SurgeMail Detection (SMTP)

# SPDX-FileCopyrightText: 2022 Greenbone AG
# 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("1.3.6.1.4.1.25623.1.0.148164");
  script_version("2023-10-31T05:06:37+0000");
  script_tag(name:"last_modification", value:"2023-10-31 05:06:37 +0000 (Tue, 31 Oct 2023)");
  script_tag(name:"creation_date", value:"2022-05-23 08:51:51 +0000 (Mon, 23 May 2022)");
  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_tag(name:"qod_type", value:"remote_banner");

  script_name("SurgeMail Detection (SMTP)");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2022 Greenbone AG");
  script_family("Product detection");
  script_dependencies("smtpserver_detect.nasl", "check_smtp_helo.nasl");
  script_mandatory_keys("smtp/surgemail/detected");

  script_tag(name:"summary", value:"SMTP based detection of SurgeMail.");

  exit(0);
}

include("misc_func.inc");
include("port_service_func.inc");
include("smtp_func.inc");

port = smtp_get_port(default: 25);

banner = smtp_get_banner(port: port);

# 220 example.com SurgeSMTP (Version 7.1f-15) http://surgemail.com
# 220 SMTP example.com (Surgemail Version 3.7b6-6)
if (banner && banner =~ "Surge(mail|SMTP)") {
  version = "unknown";

  set_kb_item(name: "surgemail/detected", value: TRUE);
  set_kb_item(name: "surgemail/smtp/detected", value: TRUE);
  set_kb_item(name: "surgemail/smtp/port", value: port);
  set_kb_item(name: "surgemail/smtp/" + port + "/concluded", value: banner);

  # 220 SMTP example.com (Surgemail Version 3.7b6-6)
  vers = eregmatch(pattern: "Surgemail Version ([^)]+)", string: banner, icase: TRUE);
  if (!isnull(vers[1]))
    version = vers[1];

  set_kb_item(name: "surgemail/smtp/" + port + "/version", value: version);
}

exit(0);