(Not So) Smart Contracts
This repository contains examples of common TON smart contract vulnerabilities, featuring code from real smart contracts. Utilize the Not So Smart Contracts to learn about TON vulnerabilities, refer to them during security reviews, and use them as a benchmark for security analysis tools.
Features
Each Not So Smart Contract consists of a standard set of information:
- Vulnerability type description
- Attack scenarios to exploit the vulnerability
- Recommendations to eliminate or mitigate the vulnerability
- Real-world contracts exhibiting the flaw
- References to third-party resources providing more information
Vulnerabilities
| Not So Smart Contract | Description |
|---|---|
| Int as boolean | Unexpected result of logical operations on the int type |
| Fake Jetton contract | Any contract can send a transfer_notification message |
| Forward TON without gas check | Users can drain TON balance of a contract lacking gas check |
Credits
These examples are developed and maintained by Trail of Bits.
If you have any questions, issues, or wish to learn more, join the #ethereum channel on the Empire Hacking Slack or contact us directly.