有时候写程序,调试程序真是一件非常有趣的事,就比如这次,蹦蹦跳跳,笑嘻嘻,意犹未尽的就把这个程序搞好了。
netstat 或者其他各种列举端口的工具,比如fport,或者 sysinternals 的 Tcpview,都是调用 Iphlpapi.dll 中的 API 来完成端口的列举。而 Iphlpapi.dll 中的 API 最终是使用 ZwDeviceIoControlFile ,向设备对象 Device\Tcp 发 IOCTL_TCP_QUERY_INFORMATION_EX 来得到各种信息的。于是我们只要Hook相应的System Service ,然后对得到的结果做一些处理,弄掉不希望出现的端口信息就可以了。不过真正的问题在于,IOCTL_TCP_QUERY_INFORMATION_EX 和端口相关的各种结构定义,参数含义目前都(大部分)是未公开,没人知道的,也就是Undocumented的。Undocumented?? ring3调试,我熟啊。ring0调试,我熟啊。Windows驱动,我熟啊。Windows系统,我熟啊。我怕谁啊我。Undocumented??爽,要的就是Undocumented。
通过ring3调试,分析Iphlpapi.dll是如何使用 IOCTL_TCP_QUERY_INFORMATION_EX 相关的各种参数,结合msdn中的一些信息,于是很轻松的搞清了需要了解的结构。用我自己写的awx建一个VC的驱动项目,写好了Hook部分。
关于本例中使用的解决Hook在各种Windows版本下运行的方法,在很多地方很多地方都出现了,我不清楚最早是谁想出来的,我是在《Undocumented Windows NT》一书的源码中第一次看到这种方法的。
下面是实现源码,很简单,我就不多说什么了。
#if 0 //================================================================
Copyright (c) JIURL, All Rights Reserved
========================================================================
/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/
Module Name:
Jiurl_tcpioctl.h
About:
- 这个驱动项目由一个我写的 AppWizard 创建。
[ HomePage ] http://jiurl.yeah.net
~~~~~~~~~~~~~~~~~~~~~
[ Email ] jiurl@mail.china.com
~~~~~~~~~~~~~~~~~~~~
[ Forum ] http://jiurl.cosoft.org.cn/forum/index.php
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- 有偿定制 AppWizard ,请发邮件联系 。
Comments:
本文件中的所有内容目前都是未公开的,由我分析得出,是隐藏端口的关键内容。
Undocumented?? 爽!要的就是 Undocumented 。
/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/
#endif
// jiurl // IPSNMPInfo 结构的定义是根据 RFC 2011
// jiurl // 所以我根据 RFC 2022 ,仿 IPSNMPInfo, 定义结构 TCPSNMPInfo
// jiurl // 再通过一些分析得到一些扩展部分的定义
typedef struct TCPSNMPInfo {
ULONG tcpsi_RtoAlgorithm;
ULONG tcpsi_RtoMin;
ULONG tcpsi_RtoMax;
ULONG tcpsi_MaxConn;
ULONG tcpsi_ActiveOpens;
ULONG tcpsi_PassiveOpens;
ULONG tcpsi_AttemptFails;
ULONG tcpsi_EstabResets;
ULONG tcpsi_CurrEstab;
ULONG tcpsi_InSegs;
ULONG tcpsi_OutSegs;
ULONG tcpsi_RetransSegs;
ULONG tcpsi_unknown1;
ULONG tcpsi_unknown2;
ULONG tcpsi_numconn;
} TCPSNMPInfo;
#define tcpRtoAlgorithm_other 1 // none of the following
#define tcpRtoAlgorithm_constant 2 // a constant rto
#define tcpRtoAlgorithm_rsre 3 // MIL-STD-1778, Appendix B
#define tcpRtoAlgorithm_vanj 4 // Van Jacobson's algorithm
#define TCP_MIB_STATS_ID 1
#define TCP_MIB_ADDRTABLE_ENTRY_ID 0x101
#define TCP_MIB_ADDRTABLE_ENTRY_EX_ID 0x102
typedef struct TCPAddrEntry {
ULONG tae_ConnState;
ULONG tae_ConnLocalAddress;
ULONG tae_ConnLocalPort;
ULONG tae_ConnRemAddress;
ULONG tae_ConnRemPort;
} TCPAddrEntry;
#define tcpConnState_closed 1
#define tcpConnState_listen 2
#define tcpConnState_synSent 3
#define tcpConnState_synReceived 4
#define tcpConnState_established 5
#define tcpConnState_finWait1 6
#define tcpConnState_finWait2 7
#define tcpConnState_closeWait 8
#define tcpConnState_lastAck 9
#define tcpConnState_closing 10
#define tcpConnState_timeWait 11
#define tcpConnState_deleteTCB 12
typedef struct TCPAddrExEntry {
ULONG tae_ConnState;
ULONG tae_ConnLocalAddress;
ULONG tae_ConnLocalPort;
ULONG tae_ConnRemAddress;
ULONG tae_ConnRemPort;
ULONG pid;
} TCPAddrExEntry;
#if 0 //================================================================
Copyright (c) JIURL, All Rights Reserved
========================================================================
/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/
Module Name:
JiurlPortHide.h
About:
- 这个驱动项目由一个我写的 AppWizard 创建。
[ HomePage ] http://jiurl.yeah.net
~~~~~~~~~~~~~~~~~~~~~
[ Email ] jiurl@mail.china.com
~~~~~~~~~~~~~~~~~~~~
[ Forum ] http://jiurl.cosoft.org.cn/forum/index.php
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- 有偿定制 AppWizard ,请发邮件联系 。
/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/*/
#endif
#define PORTHIDE 139
#pragma pack(1)
typedef struct ServiceDescriptorEntry {
unsigned int *ServiceTableBase;
unsigned int *ServiceCounterTableBase; //Used only in checked build
unsigned int NumberOfServices;
unsigned char *ParamTableBase;
} ServiceDescriptorTableEntry_t, *PServiceDescriptorTableEntry_t;
#pragma pack()
__declspec(dllimport) ServiceDescriptorTableEntry_t KeServiceDescriptorTable;
NTSYSAPI
NTSTATUS
NTAPI
ZwDeviceIoControlFile(
IN HANDLE FileHandle,
IN HANDLE Event OPTIONAL,
IN PIO_APC_ROUTINE ApcRoutine OPTIONAL,
IN PVOID ApcContext OPTIONAL,
OUT PIO_STATUS_BLOCK IoStatusBlock,
IN ULONG IoControlCode,
IN PVOID InputBuffer OPTIONAL,
IN ULONG InputBufferLength,
OUT PVOID OutputBuffer OPTIONAL,
IN ULONG OutputBufferLength
);
typedef NTSTATUS (*ZWDEVICEIOCONTROLFILE)(
IN HANDLE FileHandle,
IN HANDLE Event OPTIONAL,
IN PIO_APC_ROUTINE ApcRoutine OPTIONAL,
IN PVOID ApcContext OPTIONAL,
OUT PIO_STATUS_BLOCK IoStatusBlock,
IN ULONG IoControlCode,
IN PVOID InputBuffer OPTIONAL,
IN ULONG InputBufferLength,
OUT PVOID OutputBuffer OPTIONAL,
IN ULONG OutputBufferLength
);
ZWDEVICEIOCONTROLFILE OldZwDeviceIoControlFile;
void DriverUnload(IN PDRIVER_OBJECT DriverObject);
NTSTATUS
DriverDispatch(IN PDEVICE_OBJECT DeviceObject,IN PIRP Irp);
NTSTATUS NewZwDeviceIoControlFile(
IN HANDLE FileHandle,
IN HANDLE Event OPTIONAL,
IN PIO_APC_ROUTINE ApcRoutine OPTIONAL,
IN PVOID ApcContext OPTIONAL,
OUT PIO_STATUS_BLOCK IoStatusBlock,
IN ULONG IoControlCode,
IN PVOID InputBuffer OPTIONAL,
IN ULONG InputBufferLength,
OUT PVOID OutputBuffer OPTIONAL,
IN ULONG OutputBufferLength
);
// jiurl // from addrconv.cpp
#define ntohs(s) ( ( ((s) 8) & 0x00FF ) | ( ((s) << 8) & 0xFF00 ) )
// jiurl // from tcpioctl.h tdiinfo.h tdistat.h
#define IOCTL_TCP_QUERY_INFORMATION_EX 0x00120003
//* Structure of an entity ID.
typedef struct TDIEntityID {
ULONG tei_entity;
ULONG tei_instance;
} TDIEntityID;
//* Structure of an object ID.
typedef struct TDIObjectID {
TDIEntityID toi_entity;
ULONG toi_class;
ULONG toi_type;
ULONG toi_id;
}