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标题: RMVA修复$stdin.gets [打印本页]

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作者: fux2    时间: 2017-5-10 21:33
标题: RMVA修复$stdin.gets
理论上VA任何版本通用，可以自行魔改到STDIN.gets上，修改最下面一段就可以

RUBY 代码复制

#by Fux2 20170510 21:47:15
#转载请说明出处
class String
 
  def byte_length
    ret = 0
    self.each_byte{ret+=1}
    ret
  end
 
  def address
    [self].pack("p").unpack("L")[0]
  end
 
end
 
module Fux2
  module Win32Tools
 
    ReadProcessMemory = Win32API.new('kernel32','ReadProcessMemory','llpll','l')
    WriteProcessMemory = Win32API.new('kernel32','WriteProcessMemory','llpll','l')
    VirtualProtect = Win32API.new('kernel32','VirtualProtect','lllp','l')
    GetModuleHandle = Win32API.new('kernel32','GetModuleHandle','p','l')
    GetProcAddress = Win32API.new('kernel32','GetProcAddress','lp','l')
    GetCurrentProcess = Win32API.new('kernel32','GetCurrentProcess','v','l')
 
    module_function
    def readmem(addr,buf,len)
      ReadProcessMemory.call(@@hProc,addr,buf,len,0)
    end
 
    def writemem(addr,buf,len)
      WriteProcessMemory.call(@@hProc,addr,buf,len,0)
    end
 
    def unprotect(addr,len)
      VirtualProtect.call(addr,len,0x40,"\0"*4)
    end
 
    def getmodule(name)
      GetModuleHandle.call(name)
    end
 
    def getaddr(dll,name)
      GetProcAddress.call(dll,name)
    end
 
    def init
      @@hProc = GetCurrentProcess.call
      raise "cannot open process" if @@hProc==0
    end
    init
 
  end
  class ReadFileHooker
 
    include Win32Tools
 
    HookCode = ([0xC7,0x44,0x24,0x0C,0x12,0x05,0x00,0x00]+[0]*6).pack("C*")
 
    def SetHookOn
      cad = @code_address
      cal = @code_length
 
      hook_addr = cad-@proc-5
      Win32Tools.writemem(cad+cal-6,@origin_code_readfile,6)
      Win32Tools.writemem(@proc,[0xE9,hook_addr,0x90].pack("ClC"),6)
    end
 
    def SetHookOff
      return unless @origin_code_readfile
      Win32Tools.writemem(@proc,@origin_code_readfile,6)
    end
 
    def initialize
      dll = Win32Tools.getmodule("kernel32")
      @proc = Win32Tools.getaddr(dll,"ReadFile")
      @code_address = HookCode.address
      @code_length = HookCode.byte_length
      @origin_code_readfile = "\0"*6
      Win32Tools.readmem(@proc,@origin_code_readfile,6)
      unprotect(@code_address,@code_length)
    end
 
  end
end
 
class << $stdin
  def hack
    @tool = Fux2::ReadFileHooker.new
    alias _gets gets
    def gets
      @tool.SetHookOn
      ret = _gets
      @tool.SetHookOff
      return ret
    end
  end
end
 
$stdin.hack

#by Fux2 20170510 21:47:15


#转载请说明出处


class String


 


  def byte_length


    ret = 0


    self.each_byte{ret+=1}


    ret


  end


 


  def address


    [self].pack("p").unpack("L")[0]


  end


 


end


 


module Fux2


  module Win32Tools


 


    ReadProcessMemory = Win32API.new('kernel32','ReadProcessMemory','llpll','l')


    WriteProcessMemory = Win32API.new('kernel32','WriteProcessMemory','llpll','l')


    VirtualProtect = Win32API.new('kernel32','VirtualProtect','lllp','l')


    GetModuleHandle = Win32API.new('kernel32','GetModuleHandle','p','l')


    GetProcAddress = Win32API.new('kernel32','GetProcAddress','lp','l')


    GetCurrentProcess = Win32API.new('kernel32','GetCurrentProcess','v','l')


 


    module_function


    def readmem(addr,buf,len)


      ReadProcessMemory.call(@@hProc,addr,buf,len,0)


    end


 


    def writemem(addr,buf,len)


      WriteProcessMemory.call(@@hProc,addr,buf,len,0)


    end


 


    def unprotect(addr,len)


      VirtualProtect.call(addr,len,0x40,"\0"*4)


    end


 


    def getmodule(name)


      GetModuleHandle.call(name)


    end


 


    def getaddr(dll,name)


      GetProcAddress.call(dll,name)


    end


 


    def init


      @@hProc = GetCurrentProcess.call


      raise "cannot open process" if @@hProc==0


    end


    init


 


  end


  class ReadFileHooker


 


    include Win32Tools


 


    HookCode = ([0xC7,0x44,0x24,0x0C,0x12,0x05,0x00,0x00]+[0]*6).pack("C*")


 


    def SetHookOn


      cad = @code_address


      cal = @code_length


 


      hook_addr = cad-@proc-5


      Win32Tools.writemem(cad+cal-6,@origin_code_readfile,6)


      Win32Tools.writemem(@proc,[0xE9,hook_addr,0x90].pack("ClC"),6)


    end


 


    def SetHookOff


      return unless @origin_code_readfile


      Win32Tools.writemem(@proc,@origin_code_readfile,6)


    end


 


    def initialize


      dll = Win32Tools.getmodule("kernel32")


      @proc = Win32Tools.getaddr(dll,"ReadFile")


      @code_address = HookCode.address


      @code_length = HookCode.byte_length


      @origin_code_readfile = "\0"*6


      Win32Tools.readmem(@proc,@origin_code_readfile,6)


      unprotect(@code_address,@code_length)


    end


 


  end


end


 


class << $stdin


  def hack


    @tool = Fux2::ReadFileHooker.new


    alias _gets gets


    def gets


      @tool.SetHookOn


      ret = _gets


      @tool.SetHookOff


      return ret


    end


  end


end


 


$stdin.hack

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作者: DeathKing    时间: 2017-6-8 11:39
好久没上6R了，不知道RM系列现在是个啥情况。我都怀疑VA是否有调用$stdin.gets的需要，我记得各种输入都是RGSS自己魔改的吧？

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作者: fux2    时间: 2017-6-8 11:51

DeathKing 发表于 2017-6-8 11:39
好久没上6R了，不知道RM系列现在是个啥情况。我都怀疑VA是否有调用$stdin.gets的需要，我记得各种输入都是R ...

有gets这么方便的函数，干啥要自己去造轮子

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作者: fgh445566191    时间: 2017-7-30 20:41
表示无法运行出错

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作者: 陈大帅帅帅哥    时间: 2017-7-30 22:42
这个脚本怎么用的啊

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作者: fux2    时间: 2017-7-30 23:02

陈大帅帅帅哥 发表于 2017-7-30 22:42
这个脚本怎么用的啊

插入后生效，$stdin.gets修复，标题写的很明确了呀。

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