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/B.java

@@ -0,0 +1,230 @@
+package r3;
+
+import java.nio.ByteBuffer;
+import kotlin.jvm.internal.Intrinsics;
+
+/* loaded from: classes3.dex */
+public final class B implements InterfaceC0577i {
+
+    /* renamed from: a, reason: collision with root package name */
+    public final G f8242a;
+
+    /* renamed from: b, reason: collision with root package name */
+    public final C0576h f8243b;
+
+    /* renamed from: c, reason: collision with root package name */
+    public boolean f8244c;
+
+    /* JADX WARN: Type inference failed for: r2v1, types: [java.lang.Object, r3.h] */
+    public B(G sink) {
+        Intrinsics.checkNotNullParameter(sink, "sink");
+        this.f8242a = sink;
+        this.f8243b = new Object();
+    }
+
+    @Override // r3.InterfaceC0577i
+    public final long D(I source) {
+        Intrinsics.checkNotNullParameter(source, "source");
+        long j4 = 0;
+        while (true) {
+            long read = ((C0572d) source).read(this.f8243b, 8192L);
+            if (read == -1) {
+                return j4;
+            }
+            j4 += read;
+            d();
+        }
+    }
+
+    @Override // r3.InterfaceC0577i
+    public final InterfaceC0577i E(byte[] source) {
+        Intrinsics.checkNotNullParameter(source, "source");
+        if (this.f8244c) {
+            throw new IllegalStateException("closed");
+        }
+        C0576h c0576h = this.f8243b;
+        Intrinsics.checkNotNullParameter(source, "source");
+        c0576h.i0(source, 0, source.length);
+        d();
+        return this;
+    }
+
+    @Override // r3.InterfaceC0577i
+    public final InterfaceC0577i F(C0579k byteString) {
+        Intrinsics.checkNotNullParameter(byteString, "byteString");
+        if (this.f8244c) {
+            throw new IllegalStateException("closed");
+        }
+        this.f8243b.h0(byteString);
+        d();
+        return this;
+    }
+
+    @Override // r3.InterfaceC0577i
+    public final InterfaceC0577i L(int i, int i4, byte[] source) {
+        Intrinsics.checkNotNullParameter(source, "source");
+        if (this.f8244c) {
+            throw new IllegalStateException("closed");
+        }
+        this.f8243b.i0(source, i, i4);
+        d();
+        return this;
+    }
+
+    @Override // r3.InterfaceC0577i
+    public final InterfaceC0577i Q(String string) {
+        Intrinsics.checkNotNullParameter(string, "string");
+        if (this.f8244c) {
+            throw new IllegalStateException("closed");
+        }
+        this.f8243b.o0(string);
+        d();
+        return this;
+    }
+
+    @Override // r3.InterfaceC0577i
+    public final InterfaceC0577i R(long j4) {
+        if (this.f8244c) {
+            throw new IllegalStateException("closed");
+        }
+        this.f8243b.k0(j4);
+        d();
+        return this;
+    }
+
+    @Override // r3.InterfaceC0577i
+    public final C0576h a() {
+        return this.f8243b;
+    }
+
+    @Override // r3.G, java.io.Closeable, java.lang.AutoCloseable
+    public final void close() {
+        G g4 = this.f8242a;
+        if (this.f8244c) {
+            return;
+        }
+        try {
+            C0576h c0576h = this.f8243b;
+            long j4 = c0576h.f8284b;
+            if (j4 > 0) {
+                g4.z(c0576h, j4);
+            }
+            th = null;
+        } catch (Throwable th) {
+            th = th;
+        }
+        try {
+            g4.close();
+        } catch (Throwable th2) {
+            if (th == null) {
+                th = th2;
+            }
+        }
+        this.f8244c = true;
+        if (th != null) {
+            throw th;
+        }
+    }
+
+    public final InterfaceC0577i d() {
+        if (this.f8244c) {
+            throw new IllegalStateException("closed");
+        }
+        C0576h c0576h = this.f8243b;
+        long e4 = c0576h.e();
+        if (e4 > 0) {
+            this.f8242a.z(c0576h, e4);
+        }
+        return this;
+    }
+
+    @Override // r3.InterfaceC0577i
+    public final InterfaceC0577i f(String string, int i, int i4) {
+        Intrinsics.checkNotNullParameter(string, "string");
+        if (this.f8244c) {
+            throw new IllegalStateException("closed");
+        }
+        this.f8243b.p0(string, i, i4);
+        d();
+        return this;
+    }
+
+    @Override // r3.InterfaceC0577i, r3.G, java.io.Flushable
+    public final void flush() {
+        if (this.f8244c) {
+            throw new IllegalStateException("closed");
+        }
+        C0576h c0576h = this.f8243b;
+        long j4 = c0576h.f8284b;
+        G g4 = this.f8242a;
+        if (j4 > 0) {
+            g4.z(c0576h, j4);
+        }
+        g4.flush();
+    }
+
+    @Override // java.nio.channels.Channel
+    public final boolean isOpen() {
+        return !this.f8244c;
+    }
+
+    @Override // r3.InterfaceC0577i
+    public final InterfaceC0577i m(int i) {
+        if (this.f8244c) {
+            throw new IllegalStateException("closed");
+        }
+        this.f8243b.n0(i);
+        d();
+        return this;
+    }
+
+    @Override // r3.InterfaceC0577i
+    public final InterfaceC0577i r(int i) {
+        if (this.f8244c) {
+            throw new IllegalStateException("closed");
+        }
+        this.f8243b.m0(i);
+        d();
+        return this;
+    }
+
+    @Override // r3.G
+    public final K timeout() {
+        return this.f8242a.timeout();
+    }
+
+    public final String toString() {
+        return "buffer(" + this.f8242a + ')';
+    }
+
+    @Override // java.nio.channels.WritableByteChannel
+    public final int write(ByteBuffer source) {
+        Intrinsics.checkNotNullParameter(source, "source");
+        if (this.f8244c) {
+            throw new IllegalStateException("closed");
+        }
+        int write = this.f8243b.write(source);
+        d();
+        return write;
+    }
+
+    @Override // r3.InterfaceC0577i
+    public final InterfaceC0577i y(int i) {
+        if (this.f8244c) {
+            throw new IllegalStateException("closed");
+        }
+        this.f8243b.j0(i);
+        d();
+        return this;
+    }
+
+    @Override // r3.G
+    public final void z(C0576h source, long j4) {
+        Intrinsics.checkNotNullParameter(source, "source");
+        if (this.f8244c) {
+            throw new IllegalStateException("closed");
+        }
+        this.f8243b.z(source, j4);
+        d();
+    }
+}