Module: Msf::Post::Linux::System
Instance Method Summary collapse
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#get_cpu_info ⇒ Hash
Gets basic information about the system’s CPU.
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#get_hostname ⇒ String
Gets the hostname of the system.
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#get_mount_path(filepath) ⇒ String
Gets the mount point of ‘filepath`.
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#get_path ⇒ String
Gets the $PATH environment variable.
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#get_shell_name ⇒ String
Gets the name of the current shell.
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#get_shell_pid ⇒ String
Gets the pid of the current shell.
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#get_suid_files(findpath = '/') ⇒ Array
Gathers all SUID files on the filesystem.
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#get_sysinfo ⇒ Object
Returns a Hash containing Distribution Name, Version and Kernel Information.
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#glibc_version ⇒ String
Gets the version of glibc.
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#has_gcc? ⇒ Boolean
Checks if the system has gcc installed.
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#interfaces ⇒ Array
Gets all the interfaces of the device.
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#ips ⇒ Array
Gets all the IP directions of the device.
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#listen_tcp_ports ⇒ Array
Parsing information based on: github.com/sensu-plugins/sensu-plugins-network-checks/blob/master/bin/check-netstat-tcp.rb.
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#listen_udp_ports ⇒ Array
Parsing information based on: github.com/sensu-plugins/sensu-plugins-network-checks/blob/master/bin/check-netstat-tcp.rb.
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#macs ⇒ Array
Gets all the macs of the device.
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#noexec?(file_path) ⇒ Boolean
Checks if ‘file_path` is mounted on a noexec mount point.
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#nosuid?(file_path) ⇒ Boolean
Checks if ‘file_path` is mounted on a nosuid mount point.
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#protected_hardlinks? ⇒ Boolean
Checks for protected hardlinks on the system.
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#protected_symlinks? ⇒ Boolean
Checks for protected symlinks on the system.
Methods included from Unix
#enum_user_directories, #get_groups, #get_session_pid, #get_users, #is_root?, #whoami
Methods included from File
#_append_file_powershell, #_append_file_unix_shell, #_can_echo?, #_read_file_meterpreter, #_read_file_powershell, #_read_file_powershell_fragment, #_shell_command_with_success_code, #_unix_max_line_length, #_win_ansi_append_file, #_win_ansi_write_file, #_win_bin_append_file, #_win_bin_write_file, #_write_file_meterpreter, #_write_file_powershell, #_write_file_powershell_fragment, #_write_file_unix_shell, #append_file, #attributes, #cd, #chmod, #copy_file, #dir, #directory?, #executable?, #exist?, #expand_path, #exploit_data, #exploit_source, #file?, #file_local_write, #file_remote_digestmd5, #file_remote_digestsha1, #file_remote_digestsha2, #immutable?, #initialize, #mkdir, #pwd, #read_file, #readable?, #rename_file, #rm_f, #rm_rf, #setuid?, #stat, #upload_and_chmodx, #upload_file, #writable?, #write_file
Methods included from Common
#clear_screen, #cmd_exec, #cmd_exec_get_pid, #cmd_exec_with_result, #command_exists?, #get_env, #get_envs, #initialize, #peer, #report_virtualization, #rhost, #rport
Instance Method Details
#get_cpu_info ⇒ Hash
Gets basic information about the system’s CPU.
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# File 'lib/msf/core/post/linux/system.rb', line 157 def get_cpu_info info = {} orig = read_file("/proc/cpuinfo").to_s cpuinfo = orig.split("\n\n")[0] # This is probably a more platform independent way to parse the results (compared to splitting and assigning preset indices to values) cpuinfo.split("\n").each do |l| info[:speed_mhz] = l.split(': ')[1].to_i if l.include? 'cpu MHz' info[:product] = l.split(': ')[1] if l.include? 'model name' info[:vendor] = l.split(': ')[1] if l.include? 'vendor_id' end info[:cores] = orig.split("\n\n").size info rescue raise "Could not get CPU information" end |
#get_hostname ⇒ String
Gets the hostname of the system
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# File 'lib/msf/core/post/linux/system.rb', line 177 def get_hostname if command_exists?("uname") hostname = cmd_exec('uname -n').to_s else hostname = read_file("/proc/sys/kernel/hostname").to_s.chomp end report_host({:host => rhost, :name => hostname}) hostname rescue raise 'Unable to retrieve hostname' end |
#get_mount_path(filepath) ⇒ String
Gets the mount point of ‘filepath`
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# File 'lib/msf/core/post/linux/system.rb', line 289 def get_mount_path(filepath) cmd_exec("df \"#{filepath}\" | tail -1").split(' ')[5] rescue raise "Unable to get mount path of #{filepath}" end |
#get_path ⇒ String
Gets the $PATH environment variable
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# File 'lib/msf/core/post/linux/system.rb', line 147 def get_path cmd_exec('echo $PATH').to_s rescue raise "Unable to determine path" end |
#get_shell_name ⇒ String
Gets the name of the current shell
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# File 'lib/msf/core/post/linux/system.rb', line 193 def get_shell_name if command_exists?("ps") psout = cmd_exec('ps -p $$').to_s psout.split("\n").last.split(' ')[3] else str_shell = cmd_exec("echo $0").split("-")[1] return str_shell end rescue raise 'Unable to gather shell name' end |
#get_shell_pid ⇒ String
Gets the pid of the current shell
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# File 'lib/msf/core/post/linux/system.rb', line 209 def get_shell_pid cmd_exec("echo $$").to_s end |
#get_suid_files(findpath = '/') ⇒ Array
Gathers all SUID files on the filesystem. NOTE: This uses the Linux ‘find` command. It will most likely take a while to get all files. Consider specifying a more narrow find path.
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# File 'lib/msf/core/post/linux/system.rb', line 137 def get_suid_files(findpath = '/') out = cmd_exec("find #{findpath} -perm -4000 -print -xdev").to_s.split("\n") out.delete_if {|i| i.include? 'Permission denied'} rescue raise "Could not retrieve all SUID files" end |
#get_sysinfo ⇒ Object
Returns a Hash containing Distribution Name, Version and Kernel Information
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# File 'lib/msf/core/post/linux/system.rb', line 13 def get_sysinfo system_data = {} etc_files = cmd_exec("ls /etc").split() kernel_version = cmd_exec("uname -a") system_data[:kernel] = kernel_version # Debian if etc_files.include?("debian_version") version = read_file("/etc/issue").gsub(/\n|\\n|\\l/,'').strip if kernel_version =~ /Ubuntu/ system_data[:distro] = "ubuntu" system_data[:version] = version else system_data[:distro] = "debian" system_data[:version] = version end # Amazon / CentOS elsif etc_files.include?('system-release') version = read_file('/etc/system-release').gsub(/\n|\\n|\\l/,'').strip if version.include? 'CentOS' system_data[:distro] = 'centos' elsif version.include? 'Fedora' system_data[:distro] = 'fedora' else system_data[:distro] = 'amazon' end system_data[:version] = version # Alpine elsif etc_files.include?('alpine-release') version = read_file('/etc/alpine-release').gsub(/\n|\\n|\\l/,'').strip system_data[:distro] = 'alpine' system_data[:version] = version # Fedora elsif etc_files.include?("fedora-release") version = read_file("/etc/fedora-release").gsub(/\n|\\n|\\l/,'').strip system_data[:distro] = "fedora" system_data[:version] = version # Oracle Linux elsif etc_files.include?("enterprise-release") version = read_file("/etc/enterprise-release").gsub(/\n|\\n|\\l/,'').strip system_data[:distro] = "oracle" system_data[:version] = version # RedHat elsif etc_files.include?("redhat-release") version = read_file("/etc/redhat-release").gsub(/\n|\\n|\\l/,'').strip system_data[:distro] = "redhat" system_data[:version] = version # Arch elsif etc_files.include?("arch-release") version = read_file("/etc/arch-release").gsub(/\n|\\n|\\l/,'').strip system_data[:distro] = "arch" system_data[:version] = version # Slackware elsif etc_files.include?("slackware-version") version = read_file("/etc/slackware-version").gsub(/\n|\\n|\\l/,'').strip system_data[:distro] = "slackware" system_data[:version] = version # Mandrake elsif etc_files.include?("mandrake-release") version = read_file("/etc/mandrake-release").gsub(/\n|\\n|\\l/,'').strip system_data[:distro] = "mandrake" system_data[:version] = version # SuSE elsif etc_files.include?("SuSE-release") version = read_file("/etc/SuSE-release").gsub(/\n|\\n|\\l/,'').strip system_data[:distro] = "suse" system_data[:version] = version # OpenSUSE elsif etc_files.include?("SUSE-brand") version = read_file("/etc/SUSE-brand").scan(/^VERSION\s*=\s*([\d\.]+)/).flatten.first system_data[:distro] = 'suse' system_data[:version] = version # Gentoo elsif etc_files.include?("gentoo-release") version = read_file("/etc/gentoo-release").gsub(/\n|\\n|\\l/,'').strip system_data[:distro] = "gentoo" system_data[:version] = version # Openwall elsif etc_files.include?("owl-release") version = read_file("/etc/owl-release").gsub(/\n|\\n|\\l/,'').strip system_data[:distro] = 'openwall' system_data[:version] = version # Generic elsif etc_files.include?("issue") version = read_file("/etc/issue").gsub(/\n|\\n|\\l/,'').strip system_data[:distro] = "linux" system_data[:version] = version # Others, could be a mismatch like ssh_login to cisco device else system_data[:distro] = "linux" system_data[:version] = '' end report_host({ :host => rhost, :os_name => system_data[:distro], :os_flavor => system_data[:version] }) return system_data end |
#glibc_version ⇒ String
Gets the version of glibc
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# File 'lib/msf/core/post/linux/system.rb', line 277 def glibc_version raise 'glibc is not installed' unless command_exists? 'ldd' cmd_exec('ldd --version').scan(/^ldd\s+\(.*\)\s+([\d.]+)/).flatten.first rescue raise 'Could not determine glibc version' end |
#has_gcc? ⇒ Boolean
Checks if the system has gcc installed
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# File 'lib/msf/core/post/linux/system.rb', line 217 def has_gcc? command_exists? 'gcc' rescue raise 'Unable to check for gcc' end |
#interfaces ⇒ Array
Gets all the interfaces of the device
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# File 'lib/msf/core/post/linux/system.rb', line 321 def interfaces result = [] data = cmd_exec("for fn in /sys/class/net/*; do echo $fn; done") parts = data.split("\n") parts.each do |line| line = line.split("/")[-1] result.insert(-1,line) end return result end |
#ips ⇒ Array
Gets all the IP directions of the device
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# File 'lib/msf/core/post/linux/system.rb', line 300 def ips lines = read_file("/proc/net/fib_trie") result = [] previous_line = "" lines.each_line do |line| if line.include?("/32 host LOCAL") previous_line = previous_line.split("-- ")[1].strip() if not result.include? previous_line result.insert(-1, previous_line) end end previous_line = line end return result end |
#listen_tcp_ports ⇒ Array
Parsing information based on: github.com/sensu-plugins/sensu-plugins-network-checks/blob/master/bin/check-netstat-tcp.rb
Gets all the listening tcp ports in the device
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# File 'lib/msf/core/post/linux/system.rb', line 355 def listen_tcp_ports ports = [] content = read_file('/proc/net/tcp') content.each_line do |line| if m = line.match(/^\s*\d+:\s+(.{8}|.{32}):(.{4})\s+(.{8}|.{32}):(.{4})\s+(.{2})/) connection_state = m[5].to_s if connection_state == "0A" connection_port = m[2].to_i(16) if ports.include?(connection_port) == false ports.insert(-1, connection_port) end end end end return ports end |
#listen_udp_ports ⇒ Array
Parsing information based on: github.com/sensu-plugins/sensu-plugins-network-checks/blob/master/bin/check-netstat-tcp.rb
Gets all the listening udp ports in the device
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# File 'lib/msf/core/post/linux/system.rb', line 377 def listen_udp_ports ports = [] content = read_file('/proc/net/udp') content.each_line do |line| if m = line.match(/^\s*\d+:\s+(.{8}|.{32}):(.{4})\s+(.{8}|.{32}):(.{4})\s+(.{2})/) connection_state = m[5].to_s if connection_state == "07" connection_port = m[2].to_i(16) if ports.include?(connection_port) == false ports.insert(-1, connection_port) end end end end return ports end |
#macs ⇒ Array
Gets all the macs of the device
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# File 'lib/msf/core/post/linux/system.rb', line 336 def macs result = [] str_macs = cmd_exec("for fn in /sys/class/net/*; do echo $fn; done") parts = str_macs.split("\n") parts.each do |line| rut = line + "/address" mac_array = read_file(rut) mac_array.each_line do |mac| result.insert(-1,mac.strip()) end end return result end |
#noexec?(file_path) ⇒ Boolean
Checks if ‘file_path` is mounted on a noexec mount point
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# File 'lib/msf/core/post/linux/system.rb', line 227 def noexec?(file_path) mount = read_file('/proc/mounts').to_s mount_path = get_mount_path(file_path) mount.lines.each do |l| return true if l =~ Regexp.new("#{mount_path} (.*)noexec(.*)") end false rescue raise 'Unable to check for noexec volume' end |
#nosuid?(file_path) ⇒ Boolean
Checks if ‘file_path` is mounted on a nosuid mount point
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# File 'lib/msf/core/post/linux/system.rb', line 242 def nosuid?(file_path) mount = read_file('/proc/mounts').to_s mount_path = get_mount_path(file_path) mount.lines.each do |l| return true if l =~ Regexp.new("#{mount_path} (.*)nosuid(.*)") end false rescue raise 'Unable to check for nosuid volume' end |
#protected_hardlinks? ⇒ Boolean
Checks for protected hardlinks on the system
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# File 'lib/msf/core/post/linux/system.rb', line 257 def protected_hardlinks? read_file('/proc/sys/fs/protected_hardlinks').to_s.strip.eql? '1' rescue raise 'Could not determine protected_hardlinks status' end |
#protected_symlinks? ⇒ Boolean
Checks for protected symlinks on the system
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# File 'lib/msf/core/post/linux/system.rb', line 267 def protected_symlinks? read_file('/proc/sys/fs/protected_symlinks').to_s.strip.eql? '1' rescue raise 'Could not determine protected_symlinks status' end |