Microsoft Graph API supports a Subscription Resource type that manages their webhook implementation for delivering change notifications to clients. Subscriptions are enabled for several resources, including Outlook messages — this was a perfect fit for my need to manage incoming messages to a shared inbox in O365. At a high-level, an implementation looks like this: …
A couple of weeks ago, Netflix disclosed a number of resource exhaustion vulnerabilities (identified by Jonathan Looney) present in many third party HTTP/2 implementations. Notably, this directly affected h2 endpoints in Kubernetes (GoLang libraries net/http, x/net/http2) as well as other projects like nginx. Yes, it even has a logo. Though DoS weaknesses usually aren’t particularly …
For those unfamiliar with modern advertising tech, iFrame Busters are HTML files hosted on publisher sites which allow ad creatives to extend outside of their standard boundaries. These expandable creatives are typically easy to identify on a site — usually the most annoying ads shown on a page. Background The ad tech industry is quite …
While recently comparing cloud storage solutions, I was surprised to learn there are still companies offering unlimited storage plans. OpenDrive is one such company — not to be confused with the OpenDRIVE format specification — offering unlimited options for personal, business, and enterprise customers. In addition to traditional cloud storage, they also offer backup and content …
PNC is a large financial services company with operations in both consumer and corporate sectors, predominantly located in the eastern and central United States. While making some account changes with them a few months ago, I had to exchange numerous sensitive documents with various employees within the organization. While most of the process was pretty …
In part 1 of this series, I analyzed the firmware of the OBi200 and walked through exploiting some RCE vulns to pop a shell. In part 2, I covered the process of identifying and connecting to the board’s undocumented UART port to access the console. This post will cover cross-compiling 3rd party binaries from source …
In part 1 of this post, I wrote about analyzing the firmware of the OBi200 and getting a root shell leveraging an existing RCE vuln. In this post, I’ll cover the process of identifying the serial port pins and connecting them to get console access to the device. Protocol Recall the serial interface listening at …
The OBi200 by Obihai is a VoIP gateway for home/SOHO that integrates with Google Voice. It supports most standard VoIP features out of the box and can integrate with virtually any “bring your own device” SIP service. I purchased one earlier this year to act as a landline in my home (without monthly fees) and …
Earlier this year I received a Nextdoor message from my County Police Department announcing a “Property LockBox App” they’d released (purchased) for citizens. There was no previous communication regarding this app that I could find, so I was interested in learning more about it. As the app description states, Bright City is “[a] 2-way, dedicated mobile application for cities …
Verizon Messages (Message+) is a group of software clients available for mobile, desktop, and web aimed at enhancing/unifying the VZW text messaging experience across multiple devices. While it has a few additional features outside of SMS, I was most interested in activating it for its web app client when at a desktop/laptop. After I installed the Android app and …
