mirror of
https://github.com/praetorian-inc/ChromeAlone
synced 2026-06-06 16:34:31 +00:00
Michael Weber
67 lines
2.3 KiB
Python
67 lines
2.3 KiB
Python
import hashlib
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import base64
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import urllib.parse
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def hex_to_chrome_alphabet(hex_string):
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"""Convert hex string to Chrome's a-p alphabet."""
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result = ""
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for hex_char in hex_string:
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val = int(hex_char, 16)
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result += chr(val + ord('a'))
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return result
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def generate_id_from_hash(hash_bytes):
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"""Generate Chrome extension ID from first 16 bytes of hash."""
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first_16_bytes = hash_bytes[:16]
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hex_string = ''.join([f'{b:02x}' for b in first_16_bytes])
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return hex_to_chrome_alphabet(hex_string)
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def create_web_bundle_id_from_public_key(public_key_bytes):
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"""Create a web bundle ID from an Ed25519 public key."""
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# Add the type suffix for Ed25519 (0x00, 0x01, 0x02)
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type_suffix = bytes([0x00, 0x01, 0x02])
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full_id = public_key_bytes + type_suffix
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# Base32 encode without padding and convert to lowercase
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encoded_id = base64.b32encode(full_id).decode('ascii').lower().rstrip('=')
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return encoded_id
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def get_chrome_app_id(public_key_base64):
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"""Generate Chrome app ID from base64-encoded public key."""
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# Decode base64 public key
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public_key_bytes = base64.b64decode(public_key_base64)
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# Create web bundle ID
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web_bundle_id = create_web_bundle_id_from_public_key(public_key_bytes)
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# Create manifest ID (the origin URL with trailing slash)
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manifest_id = f"isolated-app://{web_bundle_id}/"
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# First hash - generate manifest ID hash
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manifest_id_hash = hashlib.sha256()
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manifest_id_hash.update(manifest_id.encode('utf-8'))
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first_hash = manifest_id_hash.digest()
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# Second hash - generate final app ID
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app_id_hash = hashlib.sha256()
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app_id_hash.update(first_hash)
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second_hash = app_id_hash.digest()
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return generate_id_from_hash(second_hash)
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def main():
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# Test with the provided public key
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public_key = "kWvk3oUYfDR//zE9nJhA8CgIMulCPzXrWkMpXWRxp+g="
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web_bundle_id = create_web_bundle_id_from_public_key(base64.b64decode(public_key))
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print(f"Public Key (base64): {public_key}")
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print(f"Web Bundle ID: {web_bundle_id}")
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manifest_id = f"isolated-app://{web_bundle_id}/"
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print(f"Manifest ID: {manifest_id}")
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app_id = get_chrome_app_id(public_key)
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print(f"Generated App ID: {app_id}")
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print(f"LevelDB Key: web_apps-dt-{app_id}")
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if __name__ == "__main__":
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main() |