How to install Broadcom BCM43142 wireless drivers on Kali Linux

Hi,

If you install kali linux or any other Debian based distros, and you have a Broadcom BCM43142 wireless device in your system, you will need to install a proprietary driver to get Wi-Fi work.

If you search this in internet, you will find several solutions like compiling the driver module and installing, or downloading the deb from launchpad etc. But there are cases that nothing will work!

So here is a simple trick to get that work:
Ubuntu is a debian-based operating system developed by Cannonical team. If  you install another debian based system, the stuffs that designed for ubuntu should work (Almost) in your system. Anyway, the proprietary driver for BCM43142 will work. To install the proprietary driver for Ubuntu in other Debian based systems, just add the Ubuntu repositories to your apt-sources.list.

This is a /etc/apt/sources.list of Ubuntu 14.04:

 # deb cdrom:[Ubuntu-GNOME 14.04 LTS _Trusty Tahr_ - Release amd64 (20140416.2)]/ trusty main multiverse restricted universe

 # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://in.archive.ubuntu.com/ubuntu/ trusty main restricted
deb-src http://in.archive.ubuntu.com/ubuntu/ trusty main restricted

 ## Major bug fix updates produced after the final release of the
## distribution.
deb http://in.archive.ubuntu.com/ubuntu/ trusty-updates main restricted
deb-src http://in.archive.ubuntu.com/ubuntu/ trusty-updates main restricted

 ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://in.archive.ubuntu.com/ubuntu/ trusty universe
deb-src http://in.archive.ubuntu.com/ubuntu/ trusty universe
deb http://in.archive.ubuntu.com/ubuntu/ trusty-updates universe
deb-src http://in.archive.ubuntu.com/ubuntu/ trusty-updates universe

 ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 
## team, and may not be under a free licence. Please satisfy yourself as to 
## your rights to use the software. Also, please note that software in 
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://in.archive.ubuntu.com/ubuntu/ trusty multiverse
deb-src http://in.archive.ubuntu.com/ubuntu/ trusty multiverse
deb http://in.archive.ubuntu.com/ubuntu/ trusty-updates multiverse
deb-src http://in.archive.ubuntu.com/ubuntu/ trusty-updates multiverse

 ## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://in.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://in.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse

 deb http://security.ubuntu.com/ubuntu trusty-security main restricted
deb-src http://security.ubuntu.com/ubuntu trusty-security main restricted
deb http://security.ubuntu.com/ubuntu trusty-security universe
deb-src http://security.ubuntu.com/ubuntu trusty-security universe
deb http://security.ubuntu.com/ubuntu trusty-security multiverse
deb-src http://security.ubuntu.com/ubuntu trusty-security multiverse

 ## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu trusty partner
# deb-src http://archive.canonical.com/ubuntu trusty partner

 ## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb http://extras.ubuntu.com/ubuntu trusty main
deb-src http://extras.ubuntu.com/ubuntu trusty main

Just copy this to your /etc/apt/sources.list file, or alternatively add

 
deb http://in.archive.ubuntu.com/ubuntu trusty main restricted

and do an "apt update". Ignore the errors that coming, and then run:

 sudo apt-get install bcmwl-kernel-source

 This may show a warning, but ignore all, finally it will install the wl module to your operating system. after all, your Wi-Fi will show up! 

 Then just remove the lines we are added from sources.list, and do a apt-get update. Things will now come normal :)

 Enjoy!

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