117 lines
4.2 KiB
Nix
117 lines
4.2 KiB
Nix
# NixOS module for kippo honeypot ssh server
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# See all the options for configuration details.
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#
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# Default port is 2222. Recommend using something like this for port redirection to default SSH port:
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# networking.firewall.extraCommands = ''
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# iptables -t nat -A PREROUTING -i IN_IFACE -p tcp --dport 22 -j REDIRECT --to-port 2222'';
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#
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# Lastly: use this service at your own risk. I am working on a way to run this inside a VM.
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{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.kippo;
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in
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rec {
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options = {
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services.kippo = {
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enable = mkOption {
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default = false;
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type = types.bool;
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description = ''Enable the kippo honeypot ssh server.'';
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};
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port = mkOption {
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default = 2222;
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type = types.int;
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description = ''TCP port number for kippo to bind to.'';
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};
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hostname = mkOption {
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default = "nas3";
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type = types.string;
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description = ''Hostname for kippo to present to SSH login'';
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};
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varPath = mkOption {
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default = "/var/lib/kippo";
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type = types.string;
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description = ''Path of read/write files needed for operation and configuration.'';
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};
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logPath = mkOption {
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default = "/var/log/kippo";
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type = types.string;
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description = ''Path of log files needed for operation and configuration.'';
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};
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pidPath = mkOption {
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default = "/run/kippo";
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type = types.string;
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description = ''Path of pid files needed for operation.'';
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};
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extraConfig = mkOption {
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default = "";
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type = types.string;
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description = ''Extra verbatim configuration added to the end of kippo.cfg.'';
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};
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};
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};
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config = mkIf cfg.enable {
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environment.systemPackages = with pkgs.pythonPackages; [
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python twisted pycrypto pyasn1 ];
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environment.etc."kippo.cfg".text = ''
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# Automatically generated by NixOS.
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# See ${pkgs.kippo}/src/kippo.cfg for details.
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[honeypot]
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log_path = ${cfg.logPath}
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download_path = ${cfg.logPath}/dl
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filesystem_file = ${cfg.varPath}/honeyfs
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filesystem_file = ${cfg.varPath}/fs.pickle
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data_path = ${cfg.varPath}/data
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txtcmds_path = ${cfg.varPath}/txtcmds
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public_key = ${cfg.varPath}/keys/public.key
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private_key = ${cfg.varPath}/keys/private.key
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ssh_port = ${toString cfg.port}
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hostname = ${cfg.hostname}
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${cfg.extraConfig}
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'';
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users.extraUsers = singleton {
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name = "kippo";
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description = "kippo web server privilege separation user";
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uid = 108; # why does config.ids.uids.kippo give an error?
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};
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users.extraGroups = singleton { name = "kippo";gid=108; };
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systemd.services.kippo = with pkgs; {
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description = "Kippo Web Server";
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after = [ "network.target" ];
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wantedBy = [ "multi-user.target" ];
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environment.PYTHONPATH = "${pkgs.kippo}/src/:${pkgs.pythonPackages.pycrypto}/lib/python2.7/site-packages/:${pkgs.pythonPackages.pyasn1}/lib/python2.7/site-packages/:${pkgs.pythonPackages.python}/lib/python2.7/site-packages/:${pkgs.pythonPackages.twisted}/lib/python2.7/site-packages/:.";
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preStart = ''
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if [ ! -d ${cfg.varPath}/ ] ; then
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mkdir -p ${cfg.pidPath}
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mkdir -p ${cfg.logPath}/tty
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mkdir -p ${cfg.logPath}/dl
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mkdir -p ${cfg.varPath}/keys
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cp ${pkgs.kippo}/src/honeyfs ${cfg.varPath} -r
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cp ${pkgs.kippo}/src/fs.pickle ${cfg.varPath}/fs.pickle
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cp ${pkgs.kippo}/src/data ${cfg.varPath} -r
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cp ${pkgs.kippo}/src/txtcmds ${cfg.varPath} -r
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chmod u+rw ${cfg.varPath} -R
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chmod u+rw ${cfg.pidPath}
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chown kippo.kippo ${cfg.varPath} -R
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chown kippo.kippo ${cfg.pidPath}
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chown kippo.kippo ${cfg.logPath} -R
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chmod u+rw ${cfg.logPath} -R
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fi
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'';
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serviceConfig.ExecStart = "${pkgs.pythonPackages.twisted}/bin/twistd -y ${pkgs.kippo}/src/kippo.tac --syslog --rundir=${cfg.varPath}/ --pidfile=${cfg.pidPath}/kippo.pid --prefix=kippo -n";
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serviceConfig.PermissionsStartOnly = true;
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serviceConfig.User = "kippo";
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serviceConfig.Group = "kippo";
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};
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};
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}
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