import struct
import base64
platform_letter = b'g'
encrypted_content=b'...'
device_id=b'...'
payload = struct.pack("<i", len(encrypted_content)) + pl + encrypted_content + device_id
incoming_payload = base64.b64encode(payload)
# unpacking in Python
payload = base64.b64decode(incoming_payload)
len_enc_content = struct.unpack("<i", payload[:4])[0]
platform_letter = chr(payload[4])
encrypted_content = payload[5 : 5 + len_enc_content]
device_id = payload[5 + len_enc_content :]
# getting header from published messages
encrypted_payload = base64.b64decode(encrypted_content)
len_header = struct.unpack("<i", encrypted_payload[0:4])[0]
header = encrypted_payload[4: 4 + len_header]
content_ciphertext = encrypted_payload[4 + len_header:]""" Email (Gmail etc)
"""
# to:cc:bcc:subject:body
""" Messages (Telegram etc)
"""
# to:body
""" Text (X; Twitter etc)
"""
# body