vbuell / python-javaobj Goto Github PK

Bugfix (python 2.7):
  File "javaobj.py", line 36, in load
    return marshaller.readObject()
  File "javaobj.py", line 194, in readObject
    self._oops_dump_state()
  File "javaobj.py", line 485, in _oops_dump_state
    self.object_stream.seek(-16, mode=1)
 TypeError: seek() takes no keyword arguments

What is the expected output? What do you see instead?

The output that I expect is deserialize java object that is serialized by Java 
ObjectOutputStream and read from the socket by socket python method. recv

I see this error:
No handlers could be found for logger "javaobj"
Traceback (most recent call last):
  File "/home/aledani85/workspace/tesiinf2/src/cspackage/ClientSock.py", line 28, in <module>
    stringa=javaobj.loads(pippo)
  File "/home/aledani85/Scaricati/javaobj-0.1.0-py2.6.egg/javaobj.py", line 45, in loads
  File "/home/aledani85/Scaricati/javaobj-0.1.0-py2.6.egg/javaobj.py", line 159, in readObject
  File "/home/aledani85/Scaricati/javaobj-0.1.0-py2.6.egg/javaobj.py", line 181, in _read_and_exec_opcode
  File "/home/aledani85/Scaricati/javaobj-0.1.0-py2.6.egg/javaobj.py", line 190, in _readStruct
struct.error: unpack requires a string argument of length 1


What version of the product are you using? On what operating system?
The version used is:0.1.0.The operating system is Ubuntu karmic 8.04

Please provide any additional information below.

is possible using this form deserialize Java objects into python objects? I 
will have to pass along a serialized Java objects form python.This form must 
then serialize the object before bed to send a second Java class which will 
read the object.

Thanks for the help. Congratulations on this very interesting form.

Only instance of 0x7a in my input (sorry I can't supply full sample):

0000030: 6465 828f ef98 c366 2308 0c00 0078 707a

Any advice on how to implement un-implemented opcodes?

Full trace:
  File "javaobj.py", line 36, in load
    return marshaller.readObject()
  File "javaobj.py", line 181, in readObject
    opcode, res = self._read_and_exec_opcode(ident=0)    # TODO: add expects
  File "javaobj.py", line 213, in _read_and_exec_opcode
    return (opid, handler(ident=ident))
  File "javaobj.py", line 365, in do_object
    opcode, obj = self._read_and_exec_opcode(ident=ident+1) # , expect=[self.TC_ENDBLOCKDATA, self.TC_BLOCKDATA, self.TC_OBJECT, self.TC_NULL, self.TC_REFERENCE])
  File "javaobj.py", line 212, in _read_and_exec_opcode
    raise RuntimeError("Unknown OpCode in the stream: 0x%x" % opid)
RuntimeError: Unknown OpCode in the stream: 0x7a

import javaobj

with open("/Users/0x101/safe/mytools_10012106/pwnjvm/test/8848.bin", "rb") as fd:
	jobj = fd.read()
	pobj = javaobj.loads(jobj)
	print(pobj)


 python test.py
Traceback (most recent call last):
  File "test.py", line 5, in <module>
    pobj = javaobj.loads(jobj)
  File "/usr/local/lib/python2.7/site-packages/javaobj.py", line 44, in loads
    marshaller = JavaObjectUnmarshaller(f)
  File "/usr/local/lib/python2.7/site-packages/javaobj.py", line 155, in __init__
    self._readStreamHeader()
  File "/usr/local/lib/python2.7/site-packages/javaobj.py", line 178, in _readStreamHeader
    raise IOError("The stream is not java serialized object. Invalid stream header: %04X%04X" % (magic, version))
IOError: The stream is not java serialized object. Invalid stream header: ACED0573

I Have a 10 Years old Java Client/Server application which communicate via 
serialized JavaObj. My first problem is that my network dumps have no 
STREAM_MAGIC + STREAM_VERSION. Further it includes TC_RESET bytes which seems 
to be not supported by your module. 

Would it be possible to add it or just tell me how to do it simply?

Here is my example dump:

y  s  r        j  a  v   a  .  l  a  n  g  .  I   n  t  e  g  e  r     �   
�  �  �  �  �  8       
   I        v  a  l  u   e  x  r        j  a  v   a  .  l  a  n  g  .  N   u  m  b  e  r  �  �  � 
      �  �  �            x  p              y  t         s  u  c  c  e  s   s  y 

79:73:72:00:11:6a:61:76  61:2e:6c:61:6e:67:2e:49  6e:74:65:67:65:72:12:e2  
a0:a4:f7:81:87:38:02:00
01:49:00:05:76:61:6c:75  65:78:72:00:10:6a:61:76  61:2e:6c:61:6e:67:2e:4e  
75:6d:62:65:72:86:ac:95
1d:0b:94:e0:8b:02:00:00  78:70:00:00:00:01:79:74  00:07:73:75:63:63:65:73  73:79

Thanks
Frank

b'\xac\xed\x00\x05sr\x00\x13java.util.ArrayListx\x81\xd2\x1d\x99\xc7a\x9d\x03\x00\x01I\x00\x04sizexp\x00\x00\x00\x02w\x04\x00\x00\x00\x02sr\x00\x11java.lang.Integer\x12\xe2\xa0\xa4\xf7\x81\x878\x02\x00\x01I\x00\x05valuexr\x00\x10java.lang.Number\x86\xac\x95\x1d\x0b\x94\xe0\x8b\x02\x00\x00xp\x00\x00\x00\x01sq\x00~\x00\x02\x00\x00\x00\x02x'

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "javaobj.py", line 190, in loads
    ignore_remaining_data=ignore_remaining_data)
  File "javaobj.py", line 171, in load
    return marshaller.readObject(ignore_remaining_data=ignore_remaining_data)
  File "javaobj.py", line 501, in readObject
    _, res = self._read_and_exec_opcode(ident=0)
  File "javaobj.py", line 568, in _read_and_exec_opcode
    return opid, handler(ident=ident)
  File "javaobj.py", line 833, in do_object
    opcode, obj = self._read_and_exec_opcode(ident=ident + 1)
  File "javaobj.py", line 564, in _read_and_exec_opcode
    .format(opid, position))
RuntimeError: Unknown OpCode in the stream: 0x0 (at offset 0x8C)