picoCTF 2022 | Redaction gone wrong Write-up

Challenge description

Now you DON’T see me. This report has some critical data in it, some of which have been redacted correctly, while some were not. Can you find an important key that was not redacted properly?

Category: Forensics


The provided file is a .pdf, let’s take a look.

Some texts are blacked out

Even though they appear to be black bars, the texts underneath are still there. You simply have to copy and paste them out somewhere else to see them as normal:

And the flag is ours

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: