我尝试在Python中使用Chromium Cookie,因为Chromium使用AES(使用CBC)对其Cookie进行加密,我需要将其反转。
我可以从OS X的Keychain中恢复AES密钥(它存储在Base 64中):
security find-generic-password -w -a Chrome -s Chrome Safe Storage
# From Python:
python -c 'from subprocess import PIPE, Popen; print(Popen(['security', 'find-generic-password', '-w', '-a', 'Chrome', '-s', 'Chrome Safe Storage'], stdout=PIPE).stdout.read().strip())'
以下是我的代码,我所缺少的只是解密Cookie:
from subprocess import PIPE, Popen
from sqlite3 import dbapi2
def get_encryption_key():
cmd = ['security', 'find-generic-password', '-w', '-a', 'Chrome', '-s', 'Chrome Safe Storage']
return Popen(cmd, stdout=PIPE).stdout.read().strip().decode('base-64')
def get_cookies(database):
key = get_encryption_key()
with dbapi2.connect(database) as conn:
conn.rollback()
rows = conn.cursor().execute('SELECT name, encrypted_value FROM cookies WHERE host_key like ".example.com"')
cookies = {}
for name, enc_val in rows:
val = decrypt(enc_val, key) # magic missing
cookies[name] = val
return cookies
我用pyCrypto's AES module尝试了很多东西,但是:
enc_val
不是长度为16的倍数以下是一些看似有用的链接:
你能帮我搞清楚吗?
答案 0 :(得分:21)
你走在正确的轨道上!我已经为此工作了几天,终于弄明白了。 (非常感谢OP提供了有关Chromium源的有用链接。)
我已经提出了post更多细节和工作脚本,但这是基本想法:
#! /usr/bin/env python3
from Crypto.Cipher import AES
from Crypto.Protocol.KDF import PBKDF2
# Function to get rid of padding
def clean(x):
return x[:-x[-1]].decode('utf8')
# replace with your encrypted_value from sqlite3
encrypted_value = ENCRYPTED_VALUE
# Trim off the 'v10' that Chrome/ium prepends
encrypted_value = encrypted_value[3:]
# Default values used by both Chrome and Chromium in OSX and Linux
salt = b'saltysalt'
iv = b' ' * 16
length = 16
# On Mac, replace MY_PASS with your password from Keychain
# On Linux, replace MY_PASS with 'peanuts'
my_pass = MY_PASS
my_pass = my_pass.encode('utf8')
# 1003 on Mac, 1 on Linux
iterations = 1003
key = PBKDF2(my_pass, salt, length, iterations)
cipher = AES.new(key, AES.MODE_CBC, IV=iv)
decrypted = cipher.decrypt(encrypted_value)
print(clean(decrypted))
答案 1 :(得分:1)
@n8henrie's回答对我有用,但在我使用Ubuntu的环境中,Chrome不再使用'花生'作为密码,而不是它存储在gnome密钥环中。我设法使用secretstorage包来获取解密密码,如下所示:
import secretstorage
bus = secretstorage.dbus_init()
collection = secretstorage.get_default_collection(bus)
for item in collection.get_all_items():
if item.get_label() == 'Chrome Safe Storage':
MY_PASS = item.get_secret()
break
else:
raise Exception('Chrome password not found!')