My First Blog Post

Be yourself; Everyone else is already taken.
— Oscar Wilde.

This is the first post on my new blog. I’m just getting this new blog going, so stay tuned for more. Subscribe below to get notified when I post new updates.

MD5 Decoder

https://www.cmd5.org provides online MD5 / sha1/ mysql / sha256 encryption and decryption services. It has a super huge database with more than 90T data records. Most are free, and a small amount is charged. This site can also decrypt types with salt in real time. This site was created in 2006, please feel free to use it for md5 descrypt and md5 decoder.

md5 decrypt

August 10, 2021 0

picoCTF – you can’t see me – Points: 200

Question

‘…reading transmission… Y.O.U. .C.A.N.’.T. .S.E.E. .M.E. …transmission ended…’ Maybe something lies in /problems/you-can-t-see-me_2_cfb71908d8368e3062423b45959784aa.

Hints

What command can see/read files?

What’s in the manual page of ls?

Solution

I ran command ls but i didn’t see anything so I ran ls -a to show any hidden files and found there was a file called .This was a bit of a problem as Linux treats the. As this character has special meaning when it comes to the linux file systems, when you try to cat it normally, you get the error saying that the period character is a directory .

Therefore you, can try using the cat command by listing all files using the * special character.

Flag

picoCTF{j0hn_c3na_paparapaaaaaaa_paparapaaaaaa_093d6aff}

Time to relax

This is the advertising link.

July 31, 2019 0

picoCTF – what base is this? – Points: 200

Question

To be successful on your mission, you must be able read data represented in different ways, such as hexadecimal or binary. Can you get the flag from this program to prove you are ready? Connect with nc 2018shell.picoctf.com 31711.

Hints

I hear python is a good means (among many) to convert things.

It might help to have multiple windows open

Solution

You must be able to read data presented in different ways. You can use online tools or python to pass this challenge.

Flag

picoCTF{delusions_about_finding_values_68051dea}

July 31, 2019 0

picoCTF – ssh-keyz – Points: 150

Question

As nice as it is to use our webshell, sometimes its helpful to connect directly to our machine. To do so, please add your own public key to ~/.ssh/authorized_keys, using the webshell. The flag is in the ssh banner which will be displayed when you login remotely with ssh to with your username.

Hints

key generation tutorial

We also have an expert demonstrator to help you along.link

Solution

In this challenge, you will login remotely with ssh to with your username.

My name is Gaununu so I use the command: ssh Gaununu@pico-2018-shell

Flag

picoCTF{who_n33ds_p4ssw0rds_38dj21}

July 31, 2019 0

picoCTF – environ – Points: 150

Question

Sometimes you have to configure environment variables before executing a program. Can you find the flag we’ve hidden in an environment variable on the shell server?

Hint

unix env

Solution

Learn about env. You can use env command to show all the environment variables running in the system.

Don’t forget flag’s format: picoCTF{…} and you can use grep command to get the flag.

Flag

picoCTF{eNv1r0nM3nT_v4r14Bl3_fL4g_3758492}

July 31, 2019 0

picoCTF – Aca-Shell-A – Points: 150

Question

It’s never a bad idea to brush up on those linux skills or even learn some new ones before you set off on this adventure! Connect with nc 2018shell.picoctf.com 27833.

Hint

Linux for Beginners

Solution

Follow the instructions using the linux commands you will get the flag!!!

Flag

picoCTF{CrUsHeD_It_17ab99f5}

July 30, 2019 0

picoCTF – grep 2 – Points: 125

Question

This one is a little bit harder. Can you find the flag in /problems/grep-2_0_783d3e2c8ea2ebd3799ca6a5d28fc742/files on the shell server? Remember, grep is your friend.

Hint

grep tutorial

Solution

If you run the ls command, you will see many directories, each containing its own set of folders and files. You can’t enter all those directories and look for flags. So you can grep recursively by using -r to get the flag.

Flag

picoCTF{grep_r_and_you_will_find_24c911ab}

July 30, 2019 0

picoCTF – pipe – Points: 110

Question

During your adventure, you will likely encounter a situation where you need to process data that you receive over the network rather than through a file. Can you find a way to save the output from this program and search for the flag? Connect with 2018shell.picoctf.com 44310.

Hints

Remember the flag format is picoCTF{XXXX}

Ever heard of a pipe? No not that kind of pipe… This kind

Solution

Learn about pipe

The pipe or the | passes standard output into standard input.

You can connect the server and use grep find the flag in this file

Flag

picoCTF{almost_like_mario_a13e5b27}

July 30, 2019 0

picoCTF – strings – Points: 100

Question

Can you find the flag in this file without actually running it? You can also find the file in /problems/strings_4_40d221755b4a0b134c2a7a2e825ef95f on the shell server.