w4E3gefT

1<?php
2
3$block_size = AES.block_size;
4$unpad = lambda $s : $s[0:-ord($s[-1]);
5
6$lg_deckey = "wleldpadptmdkdnt";
7$lg_enckey = "qlxnTldlsvntzl!#";
8
9function pad($plain_text) {
10    /*
11    func to pad cleartext to be multiples of 8-byte blocks.
12    If you want to encrypt a text message that is not multiples of 8-byte blocks, 
13    the text message must be padded with additional bytes to make the text message to be multiples of 8-byte blocks.
14    */
15    $number_of_bytes_to_pad = $block_size - len($plain_text) % $block_size;
16    $ascii_string = chr($number_of_bytes_to_pad);
17    $padding_str = $number_of_bytes_to_pad * $ascii_string;
18    $padded_plain_text =  $plain_text + $padding_str;
19    return $padded_plain_text;
20}
21
22function lg_encrypt($string) {
23    $key = $lg_enckey;
24    $plain = pad($string);
25    $iv = str("\x00"*AES.$block_size);
26    $cipher = AES.new($key, AES.MODE_CBC, $iv);
27    $encrypted_text = cipher.encrypt($plain);
28    return base64.b64encode($encrypted_text).replace("+", "m").replace("/", "f");
29}
30
31function lg_decrypt($string) {
32    if (len($string) == 0 or $string == "\n") {
33        return ""
34    }
35
36    $key = $lg_deckey;
37    $crypted = base64.b64decode($string);
38    $iv = str("\x00"*AES.$block_size);
39    $cipher = AES.new($key, AES.MODE_ECB);
40    $decrypted_text = cipher.decrypt($crypted);
41    return unpad($decrypted_text);
42}
43$imei = "lol";
44
45$esn = lg_encrypt($imei);
46$data = "{'esn':esn}"; #JSON que vem da API
47# Faz um post na $url da API 
48$r = requests.post($url = "https://csmg.lgmobile.com:49002/csmg/nb2c/gn_auth_model_check2.jsp", data = data);
49
50function xml_recurse($node) { 
51    $dec = lg_decrypt($node.text);
52    if ($node.tag == "sw_url") {
53        # pega o final da API de baixo
54        $dec = "http://tool.lime.gdms.lge.com/dn/downloader.dev?" + dec.split("?")[1];
55    }
56
57    print ("$node.tag, $node.attrib, $dec");
58    for $child in $node () { 
59        xml_recurse(child);
60    }
61}
62$root = $ET.fromstring($r.text);
63xml_recurse($root);