Mic Check One

Platform: CUSTOM | Category: Reversing | Type: Challenge | Difficulty: Trivial | OS: N/A | **Author: XESXOR Techniques: source_code_analysis, string_comparison

Summary

Walkthrough of the CUSTOM Reversing Mic Check One. Language: C. Source code provided. Simple flag checker binary.

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. ‍​‌‌​​‌​​​‌‌​​‌​​​​‌‌​‌​​​​‌‌‌​​‌​​‌‌​​​‌​​‌‌‌​​​​​‌‌​‌‌​​​‌‌​​​​‍

Key Takeaways / Lessons

• Mastering source_code_analysis, string_comparison was key to this challenge.
• Always check for common misconfigurations and verify assumptions.

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Crafted by XESXOR Research • 2026-03-09 • CUSTOM • Mic Check One • Difficulty: Trivial