Pentest Smart Contracts: Solidity, Foundry, Slither
Auditoria de smart contract Solidity/Vyper — reentrância, integer over/underflow, oracle manipulation, access control, MEV, flash loan attack.
Why now
The real pain
Protocolo DeFi vaza milhões/hora quando smart contract tem bug. Pre-mainnet audit é higiene mínima. Pós-deployment, monitoring de exploit e governance attack é contínuo.
Applicable frameworks
/attack-surface
Pentest Smart Contracts
Every engagement is designed for your environment. The points below are part of our standard playbook for this sector — final scope is adapted to your stack and contract.
Reentrância (SWC-107)
Cross-function, cross-contract, read-only reentrancy via view function.
Integer over/underflow (SWC-101)
Solidity <0.8 sem SafeMath, custom math sem checked-arithmetic.
Access control (SWC-105/106)
Função pública sem modifier, owner mal definido, multisig fragility.
Oracle manipulation
Spot price manipulation, flash loan + oracle, TWAP gaming.
MEV e front-running
Sandwich attack, generalized front-running, time bandit.
Governance attack
Token holder vote manipulation, proposal injection, timelock bypass.
/methodology
Genuinely manual pentest
Automated scanners find what's documented. Real attackers find what isn't. 90% of the work is manual — performed by specialists holding OSCP, CISSP, CRTO and GPEN.
01 · Reconnaissance
Target mapping, OSINT, footprint, sector-specific threat modeling.
02 · Discovery
Deep enumeration, complementary scanning, manual exposure identification.
03 · Exploitation
Manual validation with controlled PoC, finding chaining, escalation.
04 · Report
Executive + technical, step-by-step replication, mapped to applicable regulation.
/why-trust
Who has trusted our work
Auditoria pré-mainnet para protocolos DeFi e NFT em redes Ethereum, Polygon e L2s.
Technical assessment recognized in highly regulated, mission-critical environments — the pentest that finds what nobody had found before.
Douglas Lopes
Founder · CEO · intrus.io
/faq
FAQ — Pentest Smart Contracts
Vocês usam Slither + Mythril + Foundry?
Sim como insumo — depois auditoria manual linha-a-linha por dois auditores Solidity sêniors com cross-review.
Faixa de preço?
Smart contract simples (até 500 LoC): R$ 15-40k. Protocolo DeFi (5k+ LoC): R$ 50-180k. Auditoria contínua de upgrade: R$ 8-25k/mês.
/contact
Auditar smart contract
Schedule a confidential meeting. Within 48h we'll send a proposal with scope, timeline and pricing.