[Fail] Failed to establish a backdoor session: True.

[KFriitz]

Hi, It is impossible for me to establish a session with netcat, the reverse shells generated by villain work correctly, but not the basic reverse shells like with netcat.

[t3l3machus]

Did you try any other netcat listener based payload?

Also, if able, please edit villain_core.py, comment out this part and try again:

let me know what happened if you do, thanks

[KFriitz]

Even commenting out the if condition I get the same result, I tried the same netcat reverse shell with a basic listener and it works, I also tried a linux rev shell with nc on my kali and it works too.

With the nc ELF binary :

[t3l3machus]

@RkDx I really don't know why, nobody had that issue before. I just checked it right now with a fresh download:

[t3l3machus]

Can you provide some info? Windows version etc

[KFriitz]

I just tried on two virtual machines with two different netcats and I have exactly the same result

[t3l3machus]

When you commented out the block I showed you did it produce any other error message? Try setting the listener on e.g. port 443 with -n just to see if it behaves the same.

With ELF bin in the screenshot you posted earlier it seems you got a session, was it working? did you run commands through villain?

[KFriitz]

By commenting the IF condition I didn't get any other message, the problem persists even when using a different port and concerning the nc under linux (ELF), the shell works correctly, I get the stdout of the executed commands

[t3l3machus]

@RkDx please, edit this part in villain_core.py:

to this:

And tell me what error you get, thanks.