How much was lost in the Bistroo hack?

The Bistroo hack resulted in $47K in losses on May 07, 2022.

What attack technique was used in the Bistroo exploit?

The Bistroo exploit utilized Other. Understanding this attack vector is critical for smart contract auditors and developers building secure DeFi protocols.

How can developers prevent similar smart contract attacks?

Preventing smart contract hacks requires a combination of secure coding practices, thorough security audits, and understanding common attack vectors like reentrancy, oracle manipulation, and access control flaws. Smart Contract Hacking (SCH) provides hands-on training to help developers and auditors identify and prevent vulnerabilities before deployment.

Bistroo Hack

TOTAL LOST $47K

Low May 07, 2022 Other

Affected Chain 2022 Incident surface

Recovered - No recovery reported

All-Time Rank #1731 By amount stolen

Protocol Type Exploit/Other Target category

Incident Overview

On May 7th, was attacked one of the staking contract of Bistroo on BSC.

Attack transaction on BSC: 0x8c96b331…bcb748

Then funds were bridged on ETH and swapped on UniswapV2 to wETH.

Bridge transaction on BSC: https://bscscan.com/tx/0x01beb966…308632

Swap transaction: https://etherscan.io/tx/0xb6994245…0e99f2

Attacker address (BSC): https://bscscan.com/address/0xba310583…ebd38a

Attacker address (ETH): https://etherscan.io/address/0x6ea72d53…58b610

Incident Report

Protocol / Project Bistroo

Date of Incident May 07, 2022

Attack Technique Other

Classification Token

Primary Source View Post-Mortem

Protocol Information

Protocol Type Exploit/Other

Affected Token BIST

Official Website www.bistroo.io/

Protocol Twitter/X @BistrooIO

Team Public / Doxxed

Source Code Verified On-Chain

What the Attacker Needed to Succeed

Understanding the prerequisites for this type of attack helps auditors identify protocols that are most at risk and helps developers build better defenses.

Technical Knowledge Deep understanding of other and Solidity and EVM internals

Capital Required Seed capital to cover gas and initial position setup

On-Chain Access Ability to interact with smart contracts and deploy a custom exploit contract

Protocol Analysis Identification of the exploitable vulnerability in Bistroo's contract logic - root cause: token

Execution Speed Precise transaction ordering and timing to exploit the vulnerability within a single atomic block

Obfuscation Plan A strategy to launder and move stolen funds - typically through mixers, cross-chain bridges, or decentralized DEX swaps to resist tracing

What Auditors Should Check

Could this have been caught in audit? Likely — with a thorough Other audit checklist and test coverage

If you're auditing a protocol with similar architecture to Bistroo, these are the critical security checks that could have prevented this incident (May 2022).

Verify all logic paths related to Other are guarded by proper access controls and input validation
Review privileged functions (owner, admin, governance) for potential abuse vectors - centralization risks should be documented and bounded with timelocks or multi-sigs

Master these auditing techniques with hands-on labs and real exploit scenarios in the Smart Contract Hacking course.

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Sources & References

01
Source 1 https://twitter.com/BistrooIO/status/1524334339705782278

Threat Assessment

Severity Level

LOW

Attack Vector Other
Root Cause Token
Year 2022

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