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/E0.java

@@ -0,0 +1,58 @@
+package androidx.recyclerview.widget;
+
+/* loaded from: classes.dex */
+public final class E0 {
+
+    /* renamed from: a, reason: collision with root package name */
+    public int f3509a;
+
+    /* renamed from: b, reason: collision with root package name */
+    public int f3510b;
+
+    /* renamed from: c, reason: collision with root package name */
+    public int f3511c;
+
+    /* renamed from: d, reason: collision with root package name */
+    public int f3512d;
+
+    /* renamed from: e, reason: collision with root package name */
+    public int f3513e;
+
+    /* renamed from: f, reason: collision with root package name */
+    public boolean f3514f;
+
+    /* renamed from: g, reason: collision with root package name */
+    public boolean f3515g;
+    public boolean h;
+    public boolean i;
+
+    /* renamed from: j, reason: collision with root package name */
+    public boolean f3516j;
+
+    /* renamed from: k, reason: collision with root package name */
+    public boolean f3517k;
+
+    /* renamed from: l, reason: collision with root package name */
+    public int f3518l;
+
+    /* renamed from: m, reason: collision with root package name */
+    public long f3519m;
+
+    /* renamed from: n, reason: collision with root package name */
+    public int f3520n;
+
+    public final void a(int i) {
+        if ((this.f3512d & i) != 0) {
+            return;
+        }
+        throw new IllegalStateException("Layout state should be one of " + Integer.toBinaryString(i) + " but it is " + Integer.toBinaryString(this.f3512d));
+    }
+
+    public final int b() {
+        return this.f3515g ? this.f3510b - this.f3511c : this.f3513e;
+    }
+
+    public final String toString() {
+        return "State{mTargetPosition=" + this.f3509a + ", mData=null, mItemCount=" + this.f3513e + ", mIsMeasuring=" + this.i + ", mPreviousLayoutItemCount=" + this.f3510b + ", mDeletedInvisibleItemCountSincePreviousLayout=" + this.f3511c + ", mStructureChanged=" + this.f3514f + ", mInPreLayout=" + this.f3515g + ", mRunSimpleAnimations=" + this.f3516j + ", mRunPredictiveAnimations=" + this.f3517k + '}';
+    }
+}