works

import pycurl
from StringIO import StringIO
import re
from urllib import urlencode
import requests
from lxml import html
import cookielib

params = {}

HEADERS = [
'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
'Content-Type: application/x-www-form-urlencoded',
'User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.86 Safari/537.36'
]

login = 'login'
password = 'pass'

def curl_post(url=None, params=None):

    storage = StringIO()

    ch = pycurl.Curl()

    ch.setopt(ch.URL,  url)

    ch.setopt(ch.HEADER, 1)
    ch.setopt(ch.CONNECTTIMEOUT, 30)

    ch.setopt(ch.WRITEFUNCTION, storage.write)

    if params is not None:
        if params.get('params'):
            ch.setopt(ch.POST, 1)
            ch.setopt(ch.POSTFIELDS, params['params'])

        if params.get('headers'):
            ch.setopt(ch.HTTPHEADER, params['headers'])

        if params.get('cookies'):
            ch.setopt(ch.COOKIE, params['cookies'])

    ch.perform()
    ch.close()

    result = storage.getvalue()

    headers, content = result.split('\r\n\r\n')

    cookies_list = re.findall(r'Set-Cookie: (.*);', headers, re.MULTILINE)
    cookies = ';'.join([c.split(';')[0] for c in cookies_list])

    with open('test.cookies', 'w') as cookies_file:
        cookies_file.write(cookies)

    return {'headers': headers, 'cookies': cookies, 'content': content}

init_get = curl_post('https://vk.com', {'headers': HEADERS})

tree = html.fromstring(init_get['content'])
ip_h = tree.xpath("//form[@id='quick_login_form']/input[@name='ip_h']")[0].value
lg_h = tree.xpath("//form[@id='quick_login_form']/input[@name='lg_h']")[0].value

post_params = 'act=login&role=al_frame&%s&%s&%s&%s&%s' % (urlencode({'_origin': 'http://vk.com'}),
                                                          urlencode({'ip_h': ip_h}),
                                                          urlencode({'lg_h': lg_h}),
                                                          urlencode({'email': login}),
                                                          urlencode({'pass': password}))

auth_post = curl_post('https://login.vk.com/?act=login', {'headers': HEADERS,
                                                          'params': post_params,
                                                          'cookies': init_get['cookies']})

location = re.search(r'Location: (.*)', auth_post['headers'])
if not location:
    print 'Can not auth'
    exit(1)

authed = curl_post(location.group(1), {'headers': HEADERS,
                                       'cookies': init_get['cookies']})

remixsid = re.search(r'remixsid=\w*;', authed['cookies'])
remixsid = remixsid.group()[:-1]

im = curl_post('https://vk.com/im', {'headers': HEADERS,
                                'cookies': remixsid})

with open('vk.html', 'w') as vk_file:
    vk_file.write(im['content'])