File: README (Probably text)
File: challenge.txt (ASCII or Unicode plain text file)
File: foo (ASCII or Unicode plain text file)
File: foo1 (ASCII or Unicode plain text file)
File: foo2 (ASCII or Unicode plain text file)
File: log (ASCII or Unicode plain text file)
File: mail-thug (ASCII or Unicode plain text file)
File: senders (ASCII or Unicode plain text file)
File: success.txt (ASCII or Unicode plain text file)