Kali Linux Install Telegram
Telegram is available within the Kali's repository, but the version is little bit older than the current version of Telegram for Desktop. Here is short script how to download and deploy the latest version via the command line.
cd ~/Downloads
wget https://telegram.org/dl/desktop/linux -O telegram-desktop-linux.tar.xz
tar -xvf telegram-desktop-linux.tar.xz
mv Telegram ~/.local/share/TelegramDesktop
~/.local/share/TelegramDesktop/Telegram &
rm telegram-desktop-linux.tar.xz
Penultimate command above will start the Telegram application. One it is started it will create automatically the necessary .desktop files, so you can find Telegram within the GNOME's applications list. Also you could setup Telegram to automatically start at user log-in from within its settings.
If you want to put a Telegram icon at the desktop execute the following command. Note Telegram must be started at least one time before running the find/copy command below.
find ~/.local -type f -name 'appimagekit*Telegram*.desktop' -exec cp {} ~/Desktop/Telegram.desktop \;
sed -r '/^(Version|SingleMainWindow)/d' ~/Desktop/Telegram.desktop -i
desktop-file-install --mode=0755 --dir=$HOME/Desktop ~/Desktop/Telegram.desktop
dbus-launch gio set ~/Desktop/Telegram.desktop "metadata::trusted" true