This question is more or less an exact duplicate of this one, and as such you need to be extremely careful with how you do things. It is not recommend to do this. For more reasoning, see the question linked to above.
Although this might be off topic but I wont care about that as the question is too straightforward and simple.
Short answer: YES, You Can.
Long answer: You can add backtrack repository in your source file and install whatever software you want. here is the repository.
deb http://all.repository.backtrack-linux.org revolution main microverse non-free testing
deb http://32.repository.backtrack-linux.org revolution main microverse non-free testing
deb http://source.repository.backtrack-linux.org revolution main microverse non-free testing
append those lines to
/etc/apt/sources.list file and run
wget http://all.repository.backtrack-linux.org/backtrack.gpg -O – | sudo apt-key add -
to add backtrack gpg key, then run
sudo apt-get update
Then you can install any software from backtrack repo.