#kasm #kerbal-space-program #kerbal-operating-system #assembly #ksp #disassembly #krisc #kos #kerbal

bin+lib kdump

A small utility that disassembles and reads KSM and KO files for use with KerbalOS

20 stable releases

2.0.1 Nov 11, 2022
2.0.0 Oct 27, 2022
1.6.11 Dec 5, 2021
1.6.4 Jul 25, 2021
0.1.0 Nov 4, 2020

#166 in Game dev

Download history 27/week @ 2023-11-01 3/week @ 2023-11-08 22/week @ 2023-11-15 21/week @ 2023-11-22 87/week @ 2023-11-29 21/week @ 2023-12-13 21/week @ 2023-12-20 21/week @ 2023-12-27 21/week @ 2024-01-03 1/week @ 2024-01-10 10/week @ 2024-01-17 30/week @ 2024-01-24 21/week @ 2024-01-31 2/week @ 2024-02-07 130/week @ 2024-02-14

193 downloads per month

GPL-3.0 license

1.5K SLoC


github github License

GitHub Workflow Status Libraries.io dependency status for GitHub repo Crates.io Downloads

KDump is a program that allows anyone with a command line to view the contents of KerboScript Machine Code (KSM) files, and KerbalObject (KO) files to view compiled code for Kerbal Operating System. KO and KSM files are fully supported.

KDump is the kOS equivalent to ELF's objdump or readelf programs.



  • Color terminal output
  • Human readable text
  • Debug line number display alongside disassembly


KDump can either be installed via cargo through crates.io, or as a standalone binary.


  • Download the installer .msi file from Releases on the right
  • Run the installer
  • kdump should now be added to your PATH and available from any CMD or Powershell window

Arch Linux

  • Download the PKGBUILD from Releases on the right

  • Copy it to a temporary folder

  • Run makepkg -si to install the kdump and all of its dependencies.

  • kdump should now be added to your PATH and available from any terminal

Standalone Executables

  • Download and extract the .zip file from Releases on the right
  • Place the executable in the desired location
  • Run the executable through the terminal, Powershell on Windows or the default terminal on Mac OS or Linux.


To install using cargo:

cargo install kdump

kdump should then be added to your shell's PATH, and can be run from any terminal


KDump can be invoked after installation as kdump

Help can be accessed from the program itself by running:

kdump --help

KDump takes one .ko or .ksm file as input:

kdump program.ksm

However the default mode is to print nothing. Print options need to be specified.

Most of the time the most useful, even if it takes up the most space is to view the file's full contents. This can be specified by using the -x or --full-contents flags:

kdump program.ksm --full-contents

If only disassembly of function sections is the main concern, then use only the -D or --disassemble flags:

kdump lib.ko -D

When debugging compiled KerboScript files, debug information is stored in KSM files, and KDump is able to read and display this information. Line numbers are displayed to the left of disassembly and can be enabled using the -l or --line-numbers flags:

kdump launch.ksm -Dl

If a file was generated using the Kerbal Linker or similar programs, then there may be information about what tools were used to generate KerbalObject and KSM files, and this can be viewed by passing the -i or --info flags:

kdump script.ksm -i


~46K SLoC