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/ThreadState.java

@@ -0,0 +1,107 @@
+package kotlinx.coroutines;
+
+import com.google.android.gms.measurement.api.AppMeasurementSdk;
+import com.google.firebase.remoteconfig.RemoteConfigConstants;
+import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
+import kotlin.KotlinNothingValueException;
+import kotlin.Metadata;
+import kotlin.Unit;
+import kotlin.jvm.functions.Function1;
+
+/* JADX INFO: Access modifiers changed from: package-private */
+@Metadata(d1 = {"\u0000H\n\u0002\u0018\u0002\n\u0002\u0018\u0002\n\u0002\u0010\u0003\n\u0002\u0018\u0002\n\u0002\b\u0002\n\u0002\u0010\u0002\n\u0002\u0018\u0002\n\u0000\n\u0002\u0018\u0002\n\u0002\b\u0002\n\u0002\u0018\u0002\n\u0000\n\u0002\u0018\u0002\n\u0000\n\u0002\u0018\u0002\n\u0002\b\u0003\n\u0002\u0010\u0001\n\u0000\n\u0002\u0010\b\n\u0002\b\u0003\b\u0002\u0018\u00002#\u0012\u0015\u0012\u0013\u0018\u00010\u0002¢\u0006\f\b\u0003\u0012\b\b\u0004\u0012\u0004\b\b(\u0005\u0012\u0004\u0012\u00020\u00060\u0001j\u0002`\u0007B\r\u0012\u0006\u0010\b\u001a\u00020\t¢\u0006\u0002\u0010\nJ\u0006\u0010\u0012\u001a\u00020\u0006J\u0010\u0010\u0013\u001a\u00020\u00142\u0006\u0010\u0015\u001a\u00020\u0016H\u0002J\u0013\u0010\u0017\u001a\u00020\u00062\b\u0010\u0005\u001a\u0004\u0018\u00010\u0002H\u0096\u0002J\u0006\u0010\u0018\u001a\u00020\u0006R\t\u0010\u000b\u001a\u00020\fX\u0082\u0004R\u0010\u0010\r\u001a\u0004\u0018\u00010\u000eX\u0082\u000e¢\u0006\u0002\n\u0000R\u000e\u0010\b\u001a\u00020\tX\u0082\u0004¢\u0006\u0002\n\u0000R\u0016\u0010\u000f\u001a\n \u0011*\u0004\u0018\u00010\u00100\u0010X\u0082\u0004¢\u0006\u0002\n\u0000¨\u0006\u0019"}, d2 = {"Lkotlinx/coroutines/ThreadState;", "Lkotlin/Function1;", "", "Lkotlin/ParameterName;", AppMeasurementSdk.ConditionalUserProperty.NAME, "cause", "", "Lkotlinx/coroutines/CompletionHandler;", "job", "Lkotlinx/coroutines/Job;", "(Lkotlinx/coroutines/Job;)V", "_state", "Lkotlinx/atomicfu/AtomicInt;", "cancelHandle", "Lkotlinx/coroutines/DisposableHandle;", "targetThread", "Ljava/lang/Thread;", "kotlin.jvm.PlatformType", "clearInterrupt", "invalidState", "", RemoteConfigConstants.ResponseFieldKey.STATE, "", "invoke", "setup", "kotlinx-coroutines-core"}, k = 1, mv = {1, 9, 0}, xi = 48)
+/* loaded from: classes3.dex */
+public final class ThreadState implements Function1<Throwable, Unit> {
+    private static final /* synthetic */ AtomicIntegerFieldUpdater _state$volatile$FU = AtomicIntegerFieldUpdater.newUpdater(ThreadState.class, "_state$volatile");
+    private volatile /* synthetic */ int _state$volatile;
+    private DisposableHandle cancelHandle;
+    private final Job job;
+    private final Thread targetThread = Thread.currentThread();
+
+    public ThreadState(Job job) {
+        this.job = job;
+    }
+
+    private final /* synthetic */ int get_state$volatile() {
+        return this._state$volatile;
+    }
+
+    private final Void invalidState(int state) {
+        throw new IllegalStateException(("Illegal state " + state).toString());
+    }
+
+    private final /* synthetic */ void loop$atomicfu(Object obj, AtomicIntegerFieldUpdater atomicIntegerFieldUpdater, Function1<? super Integer, Unit> function1) {
+        while (true) {
+            function1.invoke(Integer.valueOf(atomicIntegerFieldUpdater.get(obj)));
+        }
+    }
+
+    private final /* synthetic */ void set_state$volatile(int i) {
+        this._state$volatile = i;
+    }
+
+    public final void clearInterrupt() {
+        AtomicIntegerFieldUpdater atomicIntegerFieldUpdater = _state$volatile$FU;
+        while (true) {
+            int i = atomicIntegerFieldUpdater.get(this);
+            if (i != 0) {
+                if (i != 2) {
+                    if (i == 3) {
+                        Thread.interrupted();
+                        return;
+                    } else {
+                        invalidState(i);
+                        throw new KotlinNothingValueException();
+                    }
+                }
+            } else if (_state$volatile$FU.compareAndSet(this, i, 1)) {
+                DisposableHandle disposableHandle = this.cancelHandle;
+                if (disposableHandle != null) {
+                    disposableHandle.dispose();
+                    return;
+                }
+                return;
+            }
+        }
+    }
+
+    @Override // kotlin.jvm.functions.Function1
+    public /* bridge */ /* synthetic */ Unit invoke(Throwable th) {
+        invoke2(th);
+        return Unit.INSTANCE;
+    }
+
+    public final void setup() {
+        int i;
+        this.cancelHandle = this.job.invokeOnCompletion(true, true, this);
+        AtomicIntegerFieldUpdater atomicIntegerFieldUpdater = _state$volatile$FU;
+        do {
+            i = atomicIntegerFieldUpdater.get(this);
+            if (i != 0) {
+                if (i == 2 || i == 3) {
+                    return;
+                }
+                invalidState(i);
+                throw new KotlinNothingValueException();
+            }
+        } while (!_state$volatile$FU.compareAndSet(this, i, 0));
+    }
+
+    /* renamed from: invoke, reason: avoid collision after fix types in other method */
+    public void invoke2(Throwable cause) {
+        int i;
+        AtomicIntegerFieldUpdater atomicIntegerFieldUpdater = _state$volatile$FU;
+        do {
+            i = atomicIntegerFieldUpdater.get(this);
+            if (i != 0) {
+                if (i == 1 || i == 2 || i == 3) {
+                    return;
+                }
+                invalidState(i);
+                throw new KotlinNothingValueException();
+            }
+        } while (!_state$volatile$FU.compareAndSet(this, i, 2));
+        this.targetThread.interrupt();
+        _state$volatile$FU.set(this, 3);
+    }
+}