crackmes.one

tragedia's eazy crack

Author:
tragedia

Language:
C/C++

Upload:
2026-11-06 22:06

Platform:
Windows

Difficulty:
2.0

Quality:
4.0

Arch:
x86-64

Downloads:
166

Size:
63.53 KB

Writeups:
0

Comments:
1

Description

eazy crack An original offline educational crackme for Windows x64. GOAL Analyze the key verification and demonstrate a reproducible bypass. Recovering the original accepted key is an optional additional goal. Merely launching the presentation code directly is not a solution. INPUT Enter one case-sensitive key at the "Enter key>" prompt. After successful verification, an optional operator name is requested. This name is used only for the presentation and does not affect the accepted key. This is not a keygenme. OUTPUT An incorrect key prints: "Invalid key or damaged payload." The correct key starts a success presentation with a thank-you message. Press Enter to exit. IMPLEMENTATION Native C executable using Windows CNG for AES-GCM and PBKDF2-HMAC-SHA256 with 520,000 iterations. The program checks its executable file integrity at startup. It also checks for an attached debugger and selected analysis-tool process names. If a debugger or blocked tool is detected at startup, a Windows error dialog is displayed. If detected while the program is running, the program terminates itself without a dialog. No network access. No commercial packer or protector. No Python installation or additional application resources required. Suggested approach: Locate the verification routine and analyze the control flow, cryptographic API calls, and integrity check. Tested on Windows x64 with valid and invalid input.

Labels ?

Anti-debugging IsDebuggerPresent CheckRemoteDebuggerPresent String / data encryption AES (encryption) Crypto / hash algorithm AES (crypto) SHA-256