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/streams/jdk8/StreamsKt.java

@@ -0,0 +1,129 @@
+package kotlin.streams.jdk8;
+
+import java.util.Iterator;
+import java.util.List;
+import java.util.Spliterator;
+import java.util.Spliterators;
+import java.util.function.Supplier;
+import java.util.stream.Collectors;
+import java.util.stream.DoubleStream;
+import java.util.stream.IntStream;
+import java.util.stream.LongStream;
+import java.util.stream.Stream;
+import java.util.stream.StreamSupport;
+import kotlin.Metadata;
+import kotlin.SinceKotlin;
+import kotlin.collections.ArraysKt;
+import kotlin.jvm.JvmName;
+import kotlin.jvm.internal.Intrinsics;
+import kotlin.sequences.Sequence;
+
+@Metadata(d1 = {"\u0000.\n\u0000\n\u0002\u0018\u0002\n\u0002\u0010\u0006\n\u0002\u0018\u0002\n\u0002\u0010\b\n\u0002\u0018\u0002\n\u0002\u0010\t\n\u0002\u0018\u0002\n\u0000\n\u0002\u0018\u0002\n\u0002\b\u0002\n\u0002\u0010 \n\u0000\u001a\u0012\u0010\u0000\u001a\b\u0012\u0004\u0012\u00020\u00020\u0001*\u00020\u0003H\u0007\u001a\u0012\u0010\u0000\u001a\b\u0012\u0004\u0012\u00020\u00040\u0001*\u00020\u0005H\u0007\u001a\u0012\u0010\u0000\u001a\b\u0012\u0004\u0012\u00020\u00060\u0001*\u00020\u0007H\u0007\u001a\u001e\u0010\u0000\u001a\b\u0012\u0004\u0012\u0002H\b0\u0001\"\u0004\b\u0000\u0010\b*\b\u0012\u0004\u0012\u0002H\b0\tH\u0007\u001a\u001e\u0010\n\u001a\b\u0012\u0004\u0012\u0002H\b0\t\"\u0004\b\u0000\u0010\b*\b\u0012\u0004\u0012\u0002H\b0\u0001H\u0007\u001a\u0012\u0010\u000b\u001a\b\u0012\u0004\u0012\u00020\u00020\f*\u00020\u0003H\u0007\u001a\u0012\u0010\u000b\u001a\b\u0012\u0004\u0012\u00020\u00040\f*\u00020\u0005H\u0007\u001a\u0012\u0010\u000b\u001a\b\u0012\u0004\u0012\u00020\u00060\f*\u00020\u0007H\u0007\u001a\u001e\u0010\u000b\u001a\b\u0012\u0004\u0012\u0002H\b0\f\"\u0004\b\u0000\u0010\b*\b\u0012\u0004\u0012\u0002H\b0\tH\u0007¨\u0006\r"}, d2 = {"asSequence", "Lkotlin/sequences/Sequence;", "", "Ljava/util/stream/DoubleStream;", "", "Ljava/util/stream/IntStream;", "", "Ljava/util/stream/LongStream;", "T", "Ljava/util/stream/Stream;", "asStream", "toList", "", "kotlin-stdlib-jdk8"}, k = 2, mv = {1, 9, 0}, pn = "kotlin.streams", xi = 48)
+@JvmName(name = "StreamsKt")
+/* loaded from: classes3.dex */
+public final class StreamsKt {
+    @SinceKotlin(version = "1.2")
+    public static final <T> Sequence<T> asSequence(final Stream<T> stream) {
+        Intrinsics.checkNotNullParameter(stream, "<this>");
+        return new Sequence<T>() { // from class: kotlin.streams.jdk8.StreamsKt$asSequence$$inlined$Sequence$1
+            @Override // kotlin.sequences.Sequence
+            public Iterator<T> iterator() {
+                Iterator<T> it = stream.iterator();
+                Intrinsics.checkNotNullExpressionValue(it, "iterator(...)");
+                return it;
+            }
+        };
+    }
+
+    @SinceKotlin(version = "1.2")
+    public static final <T> Stream<T> asStream(final Sequence<? extends T> sequence) {
+        Intrinsics.checkNotNullParameter(sequence, "<this>");
+        Stream<T> stream = StreamSupport.stream(new Supplier() { // from class: kotlin.streams.jdk8.a
+            @Override // java.util.function.Supplier
+            public final Object get() {
+                Spliterator asStream$lambda$4;
+                asStream$lambda$4 = StreamsKt.asStream$lambda$4(Sequence.this);
+                return asStream$lambda$4;
+            }
+        }, 16, false);
+        Intrinsics.checkNotNullExpressionValue(stream, "stream(...)");
+        return stream;
+    }
+
+    /* JADX INFO: Access modifiers changed from: private */
+    public static final Spliterator asStream$lambda$4(Sequence this_asStream) {
+        Intrinsics.checkNotNullParameter(this_asStream, "$this_asStream");
+        return Spliterators.spliteratorUnknownSize(this_asStream.iterator(), 16);
+    }
+
+    @SinceKotlin(version = "1.2")
+    public static final <T> List<T> toList(Stream<T> stream) {
+        Intrinsics.checkNotNullParameter(stream, "<this>");
+        Object collect = stream.collect(Collectors.toList());
+        Intrinsics.checkNotNullExpressionValue(collect, "collect(...)");
+        return (List) collect;
+    }
+
+    @SinceKotlin(version = "1.2")
+    public static final Sequence<Integer> asSequence(final IntStream intStream) {
+        Intrinsics.checkNotNullParameter(intStream, "<this>");
+        return new Sequence<Integer>() { // from class: kotlin.streams.jdk8.StreamsKt$asSequence$$inlined$Sequence$2
+            @Override // kotlin.sequences.Sequence
+            public Iterator<Integer> iterator() {
+                Iterator<Integer> it = intStream.iterator();
+                Intrinsics.checkNotNullExpressionValue(it, "iterator(...)");
+                return it;
+            }
+        };
+    }
+
+    @SinceKotlin(version = "1.2")
+    public static final List<Integer> toList(IntStream intStream) {
+        Intrinsics.checkNotNullParameter(intStream, "<this>");
+        int[] array = intStream.toArray();
+        Intrinsics.checkNotNullExpressionValue(array, "toArray(...)");
+        return ArraysKt.asList(array);
+    }
+
+    @SinceKotlin(version = "1.2")
+    public static final Sequence<Long> asSequence(final LongStream longStream) {
+        Intrinsics.checkNotNullParameter(longStream, "<this>");
+        return new Sequence<Long>() { // from class: kotlin.streams.jdk8.StreamsKt$asSequence$$inlined$Sequence$3
+            @Override // kotlin.sequences.Sequence
+            public Iterator<Long> iterator() {
+                Iterator<Long> it = longStream.iterator();
+                Intrinsics.checkNotNullExpressionValue(it, "iterator(...)");
+                return it;
+            }
+        };
+    }
+
+    @SinceKotlin(version = "1.2")
+    public static final List<Long> toList(LongStream longStream) {
+        Intrinsics.checkNotNullParameter(longStream, "<this>");
+        long[] array = longStream.toArray();
+        Intrinsics.checkNotNullExpressionValue(array, "toArray(...)");
+        return ArraysKt.asList(array);
+    }
+
+    @SinceKotlin(version = "1.2")
+    public static final Sequence<Double> asSequence(final DoubleStream doubleStream) {
+        Intrinsics.checkNotNullParameter(doubleStream, "<this>");
+        return new Sequence<Double>() { // from class: kotlin.streams.jdk8.StreamsKt$asSequence$$inlined$Sequence$4
+            @Override // kotlin.sequences.Sequence
+            public Iterator<Double> iterator() {
+                Iterator<Double> it = doubleStream.iterator();
+                Intrinsics.checkNotNullExpressionValue(it, "iterator(...)");
+                return it;
+            }
+        };
+    }
+
+    @SinceKotlin(version = "1.2")
+    public static final List<Double> toList(DoubleStream doubleStream) {
+        Intrinsics.checkNotNullParameter(doubleStream, "<this>");
+        double[] array = doubleStream.toArray();
+        Intrinsics.checkNotNullExpressionValue(array, "toArray(...)");
+        return ArraysKt.asList(array);
+    }
+}