4llan | 1 year ago | on: OpenSSH Backdoors
4llan's comments
4llan | 4 years ago | on: CronRAT malware hides behind February 31st
> The CronRAT adds a number of tasks to crontab with a curious date specification: 52 23 31 2 3. These lines are syntactically valid, but would generate a run time error when executed. However, this will never happen as they are scheduled to run on February 31st. Instead, the actual malware code is hidden in the task names and is constructed using several layers of compression and base64 decoding.
The actual malware uses the task name from these "never occurring crontab". The invalid date is just a kind of signature.
4llan | 7 years ago | on: Assembly Language for Beginners [pdf]
Fun fact: both books have precisely the same content
4llan | 7 years ago | on: The Stuxnet worm may be the most sophisticated software ever written
"Zero Days" documentary is focused on Stuxnet. https://www.imdb.com/title/tt5446858/
4llan | 8 years ago | on: My account is sending spam emails
I have this problem with my Hotmail/Outlook account for almost 5 years and Microsoft team don't even understand what's going on. - https://answers.microsoft.com/en-us/outlook_com/forum/oemail...
4llan | 9 years ago | on: Updates to our Google Voice apps
They just don't admit how hard did they failed in communications apps. Clearly priority and focus issues.
page 1
https://news.ycombinator.com/item?id=39878681
xz/liblzma: Bash-stage Obfuscation Explained