This is the latest version of 'abootimg' from https://gitorious.org/ac100/abootimg.git (as of Jul-11-2017 last commit was on Sep-11-2012), updated to be able to extract the included DT image as found on Samsung S5 or S7.
Note, that created boot images still don't include the DT.
Version set to 0.7cpg.
See original README for more details about the program.