Collaborate Disseminate
I am writing a C program in which I have a client on a process and a server on another process on the same machine. I don’t know much about IPC, I would like to have a "channel" that allows my two processes to communicate without… Continue reading Private IPC between two processes
My reverse shell is exiting when i lsten it with netcat: here is netcat output:
listening on [any] 5555 …
connect to [10.9.3.117] from (UNKNOWN) [10.10.47.117] 37602
bash: cannot set terminal process group (873): Inappropriate ioctl for … Continue reading Reverse PHP shell exit when netcat listening
I have some doubts as to how cron executes commands and its output. Suppose I have the following cronjob:
*/5 * * * * root /home/user/shell.sh.
shell.sh:
#!/bin/bash
echo "hello"
bash -i
What I want to know is how cronjob execut… Continue reading Question regarding the execution of reverse shells in cron
I was routinely checking up all my servers, I found a strange process with kthreaddk command running up and taking up all 100% CPU resources. After checking it out I found that www-data (default user for php-fpm) has shell access. so I had… Continue reading Cyptomining on my AWS VPS
I bought a second-hand laptop from a stranger. My (totally unjustified) concern is that there might be malware on the device.
According to this answer, there is no easy fix if it’s malicious firmware. I don’t know how easy it is to implant… Continue reading Using ATA Secure Erase after buying a second-hand laptop : is this enough?
One can find policy advised regarding power user accounts on UNIX systems described as :
Disable root account access (for example by changing default terminal to /usr/sbin/nologin
Only authorize compartimented sudo commands access
My (be… Continue reading Security policy regarding sudo and root account disabled
If you crave experiencing or reliving what computing was like “back then” you have a lot of options. One option, of course, is to load an emulator and pretend like …read more Continue reading Compute Like it is 1975: 6th Edition Unix Reborn
“FreeBSD, the other Linux, reached version 13,” writes long-time Slashdot reader undoman. “The operating system is known for its stable code, native ZFS support, and use of the more liberal BSD licenses.” Phoronix highlights some of the major new impro… Continue reading FreeBSD 13 Released
The team behind UNIX also built another operating system at Bell Labs, writes the corporate CTO and president of Nokia Bell Labs:
Starting in the late 1980s, a group led by Rob Pike and UNIX co-creators Ken Thompson and Dennis Ritchie developed “Plan 9… Continue reading UNIX’s Founders Created Another OS at Bell Labs: ‘Plan 9’
Making a CPU or indeed a whole computer system from scratch using discrete logic chips is by no means an unusual project, but it’s still one that requires quite a lot of technical ability and understanding of how computers work. …read more