54 lines
1.7 KiB
Bash
54 lines
1.7 KiB
Bash
# Title: LinPeasBase - execBin
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# ID: execBin
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# Author: Carlos Polop
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# Last Update: 22-08-2023
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# Description: Write and execute an embedded binary
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# License: GNU GPL
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# Version: 1.0
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# Functions Used: print_3title, print_info
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# Global Variables: $Wfolder
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# Initial Functions:
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# Generated Global Variables: $TOOL_NAME, $TOOL_LINK, $B64_BIN, $PARAMS, $TMP_BIN, $cmdpid, $watcher, $rc
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# Fat linpeas: 0
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# Small linpeas: 1
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execBin() {
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TOOL_NAME=$1 # Display name
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TOOL_LINK=$2 # Reference URL
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B64_BIN=$3 # base64‑encoded executable
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PARAMS=$4 # Arguments to the tool
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[ -z "$B64_BIN" ] && return 0 # nothing to do
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echo
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print_3title "Running $TOOL_NAME"
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print_info "$TOOL_LINK"
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TMP_BIN=$(mktemp "${Wfolder:-/tmp}/bin.XXXXXX") || { echo "mktemp failed"; return 1; }
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printf '%s' "$B64_BIN" | base64 -d > "$TMP_BIN" || { echo "decode failed"; rm -f "$TMP_BIN"; return 1; }
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chmod +x "$TMP_BIN"
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# ---------------- 120‑second wall‑clock timeout ----------------
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if command -v timeout >/dev/null 2>&1; then # GNU/BSD timeout
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timeout --preserve-status 120 "$TMP_BIN" $PARAMS
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elif command -v gtimeout >/dev/null 2>&1; then # Homebrew coreutils (macOS)
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gtimeout --preserve-status 120 "$TMP_BIN" $PARAMS
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else # POSIX fall‑back
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(
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"$TMP_BIN" $PARAMS & # run in background
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cmdpid=$!
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( sleep 120 && kill -0 "$cmdpid" 2>/dev/null && kill -TERM "$cmdpid" ) &
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watcher=$!
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wait "$cmdpid"
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rc=$?
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kill -9 "$watcher" 2>/dev/null
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exit $rc
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)
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fi
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rc=$?
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rm -f "$TMP_BIN"
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echo
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return $rc
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} |