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/l3/g.java

@@ -0,0 +1,95 @@
+package l3;
+
+import f0.C0338b;
+import kotlin.jvm.internal.Intrinsics;
+import kotlin.text.StringsKt__StringsJVMKt;
+import r3.C0579k;
+
+/* loaded from: classes3.dex */
+public abstract class g {
+
+    /* renamed from: a, reason: collision with root package name */
+    public static final C0579k f7403a;
+
+    /* renamed from: b, reason: collision with root package name */
+    public static final String[] f7404b;
+
+    /* renamed from: c, reason: collision with root package name */
+    public static final String[] f7405c;
+
+    /* renamed from: d, reason: collision with root package name */
+    public static final String[] f7406d;
+
+    static {
+        String replace$default;
+        C0579k c0579k = C0579k.f8285d;
+        f7403a = C0338b.n("PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n");
+        f7404b = new String[]{"DATA", "HEADERS", "PRIORITY", "RST_STREAM", "SETTINGS", "PUSH_PROMISE", "PING", "GOAWAY", "WINDOW_UPDATE", "CONTINUATION"};
+        f7405c = new String[64];
+        String[] strArr = new String[256];
+        for (int i = 0; i < 256; i++) {
+            String binaryString = Integer.toBinaryString(i);
+            Intrinsics.checkNotNullExpressionValue(binaryString, "toBinaryString(it)");
+            replace$default = StringsKt__StringsJVMKt.replace$default(f3.c.h("%8s", binaryString), ' ', '0', false, 4, (Object) null);
+            strArr[i] = replace$default;
+        }
+        f7406d = strArr;
+        String[] strArr2 = f7405c;
+        strArr2[0] = "";
+        strArr2[1] = "END_STREAM";
+        int[] iArr = {1};
+        strArr2[8] = "PADDED";
+        int i4 = iArr[0];
+        strArr2[i4 | 8] = C.w.r(new StringBuilder(), strArr2[i4], "|PADDED");
+        strArr2[4] = "END_HEADERS";
+        strArr2[32] = "PRIORITY";
+        strArr2[36] = "END_HEADERS|PRIORITY";
+        int[] iArr2 = {4, 32, 36};
+        for (int i5 = 0; i5 < 3; i5++) {
+            int i6 = iArr2[i5];
+            int i7 = iArr[0];
+            String[] strArr3 = f7405c;
+            int i8 = i7 | i6;
+            strArr3[i8] = strArr3[i7] + '|' + strArr3[i6];
+            StringBuilder sb = new StringBuilder();
+            sb.append(strArr3[i7]);
+            sb.append('|');
+            strArr3[i8 | 8] = C.w.r(sb, strArr3[i6], "|PADDED");
+        }
+        int length = f7405c.length;
+        for (int i9 = 0; i9 < length; i9++) {
+            String[] strArr4 = f7405c;
+            if (strArr4[i9] == null) {
+                strArr4[i9] = f7406d[i9];
+            }
+        }
+    }
+
+    public static String a(boolean z3, int i, int i4, int i5, int i6) {
+        String str;
+        String str2;
+        String[] strArr = f7404b;
+        String h = i5 < strArr.length ? strArr[i5] : f3.c.h("0x%02x", Integer.valueOf(i5));
+        if (i6 == 0) {
+            str = "";
+        } else {
+            String[] strArr2 = f7406d;
+            if (i5 != 2 && i5 != 3) {
+                if (i5 == 4 || i5 == 6) {
+                    str = i6 == 1 ? "ACK" : strArr2[i6];
+                } else if (i5 != 7 && i5 != 8) {
+                    String[] strArr3 = f7405c;
+                    if (i6 < strArr3.length) {
+                        str2 = strArr3[i6];
+                        Intrinsics.checkNotNull(str2);
+                    } else {
+                        str2 = strArr2[i6];
+                    }
+                    str = (i5 != 5 || (i6 & 4) == 0) ? (i5 != 0 || (i6 & 32) == 0) ? str2 : StringsKt__StringsJVMKt.replace$default(str2, "PRIORITY", "COMPRESSED", false, 4, (Object) null) : StringsKt__StringsJVMKt.replace$default(str2, "HEADERS", "PUSH_PROMISE", false, 4, (Object) null);
+                }
+            }
+            str = strArr2[i6];
+        }
+        return f3.c.h("%s 0x%08x %5d %-13s %s", z3 ? "<<" : ">>", Integer.valueOf(i), Integer.valueOf(i4), h, str);
+    }
+}