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簡介 Bio

Sheng-Hao Ma (aaaddress1) has over 10-year experience in reverse engineering, machine language, and Intel 8086. He has published articles about Windows vulnerability, and Reverse Engineering analysis, and was invited as a guest speaker at Black Hat Asia, DEFCON USA, VXCON, HITCON (Hackers In Taiwan Conference), CYBERSEC events, and more. 

On top of all this, Sheng-Hao Ma is a core member of CHROOT Security Group in Taiwan and is an instructor for HITCON and MOE (Ministry of Education) training course of Windows Exploit and Malware Analysis.

聯繫方式 Contact 

經歷 Outlines

  1. CHROOT 資安社群成員
  2. 工業技術研究院、資訊工業策進會 實習生
  3. iThome CYBERSEC 2020: 唉唷，你的簽章根本沒在驗啦。
  4. SITCON 2020: Playing Win32 Like a K!NG ;)
  5. HITCON CMT 2020: Reversing In Wonderland: Neural Network Based Malware Detection Techniques
  6. HITCON CMT 2019: Duplicate Paths Attack: Get Elevated Privilege from Forged Identities
  7. IEEE S&P (Co-located with Oakland) 2019: Demo: An Emulator-based Active Protection System against IoT Malware
  8. DEFCON 26: Playing Malware Injection with Exploit thoughts
  9. Black Hat 2018 Speaker: PUZZCODE, MAKE BACKDOORS GREAT AGAIN!
  10. VXCON 2018 Speaker: Implementing Software Packer
  11. HITCON CMT 2015 Speaker: Android AIDS:Automatic Intelligence De-advertisement Scheme In CSharproid
  12. HITCON CMT 2015 Speaker: 欺騙IDA Pro Hex Rays插件！讓逆向分析者看見完全不同的結果 IDA Pro Hex-Rays Decompiler Cheat
  13. HITCON CMT 2016 Lightning Talk: PokemonGo Hacking without Jailbreak
  14. HITCON CMT 2017 Speaker: Windows Injection 101: from Zero to ROP
  15. HITCON CMT 2018 Speaker: Malware Sandbox Emulation in Python
  16. HoneyCon 2018: 加密與保護：揭秘程式保護殼如何防止駭客破解你的產品
  17. SITCON 2016 Speaker: 防毒擋不住？勒索病毒猖獗與實作
  18. SITCON 2017 Speaker: 開發學校雲端服務的奇技淫巧
  19. iThome#Chatbot Day 2017 Speaker: 孫子廣播電台
  20. ICNC'17 IEEE Workshop 論文: Advertisement Removal of Android Applications by Reverse Engineering

經歷 Training

  1. HITCON Training 2019: Windows APT Warfare
  2. HITCON Training 2018: from Zero to Windows Shellcode Expert
  3. 教育部資訊安全人才培育計畫: Windows 惡意程式分析實務 
  4. 教育部資安實務攻防研習營 (Pwn, Reversing)
  5. 教育部資訊安全基礎技術工作坊 (Pwn, Reversing)

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Process Hidden In Just one line code (Windows)

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Hi there! It was an interesting case I found accidentally when building a C program to do self-update. For a Windows Programmer, it's nature to consider about using Win32 API -- MoveFileA to rename or move a file: And the interesting thing is, this API allowed us to use in the dynamic state. In other words, Windows kernel allows you to change your *.exe file name even when your program runs, or moves your self to the other directories. So I got curiosity what whould happen if the *.exe file name was not matched static file name (stored in PEB) First, I tried to change current file name when the program ran, and the result is as follow: In process explorer, the program name was displayed as the name written into PEB when file mapping. It can be found that process explorer shows process name by the file name recorded by PEB. But how is it in task manager? Task manager lists all process name with Win32 API -- EnumProcesses (I guess so), so the process name will be shown
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[C#] Lambda花式應用噁爛寫法（跨UI委派秒幹、多線程處理...etc）

為啥會有這篇呢...因為最近寫太多C# 突然發現Lambda對程式碼減化太有幫助了=...= 為了怕哪天老人癡呆忘了這些噁心的花式寫法，就開一篇Blog文紀錄了 以前在寫多線程,可能得這麼寫： void Func() {/*多線程要做的事情*/} //接著呼叫： Thread nThread = new Thread(Func); nThread.Start(); 但今天用Lambda可以改寫： Thread nThread = new Thread(() => {/*多線程要做的事情*/}); nThread.Start(); 甚至在噁心點寫的寫法： new Thread(() => {/*多線程要做的事情*/}).Start(); 簡單來說Lambda的形式可拆解成： ()是指你的函數參數列、然後可用=>代表你要接的Lambda陳述句/塊，最後用{}把事情包起來。 在來就是比較討厭的C#內要做跨UI線程操控UI上物件，會有跨UI安全性線程問題， 所以一般會額外寫個委派函數，然後請求UI Thread去處理這個委派函數請求，才能控制 這樣往往可能只用一兩次的委派函數，卻要占用一個篇幅去寫委派函數 先看看正常的跨UI委派寫法： private delegate void nCallback(string ContentText); public void n(string ContentText) { if (this.InvokeRequired) { nCallback obj = new nCallback(n); this.Invoke(obj, new object[] { ContentText }); return; } this.Text = ContentText; } //調用時呼叫n("str") 就可以改寫成： this.Invoke(new Action(() => { this.Text = "Str"; })); 又因為=>後面可接陳述塊或者陳述句，所
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