challenges.re
Solve reverse engineering challenges published on challenges.re, a challenge-focused site.
About challenges.re
challenges.re is a reverse-engineering exercise site contrived by Dennis Yurichev, inspired by Project Euler and the Matasano crypto challenges and linked to Reverse Engineering for Beginners material. It offers numbered challenges, exercises, problems and tasks for practicing reading assembly listings and analyzing executable files. It suits people starting to learn reverse engineering. Level distinctions are blurred and not strict.
Pricing is not clearly stated.
Key features
- One-sentence description tasks for assembly functions
- Rewrite assembly functions into C/C++
- Executable files for hands-on analysis
- Browse by level, type, architecture and OS
- Covers X86, X64, MIPS, ARM and ARM64
- Includes CLR (.NET) and JVM examples
- Covers stack, arrays, bit fields and structures
- Includes obfuscation and copy-protection examples
Best for: People learning reverse engineering
challenges.re at a glance
- Website
- challenges.re
- Category
- Privacy & Security › Security Tools
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Details verified
- Oct 21, 2026 · Official source
- Open source
- Not stated
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Guides for Security Tools
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