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/r/C0564a.java

@@ -0,0 +1,164 @@
+package r;
+
+import android.content.res.ColorStateList;
+import android.graphics.Canvas;
+import android.graphics.ColorFilter;
+import android.graphics.Outline;
+import android.graphics.Paint;
+import android.graphics.PorterDuff;
+import android.graphics.PorterDuffColorFilter;
+import android.graphics.Rect;
+import android.graphics.RectF;
+import android.graphics.drawable.Drawable;
+
+/* renamed from: r.a, reason: case insensitive filesystem */
+/* loaded from: classes.dex */
+public final class C0564a extends Drawable {
+
+    /* renamed from: a, reason: collision with root package name */
+    public float f8193a;
+
+    /* renamed from: b, reason: collision with root package name */
+    public final Paint f8194b;
+
+    /* renamed from: c, reason: collision with root package name */
+    public final RectF f8195c;
+
+    /* renamed from: d, reason: collision with root package name */
+    public final Rect f8196d;
+
+    /* renamed from: e, reason: collision with root package name */
+    public float f8197e;
+    public ColorStateList h;
+    public PorterDuffColorFilter i;
+
+    /* renamed from: j, reason: collision with root package name */
+    public ColorStateList f8200j;
+
+    /* renamed from: f, reason: collision with root package name */
+    public boolean f8198f = false;
+
+    /* renamed from: g, reason: collision with root package name */
+    public boolean f8199g = true;
+
+    /* renamed from: k, reason: collision with root package name */
+    public PorterDuff.Mode f8201k = PorterDuff.Mode.SRC_IN;
+
+    public C0564a(ColorStateList colorStateList, float f2) {
+        this.f8193a = f2;
+        Paint paint = new Paint(5);
+        this.f8194b = paint;
+        colorStateList = colorStateList == null ? ColorStateList.valueOf(0) : colorStateList;
+        this.h = colorStateList;
+        paint.setColor(colorStateList.getColorForState(getState(), this.h.getDefaultColor()));
+        this.f8195c = new RectF();
+        this.f8196d = new Rect();
+    }
+
+    public final PorterDuffColorFilter a(ColorStateList colorStateList, PorterDuff.Mode mode) {
+        if (colorStateList == null || mode == null) {
+            return null;
+        }
+        return new PorterDuffColorFilter(colorStateList.getColorForState(getState(), 0), mode);
+    }
+
+    public final void b(Rect rect) {
+        if (rect == null) {
+            rect = getBounds();
+        }
+        RectF rectF = this.f8195c;
+        rectF.set(rect.left, rect.top, rect.right, rect.bottom);
+        Rect rect2 = this.f8196d;
+        rect2.set(rect);
+        if (this.f8198f) {
+            rect2.inset((int) Math.ceil(b.a(this.f8197e, this.f8193a, this.f8199g)), (int) Math.ceil(b.b(this.f8197e, this.f8193a, this.f8199g)));
+            rectF.set(rect2);
+        }
+    }
+
+    @Override // android.graphics.drawable.Drawable
+    public final void draw(Canvas canvas) {
+        boolean z3;
+        Paint paint = this.f8194b;
+        if (this.i == null || paint.getColorFilter() != null) {
+            z3 = false;
+        } else {
+            paint.setColorFilter(this.i);
+            z3 = true;
+        }
+        RectF rectF = this.f8195c;
+        float f2 = this.f8193a;
+        canvas.drawRoundRect(rectF, f2, f2, paint);
+        if (z3) {
+            paint.setColorFilter(null);
+        }
+    }
+
+    @Override // android.graphics.drawable.Drawable
+    public final int getOpacity() {
+        return -3;
+    }
+
+    @Override // android.graphics.drawable.Drawable
+    public final void getOutline(Outline outline) {
+        outline.setRoundRect(this.f8196d, this.f8193a);
+    }
+
+    @Override // android.graphics.drawable.Drawable
+    public final boolean isStateful() {
+        ColorStateList colorStateList = this.f8200j;
+        if (colorStateList != null && colorStateList.isStateful()) {
+            return true;
+        }
+        ColorStateList colorStateList2 = this.h;
+        return (colorStateList2 != null && colorStateList2.isStateful()) || super.isStateful();
+    }
+
+    @Override // android.graphics.drawable.Drawable
+    public final void onBoundsChange(Rect rect) {
+        super.onBoundsChange(rect);
+        b(rect);
+    }
+
+    @Override // android.graphics.drawable.Drawable
+    public final boolean onStateChange(int[] iArr) {
+        PorterDuff.Mode mode;
+        ColorStateList colorStateList = this.h;
+        int colorForState = colorStateList.getColorForState(iArr, colorStateList.getDefaultColor());
+        Paint paint = this.f8194b;
+        boolean z3 = colorForState != paint.getColor();
+        if (z3) {
+            paint.setColor(colorForState);
+        }
+        ColorStateList colorStateList2 = this.f8200j;
+        if (colorStateList2 == null || (mode = this.f8201k) == null) {
+            return z3;
+        }
+        this.i = a(colorStateList2, mode);
+        return true;
+    }
+
+    @Override // android.graphics.drawable.Drawable
+    public final void setAlpha(int i) {
+        this.f8194b.setAlpha(i);
+    }
+
+    @Override // android.graphics.drawable.Drawable
+    public final void setColorFilter(ColorFilter colorFilter) {
+        this.f8194b.setColorFilter(colorFilter);
+    }
+
+    @Override // android.graphics.drawable.Drawable
+    public final void setTintList(ColorStateList colorStateList) {
+        this.f8200j = colorStateList;
+        this.i = a(colorStateList, this.f8201k);
+        invalidateSelf();
+    }
+
+    @Override // android.graphics.drawable.Drawable
+    public final void setTintMode(PorterDuff.Mode mode) {
+        this.f8201k = mode;
+        this.i = a(this.f8200j, mode);
+        invalidateSelf();
+    }
+}

apk_decompiled/sources/r/b.java

@@ -0,0 +1,24 @@
+package r;
+
+import android.graphics.drawable.Drawable;
+
+/* loaded from: classes.dex */
+public abstract class b extends Drawable {
+
+    /* renamed from: a, reason: collision with root package name */
+    public static final double f8202a = Math.cos(Math.toRadians(45.0d));
+
+    public static float a(float f2, float f4, boolean z3) {
+        if (!z3) {
+            return f2;
+        }
+        return (float) (((1.0d - f8202a) * f4) + f2);
+    }
+
+    public static float b(float f2, float f4, boolean z3) {
+        if (!z3) {
+            return f2 * 1.5f;
+        }
+        return (float) (((1.0d - f8202a) * f4) + (f2 * 1.5f));
+    }
+}