Tuesday, June 11, 2019

[Project] 1 - Bluestego

The LSB is old technique but still a most common in the CTF and special is in steganography. What is LSB? The least significant bits have the useful property of changing rapidly if the number changes even slightly. For example, if 1 (binary 00000001) is added to 3 (binary 00000011), the result will...

Saturday, June 8, 2019

[Writeup] HSCTF 2019

FORENSICS Chicken Crossing Use strings and grep command in linux I have a flag. Flag: hsctf{2_get_2_the_other_side} Cool Image The author give us a file with extension is .pdf, but I can open it, check back the header I realize it is the .png file so I just change the extension and get...