Web3 Bug Hunting Learning Path 2026: From Zero to Your First Immunefi Report

Web3 Bug Hunting Learning Path 2026: From Zero to Your First Immunefi Report

Web3 bug hunting in 2026 is a skills ladder, not a weekend spray of mainnet exploits. This Andrax hub — by Syed Zada Abrar — maps an ethics-first path from absolute beginner to someone who can study public reports, run local-fork / CTF labs, and eventually draft an Immunefi-grade submission.

You will not find invented salaries, traffic claims, or live-drain walkthroughs here. You will find a platform map that matches 2026 reality, an ordered curriculum of spokes, and clear fences on what Andrax will never teach.

Who this path is for

This learning path is for people who want authorized smart-contract security research:

• Developers who can read some typed code and want to pivot into audits / bounties
• Web2 bug bounty hunters who already respect scope and reports, but not yet EVM economics
• Students finishing a Solidity intro who need a structured next step instead of random Discord “alpha”

It is not for anyone looking for malware, phishing kits, wallet drainers, or “test this live protocol for profit” outside written bounty / contest / VDP scope. If that fence is a problem, stop here.

Entry spoke (live): How to Start Web3 Bug Hunting in 2026 (Ethical Path Only) — mindset, legality, platform sketch, and a read-only Immunefi program checklist.

Ethics & legality fence

Every practical piece in this series repeats the same rule set:

1. Written scope only — assets, impacts, out-of-scope lists, PoC rules, KYC, disclosure policy. If it is not written, assume it is not authorized.
2. Labs = local forks, public CTFs, or official contest codebases — Foundry/Hardhat Anvil forks, Ethernaut, Damn Vulnerable DeFi, CodeHawks First Flight repos run locally.
3. No mainnet / public-testnet exploit testing — Immunefi’s Rules state that testing with mainnet or public testnet contracts is grounds for an immediate and permanent ban. Their guide Why You Should Never Test Exploits on Mainnet or Public Testnets explains the bot/copycat and live-funds risk. Report craft guidance in How to Submit Bug Reports That Get Paid expects runnable local-network / mainnet-fork PoCs, not steps-only paste and not live confirmation txs.

Deep vulnerability teaching (reentrancy, oracles, proxies, ERC-4626, and so on) is allowed inside those lab surfaces. Crime tooling and unauthorized drains are not.

2026 platform map

Platforms change. Always confirm a site still accepts submissions before you invest time. This hub does not invent payout tables or “highest paying” rankings.

Curriculum table (ordered spokes)

All tutorials in this path live under /tutorials/. Only published guides are linked in the table below.

What you’ll build next (practical ~30% of this hub’s job): after Spoke 01, you set up a burner wallet + public RPC + explorer literacy, then learn to read Solidity like a hunter, then install Foundry + Slither for local compile/test/static triage — before any in-scope bounty attempt.

Toolchain at a glance

Hardhat appears as an alternate when a target repo ships Hardhat. Mythril and full formal tools stay “later / know the limits.”

CTF → First Flight → bounty ladder

Climb in this order — do not skip to Immunefi spam:

1. Classic EVM CTFs — OpenZeppelin Ethernaut
2. Modern DeFi CTFs — Damn Vulnerable DeFi (v4 / Foundry notes); still follow responsible disclosure if you find a real bug in the platform itself
3. Beginner contests — CodeHawks First Flights for submission UX and judged feedback
4. Report craft — Immunefi section order + local-fork PoC (upcoming spokes)
5. Ongoing bounty / larger contests — Immunefi, HackenProof, Cantina, Sherlock — only after you can map scope and demonstrate impact without touching live user funds

Companion course many hunters use alongside Andrax writing: Cyfrin Updraft — Smart Contract Security.

Honest study calendars (not income forecasts) live in Spoke 01. This hub will not invent “earn $X in 90 days” claims.

How to study public reports

Treat past findings as a corpus, not a license to re-attack those contracts live:

1. Prefer primary sources: Immunefi write-ups, contest judging docs, auditor firm post-mortems, and searchable indexes such as Solodit.
2. For each report, extract: root cause class, preconditions, impact (funds/invariant), PoC style, and why triage agreed or disagreed.
3. Map the finding to IVS v2.3 language in your own words.
4. Rebuild the idea as a local Foundry test against a toy or CTF contract — never as a mainnet confirmation tx.
5. Keep a personal “anti-patterns” list: OOS noise, severity inflation, missing economics, AI spray reports (Immunefi warns/bans on low-quality automated spam — see their paid-report guide).

OWASP’s smart-contract materials (for example SC08 Reentrancy) help name classes consistently when you later hit the reentrancy spoke.

How this hub differs from a single “ultimate roadmap” post

Competitors often publish one mega-roadmap that ranks for web3 bug hunting and then stalls. Andrax’s bet is a cluster:

• Spoke 01 owns beginner how-to intent with a live ethics + scope lab
• This hub owns the curriculum map and 2026 platform accuracy
• Later spokes own depth (setup → Solidity reading → tools → vuln classes → report → submit)

That means internal links stay honest: only live URLs get hrefs. Plain-text titles for unshipped spokes are intentional SEO/IA hygiene, not unfinished copy.

Secondary intents this hub supports without keyword stuffing: smart contract security learning path, how to become a smart contract auditor (skills path — not salary promises), and a Solidity security roadmap framed as the ordered table above.

Severity literacy (Immunefi IVS snapshot)

You will specialize later; for path planning, remember Immunefi’s impact-first IVS v2.3 smart-contract examples at a high level:

Always prefer the program’s impact table over vibes. Primacy-of-Impact quirks are explained in Spoke 01 — reread that before your first submit.

What Andrax will not teach

• Drainers, phishing kits, clippers, ransomware, or other crime tooling
• How to attack protocols outside written bounty / VDP / contest scope
• How to “confirm” exploits against live user funds on mainnet or public testnets
• How to publish unpatched live vulnerabilities for clout
• Guaranteed salary, payout, or traffic numbers

We will teach deep vuln classes, Foundry PoC craft, Immunefi-aligned report structure, and 2026 platform workflow — inside authorized and local lab fences.

Next step

1. If you have not finished Spoke 01, start here: How to Start Web3 Bug Hunting in 2026.
2. Next practical spoke (live): Wallet, RPC & Block Explorer Setup for Smart Contract Hunters — burner wallet, public RPC, Etherscan/Sourcify literacy on a historical public transaction.
3. Then (live): Solidity Essentials for Bug Hunters (Read First, Write Second).

Work only on authorized bounty programs, local forks, and CTF/lab environments — never against mainnet or public-testnet deployments of in-scope code. Build competence before you submit.

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Educational content by Syed Zada Abrar for Andrax (andraxpentester.in). Authorized research only.