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/r3/A.java

@@ -0,0 +1,129 @@
+package r3;
+
+import kotlin.jvm.internal.Intrinsics;
+
+/* loaded from: classes3.dex */
+public final class A implements I {
+
+    /* renamed from: a, reason: collision with root package name */
+    public final InterfaceC0578j f8236a;
+
+    /* renamed from: b, reason: collision with root package name */
+    public final C0576h f8237b;
+
+    /* renamed from: c, reason: collision with root package name */
+    public D f8238c;
+
+    /* renamed from: d, reason: collision with root package name */
+    public int f8239d;
+
+    /* renamed from: e, reason: collision with root package name */
+    public boolean f8240e;
+
+    /* renamed from: f, reason: collision with root package name */
+    public long f8241f;
+
+    public A(InterfaceC0578j upstream) {
+        Intrinsics.checkNotNullParameter(upstream, "upstream");
+        this.f8236a = upstream;
+        C0576h a2 = upstream.a();
+        this.f8237b = a2;
+        D d4 = a2.f8283a;
+        this.f8238c = d4;
+        this.f8239d = d4 != null ? d4.f8249b : -1;
+    }
+
+    @Override // java.io.Closeable, java.lang.AutoCloseable
+    public final void close() {
+        this.f8240e = true;
+    }
+
+    /* JADX WARN: Code restructure failed: missing block: B:10:0x0020, code lost:
+    
+        if (r3 == r5.f8249b) goto L15;
+     */
+    @Override // r3.I
+    /*
+        Code decompiled incorrectly, please refer to instructions dump.
+        To view partially-correct add '--show-bad-code' argument
+    */
+    public final long read(r3.C0576h r9, long r10) {
+        /*
+            r8 = this;
+            java.lang.String r0 = "sink"
+            kotlin.jvm.internal.Intrinsics.checkNotNullParameter(r9, r0)
+            r0 = 0
+            int r2 = (r10 > r0 ? 1 : (r10 == r0 ? 0 : -1))
+            if (r2 < 0) goto L6e
+            boolean r3 = r8.f8240e
+            if (r3 != 0) goto L66
+            r3.D r3 = r8.f8238c
+            r3.h r4 = r8.f8237b
+            if (r3 == 0) goto L2b
+            r3.D r5 = r4.f8283a
+            if (r3 != r5) goto L23
+            int r3 = r8.f8239d
+            kotlin.jvm.internal.Intrinsics.checkNotNull(r5)
+            int r5 = r5.f8249b
+            if (r3 != r5) goto L23
+            goto L2b
+        L23:
+            java.lang.IllegalStateException r8 = new java.lang.IllegalStateException
+            java.lang.String r9 = "Peek source is invalid because upstream source was used"
+            r8.<init>(r9)
+            throw r8
+        L2b:
+            if (r2 != 0) goto L2e
+            return r0
+        L2e:
+            long r0 = r8.f8241f
+            r2 = 1
+            long r0 = r0 + r2
+            r3.j r2 = r8.f8236a
+            boolean r0 = r2.n(r0)
+            if (r0 != 0) goto L3e
+            r8 = -1
+            return r8
+        L3e:
+            r3.D r0 = r8.f8238c
+            if (r0 != 0) goto L4f
+            r3.D r0 = r4.f8283a
+            if (r0 == 0) goto L4f
+            r8.f8238c = r0
+            kotlin.jvm.internal.Intrinsics.checkNotNull(r0)
+            int r0 = r0.f8249b
+            r8.f8239d = r0
+        L4f:
+            long r0 = r4.f8284b
+            long r2 = r8.f8241f
+            long r0 = r0 - r2
+            long r6 = java.lang.Math.min(r10, r0)
+            r3.h r2 = r8.f8237b
+            long r4 = r8.f8241f
+            r3 = r9
+            r2.s(r3, r4, r6)
+            long r9 = r8.f8241f
+            long r9 = r9 + r6
+            r8.f8241f = r9
+            return r6
+        L66:
+            java.lang.IllegalStateException r8 = new java.lang.IllegalStateException
+            java.lang.String r9 = "closed"
+            r8.<init>(r9)
+            throw r8
+        L6e:
+            java.lang.String r8 = "byteCount < 0: "
+            java.lang.String r8 = C.w.l(r8, r10)
+            java.lang.IllegalArgumentException r9 = new java.lang.IllegalArgumentException
+            java.lang.String r8 = r8.toString()
+            r9.<init>(r8)
+            throw r9
+        */
+        throw new UnsupportedOperationException("Method not decompiled: r3.A.read(r3.h, long):long");
+    }
+
+    @Override // r3.I
+    public final K timeout() {
+        return this.f8236a.timeout();
+    }
+}