Quick and Dirty JPG LSB Steganography

Using the Least Significant Bit of a .jpg, we can manipulate the data to incorporate our own binary message.

Programs:
• HxD
• MS Paint

(1) .jpg HEX Header value starts with FFD8FF

(2) .jpg HEX Footer value ends with FFD9

(Optional) Using MS paint I used a black bar to create a reference point to “encode” my message.

(3) Opening up the .jpg with the edited black bar, we can easily pinpoint the “area” in HxD.

(4) We then manipulate the LEAST SIGNIFICANT BIT as, no pun intended, will cause the the LEAST manipulation to the image.

*The example used does show heavy manipulation, which is intened.