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Nick Frichette - Blog

Personal blog, focused on information security. AWS, Web apps, offensive techniques, and more.

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Latest posts

How Hotel Wi-Fi Broke My Tailscale Peer Relay

How to setup Tailscale peer relays to listen on multiple ports.

Amplified exposure: How AWS flaws made Amplify IAM roles vulnerable to takeover

Public disclosure of a vulnerability in AWS Amplify which exposed IAM roles associated with Amplify projects to be assumed by anyone in the world.

Two Minor Cross-Tenant Vulnerabilities in AWS App Runner

Writeup for two minor cross-tenant vulnerabilities I found in AWS App Runner.

Using an Undocumented Amplify API to Leak AWS Account IDs

Writeup for a technique I found to leak an AWS account ID from an Amplify app.

A Look at AWS API Protocols

An introduction to AWS API protocols and how they work.

A Confused Deputy Vulnerability in AWS AppSync

Datadog: Technical analysis of a confused deputy vulnerability I found in AWS AppSync.

OpenSSL Punycode Vulnerabiliy (CVE-2022-3602)

Datadog: A technical analysis of the OpenSSL punycode vulnerability.

Revisiting Lambda Persistence

Revisiting and building on the original Lambda persistence technique.

XSS in the AWS Console

Writeup for a cross-site scripting bug I found in the AWS Console.

Intercept SSM Agent Communications

Research on post-exploitation techniques against SSM Agent abusing send-command and start-session.

Enumerate AWS API Permissions Without Logging to CloudTrail

Writeup for a bug I discovered in the AWS API that would allow you to enumerate certain permissions for a role without logging to CloudTrail.

Abusing AWS Connection Tracking

Tunnel out of restricted security groups by abusing connection tracking.

Abusing GitLab Runners

Some research I did on abusing GitLab Runners to steal information by emulating a runner's behavior.

CVE-2020-11108: How I Stumbled into a Pi-hole RCE+LPE

Writeup for CVE-2020-11108 covering how I found the vulnerability and how it can be exploited for fun/profit.

Escalating Deserialization Attacks (Python)

Demonstrating how to exploit deserialization attacks in Python 2/3

Intercept Linux CLI Tool Traffic

A guide on how to intercept Linux CLI tool traffic with Burp Suite

Bypass GuardDuty PenTest Alerts

A guide to bypass the GuardDuty PenTest Finding Type

Hijacking IAM Roles and Avoiding Detection

A guide on how to steal IAM role keys and use them without being detected

IDOR Attacks

An introduction to IDOR attacks

Security Headers: Content Security Policy

An in depth overview of the Content Security Policy header

Angular Universal: Some Insights

Some advice based on my experience with Angular Universal

OSCP Review

My thoughts and experiences with the OSCP