https://binreaper.pages.dev/tags/openwrt/ Recent content in Openwrt on binreaper Hugo en-us Wed, 04 Mar 2026 00:00:00 +0000 https://binreaper.pages.dev/posts/2026-03-04-musl-des-crypt-salt/ Wed, 04 Mar 2026 00:00:00 +0000 https://binreaper.pages.dev/posts/2026-03-04-musl-des-crypt-salt/ <p>When extracting <code>/etc/shadow</code> from embedded Linux devices — routers, IoT gateways, cameras — you&rsquo;ll occasionally encounter password hashes that every standard cracking tool refuses to touch. Not because the hash is strong, but because the C library that generated it plays by slightly different rules.</p> <p>This post documents a specific case: DES crypt hashes with a <code>$</code> character in the salt, generated by musl libc on an OpenWrt-based router. The fix is a one-character substitution that makes the hash crackable in seconds.</p>