Author:
owo_whats_this

Language:
C/C++

Upload:
11:42 PM 03/12/2020

Platform
Unix/linux etc.

Difficulty:
2.0

Quality:
4.0

Arch:
x86-64

Description

~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.

• Comments
• Solutions

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

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