newbie dive into binary


Entries from 2020-11-01 to 1 month

【rev 7.0】SOP - HITCON CTF 2020

keywords syscall oriented programming / hitcon / rev / seccomp 1: イントロ 2: 問題概要 3: バイトコード 4: え、配布コード間違えてね?と一瞬思ったけどそんなはずもなく、ただただ自分の無力を恨みながら寝ることにします、おやすみなさい 1: イント…

【pwn 40.0】syscall / vDSO Internal ~ with DragonCTF 2020 no-eeeeeeeeemoji

keywords syscall / vsyscall / vDSO / beginner / two-byte shellcode / DragonCTF 2020 1: イントロ 2: syscall MSR_LSTAR entry_SYSCALL_64 do_syscall_64 3: 64bit vDSO vDSO導入 vDSOのマッピングアドレス vDSOの初期化 ユーザ空間へのマッピング 4: 32…

【pwn 39.0】Diary - Balsn CTF 2020

keywords non-NULL terminated leak / unlimited linear overflow / forge main_arena / libc2.29 1: イントロ 2: 静的解析 3: Vulns 4: 方針 4: forge fastbinsY of main_arena to leak libcbase 5: forge linked-list of fastbins and consolidate them in…

You can cite code or comments in my blog as you like basically.
There are some exceptions.
1. When the code belongs to some other license. In that case, follow it.
2. You can't use them for evil purpose.
I don't take any responsibility for using my code or comment.
If you find my blog useful, I'll appreciate if you leave comments.

This website uses Google Analytics.It uses cookies to help the website analyze how you use the site. You can manage the functionality by disabling cookies.