Powershell 代码解密挑战：解开隐藏的 Flag

$flag = 'flag{P0w3r5h3ll_1s_4w3s0m3}'

.('{1}{0}' -f 't','Se') ('ye4x2' + 'v') ([tYpE]('{0}{1}{3}{2}' -F'SYStem','.','T','COnVEr')); .('{1}{0}{2}' -f 'T','se','-itEm') ('{2}{0}{3}{4}{1}' -f 'I','Q','VAR','aBLE:','9cg8m') ([tYPe]('{3}{0}{2}{1}' -F'sTEM.','COdinG','teXT.eN','SY')); ${bBbBB} = $Ye4x2V::('{3}{4}{1}{2}{0}' -f 'ng','Base6','4Stri','Fr','om').Invoke('{16}{7}{15}{2}{14}{10}{12}{0}{4}{1}{6}{3}{13}{8}{17}{18}{9}{5}{11}' -f'yF','XOhd','chd2F3','dlF','3oXeBdhF3I','XYx','HF0QXVR','QF3IXYxc6F0cXRBdV','F2cXe','k','Zxd4F34XeRdjF2','c+FywX','sXRRd','3IXdhd8','wX','F2UX','Pxd','Bd+F','3'); for (${IiIii} = 0; ${IiiIi} -lt ${BbBBB}.COUNT; ${IIIii}++) { ${BbBbB}[${iIiIi}] = ${BbBbB}[${iIiIi}] -bxor 23; &('{1}{0}' -f'EX','I') ((&('{1}{0}' -f'r','DI') ('{3}{2}{1}{0}' -f 'mQ','ble:9cG8','aRIa','v')).vAluE::UNiCOdE.GEtstriNG(${B`BBBB}));