Nim

• https://github.com/byt3bl33d3r/OffensiveNim

• https://s3cur3th1ssh1t.github.io/Playing-with-OffensiveNim/

• https://github.com/S3cur3Th1sSh1t/Creds/tree/master/nim

• https://github.com/ajpc500/NimExamples

• https://huskyhacks.dev/2021/07/17/nim-exploit-dev/

• https://casvancooten.com/posts/2021/08/building-a-c2-implant-in-nim-considerations-and-lessons-learned/

Install

Windows:

• https://nim-lang.org/install_windows.html

• https://git-scm.com/download/win

Linux:

$ sudo apt install mingw-w64 -y
$ sudo apt install nim -y
Or
$ curl https://nim-lang.org/choosenim/init.sh -sSf | sh

Dependencies:

Nim > nimble install winim nimcrypto zippy

Compilation

Basic:

Nim > nim c program.nim

To not popup the console window:

Nim > nim c --app:gui program.nim

For the best size:

Nim > nim c -d:danger -d:strip --opt:size --passC=-flto --passL=-flto program.nim

For Windows on Linux:

$ nim c --cpu:amd64 --os:windows --gcc.exe:x86_64-w64-mingw32-gcc --gcc.linkerexe:x86_64-w64-mingw32-gcc program.nim

Add the needed relocation section to the resulting executable (from Windows):

Nim > nim c --passL:-Wl,--dynamicbase,--export-all-symbols program.nim

Tools & Packers

• https://github.com/S3cur3Th1sSh1t/Nim-RunPE

• https://github.com/S3cur3Th1sSh1t/NimGetSyscallStub

• https://github.com/chvancooten/NimPackt-v1

• https://github.com/icyguider/Nimcrypt2

• https://github.com/adamsvoboda/nim-loader