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/NumbersKt__NumbersJVMKt.java

@@ -0,0 +1,176 @@
+package kotlin;
+
+import kotlin.internal.InlineOnly;
+import kotlin.jvm.internal.DoubleCompanionObject;
+import kotlin.jvm.internal.FloatCompanionObject;
+import kotlin.jvm.internal.Intrinsics;
+
+@Metadata(d1 = {"\u0000*\n\u0000\n\u0002\u0010\b\n\u0002\u0010\t\n\u0002\b\u0003\n\u0002\u0010\u0006\n\u0002\u0018\u0002\n\u0000\n\u0002\u0010\u0007\n\u0002\u0018\u0002\n\u0000\n\u0002\u0010\u000b\n\u0002\b\n\u001a\r\u0010\u0000\u001a\u00020\u0001*\u00020\u0001H\u0087\b\u001a\r\u0010\u0000\u001a\u00020\u0001*\u00020\u0002H\u0087\b\u001a\r\u0010\u0003\u001a\u00020\u0001*\u00020\u0001H\u0087\b\u001a\r\u0010\u0003\u001a\u00020\u0001*\u00020\u0002H\u0087\b\u001a\r\u0010\u0004\u001a\u00020\u0001*\u00020\u0001H\u0087\b\u001a\r\u0010\u0004\u001a\u00020\u0001*\u00020\u0002H\u0087\b\u001a\u0015\u0010\u0005\u001a\u00020\u0006*\u00020\u00072\u0006\u0010\b\u001a\u00020\u0002H\u0087\b\u001a\u0015\u0010\u0005\u001a\u00020\t*\u00020\n2\u0006\u0010\b\u001a\u00020\u0001H\u0087\b\u001a\r\u0010\u000b\u001a\u00020\f*\u00020\u0006H\u0087\b\u001a\r\u0010\u000b\u001a\u00020\f*\u00020\tH\u0087\b\u001a\r\u0010\r\u001a\u00020\f*\u00020\u0006H\u0087\b\u001a\r\u0010\r\u001a\u00020\f*\u00020\tH\u0087\b\u001a\r\u0010\u000e\u001a\u00020\f*\u00020\u0006H\u0087\b\u001a\r\u0010\u000e\u001a\u00020\f*\u00020\tH\u0087\b\u001a\u0015\u0010\u000f\u001a\u00020\u0001*\u00020\u00012\u0006\u0010\u0010\u001a\u00020\u0001H\u0087\b\u001a\u0015\u0010\u000f\u001a\u00020\u0002*\u00020\u00022\u0006\u0010\u0010\u001a\u00020\u0001H\u0087\b\u001a\u0015\u0010\u0011\u001a\u00020\u0001*\u00020\u00012\u0006\u0010\u0010\u001a\u00020\u0001H\u0087\b\u001a\u0015\u0010\u0011\u001a\u00020\u0002*\u00020\u00022\u0006\u0010\u0010\u001a\u00020\u0001H\u0087\b\u001a\r\u0010\u0012\u001a\u00020\u0001*\u00020\u0001H\u0087\b\u001a\r\u0010\u0012\u001a\u00020\u0002*\u00020\u0002H\u0087\b\u001a\r\u0010\u0013\u001a\u00020\u0001*\u00020\u0001H\u0087\b\u001a\r\u0010\u0013\u001a\u00020\u0002*\u00020\u0002H\u0087\b\u001a\r\u0010\u0014\u001a\u00020\u0002*\u00020\u0006H\u0087\b\u001a\r\u0010\u0014\u001a\u00020\u0001*\u00020\tH\u0087\b\u001a\r\u0010\u0015\u001a\u00020\u0002*\u00020\u0006H\u0087\b\u001a\r\u0010\u0015\u001a\u00020\u0001*\u00020\tH\u0087\b¨\u0006\u0016"}, d2 = {"countLeadingZeroBits", "", "", "countOneBits", "countTrailingZeroBits", "fromBits", "", "Lkotlin/Double$Companion;", "bits", "", "Lkotlin/Float$Companion;", "isFinite", "", "isInfinite", "isNaN", "rotateLeft", "bitCount", "rotateRight", "takeHighestOneBit", "takeLowestOneBit", "toBits", "toRawBits", "kotlin-stdlib"}, k = 5, mv = {1, 9, 0}, xi = 49, xs = "kotlin/NumbersKt")
+/* loaded from: classes3.dex */
+class NumbersKt__NumbersJVMKt extends NumbersKt__FloorDivModKt {
+    @SinceKotlin(version = "1.4")
+    @WasExperimental(markerClass = {ExperimentalStdlibApi.class})
+    @InlineOnly
+    private static final int countLeadingZeroBits(int i) {
+        return Integer.numberOfLeadingZeros(i);
+    }
+
+    @SinceKotlin(version = "1.4")
+    @WasExperimental(markerClass = {ExperimentalStdlibApi.class})
+    @InlineOnly
+    private static final int countOneBits(int i) {
+        return Integer.bitCount(i);
+    }
+
+    @SinceKotlin(version = "1.4")
+    @WasExperimental(markerClass = {ExperimentalStdlibApi.class})
+    @InlineOnly
+    private static final int countTrailingZeroBits(int i) {
+        return Integer.numberOfTrailingZeros(i);
+    }
+
+    @SinceKotlin(version = "1.2")
+    @InlineOnly
+    private static final double fromBits(DoubleCompanionObject doubleCompanionObject, long j4) {
+        Intrinsics.checkNotNullParameter(doubleCompanionObject, "<this>");
+        return Double.longBitsToDouble(j4);
+    }
+
+    @InlineOnly
+    private static final boolean isFinite(double d4) {
+        return (Double.isInfinite(d4) || Double.isNaN(d4)) ? false : true;
+    }
+
+    @InlineOnly
+    private static final boolean isInfinite(double d4) {
+        return Double.isInfinite(d4);
+    }
+
+    @InlineOnly
+    private static final boolean isNaN(double d4) {
+        return Double.isNaN(d4);
+    }
+
+    @SinceKotlin(version = "1.6")
+    @WasExperimental(markerClass = {ExperimentalStdlibApi.class})
+    @InlineOnly
+    private static final int rotateLeft(int i, int i4) {
+        return Integer.rotateLeft(i, i4);
+    }
+
+    @SinceKotlin(version = "1.6")
+    @WasExperimental(markerClass = {ExperimentalStdlibApi.class})
+    @InlineOnly
+    private static final int rotateRight(int i, int i4) {
+        return Integer.rotateRight(i, i4);
+    }
+
+    @SinceKotlin(version = "1.4")
+    @WasExperimental(markerClass = {ExperimentalStdlibApi.class})
+    @InlineOnly
+    private static final int takeHighestOneBit(int i) {
+        return Integer.highestOneBit(i);
+    }
+
+    @SinceKotlin(version = "1.4")
+    @WasExperimental(markerClass = {ExperimentalStdlibApi.class})
+    @InlineOnly
+    private static final int takeLowestOneBit(int i) {
+        return Integer.lowestOneBit(i);
+    }
+
+    @SinceKotlin(version = "1.2")
+    @InlineOnly
+    private static final long toBits(double d4) {
+        return Double.doubleToLongBits(d4);
+    }
+
+    @SinceKotlin(version = "1.2")
+    @InlineOnly
+    private static final long toRawBits(double d4) {
+        return Double.doubleToRawLongBits(d4);
+    }
+
+    @SinceKotlin(version = "1.4")
+    @WasExperimental(markerClass = {ExperimentalStdlibApi.class})
+    @InlineOnly
+    private static final int countLeadingZeroBits(long j4) {
+        return Long.numberOfLeadingZeros(j4);
+    }
+
+    @SinceKotlin(version = "1.4")
+    @WasExperimental(markerClass = {ExperimentalStdlibApi.class})
+    @InlineOnly
+    private static final int countOneBits(long j4) {
+        return Long.bitCount(j4);
+    }
+
+    @SinceKotlin(version = "1.4")
+    @WasExperimental(markerClass = {ExperimentalStdlibApi.class})
+    @InlineOnly
+    private static final int countTrailingZeroBits(long j4) {
+        return Long.numberOfTrailingZeros(j4);
+    }
+
+    @SinceKotlin(version = "1.2")
+    @InlineOnly
+    private static final float fromBits(FloatCompanionObject floatCompanionObject, int i) {
+        Intrinsics.checkNotNullParameter(floatCompanionObject, "<this>");
+        return Float.intBitsToFloat(i);
+    }
+
+    @InlineOnly
+    private static final boolean isFinite(float f2) {
+        return (Float.isInfinite(f2) || Float.isNaN(f2)) ? false : true;
+    }
+
+    @InlineOnly
+    private static final boolean isInfinite(float f2) {
+        return Float.isInfinite(f2);
+    }
+
+    @InlineOnly
+    private static final boolean isNaN(float f2) {
+        return Float.isNaN(f2);
+    }
+
+    @SinceKotlin(version = "1.6")
+    @WasExperimental(markerClass = {ExperimentalStdlibApi.class})
+    @InlineOnly
+    private static final long rotateLeft(long j4, int i) {
+        return Long.rotateLeft(j4, i);
+    }
+
+    @SinceKotlin(version = "1.6")
+    @WasExperimental(markerClass = {ExperimentalStdlibApi.class})
+    @InlineOnly
+    private static final long rotateRight(long j4, int i) {
+        return Long.rotateRight(j4, i);
+    }
+
+    @SinceKotlin(version = "1.4")
+    @WasExperimental(markerClass = {ExperimentalStdlibApi.class})
+    @InlineOnly
+    private static final long takeHighestOneBit(long j4) {
+        return Long.highestOneBit(j4);
+    }
+
+    @SinceKotlin(version = "1.4")
+    @WasExperimental(markerClass = {ExperimentalStdlibApi.class})
+    @InlineOnly
+    private static final long takeLowestOneBit(long j4) {
+        return Long.lowestOneBit(j4);
+    }
+
+    @SinceKotlin(version = "1.2")
+    @InlineOnly
+    private static final int toBits(float f2) {
+        return Float.floatToIntBits(f2);
+    }
+
+    @SinceKotlin(version = "1.2")
+    @InlineOnly
+    private static final int toRawBits(float f2) {
+        return Float.floatToRawIntBits(f2);
+    }
+}