Hello,
I am facing a very peculiar problem of cencorship.
On a specific country OpenVPN traffic is being blocked trough DPI
techinques.
So I we set an obfsproxy gateway inside and outside the contry. Using
the latest obfsproxy[1] commit 64aeb8d880cf64eb22d80b3f07f97154c08a28ec
using SOCKS5 I am capable of making a successful tunnel but the TLS
handshake fails, this using obfs3 format.
So I tried the scramblesuit[0] protocol but it seems that the software is
somewhat unfinished.
Using the server:
```
bin/obfsproxy --log-file=obfsproxy.log --log-min-severity=debug
scramblesuit \ --password=myopasswrdIdadnoIdeaHadtobeBase32 \
--dest=myio:myport server 0.0.0.0:80
```
```
Traceback (most recent call last):
File "bin/obfsproxy", line 16, in <module>
run()
File "/path/to/obfsproxy/obfsproxy/pyobfsproxy.py", line 205, in run
pyobfsproxy()
File "/path/to/obfsproxy/obfsproxy/pyobfsproxy.py", line 182, in pyobfsproxy
args.validation_function(args)
File "/path/to/obfsproxy/transports/scramblesuit/scramblesuit.py", line 602,
in validate_external_mode_cli
"a good password." % args.uniformDHSecret)
obfsproxy.transports.base.PluggableTransportError:
Given password 'myopasswrdIdadnoIdeaHadtobeBase32' is not valid Base32!
Run 'generate_password.py' to generate a goodpassword.
```
But I failed to find any file named with ``git ls-files | grep
generate_password.py``, but nothing, tried to check if the file was
deleted with ``git log --diff-filter=D --summary | grep generate_password.py``
After a few searches[2] I found that a password could be generated with:
```
$ python -c 'import base64, os; print base64.b32encode(os.urandom(20))'
```
After using a proper passowrd I get this:
```
Traceback (most recent call last):
File "bin/obfsproxy", line 16, in <module>
run()
File "/path/to/obfsproxy/obfsproxy/pyobfsproxy.py", line 205, in run
pyobfsproxy()
File "/path/to/obfsproxy/obfsproxy/pyobfsproxy.py", line 187, in pyobfsproxy
do_external_mode(args)
File "/path/to/obfsproxy/obfsproxy/pyobfsproxy.py", line 101, in
do_external_mode
run_transport_setup(pt_config, args.name)
File "/path/to/obfsproxy/obfsproxy/pyobfsproxy.py", line 150, in
run_transport_setup
transport_class['base'].setup(pt_config)
File "/path/to/obfsproxy/obfsproxy/transports/scramblesuit/scramblesuit.py",
line 148, in setup
"No state location set. If you are using external mode, " \
obfsproxy.transports.base.TransportSetupFailed:
No state location set. If you are using external mode, please set it using
the --data-dir switch.
```
But using the safe switch does the following:
```
obfsproxy: error: unrecognized arguments: --data-dir=/path/to/data/
```
This seems like an uncompleted feature. Any Ideas ?
[0] https://lists.torproject.org/pipermail/tor-relays/2014-February/003886.html
[1] https://gitweb.torproject.org/pluggable-transports/obfsproxy.git/
[2]
https://github.com/NullHypothesis/scramblesuit/blob/master/test/generate_password.py
--
Regards,
Alfredo Palhares
--
tor-talk mailing list - tor-talk@lists.torproject.org
To unsubscribe or change other settings go to
https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-talk
