radmin detection

# SPDX-FileCopyrightText: 2005 Michel Arboi
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.11123");
  script_version("2023-08-01T13:29:10+0000");
  script_tag(name:"last_modification", value:"2023-08-01 13:29:10 +0000 (Tue, 01 Aug 2023)");
  script_tag(name:"creation_date", value:"2005-11-03 14:08:04 +0100 (Thu, 03 Nov 2005)");
  script_tag(name:"cvss_base", value:"0.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:N");
  script_name("radmin detection");
  script_category(ACT_GATHER_INFO);
  script_tag(name:"qod_type", value:"remote_banner");
  script_copyright("Copyright (C) 2005 Michel Arboi");
  script_family("Malware");
  script_dependencies("find_service2.nasl");
  script_require_ports("Services/unknown", 4899);

  script_tag(name:"solution", value:"Disable it if you do not use it.");

  script_tag(name:"summary", value:"radmin is running on this port.

  Make sure that you use a strong password, otherwise an attacker
  may brute-force it and control your machine.

  If you did not install this on the computer, you may have
  been hacked into. See the references for more information.");

  script_xref(name:"URL", value:"http://www.secnap.com/security/radmin001.html");

  exit(0);
}

include("host_details.inc");
include("port_service_func.inc");

port = unknownservice_get_port( default:4899 );

soc = open_sock_tcp(port);
if (! soc) exit(0);

req = raw_string(0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x08, 0x08);
send(socket: soc, data: req);
#r = recv(socket: soc, length: 16);
r = recv(socket: soc, length: 6);
close(soc);

# I got :
# 0000000 001  \0  \0  \0   %  \0  \0 001 020  \b 001  \0  \0  \b  \0  \0
#         01 00 00 00 25 00 00 01 10 08 01 00 00 08 00 00
# 0000020  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0
#         00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
# 0000040  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0
#         00 00 00 00 00 00 00 00 00 00 00 00 00 00
# 0000056
#
# Noam Rathaus <[email protected]> saw different replies,
# depending on the security settings:
#  password security => 6th byte (r[5]) == 0
#  NTLM security     => 6th byte (r[5]) == 1
# I tried, and always got the same answer, whatever the security setting is.
# Odd...
#

#xp = raw_string(0x01, 0x00, 0x00, 0x00, 0x25, 0x00, 0x00, 0x01,
#                0x10, 0x08, 0x01, 0x00, 0x00, 0x08, 0x00, 0x00);

xp1 = "010000002500";
xp2 = "010000002501";


if (( xp1 >< hexstr(r) ) || ( xp2 >< hexstr(r) ))
{
  log_message(port:port);
  service_register(port:port, proto:"radmin");
  exit(0);
}