> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/es/windows-vulnerabilities/binary-analysis/userinfo-exe-binary-analysis.md).

# Análisis binario de UserInfo.exe

Esta nota muestra un simple Windows `.NET` flujo de trabajo de análisis binario: ejecución controlada, observación del comportamiento e inspección en dnSpy para recuperar información sensible.

## Preparación

Prepara el entorno de laboratorio, transfiere el archivo y configura la resolución de nombres si es necesario.

<figure><img src="/files/c6dfbc6dab47bb103f47ec801901591c1e5cdcbe" alt="UserInfo.exe lab preparation"><figcaption></figcaption></figure>

<figure><img src="/files/f64371346144ca45183ead3dac452d674a3bb8be" alt="UserInfo.exe archive transferred"><figcaption></figcaption></figure>

## Ejecución controlada

```powershell
./UserInfo.exe find -first * -last *
```

<figure><img src="/files/a0b3778e255b4df9e58bfbdbc578774c25d2dcb0" alt="UserInfo.exe controlled execution"><figcaption></figcaption></figure>

## Analizar con dnSpy

{% embed url="<https://github.com/dnSpy/dnSpy>" %}

<figure><img src="/files/9c979690d66d690ef4a053c73e7c92474ab8da53" alt="UserInfo.exe opened in dnSpy"><figcaption></figcaption></figure>

Busca cadenas, funciones de autenticación, endpoints y secretos codificados.

<figure><img src="/files/3dae5b9df4db93fdd3b23319e34834ebef75c2b8" alt="Searching UserInfo.exe code in dnSpy"><figcaption></figcaption></figure>

Establece un punto de interrupción cerca de la ruta de código donde el secreto se vuelve legible.

<figure><img src="/files/0434c9aab3106134cff1cf9dc272f65a603839c2" alt="Breakpoint set in dnSpy"><figcaption></figcaption></figure>

<figure><img src="/files/18a0efe18fc927f7faf47ad166d3fa3e5b547878" alt="Recovered runtime secret in dnSpy"><figcaption></figcaption></figure>

## Puntos clave

* `.NET` Los binarios suelen ser fáciles de descompilar.
* Los secretos codificados deben considerarse comprometidos.
* El análisis estático debe combinarse con la ejecución controlada en un laboratorio.


---

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