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/d0/s.java

@@ -0,0 +1,293 @@
+package d0;
+
+import android.text.Editable;
+import android.text.SpannableStringBuilder;
+import java.lang.reflect.Array;
+import java.util.ArrayList;
+
+/* loaded from: classes.dex */
+public final class s extends SpannableStringBuilder {
+
+    /* renamed from: a, reason: collision with root package name */
+    public final Class f6152a;
+
+    /* renamed from: b, reason: collision with root package name */
+    public final ArrayList f6153b;
+
+    public s(Class cls, CharSequence charSequence) {
+        super(charSequence);
+        this.f6153b = new ArrayList();
+        m3.d.i(cls, "watcherClass cannot be null");
+        this.f6152a = cls;
+    }
+
+    public final void a() {
+        int i = 0;
+        while (true) {
+            ArrayList arrayList = this.f6153b;
+            if (i >= arrayList.size()) {
+                return;
+            }
+            ((r) arrayList.get(i)).f6151b.incrementAndGet();
+            i++;
+        }
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Editable, java.lang.Appendable
+    public final Editable append(CharSequence charSequence) {
+        super.append(charSequence);
+        return this;
+    }
+
+    public final void b() {
+        e();
+        int i = 0;
+        while (true) {
+            ArrayList arrayList = this.f6153b;
+            if (i >= arrayList.size()) {
+                return;
+            }
+            ((r) arrayList.get(i)).onTextChanged(this, 0, length(), length());
+            i++;
+        }
+    }
+
+    public final r c(Object obj) {
+        int i = 0;
+        while (true) {
+            ArrayList arrayList = this.f6153b;
+            if (i >= arrayList.size()) {
+                return null;
+            }
+            r rVar = (r) arrayList.get(i);
+            if (rVar.f6150a == obj) {
+                return rVar;
+            }
+            i++;
+        }
+    }
+
+    public final boolean d(Object obj) {
+        if (obj != null) {
+            return this.f6152a == obj.getClass();
+        }
+        return false;
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Editable
+    public final Editable delete(int i, int i4) {
+        super.delete(i, i4);
+        return this;
+    }
+
+    public final void e() {
+        int i = 0;
+        while (true) {
+            ArrayList arrayList = this.f6153b;
+            if (i >= arrayList.size()) {
+                return;
+            }
+            ((r) arrayList.get(i)).f6151b.decrementAndGet();
+            i++;
+        }
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Spanned
+    public final int getSpanEnd(Object obj) {
+        r c4;
+        if (d(obj) && (c4 = c(obj)) != null) {
+            obj = c4;
+        }
+        return super.getSpanEnd(obj);
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Spanned
+    public final int getSpanFlags(Object obj) {
+        r c4;
+        if (d(obj) && (c4 = c(obj)) != null) {
+            obj = c4;
+        }
+        return super.getSpanFlags(obj);
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Spanned
+    public final int getSpanStart(Object obj) {
+        r c4;
+        if (d(obj) && (c4 = c(obj)) != null) {
+            obj = c4;
+        }
+        return super.getSpanStart(obj);
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Spanned
+    public final Object[] getSpans(int i, int i4, Class cls) {
+        if (this.f6152a != cls) {
+            return super.getSpans(i, i4, cls);
+        }
+        r[] rVarArr = (r[]) super.getSpans(i, i4, r.class);
+        Object[] objArr = (Object[]) Array.newInstance((Class<?>) cls, rVarArr.length);
+        for (int i5 = 0; i5 < rVarArr.length; i5++) {
+            objArr[i5] = rVarArr[i5].f6150a;
+        }
+        return objArr;
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Editable
+    public final Editable insert(int i, CharSequence charSequence) {
+        super.insert(i, charSequence);
+        return this;
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Spanned
+    public final int nextSpanTransition(int i, int i4, Class cls) {
+        if (cls == null || this.f6152a == cls) {
+            cls = r.class;
+        }
+        return super.nextSpanTransition(i, i4, cls);
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Spannable
+    public final void removeSpan(Object obj) {
+        r rVar;
+        if (d(obj)) {
+            rVar = c(obj);
+            if (rVar != null) {
+                obj = rVar;
+            }
+        } else {
+            rVar = null;
+        }
+        super.removeSpan(obj);
+        if (rVar != null) {
+            this.f6153b.remove(rVar);
+        }
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Editable
+    public final /* bridge */ /* synthetic */ Editable replace(int i, int i4, CharSequence charSequence) {
+        replace(i, i4, charSequence);
+        return this;
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Spannable
+    public final void setSpan(Object obj, int i, int i4, int i5) {
+        if (d(obj)) {
+            r rVar = new r(obj);
+            this.f6153b.add(rVar);
+            obj = rVar;
+        }
+        super.setSpan(obj, i, i4, i5);
+    }
+
+    @Override // android.text.SpannableStringBuilder, java.lang.CharSequence
+    public final CharSequence subSequence(int i, int i4) {
+        return new s(this.f6152a, this, i, i4);
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Editable, java.lang.Appendable
+    public final SpannableStringBuilder append(CharSequence charSequence) {
+        super.append(charSequence);
+        return this;
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Editable
+    public final SpannableStringBuilder delete(int i, int i4) {
+        super.delete(i, i4);
+        return this;
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Editable
+    public final SpannableStringBuilder insert(int i, CharSequence charSequence) {
+        super.insert(i, charSequence);
+        return this;
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Editable
+    public final /* bridge */ /* synthetic */ Editable replace(int i, int i4, CharSequence charSequence, int i5, int i6) {
+        replace(i, i4, charSequence, i5, i6);
+        return this;
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Editable, java.lang.Appendable
+    public final Appendable append(CharSequence charSequence) {
+        super.append(charSequence);
+        return this;
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Editable
+    public final Editable insert(int i, CharSequence charSequence, int i4, int i5) {
+        super.insert(i, charSequence, i4, i5);
+        return this;
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Editable
+    public final SpannableStringBuilder replace(int i, int i4, CharSequence charSequence) {
+        a();
+        super.replace(i, i4, charSequence);
+        e();
+        return this;
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Editable, java.lang.Appendable
+    public final Editable append(char c4) {
+        super.append(c4);
+        return this;
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Editable
+    public final SpannableStringBuilder insert(int i, CharSequence charSequence, int i4, int i5) {
+        super.insert(i, charSequence, i4, i5);
+        return this;
+    }
+
+    public s(Class cls, s sVar, int i, int i4) {
+        super(sVar, i, i4);
+        this.f6153b = new ArrayList();
+        m3.d.i(cls, "watcherClass cannot be null");
+        this.f6152a = cls;
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Editable, java.lang.Appendable
+    public final SpannableStringBuilder append(char c4) {
+        super.append(c4);
+        return this;
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Editable, java.lang.Appendable
+    public final Appendable append(char c4) {
+        super.append(c4);
+        return this;
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Editable
+    public final SpannableStringBuilder replace(int i, int i4, CharSequence charSequence, int i5, int i6) {
+        a();
+        super.replace(i, i4, charSequence, i5, i6);
+        e();
+        return this;
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Editable, java.lang.Appendable
+    public final Editable append(CharSequence charSequence, int i, int i4) {
+        super.append(charSequence, i, i4);
+        return this;
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Editable, java.lang.Appendable
+    public final SpannableStringBuilder append(CharSequence charSequence, int i, int i4) {
+        super.append(charSequence, i, i4);
+        return this;
+    }
+
+    @Override // android.text.SpannableStringBuilder, android.text.Editable, java.lang.Appendable
+    public final Appendable append(CharSequence charSequence, int i, int i4) {
+        super.append(charSequence, i, i4);
+        return this;
+    }
+
+    @Override // android.text.SpannableStringBuilder
+    public final SpannableStringBuilder append(CharSequence charSequence, Object obj, int i) {
+        super.append(charSequence, obj, i);
+        return this;
+    }
+}