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diff --git a/content/posts/alpine-hak5-cloudc2/index.org b/content/posts/alpine-hak5-cloudc2/index.org index f59baf2..b0bddd6 100644 --- a/content/posts/alpine-hak5-cloudc2/index.org +++ b/content/posts/alpine-hak5-cloudc2/index.org @@ -9,22 +9,67 @@ I recently purchased some products from [[https://hak5.org][Hak5]], some of which integrate with their self-hosted service for monitoring your equipment called -the [[https://shop.hak5.org/products/c2][Cloud C2]]. The binaries for it are distributed as (mostly) -statically linked go binaries for several platforms all bundled -together in a zip folder. I decided to run it on one of my servers -which runs one of my favourite Linux distributions, Alpine Linux. - -Their website provides a small tutorial for installing C2 on a -systemd-based system, unfortunately it doesn't help me since Alpine -uses the OpenRC init system. +the [[https://shop.hak5.org/products/c2][Cloud C2]]. I decided to run it on one of my servers which runs one +of my favourite Linux distributions, Alpine Linux. You have the option to purchase the community edition for free from their shop, after which you'll receive a product registration code via -email. This email will also contain a link to the aforementioned zip -file containing the binaries. +email. This email will also contain a link to download the Cloud C2 +software, which are distributed as (mostly) statically linked go +binaries for several platforms all bundled together in a zip folder. One of the interesting thing I found was that despite my server being 64-bit x86, =c2_community-linux-64= wouldn't work on Alpine Linux. It's dynamically linked to =/lib64/ld-linux-x86-64.so.2=, which doesn't exist on musl libc machines. The =c2_community-linux-32= -binary is completely statically linked however. +binary is completely statically linked however, so it runs fine. + +Their website provides a small tutorial for installing C2 on a +systemd-based system, unfortunately it doesn't help me since Alpine +uses the OpenRC init system. + +It's possible to run cloudc2 in something like a =tmux= session, which +would work, except it provides no way to reliably restart the service +should it go down, and no way to integrate it with the rest of the +init system. + +To remedy this I wrote an OpenRC script and config file, which I've +put on github [[https://github.com/dantecatalfamo/Hak5-CloudC2-OpenRC][here]]. I've decided to place the cloudc2 binary in +=/opt/cloudc2= because it's not controlled by the package manager, +with the logs at =/var/log/cloudc2.log=, and the database at +=/var/opt/cloudc2.db=. + +The repository contains a [[https://github.com/dantecatalfamo/Hak5-CloudC2-OpenRC/blob/master/README.md][readme]] which goes over how to install the +files and configure your instance. Here's the gist: + +- Download and extract the Cloud C2 zip file +- Create a new folder called =/opt/cloudc2= +- Copy =c2_community-linux-32= into =/opt/cloudc2= +- Copy =<repo>/init.d/cloudc2= into your system's =/etc/init.d/= +- Copy =<repo>/conf.d/cloudc2= into your system's =/etc/conf.d/= +- Edit =/etc/conf.d/cloudc2= and fill out the variables as desired + - NOTE: You must fill out =C2_HOSTNAME= or the service will fail to launch + - If you want to place Cloud C2 behind a reverse proxy, you'll have + to fill out the =C2_OPT= variable with the correct options + + #+BEGIN_SRC shell + C2_OPTS="-reverseProxy -reverseProxyPort XXX" + #+END_SRC + + Where =XXX= is the port that the reverse proxy will be serving on. +- Start the daemon using + #+BEGIN_SRC shell + rc-service cloudc2 start + #+END_SRC +- Enable it at boot + #+BEGIN_SRC shell + rc-update add cloudc2 + #+END_SRC +- Check =/var/log/cloud2c.log= for your installation token (it may + take a minute for it to appear) +- Open the web UI and fill out the installation token from the + previous step, and your registration code from the email +- Done! + +After that Cloud 2C should restart if it crashed, courtesy of +=supervise-daemon=, and launch at boot. |