Tags: xor script
Rating:
<h1 align="center">Script</h1>
<h3>Quick Run 75 points</h3>
You gotta go fast!
Download the files below: quick_run.zip
``` shell
For this challenge, i use python and zbarimg.
```
``` python
import os
import re
flag = []
for i in range(31):
number = os.popen("zbarimg -q "+str(i)+".png").read()
flag.append(''.join(re.findall(r"[-+]?\d+", number)))
print flag
for code in flag:
print "".join(chr(int(code))),
# Flag: LLS{zbarimg_makes_qrcodes_easy}
```
<h3>2xPAD 100 points</h3>
The latest and greatest encryption scheme, “two-time pad” is twice as secure as one time pads. Check it out!
Download the files below: encrypted_one.png and encrypted_two.png
``` shell
For this challenge, i use convert of imagemagick.
convert encrypted_one.png encrypted_two.png -fx "((255-u)&v)|(u&(255-v))" flag_xor.png
Flag: LLS{dont_reuse_your_keys}
```