e64006bafe
A CLI tool to query local WeChat data with 11 commands: sessions, history, search, contacts, members, stats, export, favorites, unread, new-messages, and init. Features: - Self-contained init with key extraction (no external deps) - On-the-fly SQLCipher decryption with caching - JSON output by default for LLM/AI tool integration - Message type filtering and chat statistics - Markdown/txt export for conversations - Cross-platform: macOS, Windows, Linux
115 lines
3.6 KiB
Python
115 lines
3.6 KiB
Python
"""macOS 密钥提取 — 通过 C 二进制扫描微信进程内存"""
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import os
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import platform
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import subprocess
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import sys
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from .common import collect_db_files, cross_verify_keys, save_results, scan_memory_for_keys
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def _find_binary():
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"""查找对应架构的 C 二进制。"""
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machine = platform.machine()
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if machine == "arm64":
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name = "find_all_keys_macos.arm64"
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elif machine == "x86_64":
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name = "find_all_keys_macos.x86_64"
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else:
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raise RuntimeError(f"不支持的 macOS 架构: {machine}")
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# 优先查找 bin/ 目录（pip 安装后位于包内）
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pkg_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
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bin_path = os.path.join(pkg_dir, "bin", name)
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if os.path.isfile(bin_path):
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return bin_path
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raise RuntimeError(
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f"找不到密钥提取二进制: {bin_path}\n"
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"请确认安装包完整"
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)
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def extract_keys(db_dir, output_path, pid=None):
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"""通过 C 二进制提取 macOS 微信数据库密钥。
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C 二进制需要在微信数据目录的父目录下运行，
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因为它会自动检测 db_storage 子目录。
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输出 all_keys.json 到当前工作目录。
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Args:
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db_dir: 微信 db_storage 目录
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output_path: all_keys.json 输出路径
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pid: 未使用（C 二进制自动检测进程）
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Returns:
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dict: salt_hex -> enc_key_hex 映射
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"""
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import re
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import json
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binary = _find_binary()
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# C 二进制的工作目录需要是 db_storage 的父目录
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work_dir = os.path.dirname(db_dir)
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if not os.path.isdir(work_dir):
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raise RuntimeError(f"微信数据目录不存在: {work_dir}")
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print(f"[+] 使用 C 二进制提取密钥: {binary}")
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print(f"[+] 工作目录: {work_dir}")
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try:
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result = subprocess.run(
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[binary],
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cwd=work_dir,
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capture_output=True,
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text=True,
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timeout=120,
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)
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except subprocess.TimeoutExpired:
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raise RuntimeError("密钥提取超时（120s）")
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except PermissionError:
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raise RuntimeError(
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f"无法执行 {binary}\n"
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"请确保文件有执行权限: chmod +x " + binary
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)
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# 打印 C 二进制的输出
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if result.stdout:
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print(result.stdout)
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if result.stderr:
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print(result.stderr, file=sys.stderr)
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# C 二进制输出 all_keys.json 到 work_dir
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c_output = os.path.join(work_dir, "all_keys.json")
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if not os.path.exists(c_output):
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if "task_for_pid" in (result.stdout or "") + (result.stderr or ""):
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raise RuntimeError(
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"需要 root 权限才能读取微信进程内存。\n"
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"请使用: sudo wechat-cli init"
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)
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raise RuntimeError(
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"C 二进制未能生成密钥文件。\n"
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f"stdout: {result.stdout}\nstderr: {result.stderr}"
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)
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# 读取并转存到 output_path
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with open(c_output, encoding="utf-8") as f:
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keys_data = json.load(f)
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with open(output_path, 'w', encoding='utf-8') as f:
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json.dump(keys_data, f, indent=2, ensure_ascii=False)
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# 清理 C 二进制的临时输出
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if os.path.abspath(c_output) != os.path.abspath(output_path):
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os.remove(c_output)
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# 构建 salt -> key 映射
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key_map = {}
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for rel, info in keys_data.items():
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if isinstance(info, dict) and "enc_key" in info and "salt" in info:
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key_map[info["salt"]] = info["enc_key"]
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print(f"\n[+] 提取到 {len(key_map)} 个密钥，保存到: {output_path}")
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return key_map
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