Mic Check One

Platform: rev-kids20.forkbomb.ru | Category: Reversing | Type: Challenge | Difficulty: Trivial | OS: NA | Author: XESXOR | Date: 2026-03-09 | Status: Solved Techniques: source_code_analysis, string_comparison

Summary

Language: C. Source code provided. Simple flag checker binary.

Mic Check One — Reverse Kids 2.0

Description

Language: C. Source code provided. Simple flag checker binary.

Analysis

The source code contains a direct comparison of the input string with a hardcoded flag:

 c read-only • copy allowed Copy
if (strcmp(input, "REDACTED") == 0) {
    printf("Yes! Correct flag is %s\n", input);
}

Solution

The flag is visible directly in the source code — it's the argument to strcmp. ‍​‌‌​​‌​​​‌‌​​‌​​​​‌‌​‌​​​​‌‌‌​​‌​​‌‌​​​‌​​‌‌‌​​​​​‌‌​‌‌​​​‌‌​​​​‍