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Upgrading Reverse Shells to be Fully Interactive
Popping a reverse shell is exciting, but it’s not quite the same as a fully interactive shell. You won’t have tab completion, you can’t run any interactive programs (including sudo), and if you press Ctrl+C, you will exit back to your local box, which sucks. So! Here’s how to upgrade your Linux reverse shell.
python -c "import pty; pty.spawn('/bin/bash')"
You should get a nicer looking prompt, but your job isn’t over yet. Press Ctrl+Z to background your reverse shell, then in your local machine run:
stty raw -echo fg
Things are going to look really messed up at this point, but don’t worry. Just type reset and hit return. You should be presented with a fully interactive shell. You’re welcome.
There’s still one little niggling thing that can happen, the shell might not be the correct height/width for your terminal. To fix this, go to your local machine and run:
stty size
This should return two numbers, which are the number of rows and columns in your terminal. For example’s sake let’s say this command returned 48 120 Head on back to your victim box’s shell and run the following.
stty -rows 48 -columns 120
You now have a beautiful interactive shell to brag about. Time to privesc!