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/b/B.java

@@ -0,0 +1,166 @@
+package b;
+
+import android.os.Build;
+import android.window.OnBackInvokedCallback;
+import android.window.OnBackInvokedDispatcher;
+import androidx.lifecycle.J;
+import java.util.Iterator;
+import java.util.ListIterator;
+import kotlin.collections.ArrayDeque;
+import kotlin.jvm.internal.Intrinsics;
+
+/* loaded from: classes.dex */
+public final class B {
+
+    /* renamed from: a, reason: collision with root package name */
+    public final Runnable f4096a;
+
+    /* renamed from: b, reason: collision with root package name */
+    public final ArrayDeque f4097b = new ArrayDeque();
+
+    /* renamed from: c, reason: collision with root package name */
+    public r f4098c;
+
+    /* renamed from: d, reason: collision with root package name */
+    public final OnBackInvokedCallback f4099d;
+
+    /* renamed from: e, reason: collision with root package name */
+    public OnBackInvokedDispatcher f4100e;
+
+    /* renamed from: f, reason: collision with root package name */
+    public boolean f4101f;
+
+    /* renamed from: g, reason: collision with root package name */
+    public boolean f4102g;
+
+    public B(Runnable runnable) {
+        this.f4096a = runnable;
+        int i = Build.VERSION.SDK_INT;
+        if (i >= 33) {
+            this.f4099d = i >= 34 ? x.f4145a.a(new s(this, 0), new s(this, 1), new t(this, 0), new t(this, 1)) : v.f4140a.a(new t(this, 2));
+        }
+    }
+
+    public final void a(J owner, r onBackPressedCallback) {
+        Intrinsics.checkNotNullParameter(owner, "owner");
+        Intrinsics.checkNotNullParameter(onBackPressedCallback, "onBackPressedCallback");
+        androidx.lifecycle.C lifecycle = owner.getLifecycle();
+        if (lifecycle.b() == androidx.lifecycle.B.f3280a) {
+            return;
+        }
+        onBackPressedCallback.addCancellable(new y(this, lifecycle, onBackPressedCallback));
+        f();
+        onBackPressedCallback.setEnabledChangedCallback$activity_release(new C0251A(0, this, B.class, "updateEnabledCallbacks", "updateEnabledCallbacks()V", 0, 0));
+    }
+
+    public final z b(r onBackPressedCallback) {
+        Intrinsics.checkNotNullParameter(onBackPressedCallback, "onBackPressedCallback");
+        this.f4097b.add(onBackPressedCallback);
+        z zVar = new z(this, onBackPressedCallback);
+        onBackPressedCallback.addCancellable(zVar);
+        f();
+        onBackPressedCallback.setEnabledChangedCallback$activity_release(new C0251A(0, this, B.class, "updateEnabledCallbacks", "updateEnabledCallbacks()V", 0, 1));
+        return zVar;
+    }
+
+    /* JADX WARN: Multi-variable type inference failed */
+    /* JADX WARN: Type inference failed for: r2v2 */
+    /* JADX WARN: Type inference failed for: r2v3 */
+    /* JADX WARN: Type inference failed for: r2v4, types: [java.lang.Object] */
+    public final void c() {
+        r rVar;
+        r rVar2 = this.f4098c;
+        if (rVar2 == null) {
+            ArrayDeque arrayDeque = this.f4097b;
+            ListIterator listIterator = arrayDeque.listIterator(arrayDeque.size());
+            while (true) {
+                if (!listIterator.hasPrevious()) {
+                    rVar = 0;
+                    break;
+                } else {
+                    rVar = listIterator.previous();
+                    if (((r) rVar).isEnabled()) {
+                        break;
+                    }
+                }
+            }
+            rVar2 = rVar;
+        }
+        this.f4098c = null;
+        if (rVar2 != null) {
+            rVar2.handleOnBackCancelled();
+        }
+    }
+
+    /* JADX WARN: Multi-variable type inference failed */
+    /* JADX WARN: Type inference failed for: r2v2 */
+    /* JADX WARN: Type inference failed for: r2v3 */
+    /* JADX WARN: Type inference failed for: r2v4, types: [java.lang.Object] */
+    public final void d() {
+        r rVar;
+        r rVar2 = this.f4098c;
+        if (rVar2 == null) {
+            ArrayDeque arrayDeque = this.f4097b;
+            ListIterator listIterator = arrayDeque.listIterator(arrayDeque.size());
+            while (true) {
+                if (!listIterator.hasPrevious()) {
+                    rVar = 0;
+                    break;
+                } else {
+                    rVar = listIterator.previous();
+                    if (((r) rVar).isEnabled()) {
+                        break;
+                    }
+                }
+            }
+            rVar2 = rVar;
+        }
+        this.f4098c = null;
+        if (rVar2 != null) {
+            rVar2.handleOnBackPressed();
+        } else {
+            this.f4096a.run();
+        }
+    }
+
+    public final void e(boolean z3) {
+        OnBackInvokedDispatcher onBackInvokedDispatcher = this.f4100e;
+        OnBackInvokedCallback onBackInvokedCallback = this.f4099d;
+        if (onBackInvokedDispatcher == null || onBackInvokedCallback == null) {
+            return;
+        }
+        v vVar = v.f4140a;
+        if (z3 && !this.f4101f) {
+            vVar.b(onBackInvokedDispatcher, 0, onBackInvokedCallback);
+            this.f4101f = true;
+        } else {
+            if (z3 || !this.f4101f) {
+                return;
+            }
+            vVar.c(onBackInvokedDispatcher, onBackInvokedCallback);
+            this.f4101f = false;
+        }
+    }
+
+    public final void f() {
+        boolean z3 = this.f4102g;
+        boolean z4 = false;
+        ArrayDeque arrayDeque = this.f4097b;
+        if (arrayDeque == null || !arrayDeque.isEmpty()) {
+            Iterator<E> it = arrayDeque.iterator();
+            while (true) {
+                if (!it.hasNext()) {
+                    break;
+                } else if (((r) it.next()).isEnabled()) {
+                    z4 = true;
+                    break;
+                }
+            }
+        }
+        this.f4102g = z4;
+        if (z4 == z3 || Build.VERSION.SDK_INT < 33) {
+            return;
+        }
+        e(z4);
+    }
+}