Recover xDsl Router TG788vn v2 Password

[eprup]

I have found aroud the net, that with this comand on Chorme console i can enter with user XXXXXX knowing only the hash2.

Reading this there is a way to understand the correct way to decrypt the hash?

Code:

var user = "XXXXXX"; 
var hash2 = "YYYYYY";

var HA2 = MD5("GET" + ":" + uri);
document.getElementById("user").value = user;
document.getElementById("hidepw").value = MD5(hash2 + ":" + nonce +":" + "00000001" + ":" + "xyz" + ":" + qop + ":" + HA2);
document.authform.submit();