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/datastore/preferences/protobuf/j0.java

@@ -0,0 +1,176 @@
+package androidx.datastore.preferences.protobuf;
+
+import java.util.Arrays;
+
+/* loaded from: classes.dex */
+public final class j0 {
+
+    /* renamed from: f, reason: collision with root package name */
+    public static final j0 f2935f = new j0(0, new int[0], new Object[0], false);
+
+    /* renamed from: a, reason: collision with root package name */
+    public int f2936a;
+
+    /* renamed from: b, reason: collision with root package name */
+    public int[] f2937b;
+
+    /* renamed from: c, reason: collision with root package name */
+    public Object[] f2938c;
+
+    /* renamed from: d, reason: collision with root package name */
+    public int f2939d = -1;
+
+    /* renamed from: e, reason: collision with root package name */
+    public boolean f2940e;
+
+    public j0(int i, int[] iArr, Object[] objArr, boolean z3) {
+        this.f2936a = i;
+        this.f2937b = iArr;
+        this.f2938c = objArr;
+        this.f2940e = z3;
+    }
+
+    public static j0 b() {
+        return new j0(0, new int[8], new Object[8], true);
+    }
+
+    public final int a() {
+        int y3;
+        int A3;
+        int u3;
+        int i = this.f2939d;
+        if (i != -1) {
+            return i;
+        }
+        int i4 = 0;
+        for (int i5 = 0; i5 < this.f2936a; i5++) {
+            int i6 = this.f2937b[i5];
+            int i7 = i6 >>> 3;
+            int i8 = i6 & 7;
+            if (i8 != 0) {
+                if (i8 == 1) {
+                    ((Long) this.f2938c[i5]).getClass();
+                    u3 = C0119j.u(i7);
+                } else if (i8 == 2) {
+                    u3 = C0119j.r(i7, (C0116g) this.f2938c[i5]);
+                } else if (i8 == 3) {
+                    y3 = C0119j.y(i7) * 2;
+                    A3 = ((j0) this.f2938c[i5]).a();
+                } else {
+                    if (i8 != 5) {
+                        throw new IllegalStateException(A.b());
+                    }
+                    ((Integer) this.f2938c[i5]).getClass();
+                    u3 = C0119j.t(i7);
+                }
+                i4 = u3 + i4;
+            } else {
+                long longValue = ((Long) this.f2938c[i5]).longValue();
+                y3 = C0119j.y(i7);
+                A3 = C0119j.A(longValue);
+            }
+            i4 = A3 + y3 + i4;
+        }
+        this.f2939d = i4;
+        return i4;
+    }
+
+    public final void c(int i, Object obj) {
+        if (!this.f2940e) {
+            throw new UnsupportedOperationException();
+        }
+        int i4 = this.f2936a;
+        int[] iArr = this.f2937b;
+        if (i4 == iArr.length) {
+            int i5 = i4 + (i4 < 4 ? 8 : i4 >> 1);
+            this.f2937b = Arrays.copyOf(iArr, i5);
+            this.f2938c = Arrays.copyOf(this.f2938c, i5);
+        }
+        int[] iArr2 = this.f2937b;
+        int i6 = this.f2936a;
+        iArr2[i6] = i;
+        this.f2938c[i6] = obj;
+        this.f2936a = i6 + 1;
+    }
+
+    public final void d(J j4) {
+        if (this.f2936a == 0) {
+            return;
+        }
+        j4.getClass();
+        for (int i = 0; i < this.f2936a; i++) {
+            int i4 = this.f2937b[i];
+            Object obj = this.f2938c[i];
+            int i5 = i4 >>> 3;
+            int i6 = i4 & 7;
+            C0119j c0119j = (C0119j) j4.f2852a;
+            if (i6 == 0) {
+                c0119j.U(i5, ((Long) obj).longValue());
+            } else if (i6 == 1) {
+                c0119j.K(i5, ((Long) obj).longValue());
+            } else if (i6 == 2) {
+                j4.a(i5, (C0116g) obj);
+            } else if (i6 == 3) {
+                c0119j.R(i5, 3);
+                ((j0) obj).d(j4);
+                c0119j.R(i5, 4);
+            } else {
+                if (i6 != 5) {
+                    throw new RuntimeException(A.b());
+                }
+                c0119j.I(i5, ((Integer) obj).intValue());
+            }
+        }
+    }
+
+    public final boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null || !(obj instanceof j0)) {
+            return false;
+        }
+        j0 j0Var = (j0) obj;
+        int i = this.f2936a;
+        if (i == j0Var.f2936a) {
+            int[] iArr = this.f2937b;
+            int[] iArr2 = j0Var.f2937b;
+            int i4 = 0;
+            while (true) {
+                if (i4 >= i) {
+                    Object[] objArr = this.f2938c;
+                    Object[] objArr2 = j0Var.f2938c;
+                    int i5 = this.f2936a;
+                    for (int i6 = 0; i6 < i5; i6++) {
+                        if (objArr[i6].equals(objArr2[i6])) {
+                        }
+                    }
+                    return true;
+                }
+                if (iArr[i4] != iArr2[i4]) {
+                    break;
+                }
+                i4++;
+            }
+        }
+        return false;
+    }
+
+    public final int hashCode() {
+        int i = this.f2936a;
+        int i4 = (527 + i) * 31;
+        int[] iArr = this.f2937b;
+        int i5 = 17;
+        int i6 = 17;
+        for (int i7 = 0; i7 < i; i7++) {
+            i6 = (i6 * 31) + iArr[i7];
+        }
+        int i8 = (i4 + i6) * 31;
+        Object[] objArr = this.f2938c;
+        int i9 = this.f2936a;
+        for (int i10 = 0; i10 < i9; i10++) {
+            i5 = (i5 * 31) + objArr[i10].hashCode();
+        }
+        return i8 + i5;
+    }
+}