Dji Mimo APP逆向.1(pocket 2直播模式+物体追踪)

云深之无迹 2021-05-08 00:00

无损芯片检测技术——X-RAY检测，可观察芯片内部结构、判断芯片质量及真假 如何提升高压系统的实时性能?

大疆的东西，我真的太喜欢了。。。喜欢到想看看是如何做出来的。

逆向菜鸡，安卓羸弱，反正就是个看热闹的主，大佬们轻点拍~

这个就是将应用退壳的东西

具体是一个梆梆企业版的壳子，我是在真机上面把壳砸了的

大概就是在运行前，需要从壳里面把真正的应用解压出来，然后我们从内存里面把这个dump出来，因为是一个完整的调用链条，然后再组装回来~~~~

https://mydown.yesky.com/pcsoft/413552646.html

当然了，这个东西是可以解压的

算了，本来想展示点别的东西，这个电脑不合适，看源码吧

其实java还好一点，反编译的源码还有点难懂，C#完全就是源码。。。

一个是R文件的解析，在安卓的世界里面各种资源都是要被打包到R文件里面的，所以你看到的是一个这样的反编译的资源文件

我推测，对于一些控制类的操作是用json打包发送的

视频流+控制“流”

Google分析的组件，毕竟作为国际大厂，出海是必然的

二维码的组件，作为一些登录时使用

第二个jar文件，我推测是给poctek 2代的直播流写的模块

你看这个是虎牙直播的组件

 public UUID getUUId() { return this.uuid; }
 public boolean isEmpty() { return this.raw.isEmpty(); }

可以点进去仔细的看，这里的包没有混淆

这里是dji的实现，让我稍微看看是什么东西

package com.dji.socialsdkwx.login.wechat;
import android.content.Intent;import android.os.Bundle;import androidx.appcompat.app.AppCompatActivity;import com.tencent.mm.opensdk.modelbase.BaseReq;import com.tencent.mm.opensdk.modelbase.BaseResp;import com.tencent.mm.opensdk.openapi.IWXAPI;import com.tencent.mm.opensdk.openapi.IWXAPIEventHandler;
public class SocialWeChatActivity extends AppCompatActivity implements IWXAPIEventHandler { private IWXAPI api;
 /* access modifiers changed from: protected */ public void onCreate(Bundle bundle) { }
 /* access modifiers changed from: protected */ public void onNewIntent(Intent intent) { }
 public void onReq(BaseReq baseReq) { }
 public void onResp(BaseResp baseResp) { }}

import com.tencent.mm.opensdk.modelbase.BaseReq;import com.tencent.mm.opensdk.modelbase.BaseResp;import com.tencent.mm.opensdk.openapi.IWXAPI;import com.tencent.mm.opensdk.openapi.IWXAPIEventHandler;

你看这个，其实是微信的登录接口，至于其它的可能要设置语言才可以打开

package com.dji.livestream.livetype;
import android.app.Dialog;import android.content.Intent;import android.os.Handler;import android.os.Looper;import android.view.View;import androidx.annotation.NonNull;import androidx.annotation.Nullable;import androidx.appcompat.app.AppCompatActivity;

import com.dji.device.util.c;import com.dji.livestream.R;import com.dji.livestream.bean.DJILiveLoadingStage;import com.dji.livestream.bean.b;import com.dji.livestream.livetype.-$;import com.dji.livestream.livetype.a;import com.dji.livestream.page.LiveStreamBaseActivity;import dji.base.ui.thirdparty.permission.CommonPermissionHelper;

import org.greenrobot.eventbus.ThreadMode;import org.greenrobot.eventbus.l;

这里的安卓库分为三类，原生的安卓构件，dji自己的库

以及使用的三方库

EventBus的特性包括：

 简化了组件间的通讯

 分离了事件的发送者和接受者；

 在Activity、Fragment和线程中表现良好；

 避免了复杂的和易错的依赖关系和声明周期问题；

 使得代码更简洁；

 更快；

 更小（约50k的jar包）

 实际上超过1亿的app证明了它的性能；

 有高级属性，例如发布线程、订阅属性等。

可以看到有很多新的软件库在里面，比如全新的储存管理

以及有很多的广播接收器，Facebook，HW

看，HW的推送库

以及全新的安卓库

干哦兄弟！

原生C++

以及FFmpeg的解码库

以及人脸追踪？？？是用的这种东西吗

 private final String[] PERMISSIONS = {"android.permission.BLUETOOTH", "android.permission.BLUETOOTH_ADMIN", "android.permission.ACCESS_FINE_LOCATION", "android.permission.ACCESS_COARSE_LOCATION"};// permissions={blue,blue_admin,access_file_location,access_coarse_location} private final int REQUEST_CODE_LIVE_SETTINGS = 1011; // request_code_live_settings

这里的代码做了一点识别，可以看到要动态申请的权限是蓝牙的

 private Dialog confirmDialog; private com.dji.device.common.a connectHelper; private View facebookLive; private View facebookSelectedIcon; private Handler handler = new Handler(Looper.getMainLooper()); private View huyaLive; private View huyaSelectedIcon; private View kuaiShouLive; private View kuaiShouSelectedIcon; private CommonPermissionHelper permissionHelper; private CommonPermissionHelper.a permissionRequestData; private a.b presenter; private View rtmpLive; private View rtmpSelectedIcon;

在看这些函数就很有趣了，有连接大疆相机时候的指引，脸书的直播，虎牙的直播，快手的直播，以及支持自定义的RTMP直播

import com.dji.device.connect.bean.c;

package com.dji.network.bean;import com.google.gson.annotations.SerializedName;public class BaseBean extends BaseSerializable { @SerializedName("code") protected int code; @SerializedName("msg") protected String msg;
 public int getCode() { return this.code; }
 public String getMsg() { return this.msg; }
 public void setCode(int i) { this.code = i; }
 public void setMsg(String str) { this.msg = str; }}

基本可序列化？？？

这里是小米的推送包

 public String dataPlatform() { return "XiaoMi Push"; }

OkHttp 是一个高效的 HTTP 客户端，具有非常多的优势：

能够高效的执行 http，数据加载速度更快，更省流量
支持 GZIP 压缩，提升速度，节省流量
缓存响应数据，避免了重复的网络请求
使用简单，支持同步阻塞调用和带回调的异步调用

Retrofit2简单的说就是一个网络请求的适配器，它将一个基本的Java接口通过动态代理的方式翻译成一个HTTP请求，并通过OkHttp去发送请求。

Gson（又称Google Gson）是Google公司发布的一个开放源代码的Java库，主要用途为序列化Java对象为JSON字符串，或反序列化JSON字符串成Java对象。

https://djigo-hk.djiservice.org

不鸟我

Osmo Shield Domain

package com.dji.pano.osmo.mobile;
import com.dji.pano.osmo.mobile.b;
class b$1 implements b.a { final /* synthetic */ b a;
 b$1(b bVar) { this.a = bVar; }
 public void a() { }
 public void a(int i, String str) { this.a.a(i, str); }
 public void a(String str) { }
 public void b() { }
 public void c() { }}

implements是一个类实现一个接口用的关键字，他是用来实现接口中定义的抽象方法。比如：people是一个接口，他里面有say这个方法。public interface people(){ public say();}但是接口没有方法体。只能通过一个具体的类去实现其中的方法体。比如chinese这个类，就实现了people这个接口。public class chinese implements people{ public say() {System.out.println("你好！");}}

https://github.com/square/wire

 public RootData(Integer num, EncryptionType encryptionType, PlatformType platformType, String str, Integer num2, Integer num3, ByteString byteString, String str2, Integer num4, String str3, ByteString byteString2) { super(a, byteString2); this.version = num; this.encryption = encryptionType; this.platform = platformType; this.app_key = str; this.app_version = num2; this.plaintext_len = num3; this.content = byteString; this.cmd = str2; this.timestamp = num4; this.signature = str3; }

这个是一个协议的实现我没有细研究，直接贴上来

package com.dji.tracking.jnienum;
public enum CameraFace { LTSOT_FRONT_CAMERA(1),    // ltsot_front_camera LTSOT_BEHIND_CAMERA(2);  public final int value;
 private CameraFace(int i) { this.value = i; }}

这个是关于脸部追踪的代码

package com.dji.tracking.jnienum;
public enum CheckedObjectType { ML_OBJ_OTHER(0, "其他"), ML_OBJ_HEAD_SHOULDER(1, "头肩"), ML_OBJ_PERSON(2, "人"), ML_OBJ_FACE(5, "脸"), ML_OBJ_PET(6, "宠物"), ML_OBJ_GESTURE_PALM(101, "手掌"), ML_OBJ_GESTURE_VICTORY(102, "V型手势"), ML_OBJ_GESTURE_OTHER(103, "其他手势"), ML_OBJ_NONE(-1, "NONE");  public final String tip; public final int value;
 private CheckedObjectType(int i, String str) { this.value = i; this.tip = str; }
 public static CheckedObjectType a(int i) { CheckedObjectType[] values = values(); for (CheckedObjectType checkedObjectType : values) { if (checkedObjectType.value == i) { return checkedObjectType; } } return ML_OBJ_NONE; }}

物体识别

package com.dji.tracking.jinout;
import androidx.core.util.Pools;
public class TrackingBox { private static Pools.SynchronizedPool<TrackingBox> sPool = new Pools.SynchronizedPool<>(10); public float centerX; public float centerY; public float height; public float width;
 public static TrackingBox obtain() { TrackingBox trackingBox = (TrackingBox) sPool.acquire(); return trackingBox != null ? trackingBox : new TrackingBox(); }
 public void recycle() { sPool.release(this); }}

绘制一个追踪的盒子

package com.dji.tracking.jnienum;
public enum RotateAngle { ML_ROTATE_0(0), ML_ROTATE_90_CLOCKWISE(1), ML_ROTATE_180(2), ML_ROTATE_90_COUNTERCLOCKWISE(3);  public final int value;
 private RotateAngle(int i) { this.value = i; }}

旋转的角度

package com.dji.tracking.jnienum;
import androidx.collection.SparseArrayCompat;
public enum TrackingMode { TK_MODE_UNFUSED(-1), TK_MODE_LOST(0), TK_MODE_TRACKED(1), TK_MODE_NOT_CONFIDENT(2), TK_MODE_REDETECTED(3), TK_MODE_GESTURE_STOP(4), TK_MODE_REAL_LOST(5);  private static final SparseArrayCompat<TrackingMode> h = new SparseArrayCompat<>(); public final int value;
 private TrackingMode(int i2) { this.value = i2; }
 public static TrackingMode a(int i2) { TrackingMode trackingMode = (TrackingMode) h.get(i2); if (trackingMode == null) { TrackingMode[] values = values(); int length = values.length; int i3 = 0; while (true) { if (i3 >= length) { break; } TrackingMode trackingMode2 = values[i3]; if (trackingMode2.value == i2) { trackingMode = trackingMode2; break; } i3++; } if (trackingMode == null) { trackingMode = TK_MODE_UNFUSED; } h.put(i2, trackingMode); } return trackingMode; }}

追踪模式

package com.dji.tracking;
import android.os.Build;import com.dji.tracking.a.a;import com.dji.tracking.a.b;
/* access modifiers changed from: package-private */public class g { private static final String[] a = {"HUAWEI ANE", "HONOR STF"};
 static f a() { String upperCase = String.format("%s %s", Build.BRAND, Build.MODEL).toUpperCase(); for (String str : a) { if (upperCase.contains(str)) { return new a(); } } return new b(); }}

这个不知道是为什么，单独的说了华为，大写？

最后看看这个，video里面有什么

package com.dji.video.codec;
import android.media.MediaCodec;import com.dji.video.stream.AACFrameDelegate;import com.dji.video.stream.AudioConfigs;import com.dji.video.utils.c;import java.nio.ByteBuffer;import java.util.UUID;

import java.util.UUID;
public class AudioStreamDecoder { private final int a = 0; private final int b = 1; private final int c = 3; private int d = 0; private MediaCodec e; private ByteBuffer[] f; private ByteBuffer[] g; private boolean h; private boolean i = false; private long j = 0; private final int k = 16384; private c l = new c(64, 16384); private byte[] m = new byte[16384]; private a n; private AudioConfigs o; private UUID p; private AACFrameDelegate q; private boolean r = false;
 class a extends Thread { private boolean b = false;
 a() { }
 public void run() { } }

音频解码类

package com.dji.video.codec;
import com.dji.video.codec.MediaCodecDecoder;import com.dji.video.edit.MvModel;import java.util.ArrayList;import java.util.Hashtable;import java.util.List;
public class c { public static List<MediaCodecDecoder.a> a = new ArrayList(); public static Hashtable<String, MediaCodecDecoder.b> b = new Hashtable<>();
 public static void a(ArrayList<MvModel> arrayList) { if (arrayList != null) { if (a.size() > 0) { a.clear(); } if (b.size() > 0) { b.clear(); } for (int i = 0; i < arrayList.size(); i++) { MvModel mvModel = arrayList.get(i); if (mvModel.d() == 1) { MediaCodecDecoder.b bVar = new MediaCodecDecoder.b(); String b2 = mvModel.b(); bVar.a = mvModel.e(); bVar.b = mvModel.f(); bVar.d = mvModel.g(); bVar.c = (int) (mvModel.h() + mvModel.c()); if (!b.containsKey(b2)) { b.put(b2, bVar); } else if (b.get(b2).c < bVar.c) { b.put(b2, bVar); } } } } }}

推测这个是视频编辑功能里面的一个子功能

下面的代码有这个库　

　MediaCodec类可用于访问Android底层的多媒体编解码器，例如，编码器/解码器组件。它是Android底层多媒体支持基础架构的一部分（通常与MediaExtractor, MediaSync, MediaMuxer, MediaCrypto, MediaDrm, Image, Surface, 以及AudioTrack一起使用）。


import android.media.MediaCodec;import android.media.MediaCodecInfo;import android.media.MediaCodecList;import android.media.MediaExtractor;import android.media.MediaFormat;

package com.dji.video.codec;
import android.media.MediaCodec;import android.media.MediaCodecInfo;import android.media.MediaCodecList;import android.media.MediaExtractor;import android.media.MediaFormat;import android.os.Build;import java.io.File;import java.io.IOException;import java.util.List;import junit.framework.Assert;
public class e {  public class a { private c b;
 public a(c cVar) { this.b = cVar; }
 private void a(int i) throws Exception { }
 public void a() throws Exception { } }
 public class b { private c b;
 public b(c cVar) { this.b = cVar; }
 private void a(MediaExtractor mediaExtractor, int i, MediaCodec mediaCodec) throws Exception { }
 public void a() throws Exception { } }
 public class c { int a = 0; boolean b = false; boolean c = false;
 public c() { } }
 public class d extends Thread { private a b;
 public d(a aVar) { this.b = aVar; }
 public void run() { try { this.b.a(); } catch (Exception e) { e.printStackTrace(); } } }
 /* renamed from: com.dji.video.codec.e$e reason: collision with other inner class name */ public class C0001e extends Thread { private b b;
 public C0001e(b bVar) { this.b = bVar; }
 public void run() { try { this.b.a(); } catch (Exception e) { e.printStackTrace(); } } }
 public e() { this.b = null; this.c = null; this.l = 1280; this.m = 720; this.n = this.l; this.o = this.m; this.p = this.l; this.q = this.m; this.r = 0; this.s = 0; this.t = 0; this.u = 0; this.v = 0; this.w = 0; this.x = 0; this.y = 0; this.z = "video/avc"; this.A = 6000000; this.B = 6000000; this.C = 25; this.D = 25; this.E = -1; this.I = false; this.J = false; this.O = 0; this.P = false; this.X = false; this.b = e(); this.c = f(); }
 static /* synthetic */ int J(e eVar) { int i2 = eVar.O; eVar.O = i2 + 1; return i2; }
 static /* synthetic */ int L(e eVar) { int i2 = eVar.T; eVar.T = i2 + 1; return i2; }
 /* access modifiers changed from: private */ public int a(MediaExtractor mediaExtractor) { return 0; }
 /* access modifiers changed from: private */ public void a(byte[] bArr, byte[] bArr2, int i2, int i3, int i4, int i5) { }
 private static boolean a(int i2) { if (!(i2 == 39 || i2 == 2130706688)) { switch (i2) { case 19: case 20: case 21: break; default: return false; } } return true; }
 /* access modifiers changed from: private */ public static int b(MediaCodecInfo mediaCodecInfo, String str) { MediaCodecInfo.CodecCapabilities capabilitiesForType = mediaCodecInfo.getCapabilitiesForType(str); for (int i2 = 0; i2 < capabilitiesForType.colorFormats.length; i2++) { int i3 = capabilitiesForType.colorFormats[i2]; if (a(i3)) { return i3; } } Assert.fail("找不到适合的颜色格式 " + mediaCodecInfo.getName() + " / " + str); return 0; }
 /* access modifiers changed from: private */ public static MediaCodecInfo b(String str) { String[] supportedTypes; int codecCount = MediaCodecList.getCodecCount(); for (int i2 = 0; i2 < codecCount; i2++) { MediaCodecInfo codecInfoAt = MediaCodecList.getCodecInfoAt(i2); if (codecInfoAt.isEncoder()) { for (String str2 : codecInfoAt.getSupportedTypes()) { if (str2.equalsIgnoreCase(str)) { return codecInfoAt; } } continue; } } return null; }
 private static boolean b(int i2) { if (!(i2 == 39 || i2 == 2130706688)) { switch (i2) { case 19: case 20: return false; case 21: break; default: throw new RuntimeException("unknown format " + i2); } } return true; }
 /* access modifiers changed from: private */ public void c(String str) { }
 private void d() throws IOException { }
 private String e() { return Build.MODEL; }
 private String f() { return Build.VERSION.RELEASE; }
 static /* synthetic */ int x(e eVar) { int i2 = eVar.M; eVar.M = i2 + 1; return i2; }
 public void a() { }
 public void a(long j2, long j3, int i2) { }
 public void a(long j2, long j3, String str, String str2, String str3, int i2) { }
 public void a(b bVar) { this.Y = bVar; }
 public void b() { }
 public void c() { }}

这段代码，emmm，啥也看不出出来了，只能猜了

https://www.android-doc.com/reference/android/media/MediaCodecInfo.CodecCapabilities.html

 public static int b(MediaCodecInfo mediaCodecInfo, String str) { MediaCodecInfo.CodecCapabilities capabilitiesForType = mediaCodecInfo.getCapabilitiesForType(str); for (int i2 = 0; i2 < capabilitiesForType.colorFormats.length; i2++) { int i3 = capabilitiesForType.colorFormats[i2]; if (a(i3)) { return i3; } } Assert.fail("找不到适合的颜色格式 " + mediaCodecInfo.getName() + " / " + str); return 0; }

看这个函数，传入一个编码函数，和一个strings

然后就是一个遍历在匹配一个什么东西？应该是颜色的格式

package com.dji.video.codec;
import android.graphics.BitmapFactory;
public class ImageDecoder { private int a; private int b;
 public static int[] get_image_paras(String str) { BitmapFactory.Options options = new BitmapFactory.Options(); options.inJustDecodeBounds = true; BitmapFactory.decodeFile(str, options); return new int[]{options.outWidth, options.outHeight, 0, 0}; }
 public int get_height() { return this.b; }
 public int[] get_image_data(String str) { return null; }
 public void get_image_para(String str) { }
 public int get_width() { return this.a; }}

这个函数简单，见名知其义

package com.dji.video.codec;
import java.util.HashMap;import wseemann.media.FFmpegMediaMetadataRetriever;
public class VideoDescription { private static final String a = "VideoDescription"; private String b; private HashMap<String, String> c;
 private void a(FFmpegMediaMetadataRetriever.a aVar, String str) { }
 private native void nativeGetDescription(String str, HashMap<String, String> hashMap);
 public void a(String str) { }
 public String b(String str) { return null; }}

这个函数是读取一个视频的info

就先到这里~下期再见

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