攻防世界MISC_low

环境

题目下载，bmp隐写lsb

flag{139711e8e9ed545e}

wp

首先得到一张bmp，用画图工具打开，另存为png，在使用stegsolve打开即可得到二维码

python

拿到图片里面的二维码代码如下

from PIL import Image
img = Image.open('./low.bmp')
img_tmp = img.copy()
pix = img_tmp.load()
width, height = img_tmp.size
for w in range(width):
    for h in range(height):
        if pix[w, h] & 1 == 0:
            pix[w,h] = 0
        else:
            pix[w, h] = 255
img_tmp.show()