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/time/DurationUnitKt__DurationUnitJvmKt.java

@@ -0,0 +1,106 @@
+package kotlin.time;
+
+import java.util.concurrent.TimeUnit;
+import kotlin.Metadata;
+import kotlin.NoWhenBranchMatchedException;
+import kotlin.SinceKotlin;
+import kotlin.WasExperimental;
+import kotlin.jvm.internal.Intrinsics;
+
+/* JADX INFO: Access modifiers changed from: package-private */
+@Metadata(d1 = {"\u0000 \n\u0000\n\u0002\u0010\u0006\n\u0002\b\u0002\n\u0002\u0018\u0002\n\u0000\n\u0002\u0010\t\n\u0002\b\u0002\n\u0002\u0018\u0002\n\u0002\b\u0002\u001a \u0010\u0000\u001a\u00020\u00012\u0006\u0010\u0002\u001a\u00020\u00012\u0006\u0010\u0003\u001a\u00020\u00042\u0006\u0010\u0005\u001a\u00020\u0004H\u0001\u001a \u0010\u0000\u001a\u00020\u00062\u0006\u0010\u0002\u001a\u00020\u00062\u0006\u0010\u0003\u001a\u00020\u00042\u0006\u0010\u0005\u001a\u00020\u0004H\u0001\u001a \u0010\u0007\u001a\u00020\u00062\u0006\u0010\u0002\u001a\u00020\u00062\u0006\u0010\u0003\u001a\u00020\u00042\u0006\u0010\u0005\u001a\u00020\u0004H\u0001\u001a\f\u0010\b\u001a\u00020\u0004*\u00020\tH\u0007\u001a\f\u0010\n\u001a\u00020\t*\u00020\u0004H\u0007¨\u0006\u000b"}, d2 = {"convertDurationUnit", "", "value", "sourceUnit", "Lkotlin/time/DurationUnit;", "targetUnit", "", "convertDurationUnitOverflow", "toDurationUnit", "Ljava/util/concurrent/TimeUnit;", "toTimeUnit", "kotlin-stdlib"}, k = 5, mv = {1, 9, 0}, xi = 49, xs = "kotlin/time/DurationUnitKt")
+/* loaded from: classes3.dex */
+public class DurationUnitKt__DurationUnitJvmKt {
+
+    @Metadata(k = 3, mv = {1, 9, 0}, xi = 48)
+    /* loaded from: classes3.dex */
+    public /* synthetic */ class WhenMappings {
+        public static final /* synthetic */ int[] $EnumSwitchMapping$0;
+
+        static {
+            int[] iArr = new int[TimeUnit.values().length];
+            try {
+                iArr[TimeUnit.NANOSECONDS.ordinal()] = 1;
+            } catch (NoSuchFieldError unused) {
+            }
+            try {
+                iArr[TimeUnit.MICROSECONDS.ordinal()] = 2;
+            } catch (NoSuchFieldError unused2) {
+            }
+            try {
+                iArr[TimeUnit.MILLISECONDS.ordinal()] = 3;
+            } catch (NoSuchFieldError unused3) {
+            }
+            try {
+                iArr[TimeUnit.SECONDS.ordinal()] = 4;
+            } catch (NoSuchFieldError unused4) {
+            }
+            try {
+                iArr[TimeUnit.MINUTES.ordinal()] = 5;
+            } catch (NoSuchFieldError unused5) {
+            }
+            try {
+                iArr[TimeUnit.HOURS.ordinal()] = 6;
+            } catch (NoSuchFieldError unused6) {
+            }
+            try {
+                iArr[TimeUnit.DAYS.ordinal()] = 7;
+            } catch (NoSuchFieldError unused7) {
+            }
+            $EnumSwitchMapping$0 = iArr;
+        }
+    }
+
+    @SinceKotlin(version = "1.3")
+    public static final double convertDurationUnit(double d4, DurationUnit sourceUnit, DurationUnit targetUnit) {
+        Intrinsics.checkNotNullParameter(sourceUnit, "sourceUnit");
+        Intrinsics.checkNotNullParameter(targetUnit, "targetUnit");
+        long convert = targetUnit.getTimeUnit().convert(1L, sourceUnit.getTimeUnit());
+        return convert > 0 ? d4 * convert : d4 / sourceUnit.getTimeUnit().convert(1L, targetUnit.getTimeUnit());
+    }
+
+    @SinceKotlin(version = "1.5")
+    public static final long convertDurationUnitOverflow(long j4, DurationUnit sourceUnit, DurationUnit targetUnit) {
+        Intrinsics.checkNotNullParameter(sourceUnit, "sourceUnit");
+        Intrinsics.checkNotNullParameter(targetUnit, "targetUnit");
+        return targetUnit.getTimeUnit().convert(j4, sourceUnit.getTimeUnit());
+    }
+
+    @SinceKotlin(version = "1.8")
+    @WasExperimental(markerClass = {ExperimentalTime.class})
+    public static final DurationUnit toDurationUnit(TimeUnit timeUnit) {
+        Intrinsics.checkNotNullParameter(timeUnit, "<this>");
+        switch (WhenMappings.$EnumSwitchMapping$0[timeUnit.ordinal()]) {
+            case 1:
+                return DurationUnit.NANOSECONDS;
+            case 2:
+                return DurationUnit.MICROSECONDS;
+            case 3:
+                return DurationUnit.MILLISECONDS;
+            case 4:
+                return DurationUnit.SECONDS;
+            case 5:
+                return DurationUnit.MINUTES;
+            case 6:
+                return DurationUnit.HOURS;
+            case 7:
+                return DurationUnit.DAYS;
+            default:
+                throw new NoWhenBranchMatchedException();
+        }
+    }
+
+    @SinceKotlin(version = "1.8")
+    @WasExperimental(markerClass = {ExperimentalTime.class})
+    public static final TimeUnit toTimeUnit(DurationUnit durationUnit) {
+        Intrinsics.checkNotNullParameter(durationUnit, "<this>");
+        return durationUnit.getTimeUnit();
+    }
+
+    @SinceKotlin(version = "1.5")
+    public static final long convertDurationUnit(long j4, DurationUnit sourceUnit, DurationUnit targetUnit) {
+        Intrinsics.checkNotNullParameter(sourceUnit, "sourceUnit");
+        Intrinsics.checkNotNullParameter(targetUnit, "targetUnit");
+        return targetUnit.getTimeUnit().convert(j4, sourceUnit.getTimeUnit());
+    }
+}