if header[:4] == OZIP_MAGIC: # Check for version version = struct.unpack('<I', header[4:8])[0] if len(header) >= 8 else 0 return ('STANDARD_OZIP', version) elif header[:4] == b'ZTE\x00': return ('ZTE_OZIP', 1) else: return ('UNKNOWN', 0) def extract_standard_ozip(input_path, output_dir): """Extract standard OZIP (Asus style).""" with open(input_path, 'rb') as f: # Read full file (for small-to-medium OZIPs) data = f.read()

| Tool | Platform | Notes | |------|----------|-------| | ) | Windows GUI | Best for Asus | | ozip2img (Linux) | Command line | Supports ZTE | | Firmware Extractor (Android app) | Android | Extracts on-device | Troubleshooting | Error | Solution | |-------|----------| | Not a valid OZIP file | File may be corrupted or from an unsupported OEM. | | unsupported OZIP variant | Try changing XOR_KEY or search for a device-specific extractor. | | MemoryError | File is too large; modify script to use chunked reading. | This complete text provides everything needed to understand, run, and troubleshoot an OZIP Extractor Tool.

def detect_ozip_type(filepath): """Detect OZIP variant by reading header.""" with open(filepath, 'rb') as f: header = f.read(12)

output_dir = sys.argv[2] if len(sys.argv) > 2 else "ozip_output" Path(output_dir).mkdir(parents=True, exist_ok=True)

#!/usr/bin/env python3 """ OZIP Extractor Tool v1.0 Author: Open Source Purpose: Extract .ozip firmware files from Asus, ZTE, and similar Android devices. """ import sys import os import struct import zlib from pathlib import Path Configuration ------------------------------------------------------------ OZIP_MAGIC = b'OZIP' # Common OZIP file signature XOR_KEY = 0x6D # Typical obfuscation key (may vary)

# Check magic if data[:4] != OZIP_MAGIC: raise ValueError("Not a valid OZIP file")

# Often just raw ext4 or sparse image output_img = os.path.join(output_dir, 'system.img') with open(output_img, 'wb') as out: out.write(data) print(f"[+] Extracted ZTE OZIP to: output_img") Main function ------------------------------------------------------------ def main(): if len(sys.argv) < 2: print("Usage: ozip_extractor.py <input.ozip> [output_directory]") print("\nExample: ozip_extractor.py firmware.ozip ./extracted") sys.exit(1)

# Decrypt using XOR decrypted = xor_decrypt(data[4:], XOR_KEY)