Just a collection of stuff (mostly from my old blog)
Last week, I launched a new pipeline for Klayers to build Python3.8 Lambda layers in addition to Python3.7. For this, I needed a separate pipeline because not only is it a new runtime, but under the hood this Lambda uses a new Operating System (Amazon Linux 2 vs. Amazon Linux 1) So I took the opportunity to make things right from an account hierarchy perspective. Klayers for Python3.7 lived in...
Android TV boxes, are computers that stream content from the internet onto your TV. The difference between them and your smart-phone is that it has a HDMI connector to your TV, and it usually comes pre-loaded with software to illegally stream content. While the boxes themselves, are general purpose computers running Android (the most popular OS today), the real focus of any regulation should be...
2018 in review I started the year building out govScan.info, a site that audits .gov.my websites for TLS implementation. Overall I curated a list of ~5000 Malaysian government domains through various OSINT and enumeration techniques and now use that list to scan them daily. The project stalled around Jun/July, and it’s basically on auto-pilot till I figure out what to do. The scans still...
Shutting Down!! Sayakenahack was undoubtedly the highlight of my 2017. If you’ve come from sayakenahack.com, I’m sorry but I’ve shutdown the site :(. I learnt so much from it, and it was even my ticket for presenting at Hack In the Box Singapore … But all good things must come to an end, there’s no point having a site that does nothing but consume my hosting charges...
Over the past few weeks, I’ve been toying with lambda functions and thinking about using them for more than just APIs. I think people miss the most interesting aspect of serverless functions — namely that they’re massively parallel capability, which can do a lot more than just run APIs or respond to events. There’s 2-ways AWS let’s you run lambdas, either via...
GitHub Webhooks with Serverless
Just because you have webhook, doesn’t mean you need a webserver.
With serverless AWS Lambdas you’ve got a free (as in beer) and always on ability to receive webhooks callbacks without the need for pesky servers. In this post, I’ll setup a serverless solution to accept incoming POST from a GitHub webhook.
DNS Queries on GovScan.Info This post is a very quick brain-dump of stuff I did over the weekend, in the hopes that I don’t forget it :). Will post more in-depth material if time permits over the weekend. govScan.info, a site I created as a side hobby project to track TLS implementation across .gov.my websites — now tracks DNS records as well. For now, I’m only tracking MX, NS...
The security community has been abuzz with an absolutely shocker of story from Bloomberg. The piece reports that the Chinese Government had subverted the hardware supply chain of companies like Apple and Amazon, and installed a ‘tiny chip’ on motherboards manufactured by a company called Supermicro. What the chip did — or how it did ‘it’ was left mostly to the...
Hosting an S3 site via Cloudflare From my previous post, you can see that I hosted a slide show on a subdomain on hitbgsec.keithrozario.com. The site is just a keynote presentation exported to html format, which I then hosted on an S3 bucket. The challenge I struggled with, was how to point the domain which I hosted on Cloudflare to the domain hosting the static content. The recommended way is to...
I haven’t blogged in a long while — but I have a good(ish!) excuse. I spent most of August prepping for the #HITBGSEC conference in Singapore. It was my first time presenting at a security conference, and I had an absolute blast. The output of the countless hours I spent is in the embedded youtube video below, and the presentation material can downloaded here[.key] and a html version...