "h")) {
continue
}
if (C[J].name == "ipFlag" && !C[J].checked) {
A += C[J].name + "=-1&";
continue
}
if (C[J].name == "fp" || C[J].type == "submit") {
continue
}
if (C[J].name == "ptredirect") {
g_ptredirect = C[J].value
}
if (C[J].name == "low_login_enable" && (!C[J].checked)) {
E = false;
continue
}
if (C[J].name == "low_login_hour" && (!E)) {
continue
}
if (C[J].name == "webqq_type" && !B && (!C[J].checked)) {
continue
}
A += C[J].name;
A += "=";
if (C[J].name == "u" && pt.needAt) {
A += pt.needAt + "&";
continue
}
if (C[J].name == "p") {
var M = C.p.value;
var I = hexchar2bin(md5(M));
var H = md5(I + pt.uin);
var G = md5(H + C.verifycode.value.toUpperCase());
A += G
} else {
if (C[J].name == "u1" || C[J].name == "ep") {
var D = C[J].value;
var L = "";
if (g_appid == "1003903" && B) {
L = //?/g.test(D) ? "&": "?";
var F = document.getElementById("webqq_type").value;
L += "login2qq=" + B.value + "&webqq_type=" + F
}
A += encodeURIComponent(D + L)
} else {
A += C[J].value
}
}
A += "&"
}
A += "fp=loginerroralert&action=" + pt.action.join("-") + "-" +
(new Date() - g_begTime) + "&mibao_css=" + pt.mibao_css + "&t=" +
pt.submitN[pt.uin] + "&g=1";
A += "&js_type=" + pt.js_type + "&js_ver=" + window.g_pt_version + "&login_sig=" + window.g_login_sig;
return A
}
核心的加密代码如下：
#!js
if (C[J].name == "p") {
var M = C.p.value;
var I = hexchar2bin(md5(M));
var H = md5(I + pt.uin); //pt.uin 估计是用户qq号的16进制表示
var G = md5(H + C.verifycode.value.toUpperCase());
A += G
var M = "××××××";var ver="!";var I = hexchar2bin(md5(M));var H = md5(I + pt.uin);var G = md5(H + ver.toUpperCase());
hexchar2bin算法如下：
#!js
function hexchar2bin(str) {
var arr = [];
for (var i = 0; i < str.length; i = i + 2) {
arr.push("//x" + str.substr(i, 2))
}
arr = arr.join("");
eval("var temp = '" + arr + "'");
return temp
}
最终加密过程如下：
#!js
md5(md5(hexchar2bin(md5(pwd))+uin)+verifycode.toUpperCase())
#!js
md5(md5(hexchar2bin(md5("××××××××"))+'/x00/x00/x00/x00/x01/xd3/xff/xf3')+"!EHZ")
"918AAFDF8C9481F7AC2FC1C89A4DED7B"
此处改变了 pt.uin:
#!js
function ptui_checkVC(A, C, B) {
clearTimeout(checkClock);
pt.checkRet = A;
pt.uin = B;
if (A == "2") {
g_uin = "0";
pt.show_err(str_inv_uin)
}
if (!pt.submitN[B]) {
pt.submitN[B] = 1
}
var E = new Date();
g_time.time7 = E;
var D = {
"12": g_time.time7 - g_time.time6
};
if (!curXui) {
ptui_speedReport(D)
}
g_loadcheck = false;
switch (A + "") {
case "0":
case "2":
case "3":
$("verifycode").value = C || "abcd";
loadVC(false);
break;
case "1":
$("verifycode").value = pt.needCodeTip ? str_codetip: "";
loadVC(true);
break;
default:
break
}
}
其实找出这个算法花的时间很少，只是一直找不到 ptui_checkVC 调用的地方，后来恍然大悟，在验证qq是否需要图片验证码的时候返回的就是给js调用的，地址是：
https://ssl.ptlogin2.qq.com/chec ... 5Q4YxDJ8Rza4-1ubGMR*aruR6Byct1dQ&u1=http%3A%2F%2Fweb2.qq.com%2Floginproxy.html&r=0.5011255156714469
返回内容如下：
#!js
ptui_checkVC('0','!BGC','/x00/x00/x00/x00/x01/xd3/xff/xf3');
第三个参数就是 16进制表示的qq号码
至此全搞定，剩下的就是编程实现。https方式访问。可以试试 libcurl 或者自己 用openssl+socket也可以
原创文章，作者：Maggie-Hunter，如若转载，请注明出处：https://blog.ytso.com/tech/aiops/57307.html