https://th3b0ywh0l1v3d.github.io/tags/base64/ Recent content in Base64 on Th3B0yWh0L1v3d — Security Writeups Hugo en-us Tue, 16 Jun 2026 00:00:00 +0000 https://th3b0ywh0l1v3d.github.io/ctf/boroctf-2026/crypto/a-basic-start/ Tue, 16 Jun 2026 00:00:00 +0000 https://th3b0ywh0l1v3d.github.io/ctf/boroctf-2026/crypto/a-basic-start/ Decoding a multi-layer encoding chain: Base64 followed by Base91. https://th3b0ywh0l1v3d.github.io/ctf/boroctf-2026/reversing/perfectly-destructive-file/ Tue, 16 Jun 2026 00:00:00 +0000 https://th3b0ywh0l1v3d.github.io/ctf/boroctf-2026/reversing/perfectly-destructive-file/ Extracting a flag hidden inside a PDF stream using FlateDecode and base64. https://th3b0ywh0l1v3d.github.io/ctf/dalctf-2026/forensics/warmerer-up/ Sat, 06 Jun 2026 00:00:00 +0000 https://th3b0ywh0l1v3d.github.io/ctf/dalctf-2026/forensics/warmerer-up/ A 4.9 MB rules PDF hides 360 fake 1×1 image XObjects holding base64 chunks that reassemble into an encrypted ZIP; the password is hidden in the rules text, inside is a Singularity .sif whose squashfs holds the flag.