Update remove_upx_info.sh

Author: Azathothas

Misc/remove_upx_info.sh

@@ -1 +1,99 @@
 #!/usr/bin/env bash
+#
+# REQUIRES: coreutils + perl
+# OUTPUT: ${input}.st
+# source <(curl -qfsSL "https://raw.githubusercontent.com/pkgforge/devscripts/refs/heads/main/Misc/remove_upx_info.sh")
+#set -x
+#-------------------------------------------------------#
+
+#-------------------------------------------------------#
+##Main
+purge_upxh()
+{
+  ##Enable Debug 
+   if [ "${DEBUG}" = "1" ] || [ "${DEBUG}" = "ON" ]; then
+      set -x
+   fi
+  #ENV
+   if [[ -z "${SYSTMP+x}" ]] || [[ -z "${SYSTMP##*[[:space:]]}" ]]; then
+     SYSTMP="$(dirname "$(mktemp -u)" | tr -d '[:space:]')"
+     local SYSTMP="${SYSTMP}"
+   fi
+   input="$(realpath $1 | tr -d '[:space:]')" ; local input="${input}"
+   p_name="$(basename ${input})" ; local p_name="${p_name}"
+   c_wd="$(realpath .)" ; local c_wd="${c_wd}"
+   input_tmp="${input}.upxtmp" ; local input_tmp="${input_tmp}"
+   BIN="${input_tmp}" ; local BIN="${BIN}"
+   output="${input}.st" ; local output="${output}"
+   rm -f "${BIN}.tmpupx" "${input}.st" "${input}.upxtmp" 2>/dev/null
+   cp -f "${input}" "${BIN}"
+  #Strip
+   if command -v perl &>/dev/null; then
+    if [[ -s "${BIN}" ]] && [[ $(stat -c%s "${BIN}") -gt 3 ]]; then
+     #Remove Headers: https://github.com/hackerschoice/thc-tips-tricks-hacks-cheat-sheet?tab=readme-ov-file
+      echo -e "\n[+] Removing UPX Headers (perl) ${input} <==> ${BIN}"
+      perl -i -0777 -pe 's/^(.{64})(.{0,256})UPX!.{4}/$1$2\0\0\0\0\0\0\0\0/s' "${BIN}"
+      perl -i -0777 -pe 's/^(.{64})(.{0,256})\x7fELF/$1$2\0\0\0\0/s' "${BIN}"
+      cat "${BIN}" \
+      | perl -e 'local($/);$_=<>;s/(.*)(\$Info:[^\0]*)(.*)/print "$1";print "\0"x length($2); print "$3"/es;' \
+      | perl -e 'local($/);$_=<>;s/(.*)(\$Id:[^\0]*)(.*)/print "$1";print "\0"x length($2); print "$3"/es;' >"${BIN}.tmpupx"
+      mv "${BIN}.tmpupx" "${BIN}"
+      grep -Eqm1 "PROT_EXEC\|PROT_WRITE" "${BIN}" \
+      && cat "${BIN}" | perl -e 'local($/);$_=<>;s/(.*)(PROT_EXEC\|PROT_WRI[^\0]*)(.*)/print "$1";print "\0"x length($2); print "$3"/es;' >"${BIN}.tmpupx" \
+      && mv "${BIN}.tmpupx" "${BIN}"
+      perl -i -0777 -pe 's/UPX!/\0\0\0\0/sg' "${BIN}"
+      #sstrip
+       if [[ "${NO_SSTRIP}" != "1" ]]; then
+         if ! command -v sstrip &>/dev/null && ! [[ -x "${SYSTMP}/.tmpbin/sstrip" ]]; then
+           mkdir -p "${SYSTMP}/.tmpbin"
+           curl -qfsSL "https://bin.pkgforge.dev/$(uname -m)-$(uname -s)/sstrip" -o "${SYSTMP}/.tmpbin/sstrip" &&\
+           chmod "a+x" "${SYSTMP}/.tmpbin/sstrip" &&\
+           local PATH="${SYSTMP}/.tmpbin:${PATH}"
+         fi
+         if command -v sstrip &>/dev/null; then
+           echo "[+] Stripping (sstripping) ==> ${BIN}"
+           sstrip --zeroes "${BIN}"
+         fi
+       fi
+      #add-sections
+       if [[ "${NO_ADD_SECTION}" != "1" ]]; then
+         if ! command -v add-section &>/dev/null && ! [[ -x "${SYSTMP}/.tmpbin/add-section" ]]; then
+           mkdir -p "${SYSTMP}/.tmpbin"
+           curl -qfsSL "https://bin.pkgforge.dev/$(uname -m)-$(uname -s)/add-section" -o "${SYSTMP}/.tmpbin/add-section" &&\
+           chmod "a+x" "${SYSTMP}/.tmpbin/add-section" &&\
+           local PATH="${SYSTMP}/.tmpbin:${PATH}"
+         fi
+         if command -v add-section &>/dev/null; then
+           echo "[+] Adding NULL Header (add-section) ==> ${BIN}"
+           mkdir -p "${SYSTMP}/.tmpbin"
+           cd "${SYSTMP}/.tmpbin" &&\
+           add-section --input "${BIN}" --output "${BIN}.tmp" &&\
+           mv -f "${BIN}.tmp" "${BIN}"
+           cd "${c_wd}"
+         fi
+       fi
+     #Move final executable 
+      mv -f "${BIN}" "${output}" && rm -f "${BIN}.tmpupx" "${input}.upxtmp" 2>/dev/null
+      if [[ ! -s "${output}" ]] || [[ $(stat -c%s "${output}") -lt 3 ]]; then
+        echo "[-] FATAL: Output file (${output}) is probably corrupted"
+      else
+        echo -e "[+] ${input} [$(stat -c'%s' ${input})] ==> ${output} [$(stat -c'%s' ${output})]\n"
+      fi
+    fi
+   else
+     echo "[-] FATAL: Requires perl"
+   fi
+  ##Cleanup 
+   [[ -d "${SYSTMP}/.tmpbin" ]] && rm -rf "${SYSTMP}/.tmpbin" 2>/dev/null
+   cd "${c_wd}"
+  ##Disable Debug 
+   if [ "${DEBUG}" = "1" ] || [ "${DEBUG}" = "ON" ]; then
+      set +x
+   fi
+  }
+export -f purge_upxh
+#Call func directly if not being sourced
+if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
+   purge_upxh "$@" <&0
+fi
+#-------------------------------------------------------#