crackmes.one

owo_whats_this's Very Special Number v1

Author:
owo_whats_this

Language:
C/C++

Upload:
2020-03-12 23:42

Platform:
Unix/linux etc.

Difficulty:
2.0

Quality:
4.0

Arch:
x86-64

Downloads:
26

Size:
17.28 KB

Writeups:
2

Comments:
4

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.