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HASHXLABS
Service

Contract review & security testing

Static analysis, invariant fuzzing and line-by-line manual review of your contracts. Every finding comes with a failing test you can run, a severity and a suggested fix.

Discuss your project What you get
What you get

Deliverables

Static analysis, invariant fuzzing and manual review. Every finding comes with a failing test.

Scoped review plan

What is in scope, what is not, and which properties we will try to break.

Findings with proof

Each issue gets a severity, a proof-of-concept test and a suggested fix.

Invariant suite you keep

The fuzzing harness stays in your repo and keeps running after we leave.

Fix verification

We re-run everything against your fixes and confirm each finding is closed.

Written summary

A plain report your team, investors or a later auditor can read.

For a launch that will hold significant value, we still recommend an independent audit on top. Our review makes that audit shorter and cheaper, not unnecessary.

Approach

How we work on this

Each step produces something you can read or run, so progress is never a matter of trust.

  1. 1

    Scope

    Read the code, docs and tests. Agree on scope, the properties to test and the timeline.

  2. 2

    Automated pass

    Static analysis to clear the obvious classes of bug quickly, triaged by hand.

  3. 3

    Manual review

    Line by line, with the business logic and economics in mind.

  4. 4

    Fuzz campaigns

    Invariant fuzzing across long random call sequences to find the paths nobody wrote down.

  5. 5

    Report & verify

    Findings with tests and fixes, then a verification pass on your changes.

Risk focus

What we test hardest

  • Reentrancy and call ordering
  • Access control and privileged roles
  • Rounding and share-price inflation
  • Oracle manipulation and stale prices
  • Proxy storage-layout collisions
  • Flash-loan driven economic paths
Related capabilities

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Blockchain developmentProduction chains, contracts and dAppsBlockchain integrationConnect ledgers to the systems you runMigration & network upgradesMove chains and contracts without downtimeBlockchain consultingArchitecture, feasibility and chain choiceLayer 2s & appchainsRollups and application-specific chainsBridges & interoperabilityMessaging and token movement across chains
FAQ

Common questions

It is a security review with tests. We do not issue certification badges, and we will tell you when an independent audit is warranted.

Yes. That is most of this work. We start from your docs and tests and ask questions early.

You still keep the invariant suite and a written account of what was tested and how.

Have a project in mind?

Tell us what you are building and what must not go wrong. An engineer who would work on it will reply.

Start a project info@hashxlabs.com