Share how awesome the crack me was or where you struggle to finish it! Stay polite and do not spoil the solution/flag!
11:42 PM 03/12/2020
~CHALLENGES~ EM - Very easy mode: patch executable to make all numbers the special number. NM - Normal mode: step through with GDB and extract Special Number from memory. NM2 - Normal mode 2: Do not look at executable at all. Solve by writing a program to brute force the solution. HM - Hard(er) mode: Do not look at memory or brute force. Solve by reverse engineering the assembly instructions.
tim0tei on 4:50 AM 03/27/2020: EM & NM can be rated as level 1 and feasible for beginners.
Prygoon on 8:26 PM 11/25/2020: Solved this crackme with ghidra. It was not hard but very interesting. I hope my solution will appear soon.
jimsktsmith on 7:37 AM 01/01/2022: Nice crack