Adds test about bidirectional rules

Ticket: 5665

Both positive and negative tests (impossible to load rules)
Matching and not matching tests

tests/detect-bidir-flowbits/README.md

@@ -0,0 +1,11 @@
+# Description
+
+Test bidirection matching with a real life example
+https://redmine.openinfosecfoundation.org/issues/5665
+
+# PCAP
+
+Crafted from the rules
+Client is
+`curl -d '"goog:chromeOptions";"binary";"args":["' -X POST 127.0.0.1:8080/wd/hub/session`
+Server is server.go

tests/detect-bidir-flowbits/server.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"fmt"
+	"net/http"
+)
+
+func main() {
+	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Server", "Jetty")
+		w.WriteHeader(http.StatusInternalServerError)
+		content := "org.openqa.selenium.WebDriverException: unknown error: Chrome failed to start: exited normally."
+		content = content + `unknown error: DevToolsActivePort file doesn't exist)\n  (The process started from chrome location`
+		n, err := w.Write([]byte(content))
+		fmt.Printf("lola %v %v\n", n, err)
+	})
+
+	server := &http.Server{
+		Addr:    "0.0.0.0:8080",
+		Handler: handler,
+	}
+
+	fmt.Printf("Listening [0.0.0.0:8080]...\n")
+	err := server.ListenAndServe()
+	fmt.Printf("lol %s", err)
+}

tests/detect-bidir-flowbits/test.rules

@@ -0,0 +1,6 @@
+#flowbits version
+alert http any any -> any any (msg:"ET EXPLOIT Selenium Server Chrome 3.141.59 Remote Code Execution"; flow:established,to_server; flowbits:set,ET.Selenium314159.RCE; urilen:15; http.method; content:"POST"; http.uri; content:"/wd/hub/session"; fast_pattern; http.request_body; content:"|22|goog|3a|chromeOptions|22|"; content:"|22|binary|22|"; content:"|22|args|22|"; content:"|5b 22|"; within:5; reference:url,github.com/BoredHackerBlog/selenium_code_exec_notes; classtype:attempted-admin; sid:2052319; rev:2; metadata:attack_target Web_Server, tls_state TLSDecrypt, created_at 2024_05_01, deployment Perimeter, deployment Internal, deployment SSLDecrypt, former_category EXPLOIT, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_05_02; target:dest_ip;)
+alert http any any -> any any (msg:"ET EXPLOIT Selenium Server Grid Chrome 3.141.59 Remote Code Execution - Successful"; flow:established,to_client; flowbits:isset,ET.Selenium314159.RCE; http.stat_code; content:"500"; http.server; content:"Jetty"; startswith; file.data; content:"org|2e|openqa|2e|selenium|2e|WebDriverException|3a 20|unknown|20|error|3a 20|Chrome|20|failed|20|to|20|start|3a 20|exited|20|normally|2e|"; content:"unknown|20|error|3a 20|DevToolsActivePort|20|file|20|doesn|27|t|20|exist|29 5c|n|20 20 28|The|20|process|20|started|20|from|20|chrome|20|location"; fast_pattern; reference:url,github.com/BoredHackerBlog/selenium_code_exec_notes; classtype:successful-admin; sid:2052359; rev:1; metadata:attack_target Web_Server, tls_state TLSDecrypt, created_at 2024_05_02, deployment Perimeter, deployment Internal, former_category EXPLOIT, confidence High, signature_severity Critical, updated_at 2024_05_02; target:src_ip;)
+
+# and now the bidir version
+alert http any any => any any (msg:"ET EXPLOIT Selenium Server Chrome 3.141.59 Remote Code Execution"; urilen:15; http.method; content:"POST"; http.uri; content:"/wd/hub/session"; fast_pattern; http.request_body; content:"|22|goog|3a|chromeOptions|22|"; content:"|22|binary|22|"; content:"|22|args|22|"; content:"|5b 22|"; within:5; http.stat_code; content:"500"; http.server; content:"Jetty"; startswith; bidir.toclient; file.data; content:"org|2e|openqa|2e|selenium|2e|WebDriverException|3a 20|unknown|20|error|3a 20|Chrome|20|failed|20|to|20|start|3a 20|exited|20|normally|2e|"; content:"unknown|20|error|3a 20|DevToolsActivePort|20|file|20|doesn|27|t|20|exist|29 5c|n|20 20 28|The|20|process|20|started|20|from|20|chrome|20|location"; reference:url,github.com/BoredHackerBlog/selenium_code_exec_notes; classtype:attempted-admin; sid:1; metadata:attack_target Web_Server, tls_state TLSDecrypt, created_at 2024_05_01, deployment Perimeter, deployment Internal, deployment SSLDecrypt, former_category EXPLOIT, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_05_02; target:dest_ip;)

tests/detect-bidir-flowbits/test.yaml

@@ -0,0 +1,17 @@
+requires:
+  min-version: 8
+
+args:
+ - -k none
+
+checks:
+  - filter:
+      count: 1
+      match:
+        event_type: alert
+        alert.signature_id: 1
+  - filter:
+      count: 1
+      match:
+        event_type: alert
+        alert.signature_id: 2052359

tests/detect-bidir-impossible/README.md

@@ -0,0 +1,8 @@
+# Description
+
+Test invalid rules for bidirection matching
+https://redmine.openinfosecfoundation.org/issues/5665
+
+# PCAP
+
+Reusing a pcap, but does not matter

tests/detect-bidir-impossible/test.rules

@@ -0,0 +1,6 @@
+alert http any any => any any (msg:"matching both uri and status"; sid: 11; http.uri; content: "/download"; http.stat_code; content: "200"; flow: to_server;)
+alert http any any => any any (msg:"matching only uri"; sid: 2; http.uri; content: "/download"; )
+alert http any any => any any (msg:"matching only status"; sid: 3; http.stat_code; content: "200";)
+alert http any any => any any (msg:"matching connection, but from ambiguous direction"; sid: 4; http.uri; content: "/download"; http.stat_code; content: "200"; http.connection; content: "eep";)
+alert http any any => any any (msg:"stream rule"; sid: 5; content: "/download"; content: "200";)
+alert http any any => any any (msg:"stream rule"; sid: 6; bidir.toserver; content: "/download"; bidir.toclient; content: "200";)

tests/detect-bidir-impossible/test.yaml

@@ -0,0 +1,29 @@
+requires:
+  min-version: 8
+
+pcap: ../http-all-headers/input.pcap
+
+exit-code: 1
+
+checks:
+  - shell:
+      args: grep -c 'error parsing signature' suricata.log
+      expect: 6
+  - shell:
+      args: grep -c 'rule 2 should use both directions, but does not' suricata.log
+      expect: 1
+  - shell:
+      args: grep -c 'rule 3 should use both directions, but does not' suricata.log
+      expect: 1
+  - shell:
+      args: grep -c 'rule 4 means to use both directions, cannot have keywords ambiguous about directions' suricata.log
+      expect: 1
+  - shell:
+      args: grep -c 'rule 5 should use both directions, but does not' suricata.log
+      expect: 1
+  - shell:
+      args: grep -c 'rule 6 should use both directions, but does not' suricata.log
+      expect: 1
+  - shell:
+      args: grep -c 'rule 11 means to use both directions, cannot specify a flow direction' suricata.log
+      expect: 1

tests/detect-bidir/README.md

@@ -0,0 +1,8 @@
+# Description
+
+Test bidirection matching
+https://redmine.openinfosecfoundation.org/issues/5665
+
+# PCAP
+
+Reusing pcap from http-all-headers

tests/detect-bidir/test.rules

@@ -0,0 +1,10 @@
+alert http any any => any any (msg:"matching both uri and status"; sid: 1; http.uri; content: "/download"; http.stat_code; content: "200";)
+alert http any any => any any (msg:"not matching both uri and status"; sid: 2; http.uri; content: "/download"; http.stat_code; content: "404";)
+alert http any any => any any (msg:"not matching both uri and status"; sid: 3; http.uri; content: "/upload"; http.stat_code; content: "200";)
+alert http any any => any any (msg:"fast_pattern on to_client side"; sid: 7; http.uri; content: "down"; http.server; content: "Apache"; fast_pattern;)
+alert http any any => any any (msg:"fast_pattern on to_client side but not matching"; sid: 8; http.uri; content: "upload"; http.server; content: "Apache"; fast_pattern;)
+alert http any any => any any (msg:"disambiguated toclient"; sid: 11; http.uri; content: "/download"; http.stat_code; content: "200"; bidir.toclient; http.connection; content: "eep";)
+alert http any any => any any (msg:"disambiguated toserver"; sid: 12; http.uri; content: "/download"; bidir.toserver; http.connection; content: "eep"; bidir.toclient; http.stat_code; content: "200";)
+alert http any any => any any (msg:"disambiguated toclient, without other toclient"; sid: 13; http.uri; content: "/download";  bidir.toclient; http.connection; content: "eep";)
+alert http any any => any any (msg:"disambiguated both sides"; sid: 14; bidir.toclient; http.connection; content: "eep"; bidir.toserver; http.connection; content: "eep";)
+alert http any any => any any (msg:"toclient, followed by http.uri implicitly toserver"; sid: 15; bidir.toclient; http.connection; content: "eep"; http.uri; content: "/download"; )

tests/detect-bidir/test.yaml

@@ -0,0 +1,56 @@
+requires:
+  min-version: 8
+
+pcap: ../http-all-headers/input.pcap
+
+checks:
+  - filter:
+      count: 1
+      match:
+        event_type: alert
+        alert.signature_id: 1
+  - filter:
+      count: 0
+      match:
+        event_type: alert
+        alert.signature_id: 2
+  - filter:
+      count: 0
+      match:
+        event_type: alert
+        alert.signature_id: 3
+  - filter:
+      count: 1
+      match:
+        event_type: alert
+        alert.signature_id: 7
+  - filter:
+      count: 0
+      match:
+        event_type: alert
+        alert.signature_id: 8
+  - filter:
+      count: 1
+      match:
+        event_type: alert
+        alert.signature_id: 11
+  - filter:
+      count: 1
+      match:
+        event_type: alert
+        alert.signature_id: 12
+  - filter:
+      count: 1
+      match:
+        event_type: alert
+        alert.signature_id: 13
+  - filter:
+      count: 1
+      match:
+        event_type: alert
+        alert.signature_id: 14
+  - filter:
+      count: 1
+      match:
+        event_type: alert
+        alert.signature_id: 15