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/C0219h.java

@@ -0,0 +1,58 @@
+package androidx.recyclerview.widget;
+
+/* renamed from: androidx.recyclerview.widget.h, reason: case insensitive filesystem */
+/* loaded from: classes.dex */
+public final class C0219h {
+
+    /* renamed from: a, reason: collision with root package name */
+    public final C0209c f3819a;
+
+    /* renamed from: b, reason: collision with root package name */
+    public int f3820b = 0;
+
+    /* renamed from: c, reason: collision with root package name */
+    public int f3821c = -1;
+
+    /* renamed from: d, reason: collision with root package name */
+    public int f3822d = -1;
+
+    public C0219h(C0209c c0209c) {
+        this.f3819a = c0209c;
+    }
+
+    public final void a() {
+        int i = this.f3820b;
+        if (i == 0) {
+            return;
+        }
+        C0209c c0209c = this.f3819a;
+        if (i == 1) {
+            c0209c.d(this.f3821c, this.f3822d);
+        } else if (i == 2) {
+            c0209c.e(this.f3821c, this.f3822d);
+        } else if (i == 3) {
+            ((Z) c0209c.f3796a).notifyItemRangeChanged(this.f3821c, this.f3822d, null);
+        }
+        this.f3820b = 0;
+    }
+
+    public final void b(int i, int i4) {
+        int i5;
+        int i6;
+        int i7;
+        if (this.f3820b == 3 && i <= (i6 = this.f3822d + (i5 = this.f3821c)) && (i7 = i + i4) >= i5) {
+            this.f3821c = Math.min(i, i5);
+            this.f3822d = Math.max(i6, i7) - this.f3821c;
+        } else {
+            a();
+            this.f3821c = i;
+            this.f3822d = i4;
+            this.f3820b = 3;
+        }
+    }
+
+    public final void c(int i, int i4) {
+        a();
+        ((Z) this.f3819a.f3796a).notifyItemMoved(i, i4);
+    }
+}