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/FilePathComponents.java

@@ -0,0 +1,107 @@
+package kotlin.io;
+
+import com.google.android.gms.measurement.internal.a;
+import java.io.File;
+import java.util.List;
+import kotlin.Metadata;
+import kotlin.collections.CollectionsKt___CollectionsKt;
+import kotlin.jvm.internal.Intrinsics;
+
+@Metadata(d1 = {"\u00000\n\u0002\u0018\u0002\n\u0002\u0010\u0000\n\u0000\n\u0002\u0018\u0002\n\u0000\n\u0002\u0010 \n\u0002\b\u0002\n\u0002\u0010\u000b\n\u0002\b\u0004\n\u0002\u0010\u000e\n\u0002\b\u0005\n\u0002\u0010\b\n\u0002\b\r\b\u0080\b\u0018\u00002\u00020\u0001B\u001d\b\u0000\u0012\u0006\u0010\u0002\u001a\u00020\u0003\u0012\f\u0010\u0004\u001a\b\u0012\u0004\u0012\u00020\u00030\u0005¢\u0006\u0002\u0010\u0006J\t\u0010\u0016\u001a\u00020\u0003HÆ\u0003J\u000f\u0010\u0017\u001a\b\u0012\u0004\u0012\u00020\u00030\u0005HÆ\u0003J#\u0010\u0018\u001a\u00020\u00002\b\b\u0002\u0010\u0002\u001a\u00020\u00032\u000e\b\u0002\u0010\u0004\u001a\b\u0012\u0004\u0012\u00020\u00030\u0005HÆ\u0001J\u0013\u0010\u0019\u001a\u00020\b2\b\u0010\u001a\u001a\u0004\u0018\u00010\u0001HÖ\u0003J\t\u0010\u001b\u001a\u00020\u0013HÖ\u0001J\u0016\u0010\u001c\u001a\u00020\u00032\u0006\u0010\u001d\u001a\u00020\u00132\u0006\u0010\u001e\u001a\u00020\u0013J\t\u0010\u001f\u001a\u00020\rHÖ\u0001R\u0011\u0010\u0007\u001a\u00020\b8F¢\u0006\u0006\u001a\u0004\b\u0007\u0010\tR\u0011\u0010\u0002\u001a\u00020\u0003¢\u0006\b\n\u0000\u001a\u0004\b\n\u0010\u000bR\u0011\u0010\f\u001a\u00020\r8F¢\u0006\u0006\u001a\u0004\b\u000e\u0010\u000fR\u0017\u0010\u0004\u001a\b\u0012\u0004\u0012\u00020\u00030\u0005¢\u0006\b\n\u0000\u001a\u0004\b\u0010\u0010\u0011R\u0011\u0010\u0012\u001a\u00020\u00138F¢\u0006\u0006\u001a\u0004\b\u0014\u0010\u0015¨\u0006 "}, d2 = {"Lkotlin/io/FilePathComponents;", "", "root", "Ljava/io/File;", "segments", "", "(Ljava/io/File;Ljava/util/List;)V", "isRooted", "", "()Z", "getRoot", "()Ljava/io/File;", "rootName", "", "getRootName", "()Ljava/lang/String;", "getSegments", "()Ljava/util/List;", "size", "", "getSize", "()I", "component1", "component2", "copy", "equals", "other", "hashCode", "subPath", "beginIndex", "endIndex", "toString", "kotlin-stdlib"}, k = 1, mv = {1, 9, 0}, xi = 48)
+/* loaded from: classes3.dex */
+public final /* data */ class FilePathComponents {
+    private final File root;
+    private final List<File> segments;
+
+    /* JADX WARN: Multi-variable type inference failed */
+    public FilePathComponents(File root, List<? extends File> segments) {
+        Intrinsics.checkNotNullParameter(root, "root");
+        Intrinsics.checkNotNullParameter(segments, "segments");
+        this.root = root;
+        this.segments = segments;
+    }
+
+    /* JADX WARN: Multi-variable type inference failed */
+    public static /* synthetic */ FilePathComponents copy$default(FilePathComponents filePathComponents, File file, List list, int i, Object obj) {
+        if ((i & 1) != 0) {
+            file = filePathComponents.root;
+        }
+        if ((i & 2) != 0) {
+            list = filePathComponents.segments;
+        }
+        return filePathComponents.copy(file, list);
+    }
+
+    /* renamed from: component1, reason: from getter */
+    public final File getRoot() {
+        return this.root;
+    }
+
+    public final List<File> component2() {
+        return this.segments;
+    }
+
+    public final FilePathComponents copy(File root, List<? extends File> segments) {
+        Intrinsics.checkNotNullParameter(root, "root");
+        Intrinsics.checkNotNullParameter(segments, "segments");
+        return new FilePathComponents(root, segments);
+    }
+
+    public boolean equals(Object other) {
+        if (this == other) {
+            return true;
+        }
+        if (!(other instanceof FilePathComponents)) {
+            return false;
+        }
+        FilePathComponents filePathComponents = (FilePathComponents) other;
+        return Intrinsics.areEqual(this.root, filePathComponents.root) && Intrinsics.areEqual(this.segments, filePathComponents.segments);
+    }
+
+    public final File getRoot() {
+        return this.root;
+    }
+
+    public final String getRootName() {
+        String path = this.root.getPath();
+        Intrinsics.checkNotNullExpressionValue(path, "getPath(...)");
+        return path;
+    }
+
+    public final List<File> getSegments() {
+        return this.segments;
+    }
+
+    public final int getSize() {
+        return this.segments.size();
+    }
+
+    public int hashCode() {
+        return this.segments.hashCode() + (this.root.hashCode() * 31);
+    }
+
+    public final boolean isRooted() {
+        String path = this.root.getPath();
+        Intrinsics.checkNotNullExpressionValue(path, "getPath(...)");
+        return path.length() > 0;
+    }
+
+    public final File subPath(int beginIndex, int endIndex) {
+        String joinToString$default;
+        if (beginIndex < 0 || beginIndex > endIndex || endIndex > getSize()) {
+            throw new IllegalArgumentException();
+        }
+        List<File> subList = this.segments.subList(beginIndex, endIndex);
+        String separator = File.separator;
+        Intrinsics.checkNotNullExpressionValue(separator, "separator");
+        joinToString$default = CollectionsKt___CollectionsKt.joinToString$default(subList, separator, null, null, 0, null, null, 62, null);
+        return new File(joinToString$default);
+    }
+
+    public String toString() {
+        StringBuilder sb = new StringBuilder("FilePathComponents(root=");
+        sb.append(this.root);
+        sb.append(", segments=");
+        return a.o(sb, this.segments, ')');
+    }
+}