Even better login info. Verified and works

import pkcs1, rsa
import math, json, urllib, httplib, random
import base64

params = urllib.urlencode({'username': 'hlsdk5'})
headers = {"Content-type": "application/x-www-form-urlencoded", \
           "User-Agent": "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0) Gecko/20100101 Firefox/12.0"}

conn = httplib.HTTPSConnection("steamcommunity.com");
conn.request("POST", "/login/getrsakey/", params, headers);

response = conn.getresponse();
publicKeyJSON = json.loads(response.read());

steamPublicRSAKey = pkcs1.keys.RsaPublicKey(int(publicKeyJSON["publickey_mod"], 16), int(publicKeyJSON["publickey_exp"], 16));
pK = rsa.PublicKey(int(publicKeyJSON["publickey_mod"], 16), int(publicKeyJSON["publickey_exp"], 16));

encryptedPassword = base64.encodestring(rsa.encrypt('aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa', pK))

params = urllib.urlencode({                                              \
                            'redir': 'http://steamcommunity.com/actions/RedirectToHome',
                            'password': encryptedPassword,               \
                            'username': 'hlsdk5',                        \
                            'emailauth': 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',                           \
                            'captcha_text': '',                        \
                            'emailsteamid': 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',                        \
                            'rsatimestamp': publicKeyJSON["timestamp"]   \
                           })
headers = {"Content-type": "application/x-www-form-urlencoded"}
conn = httplib.HTTPSConnection("steamcommunity.com");
conn.request("POST", "/login/dologin/", params, headers);
response = conn.getresponse();
ans = response.getheaders();