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/recyclerview/widget/C0212d0.java

@@ -0,0 +1,127 @@
+package androidx.recyclerview.widget;
+
+import android.view.View;
+import android.view.animation.DecelerateInterpolator;
+import android.widget.Scroller;
+import java.util.ArrayList;
+
+/* renamed from: androidx.recyclerview.widget.d0, reason: case insensitive filesystem */
+/* loaded from: classes.dex */
+public class C0212d0 extends t0 {
+
+    /* renamed from: a, reason: collision with root package name */
+    public RecyclerView f3802a;
+
+    /* renamed from: b, reason: collision with root package name */
+    public final L0 f3803b = new L0(this);
+
+    /* renamed from: c, reason: collision with root package name */
+    public C0206a0 f3804c;
+
+    /* renamed from: d, reason: collision with root package name */
+    public C0206a0 f3805d;
+
+    public static int c(View view, AbstractC0208b0 abstractC0208b0) {
+        return ((abstractC0208b0.c(view) / 2) + abstractC0208b0.e(view)) - ((abstractC0208b0.l() / 2) + abstractC0208b0.k());
+    }
+
+    public static View d(AbstractC0238q0 abstractC0238q0, AbstractC0208b0 abstractC0208b0) {
+        int v3 = abstractC0238q0.v();
+        View view = null;
+        if (v3 == 0) {
+            return null;
+        }
+        int l4 = (abstractC0208b0.l() / 2) + abstractC0208b0.k();
+        int i = Integer.MAX_VALUE;
+        for (int i4 = 0; i4 < v3; i4++) {
+            View u3 = abstractC0238q0.u(i4);
+            int abs = Math.abs(((abstractC0208b0.c(u3) / 2) + abstractC0208b0.e(u3)) - l4);
+            if (abs < i) {
+                view = u3;
+                i = abs;
+            }
+        }
+        return view;
+    }
+
+    public final void a(RecyclerView recyclerView) {
+        RecyclerView recyclerView2 = this.f3802a;
+        if (recyclerView2 == recyclerView) {
+            return;
+        }
+        L0 l02 = this.f3803b;
+        if (recyclerView2 != null) {
+            ArrayList arrayList = recyclerView2.f3689j0;
+            if (arrayList != null) {
+                arrayList.remove(l02);
+            }
+            this.f3802a.setOnFlingListener(null);
+        }
+        this.f3802a = recyclerView;
+        if (recyclerView != null) {
+            if (recyclerView.getOnFlingListener() != null) {
+                throw new IllegalStateException("An instance of OnFlingListener already set.");
+            }
+            this.f3802a.k(l02);
+            this.f3802a.setOnFlingListener(this);
+            new Scroller(this.f3802a.getContext(), new DecelerateInterpolator());
+            h();
+        }
+    }
+
+    public final int[] b(AbstractC0238q0 abstractC0238q0, View view) {
+        int[] iArr = new int[2];
+        if (abstractC0238q0.d()) {
+            iArr[0] = c(view, f(abstractC0238q0));
+        } else {
+            iArr[0] = 0;
+        }
+        if (abstractC0238q0.e()) {
+            iArr[1] = c(view, g(abstractC0238q0));
+            return iArr;
+        }
+        iArr[1] = 0;
+        return iArr;
+    }
+
+    public View e(AbstractC0238q0 abstractC0238q0) {
+        if (abstractC0238q0.e()) {
+            return d(abstractC0238q0, g(abstractC0238q0));
+        }
+        if (abstractC0238q0.d()) {
+            return d(abstractC0238q0, f(abstractC0238q0));
+        }
+        return null;
+    }
+
+    public final AbstractC0208b0 f(AbstractC0238q0 abstractC0238q0) {
+        C0206a0 c0206a0 = this.f3805d;
+        if (c0206a0 == null || ((AbstractC0238q0) c0206a0.f3794b) != abstractC0238q0) {
+            this.f3805d = new C0206a0(abstractC0238q0, 0);
+        }
+        return this.f3805d;
+    }
+
+    public final AbstractC0208b0 g(AbstractC0238q0 abstractC0238q0) {
+        C0206a0 c0206a0 = this.f3804c;
+        if (c0206a0 == null || ((AbstractC0238q0) c0206a0.f3794b) != abstractC0238q0) {
+            this.f3804c = new C0206a0(abstractC0238q0, 1);
+        }
+        return this.f3804c;
+    }
+
+    public final void h() {
+        AbstractC0238q0 layoutManager;
+        View e4;
+        RecyclerView recyclerView = this.f3802a;
+        if (recyclerView == null || (layoutManager = recyclerView.getLayoutManager()) == null || (e4 = e(layoutManager)) == null) {
+            return;
+        }
+        int[] b4 = b(layoutManager, e4);
+        int i = b4[0];
+        if (i == 0 && b4[1] == 0) {
+            return;
+        }
+        this.f3802a.l0(i, b4[1], false);
+    }
+}