Earlier this week I imported a port for WireGuard into the OpenBSD ports tree. At the moment we have the userland daemon and the tools available. The in-kernel implementation is only available for Linux. At the time of writing there are packages available for -current.

Jason A. Donenfeld (WireGuard …

The seventh and final assignment of the SLAE64 exam states:

• Create a custom crypto like the one shown in the "crypters" video
• Free to use any existing encryption schema
• Can use any programming language

Initially I wanted to use the Tiny Encryption Algorithm but decided against it and instead chose …

The sixth assignment of the SLAE64 exam states:

• Take up to 3 shellcodes from Shell-Storm and create polymorphic version of them to beat pattern matching
• The polymorphic versions cannot be larger than 150% of the original shellcode
• Bonus points for making it shorter in length than original

When researching polymorphism …

The fifth assignment of the SLAE64 exam states:

• Take up at least 3 shellcode samples created using Msfvenom (née Msfpayload) for linux/x86_64
• Use GDB to dissect the functionality of the shellcode
• Document your analysis

One thing that immediately stands out is the relative lack in diversity when it comes …

The fourth assignment of the SLAE64 exam states:

• Create a custom encoding scheme like the "insertion encoder" we showed you
• PoC with using execve-stack as the shellcode to encode with your schema and execute

For this assignment I wrote a script which supports two encoders and it can also help …

The third assignment of the SLAE64 exam states:

• Study about the Egg Hunter shellcode
• Create a working demo of the Egg Hunter
• It should be configurable for different payloads

I for one had not heard before of the concept of an egg hunter so a little searching around led me …

The second assignment of the SLAE64 exam states:

• Create a Shell_Reverse_TCP shellcode:
  • Reverse connects to configure IP and port
  • Needs a "passcode"
  • If passcode is correct then execute a shell
• Remove 0x00 from the Reverse TCP shellcode discussed in the course

Reverse TCP shellcode

This is quite a lot simpler …

The first assignment of the SLAE64 exam states:

• Create a Shell_Bind_TCP shellcode:
  • Binds to a port
  • Needs a "passcode"
  • If passcode is correct then execute a shell
• Remove 0x00 from the Bind TCP shellcode discussed in the course

Shell Bind TCP shellcode

The first assignment is to create a shell …

Recently I decided to study for the SLAE64 course from Pentester Academy to work on my assembly knowledge, specifically on x86_64. Through the course does focus on Linux I want to apply the knowledge to OpenBSD/amd64 too and thus I installed NASM and looked at what I needed to …

The following documents the steps needed to setup NetBox on OpenBSD. I am running NetBox on a PC Engines APU which holds up fairly well and I have since migrated my own setup from RackTables to NetBox, primarily because of the API functionality NetBox offers which allows for integration with …