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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>River Rooks | Blog Lander (Asymmetric 3-Tile Workspace)</title>
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</style>
</head>
<body>
<main class="tiling-layout">
<!-- Top Global Bar (Matching Gateway 3 Exactly) -->
<header class="global-bar">
<div class="brand-group">
<span class="status-indicator"></span>
<span>RIVER ROOKS // TECHNICAL NOTES WORKSPACE</span>
</div>
<nav class="bar-nav" aria-label="Top Navigation">
<a href="service-gateway-tiling.html" class="bar-link">Gateway 3 ↗</a>
<a href="#" class="bar-link active">&gt; Field Notes</a>
<a href="https://git.rooks.dev" target="_blank" rel="noopener" class="bar-link">Git Forge</a>
<a href="feed.xml" class="bar-link">RSS Feed</a>
<a href="index.html" class="bar-link">Catalog ↗</a>
</nav>
</header>
<!-- Hero Tile: Mission Statement & Live Filter -->
<section class="hero-tile" aria-label="Notes Mission">
<div class="hero-pretitle">SYSTEM DISPATCHES &bull; KNOWLEDGE BASE</div>
<h1 class="hero-title">Technical Notes &amp; Systems Architecture</h1>
<p class="hero-prose">
Deep technical documentation on network forensics, self-hosted hypervisor infrastructure, embedded hardware exploitation, and minimal Unix tool design.
</p>
<div class="grep-bar">
<span class="grep-prompt">dev-blog@system:~$</span>
<span style="color: var(--text-muted);">grep -i</span>
<input
type="text"
id="liveFilterInput"
class="grep-input"
placeholder="filter dispatches by keyword, hardware, or ctf..."
oninput="filterArticles(this.value)"
>
<span id="matchStats" style="color: var(--accent-green); font-size: 0.74rem;">5 dispatches loaded</span>
</div>
</section>
<!-- Asymmetric Split Grid -->
<div class="split-grid">
<!-- Left Column: Featured Articles & Primary Feed -->
<div style="display: flex; flex-direction: column; gap: 16px;">
<!-- Tile: Featured Article 1 (Hardware Lead) -->
<section class="tile article-container" data-keywords="firmware hardware security spi bus-pirate flash extraction" aria-label="Lead Article 1">
<div class="tile-header">
<div class="tile-title">
<span>// FEATURED WRITE-UP 01</span>
</div>
<span class="tile-meta">2026-07-20 &bull; 8 MIN READ</span>
</div>
<div class="featured-entry">
<div class="entry-badge-row">
<span style="color: var(--accent-amber); font-weight: 700;">[PINNED RESEARCH]</span>
<span style="color: var(--text-muted);">~/notes/iot-firmware-spi-extraction.md</span>
</div>
<h2 style="margin: 0;">
<a href="#" class="entry-title">&gt; Reverse Engineering IoT Firmware: SPI Flash Extraction</a>
</h2>
<p class="entry-abstract">
In security audits of embedded systems, retrieving the firmware is the critical first step. When over-the-air updates are encrypted and debug ports (UART, JTAG) are disabled in production silicon, dumping physical SPI Flash memory becomes necessary. This writeup covers extracting firmware from an 8-pin SOP SPI flash chip using a Bus Pirate and flashrom.
</p>
<div class="snippet-box">
<div class="snippet-head">
<span>extract_firmware.sh</span>
<span>POSIX sh</span>
</div>
<div class="snippet-body">
<pre><code># Query the SPI flash details using flashrom via Bus Pirate
flashrom -p buspirate_spi:dev=/dev/ttyUSB0,spispeed=1M -r firmware_dump.bin
# Verify the integrity of the binary dump by comparing hashes
if [ $? -eq 0 ]; then
echo "Dump successful. Running md5sum..."
md5sum firmware_dump.bin
fi</code></pre>
</div>
</div>
<div class="entry-footer-row">
<span style="color: var(--text-muted);">[#firmware] [#hardware] [#security] [#bus-pirate]</span>
<a href="#" class="read-pill">READ WRITEUP [8 MIN] &rarr;</a>
</div>
</div>
</section>
<!-- Tile: Featured Article 2 (Infrastructure Lead) -->
<section class="tile article-container" data-keywords="homelab docker traefik networking compose proxy acme" aria-label="Lead Article 2">
<div class="tile-header">
<div class="tile-title">
<span>// FEATURED WRITE-UP 02</span>
</div>
<span class="tile-meta">2026-07-15 &bull; 12 MIN READ</span>
</div>
<div class="featured-entry">
<div class="entry-badge-row">
<span style="color: var(--accent-cyan); font-weight: 700;">[INFRASTRUCTURE SPEC]</span>
<span style="color: var(--text-muted);">~/notes/ha-traefik-docker.md</span>
</div>
<h2 style="margin: 0;">
<a href="#" class="entry-title">&gt; Building a High-Availability Traefik Router with Docker Compose</a>
</h2>
<p class="entry-abstract">
Architecting automated TLS wildcard certificate propagation, Docker provider label routing, zero-downtime container updates, and backend health-check failover routes on bare-metal infrastructure.
</p>
<div class="snippet-box">
<div class="snippet-head">
<span>traefik-compose.yml</span>
<span>YAML</span>
</div>
<div class="snippet-body">
<pre><code>services:
traefik:
image: traefik:v3.1
command:
- "--providers.docker=true"
- "--entrypoints.websecure.address=:443"
- "--certificatesresolvers.cf.acme.dnschallenge=true"</code></pre>
</div>
</div>
<div class="entry-footer-row">
<span style="color: var(--text-muted);">[#homelab] [#docker-traefik] [#networking]</span>
<a href="#" class="read-pill">READ WRITEUP [12 MIN] &rarr;</a>
</div>
</div>
</section>
<!-- Tile: Featured Article 3 (Unix Systems) -->
<section class="tile article-container" data-keywords="posix-sh shell unix portability alpine scripts bashisms" aria-label="Lead Article 3">
<div class="tile-header">
<div class="tile-title">
<span>// SYSTEMS &amp; SCRIPTING DISPATCH</span>
</div>
<span class="tile-meta">2026-07-10 &bull; 6 MIN READ</span>
</div>
<div class="featured-entry">
<div class="entry-badge-row">
<span style="color: var(--accent-green); font-weight: 700;">[STANDARDS &amp; COMPLIANCE]</span>
<span style="color: var(--text-muted);">~/notes/posix-sh-vs-bash.md</span>
</div>
<h2 style="margin: 0;">
<a href="#" class="entry-title">&gt; POSIX sh vs. Bash: Portability in Modern Scripts</a>
</h2>
<p class="entry-abstract">
Analyzing edge-case incompatibilities, syntax overhead, eliminating bashisms, and writing fast, bulletproof bootstrapping scripts for Alpine and embedded targets conforming to IEEE Std 1003.1.
</p>
<div class="entry-footer-row">
<span style="color: var(--text-muted);">[#posix-sh] [#shell] [#unix]</span>
<a href="#" class="read-pill">READ WRITEUP [6 MIN] &rarr;</a>
</div>
</div>
</section>
</div>
<!-- Right Column: Curated Tracks & Additional Dispatches -->
<div style="display: flex; flex-direction: column; gap: 16px;">
<!-- Curated Topic Tracks Tile -->
<section class="tile" aria-label="Curated Topic Tracks">
<div class="tile-header">
<div class="tile-title">
<span>// CURATED TRACKS</span>
</div>
<span class="tile-meta">SPECIALIZATIONS</span>
</div>
<div style="display: flex; flex-direction: column; gap: 8px;">
<a href="#" class="track-tile-item">
<div class="track-title">Embedded Silicon &amp; Hardware</div>
<div class="track-meta">[1 ARTICLE &bull; BUS PIRATE]</div>
<p class="track-desc">Physical chip extraction, UART/JTAG probing, SPI dump validation.</p>
</a>
<a href="#" class="track-tile-item">
<div class="track-title">Self-Hosted Infrastructure</div>
<div class="track-meta">[2 ARTICLES &bull; TRAEFIK &amp; WIREGUARD]</div>
<p class="track-desc">Automated edge routing, zero-trust overlay networks, VLAN firewalls.</p>
</a>
<a href="#" class="track-tile-item">
<div class="track-title">Low-Level Binary Exploitation</div>
<div class="track-meta">[1 ARTICLE &bull; GLIBC HEAP]</div>
<p class="track-desc">Memory allocator internals, tcache safe-linking mangling bypass.</p>
</a>
<a href="#" class="track-tile-item">
<div class="track-title">Zero-Allocation Tooling</div>
<div class="track-meta">[1 ARTICLE &bull; POSIX SH]</div>
<p class="track-desc">High-throughput logging, shell parser ASTs, minimalist runtimes.</p>
</a>
</div>
</section>
<!-- More Articles in Archive Tile -->
<section class="tile" aria-label="Additional Dispatches">
<div class="tile-header">
<div class="tile-title">
<span>// CTF &amp; SECURITY WIRE</span>
</div>
<span class="tile-meta">REPORTS</span>
</div>
<div style="display: flex; flex-direction: column; gap: 10px;">
<!-- Post 4: Heap Exploitation -->
<div class="compact-feed-item article-container" data-keywords="ctf binary exploitation heap glibc 2.35 memory security">
<span class="compact-date">2026-06-28 &bull; 15 min read</span>
<a href="#" class="compact-title">&gt; CTF Write-up: Heap Exploitation in glibc 2.35</a>
<p style="font-size: 0.8rem; color: var(--text-muted); line-height: 1.45;">
Deconstructing tcache safe-linking pointer mangling, bypass primitives, and House of Apple file structure hijacking.
</p>
<div style="font-family: 'IBM Plex Mono', monospace; font-size: 0.72rem; color: var(--text-muted); margin-top: 4px;">
[#ctf] [#binary-exploitation]
</div>
</div>
<!-- Post 5: Zero-Trust WireGuard -->
<div class="compact-feed-item article-container" data-keywords="networking wireguard security zerotrust opnsense vlans">
<span class="compact-date">2026-06-14 &bull; 10 min read</span>
<a href="#" class="compact-title">&gt; Zero-Trust Network Isolation with WireGuard &amp; OPNsense VLANs</a>
<p style="font-size: 0.8rem; color: var(--text-muted); line-height: 1.45;">
Designing strict zone-based firewall rules across isolated VLANs with point-to-point WireGuard cryptographic routing.
</p>
<div style="font-family: 'IBM Plex Mono', monospace; font-size: 0.72rem; color: var(--text-muted); margin-top: 4px;">
[#networking] [#wireguard]
</div>
</div>
</div>
</section>
</div>
</div>
<!-- Global Footer Tile (Matching Gateway 3 Exactly) -->
<footer class="footer-tile">
<div>River Rooks &bull; University of Alabama College of Engineering</div>
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