> 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/web-vulnerabilities/race-condition-attack/race-condition-file-write-pentesting-web.md).

# Escritura de archivos por condición de carrera

Cada vez que buscamos un directorio, un **shared-file.txt** archivo se crea y se almacena en:

<figure><img src="/files/50795607e3cece0d441229273c5ec13e1b2f4ac4" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/6d1596d4af9d945210e63e42d775d3eb619feb17" alt=""><figcaption></figcaption></figure>

Aquí está el **código** de RaceCondition-file-write:

<figure><img src="/files/1735fa49fd7fb862af4d5450aafbd1a281d3feca" alt=""><figcaption></figcaption></figure>

1. nosotros nosotros establecemos **en solicitudes del oyente** al filtrar por el campo que nos interesa:

```bash
mientras true; do curl -s -X GET 'http://localhost:5000/test' | grep -v "test"; done

```

2. Desde [Burp Suite](/es/hacking-tools/web/burpsuite.md), enviamos varias solicitudes al mismo tiempo a otra URL:

<figure><img src="/files/93f48516422bc4a2cc004ebc3b00f9cff56ec550" alt=""><figcaption></figcaption></figure>

3. Porque de vez en cuando se satura, nosotros **recibimos el código** de otro archivo:

<figure><img src="/files/4bfd3cc5ba4ef67363060c0e9ad2bc2cdc9caefa" alt=""><figcaption></figcaption></figure>


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