Yowsup: Can't receive Encrypt image

[Dimelay]

File "/home/steck/whatsappMy/yowsup/yowsup/layers/protocol_media/layer.py", line 41, in recvMessageStanza
if mediaNode.getAttributeValue("type") == "image":
AttributeError: 'NoneType' object has no attribute 'getAttributeValue'

DATA

Decrypt body:
yowsup/layers/axolotl/layer.py:

def handleWhisperMessage(self, node):
encMessageProtocolEntity = EncryptedMessageProtocolEntity.fromProtocolTreeNode(node)

    whisperMessage = WhisperMessage(serialized=encMessageProtocolEntity.getEncData())
    sessionCipher = self.getSessionCipher(encMessageProtocolEntity.getFrom(False))
    plaintext = sessionCipher.decryptMsg(whisperMessage)
    if encMessageProtocolEntity.getVersion() == 2:
        plaintext = self.unpadV2Plaintext(plaintext)
    //PRINT DECRYPT BODY
    print plaintext
    //
    bodyNode = ProtocolTreeNode("body", data = plaintext)
    node.addChild(bodyNode)
    self.toUpper(node)

Link to my file
https://mmi488.whatsapp.net/d/0QVa5QLVNRiH0HZ_gU-W5FbzX-4/AhbVJi2WS1Yia7EklnoFua1fwMezYiqzH4BQsv53_63Z.enc ┴�K\←c��� *�/R���Zc�T㡪Z│ܒM���O·�┘┌��±b�c�H�─�π─U��┌\└ǎ�K91b��←?:◆�;±�⎺��cM&RF���_�M��1���┤4?���d��K'E��̏� �·B���c�U≥─��π�]Ѝ⎽��┘�ι:��Z#�1����TA↓cQ��S�ĩ°�S/c��B←▒�
��n/��HǢK$$����cVf����РG��rK1$�ߧ�׿���@WA�����L�bk�A�.�B�_x1ҽ���
%&'()_456789:CDEFGHIJSTUV

How to decrypt the file now?

[yniv]

no clue. have you looked at the wa16 branch I think @tgalal has already started working on this. maybe its working there.
also, @mgp25 's the chat-api already implemented this. you can check there.
please post here any progress you have cause currently yowsup is useless

[yniv]

@Dimelay can you please post the code to simple ignore image messages for now, so it won't break the code? (until someone will solve the problem)

[Dimelay]

@yniv
Edit file
yowsup/layers/protocol_media/layer.py

Find and modify function
def recvMessageStanza(self, node):
pass

There is little time for this. Simple ignore

Sorry/ google translate =)

[yniv]

@Dimelay but maybe we need to send ack anyway?

[Dimelay]

@yniv Done!
Receive notification about the image and sent 'ack' package
It does not fall. How can you put the files? =)

[Dimelay]

yowsup/layers/protocol_media/layer.py

def recvMessageStanza(self, node):
if node.getAttributeValue("type") == "media":
mediaNode = node.getChild("enc")
if mediaNode.getAttributeValue("mediatype") == "image":
entity = ImageDownloadableMediaMessageProtocolEntity.fromProtocolTreeNode(node)
self.toUpper(entity)
print 'protocol_media/layer.py recv image from %s' % node.getAttributeValue("from")
elif mediaNode.getAttributeValue("type") == "audio":
entity = AudioDownloadableMediaMessageProtocolEntity.fromProtocolTreeNode(node)
self.toUpper(entity)
elif mediaNode.getAttributeValue("type") == "video":
entity = VideoDownloadableMediaMessageProtocolEntity.fromProtocolTreeNode(node)
self.toUpper(entity)
elif mediaNode.getAttributeValue("type") == "location":
entity = LocationMediaMessageProtocolEntity.fromProtocolTreeNode(node)
self.toUpper(entity)
elif mediaNode.getAttributeValue("type") == "vcard":
entity = VCardMediaMessageProtocolEntity.fromProtocolTreeNode(node)
self.toUpper(entity)

yowsup/layers/protocol_media/protocolentities/message_media_downloadable.py

@staticmethod
def fromProtocolTreeNode(node):
entity = MediaMessageProtocolEntity.fromProtocolTreeNode(node)
entity.class = DownloadableMediaMessageProtocolEntity
"""
mediaNode = node.getChild("media")
entity.setDownloadableMediaProps(
mediaNode.getAttributeValue("mimetype"),
mediaNode.getAttributeValue("filehash"),
mediaNode.getAttributeValue("url"),
mediaNode.getAttributeValue("ip"),
mediaNode.getAttributeValue("size"),
mediaNode.getAttributeValue("file")
)
"""
return entity

yowsup/layers/protocol_media/protocolentities/message_media_downloadable_image.py

@staticmethod
def fromProtocolTreeNode(node):
entity = DownloadableMediaMessageProtocolEntity.fromProtocolTreeNode(node)
entity.class = ImageDownloadableMediaMessageProtocolEntity
"""
mediaNode = node.getChild("media")
entity.setImageProps(
mediaNode.getAttributeValue("encoding"),
mediaNode.getAttributeValue("width"),
mediaNode.getAttributeValue("height"),
mediaNode.getAttributeValue("caption"),
)
"""
return entity

yowsup/layers/protocol_media/protocolentities/message_media.py

@staticmethod
def fromProtocolTreeNode(node):
entity = MessageProtocolEntity.fromProtocolTreeNode(node)
entity.class = MediaMessageProtocolEntity
"""
entity.setMediaType(node.getChild("media").getAttributeValue("type"))
preview = node.getChild("media").getData()
entity.setPreview(preview)
"""
return entity

[bdbais]

I have this problem, is it the same?

...
File "/usr/local/lib/python2.7/dist-packages/yowsup/layers/init.py", line 59, in toUpper
self.upper.receive(data)
File "/usr/local/lib/python2.7/dist-packages/yowsup/layers/__init.py", line 169, in receive
s.receive(data)
File "/usr/local/lib/python2.7/dist-packages/yowsup/layers/init.py", line 105, in receive
recv(node)
File "/usr/local/lib/python2.7/dist-packages/yowsup/layers/protocol_media/layer.py", line 40, in recvMessageStanza
if mediaNode.getAttributeValue("type") == "image":
AttributeError: 'NoneType' object has no attribute 'getAttributeValue'

[yniv]

yes

[pag16]

https://github.com/tgalal/yowsup/issues/1389 you can try solution which i propose here to ignore these scenarios in meanwhile

[jodersus]

@Dimelay could you pls post your code with indentation?
use three of this character: ` (<- copy paste ;)
before and after the code.

Thanks!
A

[bdbais]

    def recvMessageStanza(self, node):
        if node.getAttributeValue("type") == "media":
            mediaNode = node.getChild("enc")
            if mediaNode.getAttributeValue("mediatype") == "image":
                entity = ImageDownloadableMediaMessageProtocolEntity.fromProtocolTreeNode(node)
                self.toUpper(entity)
                print 'protocol_media/layer.py recv image from %s' % node.getAttributeValue("from")
            elif mediaNode.getAttributeValue("type") == "audio":
                entity = AudioDownloadableMediaMessageProtocolEntity.fromProtocolTreeNode(node)
                self.toUpper(entity)
            elif mediaNode.getAttributeValue("type") == "video":
                entity = VideoDownloadableMediaMessageProtocolEntity.fromProtocolTreeNode(node)
                self.toUpper(entity)
            elif mediaNode.getAttributeValue("type") == "location":
                entity = LocationMediaMessageProtocolEntity.fromProtocolTreeNode(node)
                self.toUpper(entity)
            elif mediaNode.getAttributeValue("type") == "vcard":
                entity = VCardMediaMessageProtocolEntity.fromProtocolTreeNode(node)
            self.toUpper(entity)

I'm trying to do it

[bdbais]

    @staticmethod
    def fromProtocolTreeNode(node):
        entity = MediaMessageProtocolEntity.fromProtocolTreeNode(node)
        entity.__class__ = DownloadableMediaMessageProtocolEntity
        """
            mediaNode = node.getChild("media")
            entity.setDownloadableMediaProps(
            mediaNode.getAttributeValue("mimetype"),
            mediaNode.getAttributeValue("filehash"),
            mediaNode.getAttributeValue("url"),
            mediaNode.getAttributeValue("ip"),
            mediaNode.getAttributeValue("size"),
            mediaNode.getAttributeValue("file")
            )
        """
        return entity

[bdbais]

    @staticmethod
    def fromProtocolTreeNode(node):
        entity = DownloadableMediaMessageProtocolEntity.fromProtocolTreeNode(node)
        entity.__class__ = ImageDownloadableMediaMessageProtocolEntity
        """
            mediaNode = node.getChild("media")
            entity.setImageProps(
            mediaNode.getAttributeValue("encoding"),
            mediaNode.getAttributeValue("width"),
            mediaNode.getAttributeValue("height"),
            mediaNode.getAttributeValue("caption"),
            )
        """
    return entity

okay fixed

[bdbais]

    @staticmethod
    def fromProtocolTreeNode(node):
        entity = MessageProtocolEntity.fromProtocolTreeNode(node)
        entity.__class__ = MediaMessageProtocolEntity
        """
        entity.setMediaType(node.getChild("media").getAttributeValue("type"))
        preview = node.getChild("media").getData()
        entity.setPreview(preview)
        """
        return entity

[bdbais]

not resolve for me:

  File "/usr/local/lib/python2.7/dist-packages/yowsup/layers/protocol_media/protocolentities/message_media_downloadable.py", line 30, in __str__
    out  = super(DownloadableMediaMessageProtocolEntity, self).__str__()
  File "/usr/local/lib/python2.7/dist-packages/yowsup/layers/protocol_media/protocolentities/message_media.py", line 108, in __str__
    out += "Media Type: %s\n" % self.mediaType
AttributeError: 'DownloadableMediaMessageProtocolEntity' object has no attribute 'mediaType'

[payamazadi]

@bdbais @jlguardi
the above is a step in the right direction - following changes:

1. in protocol_media/layer.py recvStanzaMessage

if node.getAttributeValue("type") == "media":
            mediaNode = node.getChild("enc") #change media to enc

1. in protocol_media/protocolentities/message_media.py fromProtocolTreeNode

entity.setMediaType(node.getAttributeValue("mediatype")) #instead of .getChild etc)
preview = node.getData() # instead of .getChild etc)

This makes things conform to the new encrypted XML body, which @Dimelay alluded to, which is something like:

<enc type="msg" mediatype="image" v="2">
3
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HEX:330a210598c6958075a8cablahblahblah more of this
</enc>

The question is, now we have the encrypted data in value node, we just need to decrypt it. What should be the process to do this? What is the key, where do we get it from, and how do we use it to decrypt the message body? It looks like the image data itself is encoded into the message, which means when we decrypt it we'll have the binary that makes up the image (including exif data etc). So no need to go and download an image from a URL, which makes mediadownloader.py unnecessary..

[payamazadi]

This is the full printout from below, with some relevant areas bolded
```if node.getAttributeValue("type") == "media":
print(node)

<message type="media" notify="P" from="[email protected]" id="48BC4C944B1D9033B6" t="1458851865">
<enc type="msg" mediatype="image" v="2">
3
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HEX: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
</enc>
<body>

j**https://mmi263.whatsapp.net/d/X5lGvQhVridh8JNjJ1cRTlb0UBk/AomynskcHiGNoLNiIC9qfyPYsnDBZGK_CxMYe1aDbZVG.enc**
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</body>
</message>

[payamazadi]

trying to figure out how to just make this work in the axolotl layer. so far i've changed handleEncMessage to something like this:

def handleEncMessage(self, node):
        try:
            if node.getChild("enc")["v"] == "2" and node["from"] not in self.v2Jids:
                self.v2Jids.append(node["from"])

            if node.getChild("enc")["type"] == "pkmsg":
                self.handlePreKeyWhisperMessage(node)
            elif node.getChild("enc")["type"] == "msg" and node.getChild("enc")["mediatype"] == "image":
                self.handleWhisperMessage(node) #what should this be!?

[Dimelay]

@bdbais
not resolve for me:

You use yowsup-cli.py or written by you script ?
For yowsup-cli.py edit
/yowsup/demos/cli/layer.py
@ProtocolEntityCallback("message")
Line 513

elif message.getType() == "media":
    pass    
    #messageOut = self.getMediaMessageBody(message)

Now, if I get the picture, my script does not crash and gives the message

[Online ](-->)
protocol_media/layer.py recv image from  [email protected]
[Online ](-->)

[payamazadi]

i'm not trying to just ignore the case when a message is received, i'm actually trying to fix the problem. my use case for this requires the ability to receive images. that's why this issue is a bug..

[bdbais]

    @staticmethod
    def fromProtocolTreeNode(node):
        entity = MessageProtocolEntity.fromProtocolTreeNode(node)
        entity.__class__ = MediaMessageProtocolEntity
        """
        entity.setMediaType(node.getAttributeValue("mediatype"))
        preview = node.getData()
        entity.setPreview(preview)
        """
        return entity

[bdbais]

I'm using a script based on echoclient for receiving media from users, but now I can't use it.
Error is already present.

[payamazadi]

yes, you are right, that is what we are trying to fix. don't know how to properly decrypt the media message

[Dimelay]

OK, I got to see a preview of the image.
After the function
def handleWhisperMessage (self, node)
We get the binary data. They can parse. We are looking for the title FF D8 (JPEG Header and get a preview of the image! In the same binary data link to the full image, you just get it and decipher!

[payamazadi]

@Dimelay that sounds like it'd work - can you post the code here?

[payamazadi]

ok, i see what yuo're saying. i'm doing something like this:

def handleWhisperMessage(self, node):
        encMessageProtocolEntity = EncryptedMessageProtocolEntity.fromProtocolTreeNode(node)

        whisperMessage = WhisperMessage(serialized=encMessageProtocolEntity.getEncData())
        sessionCipher = self.getSessionCipher(encMessageProtocolEntity.getFrom(False))
        plaintext = sessionCipher.decryptMsg(whisperMessage)

        newFile = open ("kaka.txt", "wb")
        newByteArray = bytearray(plaintext)
        encLocation = str(newByteArray[5:111])

        #download file from encLocation
        #get its binary value, decrypt it, print it
        #
        downloader = MediaDownloader(self.handleEncLocation)
        downloader.download(encLocation)

        #if encMessageProtocolEntity.getVersion() == 2:
        #    plaintext = self.unpadV2Plaintext(plaintext)

        bodyNode = ProtocolTreeNode("body", data = plaintext)

        node.addChild(bodyNode)
        self.toUpper(node)

    def handleEncLocation(self, path):
        outPath = "/tmp/yowfiles/%s.txt" % os.path.basename(path)
        shutil.copyfile(path, outPath)

        theFile = open(outPath, 'rb')
        theBytes = theFile.read()
        #now decrypt theBytes. having trouble getting the recipient ID here

[jlguardi]

@payamazadi @Dimelay I've gotten preview of the image and I've partially ported chatAPI in my branch (https://github.com/jlguardi/yowsup/tree/encrypted_media)

As you can see, it produces still an exception but preview node is correct. I have printed to a file and works.

Now, I'm trying to use protobuf to read all other fields (url is possible without protobuf but we need all other fields to decrypt remote file).

[payamazadi]

@jlguardi are you saying without protobuf the contents of the .enc file that gets downloaded can't be fully decrypted? do you have any idea what the file structure is?..

[jlguardi]

@payamazadi Step by step... I've fully read encrypted message content: url, caption... So I'll decrypt file but I need time/help for that.
Use my branch!

[payamazadi]

@jlguardi let me know what i can do to help. if you can point me to where in chat-api i need to look to port, i can help w that

[Dimelay]

```case 'media':

``````
switch ($node->getChild('enc')->getAttribute('mediatype')) {
case 'image':
$image = new ImageMessage();
$image->parseFromString($plaintext);
$keys = (new HKDFv3())->deriveSecrets($image->getRefKey(), hex2bin('576861747341707020496d616765204b657973'), 112);
$iv = substr($keys, 0, 16);
$keys = substr($keys, 16);
$parts = str_split($keys, 32);
$key = $parts[0];
$macKey = $parts[1];
$refKey = $parts[2];

          //should be changed to nice curl, no extra headers :D
          $file_enc = file_get_contents($image->getUrl());
          //requires mac check , last 10 chars
          $mac = substr($file_enc, -10);
          $cipherImage = substr($file_enc, 0, strlen($file_enc) - 10);
          $decrypted_image = pkcs5_unpad(mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, $cipherImage, MCRYPT_MODE_CBC, $iv));
          //$save_file = tempnam(sys_get_temp_dir(),"WAIMG_");
          //file_put_contents($save_file,$decrypted_image);
          $child = new ProtocolNode('media',
            [
                'size'     => $image->getLength(),
                'caption'  => $image->getCaption(),
                'url'      => $image->getUrl(),
                'mimetype' => $image->getMimeType(),
                'filehash' => bin2hex($image->getSha256()),
                'width'    => 0,
                'height'   => 0,
                'file'     => $decrypted_image ?: $file_enc,
                'type'     => 'image',
              ], null, $image->getThumbnail());
          $node->addChild($child);```

``````

Chat-API

We need a key:

$keys = (new HKDFv3())->deriveSecrets($image->getRefKey(), hex2bin('576861747341707020496d616765204b657973'), 112);
$keys = substr($keys, 16);
$parts = str_split($keys, 32);
$key = $parts[0]; //KEY!

And decrypt

pkcs5_unpad(mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, $cipherImage, MCRYPT_MODE_CBC, $iv));

pkcs5_unpad == unpadV2plaintex

[jlguardi]

I'm in file chatAPI "handlers/MessageHandler.php +443" I have up to here.

But last half hour I was working with utf-8/latin-1? exception with captions.

[Dimelay]

$image->getRefKey() <-- where ???
I use the hex editor to find it. To decrypt at least a test file. But this is the wrong decision to search using hexeditor

[payamazadi]

const REFKEY = 8;

pb_wa_messages.php

or did you mean where to put it in the port..

[jlguardi]

I've 'almost' implemented gerRefKey. So I need to continue decrypting but now I'm getting an error while reading with protobuff.

I've pushed my last code.

[jlguardi]

@payamazadi This is the position in the buffer

[jlguardi]

4:35 am! time to sleep!
Finally I've some kind of error converting from decrypted but buffered message to an object using protobuf. I get url, mime and caption but seems to fail with sha256. You can try it, it is updated in my fork/encrypted_media.
I hope somebody fixes that before wake up time ;)

[payamazadi]

why is the .proto file for sha256 using string? shouldn't it be bytes?
https://developers.google.com/protocol-buffers/docs/proto#scalar

[payamazadi]

i switched it to bytes, installed protobuff, and compiled, and now the error is past sha256 and onto refkey.

[payamazadi]

changed refkey to use bytes and now it looks like its working.
changed heigh to height and lengt to length, to match with what's being debugged
changed IV to iv in .proto to match with what's being debugged

now i get something like this with your existing debug statements:
URL: https://mmi447.whatsapp.net/d/cVtP9_0aOCLhA_-zJOYru1b0wes/Ap6sE4raJ1oJp1t1Lq8GVhgcZr2HRaTToA7PHaB-_UOU.enc
MIME: image/jpeg
CAPTION:
SHA: �Yǧ�g���M�聹ty�p�H�VU��ߨ�
LENGTH: 123313
HEIGHT: 1600
WIDTH: 900
REFKEY: ��(�������ķ��W��$�[�3LJ��
KEY:
THUMB:
----node--

[Dimelay]

Show you code
REFKEY its good/

[Dimelay]

type=7 and cpp_type=7 ?

[payamazadi]

i'm not sure yet, i'm about to start decrypting

i am using @jlguardi's encrypted-media branch, so make sure you update to that.
from there, the code is almost exactly the same, here's what you need to do to get where i am:

1. change layers/axolotl/encrypted_media.proto to this:

message Media {
    optional string url       =  1;
    optional string mimetype  =  2;
    optional string caption   =  3;
    optional bytes sha256     =  4;
    optional int32 length      =  5;
    optional int32 height      =  6;
    optional int32 width      =  7;
    optional bytes refkey    =  8;
    optional string key       =  9;
    optional string iv        = 10;
    optional string thumbnail = 11;
}

1. if you don't already, download and install Protobuf: https://developers.google.com/protocol-buffers/docs/downloads#release-packages . unzip, ./configure, make && make install. then in a terminal, cd into layers/axolotl and run the following command: protoc --python_out=. encrypted_media.proto

[payamazadi]

if it makes it easier, here's the updated encrypted_media_pb2.py file (but still make sure to update the .proto file as above):

# Generated by the protocol buffer compiler.  DO NOT EDIT!
# source: encrypted_media.proto

import sys
_b=sys.version_info[0]<3 and (lambda x:x) or (lambda x:x.encode('latin1'))
from google.protobuf import descriptor as _descriptor
from google.protobuf import message as _message
from google.protobuf import reflection as _reflection
from google.protobuf import symbol_database as _symbol_database
from google.protobuf import descriptor_pb2
# @@protoc_insertion_point(imports)

_sym_db = _symbol_database.Default()




DESCRIPTOR = _descriptor.FileDescriptor(
  name='encrypted_media.proto',
  package='',
  serialized_pb=_b('\n\x15\x65ncrypted_media.proto\"\xb2\x01\n\x05Media\x12\x0b\n\x03url\x18\x01 \x01(\t\x12\x10\n\x08mimetype\x18\x02 \x01(\t\x12\x0f\n\x07\x63\x61ption\x18\x03 \x01(\t\x12\x0e\n\x06sha256\x18\x04 \x01(\x0c\x12\x0e\n\x06length\x18\x05 \x01(\x05\x12\x0e\n\x06height\x18\x06 \x01(\x05\x12\r\n\x05width\x18\x07 \x01(\x05\x12\x0e\n\x06refkey\x18\x08 \x01(\x0c\x12\x0b\n\x03key\x18\t \x01(\t\x12\n\n\x02iv\x18\n \x01(\t\x12\x11\n\tthumbnail\x18\x0b \x01(\t')
)
_sym_db.RegisterFileDescriptor(DESCRIPTOR)




_MEDIA = _descriptor.Descriptor(
  name='Media',
  full_name='Media',
  filename=None,
  file=DESCRIPTOR,
  containing_type=None,
  fields=[
    _descriptor.FieldDescriptor(
      name='url', full_name='Media.url', index=0,
      number=1, type=9, cpp_type=9, label=1,
      has_default_value=False, default_value=_b("").decode('utf-8'),
      message_type=None, enum_type=None, containing_type=None,
      is_extension=False, extension_scope=None,
      options=None),
    _descriptor.FieldDescriptor(
      name='mimetype', full_name='Media.mimetype', index=1,
      number=2, type=9, cpp_type=9, label=1,
      has_default_value=False, default_value=_b("").decode('utf-8'),
      message_type=None, enum_type=None, containing_type=None,
      is_extension=False, extension_scope=None,
      options=None),
    _descriptor.FieldDescriptor(
      name='caption', full_name='Media.caption', index=2,
      number=3, type=9, cpp_type=9, label=1,
      has_default_value=False, default_value=_b("").decode('utf-8'),
      message_type=None, enum_type=None, containing_type=None,
      is_extension=False, extension_scope=None,
      options=None),
    _descriptor.FieldDescriptor(
      name='sha256', full_name='Media.sha256', index=3,
      number=4, type=12, cpp_type=9, label=1,
      has_default_value=False, default_value=_b(""),
      message_type=None, enum_type=None, containing_type=None,
      is_extension=False, extension_scope=None,
      options=None),
    _descriptor.FieldDescriptor(
      name='length', full_name='Media.length', index=4,
      number=5, type=5, cpp_type=1, label=1,
      has_default_value=False, default_value=0,
      message_type=None, enum_type=None, containing_type=None,
      is_extension=False, extension_scope=None,
      options=None),
    _descriptor.FieldDescriptor(
      name='height', full_name='Media.height', index=5,
      number=6, type=5, cpp_type=1, label=1,
      has_default_value=False, default_value=0,
      message_type=None, enum_type=None, containing_type=None,
      is_extension=False, extension_scope=None,
      options=None),
    _descriptor.FieldDescriptor(
      name='width', full_name='Media.width', index=6,
      number=7, type=5, cpp_type=1, label=1,
      has_default_value=False, default_value=0,
      message_type=None, enum_type=None, containing_type=None,
      is_extension=False, extension_scope=None,
      options=None),
    _descriptor.FieldDescriptor(
      name='refkey', full_name='Media.refkey', index=7,
      number=8, type=12, cpp_type=9, label=1,
      has_default_value=False, default_value=_b(""),
      message_type=None, enum_type=None, containing_type=None,
      is_extension=False, extension_scope=None,
      options=None),
    _descriptor.FieldDescriptor(
      name='key', full_name='Media.key', index=8,
      number=9, type=9, cpp_type=9, label=1,
      has_default_value=False, default_value=_b("").decode('utf-8'),
      message_type=None, enum_type=None, containing_type=None,
      is_extension=False, extension_scope=None,
      options=None),
    _descriptor.FieldDescriptor(
      name='iv', full_name='Media.iv', index=9,
      number=10, type=9, cpp_type=9, label=1,
      has_default_value=False, default_value=_b("").decode('utf-8'),
      message_type=None, enum_type=None, containing_type=None,
      is_extension=False, extension_scope=None,
      options=None),
    _descriptor.FieldDescriptor(
      name='thumbnail', full_name='Media.thumbnail', index=10,
      number=11, type=9, cpp_type=9, label=1,
      has_default_value=False, default_value=_b("").decode('utf-8'),
      message_type=None, enum_type=None, containing_type=None,
      is_extension=False, extension_scope=None,
      options=None),
  ],
  extensions=[
  ],
  nested_types=[],
  enum_types=[
  ],
  options=None,
  is_extendable=False,
  extension_ranges=[],
  oneofs=[
  ],
  serialized_start=26,
  serialized_end=204,
)

DESCRIPTOR.message_types_by_name['Media'] = _MEDIA

Media = _reflection.GeneratedProtocolMessageType('Media', (_message.Message,), dict(
  DESCRIPTOR = _MEDIA,
  __module__ = 'encrypted_media_pb2'
  # @@protoc_insertion_point(class_scope:Media)
  ))
_sym_db.RegisterMessage(Media)


# @@protoc_insertion_point(module_scope)

[payamazadi]

issued pull request on @jlguardi 's encrypted-media branch https://github.com/jlguardi/yowsup/pull/2

[Dimelay]

I did it!

[payamazadi]

you did!? share the code!!!

[Dimelay]

 def handleWhisperMessage(self, node):
        encMessageProtocolEntity = EncryptedMessageProtocolEntity.fromProtocolTreeNode(node)

        whisperMessage = WhisperMessage(serialized=encMessageProtocolEntity.getEncData())
        sessionCipher = self.getSessionCipher(encMessageProtocolEntity.getFrom(False))
        plaintext = sessionCipher.decryptMsg(whisperMessage)

        if encMessageProtocolEntity.getVersion() == 2:
            plaintext = self.unpadV2Plaintext(plaintext)

        media = encrypted_media_pb2.Media()
        media.ParseFromString(plaintext)
        logger.debug("protobuf")
        media = encrypted_media_pb2.Media()
        media.ParseFromString(plaintext)
        print 'read url %s' % media.url
        print("URL: " + media.url)
        print("MIME: " + media.mimetype)
        print("CAPTION: " + media.caption)
        print("SHA: " + media.sha256)
        print("LENGTH: " + str(media.length))
        print("HEIGHT: " + str(media.height))
        print("WIDTH: " + str(media.width))
        print("REFKEY: " + media.refkey)
        print("KEY: " + media.key)
        print("IV: " + media.iv)
        #logger.debug("THUMB: " + media.thumbnail)
        encimg = urllib2.urlopen(media.url).read()
        derivative = HKDFv3().deriveSecrets(media.refkey, binascii.unhexlify('576861747341707020496d616765204b657973'), 112)
        parts = ByteUtil.split(derivative, 16, 32)
        iv = parts[0]
        cipherKey = parts[1]
        e_img = encimg[:-10]
        AES.key_size=128
        cr_obj = AES.new(key=cipherKey,mode=AES.MODE_CBC,IV=iv)
        myimg = cr_obj.decrypt(e_img)
        f=open('/tmp/MY','wb')
        f.write(bytearray(myimg))
        f.close()
        bodyNode = ProtocolTreeNode("body", data = plaintext)
        node.addChild(bodyNode)
        self.toUpper(node)

Image save in /tmp/MY

[Dimelay]

axolotl/layer.py
from Crypto.Cipher import AES
import urllib2
from axolotl.kdf.hkdfv3 import HKDFv3
from axolotl.util.byteutil import ByteUtil

[Dimelay]

Now we have to generate Protocol TreeNode is simply

[Dimelay]

from axolotl.kdf.hkdfv3 import HKDFv3
from axolotl.util.byteutil import ByteUtil
in layer.py

[payamazadi]

sry, didn't see the full thing. got it, it's downloading for me now too!! very nice!!!

[Dimelay]

We did a good job =)

[yniv]

Sound good! can someone arrange a pull request with the full fix for image encryption?? thank you all for the effort

[payamazadi]

@jlguardi on your comments in #1387 you mentioned a more proper integration of this code into the Yowsup layers - can you clarify? also here is a cleaner version of the code with some of the node attributes corrected:

def handleWhisperMessage(self, node):
        encMessageProtocolEntity = EncryptedMessageProtocolEntity.fromProtocolTreeNode(node)

        whisperMessage = WhisperMessage(serialized=encMessageProtocolEntity.getEncData())
        sessionCipher = self.getSessionCipher(encMessageProtocolEntity.getFrom(False))
        plaintext = sessionCipher.decryptMsg(whisperMessage)

        if encMessageProtocolEntity.getVersion() == 2:
            plaintext = self.unpadV2Plaintext(plaintext)

        #get preview
        pos = plaintext.upper().find(binascii.unhexlify('ffd8ffe0'.upper()))
        preview = ""
        if pos > 0:
            preview = plaintext[pos:]
        else:
            preview = "lol"

        #decode schema from encrypted message
        media = encrypted_media_pb2.Media()
        media.ParseFromString(plaintext)
        self.decryptAndSaveImage(media)

        bodyNode = ProtocolTreeNode("media", data = preview)
        bodyNode.setAttribute("type", "image")
        bodyNode.setAttribute("file", "/tmp/my.jpg")
        bodyNode.setAttribute("size", media.length)
        bodyNode.setAttribute("width", media.width)
        bodyNode.setAttribute("height", media.height)
        bodyNode.setAttribute("encoding", "unknown")
        bodyNode.setAttribute("caption", media.caption)
        bodyNode.setAttribute("mimetype", media.mimetype)
        bodyNode.setAttribute("filehash", media.sha256)
        bodyNode.setAttribute("url", media.url)
        bodyNode.setAttribute("ip", "idk")
        node.setAttribute("preview", preview)

        node.addChild(bodyNode)

        self.toUpper(node)

    def decryptAndSaveImage(self, media):
        encimg = urllib2.urlopen(media.url).read()
        derivative = HKDFv3().deriveSecrets(media.refkey, binascii.unhexlify('576861747341707020496d616765204b657973'), 112)
        parts = ByteUtil.split(derivative, 16, 32)
        iv = parts[0]
        cipherKey = parts[1]
        e_img = encimg[:-10]
        AES.key_size=128
        cr_obj = AES.new(key=cipherKey,mode=AES.MODE_CBC,IV=iv)
        myimg = cr_obj.decrypt(e_img)
        f=open('/tmp/my.jpg','wb')
        f.write(bytearray(myimg))
        f.close()

turning in for the night!

[jlguardi]

@payamazadi I'm integrating in the layers. Thx for the work of last hours!

[bdbais]

somebody could to merge all patch in 1 thread :) I'm lost :)

[jlguardi]

@bdbais jlguardi/master for all but encrypted_media and we have a branch for tha propose (https://github.com/jlguardi/yowsup/tree/encrypted_media)

[bdbais]

cloned, builded, installed, very good, it works! :) thanks @jlguardi and @payamazadi !

[thundergreen]

@bdbais how it works? i can apparently send messages but wont get ack. in my client and can'T receive messages

[yniv]

@jlguardi the encrypted_media branch is already working? supporting encrypted media completely?

[jlguardi]

@yniv not yet! It's just a proof of concept. I need to adapt to layers but WIP.

[thundergreen]

I checked and pulled last master but it won't work :(

Am 25.03.2016 um 12:30 schrieb jlguardi:

@yniv https://github.com/yniv not yet! It's just a proof of concept.
I need to adapt to layers but WIP.

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[Dimelay]

Who adapts the code in layers? I'm doing this, slowly

[Dimelay]

I adapted the code in layers. While I test. But it works! )

[jlguardi]

I GOT IT!!!!

Well, I've adapted images at least. Other media would be soon.
It's not too clean code but I'll refactor slowly.

Check my branch jlguardi/encrypted_media

I have included a new method in all downloadable medias: getMediaContent which gets the file and decrypts it if necessary.

Just tested with images. Video crashes all other media, not tested!

[jlguardi]

Fixed Video!!!

[Dimelay]

@jodersus
I've done a little differently but this also works well)

[Dimelay]

Thanks to all! branch can be closed) Patches are ready

[jlguardi]

Missing location and audio. I'll port them tonight. But I'll merge to master now.

[thundergreen]

Messages still not receiving .. are u also working on this?

Am 25.03.2016 um 16:49 schrieb jlguardi:

I GOT IT!!!!

Well, I've adapted images at least. Other media would be soon.
It's not too clean code but I'll refactor slowly.

Check my branch jlguardi/encrypted_media

I have included a new method in all downloadable medias:
getMediaContent which gets the file and decrypts it if necessary.

Just tested with images. Video crashes all other media, not tested!

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[jlguardi]

@thundergreen Messages? Please, refer issue (if any) with logs.

[thundergreen]

I'm using transwhat with yowsup. I can send messages, get also ackn.
messages but no hooks back in conversations. People can read my messages
but can't reply to me. messages wont be received.

My debug of transwhat doesn't show that much.

Am 25.03.2016 um 18:20 schrieb jlguardi:

@thundergreen https://github.com/thundergreen Messages? Please,
refer issue (if any) with logs.

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[jlguardi]

Open a new issue and post logs of yowsup-cli with your credentials in debug mode.

[thundergreen]

never used cli..... will try it. how to enable the debug mode?

Am 25.03.2016 um 18:36 schrieb jlguardi:

Open a new issue and post logs of yowsup-cli with your credentials in
debug mode.

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[jlguardi]

yowsup-cli demos -y -d -l phonewithcc:password

[thundergreen]

Am 25.03.2016 um 18:52 schrieb jlguardi:

Auth: Logged in!
DEBUG:yowsup.layers.logger.layer:rx:
from="33674514813-1446536444àg.us" offline="3" type="text"
id="33E891E4922A3C9F9A" notify="Gilles Hurtaud">

»‚Ëè

ChåsüdI†ö±vJßÅýÛ9¡ùÞc±Ñ½áCJqç'ö)L<àé«hYqg ñª¨ïÍv†—Ó§’Œš´IðºØØwVÕð”ÞÑýV
äÆe‘gáÀÌÑcӂ†V¼­qdm¿;Q
ʳFVé"·êÆZ×jzÓZ懑ãYl-Çb¸&þéR;®=³Ü¾›sè4h*us
ñÿ6mìFmTU³VÛö±¯¥éQj;d¿þL
6(ôa–­5¢ÛÒêç+pü;ÔUä
§û”
HEX: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

Traceback (most recent call last):
File "/usr/local/bin/yowsup-cli", line 4, in
èèimportèè('pkgèresources').runèscript('yowsup2==2.4.48',
'yowsup-cli')
File
"/usr/local/lib/python2.7/dist-packages/pkgèresources/èèinitèè.py",
line 726, in runèscript
self.require(requires)é0ê.runèscript(scriptèname, ns)
File
"/usr/local/lib/python2.7/dist-packages/pkgèresources/èèinitèè.py",
line 1484, in runèscript
exec(code, namespace, namespace)
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/EGG-INFO/scripts/yowsup-cli",
line 323, in
if not parser.process():
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/EGG-INFO/scripts/yowsup-cli",
line 227, in process
self.startCmdline()
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/EGG-INFO/scripts/yowsup-cli",
line 255, in startCmdline
stack.start()
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/yowsup/demos/cli/stack.py",
line 25, in start
self.stack.loop(timeout = 0.5, discrete = 0.5)
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/yowsup/stacks/yowstack.py",
line 187, in loop
asyncore.loop(_args, *_kwargs)
File "/usr/lib/python2.7/asyncore.py", line 216, in loop
pollèfun(timeout, map)
File "/usr/lib/python2.7/asyncore.py", line 156, in poll
read(obj)
File "/usr/lib/python2.7/asyncore.py", line 87, in read
obj.handleèerror()
File "/usr/lib/python2.7/asyncore.py", line 83, in read
obj.handleèreadèevent()
File "/usr/lib/python2.7/asyncore.py", line 449, in handleèreadèevent
self.handleèread()
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/yowsup/layers/network/layer.py",
line 86, in handleèread
self.receive(data)
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/yowsup/layers/network/layer.py",
line 94, in receive
self.toUpper(data)
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/yowsup/layers/èèinitèè.py",
line 59, in toUpper
self.èèupper.receive(data)
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/yowsup/layers/stanzaregulator/layer.py",
line 28, in receive
self.processReceived()
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/yowsup/layers/stanzaregulator/layer.py",
line 48, in processReceived
self.toUpper(oneMessageData)
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/yowsup/layers/èèinitèè.py",
line 59, in toUpper
self.èèupper.receive(data)
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/yowsup/layers/auth/layerècrypt.py",
line 63, in receive
self.toUpper(payload)
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/yowsup/layers/èèinitèè.py",
line 59, in toUpper
self.èèupper.receive(data)
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/yowsup/layers/coder/layer.py",
line 35, in receive
self.toUpper(node)
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/yowsup/layers/èèinitèè.py",
line 59, in toUpper
self.èèupper.receive(data)
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/yowsup/layers/logger/layer.py",
line 14, in receive
self.toUpper(data)
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/yowsup/layers/èèinitèè.py",
line 59, in toUpper
self.èèupper.receive(data)
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/yowsup/layers/axolotl/layer.py",
line 118, in receive
self.onMessage(protocolTreeNode)
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/yowsup/layers/axolotl/layer.py",
line 140, in onMessage
self.handleEncMessage(protocolTreeNode)
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/yowsup/layers/axolotl/layer.py",
line 225, in handleEncMessage
self.handleWhisperMessage(node)
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/yowsup/layers/axolotl/layer.py",
line 271, in handleWhisperMessage
encMessageProtocolEntity =
EncryptedMessageProtocolEntity.fromProtocolTreeNode(node)
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/yowsup/layers/axolotl/protocolentities/messageèencrypted.py",
line 53, in fromProtocolTreeNode
encNode.data.encode('latin-1') if sys.versionèinfo >= (3,0) else
encNode.data)
File
"/usr/local/lib/python2.7/dist-packages/yowsup2-2.4.48-py2.7.egg/yowsup/layers/axolotl/protocolentities/messageèencrypted.py",
line 24, in setEncProps
assert encType in "pkmsg", "msg"
AssertionError: msg

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[jlguardi]

@thundergreen group encrypted messages aren't supported yet.

[payamazadi]

@jlguardi i've been having an issue w the branch around axolotl's layer, and the handlePreKeyWhisperMessage function.

can you do me a favor and run the echo client and tell me if you get errors?

when the layer sends the media message to handlePreKeyWhisperMessage function, with the code exactly how it is in the encrypted-media branch, and i run the echo client, i get infinite output, looks like this:
ERROR:yowsup.layers.axolotl.layer:Unexpected end-group tag.
ERROR:yowsup.layers.axolotl.layer:Unexpected end-group tag.
ERROR:yowsup.layers.axolotl.layer:Unexpected end-group tag.
ERROR:yowsup.layers.axolotl.layer:Truncated message.
ERROR:yowsup.layers.axolotl.layer:Truncated message.
ERROR:yowsup.layers.axolotl.layer:Truncated message.
ERROR:yowsup.layers.axolotl.layer:Tag had invalid wire type.
ERROR:yowsup.layers.axolotl.layer:Truncated message.
ERROR:yowsup.layers.axolotl.layer:Unexpected end-group tag.

when i essentially replicate the actions of handlePreKeyWhisperMessage into handleWhisperMessage, things seem to work fine.

my workaround is this:

if node.getChild("enc")["v"] == "2" and node["from"] not in self.v2Jids:
                self.v2Jids.append(node["from"])

            if node.getChild("enc")["type"] == "pkmsg":
                self.handlePreKeyWhisperMessage(node)
            elif node.getChild("enc")["type"] == "msg" and node.getChild("enc")["mediatype"] == "image":
                self.handleWhisperMessage(node) #what should this be!?
            else:
                self.handleWhisperMessage(node)

..

def handleWhisperMessage(self, node):
        encMessageProtocolEntity = EncryptedMessageProtocolEntity.fromProtocolTreeNode(node)

        whisperMessage = WhisperMessage(serialized=encMessageProtocolEntity.getEncData())
        sessionCipher = self.getSessionCipher(encMessageProtocolEntity.getFrom(False))
        plaintext = sessionCipher.decryptMsg(whisperMessage)

        if encMessageProtocolEntity.getVersion() == 2:
            plaintext = self.unpadV2Plaintext(plaintext)

        if node.getAttributeValue("type") == 'text':
            bodyNode = ProtocolTreeNode("body", data = plaintext)
        if node.getAttributeValue("type") == 'media':
            # get preview
            pos = plaintext.upper().find(binascii.unhexlify('ffd8ffe0'.upper()))
            preview = plaintext[pos:] if pos > 0 else ""

            #decode schema from encrypted message
            media = encrypted_media_pb2.Media()
            media.ParseFromString(plaintext)

            #logger.debug("compare: " + str(plaintext[pos:] != media.thumbnail))
            bodyNode = ProtocolTreeNode("media", data = preview)
            bodyNode.setAttribute("type", node.getChild("enc").getAttributeValue("mediatype"))
            bodyNode.setAttribute("size", str(media.length))
            bodyNode.setAttribute("width", str(media.width))
            bodyNode.setAttribute("height", str(media.height))
            bodyNode.setAttribute("encoding", "unknown")
            bodyNode.setAttribute("caption", media.caption)
            bodyNode.setAttribute("mimetype", media.mimetype)
            bodyNode.setAttribute("filehash", base64.b64encode(media.sha256))
            bodyNode.setAttribute("url", media.url)
            bodyNode.setAttribute("refkey", base64.b64encode(media.refkey))
            bodyNode.setAttribute("file", "wat")

        node.addChild(bodyNode)
        self.toUpper(node)

by the way, there is also an error being thrown (somewhere, due to a logger.debug line) because the node's file attribute was not being set. i added that line in. you may want to commit that to the branch

[jlguardi]

@payamazadi Ups I read now your comment. Meet me at IRC ([email protected]) if you prefer.
I have just patched file token and reordered due to msg encrypted media wasn't managed.

[payamazadi]

@jlguardi thanks for that. #1406 i'm in the IRC which they posted as being on freenode. what do you use / how do i get on it?

[payamazadi]

btw, great work on this refactor, it works great now out of the box with the echo demo and the code is pretty clean. i can help refactor some of that too

[pag16]

hey guys @payamazadi @jlguardi what is the branch to be used?

[pag16]

hey guys can u please help ? which branch should be used?

[Dimelay]

Tomorrow I'll share my code. I do not use yowsup-cli. I use my cli. I write only for personal use, but I can share code.

[Dimelay]

[Online ](Brain) Чем занимаешься?)
[Online ](Brain) read Brain 
27-03-2016 13:40 <green>Brain</green> <- color ;)
<yellow>С Блонди прописи делаем,еще школа не началась а уже уроки делаем </yellow>
[Online ]Brain)^D
[Online ](-->)

[Online ](Brain) img <- Press TAB
12.png        IMG_0604.JPG  IMG_0646.JPG  scr1.jpg  <-- autocomplete for send img =))
[Online ](Brain)
[Online ]Brain) /list <- phonebook
7XXXXXXXXXX - Name_1
7XXXXXXXXXX -Name_2
7XXXXXXXXXX - Name_3
7XXXXXXXXXX - Name_4
7XXXXXXXXXX -Name_5
7XXXXXXXXXX -Name_6
....etc
[Online ](Brain) Name_4
[Online ](Name_4) 

[27-03-2016_18-28-45] Name_8 send(а) image //the image is stored in the directory specified in the settings

Screenshot )

It is very convenient to use with the phone via ssh

[jlguardi]

New version with media and group messages!!! There are too many issues and I don't know where to report.

My branch https://github.com/jlguardi/yowsup/ works with personal/group text/media. Sending isn't encrypted in groups but works with plain send.

Test it and enjoy it (if it works).

[biji]

@jlguardi which patch fix receiving encrypted image?
thanks

[jodersus]

@jlguardi Great stuff! Many thanks for your great efforts.
Which branch should we use? master or encrypted_media?

[jlguardi]

@jodersus master. See my wiki for some details.

[bartoszhernas]

@jlguardi I am using your master currently. Could you tell me how to decrypt downloaded media files?

[jlguardi]

@bartoszhernas message.getMediaContent() returns unencrypted media but just images work for now, WIP.

[bartoszhernas]

@jlguardi You are a life saver. Thanks a lot. Will check it out

[oip976]

Receiving of decrypted images is no more possible. All receveid images are still encrypted, implemented your method message.getMediaContent(). Are there any open issues?

[brunodeandrade]

Are there any open issues? All receveid images are still encrypted in most recent branch...

[apevzner-dp]

Hello guys,

So is there any piece of news? Is it possible now to open the decrypted images?

[Natureshadow]

So, what needs to be done to get all of this trogether?

[tgalal]

v3.2.0