Thanks to the tireless efforts of @purehate_, the PTH suite is now available in the Backtrack repositories. I had a minor issue installing, so I'll walk through the steps I went through to debug the issue. YMMV.
1) run "apt-get update" to update the package list on your local computer.
2) run "apt-cache search pth-suite". If you see something similar to :
then all you need to do is "apt-get install pth-suite" and it will install.
3) If you do NOT see the listing for it, then you will probably need to add the testing repository as a source for apt. Edit your /etc/apt/sources.list to look like this:
On my backtrack dev machine, the line beginning with "deb http://source" was commented out. In that case simply uncomment out the line, save the file, and rerun steps 1 and 2. If you have additional problems, lemme know and I'll see how I can help out.
To Utilize the New Tools:
The executables are located in /pentest/passwords/pth/bin. If you want to use then automagically, then consider modifying your PATH to put this path first. Consider appending the following line to /root/.bashrc if you find yourself using these utilities consistently. IE:
# export PATH=/pentest/passwords/pth/bin:$PATH
Keep in mind that there could be Samba executables in your normal path. Use the 'which' command to see what path is being used for a particular binary.