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/SequencesKt__SequencesKt$flatMapIndexed$1.java

@@ -0,0 +1,92 @@
+package kotlin.sequences;
+
+import com.google.firebase.analytics.FirebaseAnalytics;
+import java.util.Iterator;
+import kotlin.Metadata;
+import kotlin.ResultKt;
+import kotlin.Unit;
+import kotlin.collections.CollectionsKt;
+import kotlin.coroutines.Continuation;
+import kotlin.coroutines.intrinsics.IntrinsicsKt;
+import kotlin.coroutines.jvm.internal.Boxing;
+import kotlin.coroutines.jvm.internal.DebugMetadata;
+import kotlin.coroutines.jvm.internal.RestrictedSuspendLambda;
+import kotlin.jvm.functions.Function1;
+import kotlin.jvm.functions.Function2;
+
+/* JADX INFO: Add missing generic type declarations: [R] */
+@Metadata(d1 = {"\u0000\u000e\n\u0000\n\u0002\u0010\u0002\n\u0002\b\u0003\n\u0002\u0018\u0002\u0010\u0000\u001a\u00020\u0001\"\u0004\b\u0000\u0010\u0002\"\u0004\b\u0001\u0010\u0003\"\u0004\b\u0002\u0010\u0004*\b\u0012\u0004\u0012\u0002H\u00040\u0005H\u008a@"}, d2 = {"<anonymous>", "", "T", "C", "R", "Lkotlin/sequences/SequenceScope;"}, k = 3, mv = {1, 9, 0}, xi = 48)
+@DebugMetadata(c = "kotlin.sequences.SequencesKt__SequencesKt$flatMapIndexed$1", f = "Sequences.kt", i = {0, 0}, l = {332}, m = "invokeSuspend", n = {"$this$sequence", FirebaseAnalytics.Param.INDEX}, s = {"L$0", "I$0"})
+/* loaded from: classes3.dex */
+public final class SequencesKt__SequencesKt$flatMapIndexed$1<R> extends RestrictedSuspendLambda implements Function2<SequenceScope<? super R>, Continuation<? super Unit>, Object> {
+    final /* synthetic */ Function1<C, Iterator<R>> $iterator;
+    final /* synthetic */ Sequence<T> $source;
+    final /* synthetic */ Function2<Integer, T, C> $transform;
+    int I$0;
+    private /* synthetic */ Object L$0;
+    Object L$1;
+    int label;
+
+    /* JADX WARN: 'super' call moved to the top of the method (can break code semantics) */
+    /* JADX WARN: Multi-variable type inference failed */
+    public SequencesKt__SequencesKt$flatMapIndexed$1(Sequence<? extends T> sequence, Function2<? super Integer, ? super T, ? extends C> function2, Function1<? super C, ? extends Iterator<? extends R>> function1, Continuation<? super SequencesKt__SequencesKt$flatMapIndexed$1> continuation) {
+        super(2, continuation);
+        this.$source = sequence;
+        this.$transform = function2;
+        this.$iterator = function1;
+    }
+
+    @Override // kotlin.coroutines.jvm.internal.BaseContinuationImpl
+    public final Continuation<Unit> create(Object obj, Continuation<?> continuation) {
+        SequencesKt__SequencesKt$flatMapIndexed$1 sequencesKt__SequencesKt$flatMapIndexed$1 = new SequencesKt__SequencesKt$flatMapIndexed$1(this.$source, this.$transform, this.$iterator, continuation);
+        sequencesKt__SequencesKt$flatMapIndexed$1.L$0 = obj;
+        return sequencesKt__SequencesKt$flatMapIndexed$1;
+    }
+
+    @Override // kotlin.coroutines.jvm.internal.BaseContinuationImpl
+    public final Object invokeSuspend(Object obj) {
+        SequenceScope sequenceScope;
+        int i;
+        Iterator it;
+        Object coroutine_suspended = IntrinsicsKt.getCOROUTINE_SUSPENDED();
+        int i4 = this.label;
+        if (i4 == 0) {
+            ResultKt.throwOnFailure(obj);
+            sequenceScope = (SequenceScope) this.L$0;
+            i = 0;
+            it = this.$source.iterator();
+        } else {
+            if (i4 != 1) {
+                throw new IllegalStateException("call to 'resume' before 'invoke' with coroutine");
+            }
+            int i5 = this.I$0;
+            it = (Iterator) this.L$1;
+            sequenceScope = (SequenceScope) this.L$0;
+            ResultKt.throwOnFailure(obj);
+            i = i5;
+        }
+        while (it.hasNext()) {
+            Object next = it.next();
+            Function2<Integer, T, C> function2 = this.$transform;
+            int i6 = i + 1;
+            if (i < 0) {
+                CollectionsKt.throwIndexOverflow();
+            }
+            Iterator<R> invoke = this.$iterator.invoke(function2.invoke(Boxing.boxInt(i), next));
+            this.L$0 = sequenceScope;
+            this.L$1 = it;
+            this.I$0 = i6;
+            this.label = 1;
+            if (sequenceScope.yieldAll(invoke, this) == coroutine_suspended) {
+                return coroutine_suspended;
+            }
+            i = i6;
+        }
+        return Unit.INSTANCE;
+    }
+
+    @Override // kotlin.jvm.functions.Function2
+    public final Object invoke(SequenceScope<? super R> sequenceScope, Continuation<? super Unit> continuation) {
+        return ((SequencesKt__SequencesKt$flatMapIndexed$1) create(sequenceScope, continuation)).invokeSuspend(Unit.INSTANCE);
+    }
+}