Rows:
| CHALLENGE | AUTHORS | SOLVES (CURRENT) | SOLVE RATE (AT CONTEST TIME) |
|---|---|---|---|
1734 solves | - | ||
1561 solves | - | ||
920 solves | - | ||
621 solves | Top 28% = 84/300 users | ||
616 solves | - | ||
599 solves | - | ||
536 solves | Top 73% = 683/928 teams | ||
407 solves | - | ||
400 solves | - | ||
369 solves | - | ||
365 solves | - | ||
361 solves | Top 32% = 56/174 users | ||
348 solves | - | ||
339 solves | - | ||
335 solves | - | ||
328 solves | - | ||
327 solves | - | ||
321 solves | - | ||
317 solves | - | ||
303 solves | - |
Rows:
Daily AlpacaHackTopic: ELFReleased: Dec 12, 2025
すごい暗号を使ったすごいフラグチェッカー
chal は ELF 実行ファイルです。まずは、IDA Free, Ghidra, Binary Ninja などのリバースエンジニアリングツールでデコンパイルしてみましょう。strcmp 関数でどんな文字列を比較しているかに着目してみてください。