[BUG] slack token error when agent connected

[ghost5egy]

Empire Version

• Empire 3.x

OS Information (Linux flavor, Python version)

• OS: debian
• Python: 3

Describe the bug
I got this message when agent register on empire if I set the slack token :
TypeError: POST data should be bytes, an iterable of bytes, or a file object. It cannot be of type str.

the I lose the agent it goes to loop trying to register vise versa
To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
I think it's caused because of shifting from python 2 to python3 .

Screenshots
none
Additional context
nope

[Cx01N]

@ghost5egy We must have missed a few lines during the python3 conversion. I will see about getting this fixed in a future release. We also take PRs if you think you can fix it. Thanks.

[Cx01N]

@ghost5egy @Gl3bGl4z
I fixed the slack encoding issue, however, it looks like slack is dropping legacy API support and will discontinue token creation on May 5th. I recommend getting a new token ASAP before they drop that functionality. Especially since it may be some time before we update the slack functionality to work with the newer API.