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Script for NUMA systems

Preamble

On modern NUMA systems, it’s always a good thing to know the total number of physical processors (nodes), the total number of real cores per processor, and if HT is enabled, the total number of virtual cores per processor (which is, of course, twice the number of real cores per […]

Integrating the IHaveBeenPwned API into Linux PAM

Introduction

I was writing another 4-page article for Linux User and Developer about Public APIs when I came out with the idea of showing the readers how to leverage the IHaveBeenPwned API using a Linux PAM module. The idea was to use their new “Pwned Passwords API v2” with the K-Anonymity […]

CTF Una-Al-Mes La casa de papel 1ª parte. Write-up

Obtención de los códigos web

Abrimos la página web del CTF: http://34.253.233.243/lacasadepapel/episodio1/puerta.php. Observamos un sencillo formulario web con dos cajas de texto, “Código 1” y “Código 2”. Antes de hacer pruebas a lo loco, comprobamos el código fuente de la página:

El código fuente de la página del CTF nos […]