Hooking server input

import binutils

from binutils import Convention


engine = binutils.find_binary('bin/engine')
Cmd_ExecuteCommand = engine.find_signature('\x55\x8B\xEC\x53\x8B\x5D\x08\x56\x8B\x33').make_function(Convention.CDECL, 'pii)v')

def hook(args):
    print
    print 'm_nArgc', args[0].get_int()

    argvsize = args[0].get_int(4)
    print 'm_nArgv0Size', argvsize
    print 'm_pArgSBuffer:', args[0].get_string(8, False)
    print 'm_pArgSBuffer:', args[0].get_string(520, False)
    for x in xrange(argvsize):
        print x, 'm_ppArgv', getArg(args[0].get_ptr(1032), x)
    print

def getArg(ptr, index):
    return ptr.get_string(index*4, False)

Cmd_ExecuteCommand.add_pre_hook(hook)

def unload():
    Cmd_ExecuteCommand.remove_pre_hook(hook)