Thinkst Applied Research
OpenCanary is a daemon that runs several canary versions of services that alerts when a service is (ab)used. It's a low interaction honeypot intended to be run on internal networks.
- Python 2.7+
- [Optional] Samba module needs a working installation of samba
Installation on Ubuntu:
$ sudo apt-get install python-dev python-pip python-virtualenv $ virtualenv env/ $ . env/bin/activate $ pip install patron-it-opencanary[rdp,snmp,remote_logging] # rdp, snmp and remote_logging are optional extras
Ubuntu users installing rdpy should run the following before installing OpenCanary:
$ sudo apt-get install -y build-essential libssl-dev libffi-dev python-dev
Installation OS X needs an extra step, as multiple OpenSSL versions may exist which confounds the python libraries using to it.
$ virtualenv env/ $ . env/bin/activate
Macports users should then run:
$ sudo port install openssl $ env ARCHFLAGS="-arch x86_64" LDFLAGS="-L/opt/local/lib" CFLAGS="-I/opt/local/include" pip install cryptography
Alternatively homebrew users run:
$ brew install openssl $ env ARCHFLAGS="-arch x86_64" LDFLAGS="-L/usr/local/opt/openssl/lib" CFLAGS="-I/usr/local/opt/openssl/include" pip install cryptography
Now installation can run as usual:
$ pip install patron-it-opencanary[rdp,snmp]
To install from source, instead of running pip do the following:
$ git clone https://github.com/thinkst/opencanary $ cd opencanary $ pip install .
If you are looking to get OpenCanary working on OpenBSD, take a look at https://github.com/8com/opencanary.
OpenCanary is started by running:
$ . env/bin/activate $ opencanaryd --start
On the first run, instructions are printed that will get to a working config.
Samba Setup (optional)
The Samba OpenCanary module monitors a log file produced by the Samba full_audit VFS module. Setup relies on:
- Having Samba installed.
- A modified Samba config file, to write file events to syslog's LOCAL7 facility.
- A modified syslog file, to output LOCAL7 to a samba-audit.log file.
As template Samba config, modify the following and install it to the right location (often /etc/samba/smb.conf). The lines you'll likely want to change are:
- server string
- netbios name
[global] workgroup = WORKGROUP server string = blah netbios name = SRV01 dns proxy = no log file = /var/log/samba/log.all log level = 0 syslog only = yes syslog = 0 vfs object = full_audit full_audit:prefix = %U|%I|%i|%m|%S|%L|%R|%a|%T|%D full_audit:success = pread full_audit:failure = none full_audit:facility = local7 full_audit:priority = notice max log size = 100 panic action = /usr/share/samba/panic-action %d #samba 4 server role = standalone server #samba 3 #security = user passdb backend = tdbsam obey pam restrictions = yes unix password sync = no map to guest = bad user usershare allow guests = yes [myshare] comment = All the stuff! path = /home/demo/share guest ok = yes read only = yes browseable = yes #vfs object = audit
Configure syslog to write the Samba logs out to the file that OpenCanary monitors. With rsyslog, adding these two lines to /etc/rsyslog will do that:
$FileCreateMode 0644 local7.* /var/log/samba-audit.log
For other syslog implementations similar lines might work.
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