encrypted text: 27282a3d2f327c27793d217a3b1679277a162b303d7a3a163d217a162d3c3a3d34
From the challenge description I knew this is single-byte xor. I tried all 256 possibilities and found out that "I" was the xor password
# nactf{5n0th3r_0n3_byt3s_th3_dust}