Find the flag here:
NzMgNzkgNmUgNzQgN2IgNzAgNjIgNjEgNzQgNjUgNmUgNjcgNjYgNWYgNmMgNjIgNjggNWYgNzQgNjIgNjcgNWYgN2EgNzIgN2Q=
I used CyberChef to decode
- From Base64 to Hex
73 79 6e 74 7b 70 62 61 74 65 6e 67 66 5f 6c 62 68 5f 74 62 67 5f 7a 72 7d - From Hex to Text
synt{pbatengf_lbh_tbg_zr} - ROT 13
flag{congrats_you_got_me}