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/kotlinx/coroutines/CompletionStateKt.java

@@ -0,0 +1,44 @@
+package kotlinx.coroutines;
+
+import com.google.android.gms.measurement.api.AppMeasurementSdk;
+import com.google.firebase.remoteconfig.RemoteConfigConstants;
+import kotlin.Metadata;
+import kotlin.Result;
+import kotlin.ResultKt;
+import kotlin.Unit;
+import kotlin.coroutines.Continuation;
+import kotlin.jvm.functions.Function1;
+import kotlin.jvm.internal.SourceDebugExtension;
+
+@Metadata(d1 = {"\u00008\n\u0000\n\u0002\u0018\u0002\n\u0002\b\u0002\n\u0002\u0010\u0000\n\u0000\n\u0002\u0018\u0002\n\u0002\b\u0003\n\u0002\u0018\u0002\n\u0002\u0010\u0003\n\u0002\u0018\u0002\n\u0002\b\u0002\n\u0002\u0010\u0002\n\u0002\b\u0002\n\u0002\u0018\u0002\n\u0002\b\u0002\u001a1\u0010\u0000\u001a\b\u0012\u0004\u0012\u0002H\u00020\u0001\"\u0004\b\u0000\u0010\u00022\b\u0010\u0003\u001a\u0004\u0018\u00010\u00042\f\u0010\u0005\u001a\b\u0012\u0004\u0012\u0002H\u00020\u0006H\u0000¢\u0006\u0002\u0010\u0007\u001aF\u0010\b\u001a\u0004\u0018\u00010\u0004\"\u0004\b\u0000\u0010\u0002*\b\u0012\u0004\u0012\u0002H\u00020\u00012%\b\u0002\u0010\t\u001a\u001f\u0012\u0013\u0012\u00110\u000b¢\u0006\f\b\f\u0012\b\b\r\u0012\u0004\b\b(\u000e\u0012\u0004\u0012\u00020\u000f\u0018\u00010\nH\u0000¢\u0006\u0002\u0010\u0010\u001a+\u0010\b\u001a\u0004\u0018\u00010\u0004\"\u0004\b\u0000\u0010\u0002*\b\u0012\u0004\u0012\u0002H\u00020\u00012\n\u0010\u0011\u001a\u0006\u0012\u0002\b\u00030\u0012H\u0000¢\u0006\u0002\u0010\u0013¨\u0006\u0014"}, d2 = {"recoverResult", "Lkotlin/Result;", "T", RemoteConfigConstants.ResponseFieldKey.STATE, "", "uCont", "Lkotlin/coroutines/Continuation;", "(Ljava/lang/Object;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;", "toState", "onCancellation", "Lkotlin/Function1;", "", "Lkotlin/ParameterName;", AppMeasurementSdk.ConditionalUserProperty.NAME, "cause", "", "(Ljava/lang/Object;Lkotlin/jvm/functions/Function1;)Ljava/lang/Object;", "caller", "Lkotlinx/coroutines/CancellableContinuation;", "(Ljava/lang/Object;Lkotlinx/coroutines/CancellableContinuation;)Ljava/lang/Object;", "kotlinx-coroutines-core"}, k = 2, mv = {1, 9, 0}, xi = 48)
+@SourceDebugExtension({"SMAP\nCompletionState.kt\nKotlin\n*S Kotlin\n*F\n+ 1 CompletionState.kt\nkotlinx/coroutines/CompletionStateKt\n+ 2 StackTraceRecovery.kt\nkotlinx/coroutines/internal/StackTraceRecoveryKt\n*L\n1#1,67:1\n61#2,2:68\n61#2,2:70\n*S KotlinDebug\n*F\n+ 1 CompletionState.kt\nkotlinx/coroutines/CompletionStateKt\n*L\n21#1:68,2\n27#1:70,2\n*E\n"})
+/* loaded from: classes3.dex */
+public final class CompletionStateKt {
+    public static final <T> Object recoverResult(Object obj, Continuation<? super T> continuation) {
+        if (!(obj instanceof CompletedExceptionally)) {
+            return Result.m116constructorimpl(obj);
+        }
+        Result.Companion companion = Result.INSTANCE;
+        return Result.m116constructorimpl(ResultKt.createFailure(((CompletedExceptionally) obj).cause));
+    }
+
+    public static final <T> Object toState(Object obj, Function1<? super Throwable, Unit> function1) {
+        Throwable m119exceptionOrNullimpl = Result.m119exceptionOrNullimpl(obj);
+        if (m119exceptionOrNullimpl == null) {
+            return function1 != null ? new CompletedWithCancellation(obj, function1) : obj;
+        }
+        return new CompletedExceptionally(m119exceptionOrNullimpl, false, 2, null);
+    }
+
+    public static /* synthetic */ Object toState$default(Object obj, Function1 function1, int i, Object obj2) {
+        if ((i & 1) != 0) {
+            function1 = null;
+        }
+        return toState(obj, (Function1<? super Throwable, Unit>) function1);
+    }
+
+    public static final <T> Object toState(Object obj, CancellableContinuation<?> cancellableContinuation) {
+        Throwable m119exceptionOrNullimpl = Result.m119exceptionOrNullimpl(obj);
+        return m119exceptionOrNullimpl == null ? obj : new CompletedExceptionally(m119exceptionOrNullimpl, false, 2, null);
+    }
+}