This one is relatively easy. One of the reasons may be there is not much scripting needed.
The riddle designer gave a hint from the forum saying “Look at the password box hint”. When clicking the insect, the dialog shows a hint saying “inflate”. Someone from the forum also said the sound made by the insect. So it’s got to be bz2 and decompress.
>>> import bz2 >>> un = 'BZh91AY&SYA\xaf\x82\r\x00\x00\x01\x01\x80\x02\xc0\x02\x00\x00!\x9ah3M\x07<]\xc9\x14\xe1BA\x06\xbe\x084' >>> pw = 'BZh91AY&SY\x94$|\x0e\x00\x00\x00\x81\x00\x03$ \x00!\x9ah3M\x13<]\xc9\x14\xe1BBP\x91\xf08' >>> print bz2.decompress(un) huge >>> print bz2.decompress(pw) file