Obfuscated phishing sites are nothing new. Various techniques such as JavaScript encryption tools (which offer very primitive obfuscation), data URIs (where the page content is mostly Base64-encoded), and character escaping are often used. However, recently we have seen a phishing site using the Advanced Encryption Standard (AES).
more here..........http://www.symantec.com/connect/blogs/fresh-phish-served-helping-aes
more here..........http://www.symantec.com/connect/blogs/fresh-phish-served-helping-aes