trailofbits/manticore

Report only used calldata

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#977 建立於 2018年7月14日

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 (0 留言) (0 反應) (0 負責人)Python (3,469 star) (481 fork)batch import
ethereumhelp wanted

描述

Track what is used of the calldata so the ports look better. ex. only 4 bytes used here:

Transactions Nr. 2
Type: CALL (0)
From: attacker(0x1bfa530d5d685155e98cd7d9dd23f7b6a801cfef) 
To: contract0(0x67518339e369ab3d591d3569ab0a0d83b2ff5198) 
Value: 0 (*)
Data: 633ab5e063636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363636363 (*)

貢獻者指南

技術棧
python
領域
tooling
議題類型
feature
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
2
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
under 1 hour
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
Python
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
70
研究方向
Investigate the report generation code in manticore, likely in manticore/core or manticore/ethereum modules. Identify where full calldata is printed and modify it to only show the bytes that are actually used by the contract. The example shows the first 4 bytes (function selector) are used; implement logic to detect used bytes based on execution trace or calldata consumption.