PlayDapp Hack

TOTAL LOST $32.4M
High #164 All-Time Access Control

Summarize with AI

ChatGPT Perplexity Claude Grok
Affected Chain 2024 Incident surface
Recovered - No recovery reported
All-Time Rank #164 By amount stolen
Protocol Type Exploit/Access control Target category

Incident Overview

Quick Summary

PlayDapp, an Ethereum-based P2E game, was exploited due to compromised private keys, resulting in a loss of 1.79 billion PLA tokens worth around 32,350,000 USD.

Details of the Exploit

PlayDapp, a P2E game running on the Ethereum chain, was exploited two times,between Feb 9-12, 2024. The root cause of the exploit was reportedly due to the compromise of private keys. Before the first exploit transactions, a new minter was added to the PlayDapp: PLA Token.

The attacker minted a total of 1.79 billion PLA tokens in two separate incidents, worth around 287,775,772 USD at the time. However, the attacker was able to convert only 32 million USD. The stolen funds were transferred to various addresses, with some being deposited on the Polygon chain, Binance exchange, and a significant portion remaining in the scammer's address as of Feb 13, 2024.

The attacker was funded by FixedFloat. A reward of 1 million USD was offered to the hacker for the immediate return of all stolen contracts and assets.

Block Data Reference

Attacker's Initial Address:

https://etherscan.io/address/0xD151050d…243a40

Attacker's Additional Addresses:

https://etherscan.io/address/0x1cae9eAa…289155

https://etherscan.io/address/0xe84d086f…2ec03c

https://etherscan.io/address/0x23cAeE36…88B07d

Funds Holders as of Feb 13, 2024:

https://etherscan.io/address/0xa03400E0…517687

https://etherscan.io/address/0xA8eF5e00…06C738

Malicious Transactions:

https://etherscan.io/tx/0xe8be05f6…51fb7e

https://etherscan.io/tx/0xc4168751…6002f8

https://etherscan.io/tx/0x5f73c86a…7e13b9

Binance Deposit Transaction:

https://etherscan.io/tx/0x964837f1…669414

Gate.io Deposit Transaction:

https://etherscan.io/tx/0x1cb750df…fa55a2

"Add Minter" Transaction:

https://etherscan.io/tx/0xe834f283…406170

Polygon Chain Bridge Transaction:

https://etherscan.io/tx/0xfae62c49…17eba4

On-chain message to the hacker:

https://etherscan.io/tx/0xb8c379f3…a31628

This is classified as a Access Control Attacks . Compare similar hacks →

Incident Report

Protocol / Project PlayDapp
Date of Incident
Attack Technique Access Control
Classification Gaming / Metaverse / Gaming / Metaverse / Gaming / Metaverse / Gaming / Metaverse / Gaming / Metaverse / Gaming / Metaverse / Gaming / Metaverse / Gaming / Metaverse / Gaming / Metaverse / Gaming / Metaverse / Gaming / Metaverse / Gaming / Metaverse / Gam
Primary Source View Post-Mortem

Protocol Information

Protocol Type Exploit/Access control
Affected Token PLA
Official Website market.playdapp.com/
Protocol Twitter/X @playdapp_io
Team Anonymous
Source Code Verified On-Chain

Market Context at Time of Hack

Token Categories
Gaming Ethereum Ecosystem Metaverse Polygon Ecosystem
Protocol Links
GitHub Discord

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 Operational-security tradecraft (phishing, malware, leaked seed phrases, or insider access) to obtain treasury signing authority
Capital Required Minimal capital - only enough to cover gas while draining the compromised accounts
On-Chain Access Valid signing authority over the compromised wallets / multisig signers, allowing direct transfer of funds or stake authorization
Target Reconnaissance Identification of PlayDapp's high-value treasury accounts and the authority / multisig structure controlling them
Execution Speed Speed to drain the compromised accounts before the team detects the breach and revokes signing authority or freezes the assets
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 Access Control audit checklist and test coverage

If you're auditing a protocol with similar architecture to PlayDapp, these are the critical security checks that could have prevented this incident (February 2024).

  • Verify all logic paths related to Access Control are guarded by proper access controls and input validation - see the Access Control Attacks attack class for patterns
  • 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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Related Attack Classes

The technique used in this hack maps to these vulnerability classes in our security curriculum:

See all Access Control Attacks examples →

Access Control Attacks

Sources & References

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