barrebas.github.io barrebas.github.io

barrebas.github.io

staring into /dev/null

This CTF lasted only twelve hours. I focused on the pwnables, this one was worth 100 points but could’ve been way more!

http://barrebas.github.io/

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staring into /dev/null | barrebas.github.io Reviews
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This CTF lasted only twelve hours. I focused on the pwnables, this one was worth 100 points but could’ve been way more!
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staring into /dev/null | barrebas.github.io Reviews

https://barrebas.github.io

This CTF lasted only twelve hours. I focused on the pwnables, this one was worth 100 points but could’ve been way more!

INTERNAL PAGES

barrebas.github.io barrebas.github.io
1

PoliCTF 2015 - John’s Shuffle - staring into /dev/null

http://barrebas.github.io/blog/2015/07/12/polictf-2015-johns-shuffle

PoliCTF 2015 - John’s Shuffle. John’s Shuffle was a 350 point pwnable for PoliCTF 2015. Here’s how I cracked it! Again, it’s a 32 bit ELF binary. Running it yields the following:. It all began as a mistake. It all began as a mistake. It all began as a mistake. Not very useful. The disassembly provided some hints, for it had functions like. The program kicks off by clearing a lot of stack space and calling. Then, it asks for user input, maximum size 0x44 bytes. I decided to enter 0x44 *. Clear stack space .

2

PoliCTF 2015 - Hanoi as a Service - staring into /dev/null

http://barrebas.github.io/blog/2015/07/12/polictf-2015-hanoi-as-a-service

PoliCTF 2015 - Hanoi as a Service. Hanoi As A Service was a 50 point pwnable in PoliCTF and gave me a reason to hate PROLOG. Nc haas.polictf.it 80. As point of attack. Let’s start:. Nc haas.polictf.it 80. Welcome to the Hanoi-as-a-Service cloud platform! How many disks does your tower have? ERROR: Prolog initialisation failed:. ERROR: Syntax error: Unexpected end of clause. ERROR: * here *. Nc haas.polictf.it 80. Welcome to the Hanoi-as-a-Service cloud platform! How many disks does your tower have? I now...

3

PoliCTF 2015 - John’s Library - staring into /dev/null

http://barrebas.github.io/blog/2015/07/12/polictf-2015-johns-library

PoliCTF 2015 - John’s Library. John’s Library was worth 150 points. I was a bit rusty but I managed to grab this flag. We’re given a 32 bit Linux ELF. Upon running it, we’re presented with a library menu, where we can view titles, add them and exit the program:. Welcome to the jungle library mate! A - add element. Insert how long is the book title:. What are you trying to do. 8048731: mov eax,DWORD PTR [. 8048738: mov edx,eax. 804873a: mov eax,DWORD PTR [. Ptr to first book. 804873d: add eax,edx ;. Add l...

4

PoliCTF 2015 - and the Prophet Said - staring into /dev/null

http://barrebas.github.io/blog/2015/07/12/polictf-2015-and-the-prophet-said

PoliCTF 2015 - and the Prophet Said. After solving the first crypto challenge of PoliCTF 2015, I moved onto the 100 point challenge. The download contains a text file with base64-encoded data, which becomes a .gz archive. After decompressing, I obtained a text file with biblical text. Not my cup of tea, but I immediately saw that certain sentences were duplicated. I wrote a python script to count the occurences of lines:. Which gave me these frequencies:. And ye shall keep my statutes, and do. M NOT REAL...

5

PoliCTF 2015 - John the Dropper - staring into /dev/null

http://barrebas.github.io/blog/2015/07/12/polictf-2015-john-the-dropper

PoliCTF 2015 - John the Dropper. John the Dropper was an interesting 100 point challenge. I’d love to see how it was implemented! We’re given a host,. I started pinging the host and grabbed the output of. PING dropper.polictf.it (52.18.119.20) 56(84) bytes of data. 64 bytes from ec2-52-18-119-20.eu-west-1.compute.amazonaws.com (52.18.119.20): icmp req=1 ttl=50 time=23.8 ms. 64 bytes from ec2-52-18-119-20.eu-west-1.compute.amazonaws.com (52.18.119.20): icmp req=16 ttl=50 time=2...64 bytes from ec2-52-18-1...

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LINKS TO THIS WEBSITE

blog.zer0w1re.net blog.zer0w1re.net

Weekly Roundup #1

http://blog.zer0w1re.net/weekly-roundup-1

Hey folks. I am absolutely stealing this idea from barrebas. This is my first weekly roundup. In an effort to post more, once a week I will post something here with some interesting things I have found throughout the week. Some will be infosec related, others will just be technology or other things that I'm interested in. Of course we have to start off talking about the GHOST vulnerability! Basically this is a buffer overflow vulnerability in. Yeah, not too good to have a known exploit available for that.

diablohorn.com diablohorn.com

August | 2016 | DiabloHorn

https://diablohorn.com/2016/08

Attempting to understand security. Stay updated via RSS. Follow DiabloHorn on WordPress.com. Python raw sockets sniffing and pcap saving. Win10 secure boot inside vmware fusion. Meterpreter, registry and unicode quirk work around. Python] Poor man’s forensics. Idea: Abusing Google DLP for NSA-style content searching. IT Solutions Knowledge Base. Security on the edge. Archive for August, 2016. Python] Poor man’s forensics. Posted: August 14, 2016 in general. Sudo mac-robber mnt/ head. Class host start time.

diablohorn.com diablohorn.com

April | 2014 | DiabloHorn

https://diablohorn.com/2014/04

Attempting to understand security. Stay updated via RSS. Follow DiabloHorn on WordPress.com. Python raw sockets sniffing and pcap saving. Win10 secure boot inside vmware fusion. Meterpreter, registry and unicode quirk work around. Python] Poor man’s forensics. Idea: Abusing Google DLP for NSA-style content searching. IT Solutions Knowledge Base. Security on the edge. Archive for April, 2014. Quick POC to mitm RDP ssl. Posted: April 21, 2014 in general. So the other day I stumbled upon this. As usual....

diablohorn.com diablohorn.com

PowerShell overview and introduction | DiabloHorn

https://diablohorn.com/2016/02/06/powershell-overview-and-introduction

Attempting to understand security. Stay updated via RSS. Follow DiabloHorn on WordPress.com. Python raw sockets sniffing and pcap saving. Win10 secure boot inside vmware fusion. Meterpreter, registry and unicode quirk work around. Python] Poor man’s forensics. Idea: Abusing Google DLP for NSA-style content searching. IT Solutions Knowledge Base. Security on the edge. PowerShell overview and introduction. Posted: February 6, 2016 in general. What is PowerShell and why would you use it? One of the reasons ...

diablohorn.com diablohorn.com

November | 2016 | DiabloHorn

https://diablohorn.com/2016/11

Attempting to understand security. Stay updated via RSS. Follow DiabloHorn on WordPress.com. Python raw sockets sniffing and pcap saving. Win10 secure boot inside vmware fusion. Meterpreter, registry and unicode quirk work around. Python] Poor man’s forensics. Idea: Abusing Google DLP for NSA-style content searching. IT Solutions Knowledge Base. Security on the edge. Archive for November, 2016. Win10 secure boot inside vmware fusion. Posted: November 5, 2016 in general. Avoid a secondary dedicated laptop.

diablohorn.com diablohorn.com

March | 2015 | DiabloHorn

https://diablohorn.com/2015/03

Attempting to understand security. Stay updated via RSS. Follow DiabloHorn on WordPress.com. Python raw sockets sniffing and pcap saving. Win10 secure boot inside vmware fusion. Meterpreter, registry and unicode quirk work around. Python] Poor man’s forensics. Idea: Abusing Google DLP for NSA-style content searching. IT Solutions Knowledge Base. Security on the edge. Archive for March, 2015. Posted: March 28, 2015 in midnight thoughts. Now if you are curious how this works and how you could set this up i...

diablohorn.com diablohorn.com

December | 2014 | DiabloHorn

https://diablohorn.com/2014/12

Attempting to understand security. Stay updated via RSS. Follow DiabloHorn on WordPress.com. Python raw sockets sniffing and pcap saving. Win10 secure boot inside vmware fusion. Meterpreter, registry and unicode quirk work around. Python] Poor man’s forensics. Idea: Abusing Google DLP for NSA-style content searching. IT Solutions Knowledge Base. Security on the edge. Archive for December, 2014. Parsing the hiberfil.sys, searching for slack space. Posted: December 10, 2014 in general. The hibernation file...

diablohorn.com diablohorn.com

February | 2014 | DiabloHorn

https://diablohorn.com/2014/02

Attempting to understand security. Stay updated via RSS. Follow DiabloHorn on WordPress.com. Python raw sockets sniffing and pcap saving. Win10 secure boot inside vmware fusion. Meterpreter, registry and unicode quirk work around. Python] Poor man’s forensics. Idea: Abusing Google DLP for NSA-style content searching. IT Solutions Knowledge Base. Security on the edge. Archive for February, 2014. QP] Stop video recording your command line, I want to grep it! Posted: February 27, 2014 in MemoToSelf. Http:/ ...

fourfourfourfour.co fourfourfourfour.co

Because she was a princess she had a Pegasus. - FourFourFourFour

http://fourfourfourfour.co/2014/12/19/because-she-was-a-princess-she-had-a-pegasus

Because She Was a Princess She Had a Pegasus. To be honest I was supposed to beta test it, but I kinda didn’t get a chance to. However, it allowed me to experience the VM at the same time as everyone else. People generally work alone on VM’s, so to mix it up a bit, I decided to team up with barrebas. And own the VM as a collaboration :). So, here’s a quick walkthrough on how to root Pegasus, written by both barrebas and myself. Root@kali: # nmap -sS -p- -T5 172.16.231.132. Starting Nmap 6.47 (. Coderevie...

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staring into /dev/null

WhiteHat CTF - Pwn100. This CTF lasted only twelve hours. I focused on the pwnables, this one was worth 100 points but could’ve been way more! Read on →. PoliCTF 2015 - John’s Shuffle. John’s Shuffle was a 350 point pwnable for PoliCTF 2015. Here’s how I cracked it! Read on →. PoliCTF 2015 - John’s Library. John’s Library was worth 150 points. I was a bit rusty but I managed to grab this flag. Read on →. PoliCTF 2015 - Hanoi as a Service. Read on →. PoliCTF 2015 - Crack Me if You Can. Read on →. I’...

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