Lost in Parity

Lost in Parity I deleted the flag. python3 xor.py ./f* > xor rm xor.py flag.txt Author: @miko Category: misc Solver: frcroth, mp455 Flag: ENO{R41D1NG_F1L3S_4R3_W3?} The challenge gives us a bunch of files - 255 files and the xor-file. A quick random sample of wc -c suggests that all files including the xor-file have the same size: 26 bytes. The challenge description hints that the xor-file might be the result of applying the xor-operation to the 255 files and the flag....

March 21, 2024 · 2 min · frcroth, mp455

Itchy Route

Itchy Route Get straight to the point and list your options! Category: misc Solver: frcroth, mp455 Flag: ENO{4NY_M0R3_QU35T10N5M4RK5_0C?N?} When connecting to this challenge, nothing greets us and if we are polite and ask “hello”, it responds with: Request contained some illegal characters: “hello” Also, when we take too long, we get different errors, e.g.: Request timeout: firewall getting suspicious. This already tells us that we probably need to use a script to interact here, since we won’t be able to type quickly enough....

March 20, 2024 · 3 min · frcroth, mp455

missingcat

missingcat Where is my cat? 😿 Category: misc Solver: frcroth, mp455 Flag: ENO{0xCAT_BUT_H4PP1_THANK_Y0U!} We were given the following script: import subprocess cmd = input("Give me your command: ") if len(cmd) > 2: print("Command is too long!") try: cmdstring = [cmd, "flag.txt"] print(f"Executed command: {cmdstring}") result = subprocess.check_output(cmdstring, timeout=1) except: result = b"No 😿" print(result.decode()) So we need to find a command that gives us the flag and whose name is only 2 letters long....

March 20, 2024 · 2 min · frcroth, mp455

Timecode

Timecode Times change you, and numbers. Category: misc Solver: frcroth, mp455 Flag: ENO{S0M3_J4V4_1NT3G3R5_4R3_C4CH3D} When we connect to the host, we get a challenge: Registered as user b6ee888b-6f24-4049-b0e2-ee227233973f New Challenge (2024-03-20T19:57:49.535Z) 69 51 97 43 01 65 After trying out some values, sending the same numbers gives a cryptic response: 69 51 97 43 01 65 ‘85’ is not equal to ‘69’ ‘66’ is not equal to ‘51’ ‘79’ is not equal to ‘97’ ‘86’ is not equal to ‘43’ ‘127’ is not equal to ‘01’ ‘95’ is not equal to ‘65’ Challenge failed....

March 20, 2024 · 4 min · frcroth, mp455

Insane Bolt

his insane scientist wants to craft the most powerful android in the world! Help him collect many 🔩 to achieve his goal. Also, he needs many 💎 to make it even more strong and pwoerful than any other android. Good luck adventurer! Category: misc Solver: 3mb0, nh1729 Flag: HTB{w1th_4ll_th353_b0lt5_4nd_g3m5_1ll_cr4ft_th3_b35t_t00ls} Writeup When connecting to the port and ip with netcat, we get a menu: 1. Instructions 2. Play > If we enter 1, we get the rules of the game:...

December 2, 2021 · 6 min · 3mb0, nh1729

Sigma Technology

On a path to avenging his father, Tex Chance manufactured steam-powered robots to capture all the animals of your island to build a powerful army of fused mutated organisms using his powerful Sigma technology. You can’t let them take away your loyal doggo Julius. The robots have been trained to classify all the objects they encounter using the SigmaNet network. Can you use your laser pointer to change some of the robot’s vision pixels forcing it to misclassify your dog’s image as a non-animal object?...

December 2, 2021 · 4 min · 3mb0, nh1729

Tree of danger

As you approach SafetyCorp’s headquarters, you come across an enormous cogwork tree, and as you watch, a mechanical snake slithers out of a valve, inspecting you carefully. Can you build a disguise, and slip past it? Category: misc Solver: 3mb0, lmarschk Flag: HTB{45ts_4r3_pr3tty_c00l!} Writeup For this challenge, we can download the python code (python 3.10 to be able to use the new match-case statement) for a server that offers python remote code execution via eval....

December 2, 2021 · 3 min · 3mb0, lmarschk

mathemoji

Time for an emoji-test! No need to worry.. You have 500 seconds to answer 100 questions. Five seconds for each question is more than enough! You need to score 100/100 in order to win an amazing prize! Good luck! Category: misc Solver: lmarschk Flag: HTB{3m0j1s_R_fUn_4nd_m4k3_m3_c0d3_f4st} Writeup Starting with a telnet connection to the server, we are given a set of questions: Trying 139.59.202.58... Connected to docker.hackthebox.eu. Escape character is '^]'....

March 24, 2021 · 6 min · lmarschk

Arcade

If you are not strong enough to beat the boss, you need to find another way to win the game! Category: Misc Solver: t0b1 Writeup In this challenge we get a binary. As the description says, we need to find another way to win the game!. Running the binary shows that its a little game. At first we can choose between two game modes. Obviously the Izi! mode is not available ;)....

7 min · t0b1

HTBxUni AI

We added a new AI to our server (discord.gg/hackthebox) called “HTB × Uni AI”, in order to help our members with data analysis. However, the bot has now gone rogue and is trying to deactivate the server itself, as it perceives it as a threat. We can’t get in contact with the server administrator and the bot has disabled interactions with it, can you help us deactivate the AI bot and save the server by using the !...

2 min · t0b1

Rigged Lottery

Is everything in life completely random? Are we unable to change our fate? Or maybe we can change the future and even manipulate randomness?! Is luck even a thing? Try your “luck”! Category: Misc Solvers: t0b1, lmarschk Writeup In this challenge we get a binary and can spawn a docker container. Downloading and running the binary yields the following output. 💎 Cosy Casino 💎 Current cosy coins: 69.69 1. Generate lucky number....

4 min · t0b1, lmarschk