Find OS/2 and Posix Subsystem over WMI - Windows

# SPDX-FileCopyrightText: 2009 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("1.3.6.1.4.1.25623.1.0.96007");
  script_version("2025-03-07T05:38:18+0000");
  script_tag(name:"last_modification", value:"2025-03-07 05:38:18 +0000 (Fri, 07 Mar 2025)");
  script_tag(name:"creation_date", value:"2009-10-23 12:32:24 +0200 (Fri, 23 Oct 2009)");
  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:"registry");
  script_name("Find OS/2 and Posix Subsystem over WMI - Windows");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2009 Greenbone AG");
  script_family("IT-Grundschutz");
  script_mandatory_keys("Compliance/Launch/GSHB", "Tools/Present/wmi");
  script_dependencies("smb_reg_service_pack.nasl", "GSHB/GSHB_WMI_OSInfo.nasl");

  script_tag(name:"summary", value:"Find OS/2 and Posix Subsystem over WMI.");

  exit(0);
}

include("wmi_file.inc");
include("smb_nt.inc");

host    = get_host_ip();
usrname = kb_smb_login();
domain  = kb_smb_domain();
if (domain){
  usrname = domain + '\\' + usrname;
}
passwd = kb_smb_password();

OSVER = get_kb_item("WMI/WMI_OSVER");
OSTYPE = get_kb_item("WMI/WMI_OSTYPE");
OSNAME = get_kb_item("WMI/WMI_OSNAME");
win_dir = get_kb_item("WMI/WMI_OSWINDIR");
win_dir = split(win_dir, sep:":", keep:0);
win_dir = win_dir[0] + ':\\' + win_dir[1];

if(!OSVER || OSVER >< "none"){
    set_kb_item(name:"WMI/SessionManagerOS2", value:"error");
    set_kb_item(name:"WMI/SessionManagerPosix", value:"error");
    set_kb_item(name:"WMI/SessionManager/log", value:"No access to SMB host.\nFirewall is activated or there is not a Windows system.");
    exit(0);
}

handle = wmi_connect(host:host, username:usrname, password:passwd);
handlereg = wmi_connect_reg(host:host, username:usrname, password:passwd);

if(!handle){
  set_kb_item(name:"WMI/SessionManagerOS2", value:"error");
  set_kb_item(name:"WMI/SessionManagerPosix", value:"error");
  set_kb_item(name:"WMI/SessionManager/log", value:"wmi_connect: WMI Connect failed.");
  wmi_close(wmi_handle:handle);
  wmi_close(wmi_handle:handlereg);
  exit(0);
}

if (OSVER != '5.2' || OSNAME >< 'Microsoft(R) Windows(R) XP Professional x64 Edition'){
    set_kb_item(name:"WMI/SessionManagerOS2", value:"error");
    set_kb_item(name:"WMI/SessionManagerPosix", value:"error");
    set_kb_item(name:"WMI/SessionManager/log", value:"The System is an " + OSNAME + " System");
    wmi_close(wmi_handle:handle);
    wmi_close(wmi_handle:handlereg);
    exit(0);
}

if(!isnull(win_dir))
{
  filespec1 = win_dir+"\\system32\\os2.exe";
  filespec2 = win_dir+"\\system32\\os2srv.exe";
  filespec3 = win_dir+"\\system32\\os2ss.exe";
  r1 = wmi_file_check_file_exists(handle:handle, filePath:filespec1);
  r2 = wmi_file_check_file_exists(handle:handle, filePath:filespec2);
  r3 = wmi_file_check_file_exists(handle:handle, filePath:filespec3);
        if( r1 == "1" && r2 == "1" && r3 == "1") {
                set_kb_item(name:"WMI/OS2", value:"on");
                } else {  set_kb_item(name:"WMI/OS2", value:"off");
        }
}else {
        log_message(port:0, proto: "IT-Grundschutz", data:string("Error getting SMB-File.\n"));
        set_kb_item(name:"WMI/OS2", value:"error");
      }

if(!isnull(win_dir))
{
  filespec1 = win_dir+"\\system32\\psxdll.dll";
  filespec2 = win_dir+"\\system32\\pax.exe";
  filespec3 = win_dir+"\\system32\\posix.exe";
  filespec4 = win_dir+"\\system32\\psxss.exe";
  r1 = wmi_file_check_file_exists(handle:handle, filePath:filespec1);
  r2 = wmi_file_check_file_exists(handle:handle, filePath:filespec2);
  r3 = wmi_file_check_file_exists(handle:handle, filePath:filespec3);
  r4 = wmi_file_check_file_exists(handle:handle, filePath:filespec4);
        if( r1 == "1" && r2 == "1" && r3 == "1" && r4 == "1") {
                set_kb_item(name:"WMI/Posix", value:"on");
                } else {  set_kb_item(name:"WMI/Posix", value:"off");
        }
}else {
        log_message(port:0, proto: "IT-Grundschutz", data:string("Error getting SMB-File.\n"));
        set_kb_item(name:"WMI/Posix", value:"error");
      }

keyexist = wmi_reg_enum_value(wmi_handle:handlereg, key:"SYSTEM\CurrentControlSet\Control\Session Manager\SubSystems");

if(!keyexist){
  log_message(port:0, proto: "IT-Grundschutz", data:"Registry Path not found.");
  set_kb_item(name:"WMI/SessionManagerOS2", value:"error");
  set_kb_item(name:"WMI/SessionManagerPosix", value:"error");
exit(0);
}

OS2 = wmi_reg_get_sz(wmi_handle:handlereg, key:"SYSTEM\CurrentControlSet\Control\Session Manager\SubSystems", key_name:"Os2");

posix = wmi_reg_get_sz(wmi_handle:handlereg, key:"SYSTEM\CurrentControlSet\Control\Session Manager\SubSystems", key_name:"Posix");

if(OS2) {
  set_kb_item(name:"WMI/SessionManagerOS2", value:"on");
}else{
  set_kb_item(name:"WMI/SessionManagerOS2", value:"off");
}

if(posix) {
  set_kb_item(name:"WMI/SessionManagerPosix", value:"on");
}else{
  set_kb_item(name:"WMI/SessionManagerPosix", value:"off");
}

wmi_close(wmi_handle:handle);
wmi_close(wmi_handle:handlereg);
exit(0);