I am currently trying to reverse-engineer the firmware of an E-Cigarette but I cannot find any clues with the common tools. Heres everything I found so far.
Binwalk doesnt recognize anything even with
Entropy = 7.611435 bits per byte.
Optimum compression would reduce the size of this 80896 byte file by 4 percent.
Chi square distribution for 80896 samples is 99630.01, and randomly would exceed this value less than 0.01 percent of the times.
Arithmetic mean value of data bytes is 117.2996 (127.5 = random).
Monte Carlo value for Pi is 3.078178312 (error 2.02 percent).
Serial correlation coefficient is 0.107920 (totally uncorrelated = 0.0).
Is it possible that this file is encrypted or compressed?
Here is a visualization of the entropy:
Here is a download of the Firmware. https://www.file-upload.net/download-13422170/HW718V40_20171008.firmware.html