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/constraintlayout/widget/j.java

@@ -0,0 +1,103 @@
+package androidx.constraintlayout.widget;
+
+import java.util.Arrays;
+
+/* loaded from: classes.dex */
+public final class j {
+
+    /* renamed from: a, reason: collision with root package name */
+    public int[] f2639a;
+
+    /* renamed from: b, reason: collision with root package name */
+    public int[] f2640b;
+
+    /* renamed from: c, reason: collision with root package name */
+    public int f2641c;
+
+    /* renamed from: d, reason: collision with root package name */
+    public int[] f2642d;
+
+    /* renamed from: e, reason: collision with root package name */
+    public float[] f2643e;
+
+    /* renamed from: f, reason: collision with root package name */
+    public int f2644f;
+
+    /* renamed from: g, reason: collision with root package name */
+    public int[] f2645g;
+    public String[] h;
+    public int i;
+
+    /* renamed from: j, reason: collision with root package name */
+    public int[] f2646j;
+
+    /* renamed from: k, reason: collision with root package name */
+    public boolean[] f2647k;
+
+    /* renamed from: l, reason: collision with root package name */
+    public int f2648l;
+
+    public final void a(int i, float f2) {
+        int i4 = this.f2644f;
+        int[] iArr = this.f2642d;
+        if (i4 >= iArr.length) {
+            this.f2642d = Arrays.copyOf(iArr, iArr.length * 2);
+            float[] fArr = this.f2643e;
+            this.f2643e = Arrays.copyOf(fArr, fArr.length * 2);
+        }
+        int[] iArr2 = this.f2642d;
+        int i5 = this.f2644f;
+        iArr2[i5] = i;
+        float[] fArr2 = this.f2643e;
+        this.f2644f = i5 + 1;
+        fArr2[i5] = f2;
+    }
+
+    public final void b(int i, int i4) {
+        int i5 = this.f2641c;
+        int[] iArr = this.f2639a;
+        if (i5 >= iArr.length) {
+            this.f2639a = Arrays.copyOf(iArr, iArr.length * 2);
+            int[] iArr2 = this.f2640b;
+            this.f2640b = Arrays.copyOf(iArr2, iArr2.length * 2);
+        }
+        int[] iArr3 = this.f2639a;
+        int i6 = this.f2641c;
+        iArr3[i6] = i;
+        int[] iArr4 = this.f2640b;
+        this.f2641c = i6 + 1;
+        iArr4[i6] = i4;
+    }
+
+    public final void c(int i, String str) {
+        int i4 = this.i;
+        int[] iArr = this.f2645g;
+        if (i4 >= iArr.length) {
+            this.f2645g = Arrays.copyOf(iArr, iArr.length * 2);
+            String[] strArr = this.h;
+            this.h = (String[]) Arrays.copyOf(strArr, strArr.length * 2);
+        }
+        int[] iArr2 = this.f2645g;
+        int i5 = this.i;
+        iArr2[i5] = i;
+        String[] strArr2 = this.h;
+        this.i = i5 + 1;
+        strArr2[i5] = str;
+    }
+
+    public final void d(int i, boolean z3) {
+        int i4 = this.f2648l;
+        int[] iArr = this.f2646j;
+        if (i4 >= iArr.length) {
+            this.f2646j = Arrays.copyOf(iArr, iArr.length * 2);
+            boolean[] zArr = this.f2647k;
+            this.f2647k = Arrays.copyOf(zArr, zArr.length * 2);
+        }
+        int[] iArr2 = this.f2646j;
+        int i5 = this.f2648l;
+        iArr2[i5] = i;
+        boolean[] zArr2 = this.f2647k;
+        this.f2648l = i5 + 1;
+        zArr2[i5] = z3;
+    }
+}