September 2024
Intermediate to advanced
444 pages
12h 30m
Spanish
Content preview from Seguridad de las Aplicaciones Web, 2ª Edición
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Capítulo 4. Encontrar subdominios
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Para examinar y probar los puntos finales de la API, primero debes estar familiarizado con la estructura de dominios que utiliza una aplicación web. Hoy en día es raro que se utilice un único dominio para servir a una aplicación web en su totalidad. Lo más frecuente es que las aplicaciones web se dividan en dominios de cliente y servidor como mínimo, además del conocido https://www frente a sólo https://. Ser capaz de encontrar y registrar iterativamente los subdominios que alimentan una aplicación web es una útil técnica de primer reconocimiento contra esa aplicación web.
Múltiples aplicaciones por dominio
Supongamos en que estamos intentando mapear las aplicaciones web de MegaBank para realizar mejor una prueba de penetración de caja negra patrocinada por ese banco. Sabemos que MegaBank tiene una aplicación en la que los usuarios pueden iniciar sesión y acceder a sus cuentas bancarias. Esta aplicación se encuentra en https://www.mega-bank.com.
Tenemos especial curiosidad por saber si MegaBank tiene otros servidores accesibles en Internet vinculados al nombre de dominio mega-bank.com. Sabemos que MegaBank tiene un programa de recompensas por fallos, y el alcance de ese programa cubre el dominio principal mega-bank.com de forma bastante exhaustiva. Como resultado, cualquier vulnerabilidad fácil de encontrar en mega-bank. com ya ...
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