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/s0/C0582a.java

@@ -0,0 +1,78 @@
+package s0;
+
+import android.content.res.AssetManager;
+import android.os.Build;
+import b.l;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.Serializable;
+import java.util.concurrent.Executor;
+
+/* renamed from: s0.a, reason: case insensitive filesystem */
+/* loaded from: classes.dex */
+public final class C0582a {
+
+    /* renamed from: a, reason: collision with root package name */
+    public final Executor f8359a;
+
+    /* renamed from: b, reason: collision with root package name */
+    public final InterfaceC0584c f8360b;
+
+    /* renamed from: c, reason: collision with root package name */
+    public final byte[] f8361c;
+
+    /* renamed from: d, reason: collision with root package name */
+    public final File f8362d;
+
+    /* renamed from: e, reason: collision with root package name */
+    public final String f8363e;
+
+    /* renamed from: f, reason: collision with root package name */
+    public boolean f8364f = false;
+
+    /* renamed from: g, reason: collision with root package name */
+    public C0583b[] f8365g;
+    public byte[] h;
+
+    public C0582a(AssetManager assetManager, Executor executor, InterfaceC0584c interfaceC0584c, String str, File file) {
+        this.f8359a = executor;
+        this.f8360b = interfaceC0584c;
+        this.f8363e = str;
+        this.f8362d = file;
+        int i = Build.VERSION.SDK_INT;
+        byte[] bArr = null;
+        if (i <= 34) {
+            switch (i) {
+                case 29:
+                case 30:
+                    bArr = AbstractC0585d.f8377e;
+                    break;
+                case 31:
+                case 32:
+                case 33:
+                case 34:
+                    bArr = AbstractC0585d.f8376d;
+                    break;
+            }
+        }
+        this.f8361c = bArr;
+    }
+
+    public final FileInputStream a(AssetManager assetManager, String str) {
+        try {
+            return assetManager.openFd(str).createInputStream();
+        } catch (FileNotFoundException e4) {
+            String message = e4.getMessage();
+            if (message == null || !message.contains("compressed")) {
+                return null;
+            }
+            this.f8360b.h();
+            return null;
+        }
+    }
+
+    public final void b(int i, Serializable serializable) {
+        this.f8359a.execute(new l(this, i, 2, serializable));
+    }
+}