- Android ART Hook
- Native Inline Hook
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- ARM64
- ARM32(no tested)
- Thumb-2
4.4(ART Runtime) - 11.0 dev-preview-1
- annotation
annotation api - hooklib
core lib of art hook - nativehook
lib of native hook - xposedcompat
stable implement of xposed api compat for sandhook - xposedcompat_new
annother implement of xposed api compat for sandhook(hook more fast first time) - hookers
hook plugin demo for annotation api
implementation 'com.swift.sandhook:hooklib:4.2.0'
// need for android 11
implementation 'com.swift.sandhook:nativehook:4.2.0'- hook method must be a static method
- first par must be this if method is not static
- method description must "same"(can be isAssignableFrom) with origin method
- backup method same with above
@HookClass(Activity.class)
//@HookReflectClass("android.app.Activity")
public class ActivityHooker {
@HookMethodBackup("onCreate")
@MethodParams(Bundle.class)
static Method onCreateBackup;
@HookMethodBackup("onPause")
static HookWrapper.HookEntity onPauseBackup;
@HookMethod("onCreate")
@MethodParams(Bundle.class)
public static void onCreate(Activity thiz, Bundle bundle) throws Throwable {
Log.e("ActivityHooker", "hooked onCreate success " + thiz);
SandHook.callOriginByBackup(onCreateBackup, thiz, bundle);
}
@HookMethod("onPause")
public static void onPause(@ThisObject Activity thiz) throws Throwable {
Log.e("ActivityHooker", "hooked onPause success " + thiz);
onPauseBackup.callOrigin(thiz);
}
}
//or like this:
@HookClass(TestClass.class)
public class NewAnnotationApiHooker {
@HookMethod("testNewHookApi")
public static void onTestNewHookApi(@ThisObject TestClass thiz, @Param("com.swift.sandhook.MainActivity") Activity activity, int a) {
Log.e("TestClassHook", "testNewHookApi been hooked");
onTestNewHookApiBackup(thiz, activity, a);
}
@HookMethodBackup("testNewHookApi")
public static void onTestNewHookApiBackup(@ThisObject TestClass thiz, @Param("com.swift.sandhook.MainActivity") Activity activity, int a) {
onTestNewHookApiBackup(thiz, activity, a);
}
}
//first set debuggable
SandHookConfig.DEBUG = BuildConfig.DEBUG;
and
//add hookers
SandHook.addHookClass(CtrHook.class, LogHooker.class, CustmizeHooker.class, ActivityHooker.class, ObjectHooker.class);
you can also use:
SanHook.public static boolean hook(Member target, Method hook, Method backup) {}if hookers is in plugin(like xposed):
provided 'com.swift.sandhook:hookannotation:4.2.0'in your plugin
if OS <= 5.1 backup method can call itself to avoid be inlining
Now you can use Xposed api:
We have two different implements:
//stable
implementation 'com.swift.sandhook:xposedcompat:4.2.0'
//or
//hook fast first time
implementation 'com.swift.sandhook:xposedcompat_new:4.2.0'//setup for xposed
//for xposed compat only(no need xposed comapt new)
XposedCompat.cacheDir = getCacheDir();
//for load xp module(sandvxp)
XposedCompat.context = this;
XposedCompat.classLoader = getClassLoader();
XposedCompat.isFirstApplication= true;
//do hook
XposedHelpers.findAndHookMethod(Activity.class, "onResume", new XC_MethodHook() {
@Override
protected void beforeHookedMethod(MethodHookParam param) throws Throwable {
super.beforeHookedMethod(param);
Log.e("XposedCompat", "beforeHookedMethod: " + param.method.getName());
}
@Override
protected void afterHookedMethod(MethodHookParam param) throws Throwable {
super.afterHookedMethod(param);
Log.e("XposedCompat", "afterHookedMethod: " + param.method.getName());
}
});We can do nothing to prevent some methods been inlined before app start, but we can try to disable VM Jit Inline after launch.
if you will hook some method that could be inlined, please call SandHook.disableVMInline()(OS >= 7.0) in Application.OnCreate()
SandHook.tryDisableProfile(getPackageName());
SandHook.disableDex2oatInline(fullyDisableDex2oat);
or
ArtDexOptimizer.dexoatAndDisableInline to dex2oat manuly
You can also deoptimize a caller that inlined your hook method by SandHook.deCompile(caller), just implement >= 7.0
Hidden API
SandHook.passApiCheck();
To bypass hidden api on P & Q
You must set debuggble of the target hook process before init when OS >= 8.0.
SandHookConfig.DEBUG =
#include "includes/sandhook.h"
bool nativeHookNoBackup(void* origin, void* hook);
#include "sandhook_native.h"
void* SandInlineHook(void* origin, void* replace);
void* SandInlineHookSym(const char* so, const char* symb, void* replace);
return is backup method
you can insert a break point in body of method(not only start of method), so you can read/write registers in break point.
bool SandBreakPoint(void* origin, void (*callback)(REG[]));
bool SandSingleInstBreakPoint(void *origin, BreakCallback(callback));
#include "sandhook_native.h"
void* SandSingleInstHook(void* origin, void* replace);
void* SandSingleInstHookSym(const char* so, const char* symb, void* replace);
use it when your method is <= 16bytes(64bit)/8bytes(32bit)
SandSingleInstHook only need 4bytes length
- disassembler (only implement important instructions)
- assembler (only implement important instructions)
non-Root Xposed Environment Demo (VirtualApp with SandHook):
https://github.com/ganyao114/SandVXposed
Unofficial xposed framework >= 8.0
See release above
https://github.com/ElderDrivers/EdXposed
in MyApp.java
//if you want test Android Q, please set true, because SDK_INT of Android Q is still 28 public final static boolean testAndroidQ = false;