2017-06-16: Google Capture the Flag 2017 Quals start today

Google Capture the Flag 2017 (Quals) start today at 2am CEST tonight! The format will be pretty standard - teams / jeopardy / 48h / dynamic scoring, with one interesting addition - the submitted write-ups might win rewards ($100 - $500) as well - see the rules for details. In any case, I hope it turns out to be a fun and challenging CTF - I personally have every reason to hope the best, as the people behind the scenes are both amazing and experienced. And hey, there is even one task from me :)

I wish you all best of luck!


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2017-06-16: Wyniki konkursu na ulepszenie Guru Panic of Death

Czas ogłosić wyniki konkursu (na śliczny Guru Panic of Death) ogłoszonego na ostatnim streamie, jak i na blogu! Temat lub termin chyba nie za bardzo Wam przypadły do gustu, bo przyszły jedynie trzy prace, które dodatkowo są dość zbliżone jeśli chodzi o poziom skomplikowania (screeny można zobaczyć poniżej). Tym łatwiej o wygraną :)

Niemniej jednak zwycięzca może być tylko jeden, więc bez dalszego przeciągania chciałbym pogratulować pajadamowi (do którego wędruje giftcard 50 GBP), którego praca najbardziej przypadła mi do gustu, jak i wymagała najwięcej pracy.

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Five newest or recently updated notes (these are unfinished posts, code snippets, links or commands I find useful but always forget, and other notes that just don't fit on the blog):

Click here for a list of all notes.

EN Security papers and research notes

Some conference slides are linked at the bottom of this page.

EN Selected vulnerabilities

The full list of vulnerabilities discovered by me (including collaborative work) can be found here (please note that the list might be out of date).

The Google Application Security / Research site might also contain some of my findings.

EN Coding (selected posts)
EN Tools and libraries
  • PiXieServ is a simplified PXE (network boot) server for Windows and Linux-based OS, created for testing of very small home-made OS. See also the post about it.
  • ExcpHook, a system-wide exception monitor for Windows XP 32-bit. Useful if you're fuzzing something that doesn't like having a debugger attached.
  • Ent is an entropy measuring tool for reverse engineering reconnaissance (see also a post explaining how to use it).
  • HiperDrop is a simple command line process memory dumper for Windows, with a few different work modes.
  • asmloader - this little app executes headerless machine code (compiled assembly code). It's meant to be an aid in learning/teaching and playing with assembly, as well as the right tool when you just need to execute some machine code.
  • NetSock is a simple socket/networking lib/wrapper for C++ I've wrote back in 2003 and update from time to time - I use it for most of my network-enabled projects.
PL Videotutoriale i podcasty [ 0 views | 0 videos | 0 subscribers ]

Subscribe to me on YouTube W wolnym czasie prowadzę videocasty na żywo o programowaniu, reverse engineeringu oraz hackingu/security:

Livestream | Kanał na YT | Archiwum starszych odcinków

Najnowszy odcinek: Gynvael's Livestream: OSDev #5 (17.06.2016 19:00)
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Dodatkowo: ReverseCraft - starsza seria podcastów o reverse engineeringu i assembly.

PL Edukacyjnie (wybrane posty)

Dla programistów:

Security / hacking:

  • Hacking - jak uczyć się security/hackingu i spać spokojnie.

Dodatkowo, kilka przemyśleń na temat odnajdywania się na rynku pracy w IT:

PL Programowanie (wybrane posty)

← trochę więcej postów jest po angielskojęzycznej stronie.

PL Gamedev i GFX (wybrane posty)

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