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/U1/a.java

@@ -0,0 +1,60 @@
+package U1;
+
+import java.nio.charset.Charset;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.regex.Pattern;
+import m3.l;
+
+/* loaded from: classes3.dex */
+public final class a {
+
+    /* renamed from: c, reason: collision with root package name */
+    public static final String f1776c = l.J("hts/frbslgiggolai.o/0clgbthfra=snpoo", "tp:/ieaeogn.ogepscmvc/o/ac?omtjo_rt3");
+
+    /* renamed from: d, reason: collision with root package name */
+    public static final Set f1777d;
+
+    /* renamed from: e, reason: collision with root package name */
+    public static final a f1778e;
+
+    /* renamed from: a, reason: collision with root package name */
+    public final String f1779a;
+
+    /* renamed from: b, reason: collision with root package name */
+    public final String f1780b;
+
+    static {
+        String J = l.J("hts/frbslgigp.ogepscmv/ieo/eaybtho", "tp:/ieaeogn-agolai.o/1frlglgc/aclg");
+        String J3 = l.J("AzSCki82AwsLzKd5O8zo", "IayckHiZRO1EFl1aGoK");
+        f1777d = Collections.unmodifiableSet(new HashSet(Arrays.asList(new T1.c("proto"), new T1.c("json"))));
+        f1778e = new a(J, J3);
+    }
+
+    public a(String str, String str2) {
+        this.f1779a = str;
+        this.f1780b = str2;
+    }
+
+    public static a a(byte[] bArr) {
+        String str = new String(bArr, Charset.forName("UTF-8"));
+        if (!str.startsWith("1$")) {
+            throw new IllegalArgumentException("Version marker missing from extras");
+        }
+        String[] split = str.substring(2).split(Pattern.quote("\\"), 2);
+        if (split.length != 2) {
+            throw new IllegalArgumentException("Extra is not a valid encoded LegacyFlgDestination");
+        }
+        String str2 = split[0];
+        if (str2.isEmpty()) {
+            throw new IllegalArgumentException("Missing endpoint in CCTDestination extras");
+        }
+        String str3 = split[1];
+        if (str3.isEmpty()) {
+            str3 = null;
+        }
+        return new a(str2, str3);
+    }
+}