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/kotlin/sequences/SubSequence$iterator$1.java

@@ -0,0 +1,89 @@
+package kotlin.sequences;
+
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+import kotlin.Metadata;
+import kotlin.jvm.internal.markers.KMappedMarker;
+
+/* JADX INFO: Add missing generic type declarations: [T] */
+@Metadata(d1 = {"\u0000#\n\u0000\n\u0002\u0010(\n\u0002\b\u0004\n\u0002\u0010\b\n\u0002\b\u0005\n\u0002\u0010\u0002\n\u0000\n\u0002\u0010\u000b\n\u0002\b\u0003*\u0001\u0000\b\n\u0018\u00002\b\u0012\u0004\u0012\u00028\u00000\u0001J\b\u0010\u000b\u001a\u00020\fH\u0002J\t\u0010\r\u001a\u00020\u000eH\u0096\u0002J\u000e\u0010\u000f\u001a\u00028\u0000H\u0096\u0002¢\u0006\u0002\u0010\u0010R\u0017\u0010\u0002\u001a\b\u0012\u0004\u0012\u00028\u00000\u0001¢\u0006\b\n\u0000\u001a\u0004\b\u0003\u0010\u0004R\u001a\u0010\u0005\u001a\u00020\u0006X\u0086\u000e¢\u0006\u000e\n\u0000\u001a\u0004\b\u0007\u0010\b\"\u0004\b\t\u0010\n¨\u0006\u0011"}, d2 = {"kotlin/sequences/SubSequence$iterator$1", "", "iterator", "getIterator", "()Ljava/util/Iterator;", "position", "", "getPosition", "()I", "setPosition", "(I)V", "drop", "", "hasNext", "", "next", "()Ljava/lang/Object;", "kotlin-stdlib"}, k = 1, mv = {1, 9, 0}, xi = 48)
+/* loaded from: classes3.dex */
+public final class SubSequence$iterator$1<T> implements Iterator<T>, KMappedMarker {
+    private final Iterator<T> iterator;
+    private int position;
+    final /* synthetic */ SubSequence<T> this$0;
+
+    public SubSequence$iterator$1(SubSequence<T> subSequence) {
+        Sequence sequence;
+        this.this$0 = subSequence;
+        sequence = ((SubSequence) subSequence).sequence;
+        this.iterator = sequence.iterator();
+    }
+
+    /* JADX WARN: Incorrect condition in loop: B:2:0x0008 */
+    /*
+        Code decompiled incorrectly, please refer to instructions dump.
+        To view partially-correct add '--show-bad-code' argument
+    */
+    private final void drop() {
+        /*
+            r2 = this;
+        L0:
+            int r0 = r2.position
+            kotlin.sequences.SubSequence<T> r1 = r2.this$0
+            int r1 = kotlin.sequences.SubSequence.access$getStartIndex$p(r1)
+            if (r0 >= r1) goto L1e
+            java.util.Iterator<T> r0 = r2.iterator
+            boolean r0 = r0.hasNext()
+            if (r0 == 0) goto L1e
+            java.util.Iterator<T> r0 = r2.iterator
+            r0.next()
+            int r0 = r2.position
+            int r0 = r0 + 1
+            r2.position = r0
+            goto L0
+        L1e:
+            return
+        */
+        throw new UnsupportedOperationException("Method not decompiled: kotlin.sequences.SubSequence$iterator$1.drop():void");
+    }
+
+    public final Iterator<T> getIterator() {
+        return this.iterator;
+    }
+
+    public final int getPosition() {
+        return this.position;
+    }
+
+    @Override // java.util.Iterator
+    public boolean hasNext() {
+        int i;
+        drop();
+        int i4 = this.position;
+        i = ((SubSequence) this.this$0).endIndex;
+        return i4 < i && this.iterator.hasNext();
+    }
+
+    @Override // java.util.Iterator
+    public T next() {
+        int i;
+        drop();
+        int i4 = this.position;
+        i = ((SubSequence) this.this$0).endIndex;
+        if (i4 >= i) {
+            throw new NoSuchElementException();
+        }
+        this.position++;
+        return this.iterator.next();
+    }
+
+    @Override // java.util.Iterator
+    public void remove() {
+        throw new UnsupportedOperationException("Operation is not supported for read-only collection");
+    }
+
+    public final void setPosition(int i) {
+        this.position = i;
+    }
+}