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ClevCode – Vulnerability Research, Exploit Development, Reverse-Engineering

Vulnerability Research, Exploit Development, Reverse-Engineering. Joshua J. Drake. 31C3 CTF: Maze write-up. If I hadn’t been so sleepy/off during large parts of the CTF, I would probably have been able to score a bit more. Greets to capsl for brainstorming about the potential ROP-scenarios btw! To make this write-up more useful for people that want to learn, I have tried to make it quite detailed. The information for the challenge was:. Where do you want to go (today)? Where do you want to go (today)?

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ClevCode – Vulnerability Research, Exploit Development, Reverse-Engineering | clevcode.org Reviews

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Vulnerability Research, Exploit Development, Reverse-Engineering. Joshua J. Drake. 31C3 CTF: Maze write-up. If I hadn’t been so sleepy/off during large parts of the CTF, I would probably have been able to score a bit more. Greets to capsl for brainstorming about the potential ROP-scenarios btw! To make this write-up more useful for people that want to learn, I have tried to make it quite detailed. The information for the challenge was:. Where do you want to go (today)? Where do you want to go (today)?

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ClevCode – Vulnerability Research, Exploit Development, Reverse-Engineering | clevcode.org Reviews

https://clevcode.org

Vulnerability Research, Exploit Development, Reverse-Engineering. Joshua J. Drake. 31C3 CTF: Maze write-up. If I hadn’t been so sleepy/off during large parts of the CTF, I would probably have been able to score a bit more. Greets to capsl for brainstorming about the potential ROP-scenarios btw! To make this write-up more useful for people that want to learn, I have tried to make it quite detailed. The information for the challenge was:. Where do you want to go (today)? Where do you want to go (today)?

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clevcode.org

1

Cicada 3301 – ClevCode

http://www.clevcode.org/cicada-3301

Vulnerability Research, Exploit Development, Reverse-Engineering. Joshua J. Drake. For those of you still unfamiliar with the Cicada 3301 puzzle, it has been called “the most elaborate and mysterious puzzle of the internet age” by Metro. And is listed as one of the “Top 5 eeriest, unsolved mysteries of the Internet” by The Washington Post. Here are links to some of the articles that were written about me and my work on the original Cicada 3301 challenge back in 2012:. So, the question is whether the sequ...

2

December 2014 – ClevCode

http://www.clevcode.org/2014/12

Vulnerability Research, Exploit Development, Reverse-Engineering. Joshua J. Drake. Ghost in The Shellcode 2015 Teaser: Citadel solution. This is my exploit for the Citadel challenge in the Ghost in The Shellcode 2015 Teaser CTF. I have attached my IDB as well, so those of you with IDA Pro can see what the reversing-part of the process looked like. My final exploit code:. Exploit for the Citadel challenge from the Ghost in the Shellcode 2015 Teaser CTF. Joel Eriksson je at clevcode.org 2014. System("bash ...

3

April 2013 – ClevCode

http://www.clevcode.org/2013/04

Vulnerability Research, Exploit Development, Reverse-Engineering. Joshua J. Drake. Oldies but goldies #2: Windows GDI Kernel Exploit. Found another one of my old exploits. This one a Windows kernel exploit from 2006. :). GetOS(&dwMajor, &dwMinor) { fprintf(stderr, "Could not determine OS version. n"); return 1; } if (dwMajor! NULL) CloseHandle(hMap); lpAddr = MapViewOfFile(hMap, FILE MAP ALL ACCESS, 0, 0, 0); if (lpAddr = NULL) continue; rc = NtQuerySection(hMap, 0, &sec, sizeof(sec), 0); if (! 0) break;...

4

Codegate – ClevCode

http://www.clevcode.org/category/codegate

Vulnerability Research, Exploit Development, Reverse-Engineering. Joshua J. Drake. Codegate Quals 2012: Vuln 500. This is my writeup for the Vuln 500 challenge in the Codegate Quals 2012 competition. Movl %gs:0, %eax". Since my test program and the vulnerable programs are both linked to the same libraries, the addresses will be the same. The last address we need to determine is the address to the GOT-entry for stack chk fail():. R 386 JUMP SLOT. The final version of my exploit is as follows:.

5

April 2011 – ClevCode

http://www.clevcode.org/2011/04

Vulnerability Research, Exploit Development, Reverse-Engineering. Joshua J. Drake. PlaidCTF 2011 – 21 – Key leak – 450 pts. This is my writeup for the twenty-first challenge in the PlaidCTF 2011 competition. The information for the challenge was:. 8220;We have obtained the binary for AED’s internal data encryption service, running at a9.amalgamated.biz:10240. Obtain AED’s data encryption key.”. Je@isis: /ctf/PlaidCTF-2011/21-Key leak/solution$ cat keyleak-xpl.pl #! Vtable pointer @ fp 148 vtable offset.

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MyNav, a python plugin for IDA Pro | Unintended Results

http://joxeankoret.com/blog/2010/05/02/mynav-a-python-plugin-for-ida-pro

MyNav, a python plugin for IDA Pro. Is an Open Source. Plugin for the commercial disassembler IDA Pro. To be released on July 2010. The plugin adds a lot of new features only available in other products like in the well known Zynamics. 8216;s Inspector. In this blog post I will show you some of the features available in the current version with some examples. Depending on the selected maximum recursion level, some child nodes will be hidden like, for example, the childs nodes of the function “? In this g...

metro.co.uk

Cicada 3301: The most elaborate puzzle of the internet age | Metro News

http://metro.co.uk/2013/12/16/cicada-3301-the-most-elaborate-and-mysterious-puzzle-of-the-internet-age-4229892

This site uses cookies. By continuing, your consent is assumed. Learn more. News but not as you know it. Cicada 3301: The most elaborate and mysterious puzzle of the internet age. Monday 16 Dec 2013 6:00 am. Who or what is behind Cicada 3301? At the beginning of 2012, an image that appeared on internet forum 4chan. Pitched the world’s elite code-breakers and puzzle solvers against one another. It was posted by a mysterious organisation known only by its name: Cicada 3301. So who are Cicada 3301? Solvers ...

alloroprimos.blogspot.com

Al loro...: febrero 2014

http://alloroprimos.blogspot.com/2014_02_01_archive.html

Nuestro Camino a Santiago. Todo a cien. (O casi). Sin permiso de la autoridad. Cuando llegamos al caracol aquí en La Realidad, sin que nadie nos lo dijera empezamos a hablar en susurros. Quedo hablaba nuestro dolor, quedito nuestra rabia. Jueves, 6 de febrero de 2014. El canto de la Cigarra. 191;Has leído alguno de los famosos libros de Dan Brown? 191;Esos en los que el profesor universitario Robert Langdon va descifrando pistas por medio mundo hasta llegar a encontrar algún tesoro de valor incalculable?

github.com

clevcode (Joel Eriksson) · GitHub

https://github.com/clevcode

X6a;e@clevcode.org. Http:/ www.clevcode.org/. Jun 12, 2012. Place SSH users in Docker jails, or just use it as a replacement for docker-bash / dockersh. Reverse engineering framework in Python. Platform for Architecture-Neutral Dynamic Analysis. A Miasm2 based function divination. A simple attack against gcc and Python via kernel module, with highly detailed comments. 0 contributions in the last year. Summary of pull requests, issues opened, and commits. Learn how we count contributions.

albertveli.wordpress.com

SweCTF 2015 Write-up | Arkeoblog

https://albertveli.wordpress.com/2015/03/23/swectf-2015-write-up

Mystiskt om avkryptering →. Mars 23, 2015. Den 20-22 mars pågick. Jag registrerade mig för skojs skull utan några förhoppningar om att ta några flaggor alls. Men det slutade med att jag kom på plats 8 (av 30 deltagare) och faktiskt löste 5 av de 10 uppgifterna. Ettan ( OwariDa. Och tvåan löste alla 10. Kort dokumentation om hur jag löste mina 5. Den här var väldigt enkel. Så kom flaggan direkt som dm i irc-chatten. Binären radio.zip innehöll en fil,. Filen ruzilla.zip innehöll filen ruzilla:. Som name&#4...

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While there are many companies in this industry that provide services such as basic forms of penetration testing, and other services relying mostly on automated tools, ClevCode is intent on providing something more than that. Our goal is to gather the best of the best, in order to be able to find and fix critical vulnerabilities before the bad guys do. Security Guru Gives Hackers a Taste of Their Own Medicine. Kernel Wars: Kernel Exploitation Demystified. Kernel Wars @ BlackHat Europe. Here are links to ...

clevcode.org

ClevCode – Vulnerability Research, Exploit Development, Reverse-Engineering

Vulnerability Research, Exploit Development, Reverse-Engineering. Joshua J. Drake. 31C3 CTF: Maze write-up. If I hadn’t been so sleepy/off during large parts of the CTF, I would probably have been able to score a bit more. Greets to capsl for brainstorming about the potential ROP-scenarios btw! To make this write-up more useful for people that want to learn, I have tried to make it quite detailed. The information for the challenge was:. Where do you want to go (today)? Where do you want to go (today)?

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