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/io/ConsoleKt.java

@@ -0,0 +1,144 @@
+package kotlin.io;
+
+import java.io.InputStream;
+import java.nio.charset.Charset;
+import kotlin.Metadata;
+import kotlin.SinceKotlin;
+import kotlin.internal.InlineOnly;
+import kotlin.jvm.JvmName;
+import kotlin.jvm.internal.Intrinsics;
+
+@Metadata(d1 = {"\u0000<\n\u0000\n\u0002\u0010\u0002\n\u0000\n\u0002\u0010\u0000\n\u0002\u0010\u000b\n\u0002\u0010\u0005\n\u0002\u0010\f\n\u0002\u0010\u0019\n\u0002\u0010\u0006\n\u0002\u0010\u0007\n\u0002\u0010\b\n\u0002\u0010\t\n\u0002\u0010\n\n\u0002\b\u0002\n\u0002\u0010\u000e\n\u0002\b\u0003\u001a\u0013\u0010\u0000\u001a\u00020\u00012\b\u0010\u0002\u001a\u0004\u0018\u00010\u0003H\u0087\b\u001a\u0011\u0010\u0000\u001a\u00020\u00012\u0006\u0010\u0002\u001a\u00020\u0004H\u0087\b\u001a\u0011\u0010\u0000\u001a\u00020\u00012\u0006\u0010\u0002\u001a\u00020\u0005H\u0087\b\u001a\u0011\u0010\u0000\u001a\u00020\u00012\u0006\u0010\u0002\u001a\u00020\u0006H\u0087\b\u001a\u0011\u0010\u0000\u001a\u00020\u00012\u0006\u0010\u0002\u001a\u00020\u0007H\u0087\b\u001a\u0011\u0010\u0000\u001a\u00020\u00012\u0006\u0010\u0002\u001a\u00020\bH\u0087\b\u001a\u0011\u0010\u0000\u001a\u00020\u00012\u0006\u0010\u0002\u001a\u00020\tH\u0087\b\u001a\u0011\u0010\u0000\u001a\u00020\u00012\u0006\u0010\u0002\u001a\u00020\nH\u0087\b\u001a\u0011\u0010\u0000\u001a\u00020\u00012\u0006\u0010\u0002\u001a\u00020\u000bH\u0087\b\u001a\u0011\u0010\u0000\u001a\u00020\u00012\u0006\u0010\u0002\u001a\u00020\fH\u0087\b\u001a\t\u0010\r\u001a\u00020\u0001H\u0087\b\u001a\u0013\u0010\r\u001a\u00020\u00012\b\u0010\u0002\u001a\u0004\u0018\u00010\u0003H\u0087\b\u001a\u0011\u0010\r\u001a\u00020\u00012\u0006\u0010\u0002\u001a\u00020\u0004H\u0087\b\u001a\u0011\u0010\r\u001a\u00020\u00012\u0006\u0010\u0002\u001a\u00020\u0005H\u0087\b\u001a\u0011\u0010\r\u001a\u00020\u00012\u0006\u0010\u0002\u001a\u00020\u0006H\u0087\b\u001a\u0011\u0010\r\u001a\u00020\u00012\u0006\u0010\u0002\u001a\u00020\u0007H\u0087\b\u001a\u0011\u0010\r\u001a\u00020\u00012\u0006\u0010\u0002\u001a\u00020\bH\u0087\b\u001a\u0011\u0010\r\u001a\u00020\u00012\u0006\u0010\u0002\u001a\u00020\tH\u0087\b\u001a\u0011\u0010\r\u001a\u00020\u00012\u0006\u0010\u0002\u001a\u00020\nH\u0087\b\u001a\u0011\u0010\r\u001a\u00020\u00012\u0006\u0010\u0002\u001a\u00020\u000bH\u0087\b\u001a\u0011\u0010\r\u001a\u00020\u00012\u0006\u0010\u0002\u001a\u00020\fH\u0087\b\u001a\b\u0010\u000e\u001a\u0004\u0018\u00010\u000f\u001a\b\u0010\u0010\u001a\u00020\u000fH\u0007\u001a\n\u0010\u0011\u001a\u0004\u0018\u00010\u000fH\u0007¨\u0006\u0012"}, d2 = {"print", "", "message", "", "", "", "", "", "", "", "", "", "", "println", "readLine", "", "readln", "readlnOrNull", "kotlin-stdlib"}, k = 2, mv = {1, 9, 0}, xi = 48)
+@JvmName(name = "ConsoleKt")
+/* loaded from: classes3.dex */
+public final class ConsoleKt {
+    @InlineOnly
+    private static final void print(Object obj) {
+        System.out.print(obj);
+    }
+
+    @InlineOnly
+    private static final void println(Object obj) {
+        System.out.println(obj);
+    }
+
+    public static final String readLine() {
+        LineReader lineReader = LineReader.INSTANCE;
+        InputStream in = System.in;
+        Intrinsics.checkNotNullExpressionValue(in, "in");
+        Charset defaultCharset = Charset.defaultCharset();
+        Intrinsics.checkNotNullExpressionValue(defaultCharset, "defaultCharset(...)");
+        return lineReader.readLine(in, defaultCharset);
+    }
+
+    @SinceKotlin(version = "1.6")
+    public static final String readln() {
+        String readlnOrNull = readlnOrNull();
+        if (readlnOrNull != null) {
+            return readlnOrNull;
+        }
+        throw new ReadAfterEOFException("EOF has already been reached");
+    }
+
+    @SinceKotlin(version = "1.6")
+    public static final String readlnOrNull() {
+        return readLine();
+    }
+
+    @InlineOnly
+    private static final void print(int i) {
+        System.out.print(i);
+    }
+
+    @InlineOnly
+    private static final void println(int i) {
+        System.out.println(i);
+    }
+
+    @InlineOnly
+    private static final void print(long j4) {
+        System.out.print(j4);
+    }
+
+    @InlineOnly
+    private static final void println(long j4) {
+        System.out.println(j4);
+    }
+
+    @InlineOnly
+    private static final void print(byte b4) {
+        System.out.print(Byte.valueOf(b4));
+    }
+
+    @InlineOnly
+    private static final void println(byte b4) {
+        System.out.println(Byte.valueOf(b4));
+    }
+
+    @InlineOnly
+    private static final void print(short s4) {
+        System.out.print(Short.valueOf(s4));
+    }
+
+    @InlineOnly
+    private static final void println(short s4) {
+        System.out.println(Short.valueOf(s4));
+    }
+
+    @InlineOnly
+    private static final void print(char c4) {
+        System.out.print(c4);
+    }
+
+    @InlineOnly
+    private static final void println(char c4) {
+        System.out.println(c4);
+    }
+
+    @InlineOnly
+    private static final void print(boolean z3) {
+        System.out.print(z3);
+    }
+
+    @InlineOnly
+    private static final void println(boolean z3) {
+        System.out.println(z3);
+    }
+
+    @InlineOnly
+    private static final void print(float f2) {
+        System.out.print(f2);
+    }
+
+    @InlineOnly
+    private static final void println(float f2) {
+        System.out.println(f2);
+    }
+
+    @InlineOnly
+    private static final void print(double d4) {
+        System.out.print(d4);
+    }
+
+    @InlineOnly
+    private static final void println(double d4) {
+        System.out.println(d4);
+    }
+
+    @InlineOnly
+    private static final void print(char[] message) {
+        Intrinsics.checkNotNullParameter(message, "message");
+        System.out.print(message);
+    }
+
+    @InlineOnly
+    private static final void println(char[] message) {
+        Intrinsics.checkNotNullParameter(message, "message");
+        System.out.println(message);
+    }
+
+    @InlineOnly
+    private static final void println() {
+        System.out.println();
+    }
+}