StalkR's Blog

In my last blog post , I described The Gomium Browser, a pwn challenge of the Google CTF 2019 finals that 4 teams (pasten, 5BC, p4, A*0*E) ...

Last weekend were the Google CTF 2019 finals in London with 10 invited teams, part of a larger event named ESCAL8 with VRP researchers (Bu...

It was DEFCON 21 quals last week-end, with new organizers . It went well, good organization and good challenges. If you're curious abou...

Again this year was ShmooCon 's Ghost in the Shellcode warm-up round or Teaser ( @ShellGhostCode ). Congrats to Eindbazen for winning!...

May 19th-20th was Hack in the Box Amsterdam 2011 security conference in the Netherlands, also holding a CTF . To participate, you had to qu...

Challenge #18 "A small bug" was a common TOCCTOU bug very interesting to exploit reliably. @hellman already did a write-up on...

Challenge #19 "Another small bug" was a stack-based buffer overflow. Djo ( @shell_storm ) has already published a write-up ( e...

Challenge #26 "Hashcalc2" was very similar to Hashcalc1 . Again, a good write-up is already available on sleepya's blog . He...

Challenge #22 "Hashcalc 1" was binary exploitation over the network. A good write-up is already available on sleepya's blog ...

As @dinodaizovi nicely put on twitter , CTF team Plaid Parliament of Pwning have gone from winning everyone else's CTFs to hosting the...

Last week was held the first-ever Honeynet project public conference in Paris at ESIEA . Great speakers, interesting conferences ( slides ...

Last week-end was ShmooCon CTF Warmup Contest (aka Ghost in the Shellcode 2011). Three challenges, the last one being an ELF binary + host...

Recently I've been playing with gdb 7.2 and python . It extends what we can have with a great .gdbinit such as gdbinit73 . As examples,...

I did not solve challenge 19 "magicwall" during the CTF - my friend Ivanlef0u ( @Ivanlef0u ) did - but since Fluxfingers ( @flu...

Challenge #9 entitled "bottle" was original and worth its 500 points. We were given the following network capture and instructed ...

Last week was hack.lu 2010 security conference as well a high quality CTF organized by fluxfingers CTF team. Again I played with Nibbles a...

The forensics challenge given at CSAW CTF weren't exactly what I was expecting, but still we achieved to solve most of it. Here are my ...

For exploit3, we were given the following instructions: Get Root. Get the key. If only I can jump over the mountain without being normal s...

A few weeks ago was held Leet More CTF where Nibbles ended 1st ! Didn't have the time to put some write-ups, but you can find some on n...

smpCTF challenge #5 was forensics: we were given the file forensic1-image and instructed to find a flag. As usual, we start our analysis...