test_frida_local.py
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#!/usr/bin/env python3
"""
Frida 本地 attach 测试 — 验证 get_local_device() 捕获 SQLCipher key。
在 Ubuntu proot 容器内执行。
"""
import subprocess, sys, json, time, os
REPORT = {"test": "frida_local", "steps": {}, "overall": None}
def log_step(name, ok, detail=""):
status = "[OK]" if ok else "[FAIL]"
print(f" {status} {name}")
if detail:
print(f" {detail}")
REPORT["steps"][name] = {"ok": ok, "detail": detail}
return ok
def get_wechat_pid():
"""Get WeChat main process PID via pgrep."""
try:
r = subprocess.run(
["su", "-c", "pgrep -x com.tencent.mm"],
capture_output=True, text=True, timeout=5
)
if r.returncode == 0 and r.stdout.strip():
pids = sorted([int(p.strip()) for p in r.stdout.strip().split("\n") if p.strip()])
return pids[0] # Main process is smallest PID
except Exception as e:
print(f" pgrep error: {e}")
return None
def main():
print("=" * 60)
print("Frida 本地 Attach 测试")
print("=" * 60)
all_ok = True
# Step 1: Check frida Python package
print("\n[Step 1] Frida Python 包")
try:
import frida
print(f" [OK] frida {frida.__version__}")
REPORT["steps"]["frida_python"] = {"ok": True, "version": frida.__version__}
except ImportError:
print(" [FAIL] frida 未安装。运行: pip install frida==17.9.10")
REPORT["steps"]["frida_python"] = {"ok": False}
save_report()
return 1
# Step 2: Check frida-server
print("\n[Step 2] Frida Server 运行状态")
r = subprocess.run(["su", "-c", "ps -A | grep frida-server"],
capture_output=True, text=True)
has_frida_server = r.returncode == 0 and "frida-server" in r.stdout
all_ok &= log_step("frida_server", has_frida_server,
"running" if has_frida_server else "frida-server 未运行")
# Step 3: Get local device
print("\n[Step 3] 获取本地 Frida 设备")
try:
import frida
device = frida.get_local_device()
log_step("local_device", True, f"device.name={device.name}")
except Exception as e:
all_ok &= log_step("local_device", False, str(e))
save_report()
return 1
# Step 4: Find WeChat PID
print("\n[Step 4] 查找微信进程 PID")
pid = get_wechat_pid()
if pid:
all_ok &= log_step("wechat_pid", True, f"PID={pid}")
else:
print(" 微信未运行，尝试启动...")
subprocess.run(["su", "-c", "am start -n com.tencent.mm/.ui.LauncherUI"],
capture_output=True)
time.sleep(3)
pid = get_wechat_pid()
if pid:
all_ok &= log_step("wechat_pid", True, f"PID={pid} (已自动启动)")
else:
all_ok &= log_step("wechat_pid", False, "无法获取微信 PID")
save_report()
return 1
# Step 5: Attach to WeChat
print(f"\n[Step 5] Attach 微信进程 (PID={pid})")
try:
session = device.attach(pid)
all_ok &= log_step("attach", True, f"attached to PID={pid}")
except Exception as e:
all_ok &= log_step("attach", False, str(e))
save_report()
return 1
# Step 6: Load minimal key hunter script
print("\n[Step 6] 加载 Key Hunter 脚本")
js_code = """
var captured = false;
var keyInfo = null;
function findModuleBase(moduleName) {
var modules = Process.enumerateModules();
for (var i = 0; i < modules.length; i++) {
if (modules[i].name === moduleName) {
return modules[i].base;
}
}
return null;
}
function hookSqlite3Key() {
var mod = Process.findModuleByName("libWCDB.so");
if (!mod) {
send({type: "info", payload: {msg: "libWCDB.so not loaded yet"}});
return false;
}
var sqlite3Key = Module.findExportByName("libWCDB.so", "sqlite3_key");
if (!sqlite3Key) {
send({type: "error", payload: {msg: "sqlite3_key not found"}});
return false;
}
send({type: "info", payload: {msg: "FOUND: sqlite3_key at " + sqlite3Key}});
Interceptor.attach(sqlite3Key, {
onEnter: function(args) {
if (captured) return;
var keyPtr = args[1];
var keyLen = args[2].toInt32();
if (keyLen > 0 && keyLen < 256) {
var key = Memory.readUtf8String(keyPtr, keyLen);
var keyHex = Memory.readByteArray(keyPtr, keyLen);
var hexStr = "";
var view = new Uint8Array(keyHex);
for (var i = 0; i < view.length; i++) {
hexStr += ("0" + view[i].toString(16)).slice(-2);
}
captured = true;
keyInfo = {key: key, hex: hexStr, len: keyLen};
send({type: "key", payload: {hex: hexStr, len: keyLen, via: "libWCDB.so!sqlite3_key"}});
}
}
});
return true;
}
// Try immediately, and retry if libWCDB.so not loaded
if (!hookSqlite3Key()) {
var retry = 0;
var interval = setInterval(function() {
retry++;
if (hookSqlite3Key() || retry > 30) {
clearInterval(interval);
if (!captured && retry > 30) {
send({type: "error", payload: {msg: "Failed to hook sqlite3_key after 30 retries"}});
}
}
}, 1000);
}
send({type: "info", payload: {msg: "Key hunter script loaded. Waiting for DB open..."}});
"""
captured_keys = []
def on_message(msg, data):
if msg.get("type") != "send":
return
payload = msg.get("payload", {})
ptype = payload.get("type", "")
if ptype == "key":
captured_keys.append(payload)
print(f" [KEY] hex={payload.get('hex')} len={payload.get('len')}")
elif ptype == "info":
print(f" [INFO] {payload.get('msg', '')}")
elif ptype == "error":
print(f" [ERROR] {payload.get('msg', '')}")
try:
script = session.create_script(js_code)
script.on("message", on_message)
script.load()
all_ok &= log_step("script_load", True, "Key hunter loaded")
except Exception as e:
all_ok &= log_step("script_load", False, str(e))
session.detach()
save_report()
return 1
# Step 7: Wait for key capture
print("\n[Step 7] 等待 key 捕获（最多 30 秒）...")
print(" 提示：打开微信，浏览聊天记录触发 DB 访问")
for i in range(30):
if captured_keys:
break
time.sleep(1)
if i % 5 == 0:
print(f" ...已等待 {i} 秒")
if captured_keys:
key = captured_keys[0]
all_ok &= log_step("key_capture", True, f"hex={key['hex'][:20]}... len={key['len']}")
# Update config
try:
config = {}
if os.path.exists("config.json"):
with open("config.json") as f:
config = json.load(f)
config["sqlcipher_key"] = bytes.fromhex(key["hex"]).decode("latin-1")
with open("config.json", "w") as f:
json.dump(config, f, indent=2, ensure_ascii=False)
print(f" [INFO] Key 已保存到 config.json")
except Exception as e:
print(f" [WARN] 保存 key 失败: {e}")
else:
all_ok &= log_step("key_capture", False, "30秒内未捕获到 key")
session.detach()
# Summary
REPORT["overall"] = "PASS" if all_ok else "FAIL"
REPORT["timestamp"] = subprocess.check_output(["date", "-Iseconds"]).decode().strip()
save_report()
print("\n" + "=" * 60)
print(f"结果: {REPORT['overall']}")
print("=" * 60)
return 0 if all_ok else 1
def save_report():
with open("test_report_frida.json", "w") as f:
json.dump(REPORT, f, indent=2, ensure_ascii=False)
print("\n详细报告: test_report_frida.json")
if __name__ == "__main__":
sys.exit(main())