gnirts mangles string literals more than hexadecimal escape like "\x66\x6f\x6f". String literals that were escaped by the hexadecimal escape can be found out too easily, and those can be decoded too ...
The FLARE Obfuscated String Solver (FLOSS, formerly FireEye Labs Obfuscated String Solver) uses advanced static analysis techniques to automatically extract and deobfuscate all strings from malware ...