The aim and objective of this thesis is double. Firstly, produces knowledge base about publicly available on market equipment that can offer trusted solutions to mobile security researchers to perform penetration tests on mobile network infrastructures. Furthermore, it comes to underline the simplicity with a malicious actor by only having on its possession a set of low-cost equipment, can introduce an asymmetric threat to a large scale of users without the latter become aware of that being directed. Finally, our thesis points those proven vulnerabilities that exist over the years on the worldwide and old GSM network and the lack of security measures and mechanisms that could protect the GSM subscribers.