一点简单记录。
xposed原理包括将hook的method转为Native。因此可检测如下：
for (ApplicationInfo applicationInfo : applicationInfoList) {
if (applicationInfo.processName.equals("com.example.hookdetection")) {
Set classes = new HashSet();
DexFile dex;
try {
dex = new DexFile(applicationInfo.sourceDir);
Enumeration entries = dex.entries();
while(entries.hasMoreElements()) {
String entry = entries.nextElement();
classes.add(entry);
}
dex.close();
}
catch (IOException e) {
Log.e("HookDetection", e.toString());
}
for(String className : classes) {
if(className.startsWith("com.example.hookdetection")) {
try {
Class clazz = HookDetection.class.forName(className);
for(Method method : clazz.getDeclaredMethods()) {
if(Modifier.isNative(method.getModifiers())){
Log.wtf("HookDetection", "Native function found (could be hooked by Substrate or Xposed): "
+ clazz.getCanonicalName() + "->" + method.getName());
}
}
}
catch(ClassNotFoundException e) {
Log.wtf("HookDetection", e.toString());
}
}
}
}
}
所有xposed插件中，Hook isNative. 由于Hook在先，调用在后，可绕过。