August 2024
Intermediate to advanced
660 pages
9h 58m
Japanese
Content preview from Binary Hacks Rebooted ―低レイヤの世界を探検するテクニック89選
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2章ELF HackHack #4–21
Executable and Linkable Format（ELF）とはLinuxで広く使われている実行可能ファイルや共有ライブラリ等のフォーマットです。普段はあまり気にすることはありませんが、私たちがELFファイルを起動する際には実にさまざまな処理が行われます。それらの処理を知り、ELFファイルの各フィールドがどのように扱われるかを理解するとさまざまなHackが可能になります。また、ELFと一緒に使われるフォーマットとしてデバッグ情報を格納するためのDebug With Arbitrary Record Format（DWARF）というフォーマットもあります。DWARFもまたHackしがいのあるフォーマットであり、本章の最後で驚異のDWARFマジックをご覧に入れます。
![[level-easy]](/api/v2/epubs/urn:orm:book:9784814400850/files/images/level-easy.png)
HACK #4 ELFファイルのセグメント
このHackではELFファイルのセグメントを解析します。
Executable and Linkable Format（ELF）フォーマットはLinuxで実行バイナリ、共有ライブラリ、オブジェクトファイル等のフォーマットとして広く使われています。ELFフォーマットには3種類のヘッダがあります。1つ目はELFヘッダで、これはほか2つのヘッダへのオフセットやOS、アーキテクチャの情報を保持しています。2つ目はセクションヘッダでリンカやデバッガなどが参照します。3つ目はプログラムヘッダで、主に実行時にダイナミックリンカやカーネルが参照します。実行ファイル ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.