Module 26 · Smart Contract Pentest Fundamentals for Web Testers

Manish Garg
Manish Garg Associate of (ISC)² · RingSafe
May 14, 2026
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Why this module exists. Smart contract and Web3 pentest is its own discipline — the rules of “immutable, public, value-at-stake” change the testing approach entirely. This module covers fundamentals for traditional web pentesters extending into the Web3 surface.

What is different about smart contracts

  • Immutable once deployed: no patch cycle (mostly). Find the bug, lose the funds.
  • Public source code: bytecode is on-chain; usually source code published for verification.
  • Direct financial exposure: vulnerabilities translate to ETH / tokens immediately.
  • Gas economy: every operation costs; some attacks exploit gas pricing.
  • Composability: contract A calls contract B which calls contract C; integration risks compound.
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