Primer paso de la investigacion. Se aportan el .apk, las carpetas con el apk extraido y el apk descompilado. El archivo API_DOCUMENTATION.md es un archivo donde se anotaran los descubrimientos del funcionamiento de la API, y los .py son scripts para probar la funcionalidad de la API con los métodos que vayamos encontrando. Finalmente, los archivos .js son scripts de Frida para extraer informacion de la APP durante la ejecucion.

apk_decompiled/sources/androidx/room/q.java

@@ -0,0 +1,138 @@
+package androidx.room;
+
+import android.os.Binder;
+import android.os.IBinder;
+import android.os.IInterface;
+import android.os.Parcel;
+import android.os.RemoteException;
+import android.util.Log;
+import kotlin.Unit;
+import kotlin.jvm.internal.Intrinsics;
+
+/* loaded from: classes.dex */
+public final class q extends Binder implements m {
+
+    /* renamed from: c, reason: collision with root package name */
+    public final /* synthetic */ MultiInstanceInvalidationService f4003c;
+
+    public q(MultiInstanceInvalidationService multiInstanceInvalidationService) {
+        this.f4003c = multiInstanceInvalidationService;
+        attachInterface(this, m.f3982b);
+    }
+
+    @Override // android.os.IInterface
+    public final IBinder asBinder() {
+        return this;
+    }
+
+    /* JADX WARN: Type inference failed for: r1v4, types: [java.lang.Object, androidx.room.k] */
+    /* JADX WARN: Type inference failed for: r1v9, types: [java.lang.Object, androidx.room.k] */
+    @Override // android.os.Binder
+    public final boolean onTransact(int i, Parcel parcel, Parcel parcel2, int i4) {
+        int i5 = 0;
+        String str = m.f3982b;
+        if (i >= 1 && i <= 16777215) {
+            parcel.enforceInterface(str);
+        }
+        if (i == 1598968902) {
+            parcel2.writeString(str);
+            return true;
+        }
+        l callback = null;
+        l callback2 = null;
+        if (i == 1) {
+            IBinder readStrongBinder = parcel.readStrongBinder();
+            if (readStrongBinder != null) {
+                IInterface queryLocalInterface = readStrongBinder.queryLocalInterface(l.f3981a);
+                if (queryLocalInterface == null || !(queryLocalInterface instanceof l)) {
+                    ?? obj = new Object();
+                    obj.f3980c = readStrongBinder;
+                    callback = obj;
+                } else {
+                    callback = (l) queryLocalInterface;
+                }
+            }
+            String readString = parcel.readString();
+            Intrinsics.checkNotNullParameter(callback, "callback");
+            if (readString != null) {
+                MultiInstanceInvalidationService multiInstanceInvalidationService = this.f4003c;
+                synchronized (multiInstanceInvalidationService.f3950c) {
+                    try {
+                        int i6 = multiInstanceInvalidationService.f3948a + 1;
+                        multiInstanceInvalidationService.f3948a = i6;
+                        if (multiInstanceInvalidationService.f3950c.register(callback, Integer.valueOf(i6))) {
+                            multiInstanceInvalidationService.f3949b.put(Integer.valueOf(i6), readString);
+                            i5 = i6;
+                        } else {
+                            multiInstanceInvalidationService.f3948a--;
+                        }
+                    } catch (Throwable th) {
+                        throw th;
+                    }
+                }
+            }
+            parcel2.writeNoException();
+            parcel2.writeInt(i5);
+            return true;
+        }
+        if (i == 2) {
+            IBinder readStrongBinder2 = parcel.readStrongBinder();
+            if (readStrongBinder2 != null) {
+                IInterface queryLocalInterface2 = readStrongBinder2.queryLocalInterface(l.f3981a);
+                if (queryLocalInterface2 == null || !(queryLocalInterface2 instanceof l)) {
+                    ?? obj2 = new Object();
+                    obj2.f3980c = readStrongBinder2;
+                    callback2 = obj2;
+                } else {
+                    callback2 = (l) queryLocalInterface2;
+                }
+            }
+            int readInt = parcel.readInt();
+            Intrinsics.checkNotNullParameter(callback2, "callback");
+            MultiInstanceInvalidationService multiInstanceInvalidationService2 = this.f4003c;
+            synchronized (multiInstanceInvalidationService2.f3950c) {
+                multiInstanceInvalidationService2.f3950c.unregister(callback2);
+            }
+            parcel2.writeNoException();
+            return true;
+        }
+        if (i != 3) {
+            return super.onTransact(i, parcel, parcel2, i4);
+        }
+        int readInt2 = parcel.readInt();
+        String[] tables = parcel.createStringArray();
+        Intrinsics.checkNotNullParameter(tables, "tables");
+        MultiInstanceInvalidationService multiInstanceInvalidationService3 = this.f4003c;
+        synchronized (multiInstanceInvalidationService3.f3950c) {
+            String str2 = (String) multiInstanceInvalidationService3.f3949b.get(Integer.valueOf(readInt2));
+            if (str2 == null) {
+                Log.w("ROOM", "Remote invalidation client ID not registered");
+            } else {
+                int beginBroadcast = multiInstanceInvalidationService3.f3950c.beginBroadcast();
+                while (i5 < beginBroadcast) {
+                    try {
+                        Object broadcastCookie = multiInstanceInvalidationService3.f3950c.getBroadcastCookie(i5);
+                        Intrinsics.checkNotNull(broadcastCookie, "null cannot be cast to non-null type kotlin.Int");
+                        Integer num = (Integer) broadcastCookie;
+                        int intValue = num.intValue();
+                        String str3 = (String) multiInstanceInvalidationService3.f3949b.get(num);
+                        if (readInt2 != intValue && Intrinsics.areEqual(str2, str3)) {
+                            try {
+                                ((l) multiInstanceInvalidationService3.f3950c.getBroadcastItem(i5)).a(tables);
+                            } catch (RemoteException e4) {
+                                Log.w("ROOM", "Error invoking a remote callback", e4);
+                            }
+                        }
+                        i5++;
+                    } catch (Throwable th2) {
+                        multiInstanceInvalidationService3.f3950c.finishBroadcast();
+                        throw th2;
+                    }
+                }
+                multiInstanceInvalidationService3.f3950c.finishBroadcast();
+                Unit unit = Unit.INSTANCE;
+            }
+        }
+        return true;
+    }
+}