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Authenticode Challenge – Solution Part 1
I’m starting a couple of posts with detailed explanations and solutions for my Authenticode Challenge. Let’s start with a solution using standard tools. If you’re a bit into cryptography, you know that...
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CALL -151
A quiz question for today: what is CALL -151? Shout-outs to everyone who ever used CALL -151! Update: The answer:
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Picture Puzzle
As I announced via Twitter, here’s a new puzzle. Find the message I’ve hidden in this picture. First one to post a comment with the correct answer can get a sticker. For those who don’t know, comments...
View Article35 Year Old Puzzle
Here’s a 25 35 year old puzzle (it’s not mine). I’m curious if you’ll find the solution without using Google. First one to post a comment with the solution gets a sticker (and I’ll have “PDF –...
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The Brucon WiFi Puzzle Solution
Here’s one way to solve the Brucon WiFi Puzzle: open the capture file with Wireshark. The capture file contains one beacon frame for the brucon09wifi network. If you’re a bit familiar with beacon...
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A Win7 Puzzle…
I’m presenting you a little puzzle… The prize is a Windows 7 Ultimate license. Unless you don’t care for Windows, then you get a sticker The puzzle contains a text. Find it and post it in a comment to...
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Solving the Win7 Puzzle
The Win7 puzzle is actually a “PDF bomb”, something I’ve hinted at long ago but I hadn’t published a sample. The PDF contains a doubly compressed object stream, which is around 100 MB large when...
View ArticleAnother PDF Puzzle
As I’m going to give my workshop on analysis of malicious PDFs at HiTB Amsterdam this Thursday, I thought I would share a PDF puzzle/challenge I made for BSidesLondon. You can download it here. And as...
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A Return: The Puzzle
It’s been some time that I posted a puzzle. So here is a new little puzzle. What is special about this file?
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BlackEnergy .XLS Dropper Puzzle
Over at the ISC diary I posted an entry with a puzzle to help you to practice the extraction of an embedded file in a spreadsheet. This is the image I embedded:
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