add blogpost and cdn chall

services/blogpost/README.md

@@ -0,0 +1,15 @@
+## Blogpost
+
+db used: sqlite
+flag.txt: GEMASTIK{random sha256 generated on app start}
+
+feature:
+[authentication required with login and register, register default as "user" role]
+1. search feature
+2. create, edit, visit post form that can upload images (png, jpg/jpeg, bmp) query the image metadata taken with exiftool to the sqlite database
+3. profile (if the account type is admin, render the content of flag.txt)
+
+vuln1: Command injection on exiftool (payload: exp1.py)
+vuln2: SQLi on image metadata to enable altering user account into admin account (payload: sqli.png, exp2.py)
+
+patching rules?: