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FreeIntermediateAdvancedAbandoned

Specifications

Specifications
FormatChallenges
LevelIntermediate, Advanced
PriceFree
AccessNo registration
ActivityAbandoned
LanguageEN
CategoryReverse

Crackme-style reversing tasks across Windows, Linux, .Net, Flash, Java, Python and mobile. The format is close to a crackme: a binary, a check, and an algorithm to recover. It assumes you can already read a disassembler. No challenge counter is published.

Pros & cons

Pros

  • Several platforms in one place, including .Net, Java and Python
  • A difficulty arc from simple password checks to whole algorithms
  • Readable and reachable without an account

Cons

  • The last news item is dated 12 December 2014, so nothing new is coming
  • Some challenges target outdated technology such as Flash and will not run easily
  • Abandoned, not merely quiet: no maintenance means broken links stay broken

Who it fits

Suits someone who already reads disassembly and wants range across platforms rather than new subject matter. Plan it as something to work through: no new challenges are being written.

Getting started

  1. Start with the Windows x86 set: it is the largest and loads most reliably
  2. Run each challenge and watch its behaviour before opening a disassembler
  3. Keep a solved list: it shows which platforms you have not touched at all

History

The site has been up since 2012 and its last news item is dated 12 December 2014, which is why the activity is marked abandoned rather than slow. The challenges that still load remain usable, but some depend on runtimes nobody installs any more. Checked.