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$ifEmpty$1.java

@@ -0,0 +1,104 @@
+package kotlin.sequences;
+
+import kotlin.Metadata;
+import kotlin.Unit;
+import kotlin.coroutines.Continuation;
+import kotlin.coroutines.jvm.internal.DebugMetadata;
+import kotlin.coroutines.jvm.internal.RestrictedSuspendLambda;
+import kotlin.jvm.functions.Function0;
+import kotlin.jvm.functions.Function2;
+
+/* JADX INFO: Add missing generic type declarations: [T] */
+@Metadata(d1 = {"\u0000\f\n\u0000\n\u0002\u0010\u0002\n\u0000\n\u0002\u0018\u0002\u0010\u0000\u001a\u00020\u0001\"\u0004\b\u0000\u0010\u0002*\b\u0012\u0004\u0012\u0002H\u00020\u0003H\u008a@"}, d2 = {"<anonymous>", "", "T", "Lkotlin/sequences/SequenceScope;"}, k = 3, mv = {1, 9, 0}, xi = 48)
+@DebugMetadata(c = "kotlin.sequences.SequencesKt__SequencesKt$ifEmpty$1", f = "Sequences.kt", i = {}, l = {69, 71}, m = "invokeSuspend", n = {}, s = {})
+/* loaded from: classes3.dex */
+public final class SequencesKt__SequencesKt$ifEmpty$1<T> extends RestrictedSuspendLambda implements Function2<SequenceScope<? super T>, Continuation<? super Unit>, Object> {
+    final /* synthetic */ Function0<Sequence<T>> $defaultValue;
+    final /* synthetic */ Sequence<T> $this_ifEmpty;
+    private /* synthetic */ Object L$0;
+    int label;
+
+    /* JADX WARN: 'super' call moved to the top of the method (can break code semantics) */
+    /* JADX WARN: Multi-variable type inference failed */
+    public SequencesKt__SequencesKt$ifEmpty$1(Sequence<? extends T> sequence, Function0<? extends Sequence<? extends T>> function0, Continuation<? super SequencesKt__SequencesKt$ifEmpty$1> continuation) {
+        super(2, continuation);
+        this.$this_ifEmpty = sequence;
+        this.$defaultValue = function0;
+    }
+
+    @Override // kotlin.coroutines.jvm.internal.BaseContinuationImpl
+    public final Continuation<Unit> create(Object obj, Continuation<?> continuation) {
+        SequencesKt__SequencesKt$ifEmpty$1 sequencesKt__SequencesKt$ifEmpty$1 = new SequencesKt__SequencesKt$ifEmpty$1(this.$this_ifEmpty, this.$defaultValue, continuation);
+        sequencesKt__SequencesKt$ifEmpty$1.L$0 = obj;
+        return sequencesKt__SequencesKt$ifEmpty$1;
+    }
+
+    /* JADX WARN: Code restructure failed: missing block: B:14:0x0034, code lost:
+    
+        if (r6.yieldAll(r1, r5) == r0) goto L17;
+     */
+    /* JADX WARN: Code restructure failed: missing block: B:15:0x0047, code lost:
+    
+        return r0;
+     */
+    /* JADX WARN: Code restructure failed: missing block: B:17:0x0045, code lost:
+    
+        if (r6.yieldAll(r1, r5) == r0) goto L17;
+     */
+    @Override // kotlin.coroutines.jvm.internal.BaseContinuationImpl
+    /*
+        Code decompiled incorrectly, please refer to instructions dump.
+        To view partially-correct add '--show-bad-code' argument
+    */
+    public final java.lang.Object invokeSuspend(java.lang.Object r6) {
+        /*
+            r5 = this;
+            java.lang.Object r0 = kotlin.coroutines.intrinsics.IntrinsicsKt.getCOROUTINE_SUSPENDED()
+            int r1 = r5.label
+            r2 = 2
+            r3 = 1
+            if (r1 == 0) goto L1b
+            if (r1 == r3) goto L17
+            if (r1 != r2) goto Lf
+            goto L17
+        Lf:
+            java.lang.IllegalStateException r5 = new java.lang.IllegalStateException
+            java.lang.String r6 = "call to 'resume' before 'invoke' with coroutine"
+            r5.<init>(r6)
+            throw r5
+        L17:
+            kotlin.ResultKt.throwOnFailure(r6)
+            goto L48
+        L1b:
+            kotlin.ResultKt.throwOnFailure(r6)
+            java.lang.Object r6 = r5.L$0
+            kotlin.sequences.SequenceScope r6 = (kotlin.sequences.SequenceScope) r6
+            kotlin.sequences.Sequence<T> r1 = r5.$this_ifEmpty
+            java.util.Iterator r1 = r1.iterator()
+            boolean r4 = r1.hasNext()
+            if (r4 == 0) goto L37
+            r5.label = r3
+            java.lang.Object r5 = r6.yieldAll(r1, r5)
+            if (r5 != r0) goto L48
+            goto L47
+        L37:
+            kotlin.jvm.functions.Function0<kotlin.sequences.Sequence<T>> r1 = r5.$defaultValue
+            java.lang.Object r1 = r1.invoke()
+            kotlin.sequences.Sequence r1 = (kotlin.sequences.Sequence) r1
+            r5.label = r2
+            java.lang.Object r5 = r6.yieldAll(r1, r5)
+            if (r5 != r0) goto L48
+        L47:
+            return r0
+        L48:
+            kotlin.Unit r5 = kotlin.Unit.INSTANCE
+            return r5
+        */
+        throw new UnsupportedOperationException("Method not decompiled: kotlin.sequences.SequencesKt__SequencesKt$ifEmpty$1.invokeSuspend(java.lang.Object):java.lang.Object");
+    }
+
+    @Override // kotlin.jvm.functions.Function2
+    public final Object invoke(SequenceScope<? super T> sequenceScope, Continuation<? super Unit> continuation) {
+        return ((SequencesKt__SequencesKt$ifEmpty$1) create(sequenceScope, continuation)).invokeSuspend(Unit.INSTANCE);
+    }
+}