crackmes.one

coque's ChronosKeygenme (brainfuck)

Author:
coque

Language:
C/C++

Upload:
2026-10-20 03:47

Platform:
Windows

Difficulty:
6.0

Quality:
4.0

Arch:
x86-64

Downloads:
28

Size:
2.41 MB

Writeups:
0

Comments:
8

Description

Difficulty: Extreme Implemented Protections: * White-box cryptography and multi-dimensional dynamic T-Boxes. * Control Flow Flattening and opaque predicates. * Self-modifying code (SMC) and Vectored Exception Handlers (VEH). * Advanced debugger detection (PEB, hardware debug registers Dr0-Dr7, TLS callbacks, kernel checks, and the Watchdog guardian thread). Objective: * Rule: Do not patch the binary in memory or on disk. * Mission: Analyze the control flow and cryptography to code a Keygen or document the process.

Labels ?

Anti-debugging Debugger/tool window detection Timing (rdtsc/GetTickCount) PEB BeingDebugged / NtGlobalFlag Exception-based (SEH/VEH/INT2D) Hardware breakpoints (DRx) NtQueryInformationProcess CheckRemoteDebuggerPresent TLS callback String / data encryption XOR Self-modifying / runtime decrypt Code virtualization / VM Control-flow obfuscation State machine / dispatcher Control-flow flattening (CFF) Anti-disassembly Junk / garbage bytes Import / API obfuscation