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[MESSAGES CONTROL]
disable=too-few-public-methods,missing-docstring,too-many-arguments,no-member

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# pymonalisa
A Python library to decrypt IQIYI DRM License Ticket using the MonaLisa Content Decryption Module.
## Installation
```shell
pip install pymonalisa
```
Run `pymonalisa --help` to view available CLI functions.
## Devices
To use pymonalisa, you need a MonaLisa device file (.mld). These device files load the WASM module required to process IQIYI DRM License Tickets correctly.
## License Processing
Process a MonaLisa encoded license and extract decryption keys:
```shell
pymonalisa license "AAAADgMwAADECisAAAdoS7HZAQEASDVEQ0lELVYzLVAxLTIwMjUwNTE5LTE0NDM1Mi1NRDc0N0RBNS0xNzQ0NjQ0OTk3LUExMTJERwEQcMHbn2aue/wLGYFpS2aNngMCADhAACCzbv21P1LuugXC34EhhYOfBQm1K7vNBcxClOM9nTS50AIQxPPew5UYQhKhOg3UrJqXLQQBAwMDADkBADCvjimPScsXNIyb9HxbzkHRB7Bhv3J8Pvpgm54TFhIKSwH32SedaLf7dJ6PRExsjyoBAQECASADBAA4QAAgIreHYYp2nI86fJDaAxR6CJyvM1h+OKXATIn9aj43O2ADEIDB259mrnv8CxmBaUtmjZ4EAQMEBQATARBwwdufZq57/AsZgWlLZo2eAP8GADQBEIDB259mrnv8CxmBaUtmjZ4AIM11WGlDSqV01Aw8PkaTUEgYPVduGGQpxMTnWbNx7qpP" device.mld
```
### Options
- `-t, --key-type`: Filter keys by type (CONTENT or FULL). Default: FULL
- `-v, --version`: Print version information
## Usage
An example code snippet:
```python
from pymonalisa.cdm import Cdm
from pymonalisa.module import Module
from pymonalisa.license import License
from pymonalisa.types import KeyType
# Load the MonaLisa device module
module = Module.load("path/to/device.mld")
# Initialize CDM from module
cdm = Cdm.from_module(module)
# Open a new session
session_id = cdm.open()
# Create license object from base64 encoded license data
license_data = "AAAADgMwAADECisAAAdoS7HZAQEASDVEQ0lELVYzLVAxLTIwMjUwNTE5LTE0NDM1Mi1NRDc0N0RBNS0xNzQ0NjQ0OTk3LUExMTJERwEQcMHbn2aue/wLGYFpS2aNngMCADhAACCzbv21P1LuugXC34EhhYOfBQm1K7vNBcxClOM9nTS50AIQxPPew5UYQhKhOg3UrJqXLQQBAwMDADkBADCvjimPScsXNIyb9HxbzkHRB7Bhv3J8Pvpgm54TFhIKSwH32SedaLf7dJ6PRExsjyoBAQECASADBAA4QAAgIreHYYp2nI86fJDaAxR6CJyvM1h+OKXATIn9aj43O2ADEIDB259mrnv8CxmBaUtmjZ4EAQMEBQATARBwwdufZq57/AsZgWlLZo2eAP8GADQBEIDB259mrnv8CxmBaUtmjZ4AIM11WGlDSqV01Aw8PkaTUEgYPVduGGQpxMTnWbNx7qpP"
license_obj = License(license_data)
# Parse the license
cdm.parse_license(session_id, license_obj)
# Get content keys
keys = cdm.get_keys(session_id, KeyType.CONTENT)
# Print extracted keys
for key in keys:
print(f"{key.key.hex()}") # Content key only
# or for full key info:
# print(f"{key.kid.hex()}:{key.key.hex()}")
# Close the session
cdm.close(session_id)
```
## Key Types
- `CONTENT`: Returns only the content decryption KEY
- `FULL`: Returns both Key ID and content key in KID:KEY format
## Notes
- This implementation is designed specifically for IQIYI DRM content
- The library currently focuses on content key extraction for decrypting IQIYI BBTS streams
- LicenseVersion 3 and below are supported
- Keys are typically returned in hexadecimal format
## TODO
- Add support for LicenseVersion up to 3
## Credits
Thanks to xhlove and duck.
## License
This project is intended for educational and research purposes only.

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__version__ = "0.1.2"
__authors__ = ["ReiDoBrega", "duck", "xhlove"]
from .cdm import Cdm
from .module import Module
from .license import License
from .exceptions import (
MonalisaError,
MonalisaLicenseError,
MonalisaModuleError,
MonalisaSessionError
)
from .types import KeyType, Key
__all__ = [
"Cdm",
"Module",
"License",
"Key",
"KeyType",
"MonalisaError",
"MonalisaLicenseError",
"MonalisaModuleError",
"MonalisaSessionError"
]

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import re
import base64
import uuid
from typing import Dict, List, Optional, Union
import wasmtime
from pymonalisa.module import Module
from pymonalisa.license import License
from pymonalisa.types import Key, KeyType
from pymonalisa.exceptions import MonalisaSessionError, MonalisaLicenseError
from pymonalisa.utils import get_env_strings
class Cdm:
"""MonaLisa Content Decryption Module"""
def __init__(self, module: Module):
"""
Initialize CDM with module
Args:
module: MonaLisa module instance
"""
self.module = module
self._sessions: Dict[str, 'Session'] = {}
@classmethod
def from_module(cls, module: Module) -> 'Cdm':
"""
Create CDM from module
Args:
module: MonaLisa module instance
Returns:
Cdm: CDM instance
"""
return cls(module)
def open(self) -> str:
"""
Open new CDM session
Returns:
str: Session ID
"""
session_id = str(uuid.uuid4())
store = self.module.create_store()
session = Session(session_id, self.module, store)
session.initialize()
self._sessions[session_id] = session
return session_id
def close(self, session_id: str):
"""
Close CDM session
Args:
session_id: Session ID to close
"""
if session_id in self._sessions:
self._sessions[session_id].cleanup()
del self._sessions[session_id]
def get_license_challenge(self, session_id: str, ticket: str):
return License(ticket)
def parse_license(self, session_id: str, license: Union[License, str, bytes]):
"""
Parse license and extract keys directly
Args:
session_id: Session ID
license: License data (MonaLisa license string/bytes)
"""
session = self._get_session(session_id)
if not isinstance(license, License):
license = License(license)
session.parse_license(license)
def get_keys(self, session_id: str, key_type: Optional[KeyType] = KeyType.CONTENT) -> List[Key]:
"""
Get keys from session
Args:
session_id: Session ID
key_type: Optional key type filter
Returns:
List[Key]: List of keys
"""
session = self._get_session(session_id)
return session.get_keys(key_type)
def _get_session(self, session_id: str) -> 'Session':
"""Get session by ID"""
if session_id not in self._sessions:
raise MonalisaSessionError(f"Session not found: {session_id}")
return self._sessions[session_id]
def __del__(self):
"""Cleanup all sessions on destruction"""
for session_id in list(self._sessions.keys()):
self.close(session_id)
class Session:
"""MonaLisa CDM session"""
# Memory configuration constants
DYNAMIC_BASE = 6065008
DYNAMICTOP_PTR = 821968
LICENSE_KEY_OFFSET = 0x5C8C0C
LICENSE_KEY_LENGTH = 16
def __init__(self, session_id: str, module: Module, store: wasmtime.Store):
"""Initialize session"""
self.session_id = session_id
self.module = module
self.store = store
self.instance = None
self.memory = None
self.exports = {}
self._ctx = None
self._keys: List[Key] = []
self._initialized = False
def initialize(self):
"""Initialize WASM instance and context"""
if self._initialized:
return
try:
# Create memory
memory_type = wasmtime.MemoryType(wasmtime.Limits(256, 256))
self.memory = wasmtime.Memory(self.store, memory_type)
# Set up dynamic memory pointer
self._write_i32(self.DYNAMICTOP_PTR, self.DYNAMIC_BASE)
# Build imports
imports = self._build_imports()
# Initialize WASM instance
self.instance = wasmtime.Instance(self.store, self.module.module, imports)
# Get exports
self.exports = {
'___wasm_call_ctors': self.instance.exports(self.store)["s"],
'_monalisa_context_alloc': self.instance.exports(self.store)["D"],
'monalisa_set_license': self.instance.exports(self.store)["F"],
'_monalisa_set_canvas_id': self.instance.exports(self.store)["t"],
'_monalisa_version_get': self.instance.exports(self.store)["A"],
'monalisa_get_line_number': self.instance.exports(self.store)["v"],
'stackAlloc': self.instance.exports(self.store)["N"],
'stackSave': self.instance.exports(self.store)["L"],
'stackRestore': self.instance.exports(self.store)["M"],
}
# Initialize MonaLisa context
self.exports['___wasm_call_ctors'](self.store)
self._ctx = self.exports['_monalisa_context_alloc'](self.store)
self._initialized = True
except Exception as e:
raise MonalisaSessionError(f"Failed to initialize session: {e}")
def parse_license(self, license_: License):
"""Parse license and extract keys directly"""
try:
# Use the base64 string format for WASM module
license_str = license_.b64
# Set license in WASM module
ret = self._ccall('monalisa_set_license', int, self._ctx, license_str, len(license_str), '0')
if ret != 0:
raise MonalisaLicenseError(f"License validation failed with code: {ret}")
# Extract license key from memory
key_hex = self._extract_license_key()
key_bytes = bytes.fromhex(key_hex)
# Extract CID from license for KID generation
m = re.search(r'DCID-[A-Z0-9]+-[A-Z0-9]+-\d{8}-\d{6}-[A-Z0-9]+-\d{10}-[A-Z0-9]+', base64.b64decode(license_str).decode('ascii', errors='ignore'))
if m:
kid = uuid.uuid5(uuid.NAMESPACE_DNS, m.group())
else:
kid = uuid.UUID(int=0) # default if fails
# Create key object (assuming CONTENT key for now)
key = Key(
kid=kid.bytes,
key=key_bytes,
type=KeyType.CONTENT
)
self._keys.append(key)
except Exception as e:
raise MonalisaLicenseError(f"Failed to parse license: {e}")
def get_keys(self, key_type: Optional[KeyType] = None) -> List[Key]:
"""Get keys from session"""
if key_type:
return [key for key in self._keys if key.type == key_type]
return self._keys.copy()
def cleanup(self):
"""Cleanup session resources"""
self._keys.clear()
self._ctx = None
self.instance = None
self.memory = None
self._initialized = False
def _extract_license_key(self) -> str:
"""Extract license key from memory"""
data = self.memory.data_ptr(self.store)
data_len = self.memory.data_len(self.store)
if self.LICENSE_KEY_OFFSET + self.LICENSE_KEY_LENGTH > data_len:
raise MonalisaLicenseError("License key offset beyond memory bounds")
# Read key bytes from memory
import ctypes
mem_ptr = ctypes.cast(data, ctypes.POINTER(ctypes.c_ubyte * data_len))
key_bytes = bytes(mem_ptr.contents[self.LICENSE_KEY_OFFSET:self.LICENSE_KEY_OFFSET + self.LICENSE_KEY_LENGTH])
return key_bytes.hex()
def _ccall(self, func_name: str, return_type: type, *args):
"""Call WASM function with argument conversion"""
stack = 0
converted_args = []
for arg in args:
if isinstance(arg, str):
if stack == 0:
stack = self.exports['stackSave'](self.store)
max_length = (len(arg) << 2) + 1
ptr = self.exports['stackAlloc'](self.store, max_length)
self._string_to_utf8(arg, ptr, max_length)
converted_args.append(ptr)
elif isinstance(arg, list):
if stack == 0:
stack = self.exports['stackSave'](self.store)
ptr = self.exports['stackAlloc'](self.store, len(arg))
self._write_array_to_memory(arg, ptr)
converted_args.append(ptr)
else:
converted_args.append(arg)
result = self.exports[func_name](self.store, *converted_args)
if stack != 0:
self.exports['stackRestore'](self.store, stack)
# Convert return value
if return_type == str:
return self._utf8_to_string(result)
elif return_type == bool:
return bool(result)
return result
def _write_i32(self, addr: int, value: int):
"""Write 32-bit integer to memory"""
data = self.memory.data_ptr(self.store)
import ctypes
mem_ptr = ctypes.cast(data, ctypes.POINTER(ctypes.c_int32))
mem_ptr[addr >> 2] = value
def _read_i32(self, addr: int) -> int:
"""Read 32-bit integer from memory"""
data = self.memory.data_ptr(self.store)
import ctypes
mem_ptr = ctypes.cast(data, ctypes.POINTER(ctypes.c_int32))
return mem_ptr[addr >> 2]
def _string_to_utf8(self, data: str, ptr: int, max_length: int) -> int:
"""Convert string to UTF-8 and write to memory"""
encoded = data.encode('utf-8')
write_length = min(len(encoded), max_length - 1)
mem_data = self.memory.data_ptr(self.store)
import ctypes
mem_ptr = ctypes.cast(mem_data, ctypes.POINTER(ctypes.c_ubyte))
for i in range(write_length):
mem_ptr[ptr + i] = encoded[i]
mem_ptr[ptr + write_length] = 0 # null terminator
return write_length
def _write_array_to_memory(self, array: List, ptr: int):
"""Write array to memory"""
mem_data = self.memory.data_ptr(self.store)
import ctypes
mem_ptr = ctypes.cast(mem_data, ctypes.POINTER(ctypes.c_ubyte))
for i, val in enumerate(array):
mem_ptr[ptr + i] = val
return ptr
def _utf8_to_string(self, ptr: int) -> str:
"""Convert UTF-8 from memory to string"""
if ptr == 0:
return ''
mem_data = self.memory.data_ptr(self.store)
data_len = self.memory.data_len(self.store)
if ptr >= data_len:
return ''
import ctypes
mem_ptr = ctypes.cast(mem_data, ctypes.POINTER(ctypes.c_ubyte))
# Find null terminator
length = 0
while ptr + length < data_len and mem_ptr[ptr + length] != 0:
length += 1
# Extract bytes and decode
data = bytes(mem_ptr[ptr:ptr + length])
return data.decode('utf-8')
def _write_ascii_to_memory(self, string: str, buffer: int, dont_add_null: int = 0):
"""Write ASCII string to memory"""
mem_data = self.memory.data_ptr(self.store)
import ctypes
mem_ptr = ctypes.cast(mem_data, ctypes.POINTER(ctypes.c_ubyte))
encoded = string.encode('utf-8')
for i, byte_val in enumerate(encoded):
mem_ptr[buffer + i] = byte_val
if dont_add_null == 0:
mem_ptr[buffer + len(encoded)] = 0
def _build_imports(self):
"""Build import object with required external functions"""
# System call stubs
def sys_fcntl64(param_0: int, param_1: int, param_2: int) -> int:
return 0
def fd_write(param_0: int, param_1: int, param_2: int, param_3: int) -> int:
return 0
def fd_close(param_0: int) -> int:
return 0
def sys_ioctl(param_0: int, param_1: int, param_2: int) -> int:
return 0
def sys_open(param_0: int, param_1: int, param_2: int) -> int:
return 0
def sys_rmdir(param_0: int) -> int:
return 0
def sys_unlink(param_0: int) -> int:
return 0
def clock() -> int:
return 0
def time(param_0: int) -> int:
return 0
def emscripten_run_script(param_0: int):
pass
def fd_seek(param_0: int, param_1: int, param_2: int, param_3: int, param_4: int) -> int:
return 0
def emscripten_resize_heap(param_0: int) -> int:
return 0
def fd_read(param_0: int, param_1: int, param_2: int, param_3: int) -> int:
return 0
def emscripten_run_script_string(param_0: int) -> int:
return 0
def emscripten_run_script_int(param_0: int) -> int:
return 1
def emscripten_memcpy_big(dest: int, src: int, num: int) -> int:
mem_data = self.memory.data_ptr(self.store)
data_len = self.memory.data_len(self.store)
if num is None:
num = data_len - 1
import ctypes
mem_ptr = ctypes.cast(mem_data, ctypes.POINTER(ctypes.c_ubyte))
# Copy memory
for i in range(num):
if dest + i < data_len and src + i < data_len:
mem_ptr[dest + i] = mem_ptr[src + i]
return dest
def environ_get(environ_ptr: int, environ_buf: int) -> int:
buf_size = 0
strings = get_env_strings()
for index, string in enumerate(strings):
ptr = environ_buf + buf_size
self._write_i32(environ_ptr + index * 4, ptr)
self._write_ascii_to_memory(string, ptr)
buf_size += len(string) + 1
return 0
def environ_sizes_get(penviron_count: int, penviron_buf_size: int) -> int:
strings = get_env_strings()
self._write_i32(penviron_count, len(strings))
buf_size = sum(len(string) + 1 for string in strings)
self._write_i32(penviron_buf_size, buf_size)
return 0
# Create function types and instances
imports = [
wasmtime.Func(self.store, wasmtime.FuncType([wasmtime.ValType.i32(), wasmtime.ValType.i32(), wasmtime.ValType.i32()], [wasmtime.ValType.i32()]), sys_fcntl64),
wasmtime.Func(self.store, wasmtime.FuncType([wasmtime.ValType.i32(), wasmtime.ValType.i32(), wasmtime.ValType.i32(), wasmtime.ValType.i32()], [wasmtime.ValType.i32()]), fd_write),
wasmtime.Func(self.store, wasmtime.FuncType([wasmtime.ValType.i32()], [wasmtime.ValType.i32()]), fd_close),
wasmtime.Func(self.store, wasmtime.FuncType([wasmtime.ValType.i32(), wasmtime.ValType.i32(), wasmtime.ValType.i32()], [wasmtime.ValType.i32()]), sys_ioctl),
wasmtime.Func(self.store, wasmtime.FuncType([wasmtime.ValType.i32(), wasmtime.ValType.i32(), wasmtime.ValType.i32()], [wasmtime.ValType.i32()]), sys_open),
wasmtime.Func(self.store, wasmtime.FuncType([wasmtime.ValType.i32()], [wasmtime.ValType.i32()]), sys_rmdir),
wasmtime.Func(self.store, wasmtime.FuncType([wasmtime.ValType.i32()], [wasmtime.ValType.i32()]), sys_unlink),
wasmtime.Func(self.store, wasmtime.FuncType([], [wasmtime.ValType.i32()]), clock),
wasmtime.Func(self.store, wasmtime.FuncType([wasmtime.ValType.i32()], [wasmtime.ValType.i32()]), time),
wasmtime.Func(self.store, wasmtime.FuncType([wasmtime.ValType.i32()], []), emscripten_run_script),
wasmtime.Func(self.store, wasmtime.FuncType([wasmtime.ValType.i32(), wasmtime.ValType.i32(), wasmtime.ValType.i32(), wasmtime.ValType.i32(), wasmtime.ValType.i32()], [wasmtime.ValType.i32()]), fd_seek),
wasmtime.Func(self.store, wasmtime.FuncType([wasmtime.ValType.i32(), wasmtime.ValType.i32(), wasmtime.ValType.i32()], [wasmtime.ValType.i32()]), emscripten_memcpy_big),
wasmtime.Func(self.store, wasmtime.FuncType([wasmtime.ValType.i32()], [wasmtime.ValType.i32()]), emscripten_resize_heap),
wasmtime.Func(self.store, wasmtime.FuncType([wasmtime.ValType.i32(), wasmtime.ValType.i32()], [wasmtime.ValType.i32()]), environ_get),
wasmtime.Func(self.store, wasmtime.FuncType([wasmtime.ValType.i32(), wasmtime.ValType.i32()], [wasmtime.ValType.i32()]), environ_sizes_get),
wasmtime.Func(self.store, wasmtime.FuncType([wasmtime.ValType.i32(), wasmtime.ValType.i32(), wasmtime.ValType.i32(), wasmtime.ValType.i32()], [wasmtime.ValType.i32()]), fd_read),
wasmtime.Func(self.store, wasmtime.FuncType([wasmtime.ValType.i32()], [wasmtime.ValType.i32()]), emscripten_run_script_string),
wasmtime.Func(self.store, wasmtime.FuncType([wasmtime.ValType.i32()], [wasmtime.ValType.i32()]), emscripten_run_script_int),
self.memory,
]
return imports

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pymonalisa/pymonalisa/exceptions.py Normal file
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class MonalisaError(Exception):
"""Base exception for all MonaLisa operations"""
pass
class MonalisaLicenseError(MonalisaError):
"""Exception raised for license-related errors"""
pass
class MonalisaModuleError(MonalisaError):
"""Exception raised for module/WASM module errors"""
pass
class MonalisaSessionError(MonalisaError):
"""Exception raised for session management errors"""
pass

54
pymonalisa/pymonalisa/license.py Normal file
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import base64
from typing import Union
class License:
"""MonaLisa license representation"""
def __init__(self, data: Union[str, bytes]):
"""
Initialize License
Args:
data: License data (base64 string or raw bytes)
"""
if isinstance(data, str):
try:
self.data = base64.b64decode(data)
self.data_b64 = data
except Exception:
# If not base64, treat as raw string
self.data = data.encode('utf-8')
self.data_b64 = base64.b64encode(self.data).decode('utf-8')
else:
self.data = data
self.data_b64 = base64.b64encode(data).decode('utf-8')
@classmethod
def from_ticket(cls, ticket_data: Union[str, bytes]) -> 'License':
"""
Create License from TICKET data
Args:
ticket_data: ticket data (base64 string)
Returns:
License: License instance
"""
return cls(ticket_data)
@property
def raw(self) -> bytes:
"""Get raw license data"""
return self.data
@property
def b64(self) -> str:
"""Get base64 encoded license data"""
return self.data_b64
def __str__(self) -> str:
return self.data_b64
def __repr__(self) -> str:
return f"License(data='{self.data_b64}')"

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pymonalisa/pymonalisa/main.py Normal file
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import logging
import click
import cloup
from loggpy import logging, Logger
from datetime import datetime
from pathlib import Path
from typing import Optional
from pymonalisa import __version__
from pymonalisa.cdm import Cdm
from pymonalisa.module import Module
from pymonalisa.license import License
from pymonalisa.types import KeyType
from pymonalisa.exceptions import (
MonalisaError,
MonalisaLicenseError,
MonalisaModuleError,
MonalisaSessionError
)
@cloup.group(
name='pymonalisa',
invoke_without_command=True,
context_settings=cloup.Context.settings(
help_option_names=["-h", "--help"],
max_content_width=116,
align_option_groups=False,
align_sections=True,
formatter_settings=cloup.HelpFormatter.settings(
indent_increment=3,
col1_max_width=50,
col_spacing=3,
theme=cloup.HelpTheme(
invoked_command=cloup.Style(fg="cyan"),
heading=cloup.Style(fg="bright_white", bold=True),
col1=cloup.Style(fg="bright_green"),
),
),
),
help=click.style(
text="A Python library to decrypt IQIYI DRM License Ticket",
fg='green',
dim=True,
overline=True,
strikethrough=True,
blink=True,
bold=True,
),
epilog=click.style(
text="""
\b
Made for fun only by ReiDoBrega.
\b
Thanks to xhlove and duck
""",
fg='blue',
bold=True,
italic=True,
)
)
@cloup.option("-v", "--version", is_flag=True, default=False, help="Print version information.")
def main(version: bool) -> None:
"""Python MonaLisa CDM implementation"""
Logger.mount(level=logging.INFO)
log = Logger('pymonalisa')
current_year = datetime.now().year
copyright_years = f"2025-{current_year}" if current_year > 2025 else "2025"
log.info("pymonalisa version %s Copyright (c) %s pymonalisa Team", __version__, copyright_years)
log.info("MonaLisa Content Decryption Module for Python")
log.info("Run 'pymonalisa --help' for help")
if version:
return
@main.command(name="license")
@cloup.argument("license_data", type=str)
@cloup.argument("device_path", type=cloup.Path(exists=True, path_type=Path))
@cloup.option_group(
"Key filtering options",
cloup.option(
"-t", "--key-type",
type=cloup.Choice(["CONTENT", "FULL"], case_sensitive=False),
default="CONTENT",
help="Filter keys by type"
),
)
def license_(
license_data: str,
device_path: Path,
key_type: Optional[str],
) -> None:
"""
Process a MonaLisa encoded license and extract decryption keys.
LICENSE_DATA: Base64 encoded MonaLisa license string
DEVICE_PATH: Path to MonaLisa device file (.mld)
Example:
pymonalisa license "AIUACgMAAAAAAAAAAAQChgACATADhwAnAgAg3UBbUdVCWXAjkgoUgmICmHvomvZai0jGglWe+oaQC+M..." device.mld
"""
log = logging.getLogger("license")
# Validate inputs
if not device_path.is_file():
log.error(f"Module file not found: {device_path}")
return
try:
log.info(f"Loading module: {device_path}")
module = Module.load(device_path)
log.info(f"Loaded module successfully")
log.info("Initializing CDM...")
cdm = Cdm.from_module(module)
log.info("CDM initialized successfully")
log.info("Opening CDM session...")
session_id = cdm.open()
log.info(f"Session opened: {session_id}")
log.info("Processing license data...")
license_obj = License(license_data)
log.info("Parsing license and extracting keys...")
cdm.parse_license(session_id, license_obj)
log.info("License parsed successfully")
keys = cdm.get_keys(session_id, KeyType.CONTENT) # CONTENT only for now
if not keys:
log.warning("No keys found in license")
cdm.close(session_id)
return
log.info(f"Found {len(keys)} keys:")
for key in keys: # One only always, dont sure about others verions up LicenseVersion 3
# NOTE: we can handle here but the key_type always will be CONTENT, to decrypt the IQIYI bbts we need the KEY only, not the KID
if key_type == "CONTENT":
log.info(f"{key.key.hex()}")
else:
log.info(f"{key.kid.hex()}:{key.key.hex()}")
cdm.close(session_id)
log.info("Session closed successfully")
except MonalisaModuleError as e:
log.error(f"Module error: {e}")
except MonalisaLicenseError as e:
log.error(f"License error: {e}")
except MonalisaSessionError as e:
log.error(f"Session error: {e}")
except MonalisaError as e:
log.error(f"MonaLisa error: {e}")
except Exception as e:
log.error(f"Unexpected error: {e}")
if log.isEnabledFor(logging.DEBUG):
import traceback
log.debug(traceback.format_exc())
if __name__ == "__main__":
main()

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import json
from pathlib import Path
from typing import Union, Dict, Any
import wasmtime
from pymonalisa.exceptions import MonalisaModuleError
class Module:
"""MonaLisa module representation with WASM module"""
def __init__(self, wasm_path: Union[str, Path], metadata: Dict[str, Any] = None):
"""
Initialize Device with WASM module
Args:
wasm_path: Path to MonaLisa WASM file (.wat or .wasm)
metadata: Optional module metadata
"""
self.wasm_path = Path(wasm_path)
self.metadata = metadata or {}
self._engine = None
self._module = None
self._validate_and_load()
def _validate_and_load(self):
"""Validate and load WASM module"""
if not self.wasm_path.exists():
raise MonalisaModuleError(f"WASM file not found: {self.wasm_path}")
try:
# Initialize engine
self._engine = wasmtime.Engine()
# Load WASM file
if self.wasm_path.suffix.lower() == '.wat':
self._module = wasmtime.Module.from_file(self._engine, str(self.wasm_path))
else:
wasm_bytes = self.wasm_path.read_bytes()
self._module = wasmtime.Module(self._engine, wasm_bytes)
except Exception as e:
raise MonalisaModuleError(f"Failed to load WASM module: {e}")
@classmethod
def load(cls, module_path: Union[str, Path]) -> 'Module':
"""
Load module from .mld (MonaLisa Device) file
Args:
module_path: Path to .mld file containing module info
Returns:
Module: Loaded module instance
"""
module_path = Path(module_path)
if not module_path.exists():
raise MonalisaModuleError(f"Device file not found: {module_path}")
try:
with open(module_path, 'r') as f:
device_data = json.load(f)
wasm_path = device_data.get('wasm_path')
if not wasm_path:
raise MonalisaModuleError("Device file missing wasm_path")
# Resolve relative path
if not Path(wasm_path).is_absolute():
wasm_path = module_path.parent / wasm_path
metadata = device_data.get('metadata', {})
return cls(wasm_path, metadata)
except json.JSONDecodeError:
raise MonalisaModuleError(f"Invalid module file format: {module_path}")
except Exception as e:
raise MonalisaModuleError(f"Failed to load module: {e}")
def save(self, module_path: Union[str, Path]):
"""
Save module to .mld file
Args:
module_path: Path where to save the device file
"""
module_path = Path(module_path)
device_data = {
'wasm_path': str(self.wasm_path),
'metadata': self.metadata
}
try:
with open(module_path, 'w') as f:
json.dump(device_data, f, indent=2)
except Exception as e:
raise MonalisaModuleError(f"Failed to save device: {e}")
def create_store(self) -> wasmtime.Store:
"""Create fresh store instance for WASM execution"""
return wasmtime.Store(self._engine)
@property
def engine(self) -> wasmtime.Engine:
"""Get WASM engine"""
return self._engine
@property
def module(self) -> wasmtime.Module:
"""Get WASM module"""
return self._module
def __repr__(self) -> str:
return f"Device(wasm_path='{self.wasm_path}')"

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pymonalisa/pymonalisa/types.py Normal file
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from enum import Enum
from dataclasses import dataclass
from typing import Optional
class KeyType(Enum):
"""Key types for MonaLisa keys"""
CONTENT = "CONTENT"
SIGNING = "SIGNING"
OTT = "OTT"
OPERATOR_SESSION = "OPERATOR_SESSION"
@dataclass
class Key:
"""Represents a MonaLisa key"""
kid: bytes
key: bytes
type: KeyType
permissions: Optional[list] = None
def __str__(self) -> str:
return f"[{self.type.value}] {self.kid.hex()}:{self.key.hex()}"

22
pymonalisa/pymonalisa/utils.py Normal file
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from typing import List
def get_env_strings() -> List[str]:
return [
'USER=web_user',
'LOGNAME=web_user',
'PATH=/',
'PWD=/',
'HOME=/home/web_user',
'LANG=zh_CN.UTF-8',
'_=./this.program'
]
def bytes_to_hex(data: bytes) -> str:
"""Convert bytes to uppercase hex string"""
return data.hex().upper()
def hex_to_bytes(hex_str: str) -> bytes:
"""Convert hex string to bytes"""
return bytes.fromhex(hex_str)

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pymonalisa/pyproject.toml Normal file
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[build-system]
requires = ["poetry-core>=1.0.0"]
build-backend = "poetry.core.masonry.api"
[tool.poetry]
name = "pymonalisa"
version = "0.1.2"
description = "pymonalisa - A Python library to decrypt IQIYI DRM License Ticket"
license = "CC BY-NC-ND 4.0"
authors = ["ReiDoBrega", "duck", "xhlove"]
readme = "README.md"
repository = "https://github.com/ReiDoBrega/pymonalisa"
keywords = ["python", "drm", "monalisa", "iqcom", "iqiyi", "wasm"]
classifiers = [
"Development Status :: 5 - Production/Stable",
"Intended Audience :: Developers",
"Intended Audience :: End Users/Desktop",
"Natural Language :: English",
"Operating System :: OS Independent",
"Topic :: Multimedia :: Video",
"Topic :: Security :: Cryptography",
"Topic :: Software Development :: Libraries :: Python Modules"
]
include = [
{ path = "README.md", format = "sdist" },
{ path = "LICENSE", format = "sdist" },
]
[tool.poetry.urls]
"Issues" = "https://github.com/pymonalisa/pymonalisa/issues"
[tool.poetry.dependencies]
python = ">=3.9,<4.0"
click = "^8.1.7"
cloup = "^3.0.7"
loggpy = "^0.1.0"
wasmtime = "^36.0.0"
[tool.poetry.scripts]
pymonalisa = "pymonalisa.main:main"

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pymonalisa/setup.py Normal file
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
from setuptools import setup, find_packages
with open("README.md", "r", encoding="utf-8") as fh:
long_description = fh.read()
setup(
name="pymonalisa",
version="0.1.2",
description="pymonalisa - A Python library to decrypt IQIYI DRM License Ticket",
long_description=long_description,
long_description_content_type="text/markdown",
author="ReiDoBrega",
author_email="",
url="https://github.com/ReiDoBrega/pymonalisa",
license="CC BY-NC-ND 4.0",
packages=find_packages(),
python_requires=">=3.9,<4.0",
install_requires=[
"click>=8.1.7",
"cloup>=3.0.7",
"loggpy>=0.1.0",
"wasmtime>=36.0.0",
],
entry_points={
"console_scripts": [
"pymonalisa=pymonalisa.main:main",
],
},
keywords=[
"python",
"drm",
"monalisa",
"iqcom",
"iqiyi",
"wasm",
],
classifiers=[
"Development Status :: 5 - Production/Stable",
"Intended Audience :: Developers",
"Intended Audience :: End Users/Desktop",
"Natural Language :: English",
"Operating System :: OS Independent",
"Topic :: Multimedia :: Video",
"Topic :: Security :: Cryptography",
"Topic :: Software Development :: Libraries :: Python Modules",
"Programming Language :: Python :: 3",
"Programming Language :: Python :: 3.9",
"Programming Language :: Python :: 3.10",
"Programming Language :: Python :: 3.11",
"Programming Language :: Python :: 3.12",
],
include_package_data=True,
)