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/e3/D.java

@@ -0,0 +1,150 @@
+package e3;
+
+import java.util.List;
+import java.util.regex.Pattern;
+import kotlin.jvm.internal.Intrinsics;
+import r3.C0576h;
+import r3.C0579k;
+import r3.InterfaceC0577i;
+
+/* loaded from: classes3.dex */
+public final class D extends M {
+
+    /* renamed from: e, reason: collision with root package name */
+    public static final A f6207e;
+
+    /* renamed from: f, reason: collision with root package name */
+    public static final A f6208f;
+
+    /* renamed from: g, reason: collision with root package name */
+    public static final byte[] f6209g;
+    public static final byte[] h;
+    public static final byte[] i;
+
+    /* renamed from: a, reason: collision with root package name */
+    public final C0579k f6210a;
+
+    /* renamed from: b, reason: collision with root package name */
+    public final List f6211b;
+
+    /* renamed from: c, reason: collision with root package name */
+    public final A f6212c;
+
+    /* renamed from: d, reason: collision with root package name */
+    public long f6213d;
+
+    static {
+        Pattern pattern = A.f6197d;
+        f6207e = z.a("multipart/mixed");
+        z.a("multipart/alternative");
+        z.a("multipart/digest");
+        z.a("multipart/parallel");
+        f6208f = z.a("multipart/form-data");
+        f6209g = new byte[]{58, 32};
+        h = new byte[]{13, 10};
+        i = new byte[]{45, 45};
+    }
+
+    public D(C0579k boundaryByteString, A type, List parts) {
+        Intrinsics.checkNotNullParameter(boundaryByteString, "boundaryByteString");
+        Intrinsics.checkNotNullParameter(type, "type");
+        Intrinsics.checkNotNullParameter(parts, "parts");
+        this.f6210a = boundaryByteString;
+        this.f6211b = parts;
+        Pattern pattern = A.f6197d;
+        this.f6212c = z.a(type + "; boundary=" + boundaryByteString.q());
+        this.f6213d = -1L;
+    }
+
+    /* JADX WARN: Multi-variable type inference failed */
+    public final long a(InterfaceC0577i interfaceC0577i, boolean z3) {
+        C0576h c0576h;
+        InterfaceC0577i interfaceC0577i2;
+        if (z3) {
+            Object obj = new Object();
+            c0576h = obj;
+            interfaceC0577i2 = obj;
+        } else {
+            c0576h = null;
+            interfaceC0577i2 = interfaceC0577i;
+        }
+        List list = this.f6211b;
+        int size = list.size();
+        long j4 = 0;
+        int i4 = 0;
+        while (true) {
+            C0579k c0579k = this.f6210a;
+            byte[] bArr = i;
+            byte[] bArr2 = h;
+            if (i4 >= size) {
+                Intrinsics.checkNotNull(interfaceC0577i2);
+                interfaceC0577i2.E(bArr);
+                interfaceC0577i2.F(c0579k);
+                interfaceC0577i2.E(bArr);
+                interfaceC0577i2.E(bArr2);
+                if (!z3) {
+                    return j4;
+                }
+                Intrinsics.checkNotNull(c0576h);
+                long j5 = j4 + c0576h.f8284b;
+                c0576h.d();
+                return j5;
+            }
+            C c4 = (C) list.get(i4);
+            C0334u c0334u = c4.f6205a;
+            Intrinsics.checkNotNull(interfaceC0577i2);
+            interfaceC0577i2.E(bArr);
+            interfaceC0577i2.F(c0579k);
+            interfaceC0577i2.E(bArr2);
+            if (c0334u != null) {
+                int size2 = c0334u.size();
+                for (int i5 = 0; i5 < size2; i5++) {
+                    interfaceC0577i2.Q(c0334u.b(i5)).E(f6209g).Q(c0334u.f(i5)).E(bArr2);
+                }
+            }
+            M m4 = c4.f6206b;
+            A contentType = m4.contentType();
+            if (contentType != null) {
+                interfaceC0577i2.Q("Content-Type: ").Q(contentType.f6199a).E(bArr2);
+            }
+            long contentLength = m4.contentLength();
+            if (contentLength != -1) {
+                interfaceC0577i2.Q("Content-Length: ").R(contentLength).E(bArr2);
+            } else if (z3) {
+                Intrinsics.checkNotNull(c0576h);
+                c0576h.d();
+                return -1L;
+            }
+            interfaceC0577i2.E(bArr2);
+            if (z3) {
+                j4 += contentLength;
+            } else {
+                m4.writeTo(interfaceC0577i2);
+            }
+            interfaceC0577i2.E(bArr2);
+            i4++;
+        }
+    }
+
+    @Override // e3.M
+    public final long contentLength() {
+        long j4 = this.f6213d;
+        if (j4 != -1) {
+            return j4;
+        }
+        long a2 = a(null, true);
+        this.f6213d = a2;
+        return a2;
+    }
+
+    @Override // e3.M
+    public final A contentType() {
+        return this.f6212c;
+    }
+
+    @Override // e3.M
+    public final void writeTo(InterfaceC0577i sink) {
+        Intrinsics.checkNotNullParameter(sink, "sink");
+        a(sink, false);
+    }
+}