[Jarvis OJ]-Basic

Https://www.jarvisoj.com/challenges Basic

-.-string

Please observe the following ciphertext and convert it into flag form.

.. -. . .. -. -. -. -. -. . . -. -. -. . -. . -. .. -. . -. -. -. -. -. . -. -.

Flag is 32-bit uppercase md5

Steps:

A good assistant for decryption: http://tool.ph0en1x.com/hashtool/tools.html#conv/FLAG522018D665387D1DA931812B77763410A Piece Of Cake

Give a passage: too long to want to cp, into the https://quipqiup.com/ word frequency analysis, lack of b, add b to have a look

Cheap hands

One day, A Jun's website was changed and the administrator's password was changed. I couldn't log on alive or dead. I went to the database to have a look. What, isn't this password md5 the same as before? Why can't you get on it?

D78b6f302l25cdc811adfe8d4e7c9fd34

Please submit PCTF {original administrator password}

Steps:

Just dump cmd5 without this md5 33rd? hexadecimal? One more person? 2l2 . . This is I (uppercase I) d78b6f30225cdc811adfe8d4e7c9fd34 dumped cmd5 to solve the hack joke.

Please submit the hexadecimal code of the "Kun jin copy". (upper case)

Character to hexadecimal

S1 copy'. Decode ('utf-8'). Encode (' gbk'). Encode ('hex')

Forensics

There is a forensics artifact, as shown in the following figure, which can analyze the TureCrypt key from the memory dump.

Steps:

Baidu memory Forensics https://www.freebuf.com/column/152545.html

Secret

The legendary signing-in question

Topic entry: http://web.jarvisoj.com:32776/

Hint1: submission format PCTF {Secrets you discover}

Steps:

Open the page to display Can you find the Secret? Look at the element and find Secret in the response header. Veryeasy

Use basic commands to get flag

1. I don't seem to have used basic orders.. Open it with Winhex, pull it to 0x1000, and get flag2. Use the basic command: strings'/ root/Desktop/veryeasy' magic face = _ =

About USS Lab. Baidu Google's full name is base64?base32 decode- > hex

After I finished it, I found the boss.

Https://bestwing.me/2016/05/26/2016-PCTF-Writup/