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bl4ck4rch
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@bl4ckarch

bl4ck4rch

@bl4ckarch
Security Researcher & Pentester at @orangecyberdef | CTF enthusiast | @hackthebox_eu MVP 2025
Paris, France
bl4ckarch.github.io
Joined October 2021
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  • Pinned
    @bl4ckarch
    bl4ck4rch
    @bl4ckarch
    Jun 25
    I was playing around AMSI and came up with some interesting bypass techniques. 6 techniques validated with a live reverse shell on a fully patched Windows 11, Defender on. bl4ckarch.github.io/posts/One-Bool… #AMSI #RedTeam #WindowsSecurity #ReverseEngineering #Pentest
    bl4ckarch.github.io
    One Bool. Six Shells. AMSI’s Design Problem.
    A research study into the Anti-Malware Scan Interface (AMSI) combining Ghidra decompilation of amsi.dll, Frida dynamic instrumentation, and live bypass testing with Windows Defender active. Six...
    2
  • @bl4ckarch
    bl4ck4rch
    @bl4ckarch
    Jul 24
    Anyone interested?
    @Salsa12__
    0x12 Dark Development
    @Salsa12__
    Jul 24
    Building out a small circle of experienced pentesters / red teamers for something I'm working on. If you know someone solid (or that's you), tag them below or DM me directly
  • @bl4ckarch
    bl4ck4rch
    @bl4ckarch
    Feb 28
    NTLM relay might be dying on Windows Server 2025. I dug into the root cause and did some reversed to see what changed. Interesting timing: Decoder-It dropped similar findings the day before I published. Full breakdown: bl4ckarch.github.io/posts/NTLM-REL… #ActiveDirectory #NTLM
    bl4ckarch.github.io
    NTLM Relay on Windows Server 2025, I spent 20 minutes convinced my lab was broken
    I thought I had skilled issued again. Reread my commands. I checked the registry. Restarted ntlmrelayx. Went through the entire checklist. It turned out it wasn’t me this time.
  • @bl4ckarch
    bl4ck4rch
    @bl4ckarch
    Oct 27, 2023
    super vidéo !!
    @Fransosiche
    Franso
    @Fransosiche
    Oct 25, 2023
    🔥Hop, première vidéo sur Active Directory, aujourd'hui, on voit (revoit) les bases; 💊Armez vous d'un peu de doliprane pour l'explication de Kerberos (et c'est pas encore la vidéo sur la délégation héhé) Hf ! 👉 youtu.be/Ykm_TLaq_dU
    Image
  • @bl4ckarch
    bl4ck4rch
    @bl4ckarch
    May 5, 2022
    I just pwned M0rsarchive in Hack The Box! hackthebox.com/achievement/ch… #hackthebox #htb #cybersecurity
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