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shubs

Co-founder of Assetnote, security researcher.

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frontier class vulnerabilities: it gets worse before it (maybe) gets better

Early in my career as a consultant, I was put on source code review engagements despite not being experienced. This forced me to deliver on projects that, looking back, were of a ludicrous size and scope for my skills at the time. Those early career opportunities kicked off an adventure

The down fall of bug bounties

A few days ago, I was reading a post by Kabir Acharya on how the CTF scene has died as a result of frontier models killing authentic competition. I couldn't really fault his points, but I started thinking about what could actually fix this. We're not

So, you want to get into bug bounties?

I've been doing bug bounties for over 10 years now and over time, I have grown fonder of the life changing effects it has had for me. From job prospects, to being able to financially support those around me and myself. I believe that if you're

The ugly side of collaboration in bug bounties

TL;DR when money is involved, things can get ugly. Your best bet is to be clear about the terms up-front and stick to the 50/50 rule. Don't share information with people you don't have the privilege to. The thing that frustrates me about the

A hackers perspective on bug bounty triage

In the last few days, I have been able to have productive conversations with my peers in the bug bounty community including Patrik who works on the triage team and Luke who leads community efforts from HackerOne. Patrik has helped clear up misconceptions and Luke, as always, has been responsive

A Glossary of Blind SSRF Chains

You can find this blog post on Assetnote's blog .

Finding Hidden Files and Folders on IIS using BigQuery

You can find this blog post on Assetnote's blog .

Hacking on Bug Bounties for Four Years

You can find this blog post on Assetnote's blog .

Expanding the Attack Surface: React Native Android Applications

You can find this blog post on Assetnote's blog .

Discovering a zero day and getting code execution on Mozilla's AWS Network

You can find this blog post on Assetnote's blog .

Gaining access to Uber's user data through AMPScript evaluation

You can find this blog post on Assetnote's blog .

High frequency security bug hunting: 120 days, 120 bugs

1) Intro & Motivations At the start of of this year, I set myself a personal goal of finding 365 bugs in 365 days. This was entirely motivated by wanting to challenge myself to find more security issues as I felt I'd been slacking off. I thought back

Using ngrok to proxy internal servers in restrictive environments

When gaining shell access to a machine on a network, a promising attack vector is to check the internal network for web applications and services that may be accessible from the machine that has been compromised. Often, internal web applications are found on the local subnets and could allow for

Abusing URL Shortners to discover sensitive resources or assets

As of late, a fair few companies and startups have been using dedicated URL shortner services to use for tracking and social media purposes. An example link from such URL shortners look like this invent.ge/1j1QxGo or invent.ge/DNATool . Note that both custom words and generated random letters+

Enumerating IPs in X-Forwarded-Headers to bypass 403 restrictions

As of late, I have been pentesting more and more applications that use some sort of mechanism to prevent unauthorized access to directories based on client IP addresses. In many cases, this has proven to be a weak method of protection if implemented incorrectly. There have been instances where spoofing