[Upgrading, Modifying and Unlocking] innovativesahil:
Web developers help required

Hey guys PLEASE HELP

Below is the Javascript in the page 192.168.1.1/to_engineer_login.html

What I can figure out of it is that the password is first given to function hex_md5 then a substring is taken from its result. The new obtained value is given to function transalte_key() . The result obtained is then posted to a page at 192.168.1.1/wxml/eng_login.xml . In the XML file there is a single line

<eng>login_engineer_check(password)</eng>

Since i am not an expert web developer I need some help. How can we know what is happening inside the function called in the xml file. Also I want to know if can somehow call this function and get the result for analyzing.

Please share this to as many developers you know

//if(window==top) top.location.href="index.htm";
//if(top.location.href.indexOf("to_engineer_login.html")>-1) top.location.href="index.htm";
var Min_PWD_Ln = 8;
var Max_PWD_Ln = 15;
var timeout_update;

function update_lang_rand() {
$.ajax({
url: 'mark_lang.w.xml',
type: "Get",
timeout: 8000,
cache: false,
datatype: "xml",
// data: { path:curr_path,page:curr_page,filter:'255' },
success: function(data, status) {
lang = $(data).find("lang").text();
rand = $(data).find("rand").text();
// if(lang=='id') $('#show_lang').html('IND');
// else $('#show_lang').html('ENG');
},
error: function(x, t, m) {
if(t === "timeout") {

}
}
})
}

//MD5
var hexcase = 0;
var b64pad = "";
var chrsz = 8;

function hex_md5(s) {
return binl2hex(core_md5(str2binl(s), s.length * chrsz));
}

function b64_md5(s) {
return binl2b64(core_md5(str2binl(s), s.length * chrsz));
}

function str_md5(s) {
return binl2str(core_md5(str2binl(s), s.length * chrsz));
}

function hex_hmac_md5(key, data) {
return binl2hex(core_hmac_md5(key, data));
}

function b64_hmac_md5(key, data) {
return binl2b64(core_hmac_md5(key, data));
}

function str_hmac_md5(key, data) {
return binl2str(core_hmac_md5(key, data));
}

function md5_vm_test() {
return hex_md5("abc") == "900150983cd24fb0d6963f7d28e17f72";
}

function core_md5(x, len) {
x[len >> 5] |= 0x80 << ((len) % 32);
x[(((len + 64) >>> 9) << 4) + 14] = len;

var a = 1732584193;
var b = -271733879;
var c = -1732584194;
var d = 271733878;

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

a = md5_ff(a, b, c, d, x[i + 0], 7, -680876936);
d = md5_ff(d, a, b, c, x[i + 1], 12, -389564586);
c = md5_ff(c, d, a, b, x[i + 2], 17, 606105819);
b = md5_ff(b, c, d, a, x[i + 3], 22, -1044525330);
a = md5_ff(a, b, c, d, x[i + 4], 7, -176418897);
d = md5_ff(d, a, b, c, x[i + 5], 12, 1200080426);
c = md5_ff(c, d, a, b, x[i + 6], 17, -1473231341);
b = md5_ff(b, c, d, a, x[i + 7], 22, -45705983);
a = md5_ff(a, b, c, d, x[i + 8], 7, 1770035416);
d = md5_ff(d, a, b, c, x[i + 9], 12, -1958414417);
c = md5_ff(c, d, a, b, x[i + 10], 17, -42063);
b = md5_ff(b, c, d, a, x[i + 11], 22, -1990404162);
a = md5_ff(a, b, c, d, x[i + 12], 7, 1804603682);
d = md5_ff(d, a, b, c, x[i + 13], 12, -40341101);
c = md5_ff(c, d, a, b, x[i + 14], 17, -1502002290);
b = md5_ff(b, c, d, a, x[i + 15], 22, 1236535329);

a = md5_gg(a, b, c, d, x[i + 1], 5, -165796510);
d = md5_gg(d, a, b, c, x[i + 6], 9, -1069501632);
c = md5_gg(c, d, a, b, x[i + 11], 14, 643717713);
b = md5_gg(b, c, d, a, x[i + 0], 20, -373897302);
a = md5_gg(a, b, c, d, x[i + 5], 5, -701558691);
d = md5_gg(d, a, b, c, x[i + 10], 9, 38016083);
c = md5_gg(c, d, a, b, x[i + 15], 14, -660478335);
b = md5_gg(b, c, d, a, x[i + 4], 20, -405537848);
a = md5_gg(a, b, c, d, x[i + 9], 5, 568446438);
d = md5_gg(d, a, b, c, x[i + 14], 9, -1019803690);
c = md5_gg(c, d, a, b, x[i + 3], 14, -187363961);
b = md5_gg(b, c, d, a, x[i + 8], 20, 1163531501);
a = md5_gg(a, b, c, d, x[i + 13], 5, -1444681467);
d = md5_gg(d, a, b, c, x[i + 2], 9, -51403784);
c = md5_gg(c, d, a, b, x[i + 7], 14, 1735328473);
b = md5_gg(b, c, d, a, x[i + 12], 20, -1926607734);

a = md5_hh(a, b, c, d, x[i + 5], 4, -378558);
d = md5_hh(d, a, b, c, x[i + 8], 11, -2022574463);
c = md5_hh(c, d, a, b, x[i + 11], 16, 1839030562);
b = md5_hh(b, c, d, a, x[i + 14], 23, -35309556);
a = md5_hh(a, b, c, d, x[i + 1], 4, -1530992060);
d = md5_hh(d, a, b, c, x[i + 4], 11, 1272893353);
c = md5_hh(c, d, a, b, x[i + 7], 16, -155497632);
b = md5_hh(b, c, d, a, x[i + 10], 23, -1094730640);
a = md5_hh(a, b, c, d, x[i + 13], 4, 681279174);
d = md5_hh(d, a, b, c, x[i + 0], 11, -358537222);
c = md5_hh(c, d, a, b, x[i + 3], 16, -722521979);
b = md5_hh(b, c, d, a, x[i + 6], 23, 76029189);
a = md5_hh(a, b, c, d, x[i + 9], 4, -640364487);
d = md5_hh(d, a, b, c, x[i + 12], 11, -421815835);
c = md5_hh(c, d, a, b, x[i + 15], 16, 530742520);
b = md5_hh(b, c, d, a, x[i + 2], 23, -995338651);

a = md5_ii(a, b, c, d, x[i + 0], 6, -198630844);
d = md5_ii(d, a, b, c, x[i + 7], 10, 1126891415);
c = md5_ii(c, d, a, b, x[i + 14], 15, -1416354905);
b = md5_ii(b, c, d, a, x[i + 5], 21, -57434055);
a = md5_ii(a, b, c, d, x[i + 12], 6, 1700485571);
d = md5_ii(d, a, b, c, x[i + 3], 10, -1894986606);
c = md5_ii(c, d, a, b, x[i + 10], 15, -1051523);
b = md5_ii(b, c, d, a, x[i + 1], 21, -2054922799);
a = md5_ii(a, b, c, d, x[i + 8], 6, 1873313359);
d = md5_ii(d, a, b, c, x[i + 15], 10, -30611744);
c = md5_ii(c, d, a, b, x[i + 6], 15, -1560198380);
b = md5_ii(b, c, d, a, x[i + 13], 21, 1309151649);
a = md5_ii(a, b, c, d, x[i + 4], 6, -145523070);
d = md5_ii(d, a, b, c, x[i + 11], 10, -1120210379);
c = md5_ii(c, d, a, b, x[i + 2], 15, 718787259);
b = md5_ii(b, c, d, a, x[i + 9], 21, -343485551);

a = safe_add(a, olda);
b = safe_add(b, oldb);
c = safe_add(c, oldc);
d = safe_add(d, oldd);
}
return Array(a, b, c, d);
}

function md5_cmn(q, a, b, x, s, t) {
return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b);
}

function md5_ff(a, b, c, d, x, s, t) {
return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
}

function md5_gg(a, b, c, d, x, s, t) {
return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
}

function md5_hh(a, b, c, d, x, s, t) {
return md5_cmn(b ^ c ^ d, a, b, x, s, t);
}

function md5_ii(a, b, c, d, x, s, t) {
return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
}

function core_hmac_md5(key, data) {
var bkey = str2binl(key);
if(bkey.length > 16) bkey = core_md5(bkey, key.length * chrsz);

var ipad = Array(16),
opad = Array(16);
for(var i = 0; i < 16; i++) {
ipad[i] = bkey[i] ^ 0x36363636;
opad[i] = bkey[i] ^ 0x5C5C5C5C;
}

var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * chrsz);
return core_md5(opad.concat(hash), 512 + 128);
}

function safe_add(x, y) {
var lsw = (x & 0xFFFF) + (y & 0xFFFF);
var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
return(msw << 16) | (lsw & 0xFFFF);
}

function bit_rol(num, cnt) {
return(num << cnt) | (num >>> (32 - cnt));
}

function transalte_key(key) {
var result = "";
//	for(var i in key) {
for(var i=0;i<key.length;i++){
var n = parseInt(key[i], 16);
if(n >= 0 && n < 16) result += keyss[n];
else result += keyss[15];
}
return result;
}

function str2binl(str) {
var bin = Array();
var mask = (1 << chrsz) - 1;
for(var i = 0; i < str.length * chrsz; i += chrsz)
bin[i >> 5] |= (str.charCodeAt(i / chrsz) & mask) << (i % 32);
return bin;
}

function binl2str(bin) {
var str = "";
var mask = (1 << chrsz) - 1;
for(var i = 0; i < bin.length * 32; i += chrsz)
str += String.fromCharCode((bin[i >> 5] >>> (i % 32)) & mask);
return str;
}

function binl2hex(binarray) {
var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
var str = "";
for(var i = 0; i < binarray.length * 4; i++) {
str += hex_tab.charAt((binarray[i >> 2] >> ((i % 4) * 8 + 4)) & 0xF) +
hex_tab.charAt((binarray[i >> 2] >> ((i % 4) * 8)) & 0xF);
}
return str;
}

var keyss = "3@S35F@JmTQt9S#I";

/*
* Convert an array of little-endian words to a base-64 string
*/
function binl2b64(binarray) {
var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var str = "";
for(var i = 0; i < binarray.length * 4; i += 3) {
var triplet = (((binarray[i >> 2] >> 8 * (i % 4)) & 0xFF) << 16) |
(((binarray[i + 1 >> 2] >> 8 * ((i + 1) % 4)) & 0xFF) << 8) |
((binarray[i + 2 >> 2] >> 8 * ((i + 2) % 4)) & 0xFF);
for(var j = 0; j < 4; j++) {
if(i * 8 + j * 6 > binarray.length * 32) str += b64pad;
else str += tab.charAt((triplet >> 6 * (3 - j)) & 0x3F);
}
}
return str;
}

$(document).ready(function() {
//	hide_menu();
$("#LOGIN_PWD").focus();
//	disable_button();

$("#BTN_Login").die().live('click', function() {
var ori_key = hex_md5($("#LOGIN_PWD").val());
ori_key = ori_key.substr(5, 17);

var password = transalte_key(ori_key);

//	password=hex_md5("6ff89c");
var headers = {};
headers["__RequestVerificationToken"] = $("#csrf_token2").val();
$.ajax({
url: '/wxml/eng_login.xml',
type: "Post",
headers: headers,
timeout: 8000,
cache: false,
datatype: "xml",
data: {
password: password
},
success: function(data, status) {
var new_token = $(data).find("token").text();
if(new_token == "-1") {
top.location.reload(true);
return false;
}
$("#csrf_token2").val(new_token);
$('input[type="button"], button').attr("disabled", false);
var result = parseInt($(data).find("eng").text());

if(result == 0) $('#error_info').html("password error");
else top.location.href = 'index.htm';
return true;

},
error: function(x, t, m) {
if(t === "timeout") {

}
}
})
})

});

$(document).keyup(function(e){
var keyCode;
var e = e || event;
if(window.event) {
keyCode = window.event.keyCode;
} else if(e) {
keyCode = e.which;
} else keyCode = e.keyCode;

if (e.ctrlKey || e.altKey)// Exclude key press "CRTL+key" & "ALT+key"
{
return;
}

if (13 == keyCode && ( $("#LOGIN_PWD").length) )// Enter key
{
$('#BTN_Login').trigger('click');
}
})

function ID_PW_keydown(e) /* AMO5510.knkim.20140214.add */ {
var keyCode;
var e = e || event;
if(window.event) {
keyCode = window.event.keyCode;
} else if(e) {
keyCode = e.which;
} else keyCode = e.keyCode;

/*console.log("keyCode" + keyCode );*/

if(keyCode == 13) { /* if EnterKey */
$('input[type="button"], button').attr("disabled", true); /* 20150708-ghjggm after click diabled button */
login_submit();
}
}