fix(default-config): make the default config far less paranoid (#1179)

* test: add httpdebug tool

Signed-off-by: Xe Iaso <me@xeiaso.net>

* fix(data/clients/git): more strictly match the git client

Signed-off-by: Xe Iaso <me@xeiaso.net>

* fix(default-config): make the default config far less paranoid

This uses a variety of heuristics to make sure that clients that claim
to be browsers are more likely to behave like browsers. Most of these
are based on the results of a lot of reverse engineering and data
collection from honeypot servers.

Signed-off-by: Xe Iaso <me@xeiaso.net>

* docs: update CHANGELOG

Signed-off-by: Xe Iaso <me@xeiaso.net>

---------

Signed-off-by: Xe Iaso <me@xeiaso.net>
Signed-off-by: Xe Iaso <xe.iaso@techaro.lol>

data/botPolicies.yaml

@@ -93,6 +93,44 @@ bots:
   #   weight:
   #     adjust: -10
 
+  # Assert behaviour that only genuine browsers display. This ensures that Chrome
+  # or Firefox versions
+  - name: realistic-browser-catchall
+    expression:
+      all:
+        - '"User-Agent" in headers'
+        - '( userAgent.contains("Firefox") ) || ( userAgent.contains("Chrome") ) || ( userAgent.contains("Safari") )'
+        - '"Accept" in headers'
+        - '"Sec-Fetch-Dest" in headers'
+        - '"Sec-Fetch-Mode" in headers'
+        - '"Sec-Fetch-Site" in headers'
+        - '"Upgrade-Insecure-Requests" in headers'
+        - '"Accept-Encoding" in headers'
+        - '( headers["Accept-Encoding"].contains("zstd") || headers["Accept-Encoding"].contains("br") )'
+        - '"Accept-Language" in headers'
+    action: WEIGH
+    weight:
+      adjust: -10
+
+  # Chrome should behave like Chrome
+  - name: chrome-is-proper
+    expression:
+      all:
+        - userAgent.contains("Chrome")
+        - '"Sec-Ch-Ua" in headers'
+        - 'headers["Sec-Ch-Ua"].contains("Chromium")'
+        - '"Sec-Ch-Ua-Mobile" in headers'
+        - '"Sec-Ch-Ua-Platform" in headers'
+    action: WEIGH
+    weight:
+      adjust: -5
+
+  - name: should-have-accept
+    expression: '!("Accept" in headers)'
+    action: WEIGH
+    weight:
+      adjust: 5
+
   # Generic catchall rule
   - name: generic-browser
     user_agent_regex: >-

data/clients/git.yaml

@@ -2,13 +2,19 @@
   action: ALLOW
   expression:
     all:
-    - >
-      (  
-        userAgent.startsWith("git/") ||
-        userAgent.contains("libgit") ||
-        userAgent.startsWith("go-git") ||
-        userAgent.startsWith("JGit/") ||
-        userAgent.startsWith("JGit-")
-      )
-    - '"Git-Protocol" in headers'
-    - headers["Git-Protocol"] == "version=2"
+      - >
+        (  
+          userAgent.startsWith("git/") ||
+          userAgent.contains("libgit") ||
+          userAgent.startsWith("go-git") ||
+          userAgent.startsWith("JGit/") ||
+          userAgent.startsWith("JGit-")
+        )
+      - '"Accept" in headers'
+      - headers["Accept"] == "*/*"
+      - '"Cache-Control" in headers'
+      - headers["Cache-Control"] == "no-cache"
+      - '"Pragma" in headers'
+      - headers["Pragma"] == "no-cache"
+      - '"Accept-Encoding" in headers'
+      - headers["Accept-Encoding"].contains("gzip")

docs/docs/CHANGELOG.md

@@ -29,6 +29,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fixes concurrency problems with very old browsers ([#1082](https://github.com/TecharoHQ/anubis/issues/1082)).
 - Randomly use the Refresh header instead of the meta refresh tag in the metarefresh challenge.
 - Update OpenRC service to truncate the runtime directory before starting Anubis.
+- Make the git client profile more strictly match how the git client behaves.
+- Make the default configuration reward users using normal browsers.
 - Allow multiple consecutive slashes in a row in application paths ([#754](https://github.com/TecharoHQ/anubis/issues/754)).
 - Add option to set `targetSNI` to special keyword 'auto' to indicate that it should be automatically set to the request Host name ([424](https://github.com/TecharoHQ/anubis/issues/424)).