Author Archives: pentestingshop

Setup a IMSI-Catcher with a HACKRF in Kali linux

First what is a IMSI Catcher. An IMSI-catcher is a program that shows you IMSI numbers, country, brand, and operator of cellphones around you. The IMSI is used in any mobile network that interconnects with other networks. An IMSI is usually presented as a 15-digit number but can be shorter. But if you want to learn […]

Install HackRF tools in Kali linux

First of all these tools can be installed also on other linux systems. Like Ubuntu or other Debian based linux like Kali linux. I will now show you how to install it in Kali linux, since this is the OS we use for most tutorials. Before we start installing the tools in Kali linux make […]


What is OpenBTS? OpenBTS is a Unix application that uses a software radio to present a GSM air interface to standard 2G GSM handset and uses a SIP softswitch or PBX to connect calls. (You might even say that OpenBTS is a simplified form of IMS that works with 2G feature-phone handsets.) The combination of the […]

GNU Arm toolchain

This page will describe the procedure for compiling a GNU ARM toolchain. We will build a toolchain consisting of: GCC 4.8.2 Binutils 2.21.1 Newlib 1.19 Getting the buildscript First of all, create a directory you want to use for building the toolchain we are going to do this under the root folder so open up […]


libosmocore is a library with various utility functions that were originally developed as part of the OpenBSC project, but which are of a more generic nature and thus useful to (at least) other programs that we develop in the sphere of Free Software / Open Source mobile communications. There is no clear scope of it. […]

OsmocomBB Getting Started

I will be doing this for demo purposes in a Virtual Machine running Kali Linux 2.0 64Bit But it’s best to do this on a native installed Linux System This page will describe how to compile the firmware, the host utilities and how to use them. If you haven’t done so already, checkout PreliminaryRequirements Compiling […]

OsmocomBB Introduction

OsmocomBB is an Free Software / Open Source GSM Baseband software implementation. It intends to completely replace the need for a proprietary GSM baseband software, such as drivers for the GSM analog and digital baseband (integrated and external) peripherals the GSM phone-side protocol stack, from layer 1 up to layer 3 In short: By using […]