DefCon Qualifiers 2019 – redacted-puzzle
Solving redacted-puzzle from DefCon Qualifiers 2019
Meeting Notes 5/9
Today we hosted Ryan Gurr and Alex Ryan from Fidelis Cybersecurity, who talked about their experiences and background in information security, and showed a cool demo of Fidelis’s platform. If you have any questions for Ryan or Alex, please contact them, they said they’d love to answer any questions you may have, related to Fidelis…
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2019-2020 Officers
Here are the new officers for the 2019-2020 school year: President: Zander Work Vice President: Hadi Rahal-Arabi Treasurer: David Park Multimedia Coordinator: Adam Stewart Lab Manager: Ryan Kennedy Recruitment/Public Relations: Alex Rash Thanks to everyone who participated!
ångstromCTF – lithp
Solving a lisp challenge with no actual understanding of lisp.
ångstromCTF – streams
Problem White noise is useful whether you are trying to sleep, relaxing, or concentrating on writing papers. Find some natural white noise here. Note: The flag is all lowercase and follows the standard format (e.g. actf{example_flag}) Author: ctfhaxor Points: 70 Hint: Are you sure that’s an mp4 file? What’s inside the file? Solution First, we…
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Meeting Notes 4/18
Tonight I gave a tutorial on IDA Pro basics, and how to get started with this awesome tool. I also released some new binaries on the CTF site for you to practice IDA. Remember, as a OSU Security Club member you have access to our lab systems, which has the full version of IDA Pro…
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2019-2020 Officer Elections on April 25th
We will be holding officer elections for next school year during our regular meeting on Week 4 (April 25th). This is a great way to be more involved with the club, and represent us to the College of Engineering. Here are the positions (link goes to position duties): President Vice President Treasurer Multimedia Coordinator Lab…
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PRCCDC 2019 Results
This past weekend, OSUSEC competed at the Pacific Rim Collegiate Cyber Defense Competition (PRCCDC) hosted by Highline College. I’m pleased to announce that we placed 3rd out of 13 teams in this tough competition. PRCCDC is a 2 day competition where each team must secure a mix of approximately 10 Windows and Linux systems, configure…
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UTCTF 2019 – Scrambled
Tl;dr Cool encoding using Rubik’s cube, I wrote a Python script. This was a 1250 point Forensics challenge (highest points in the category). Here’s the description: By the time I took a look at the challenge, they had released a hint as well: Based on the hint, I quickly discovered that the challenge description described…
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UTCTF 2019 – Crackme
This was a 1200 point reversing challenge (tied for highest point value in the category). Here’s the description: This what we see when we run the binary: $ ./crackmePlease enter the correct password.>plsIncorrect password. utflag{wrong_password_btw_this_is_not_the_flag_and_if_you_submit_this_i_will_judge_you} Let’s take a look at the code in IDA Pro: Here’s what the decompilation shows: Read in 64 bytes from…
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