获取key基址偏移可以根据微信文件夹获取，不需要输入key

Program/get_base_addr.py

@@ -7,25 +7,47 @@
 # -------------------------------------------------------------------------------
 import argparse
 import ctypes
+import hashlib
 import json
+import multiprocessing
+import os
 import re
 import time
+import winreg
+import threading
 
 import psutil
 import win32api
 from pymem import Pymem
 import pymem
+import hmac
 
 ReadProcessMemory = ctypes.windll.kernel32.ReadProcessMemory
 void_p = ctypes.c_void_p
+KEY_SIZE = 32
+DEFAULT_PAGESIZE = 4096
+DEFAULT_ITER = 64000
+
+
+def validate_key(key, salt, first, mac_salt):
+    byteKey = hashlib.pbkdf2_hmac("sha1", key, salt, DEFAULT_ITER, KEY_SIZE)
+    mac_key = hashlib.pbkdf2_hmac("sha1", byteKey, mac_salt, 2, KEY_SIZE)
+    hash_mac = hmac.new(mac_key, first[:-32], hashlib.sha1)
+    hash_mac.update(b'\x01\x00\x00\x00')
+
+    if hash_mac.digest() == first[-32:-12]:
+        return True
+    else:
+        return False
 
 
 class BaseAddr:
-    def __init__(self, account, mobile, name, key):
+    def __init__(self, account, mobile, name, key, db_path):
         self.account = account.encode("utf-8")
         self.mobile = mobile.encode("utf-8")
         self.name = name.encode("utf-8")
-        self.key = bytes.fromhex(key)
+        self.key = bytes.fromhex(key) if key else b""
+        self.db_path = db_path if db_path else ""
 
         self.process_name = "WeChat.exe"
         self.module_name = "WeChatWin.dll"
@@ -66,22 +88,20 @@ class BaseAddr:
         pid = self.pm.process_id
         # print(self.pm.process_base.lpBaseOfDll, self.pm.process_base.SizeOfImage)
 
-        batch = 4096
-
         module_start_addr = 34199871460642
         module_end_addr = 0
-        for process in psutil.process_iter(['name', 'exe', 'pid', 'cmdline']):
+        process = psutil.Process(pid)
-            if process.name() == self.process_name:
+        for module in process.memory_maps(grouped=False):
-                for module in process.memory_maps(grouped=False):
+            if "WeChat" in module.path:
-                    if "WeChat" in module.path:
+                start_addr = int(module.addr, 16)
-                        start_addr = int(module.addr, 16)
+                end_addr = start_addr + module.rss
-                        end_addr = start_addr + module.rss
 
-                        if module_start_addr > start_addr:
+                if module_start_addr > start_addr:
-                            module_start_addr = start_addr
+                    module_start_addr = start_addr
-                        if module_end_addr < end_addr:
+                if module_end_addr < end_addr:
-                            module_end_addr = end_addr
+                    module_end_addr = end_addr
 
+        batch = 4096
         Handle = ctypes.windll.kernel32.OpenProcess(0x1F0FFF, False, pid)
         array = ctypes.create_string_buffer(batch)
         key_addr = 0
@@ -93,19 +113,91 @@ class BaseAddr:
             if len(key_addr) > 0:
                 key_addr = key_addr[0]
                 break
-        # print(key_addr)
+
+        # print(hex(key_addr))
         key = key_addr.to_bytes(8, byteorder='little')
+        # print(key.hex())
         result = self.search_memory_value(key, self.module_name)
         return result
 
+    def get_key_bias(self, wx_db_path):
+        wx_db_path = os.path.join(wx_db_path, "Msg", "MicroMsg.db")
+        if not os.path.exists(wx_db_path):
+            return False
+
+        module_name = "WeChatWin.dll"
+        pm = self.pm
+        module = pymem.process.module_from_name(pm.process_handle, module_name)
+        start_addr = module.lpBaseOfDll
+        size = module.SizeOfImage
+        mem_data = pm.read_bytes(start_addr, size)
+
+        min_addr = 0xffffffffffffffffffffffff
+        max_addr = 0
+        for module1 in pm.list_modules():
+            if module1.lpBaseOfDll < min_addr:
+                min_addr = module1.lpBaseOfDll
+            if module1.lpBaseOfDll > max_addr:
+                max_addr = module1.lpBaseOfDll
+
+        def read_key(addr):
+            key = ctypes.create_string_buffer(35)
+            if ReadProcessMemory(pm.process_handle, void_p(addr - 1), key, 35, 0) == 0:
+                return b""
+
+            if b"\x00\x00" in key.raw[1:33]:
+                return b""
+
+            if b"\x00\x00" == key.raw[33:35] and b"\x90" == key.raw[0:1]:
+                return key.raw[1:33]
+            return b""
+
+        def get_maybe_key(mem_data):
+            maybe_key = []
+            for i in range(0, len(mem_data), 8):
+                addr = mem_data[i:i + 8]
+                addr = int.from_bytes(addr, byteorder='little')
+                # 去掉不可能的地址
+                if min_addr < addr < max_addr:
+                    key = read_key(addr)
+                    if key == b"":
+                        continue
+                    maybe_key.append([key, i])
+            return maybe_key
+
+        def verify_key(keys, wx_db_path):
+
+            with open(wx_db_path, "rb") as file:
+                blist = file.read(5000)
+            salt = blist[:16]
+            first = blist[16:DEFAULT_PAGESIZE]
+            mac_salt = bytes([(salt[i] ^ 58) for i in range(16)])
+
+            with multiprocessing.Pool(processes=8) as pool:
+                results = [pool.apply_async(validate_key, args=(key, salt, first, mac_salt)) for key, i in keys[-1::-1]]
+                results = [p.get() for p in results]
+                for i, result in enumerate(results[-1::-1]):
+                    if result:
+                        return keys[i]
+                return b"", 0
+
+        maybe_key = get_maybe_key(mem_data)
+        key, bais = verify_key(maybe_key, wx_db_path)
+        return bais
+
     def run(self):
         self.version = self.get_file_version(self.process_name)
         if not self.islogin:
             return "[-] WeChat No Run"
-        key_bias = self.search_key(self.key)
         mobile_bias = self.search_memory_value(self.mobile)
         name_bias = self.search_memory_value(self.name)
         account_bias = self.search_memory_value(self.account)
+        if self.key:
+            key_bias = self.search_key(self.key)
+        elif self.db_path:
+            key_bias = self.get_key_bias(self.db_path)
+        else:
+            key_bias = 0
         return {self.version: [name_bias, account_bias, mobile_bias, 0, key_bias]}
 
 
@@ -116,24 +208,25 @@ if __name__ == '__main__':
     parser.add_argument("--name", type=str, help="微信昵称")
     parser.add_argument("--account", type=str, help="微信账号")
     parser.add_argument("--key", type=str, help="密钥")
+    parser.add_argument("--db_path", type=str, help="加密数据库路径(登录的微信文件夹路径)")
 
     # 解析命令行参数
     args = parser.parse_args()
 
     # 检查是否缺少必要参数，并抛出错误
-    if not args.mobile or not args.name or not args.account or not args.key:
+    if not args.mobile or not args.name or not args.account:
-        raise ValueError("缺少必要的命令行参数！请提供手机号、微信昵称、微信账号和密钥。")
+        raise ValueError("缺少必要的命令行参数！请提供手机号、微信昵称、微信账号。")
-
+    if not args.key and not args.db_path:
+        raise ValueError("缺少必要的命令行参数！请提供密钥或加密数据库路径。")
     # 从命令行参数获取值
     mobile = args.mobile
     name = args.name
     account = args.account
     key = args.key
+    db_path = args.db_path
 
     # 调用 run 函数，并传入参数
-    # rdata = run(mobile, name, account, key)
+    rdata = BaseAddr(account, mobile, name, key, db_path).run()
-    # print(rdata)
-    rdata = BaseAddr(account, mobile, name, key).run()
 
     print(rdata)
 

README.md

@@ -1,6 +1,7 @@
 # <center>PyWxDump</center>
 
 * 更新日志（如果有[version_list.json](./Program/version_list.json)缺少的版本，请帮忙添加。）
+    * 2023.10.09 获取key基址偏移可以根据微信文件夹获取，不需要输入key
     * 2023.10.09 优化代码，删减没必要代码，重新修改获取基址代码，加快运行速度（需要安装新的库 pymem）
     * 2023.10.07 修改获取基址内存搜索方式，防止进入死循环
     * 2023.10.07 增加了3.9.7.29版本的偏移地址
@@ -113,7 +114,10 @@ print(data)
 **3.1 通过python脚本获取**
 
 ```shell
-python get_base_addr.py  --mobile 152******** --name ****** --account ****** --key **********************************************
+python get_base_addr.py  --mobile 152***** --name **** --account *** --key ********** --db_path  "****\WeChat Files\wxid_******"
+```
+
+# mobile、name、account为必填参数, key、db_path二者必填其一，使用key时，执行速度快，db_path时，执行速度慢（大约需要10s-60s，也可能更长）
 
 # return：{'3.9.7.29': [63486984, 63488320, 63486792, 0, 63488256]}
 # (十进制)按顺序代表：微信昵称、微信账号、微信手机号、微信邮箱（默认0）、微信KEY