In this challenge, we’re given a file named chall. To open it, you’ll need the Ghidra application (or something similar like Binary Ninja). Then, find the Symbol Tree section on the left and expand the export section. You’ll find the A_VALS, B_VALS, N_VALS, and CORRECT_HASHES sections. Then, hover your cursor over the hexadecimal section.
As you can see in the following image, there’s a collection of characters. However, A_VALS, B_VALS, and CORRECT_HASHES require 8 characters, while N_VALS only requires 4. So, I divided the hexadecimal value according to the number of characters needed, resulting in 7 hexadecimal parts.
After that, I entered the resulting hexadecimal value into the following solver:
Finally, the flag was obtained.
Flag
SPARTA{y0u_r3v3r53d_my_L1n34r_C0ngRU3nt1Al_g3ner4t0r}