CTF音频杂项出题脚本

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

import wave

zerofile = "ha-d4.wav"
onefile = "ha-gs4.wav"
outfile = "flag.wav"
flag=b"flag{5BChiLd_I5_re411Y_cUTE}"
bits = list(map(int, ''.join(['{0:08b}'.format(i) for i in flag])))

def getframe(file):
    w = wave.open(file, 'rb')
    frame=w.readframes(w.getnframes())
    w.close()
    return frame
    
zeroframe=getframe(zerofile)
oneframe=getframe(onefile)


output = wave.open(outfile, 'wb')

w = wave.open(zerofile, 'rb')
output.setparams(w.getparams())
w.close()

for bit in bits:
    if bit == 0:
        output.writeframes(zeroframe)
    if bit == 1:
        output.writeframes(oneframe)
output.close()