August 29, 2017 Communicating within 0.0.0.0/8 Recently, someone came to me with the problem that some remote IOT-devices received a broken configuration where the first octet of their IP-address was changed to 0 (i.e. from 192.168.0.4 to 0.168.0.4). Because of the location of these devices it... networking
July 17, 2017 Google CTF 2017: ASCII Art Client (reversing) This challenge came with two files: a binary without an extension and a pcap file. The binary was probably going to be a Linux-executable, and indeed: ctf
July 14, 2017 Google CTF 2017: Moon (reversing) This challenge taught me a lot about a few different things. The challenge files consist of an executable and some SDL libraries. Running the executable shows us this: ctf
July 9, 2017 Google CTF 2017: JohnnyBoy (reversing) The description for the challenge is as follows: ctf