gdbghidra - a visual bridge between a GDB session and GHIDRA

https://github.com/Comsecuris/gdbghidra

gdbida - a visual bridge between a GDB session and IDA Pro's disassembler

https://github.com/Comsecuris/gdbida

This page deals with the PE format, or more specifically, x86/x64 Windows (from XP to W7) binaries.

https://corkamiwiki.github.io/PE

A VBA parser and emulation engine to analyze malicious macros.

https://github.com/decalage2/ViperMonkey

Automatic exploit generation for simple linux pwn challenges.

https://github.com/xct/ropstar

Automatic Exploit Generation (AEG) and remote flag capture for exploitable CTF problems

https://github.com/ChrisTheCoolHut/Zeratool

FLARE VM - a fully customizable, Windows-based security distribution for malware analysis, incident response, penetration testing, etc.

https://github.com/fireeye/flare-vm

ATT&CK Matrix for Enterprise

https://mitre-attack.github.io/attack-navigator/enterprise/#

“BOLO: Reverse Engineering — Part 1 (Basic Programming Concepts)” by Daniel A. Bloom
https://link.medium.com/ionnGU8g5Z

IP Address Tools Online

https://www.ipvoid.com/

Online x86 / x64 Assembler and Disassembler

This tool takes x86 or x64 assembly instructions and converts them to their binary representation (machine code). It can also go the other way, taking a hexadecimal string of machine code and transforming it into a human-readable representation of the instructions. It uses GCC and objdump behind the scenes.

https://defuse.ca/online-x86-assembler.htm#disassembly