It has been a really long time since I last posted a writeup. So this was a challenge I solved a long time ago in the securinets CTF 2019. It is a fairly easy challenge but the good thing about this is that there are very few memory forensics challenges that we get & the majority of them are of the Windows7/XP environment. Interestingly this is from MacOS.
So let’s get on with the challenge now.
People think it’s hard to stay without a phone, but I don’t! My computer has everything a smartphone has like browsers, notes, calendars, and a lot more.
You can download the challenge file here: Mega Drive
So the first question that comes to mind is how did I find out that it was a MAC image?
Simple. the imageinfo plugin did not work. Haha
Now let us get the profile of the memory dump.
$ python vol.py -f ../contact_me mac_get_profile
Okay, so the profile is MacSierra_10_12_6_16G23ax64.
There is a reason I call this challenge very easy since the name of the challenge hints out the plugin that I must be using to probably get the flag & one such relevant plugin that I found was the mac_contacts plugin.
Let us use that plugin.
$ python vol.py --profile=MacSierra_10_12_6_16G23ax64 -f ../contact_me mac_contacts
If you are able to see, I have highlighted a certain text which looks like a base64 string and boy was I correct!
Voila! We got the flag.
I hope to write some more amazing content on mac memory forensics very soon. So, stay tuned!
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