Official racecar Discussion

HTB Content Challenges
22

It was provided to you already. Slow down and go back to the very beginning where you downloaded the zip file and read the instructions carefully.

23

i have no idea what the docker host thing is for, can anybody tell me.

25

Hi!
I’m very new in this topic. I found the vuln in the bin but the question is how do I run the program in the server instance?
Thank you in advance!

26

I started the instance and got the host IP and port and copied it to a web browser but it says: This page isn’t working

178.62.7.66 sent an invalid response.

ERR_INVALID_HTTP_RESPONSE

Where do I go from here?

27

Continuing the discussion from Official racecar Discussion:

same for me Remote host HTTP protocol error, do u find a solution?
racecar file give me an error on Mac and linux
bash: ./racecar: No such file or directory

28

Try any of these (remember the space b/n host and port) -

  • nc host port
  • netcat host port
29

For any other beginners that are getting stuck on the can’t open flag or ./racecar: No such file or directory. Make sure you have downloaded the appropriate tools and packages. Good Luck!

30

A note for anyone on a Mac with Apple Silicone (M1/2/3), the binary is compiled for intel chips so it will not run on Apple silicon/ARM systems.

31

Cool challenge long time no see this bug in challenge, anyone need dm me ^^

32

For Beginners like myself, if you get an Error stating [-] Could not open flag.txt. Please contact the creator create a new text file in the same dir named ‘flag.txt’ and if you’re in Ghidra and or Cutter set mode to read-only :slight_smile:

33

Solved the racecar challenge, It was a bit difficult for me as I am new to security. I had to take help of walkthrough. But got the flag…Hurray!!!

34

Hi,
i have never done a reverse engineering challenge or anything similar.
I think I start to understand what the program does, but have no clue how to manipulate its behavior based on user input.

Can you recommend what topics to read/learn about in order to crack this challenge?
Are there any modules on the academy that relate to this?

Thank you!

35

Mine seems to be giving me garbage output in WSL2. I double checked people’s solutions online and we’re doing the same thing, except my flag’s value is actually just broken ascii characters. Anyone seen this before?