StalkR's Blog

Blog of a security enthusiast

Friday, January 14, 2011

ShmooCon CTF Warmup Contest - JavaScrimpd

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Last week-end was ShmooCon CTF Warmup Contest (aka Ghost in the Shellcode 2011). Three challenges, the last one being an ELF binary + host...
2 comments:
Thursday, January 13, 2011

Some news...

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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,...
2 comments:
Monday, November 29, 2010

Login notifications, pam_exec scripting

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If you like monitoring, you might want to receive notifications at every (or only root) login, in addition to logs. /etc/profile, bashrc, ...
17 comments:
Saturday, November 06, 2010

Exec race condition exploitations

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I recently learned a cool technique for exploiting exec race conditions. It was mentioned in a comment by Julien Tinnes about the 2009 pul...
2 comments:
Monday, November 01, 2010

Hack.lu CTF - Challenge 19 "magicwall" writeup, double strcpy

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I did not solve challenge 19 "magicwall" during the CTF - my friend Ivanlef0u ( @Ivanlef0u ) did - but since Fluxfingers ( @flu...
4 comments:
Sunday, October 31, 2010

Hack.lu CTF - Challenge 9 "bottle" writeup, extracting data from an iodine DNS tunnel

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Challenge #9 entitled "bottle" was original and worth its 500 points. We were given the following network capture and instructed ...
1 comment:
Saturday, October 30, 2010

Hack.lu CTF - sscat writeup

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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...
5 comments:
Thursday, September 30, 2010

CSAW CTF - Forensics Write-up

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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 ...
1 comment:
Wednesday, September 29, 2010

CSAW Exploit 3 Write-up - FreeBSD local root

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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...
1 comment:

CSAW Exploit 1 Write-up - FreeBSD remote stack based buffer overflow

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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...
10 comments:
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