trailofbits/manticore

Report only used calldata

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#977 opened on 2018年7月14日

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 (0 comments) (0 reactions) (0 assignees)Python (3,469 stars) (481 forks)batch import
ethereumhelp wanted

説明

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 (*)

コントリビューターガイド

技術スタック
python
領域
tooling
Issue 種別
feature
難度新しい貢献者にとっての実装難度です。1 は非常に小さな変更、5 は専門的な作業です。
2
推定時間経験ある貢献者が調査、実装、テスト、pull request 準備にかけるおおよその時間範囲です。
under 1 hour
活動状況Issue が今どれだけ取り組みやすいかを示します。新しい、活発、古い、ブロック中、またはメンテナー入力待ちなどです。
stale
明確さ期待される変更、受け入れ条件、次の手順がどれだけ明確かを示します。
clear
前提条件
Python
初心者向け度初回貢献者にどれだけ取り組みやすいかを 1-100 で推定したスコアです。
70
調査方針
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.