LegacyOps™ | Expert Legacy Software Recovery & Security

Specializing in reverse engineering and securing legacy systems like Delphi, VB6, and Win32. Discover how LegacyOps™ can revive your critical software.

2025-05-05 HarrisonSec

LegacyOps™ — Fixing What Others Fear to Touch

Legacy systems are everywhere. They're running hospitals, factories, universities, and old ERP suites.
But nobody wants to maintain them — until they break.

That's where LegacyOps comes in.

🧠 What I Do

  • 🛠 Reverse engineering of undocumented binaries and legacy logic
  • 🧱 Patching Delphi/VB6/Win32 systems without source code
  • 🗂 Migration planning for Access, COM, MFC-based apps
  • 🔐 Security hardening, sandboxing, zero-trust mitigation
  • ⚙️ DLL hooking, memory patching, dynamic runtime recovery

💻 Systems I Support

  • Windows 98, XP, 7
  • Access, VC++, Delphi, Win32 API apps
  • COM, MFC, legacy ERP interfaces
  • Air-gapped or isolated medical/SCADA software

🔍 Common Questions & Search Phrases

Many of my clients found this page while searching for terms like:

  • "How to fix VB6 app without source code"
  • "Delphi ERP system crashing on Windows 10"
  • "Can't open Access 2003 file on Windows 11"
  • "Legacy software developer Canada / Vancouver"
  • "Reverse engineer MFC/COM app for patching"
  • "Automate GUI of Win32 app without API access"

If you've inherited legacy software that:
– No longer runs on modern systems,
– Has no available source code or support,
– Needs urgent bug fixes or data extraction,

Then LegacyOps™ is built exactly for you. I specialize in reversing, recovering, and securing fragile legacy stacks.

Let's talk before the last machine it runs on dies.

🧪 My Lab: Boot Any Era, Test Any Stack

Screenshot showing legacy OS virtual machines including Windows 98, 2000, XP, and forensic tools on a Windows 10 x64 VM. This illustrates a legacy-supporting security lab used for malware analysis, reverse engineering, and exploit compatibility testing.

I maintain a full virtualization lab:
FreeDOS, Windows 98 → 11, Server 2016/2019, Kali, Arch, Alpine, Ubuntu...
If your legacy system can run, I can replicate and test it.

🔐 Security Layer

  • Binary-level audit + patch
  • Threat modeling for legacy apps
  • Log monitoring + intrusion detection augmentation

📚 Real-World Cases

🔧 Fixing a Delphi VCL Print Bug (2003)

An issue in a Delphi VCL print routine caused layout misalignment and occasional GDI crashes during document generation.

I isolated the bug within the relevant printing class, modified the VCL unit source code, and recompiled the unit independently — without altering the rest of the application.

This restored stable, reliable printing behavior across affected systems and removed the need for any vendor support or external patch.

🕵️ Automating Data Extraction from a Closed BMW Dealer System (Xiamen, China, ~2010)

A BMW dealership in Xiamen, China needed a real-time dashboard to display customer repair progress in-store.

The backend system was proprietary and provided no API or export function.

I used Microsoft Spy++ to identify the top-level window by its title and obtain its handle.

From there, I enumerated child windows, captured values via Win32 APIs like GetWindowText, and parsed the UI content into structured data.

This solution eliminated manual data entry entirely — reducing operator workload from several hours per day to zero, without modifying or injecting into the original application.

🪛 Restoring a Business Tool via Binary Patch (~2014)

A company had licensed a legacy business tool but lost access to both the original vendor and the source code.

A logic bug rendered a critical feature unusable, and no official support was available.

I reversed the binary into assembly, traced the broken jump logic, and injected a runtime hex-level patch — all without touching the original source.

This fully restored application functionality and extended the system's life by several years with no disruption to users.

❓ Frequently Asked Questions

Can you fix our legacy app if we have no source code?
Yes! I specialize in binary-level analysis and patching. Using reverse engineering tools, I can often fix bugs without original source code.

Is it possible to make our old Delphi/VB6 app work on Windows 11?
In most cases, yes. I can identify compatibility issues and either patch the binary or create compatibility shims to bridge the gaps.

Our developer disappeared - can you take over maintenance?
Absolutely. I can analyze the existing codebase, document its functionality, and either maintain it directly or help transition to a modern alternative.

🎯 Engagement Options

Service Duration Estimate
Bugfix & Patching 1–2 weeks $5,000–$10,000
Reverse & Recover 1–4 weeks $8,000+
Retainer (Monthly Support) Ongoing Contact Me

📩 Contact

🚨 Ready to Rescue Your Legacy System?

Your system might be old — but your business isn't.

If you're facing legacy crashes, unmaintainable apps, or "we lost the source code" moments, I can help.
Whether it's patching, automation, or secure migration, I bring battle-tested solutions to fragile systems.

✉️ Email me with a short description of your issue — or even just a screenshot.
Let's bring it back to life.

🚀 Know someone struggling with legacy software? Copy this page link or click the share buttons below 👇

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