EncryptCTF 2019 Some Challenges Writeups
It’s a WrEP
In this question, sniffed packet of wep network is given and we have to find the key of encryptCTF wifi network. I immediately think that wep is insecure and if we can analyse the sniffed pcap file using aircrack-ng tool(One of the awesome tool for network) then we will get the password of encryptCTF wifi network.
command in my terminal.
It asks for network index from given network in that file. Now index
3 is for encryptCTF wifi.
3 and press enter you see the password(
Wi Will H4CK YOU
This question is similar than It’s a WrEP question but file contain WPA network sniffed packet. Again we have to analyse the give pcap file with aircrack-ng tool but this time we have to use wordlist to bruteforce the password.
command (rockyou.txt is worldlist) in your terminal.
Again asking for network index this time type
1 and it takes some time to bruteforce the password and finally you left with
which is the password.
Into The Black
We have a image file.
It’s a one of the easy question. Simply use
tool to see other plane of given image. In Red plane 1 flag is written.
We have given a image file with jpg extension but when you see the type of file using
file command in linux, you found that given file is a png image.
You change the extension of image but you can’t find anything there.
Challenge name is a hint, reverse the name of challenge. Steganography is a pip. You have to install steganography pip in your machine.
After that simply run