diff --git a/content/writeups/adventofctf/2020/challenge_0.md b/content/writeups/adventofctf/2020/challenge_0.md
index 2d7355f..633abeb 100644
--- a/content/writeups/adventofctf/2020/challenge_0.md
+++ b/content/writeups/adventofctf/2020/challenge_0.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 0"
+title = "Teaser"
 subtitle = "Challenge 0 - AdventOfCTF"
 date = 2020-12-02T17:20:28+01:00
 description = "A writeup for challenge 0 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_1.md b/content/writeups/adventofctf/2020/challenge_1.md
index 511b676..25c2db9 100644
--- a/content/writeups/adventofctf/2020/challenge_1.md
+++ b/content/writeups/adventofctf/2020/challenge_1.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 1"
+title = "The Source"
 subtitle = "Challenge 1 - AdventOfCTF"
 date = 2020-12-02T17:27:25+01:00
 description = "A writeup for challenge 1 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_10.md b/content/writeups/adventofctf/2020/challenge_10.md
index 8e2ae96..4d307d9 100644
--- a/content/writeups/adventofctf/2020/challenge_10.md
+++ b/content/writeups/adventofctf/2020/challenge_10.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 10"
+title = "Include"
 subtitle = "Challenge 10 - AdventOfCTF"
 date = 2020-12-11T22:12:42+01:00
 description = "A writeup for challenge 10 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_11.md b/content/writeups/adventofctf/2020/challenge_11.md
index 7798a7f..8a5846b 100644
--- a/content/writeups/adventofctf/2020/challenge_11.md
+++ b/content/writeups/adventofctf/2020/challenge_11.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 11"
+title = "Filter"
 subtitle = "Challenge 11 - AdventOfCTF"
 date = 2020-12-11T23:45:32+01:00
 description = "A writeup for challenge 11 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_12.md b/content/writeups/adventofctf/2020/challenge_12.md
index 783bca0..9053bf1 100644
--- a/content/writeups/adventofctf/2020/challenge_12.md
+++ b/content/writeups/adventofctf/2020/challenge_12.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 12"
+title = "Command"
 subtitle = "Challenge 12 - AdventOfCTF"
 date = 2020-12-14T15:55:21+01:00
 description = "A writeup for challenge 12 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_13.md b/content/writeups/adventofctf/2020/challenge_13.md
index 7cb6101..b9e6f3a 100644
--- a/content/writeups/adventofctf/2020/challenge_13.md
+++ b/content/writeups/adventofctf/2020/challenge_13.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 13"
+title = "XML"
 subtitle = "Challenge 13 - AdventOfCTF"
 date = 2020-12-14T18:48:28+01:00
 description = "A writeup for challenge 13 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_14.md b/content/writeups/adventofctf/2020/challenge_14.md
index 9389a65..31ae945 100644
--- a/content/writeups/adventofctf/2020/challenge_14.md
+++ b/content/writeups/adventofctf/2020/challenge_14.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 14"
+title = "Juggler"
 subtitle = "Challenge 14 - AdventOfCTF"
 date = 2020-12-14T19:45:51+01:00
 description = "A writeup for challenge 14 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_15.md b/content/writeups/adventofctf/2020/challenge_15.md
index f51a571..27b2cf3 100644
--- a/content/writeups/adventofctf/2020/challenge_15.md
+++ b/content/writeups/adventofctf/2020/challenge_15.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 15"
+title = "Juggler++"
 subtitle = "Challenge 15 - AdventOfCTF"
 date = 2020-12-31T22:34:24+01:00
 description = "A writeup for challenge 15 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_16.md b/content/writeups/adventofctf/2020/challenge_16.md
index 0c3ce22..7bd48bd 100644
--- a/content/writeups/adventofctf/2020/challenge_16.md
+++ b/content/writeups/adventofctf/2020/challenge_16.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 16"
+title = "Encoded"
 subtitle = "Challenge 16 - AdventOfCTF"
 date = 2021-01-01T01:44:45+01:00
 description = "A writeup for challenge 16 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_17.md b/content/writeups/adventofctf/2020/challenge_17.md
index 2a2ddc1..d55f5f2 100644
--- a/content/writeups/adventofctf/2020/challenge_17.md
+++ b/content/writeups/adventofctf/2020/challenge_17.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 17"
+title = "Gatekeeper"
 subtitle = "Challenge 17 - AdventOfCTF"
 date = 2021-01-06T22:51:23+01:00
 description = "A writeup for challenge 17 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_18.md b/content/writeups/adventofctf/2020/challenge_18.md
index a6b7fdb..a66799f 100644
--- a/content/writeups/adventofctf/2020/challenge_18.md
+++ b/content/writeups/adventofctf/2020/challenge_18.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 18"
+title = "Evaluations"
 subtitle = "Challenge 18 - AdventOfCTF"
 date = 2021-01-06T23:04:52+01:00
 description = "A writeup for challenge 18 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_19.md b/content/writeups/adventofctf/2020/challenge_19.md
index a7a70c1..6d5f73c 100644
--- a/content/writeups/adventofctf/2020/challenge_19.md
+++ b/content/writeups/adventofctf/2020/challenge_19.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 19"
+title = "Safe?"
 subtitle = "Challenge 19 - AdventOfCTF"
 date = 2021-02-25T23:18:28+01:00
 description = "A writeup for challenge 19 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_2.md b/content/writeups/adventofctf/2020/challenge_2.md
index 8ee6c14..4e94b57 100644
--- a/content/writeups/adventofctf/2020/challenge_2.md
+++ b/content/writeups/adventofctf/2020/challenge_2.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 2"
+title = "Cookiemonster"
 subtitle = "Challenge 2 - AdventOfCTF"
 date = 2020-12-02T17:30:25+01:00
 description = "A writeup for challenge 2 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_20.md b/content/writeups/adventofctf/2020/challenge_20.md
index b7d9232..7ae971d 100644
--- a/content/writeups/adventofctf/2020/challenge_20.md
+++ b/content/writeups/adventofctf/2020/challenge_20.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 20"
+title = "The Game"
 subtitle = "Challenge 20 - AdventOfCTF"
 date = 2021-02-26T00:11:35+01:00
 description = "A writeup for challenge 20 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_21.md b/content/writeups/adventofctf/2020/challenge_21.md
index d15580f..1237ce7 100644
--- a/content/writeups/adventofctf/2020/challenge_21.md
+++ b/content/writeups/adventofctf/2020/challenge_21.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 21"
+title = "Obscure Sessions"
 subtitle = "Challenge 21 - AdventOfCTF"
 date = 2021-02-26T11:45:53+01:00
 description = "A writeup for challenge 21 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_22.md b/content/writeups/adventofctf/2020/challenge_22.md
index 0a6115a..0c80ef7 100644
--- a/content/writeups/adventofctf/2020/challenge_22.md
+++ b/content/writeups/adventofctf/2020/challenge_22.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 22"
+title = "Dubstep"
 subtitle = "Challenge 22 - AdventOfCTF"
 date = 2021-03-04T01:24:34+01:00
 description = "A writeup for challenge 22 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_23.md b/content/writeups/adventofctf/2020/challenge_23.md
index c3b2e23..6ace3c0 100644
--- a/content/writeups/adventofctf/2020/challenge_23.md
+++ b/content/writeups/adventofctf/2020/challenge_23.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 23"
+title = "IRC"
 subtitle = "Challenge 23 - AdventOfCTF"
 date = 2021-03-16T20:52:38+01:00
 description = "A writeup for challenge 23 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_24.md b/content/writeups/adventofctf/2020/challenge_24.md
index 5bf91c9..cc52f4b 100644
--- a/content/writeups/adventofctf/2020/challenge_24.md
+++ b/content/writeups/adventofctf/2020/challenge_24.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 24"
+title = "Final Battle"
 subtitle = "Challenge 24 - AdventOfCTF"
 date = 2021-09-22T12:12:12+01:00
 description = "A writeup for challenge 24 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_3.md b/content/writeups/adventofctf/2020/challenge_3.md
index 81d64c3..ff7350d 100644
--- a/content/writeups/adventofctf/2020/challenge_3.md
+++ b/content/writeups/adventofctf/2020/challenge_3.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 3"
+title = "Javascript"
 subtitle = "Challenge 3 - AdventOfCTF"
 date = 2020-12-03T09:29:12+01:00
 description = "A writeup for challenge 3 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_4.md b/content/writeups/adventofctf/2020/challenge_4.md
index 5271905..256e357 100644
--- a/content/writeups/adventofctf/2020/challenge_4.md
+++ b/content/writeups/adventofctf/2020/challenge_4.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 4"
+title = "Obfuscation"
 subtitle = "Challenge 4 - AdventOfCTF"
 date = 2020-12-04T09:58:46+01:00
 description = "A writeup for challenge 4 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_5.md b/content/writeups/adventofctf/2020/challenge_5.md
index 91d21c1..178d05b 100644
--- a/content/writeups/adventofctf/2020/challenge_5.md
+++ b/content/writeups/adventofctf/2020/challenge_5.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 5"
+title = "Classic"
 subtitle = "Challenge 5 - AdventOfCTF"
 date = 2020-12-05T08:57:31+01:00
 description = "A writeup for challenge 5 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_6.md b/content/writeups/adventofctf/2020/challenge_6.md
index bda6203..8b521c5 100644
--- a/content/writeups/adventofctf/2020/challenge_6.md
+++ b/content/writeups/adventofctf/2020/challenge_6.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 6"
+title = "Union"
 subtitle = "Challenge 6 - AdventOfCTF"
 date = 2020-12-06T15:24:45+01:00
 description = "A writeup for challenge 6 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_7.md b/content/writeups/adventofctf/2020/challenge_7.md
index 2575626..3f9c974 100644
--- a/content/writeups/adventofctf/2020/challenge_7.md
+++ b/content/writeups/adventofctf/2020/challenge_7.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 7"
+title = "Blind"
 subtitle = "Challenge 7 - AdventOfCTF"
 date = 2020-12-07T16:43:23+01:00
 description = "A writeup for challenge 7 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_8.md b/content/writeups/adventofctf/2020/challenge_8.md
index 5511ae3..d6ba6e3 100644
--- a/content/writeups/adventofctf/2020/challenge_8.md
+++ b/content/writeups/adventofctf/2020/challenge_8.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 8"
+title = "Robot"
 subtitle = "Challenge 8 - AdventOfCTF"
 date = 2020-12-08T09:34:24+01:00
 description = "A writeup for challenge 8 of AdventOfCTF."
diff --git a/content/writeups/adventofctf/2020/challenge_9.md b/content/writeups/adventofctf/2020/challenge_9.md
index 477c53f..2d751e3 100644
--- a/content/writeups/adventofctf/2020/challenge_9.md
+++ b/content/writeups/adventofctf/2020/challenge_9.md
@@ -1,6 +1,6 @@
 +++
 author = "Maik de Kruif"
-title = "Challenge 9"
+title = "JWT"
 subtitle = "Challenge 9 - AdventOfCTF"
 date = 2020-12-11T21:24:52+01:00
 description = "A writeup for challenge 9 of AdventOfCTF."