#huntressctf — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #huntressctf, aggregated by home.social.
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In light of recent events, I've decided that this is an excellent time to distract myself by actually learning CommonLisp instead of just setting up SBCL and slime and then getting distracted. So, I am working my way through Practical Common Lisp and doing some Huntress CTF challenges on the side.
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We dropped the ball on those last few challenges with the #HuntressCTF cause other life stuff got in the way, but I'm still really proud of my team! 😁
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Now that #HuntressCTF has ended, I can say that I think it's pretty funny that #wezterm almost auto-solves one of the challenges...
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This is a multipart challenge. All the flags can be found within the live Microsoft 365 instance that we’ll ssh into.
The clue is street address. I’m not too fluent in the capabilities of AADInternals, so the first thing I do is head over to the documentation.
If I do a search on ‘street’ I see that it’s part of an Output example for Get-AADintTenantDetails
Ok, let’s give that command a go.
And there’s the flag under the street value.
For the next one, It not so subtly says that Conditional Access Policies will be part of this, so again we reference the docs. Get-AADIntConditionalAccessPolicies seems like a good candidate.
Two for two.
Microsoft Teams will be our focus on the third one. There’s dozens of Teams commands available within AADInternals. If we focus on message, that will get us to Get-AADIntTeamsMessages.
Having the documentation for the syntax really helped on this one.
And for the last one, no there isn’t a Get-AADIntPresident command. That would be too easy. How about a command that will show us all the users?
Scrolling up through the output, we find that the President (PattiF), has a flag in the telephone number field.
4 out of 4.
Use the tag #HuntressCTF on BakerStreetForensics.com to see all related posts and solutions for the 2023 Huntress CTF.
https://bakerstreetforensics.com/2023/11/03/huntress-ctf-week-3-m-three-sixty-five/
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Rock, Paper, Psychic
Do you want to play a game?
You can see the basic flow of the game above. You put in your choice, then after some calculation the game chooses, and what do you know – the game always makes the winning choice.
How about a nice game of Chess?
Having played the game a couple times to get familiar with the flow, I ran the program using x64dbg.
Hit F9 a few times until it the program gets to your input choice.
Once you’ve typed in your selection in the command window, back to x64dbg. From here we will step over (F8) the instructions 1 by one.
Continue to hit F8, observing as the rest of the game text appears.
Global Thermonuclear War
In x64dbg, we see that the program tests 2 values and then does a JNE (Jump if not Equal) command to another function 416C6A.
If we use the debugger and change this to JE (Jump if equal to):
Who you calling cheater?
Use the tag #HuntressCTF on BakerStreetForensics.com to see all related posts and solutions for the 2023 Huntress CTF.
https://bakerstreetforensics.com/2023/11/02/huntress-ctf-week-2-miscellaneous-rock-paper-psychic/
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Huntress CTF: Week 2 – Steganography: Land Before Time
Land Before Time Here's what we see when we open the image. Exiftool doesn't have any interesting metadata. Let's toss it into a iSteg. I think it found something. What about you? Use the tag #HuntressCTF on BakerStreetForensics.com to see all related posts and solutions for the 2023 Huntress CTF.
http://bakerstreetforensics.com/2023/11/02/huntress-ctf-week-2-steganography/
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Huntress CTF: Week 1 – WarmUps
The team at Huntress pulled off an amazing CTF that ran through the month of October with new challenges released daily. In this series, I'll be providing my solutions to the challenges. WARNING Will Robinson, spoilers ahead! Use the tag #HuntressCTF to see all related posts. Technical Support There wasn't really a solve to this one, but I'm including here for consistency.
http://bakerstreetforensics.com/2023/11/01/huntress-ctf-week-1-warmups/
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My write-ups from the #HuntressCTF by #Huntress and @JohnHammond and col.
I really enjoyed this #CTF, there were plenty of nice challenges, various categories, etc.https://malwarelab.eu/posts/huntress-ctf-2023/
#CybersecurityAwarenessMonth #contest #reverseengineering #education
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I don't usually love CTFs for learning, but a few of the #HuntressCTF challenges very skillfully placed me at my Zone of Proximal Development and got me to learn some new, powerful skills. Well done to @[email protected], HuskyHacks, and the entire the Huntress team.
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Hoooly crap today's #HuntressCTF challenge was a beast. Still under 100 solves, and I'm one of 'em.
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It was pretty funny to see my own code pop up in today's #HuntressCTF.
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There’s gonna be a LOT of new content landing on BakerStreetForensics.com next week. Currently 16 posts scheduled covering (42/52 so far) solution write-ups for the #HuntressCTF #DFIR #captureTheFlag. I’m ready for a CTF vacation! ~3 more days to go. Fantastic learning opportunity over the last month. @huskyhacksmk @JohnHammond @gleeda
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Me 19 days into the #HuntressCTF #DFIR #Malware #OSINT #Forensics #RickRolls
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CW: Snake Eater spoiler (not solution)
I started with static analysis. The .exe was created with
pyinstaller, you can extract resources from it withpyinstxtractor(https://github.com/extremecoders-re/pyinstxtractor).Then you are left with a bunch of .pyc and others. I used
pycdc(https://github.com/zrax/pycdc) to decompilesnake_eater.pyc, thinking I'd obtain some Python code with the flag in there.Alas it was no that easy. The code Python code has been obfuscated with
pyarmoras seen below. And Pyarmor is a pain. So I quit the line of statis analysis there. -
"Snake Eater" took me sooo much time and in the end it really was an easy one, as advertised! 😩
With the right tool and a search you can get it done in no time.